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WO2017045096A1 - 解调上行信息的方法，装置及系统 - Google Patents

解调上行信息的方法，装置及系统 Download PDF

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Publication number
WO2017045096A1
WO2017045096A1 PCT/CN2015/089502 CN2015089502W WO2017045096A1 WO 2017045096 A1 WO2017045096 A1 WO 2017045096A1 CN 2015089502 W CN2015089502 W CN 2015089502W WO 2017045096 A1 WO2017045096 A1 WO 2017045096A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
pusch
uplink
frequency offset
offset value
Prior art date
Application number
PCT/CN2015/089502
Other languages
English (en)
French (fr)
Inventor
邵家枫
马莎
李超君
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP15903787.8A priority Critical patent/EP3340555B1/en
Priority to PCT/CN2015/089502 priority patent/WO2017045096A1/zh
Priority to CN201580067247.8A priority patent/CN107005512B/zh
Publication of WO2017045096A1 publication Critical patent/WO2017045096A1/zh
Priority to US15/919,687 priority patent/US10374770B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0039—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver other detection of signalling, e.g. detection of TFCI explicit signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/203—Details of error rate determination, e.g. BER, FER or WER
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, device and system for demodulating uplink information.
  • the orthogonality of the received signal depends on the transmitter and receiver operating at exactly the same frequency reference point. If not identical, the orthogonality of the subcarrier will be affected. Destruction causes subcarrier leakage. In order to avoid subcarrier leakage, the base station needs to perform frequency offset estimation on the terminal device and calibrate the terminal device using the estimated frequency offset value.
  • the TTI (Transmission Time Interval) of the current LTE system is 1 millisecond.
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • PUSCH Physical Uplink Shared Channel
  • the DM-RS (DeModulation RS) is used for the base station to measure the estimated uplink channel, and the base station performs frequency offset estimation and frequency calibration on the PUSCH sent by the terminal device according to the phase difference between the two DM-RS symbols.
  • the current LTE system evolution scheme has proposed a scenario in which the TTI length is set to 0.5 milliseconds or shorter.
  • the TTI length of the LTE system changes from 1 millisecond to 0.5 milliseconds, according to the signal structure in the prior art, the DM-RS for estimating the uplink frequency is transmitted on only one symbol, so that the base station cannot pass one symbol.
  • the upper DM-RS performs accurate uplink frequency offset estimation and calibration on the terminal device.
  • the most intuitive solution is to add another column of DM-RS symbols in the 0.5 millisecond TTI, and the base station can use the DM-RS on the two DM-RS symbols to perform accurate.
  • this additional reference signal overhead causes the capacity of the data to be transmitted to be smaller in the 0.5 millisecond TTI.
  • the efficiency of data transmission is reduced, and the system overhead of the reference signal is improved.
  • the embodiment of the present invention provides a method, device and system for demodulating uplink information.
  • the technical solution is as follows:
  • a method for demodulating uplink information includes:
  • the base station receives the target block error rate BLER according to the channel quality of the terminal device and/or the physical uplink shared channel PUSCH of the terminal device, and selects a first modulation and coding method MCS index for the terminal device;
  • the base station Determining, by the base station, the second MCS index according to the MCS index backoff value and the first MCS index, where the MCS index backoff value is used to perform a reduction process on the first MCS index to obtain the Two MCS indexes;
  • the base station performs frequency offset calibration on the frequency of the terminal device according to the historical frequency offset value of the terminal device, where the historical frequency offset value is a frequency offset of the terminal device stored by the base station value;
  • the base station receives uplink information sent by the terminal device according to the second MCS index, and demodulates the PUSCH according to the frequency after the frequency offset calibration.
  • the method further includes:
  • the base station After the terminal device performs uplink information transmission of 1 millisecond TTI, the base station determines a frequency offset value of the terminal device according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device;
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the method further includes:
  • the base station After the base station detects that the terminal device reaches the first evaluation threshold, sends, to the terminal device, at least one first resource indication information, where the first resource indication information is used to indicate two PUSCHs of 0.5 millisecond TTI.
  • An uplink frequency domain resource wherein the base station detects that the terminal device reaches the first evaluation threshold, including: a moving speed of the terminal device, an average value of MCS changes of the terminal device, and an MCS variance of the terminal device.
  • the BLER of the PUSCH received by the terminal device, the hybrid automatic repeat request of the PUSCH of the terminal device, the number of HARQ retransmissions, and the number of HARQ retransmissions of the terminal device The media intervention controls the error rate or the number of errors of the MAC packet/radio link control RLC packet/transmission control protocol TCP packet/Internet Protocol IP packet, and the MAC packet of the terminal device automatically retransmits the request ARQ times, and the terminal device corresponds to One or more parameters in the quality of service QoS of the service reach a specified threshold;
  • the base station Receiving, by the base station, the two 0.5 ms TTI PUSCHs sent by the terminal device, where the uplink frequency domain resources of the two 0.5 ms TTI PUSCHs include at least one identical physical resource block PRB index or at least An identical resource block group RBG index, the time interval of the two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer;
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the method further includes:
  • the terminal device After detecting, by the base station, that the terminal device reaches the first evaluation threshold, sending, by the terminal device, mode indication information, where the mode indication information is used to indicate that the terminal device sends uplink information from a 0.5 millisecond TTI. Transition to a mode of transmitting uplink information of 1 millisecond TTI;
  • the detecting, by the base station, that the terminal device reaches the first evaluation threshold includes: a moving speed of the terminal device, an average MCS change of the terminal device, an MCS variance of the terminal device, and a PUSCH of the terminal device.
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the method further includes:
  • the base station After detecting, by the base station, that the terminal device reaches the first evaluation threshold, sending, to the terminal device, a preset time interval adjacent to the terminal device sending the channel sounding reference signal SRS One second resource indication information, the second resource indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI; wherein the base station detects that the terminal device reaches the first evaluation threshold includes: The moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER of the PUSCH received by the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, and the number of HARQ retransmissions of the PUSCH of the terminal device The error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a
  • the base station Receiving, by the base station, the PUSCH of the 0.5 millisecond TTI sent by the terminal device, and the base station receiving the SRS sent by the terminal device, where the uplink frequency domain resource of the PUSCH sent by the 0.5 millisecond TTI and the SRS
  • the uplink frequency domain resource is located at least one of the same frequency domain resources, where the preset time interval is less than or equal to m*0.5 milliseconds, and m is a non-zero integer;
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the method further includes:
  • An evaluation threshold includes: a moving speed of the terminal device, an average MCS change of the terminal device, an MCS variance of the terminal device, a BLER received by the PUSCH of the terminal device, and a HARQ retransmission of the PUSCH of the terminal device.
  • the number of times, the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and one or more of the QoS of the service corresponding to the terminal device The parameters reach the specified threshold;
  • a frequency offset value of the terminal device according to a DM-RS and/or a preamble Preamble sequence in an uplink channel in a random access procedure sent by the terminal device where the uplink channel includes: Random access channel PRACH and / or PUSCH;
  • the method further includes:
  • the base station Receiving, by the base station, an uplink channel in a random access procedure that is sent by the terminal device after detecting that the second evaluation threshold is reached, where the uplink channel includes: a PRACH and/or a PUSCH; and the second evaluation threshold includes The difference between the moving speed of the terminal device, the MCS index received by the terminal device and the expected value of the MCS index, and the difference between the MCS index received by the terminal device and the MCS index corresponding to the channel quality indicator CQI reported by the terminal device One or more of the specified thresholds are reached;
  • the base station Determining, by the base station, a frequency offset value of the terminal device according to an uplink channel in the random access procedure that is triggered by the terminal device after detecting that the second evaluation threshold is reached, where the uplink channel includes: PRACH and / or PUSCH;
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • a second aspect of the present invention provides a method for demodulating uplink information, including:
  • the terminal device receives the second modulation and coding method MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is The channel quality of the terminal device and/or the physical uplink shared channel PUSCH receiving target block error rate BLER of the terminal device is selected;
  • the terminal device sends uplink information according to the second MCS index.
  • the method further includes:
  • the terminal device receives at least one first resource indication information, where the first resource indication information is used to indicate uplink frequency domain resources of two 0.5 millisecond TTI PUSCHs; wherein the two 0.5 millisecond TTIs transmit uplink frequency of the PUSCH
  • the domain resource includes at least one identical physical resource block PRB index or includes at least one identical resource block group RBG index, the time interval of the two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer ;
  • the terminal device sends the PUSCH in the two 0.5 millisecond TTIs according to the first resource indication information.
  • the method further includes:
  • the terminal device receives mode indication information, where the mode indication information is used to indicate that the terminal device transitions from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI;
  • the terminal device transitions from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI according to the mode indication information;
  • the terminal device transmits a PUSCH of 1 millisecond TTI.
  • the method further includes:
  • the terminal device receives at least one second resource indication information, where the second resource indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI;
  • the uplink frequency domain resource of the PUSCH and the uplink frequency domain resource where the SRS is located includes at least one same PRB index or at least one identical RBG index, where the preset time interval is less than or equal to m*0.5 milliseconds, m is a non-zero integer.
  • the method further includes:
  • the terminal device sends an uplink channel in the random access procedure according to the random access procedure indication information, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the method further includes:
  • the terminal device detects whether the second evaluation threshold is reached by the terminal device, where the second evaluation threshold includes: a moving speed of the terminal device, a difference between an MCS index received by the terminal device and an expected value of an MCS index, and the terminal And one or more of a difference between an MCS index received by the device and an MCS index corresponding to the channel quality indicator CQI reported by the terminal device reaches a specified threshold;
  • the uplink channel in the random access procedure is sent, where the uplink channel includes: a PRACH and/or a PUSCH.
  • a base station provided by an embodiment of the present invention includes:
  • a selection module configured to select a first modulation and coding method MCS index for the terminal device according to a channel quality of the terminal device and/or a physical uplink shared channel PUSCH receiving target block error rate BLER of the terminal device;
  • a first determining module configured to determine, according to the MCS index backoff value and the first MCS index, a second MCS index that is backed up, where the MCS index backoff value is used to perform the first MCS index Reducing processing to obtain the second MCS index;
  • a first sending module configured to send the second MCS index to the terminal device
  • a calibration module configured to perform frequency offset calibration on a frequency of the terminal device according to a historical frequency offset value of the terminal device, where the historical frequency offset value is a stored frequency offset value of the terminal device;
  • the first receiving module is configured to receive uplink information that is sent by the terminal device according to the second MCS index, and demodulate the PUSCH according to the frequency after the frequency offset calibration.
  • the device further includes:
  • the first determining module is further configured to: after the terminal device performs uplink information transmission of 1 millisecond TTI, determine the frequency of the terminal device according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device. Offset value
  • the first determining module is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the device further includes:
  • the first sending module is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send, to the terminal device, at least one first resource indication information, where the first resource indication information is used to indicate two An uplink frequency domain resource of the PUSCH of the 0.5 millisecond TTI; wherein, detecting that the terminal device reaches the first evaluation threshold includes: a moving speed of the terminal device, an average value of MCS changes of the terminal device, and the terminal device MCS variance, BLER of PUSCH reception of the terminal device, hybrid automatic repeat request of the terminal device, number of HARQ retransmissions, media intervention control of the terminal device, MAC packet/radio link control, RLC packet/transmission control The error rate or the number of errors of the protocol TCP packet/Internet Protocol IP packet, the MAC packet of the terminal device automatically retransmits the number of requests for the ARQ, and one or more parameters of the quality of service QoS of the service corresponding to the terminal device are reached. Specify a threshold;
  • the first receiving module is further configured to receive the two 0.5 millisecond TTI PUSCHs sent by the terminal device, where the uplink frequency domain resources of the two 0.5 millisecond TTI PUSCHs include at least one identical physical The resource block PRB index or at least one of the same resource block group RBG index, the time interval of the two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer;
  • the first determining module is further configured to use two DM-RSs in the PUSCH of the two 0.5 millisecond TTIs, or according to the same PRB index or the same RBG index in the PUSCH of the two 0.5 millisecond TTIs. Determining, by the two DM-RSs in the frequency domain, a frequency offset value of the terminal device;
  • the first determining module is further configured to determine the end according to a frequency offset value of the terminal device The historical frequency offset value of the end device.
  • the device further includes:
  • the first sending module is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send mode indication information to the terminal device; the mode indication information is used to indicate that the terminal device sends 0.5
  • the mode of the uplink information of the millisecond TTI transitions to the mode of transmitting the uplink information of the 1 millisecond TTI;
  • the detecting, by the terminal device, the first evaluation threshold includes: a moving speed of the terminal device, an average MCS change of the terminal device, an MCS variance of the terminal device, and a BLER of the PUSCH received by the terminal device.
  • the number of HARQ retransmissions of the PUSCH of the terminal device, the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and the terminal device One or more parameters in the QoS of the corresponding service reach a specified threshold;
  • the first receiving module is further configured to receive a PUSCH of a 1 millisecond TTI sent by the terminal device;
  • the first determining module is further configured to determine, according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device, a frequency offset value of the terminal device;
  • the first determining module is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the device further includes:
  • the first sending module is further configured to: after detecting that the terminal device reaches the first evaluation threshold, to the terminal within a preset time interval adjacent to the terminal device sending the channel sounding reference signal SRS The device sends the at least one second resource indication information, where the second resource indication information is used to indicate the uplink frequency domain resource of the PUSCH of the 0.5 millisecond TTI; wherein the detecting that the terminal device reaches the first evaluation threshold includes: The moving speed of the terminal device, the mean value of the MCS of the terminal device, the MCS variance of the terminal device, the BLER received by the PUSCH of the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, and the terminal device The error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold ;
  • the first receiving module is further configured to receive the PUSCH of the 0.5 millisecond TTI sent by the terminal device, and receive an SRS sent by the terminal device, where the uplink frequency domain resource of the PUSCH sent by the 0.5 millisecond TTI
  • the uplink frequency domain resource where the SRS is located contains at least one of the same a frequency domain resource, where the preset time interval is less than or equal to m*0.5 milliseconds, and m is a non-zero integer;
  • the first determining module is further configured to: according to the SRS and the DM-RS in the PUSCH of the 0.5 millisecond TTI, or the DM on the same frequency domain resource in the PUSCH according to the SRS and the 0.5 millisecond TTI -RS and SRS, determining a frequency offset value of the terminal device;
  • the first determining module is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the device further includes:
  • the first sending module is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the random access procedure indication information to the terminal device by using a physical downlink control channel PDCCH; where the detecting
  • the first evaluation threshold of the terminal device includes: a moving speed of the terminal device, an average MCS change of the terminal device, an MCS variance of the terminal device, a BLER received by the PUSCH of the terminal device, and the terminal.
  • the number of HARQ retransmissions of the PUSCH of the device, the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and the service corresponding to the terminal device One or more parameters in the QoS reach a specified threshold;
  • the first receiving module is further configured to receive an uplink channel in the random access process that is sent by the terminal device according to the random access procedure indication information;
  • the first determining module is further configured to determine a frequency offset value of the terminal device according to a DM-RS and/or a preamble sequence in an uplink channel in a random access procedure sent by the terminal device, where
  • the uplink channel includes: a physical random access channel PRACH and/or a PUSCH;
  • the first determining module is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the device further includes:
  • the first receiving module is further configured to receive an uplink channel in a random access procedure that is sent by the terminal device after detecting that the second evaluation threshold is reached, where the uplink channel includes: a PRACH and/or a PUSCH;
  • the second evaluation threshold includes: a moving speed of the terminal device, a difference between an MCS index received by the terminal device and an expected value of an MCS index, and an MCS index received by the terminal device corresponds to a channel quality indicator CQI reported by the terminal device.
  • One or more of the differences in the MCS indexes reach a specified threshold;
  • the first determining module is further configured to determine a frequency offset of the terminal device according to an uplink channel in the random access procedure that is triggered by the terminal device after detecting that the second evaluation threshold is reached. a value, wherein the uplink channel comprises: a PRACH and/or a PUSCH;
  • the first determining module is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • a fourth aspect of the present disclosure provides a terminal device, including:
  • a second receiving module configured to receive a second modulation coding method MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index And selecting, by the base station, a target block error rate BLER according to a channel quality of the terminal device and/or a physical uplink shared channel PUSCH of the terminal device;
  • the second sending module is configured to send uplink information according to the second MCS index.
  • the device further includes:
  • the second receiving module is further configured to receive at least one first resource indication information, where the first resource indication information is used to indicate uplink frequency domain resources of two 0.5 millisecond TTI PUSCHs; wherein the two 0.5 milliseconds
  • the uplink frequency domain resource in which the TTI transmits the PUSCH includes at least one identical physical resource block PRB index or includes at least one identical resource block group RBG index, and the time intervals of the two 0.5 millisecond TTIs are less than or equal to n*0.5 milliseconds, n a non-zero positive integer;
  • the second sending module is further configured to send the PUSCH in the two 0.5 millisecond TTIs according to the first resource indication information.
  • the device further includes: a transformation module,
  • the second receiving module is further configured to receive mode indication information, where the mode indication information is used to indicate that the terminal device transitions from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI;
  • the transition module is configured to transition from a mode for transmitting uplink information of 0.5 milliseconds TTI to a mode for transmitting uplink information of 1 millisecond TTI according to the mode indication information;
  • the second sending module is further configured to send a PUSCH of 1 millisecond TTI.
  • the device further includes:
  • the second receiving module is further configured to receive at least one second resource indication information, where the second resource indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI;
  • the second sending module is further configured to send the PUSCH and send the SRS in the 0.5 millisecond TTI according to the second resource indication information;
  • the uplink frequency domain resource of the PUSCH sent by the 0.5 millisecond TTI and the SRS are located therein.
  • the uplink frequency domain resource includes at least one identical PRB index or includes at least one identical RBG index, the preset time interval being less than or equal to m*0.5 milliseconds, and m is a non-zero integer.
  • the device further includes:
  • the second receiving module is further configured to receive random access procedure indication information that is sent by using a PDCCH;
  • the second sending module is further configured to send, according to the random access procedure indication information, an uplink channel in the random access procedure, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the device further includes: a detecting module,
  • the detecting module is configured to detect whether the second evaluation threshold is reached by the terminal device, where the second evaluation threshold includes: a moving speed of the terminal device, a difference between an MCS index received by the terminal device and an expected value of an MCS index, And one or more of a difference between an MCS index received by the terminal device and an MCS index corresponding to the channel quality indicator CQI reported by the terminal device reaches a specified threshold;
  • the second sending module is further configured to: after detecting that the second evaluation threshold is reached, send an uplink channel in a random access procedure, where the uplink channel includes: a PRACH and/or a PUSCH.
  • a base station is provided by the embodiment of the present invention, where the base station includes:
  • the processor is configured to: according to a channel quality of the terminal device, and/or a physical uplink shared channel (PUSCH) of the terminal device, a target block error rate BLER, and select, by the terminal device, a first modulation and coding method, an MCS index; Determining, by the first MCS index, a second MCS index, where the MCS index backoff value is used to perform a reduction process on the first MCS index to obtain the second MCS index; The historical frequency offset value of the terminal device performs frequency offset calibration on the frequency of the terminal device, where the historical frequency offset value is a frequency offset value of the terminal device stored by itself; and is calibrated according to the frequency offset Subsequent frequency demodulation of PUSCH;
  • PUSCH physical uplink shared channel
  • the transmitter is configured to send the second MCS index to the terminal device
  • the receiver is configured to receive uplink information that is sent by the terminal device according to the second MCS index.
  • the processor is further configured to: when the terminal device performs uplink information transmission of 1 millisecond TTI, according to the PUSCH of the 1 millisecond TTI sent by the terminal device a DM-RS, determining a frequency offset value of the terminal device; determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the transmitter is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the at least one first resource indication information to the terminal device
  • the first resource indication information is used to indicate an uplink frequency domain resource of the PUSCH of the two 0.5 milliseconds TTI; wherein, detecting that the terminal device reaches the first evaluation threshold includes: a moving speed of the terminal device, The mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER of the PUSCH received by the terminal device, the hybrid automatic retransmission request HARQ retransmission times of the PUSCH of the terminal device, and the media intervention control of the terminal device MAC packet/radio link control RLC packet/transmission control protocol TCP packet/Internet Protocol IP packet error rate or error number, the MAC packet of the terminal device automatically retransmits the request ARQ times, the service corresponding to the terminal device One or more parameters in the quality QoS reach a specified threshold;
  • the receiver is further configured to receive the two 0.5 millisecond TTI PUSCHs sent by the terminal device, where the uplink frequency domain resources of the two 0.5 millisecond TTI PUSCHs include at least one same physical resource block.
  • the PRB index either contains at least one identical resource block group RBG index, the time interval of the two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer;
  • the processor is further configured to: according to the two DM-RSs in the two 0.5 millisecond TTI PUSCHs, or the frequency domain of the same PRB index or the same RBG index in the PUSCH of the two 0.5 millisecond TTIs And determining, by the two DM-RSs, a frequency offset value of the terminal device; determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the transmitter is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send mode indication information to the terminal device;
  • the indication information is used to indicate that the terminal device changes from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI;
  • detecting that the terminal device reaches the first evaluation threshold includes: the terminal The moving speed of the device, the average MCS change of the terminal device, the MCS variance of the terminal device, the BLER received by the PUSCH of the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, and the MAC address of the terminal device
  • the error rate or the number of errors of the packet/RLC packet/TCP packet/IP packet, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the receiver is further configured to receive a PUSCH of a 1 millisecond TTI sent by the terminal device;
  • the processor is further configured to determine, according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device, a frequency offset value of the terminal device; according to the frequency offset value of the terminal device, Determining a historical frequency offset value of the terminal device.
  • the transmitter is further configured to: when detecting that the terminal device reaches the first evaluation threshold, send a channel sounding reference signal SRS to the terminal device Sending at least one second resource indication information to the terminal device, where the second resource indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI;
  • the terminal device reaches the first evaluation threshold, including: a moving speed of the terminal device, an average MCS change of the terminal device, an MCS variance of the terminal device, a BLER received by the PUSCH of the terminal device, and the terminal device
  • the number of HARQ retransmissions of the PUSCH, the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and the QoS of the service corresponding to the terminal device One or more parameters in the parameter reach a specified threshold;
  • the receiver is further configured to receive the PUSCH of the 0.5 millisecond TTI sent by the terminal device, and receive an SRS sent by the terminal device, where the uplink frequency domain resource of the PUSCH sent by the 0.5 millisecond TTI
  • the uplink frequency domain resource where the SRS is located includes at least one same frequency domain resource, where the preset time interval is less than or equal to m*0.5 milliseconds, and m is a non-zero integer;
  • the processor is further configured to: according to the SRS and the DM-RS in the PUSCH of the 0.5 millisecond TTI, or the DM-RS on the same frequency domain resource in the PUSCH according to the SRS and the 0.5 millisecond TTI And determining, by the SRS, a frequency offset value of the terminal device; determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the transmitter is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send a random to the terminal device by using a physical downlink control channel PDCCH
  • the access process indication information wherein the detecting that the terminal device reaches the first evaluation threshold includes: a moving speed of the terminal device, an average value of MCS changes of the terminal device, and an MCS variance of the terminal device, where The BLER of the PUSCH received by the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, and the MAC address of the terminal device
  • One or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the receiver is further configured to receive an uplink channel in the random access procedure that is sent by the terminal device according to the random access procedure indication information;
  • the processor is further configured to determine a frequency offset value of the terminal device according to a DM-RS and/or a preamble sequence in an uplink channel in a random access procedure sent by the terminal device, where
  • the uplink channel includes: a physical random access channel PRACH and/or a PUSCH; and determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the receiver is further configured to receive an uplink channel in the random access process that is sent by the terminal device after detecting that the second evaluation threshold is reached, where
  • the uplink channel includes: a PRACH and/or a PUSCH;
  • the second evaluation threshold includes: a moving speed of the terminal device, a difference between an MCS index received by the terminal device and an expected value of an MCS index, and an MCS received by the terminal device And one or more of the difference between the index and the MCS index corresponding to the channel quality indicator CQI reported by the terminal device reaches a specified threshold;
  • the processor is further configured to determine a frequency offset value of the terminal device according to an uplink channel in the random access process that is triggered by the terminal device after detecting that the second evaluation threshold is reached, where the uplink is
  • the channel includes: a PRACH and/or a PUSCH; and determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • a sixth aspect of the present disclosure provides a terminal device, where the terminal device includes:
  • the receiver is configured to receive a second modulation coding method MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is obtained. And selecting, by the base station, a target block error rate BLER according to a channel quality of the terminal device and/or a physical uplink shared channel PUSCH of the terminal device;
  • the transmitter is configured to send uplink information according to the second MCS index.
  • the receiver is further configured to receive at least one first resource indication information, where the first resource indication information is used to indicate uplink of two 0.5 millisecond TTI PUSCHs.
  • a frequency domain resource where the uplink frequency domain resources of the two 0.5 millisecond TTI transmission PUSCHs include at least one identical physical resource block PRB index or at least one identical resource block group RBG index, the two 0.5 millisecond TTIs
  • the time interval is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer;
  • the transmitter is further configured to send the PUSCH in the two 0.5 millisecond TTIs according to the first resource indication information.
  • the terminal device further includes: a processor,
  • the receiver is further configured to receive mode indication information, where the mode indication information is used to indicate a mode of transitioning from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI;
  • the processor is configured to transition from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI according to the mode indication information;
  • the transmitter is further configured to send a PUSCH of 1 millisecond TTI.
  • the receiver is further configured to receive at least one second resource indication information, where the second resource indication information is used to indicate an uplink frequency domain of a PUSCH of a 0.5 millisecond TTI Resource
  • the transmitter is further configured to send the PUSCH and send the SRS in the 0.5 millisecond TTI according to the second resource indication information.
  • the uplink frequency domain resource of the PUSCH and the uplink frequency domain resource where the SRS is located includes at least one same PRB index or at least one identical RBG index, where the preset time interval is less than or equal to m*0.5 milliseconds, m is a non-zero integer.
  • the receiver is further configured to receive random access procedure indication information that is sent by using a PDCCH;
  • the transmitter is further configured to send, according to the random access procedure indication information, an uplink channel in the random access procedure, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the terminal device further includes: a processor,
  • the processor is configured to detect whether the second evaluation threshold is reached by the terminal device, where the second evaluation threshold includes: a moving speed, a difference between the received MCS index and an expected value of the MCS index, and an MCS index received by the terminal device. And one or more of the differences between the MCS indexes corresponding to the channel quality indication CQI reported by the terminal device reach a specified threshold;
  • the transmitter is further configured to: after detecting that the second evaluation threshold is reached, send an uplink channel in a random access procedure, where the uplink channel includes: a PRACH and/or a PUSCH.
  • a seventh aspect of the present invention provides a system for demodulating uplink information, where the system includes: a base station and a terminal device,
  • the base station includes:
  • a selection module configured to select a first modulation and coding method MCS index for the terminal device according to a channel quality of the terminal device and/or a physical uplink shared channel PUSCH receiving target block error rate BLER of the terminal device;
  • a first determining module configured to determine a second MCS index according to the MCS index backoff value and the first MCS index, where the MCS index backoff value is used to subtract the first MCS index Small processing to obtain the second MCS index;
  • a first sending module configured to send the second MCS index to the terminal device
  • a calibration module configured to perform frequency offset calibration on a frequency of the terminal device according to a historical frequency offset value of the terminal device, where the historical frequency offset value is a stored frequency offset value of the terminal device ;
  • a first receiving module configured to receive uplink information that is sent by the terminal device according to the second MCS index, and demodulate the PUSCH according to a frequency after the frequency offset calibration
  • the terminal device includes:
  • a second receiving module configured to receive a second MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is The base station is selected according to the channel quality of the terminal device and/or the PUSCH receiving target block error rate BLER of the terminal device;
  • the second sending module is configured to send uplink information according to the second MCS index.
  • the technical solution provided by the embodiment of the present invention performs the rollback processing on the MCS index according to the preset MCS index rollback index, and indicates the MCS index after the rollback to the terminal device, and records the
  • the historical frequency offset value performs frequency offset estimation on the terminal device, and after the frequency offset estimation, the demodulation terminal device transmits the PUSCH according to the back-off MCS index.
  • the frequency offset value is determined by the pre-recorded historical frequency offset value, and the frequency offset value does not need to be determined by adding the DM-RS symbol in the 0.5 millisecond TTI in the prior art, thereby reducing resource occupation and improving data. Transmission efficiency and reduced system overhead of reference signals.
  • FIG. 1 is a flowchart of a method for demodulating uplink information according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for demodulating uplink information according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for demodulating uplink information according to Embodiment 3 of the present invention.
  • FIG. 5 is a flowchart of a method for demodulating uplink information according to Embodiment 3 of the present invention.
  • FIG. 6 is a flowchart of a method for demodulating uplink information according to Embodiment 3 of the present invention.
  • FIG. 7 is a flowchart of a method for demodulating uplink information according to Embodiment 3 of the present invention.
  • FIG. 9 is a schematic structural diagram of a base station according to Embodiment 4 of the present invention.
  • FIG. 10 is a schematic structural diagram of a terminal device according to Embodiment 5 of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to Embodiment 6 of the present invention.
  • FIG. 12 is a schematic structural diagram of a terminal device according to Embodiment 7 of the present invention.
  • FIG. 13 is a schematic structural diagram of a system for demodulating uplink information according to Embodiment 8 of the present invention.
  • GSM Global System for Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • a terminal device which may also be called a mobile terminal (Mobile Terminal), a user equipment (User Equipment), a mobile terminal device, etc., may be accessed via a radio access network (for example, a RAN (Radio Access Network) )) communicating with one or more core networks, which may be mobile terminals, such as mobile phones (or “cellular" phones) and computers with mobile terminals, for example, portable, pocket, handheld, Computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network.
  • a radio access network for example, a RAN (Radio Access Network)
  • core networks which may be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket, handheld, Computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • e-NodeB evolutional Node B
  • the embodiment of the invention provides a method for demodulating uplink information, as shown in FIG. 1 .
  • the method comprises:
  • the base station receives the target block error rate BLER according to the channel quality of the terminal device and/or the physical uplink shared channel PUSCH of the terminal device, and selects a first modulation and coding method MCS index for the terminal device.
  • Step 102 The base station determines, according to the MCS index backoff value and the first MCS index, a second MCS index, where the MCS index backoff value is used to perform a reduction process on the first MCS index to obtain a second MCS index.
  • the uplink information may include: a reference signal, a sounding signal, and a physical channel.
  • the terminal device may be affected by factors such as the current moving speed and the channel quality, and the eNodeB is based on the historical frequency of the pre-recorded terminal device.
  • the offset value is inaccurate in frequency offset calibration of the frequency of the terminal device, which in turn causes the PUSCH of the demodulation terminal device to be inaccurate.
  • the MCS index determined by the base station according to the channel quality of the terminal device may include, but is not limited to, an MCS index determined by the base station according to a CQI (Channel Quality Indicator) reported by the terminal device, or the base station reports the device according to the terminal device.
  • the MCS index determined by the channel sounding reference signal, or the MCS index determined by the base station to determine the channel quality of the terminal device is not limited herein.
  • the method for transmitting the second MCS index to the terminal device may include, but is not limited to, a PDCCH (Physical Downlink Control Channel) or an Enhanced Physical Downlink Control Channel (EPDCCH).
  • PDCCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • the base station sends the second MCS index to the terminal device.
  • the base station performs frequency offset on the frequency of the terminal device according to the historical frequency offset value of the terminal device.
  • the calibration is performed, wherein the historical frequency offset value is a frequency offset value of the terminal device stored by the base station.
  • the eNodeB records the historical frequency offset value of each terminal device.
  • the eNodeB can obtain the historical frequency offset value of each terminal device by:
  • the uplink information sent by the terminal device is obtained;
  • the base station receives the uplink information sent by the terminal device according to the second MCS index, and demodulates the PUSCH according to the frequency after the frequency offset calibration.
  • the MCS index is reduced according to the preset MCS index rollback index, and the reduced MCS index is indicated to the terminal device, and the historical frequency offset is recorded.
  • the shift value performs frequency offset estimation on the terminal device, and after the frequency offset estimation, the demodulation terminal device transmits the PUSCH according to the reduced MCS index.
  • the embodiment of the invention provides a method for demodulating uplink information, as shown in FIG. 2 .
  • the method comprises:
  • the terminal device receives the second MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is the channel quality of the base station according to the terminal device. Or the physical uplink shared channel PUSCH receiving target block error rate BLER of the terminal device is selected;
  • the terminal device sends uplink information according to the second MCS index.
  • the uplink information may include: a reference signal, a sounding signal, and a physical channel.
  • the terminal device sends the uplink information according to the reduced MCS index, so that the rate at which the terminal device sends the uplink information to the base station is reduced, and the uplink is improved when the base station uses the historical frequency offset value to perform inaccurate frequency calibration. Reliability of information, thereby improving the transmission of terminal equipment The accuracy of the upstream information.
  • An embodiment of the present invention provides a method for determining a historical frequency offset value of a terminal device in a method for demodulating uplink information, as shown in FIG. 3 .
  • the method includes:
  • the base station determines the frequency offset value of the terminal device according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device.
  • the method for triggering the terminal device to perform uplink information transmission of 1 millisecond TTI is not limited.
  • the eNodeB can determine the frequency offset value by transmitting, by the terminal device, the phase difference of two DM-RSs in the PUSCH in a 1 millisecond TTI.
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit UCI (Uplink Control Information) of the terminal device.
  • UCI Uplink Control Information
  • the manner in which the base station determines the historical frequency offset value of the terminal device may include, but is not limited to, the base station calculates a frequency offset value by using a phase difference between the two DM-RSs, and stores or replaces the frequency offset offset value with the terminal device.
  • the historical frequency offset value may include, but is not limited to, the base station calculates a frequency offset value by using a phase difference between the two DM-RSs, and stores or replaces the frequency offset offset value with the terminal device.
  • the embodiment of the present invention determines the historical frequency offset value of the terminal device based on the DM-RS in the PUSCH of the 1 millisecond TTI by performing the uplink information transmission of the 1 millisecond TTI in the terminal device. It is not necessary to determine the frequency offset value in the manner of adding the DM-RS symbol in each 0.5 millisecond TTI in the existing manner, thereby reducing the occupation of the reference signal resource, improving the data transmission efficiency and reducing the system overhead of the reference signal.
  • the embodiment of the present invention provides another method for determining a historical frequency offset value of a terminal device in a method for demodulating uplink information, as shown in FIG. 4 .
  • the method includes:
  • the base station After detecting that the terminal device reaches the first evaluation threshold, the base station sends, to the terminal device, at least one first resource indication information, where the first resource indication information is used to indicate uplink frequency domain resources of the PUSCH of the two 0.5 millisecond TTIs.
  • the base station detects that the terminal device reaches the first evaluation threshold, including: the moving speed of the terminal device, the average value of the MCS of the terminal device, the MCS variance of the terminal device, and the PUSCH of the terminal device.
  • the number of requests, one or more parameters of the QoS (Quality of Service) of the service corresponding to the terminal device reaches a specified threshold.
  • the eNodeB sends the at least one resource indication information to the terminal device, which may be DCI (Downlink Control Information) or higher layer signaling.
  • the higher layer signalling may include, but is not limited to, RNC (Radio Network Controller) signaling, RRC (Radio Resource Control) signaling, MAC signaling, or carried in a broadcast message. Signaling.
  • RNC Radio Network Controller
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the eNodeB sends two DCIs to the terminal device through the PDCCH or the EPDCCH at different times.
  • One DCI indicates that the terminal device is in the uplink frequency domain resource of the PUSCH of a 0.5 millisecond TTI; or the eNodeB passes the PDCCH or the EPDCCH at the same time.
  • the uplink frequency domain resource of the PUSCH of the two 0.5 millisecond TTIs of the terminal device needs to meet at least one of the same frequency domain resources.
  • the terminal device receives at least one first resource indication information, where the first resource indication information is used to indicate uplink frequency domain resources of PUSCHs of two 0.5 millisecond TTIs;
  • the uplink frequency domain resource for transmitting the PUSCH by the two 0.5 millisecond TTIs includes at least one same physical resource block (PRB) physical resource block (PRB) index or at least one of the same resource block group (RBG).
  • Block group) index the interval of two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer.
  • the terminal device sends the PUSCH in two 0.5 millisecond TTIs according to the first resource indication information.
  • the base station receives two PUMSs of the 0.5 millisecond TTI sent by the terminal device, where the uplink frequency domain resources of the two 0.5 millisecond TTI PUSCHs include at least one identical physical resource block PRB index or at least one identical resource block group.
  • RBG index the interval of two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer.
  • the implementation may be extended: if the base station receives two 0.5 millisecond TTIs sent by the terminal device with a time interval greater than n*0.5 milliseconds, and n is a non-zero positive integer, the base station will not perform Step 405 and step 406, that is, the frequency offset value of the terminal device is not determined or updated.
  • the base station determines, according to two DM-RSs in the PUSCH of two 0.5 millisecond TTIs, or two DM-RSs in the frequency domain according to the same PRB index or the same RBG index of the two 0.5 millisecond TTIs.
  • the frequency offset value of the terminal device is not limited to two DM-RSs in the PUSCH of two 0.5 millisecond TTIs, or two DM-RSs in the frequency domain according to the same PRB index or the same RBG index of the two 0.5 millisecond TTIs.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the eNodeB may determine a frequency offset value according to a phase difference between the two DM-RSs in the PUSCH of the two 0.5 millisecond TTIs of the terminal device, where a DM-RS is included in the PUSCH of each 0.5 millisecond TTI; or, according to The phase difference between the two DM-RSs on the same PRB index or RBG index of two 0.5 millisecond TTIs determines the frequency offset value.
  • the two DM-RSs in the frequency domain of the same PRB index or the same RBG index in the two PUMS TTIs may not be all code subsequences of the DM-RS, that is, only part of the DM-RS on the PUSCH. Code subsequence.
  • the base station may determine the frequency offset value according to the phase difference of the partial code subsequence of the two DM-RSs in the frequency domain of the same PRB index or the same RBG index.
  • the code subsequence can be any sequence of numbers and is not limited herein. Exemplary are, for example, ZC (Zadoff-Chu) sequences.
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the base station only when two PUSCHs of two 0.5 ms TTIs contain the same frequency domain resource, such as the same PRB index or the same RBG index, the base station will perform DM-based on two 0.5 ms TTIs.
  • the phase difference of the RS determines the frequency offset value. It can be understood that if two PUSCHs of two 0.5 ms TTIs do not contain the same frequency domain resource, the base station does not determine the frequency offset value according to the phase difference of the DM-RSs on the two 0.5 ms TTIs.
  • the embodiment of the present invention determines that the terminal device transmits the PUSCH in two 0.5 millisecond TTIs, and the base station determines the historical frequency offset value of the terminal device based on the two DM-RSs that send the PUSCH in the received two 0.5 millisecond TTIs. It is not necessary to determine the frequency offset value in the manner of adding the DM-RS symbol in each 0.5 millisecond TTI in the existing manner, thereby reducing the occupation of the reference signal resource, improving the data transmission efficiency and reducing the system overhead of the reference signal.
  • An embodiment of the present invention provides another method for determining a historical frequency offset value of a terminal device in a method for demodulating uplink information, as shown in FIG. 5.
  • the method includes:
  • the mode indication information is used to indicate that the terminal device transitions from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI;
  • the uplink information includes, but is not limited to, a PRACH (Physical Random Access Channel), a PUSCH, and a PUCCH (Physical Uplink Control Channel).
  • a PRACH Physical Random Access Channel
  • a PUSCH Physical Uplink Control Channel
  • PUCCH Physical Uplink Control Channel
  • the base station detects that the terminal device reaches the first evaluation threshold, including: the moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER of the PUSCH received by the terminal device, and the HARQ retransmission of the PUSCH of the terminal device.
  • the number of times, the error rate or number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold. .
  • the terminal device receives mode indication information, where the mode indication information is used to indicate that the terminal device transitions from a mode of transmitting uplink information of a 0.5 millisecond TTI to a mode of transmitting uplink information of a 1 millisecond TTI.
  • the terminal device transitions from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI according to mode indication information;
  • the mode of the terminal device changing from the mode of transmitting the uplink information of the 0.5 millisecond TTI to the mode of transmitting the uplink information of the 1 millisecond TTI according to the mode indication information may be immediately after the mode indication information is received, and the uplink is sent to the uplink of the 1 millisecond TTI.
  • the mode of the information may also be a mode in which the uplink information of the 1 millisecond TTI is transmitted after X time slots, where X is a positive integer greater than or equal to 6.
  • the terminal device sends a PUSCH of 1 millisecond TTI.
  • the base station receives the PUSCH of the 1 millisecond TTI sent by the terminal device.
  • the base station determines a frequency offset value of the terminal device according to the DM-RS in the PUSCH of the 1 millisecond TTI transmitted by the terminal device.
  • the eNodeB can determine the frequency offset value by transmitting, by the terminal device, the phase difference of two DM-RSs in the PUSCH in a 1 millisecond TTI.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the base station determines the historical frequency offset value of the terminal device based on the two DM-RSs of the PUSCH of the received 1-ms TTI. There is no need to determine the frequency by adding DM-RS symbols in each 0.5 millisecond TTI as in the prior art.
  • the offset value thus reducing the occupation of reference signal resources, improving data transmission efficiency and reducing the system overhead of the reference signal.
  • the embodiment of the present invention provides another method for determining a historical frequency offset value of a terminal device in a method for demodulating uplink information, as shown in FIG. 6.
  • the method includes:
  • the base station After detecting that the terminal device reaches the first evaluation threshold, the base station sends at least one second resource indication information, the second resource, to the terminal device in a preset time interval adjacent to the terminal device sending the channel sounding reference signal SRS.
  • the indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI;
  • the detecting the terminal device reaches the first evaluation threshold, including: the moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER received by the PUSCH of the terminal device, and the number of HARQ retransmissions of the PUSCH of the terminal device.
  • the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the eNodeB sends the DCI to the terminal device through the PDCCH or the EPDCCH, and indicates the uplink frequency domain resource of the PUSCH of the terminal device in the 0.5 millisecond TTI in the DCI.
  • the uplink frequency domain resource of the PUSCH of the terminal device in the 0.5 millisecond TTI needs to satisfy the same frequency domain resource as the SRS sent by the terminal device.
  • the eNodeB can learn to send the PUSCH to the terminal device in a preset time interval before or after the SRS is sent, because the eNodeB can learn the transmission time of the periodic or non-periodic SRS (Sounding Reference Signal) of the terminal device.
  • the uplink frequency resource that transmits the SRS by the terminal device and the uplink frequency resource of the scheduled PUSCH of the terminal device have the same frequency resource, thereby determining the frequency offset value of the terminal device.
  • the terminal device receives at least one second resource indication information, where the second resource indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI;
  • the terminal device sends the PUSCH and sends the SRS in a 0.5 millisecond TTI according to the second resource indication information.
  • the uplink frequency domain resource of the PUSCH and the uplink frequency domain resource where the SRS is located in the 0.5 ms TTI includes at least one same PRB index or at least one identical RBG index, and the preset time interval is less than or equal to m*0.5 milliseconds, m Is a non-zero integer;
  • m is a negative integer, it indicates that the PUSCH is sent before the symbol of the SRS, if m A positive integer indicates that the PUSCH is sent after the symbol of the SRS.
  • the base station receives the PUSCH of the 0.5 millisecond TTI sent by the terminal device, and the base station receives the SRS sent by the terminal device, where the uplink frequency domain resource of the PUSCH transmitted by the 0.5 millisecond TTI and the uplink frequency domain resource where the SRS is located include at least one of the same frequency. Domain resource, the preset time interval is less than or equal to m*0.5 milliseconds, and m is a non-zero integer;
  • the frequency domain resource may include at least one identical RBG index or include at least one identical RBG index.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the implementation may be extended: if the base station receives the PUSCH of the 0.5 millisecond TTI transmitted by the terminal device, and the time interval of the SRS sent by the base station to the terminal device is greater than m*0.5 milliseconds, and m is a non-zero integer, then the base station Step 605 and step 606 will not be performed, ie the frequency offset value of the terminal device will not be determined or updated.
  • 605 Determine a frequency offset value of the terminal device according to the DM-RS in the PUSCH of the SRS and the 0.5 millisecond TTI, or the DM-RS and the SRS on the same frequency domain resource in the PUSCH of the SRS and the 0.5 millisecond TTI.
  • the uplink frequency domain resource of the SRS sent by the eNodeB and the phase difference of the DM-RS in the PUSCH transmitted by the terminal device in the 0.5 millisecond TTI determine the frequency offset value; or the uplink frequency of the SRS sent by the eNodeB at the terminal device
  • the domain resource and the phase difference of the DM-RS on the same PRB index or the same RBG index of the terminal device in the 0.5 millisecond TTI determine the frequency offset value.
  • the uplink frequency domain resource of the SRS includes all code subsequences of one SRS; the terminal equipment transmits a code subsequence including all DM-RSs in the PUSCH in a 0.5 millisecond TTI, and the terminal device can according to the phase difference frequency of the two code subsequences. Offset value.
  • the code subsequence of the DM-RS on the same PRB index of the PUSCH and the SRS or the DM-RS of the same RBG index may not be the code subsequence of all the DM-RSs, that is, only the DM-RS on the PUSCH. Partial code subsequence.
  • the code subsequence of the SRS that transmits the same PRB index of the PUSCH and the SRS or the SRS of the same RBG index in the 0.5 ms TTI may not be the code subsequence of all SRSs, that is, only the partial code subsequence of the SRS on the PUSCH.
  • the terminal device may be the SRS code subsequence or the partial SRS code subsequence according to the SRS code subsequence and the DM-RS code subsequence phase difference frequency offset value, and the DM-RS code subsequence may be All of the above DM-RS code subsequences may also be partial The code subsequence of the DM-RS.
  • the code subsequence can be any sequence of numbers and is not limited herein. Exemplary are, for example, ZC (Zadoff-Chu) sequences.
  • the terminal device includes a DM-RS on the same PRB index or RBG index frequency in a 0.5 millisecond TTI.
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the embodiment of the present invention determines the historical frequency offset value of the terminal device by indicating that the terminal device transmits the PUSCH and transmits the SRS in the 0.5 millisecond TTI, and the base station determines the DM-RS and the SRS of the PUSCH of the received 0.5 millisecond TTI. It is not necessary to determine the frequency offset value in the manner of adding the DM-RS symbol in each 0.5 millisecond TTI in the existing manner, thereby reducing the occupation of the reference signal resource, improving the data transmission efficiency and reducing the system overhead of the reference signal.
  • the embodiment of the present invention provides another method for determining a historical frequency offset value of a terminal device in a method for demodulating uplink information, as shown in FIG. 7.
  • the method includes:
  • the base station After the base station detects that the terminal device reaches the first evaluation threshold, the base station sends the random access procedure indication information to the terminal device by using the physical downlink control channel PDCCH.
  • the detecting the terminal device reaches the first evaluation threshold, including: the moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER received by the PUSCH of the terminal device, and the number of HARQ retransmissions of the PUSCH of the terminal device.
  • the error rate or number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold.
  • the frequency offset value of the terminal device is determined by instructing the terminal device to trigger an uplink channel in the random access procedure.
  • the terminal device receives the random access procedure indication information that is sent by using the PDCCH.
  • the terminal device sends an uplink channel in a random access procedure according to the random access procedure indication information, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the base station receives a random access procedure that is sent by the terminal device according to the random access procedure indication information.
  • Upstream channel
  • the PRACH and/or the PUSCH sent after the terminal device triggers the random access procedure performs uplink information transmission of 1 millisecond TTI.
  • the eNodeB determines the frequency offset value by transmitting the Preamble sequence offset of the PRACH or the phase difference of the two DM-RSs of the PUSCH by the terminal device.
  • the base station determines the uplink frequency offset value of the terminal device according to the offset condition of the Preamble sequence in the random access procedure.
  • the embodiment of the present invention indicates that the terminal device sends the uplink channel in the random access process, and the base station determines the historical frequency offset of the terminal device based on the received DM-RS in the uplink channel in the random access procedure sent by the terminal device. value. It is not necessary to determine the frequency offset value in the manner of adding the DM-RS symbol in each 0.5 millisecond TTI in the existing manner, thereby reducing the occupation of the reference signal resource, improving the data transmission efficiency and reducing the system overhead of the reference signal.
  • the embodiment of the present invention provides another method for determining a historical frequency offset value of a terminal device in a method for demodulating uplink information, as shown in FIG. 8.
  • the method includes:
  • the terminal device detects whether the second evaluation threshold is reached.
  • the second evaluation threshold includes: a moving speed of the terminal device, a difference between an MCS index received by the terminal device and an expected value of the MCS index, and an MCS index and a terminal device received by the terminal device.
  • One or more of the differences in the MCS indexes corresponding to the CQI are reported to reach a specified threshold.
  • the second evaluation threshold set in the terminal device in advance.
  • the terminal device When the terminal device detects that the second evaluation threshold is reached, the difference between the MCS index received by the terminal device and the expected value of the MCS index, and the difference between the MCS index received by the terminal device and the MCS index corresponding to the CQI reported by the terminal device. One or more of the specified thresholds are reached.
  • the terminal device After the terminal device detects that the second evaluation threshold is reached, the terminal device sends an uplink channel in the random access process, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the base station receives an uplink channel in a random access procedure that is sent by the terminal device after detecting that the second evaluation threshold is reached, where the uplink channel includes: a PRACH and/or a PUSCH, where the second evaluation threshold includes: Movement speed, MCS index and MCS received by the terminal device The difference between the expected values of the index, one or more of the difference between the MCS index received by the terminal device and the MCS index corresponding to the CQI reported by the terminal device reaches a specified threshold.
  • the base station determines, according to the uplink channel in the random access procedure that is triggered by the terminal device after detecting that the second evaluation threshold is reached, the uplink channel includes: PRACH and/or PUSCH;
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the PRACH and/or the PUSCH sent after the terminal device triggers the random access procedure performs uplink information transmission of 1 millisecond TTI.
  • the eNodeB determines the frequency offset value by transmitting the Preamble sequence offset of the PRACH or the phase difference of the two DM-RSs of the PUSCH by the terminal device.
  • the base station determines a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the base station determines the historical frequency offset of the terminal device based on the uplink channel in the random access process sent by the terminal device. Move the value. It is not necessary to determine the frequency offset value in the manner of adding the DM-RS symbol in each 0.5 millisecond TTI in the existing manner, thereby reducing the occupation of the reference signal resource, improving the data transmission efficiency and reducing the system overhead of the reference signal.
  • An embodiment of the present invention provides a base station, as shown in FIG.
  • the base station includes:
  • the selecting module 901 is configured to select a first modulation and coding method MCS index for the terminal device according to the channel quality of the terminal device and/or the physical uplink shared channel PUSCH receiving target block error rate BLER of the terminal device;
  • the first determining module 902 is configured to determine a second MCS index according to the MCS index backoff value and the first MCS index, where the MCS index backoff value is used to perform a reduction process on the first MCS index to obtain a second MCS index. ;
  • the first sending module 903 is configured to send the second MCS index to the terminal device.
  • the calibration module 904 is configured to input the frequency of the terminal device according to the historical frequency offset value of the terminal device a line frequency offset calibration, wherein the historical frequency offset value is a frequency offset value of the stored terminal device;
  • the first receiving module 905 is configured to receive uplink information that is sent by the terminal device according to the second MCS index, and demodulate the PUSCH according to the frequency after the frequency offset calibration.
  • the uplink information may include: a reference signal, a sounding signal, and a physical channel.
  • the terminal device may be affected by factors such as the current moving speed and the channel quality, and the eNodeB is based on the historical frequency of the pre-recorded terminal device.
  • the offset value is inaccurate in frequency offset calibration of the frequency of the terminal device, which in turn causes the PUSCH of the demodulation terminal device to be inaccurate.
  • an MCS index backoff value is set in advance in the eNodeB, and the MCS index determined according to the channel quality of the terminal device and/or the PUSCH received by the terminal of the PUSCH of the terminal device is indexed by the MCS index backoff value.
  • the manner of sending the second MCS index to the terminal device may include, but is not limited to, a PDCCH or an EPDCCH.
  • the MCS index determined by the base station according to the channel quality of the terminal device may include, but is not limited to, an MCS index determined by the base station according to the CQI reported by the terminal device, or an MCS index determined by the base station according to the RSRP reported by the terminal device, or the base station according to the The terminal device reports the MCS index determined by the RSRQ, and the base station determines the MCS index determined by the terminal device to report the MCS index determined by the SRS, or the base station determines other MCS indexes that can be used to determine the channel quality of the terminal device, which is not limited herein.
  • the base station in this embodiment can implement the process in the embodiment shown in FIG. 1 of the present invention.
  • the first determining module 902 is further configured to: after the terminal device performs the uplink information transmission of the 1 millisecond TTI, determine the frequency offset value of the terminal device according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device. ;
  • the first determining module 902 is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the manner in which the base station determines the historical frequency offset value of the terminal device may include, but is not limited to, the base station calculates a frequency offset value by using a phase difference between two DM-RSs, and stores or replaces the frequency offset offset value. Change the historical frequency offset value of this terminal device.
  • the base station in this embodiment can also implement the process in the embodiment shown in FIG. 3 of the present invention.
  • the first sending module 903 is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the at least one first resource indication information to the terminal device, where the first resource indication information is used to indicate two 0.5 milliseconds.
  • the hybrid automatic repeat request of the PUSCH of the terminal device requests the number of HARQ retransmissions, and the media intervention of the terminal device controls the error rate or the number of errors of the MAC packet/radio link control RLC packet/transmission control protocol TCP packet/Internet Protocol IP packet, the terminal device
  • the MAC packet automatically retransmits the number of requests for the ARQ, and one or more parameters of the quality of service QoS of the service corresponding to the
  • the first receiving module 905 is further configured to receive the two 0.5 millisecond TTI PUSCHs sent by the terminal device, where the uplink frequency domain resources of the two 0.5 millisecond TTI PUSCHs include at least one identical physical resource block PRB.
  • the index or at least one of the same resource block group RBG index, the time interval of two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer;
  • the implementation may be extended: if the base station receives the time interval of two 0.5 millisecond TTIs sent by the terminal device is greater than n*0.5 milliseconds, and n is a non-zero positive integer, the base station will not execute the first determining module.
  • the first determining module 902 is further configured to: use two DM-RSs in the PUSCH according to the two 0.5 millisecond TTIs, or the same PRB index or the same RBG index in the PUSCH of the two 0.5 millisecond TTIs. Determining the frequency offset value of the terminal device by two DM-RSs on the domain;
  • the first determining module 902 is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the eNodeB may determine the frequency offset value according to the phase difference of the two DM-RSs in the PUSCH of the two 0.5 millisecond TTIs of the terminal device. Wherein, one DM-RS is included in the PUSCH of each 0.5 millisecond TTI; or the frequency offset value is determined according to the phase difference of two DM-RSs on the same PRB index or the frequency of the RBG index of two 0.5 millisecond TTIs .
  • the two DM-RSs in the frequency domain of the same PRB index or the same RBG index in the two PUMS TTIs may not be all code subsequences of the DM-RS, that is, only Partial code subsequence of the DM-RS on the PUSCH.
  • the terminal device may according to the same PRB index or the phase difference frequency offset value of the partial code subsequence of the two DM-RSs in the frequency domain of the same RBG index.
  • the code subsequence can be any sequence of numbers and is not limited herein. Exemplary are, for example, ZC (Zadoff-Chu) sequences.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the base station in the embodiment of the present invention can also implement the flow implemented by the base station side in the embodiment shown in FIG. 4 of the present invention.
  • the first sending module 903 is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the mode indication information to the terminal device; the mode indication information is used to indicate that the terminal device sends the uplink information from the 0.5 millisecond TTI. Mode of transitioning to the mode of transmitting uplink information of 1 millisecond TTI;
  • the detecting the terminal device reaches the first evaluation threshold, including: the moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER received by the PUSCH of the terminal device, and the number of HARQ retransmissions of the PUSCH of the terminal device.
  • the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the first receiving module 905 is further configured to receive a PUSCH of a 1 millisecond TTI sent by the terminal device;
  • the first determining module 902 is further configured to determine a frequency offset value of the terminal device according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device.
  • the first determining module 902 is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the base station in the embodiment of the present invention can also implement the process implemented by the base station side in the embodiment shown in FIG. 5 of the present invention.
  • the first sending module 903 is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the at least to the terminal device within a preset time interval adjacent to the terminal device sending the channel sounding reference signal SRS a second resource indication information, the second resource indication information is used to indicate 0.5 milliseconds
  • the uplink frequency domain resource of the PUSCH of the TTI includes: a moving speed of the terminal device, an average value of the MCS of the terminal device, an MCS variance of the terminal device, and a BLER of the PUSCH received by the terminal device, The number of HARQ retransmissions of the PUSCH of the terminal device, the error rate or number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, the number of MAC packets ARQ of the terminal device, and one of the QoS of the service corresponding to the terminal device Or multiple parameters reach a specified threshold;
  • the first receiving module 905 is further configured to receive a PUSCH of a 0.5 millisecond TTI sent by the terminal device, and receive an SRS sent by the terminal device, where the uplink frequency domain resource of the PUSCH and the uplink of the SRS sent by the 0.5 millisecond TTI
  • the frequency domain resource includes at least one of the same frequency domain resources, and the preset time interval is less than or equal to m*0.5 milliseconds, and m is a non-zero integer;
  • the eNodeB sends the DCI to the terminal device through the PDCCH or the EPDCCH, and indicates the uplink frequency domain resource of the PUSCH of the terminal device in the 0.5 millisecond TTI in the DCI.
  • the uplink frequency domain resource of the PUSCH of the terminal device in the 0.5 millisecond TTI needs to satisfy the same frequency domain resource as the SRS sent by the terminal device.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the eNodeB can learn to send the PUSCH to the terminal device in a preset time interval before or after the SRS is sent, because the eNodeB can learn the transmission time of the periodic or non-periodic SRS (Sounding Reference Signal) of the terminal device.
  • the uplink frequency resource that transmits the SRS by the terminal device and the uplink frequency resource of the scheduled PUSCH of the terminal device have the same frequency resource, thereby determining the frequency offset value of the terminal device.
  • the first determining module 902 is further configured to: according to the SRS and the DM-RS in the PUSCH of the 0.5 millisecond TTI, or the DM-RS and the SRS on the same frequency domain resource in the PUSCH according to the SRS and the 0.5 millisecond TTI, Determining a frequency offset value of the terminal device;
  • the uplink frequency domain resource of the SRS sent by the eNodeB and the phase difference of the DM-RS in the PUSCH transmitted by the terminal device in the 0.5 millisecond TTI determine the frequency offset value; or the uplink frequency of the SRS sent by the eNodeB at the terminal device
  • the domain resource and the phase difference of the DM-RS on the same PRB index or the same RBG index of the terminal device in the 0.5 millisecond TTI determine the frequency offset value.
  • the uplink frequency domain resource of the SRS includes all code subsequences of one SRS; the terminal equipment transmits a code subsequence including all DM-RSs in the PUSCH in a 0.5 millisecond TTI, and the terminal device can according to the phase difference frequency of the two code subsequences. Offset value.
  • the code subsequence of the DM-RS on the same PRB index of the PUSCH and the SRS or the DM-RS of the same RBG index may not be the code subsequence of all the DM-RSs, that is, only the DM-RS on the PUSCH. Partial code subsequence.
  • the code subsequence of the SRS that transmits the same PRB index of the PUSCH and the SRS or the SRS of the same RBG index in the 0.5 ms TTI may not be the code subsequence of all SRSs, that is, only the partial code subsequence of the SRS on the PUSCH.
  • the terminal device may be the SRS code subsequence or the partial SRS code subsequence according to the SRS code subsequence and the DM-RS code subsequence phase difference frequency offset value, and the DM-RS code subsequence may be All of the above DM-RS code subsequences may also be part of the DM-RS code subsequence.
  • the code subsequence can be any sequence of numbers and is not limited herein. Exemplary are, for example, ZC (Zadoff-Chu) sequences.
  • the first determining module 902 is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the implementation may be extended: if the base station receives the PUSCH of the 0.5 millisecond TTI transmitted by the terminal device, and the time interval of the SRS sent by the base station to the terminal device is greater than m*0.5 milliseconds, and m is a non-zero integer, then the base station The module flow step will not be performed by the first determination module 902, ie, the frequency offset value of the terminal device will not be determined or updated.
  • the base station in the embodiment of the present invention can also implement the process implemented by the base station side in the embodiment shown in FIG. 6 of the present invention.
  • the first sending module 903 is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the random access procedure indication information to the terminal device by using the physical downlink control channel PDCCH; where, detecting that the terminal device reaches The first evaluation threshold includes: the moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER of the PUSCH received by the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, and the MAC packet of the terminal device/ The error rate or number of errors of the RLC packet/TCP packet/IP packet, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the first receiving module 905 is further configured to receive an uplink channel in a random access procedure that is sent by the terminal device according to the random access procedure indication information;
  • the first determining module 902 is further configured to determine, according to the DM-RS and/or the pre-preamble sequence in the uplink channel in the random access procedure sent by the terminal device, the frequency of the terminal device.
  • Rate offset value wherein the uplink channel comprises: a physical random access channel PRACH and/or a PUSCH;
  • the first determining module 902 is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the PRACH and/or the PUSCH sent after the terminal device triggers the random access procedure performs uplink information transmission of 1 millisecond TTI.
  • the eNodeB determines the frequency offset value by transmitting the Preamble sequence offset of the PRACH or the phase difference of the two DM-RSs of the PUSCH by the terminal device.
  • the base station determines the uplink frequency offset value of the terminal device according to the offset condition of the Preamble sequence in the random access procedure.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the base station in the embodiment of the present invention can also implement the flow implemented by the base station side in the embodiment shown in FIG. 7 of the present invention.
  • the first receiving module 905 is further configured to receive an uplink channel in a random access procedure that is sent by the terminal device after detecting that the second evaluation threshold is reached, where the uplink channel includes: PRACH and/or PUSCH;
  • the second evaluation threshold includes: a moving speed of the terminal device, a difference between the MCS index received by the terminal device and the expected value of the MCS index, and one or more of a difference between the MCS index received by the terminal device and the MCS index corresponding to the CQI reported by the terminal device.
  • the first determining module 902 is further configured to determine, according to an uplink channel in the random access procedure that is triggered by the terminal device after detecting that the second evaluation threshold is reached, the frequency offset value of the terminal device, where the uplink channel is Including: PRACH and / or PUSCH;
  • the first determining module 902 is further configured to determine a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the base station in the embodiment of the present invention can also implement the process implemented by the base station side in the embodiment shown in FIG. 8 of the present invention.
  • the MCS index is rolled back according to the preset MCS index rollback index, and the MCS index after the rollback is indicated to the terminal device, and the historical frequency offset is recorded.
  • the shift value performs frequency offset estimation on the terminal device, and after the frequency offset estimation, the demodulation terminal device transmits the PUSCH according to the back-off MCS index.
  • the frequency calibration is performed by the pre-recorded historical frequency offset value, and the frequency offset value is not required to be determined by adding the DM-RS symbol in the 0.5 millisecond TTI in the prior art, thereby reducing resource occupation and improving data transmission efficiency. And reduce the overhead of the reference signal.
  • the base station determines a historical frequency offset value of the terminal device based on the two DM-RSs that send the PUSCH in the two 0.5 millisecond TTIs received; or indicates that the terminal device is in the PUSCH of 1 millisecond TTI, and the base station is based on the received
  • the two DM-RSs of the PUSCH of the 1 millisecond TTI determine the historical frequency offset value of the terminal device; or, the terminal device is instructed to transmit the PUSCH and transmit the SRS in the 0.5 millisecond TTI, and the base station is based on the received DM- of the PUSCH of the 0.5 millisecond TTI.
  • RS and SRS determining a historical frequency offset value of the terminal device; or indicating that the terminal device sends an uplink channel in a random access procedure, and the base station is based on the received DM in the uplink channel in the random access procedure sent by the terminal device -RS, determining a historical frequency offset value of the terminal device, or triggering an uplink channel in the process of transmitting the random access when the terminal device itself reaches the second evaluation threshold
  • the base station determines a historical frequency offset value of the terminal device based on the uplink channel in the random access procedure sent by the terminal device.
  • the base station determines the historical frequency offset value by using the foregoing various manners, and does not need to determine the frequency offset value by adding the DM-RS symbol in the 0.5 millisecond TTI in the existing manner, thereby reducing resource occupation and improving data transmission efficiency. Reduces the overhead of the reference signal.
  • An embodiment of the present invention provides a terminal device, as shown in FIG.
  • the terminal device includes:
  • the second receiving module 1001 is configured to receive the second modulation coding method MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is The channel quality of the terminal device and/or the physical uplink shared channel PUSCH receiving target block error rate BLER of the terminal device is selected;
  • the second sending module 1002 is configured to send uplink information according to the second MCS index.
  • the uplink information may include: a reference signal, a sounding signal, and a physical channel.
  • the terminal device in this embodiment can implement the process in the embodiment shown in FIG. 2 of the present invention.
  • the second receiving module 1001 is further configured to receive at least one first resource indication information, where the first resource indication information is used to indicate uplink frequency domain resources of two 0.5 millisecond TTI PUSCHs; wherein, two 0.5 millisecond TTIs
  • the uplink frequency domain resource for transmitting the PUSCH includes at least one identical physical resource block PRB index or at least one identical resource block group RBG index, and the interval of two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is non-zero.
  • the second sending module 1002 is further configured to send the PUSCH in two 0.5 millisecond TTIs according to the first resource indication information.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 4 according to the present invention.
  • the device further includes: a transformation module 1003,
  • the second receiving module 1001 is further configured to receive mode indication information, where the mode indication information is used to indicate that the terminal device transitions from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI.
  • the mode of the terminal device changing from the mode of transmitting the uplink information of the 0.5 millisecond TTI to the mode of transmitting the uplink information of the 1 millisecond TTI according to the mode indication information may be immediately after the mode indication information is received, and the uplink is sent to the uplink of the 1 millisecond TTI.
  • the mode of the information may also be a mode in which the uplink information of the 1 millisecond TTI is transmitted after X time slots, where X is a positive integer greater than or equal to 6.
  • the transition module 1003 is configured to switch from a mode for transmitting uplink information of 0.5 milliseconds TTI to a mode for transmitting uplink information of 1 millisecond TTI according to mode indication information;
  • the second sending module 1002 is further configured to send a PUSCH of 1 millisecond TTI.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 5 according to the present invention.
  • the second receiving module 1001 is further configured to receive at least one second resource indication information, where the second resource indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI;
  • the second sending module 1002 is further configured to send the PUSCH and send the SRS in a 0.5 millisecond TTI according to the second resource indication information.
  • the uplink frequency domain resource of the PUSCH and the uplink frequency domain resource where the SRS is located in the 0.5 ms TTI includes at least one same PRB index or at least one identical RBG index, and the preset time interval is less than or equal to m*0.5 milliseconds, m Is a non-zero integer;
  • m is a negative integer, it means that the PUSCH is sent before the symbol of the SRS. If m is a positive integer, it means that the PUSCH is sent after the symbol of the SRS.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 6 of the present invention.
  • the second receiving module 1001 is further configured to receive the random access procedure indication information that is sent by using the PDCCH;
  • the second sending module 1002 is further configured to send, according to the random access procedure indication information, an uplink channel in a random access procedure, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the PRACH and/or the PUSCH are sent after the terminal device triggers the random access procedure, and the uplink information transmission of the 1 millisecond TTI is performed.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 7 of the present invention.
  • the device further includes: a detecting module 1004,
  • the detecting module 1004 is configured to detect whether the second evaluation threshold is reached.
  • the second evaluation threshold includes: a moving speed of the terminal device, an MCS index received by the terminal device, and an MCS index expectation. The difference between the values, one or more of the difference between the MCS index received by the terminal device and the MCS index corresponding to the CQI reported by the terminal device reaches a specified threshold;
  • the second sending module 1002 is further configured to: when it detects that the second evaluation threshold is reached, send an uplink channel in the random access process, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the PRACH and/or the PUSCH sent after the terminal device triggers the random access procedure performs uplink information transmission of 1 millisecond TTI.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the terminal device in this embodiment can also implement the process implemented on the terminal device side in the embodiment shown in FIG. 8 according to the present invention.
  • the terminal device sends the uplink information according to the reduced MCS index, so that the rate at which the terminal device sends the uplink information to the base station is reduced, and the uplink is improved when the base station uses the historical frequency offset value to perform inaccurate frequency calibration.
  • the reliability of the information thereby improving the accuracy of the uplink information sent by the terminal device.
  • An embodiment of the present invention provides a base station, as shown in FIG.
  • the base station includes: a processor 1101, a transmitter 1102, and a receiver 1103;
  • the processor 1101 is configured to: according to the channel quality of the terminal device, and/or the physical uplink shared channel PUSCH of the terminal device, receive the target block error rate BLER, select the first modulation and coding method MCS index for the terminal device; and return the value according to the MCS index and the first An MCS index is used to determine a second MCS index after the rollback, where the MCS index backoff value is used to perform a reduction process on the first MCS index to obtain a second MCS index; and the terminal is based on the historical frequency offset value of the terminal device.
  • the frequency of the device is subjected to frequency offset calibration, and the historical frequency offset value is a frequency offset value of the terminal device stored by itself; the PUSCH is demodulated according to the frequency after the frequency offset calibration;
  • the transmitter 1102 is configured to send the second MCS index to the terminal device.
  • the receiver 1103 is configured to receive uplink information that is sent by the terminal device according to the second MCS index.
  • the uplink information may include: a reference signal, a sounding signal, and a physical channel.
  • the uplink information of the terminal device is not subjected to real-time frequency offset. It is estimated that the terminal device may be affected by factors such as the current moving speed and the channel quality, so that the eNodeB performs frequency offset calibration on the frequency of the terminal device according to the historical frequency offset value of the pre-recorded terminal device, thereby causing demodulation.
  • the PUSCH of the terminal device is not accurate.
  • an MCS index backoff value is set in advance in the eNodeB, and the MCS index determined according to the channel quality of the terminal device and/or the PUSCH received by the terminal of the PUSCH of the terminal device is indexed by the MCS index backoff value.
  • the manner of sending the second MCS index to the terminal device may include, but is not limited to, a PDCCH or an EPDCCH.
  • the MCS index determined by the base station according to the channel quality of the terminal device may include, but is not limited to, an MCS index determined by the base station according to the CQI reported by the terminal device, or an MCS index determined by the base station according to the RSRP reported by the terminal device, or the base station according to the The terminal device reports the MCS index determined by the RSRQ, and the base station determines the MCS index determined by the terminal device to report the MCS index determined by the SRS, or the base station determines other MCS indexes that can be used to determine the channel quality of the terminal device, which is not limited herein.
  • the base station in this embodiment can implement the process in the embodiment shown in FIG. 1 of the present invention.
  • the processor 1101 is further configured to: after the terminal device performs the uplink information transmission of the 1 millisecond TTI, determine the frequency offset value of the terminal device according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device; The frequency offset value of the terminal device determines the historical frequency offset value of the terminal device.
  • the base station in this embodiment may also implement the process in the embodiment shown in FIG. 3 of the present invention.
  • the manner in which the base station determines the historical frequency offset value of the terminal device may include, but is not limited to, the base station calculates a frequency offset value by using a phase difference between the two DM-RSs, and stores or replaces the frequency offset offset value with the terminal device.
  • the historical frequency offset value may include, but is not limited to, the base station calculates a frequency offset value by using a phase difference between the two DM-RSs, and stores or replaces the frequency offset offset value with the terminal device.
  • the transmitter 1102 is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the at least one first resource indication information to the terminal device, where the first resource indication information is used to indicate two 0.5 millisecond TTIs.
  • the receiver 1103 is further configured to receive the two 0.5 millisecond TTI PUSCHs sent by the terminal device, where the uplink frequency domain resources of the two 0.5 millisecond TTI PUSCHs include at least one same physical resource block PRB index or Having at least one identical resource block group RBG index, the time interval of two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is a non-zero positive integer;
  • the processor 1101 is further configured to use two DM-RSs in the PUSCH according to two 0.5 millisecond TTIs, or on the frequency domain according to the same PRB index or the same RBG index in the PUSCH of two 0.5 millisecond TTIs.
  • the two DM-RSs determine the frequency offset value of the terminal device; and determine the historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the eNodeB may determine the frequency offset value according to the phase difference of the two DM-RSs in the PUSCH of the two 0.5 millisecond TTIs of the terminal device. Wherein, one DM-RS is included in the PUSCH of each 0.5 millisecond TTI; or the frequency offset value is determined according to the phase difference of two DM-RSs on the same PRB index or the frequency of the RBG index of two 0.5 millisecond TTIs .
  • the two DM-RSs in the frequency domain of the same PRB index or the same RBG index in the two PUMS TTIs may not be all code subsequences of the DM-RS, that is, only part of the DM-RS on the PUSCH. Code subsequence.
  • the terminal device may according to the same PRB index or the phase difference frequency offset value of the partial code subsequence of the two DM-RSs in the frequency domain of the same RBG index.
  • the code subsequence can be any sequence of numbers and is not limited herein. Exemplary are, for example, ZC (Zadoff-Chu) sequences.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the base station in this embodiment can also implement the process implemented by the base station side in the embodiment shown in FIG. 4 of the present invention.
  • the implementation is extensible: if the base station receives two 0.5 millisecond TTIs sent by the terminal device with a time interval greater than n*0.5 milliseconds, and n is a non-zero positive integer, the processor will not perform the determination or update. The step of the frequency offset value of the terminal device.
  • the transmitter 1102 is further configured to: when detecting that the terminal device reaches the first evaluation threshold, Sending mode indication information to the terminal device; the mode indication information is used to indicate that the terminal device transitions from a mode of transmitting uplink information of 0.5 milliseconds TTI to a mode of transmitting uplink information of 1 millisecond TTI; wherein, detecting that the terminal device reaches the first evaluation threshold Including: the moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER of the PUSCH received by the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, and the MAC packet/RLC packet/TCP packet of the terminal device The error rate or the number of errors of the /IP packet, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the receiver 1103 is further configured to receive a PUSCH of a 1 millisecond TTI sent by the terminal device;
  • the processor 1101 is further configured to determine, according to the DM-RS in the PUSCH of the 1 millisecond TTI sent by the terminal device, a frequency offset value of the terminal device, and determine a historical frequency of the terminal device according to the frequency offset value of the terminal device. Offset value.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the base station in this embodiment can also implement the process implemented by the base station side in the embodiment shown in FIG. 5 of the present invention.
  • the transmitter 1102 is further configured to, after detecting that the terminal device reaches the first evaluation threshold, send at least one to the terminal device within a preset time interval adjacent to the terminal device sending the channel sounding reference signal SRS.
  • the second resource indication information is used to indicate the uplink frequency domain resource of the PUSCH of the 0.5 millisecond TTI; wherein, detecting that the terminal device reaches the first evaluation threshold includes: the moving speed of the terminal device, and the mean value of the MCS of the terminal device , the MCS variance of the terminal device, the BLER of the PUSCH received by the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, the error rate or the number of errors of the MAC packet/RLC packet/TCP packet/IP packet of the terminal device, and the MAC address of the terminal device
  • the number of packets of the ARQ, one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the receiver 1103 is further configured to receive a PUSCH of a 0.5 millisecond TTI sent by the terminal device, and receive an SRS sent by the terminal device, where the uplink frequency domain resource of the PUSCH and the uplink frequency domain where the SRS are sent by the 0.5 millisecond TTI
  • the resource includes at least one of the same frequency domain resources, the preset time interval is less than or equal to m*0.5 milliseconds, and m is a non-zero integer;
  • the processor 1101 is further configured to: use the DM-RS in the PUSCH according to the SRS and the 0.5 millisecond TTI, or the DM-RS on the same frequency domain resource in the PUSCH according to the SRS and the 0.5 millisecond TTI. And the SRS, determining a frequency offset value of the terminal device; determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the eNodeB sends the DCI to the terminal device through the PDCCH or the EPDCCH, and indicates the uplink frequency domain resource of the PUSCH of the terminal device in the 0.5 millisecond TTI in the DCI.
  • the uplink frequency domain resource of the PUSCH of the terminal device in the 0.5 millisecond TTI needs to satisfy the same frequency domain resource as the SRS sent by the terminal device.
  • the eNodeB can learn to send the PUSCH to the terminal device in a preset time interval before or after the SRS is sent, so that the terminal device can send the SRS uplink through the terminal device.
  • the frequency resource and the uplink frequency resource of the terminal device scheduled by the PUSCH have the same frequency resource, thereby determining the frequency offset value of the terminal device.
  • the uplink frequency domain resource of the SRS sent by the eNodeB and the phase difference of the DM-RS in the PUSCH transmitted by the terminal device in the 0.5 millisecond TTI determine the frequency offset value; or the uplink frequency of the SRS sent by the eNodeB at the terminal device
  • the domain resource and the phase difference of the DM-RS on the same PRB index or the same RBG index of the terminal device in the 0.5 millisecond TTI determine the frequency offset value.
  • the uplink frequency domain resource of the SRS includes all code subsequences of one SRS; the terminal equipment transmits a code subsequence including all DM-RSs in the PUSCH in a 0.5 millisecond TTI, and the terminal device can according to the phase difference frequency of the two code subsequences. Offset value.
  • the code subsequence of the DM-RS on the same PRB index of the PUSCH and the SRS or the DM-RS of the same RBG index may not be the code subsequence of all the DM-RSs, that is, only the DM-RS on the PUSCH. Partial code subsequence.
  • the code subsequence of the SRS that transmits the same PRB index of the PUSCH and the SRS or the SRS of the same RBG index in the 0.5 ms TTI may not be the code subsequence of all SRSs, that is, only the partial code subsequence of the SRS on the PUSCH.
  • the terminal device may be the SRS code subsequence or the partial SRS code subsequence according to the SRS code subsequence and the DM-RS code subsequence phase difference frequency offset value, and the DM-RS code subsequence may be All of the above DM-RS code subsequences may also be part of the DM-RS code subsequence.
  • the code subsequence can be any sequence of numbers and is not limited herein. Exemplary are, for example, ZC (Zadoff-Chu) sequences.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the base station in this embodiment can also implement the process implemented by the base station side in the embodiment shown in FIG. 6 of the present invention.
  • the transmitter 1102 is further configured to: after detecting that the terminal device reaches the first evaluation threshold, send the random access procedure indication information to the terminal device by using the physical downlink control channel PDCCH; where, detecting that the terminal device reaches the first An evaluation threshold includes: the moving speed of the terminal device, the mean value of the MCS change of the terminal device, the MCS variance of the terminal device, the BLER of the PUSCH received by the terminal device, the number of HARQ retransmissions of the PUSCH of the terminal device, and the MAC packet/RLC packet of the terminal device.
  • the error rate or the number of errors of the /TCP packet/IP packet, the number of MAC packets ARQ of the terminal device, and one or more parameters of the QoS of the service corresponding to the terminal device reach a specified threshold;
  • the receiver 1103 is further configured to receive an uplink channel in a random access procedure that is sent by the terminal device according to the random access procedure indication information;
  • the processor 1101 is further configured to determine a frequency offset value of the terminal device according to a DM-RS and/or a preamble sequence in an uplink channel in a random access procedure sent by the terminal device, where
  • the uplink channel includes: a physical random access channel PRACH and/or a PUSCH; and determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the PRACH and/or the PUSCH sent after the terminal device triggers the random access procedure performs uplink information transmission of 1 millisecond TTI.
  • the eNodeB determines the frequency offset value by transmitting the Preamble sequence offset of the PRACH or the phase difference of the two DM-RSs of the PUSCH by the terminal device.
  • the base station determines the uplink frequency offset value of the terminal device according to the offset condition of the Preamble sequence in the random access procedure.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the base station in the embodiment of the present invention can also implement the process implemented by the base station side in the embodiment shown in FIG. 7 of the present invention.
  • the receiver 1103 is further configured to receive, by the terminal device, an uplink channel in a random access procedure that is sent after the terminal device detects that the second evaluation threshold is reached, where the uplink channel includes: PRACH and/or PUSCH;
  • the threshold includes: the moving speed of the terminal device, and the MCS cable received by the terminal device One or more of the difference between the MCS index received by the terminal device and the MCS index corresponding to the CQI reported by the terminal device reaches a specified threshold;
  • the processor 1101 is further configured to determine a frequency offset value of the terminal device according to the uplink channel in the random access process that is triggered by the terminal device after detecting that the second evaluation threshold is reached, where the uplink channel includes: PRACH and/or PUSCH; determining a historical frequency offset value of the terminal device according to the frequency offset value of the terminal device.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the base station in this embodiment can also implement the process implemented by the base station side in the embodiment shown in FIG. 8 of the present invention.
  • the MCS index is rolled back according to the preset MCS index rollback index, and the MCS index after the rollback is indicated to the terminal device, and the historical frequency offset is recorded.
  • the shift value performs frequency offset estimation on the terminal device, and after the frequency offset estimation, the demodulation terminal device transmits the PUSCH according to the back-off MCS index.
  • the frequency calibration is performed by the pre-recorded historical frequency offset value, and the frequency offset value is not required to be determined by adding the DM-RS symbol in the 0.5 millisecond TTI in the prior art, thereby reducing resource occupation and improving data transmission efficiency. And reduce the overhead of the reference signal.
  • the base station determines a historical frequency offset value of the terminal device based on the two DM-RSs that send the PUSCH in the two 0.5 millisecond TTIs received; or indicates that the terminal device is in the PUSCH of 1 millisecond TTI, and the base station is based on the received
  • the two DM-RSs of the PUSCH of the 1 millisecond TTI determine the historical frequency offset value of the terminal device; or, the terminal device is instructed to transmit the PUSCH and transmit the SRS in the 0.5 millisecond TTI, and the base station is based on the received DM- of the PUSCH of the 0.5 millisecond TTI.
  • RS and SRS determining a historical frequency offset value of the terminal device; or indicating that the terminal device sends an uplink channel in a random access procedure, and the base station is based on the received DM in the uplink channel in the random access procedure sent by the terminal device -RS, determining a historical frequency offset value of the terminal device, or triggering an uplink channel in the process of transmitting the random access when the terminal device itself reaches the second evaluation threshold
  • the base station determines the terminal device based on the uplink channel in the random access process sent by the terminal device. Historical frequency offset value.
  • the base station determines the historical frequency offset value by using the foregoing various manners, and does not need to determine the frequency offset value by adding the DM-RS symbol in the 0.5 millisecond TTI in the existing manner, thereby reducing resource occupation and improving data transmission efficiency. Reduces the overhead of the reference signal.
  • An embodiment of the present invention provides a terminal device, as shown in FIG.
  • the terminal device includes: a transmitter 1201, a receiver 1202;
  • the receiver 1202 is configured to receive a second modulation coding method MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is a base station according to the terminal device.
  • MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is a base station according to the terminal device.
  • the transmitter 1201 is configured to send uplink information according to the second MCS index.
  • the uplink information may include: a reference signal, a sounding signal, and a physical channel.
  • the terminal device in this embodiment can implement the process in the embodiment shown in FIG. 2 of the present invention.
  • the receiver 1202 is further configured to receive at least one first resource indication information, where the first resource indication information is used to indicate uplink frequency domain resources of two 0.5 millisecond TTI PUSCHs, where two 0.5 millisecond TTIs send PUSCH
  • the uplink frequency domain resource includes at least one identical physical resource block PRB index or includes at least one identical resource block group RBG index, and the interval of two 0.5 millisecond TTIs is less than or equal to n*0.5 milliseconds, and n is non-zero positive.
  • the transmitter 1201 is further configured to send the PUSCH in two 0.5 millisecond TTIs according to the first resource indication information.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 4 of the present invention.
  • the terminal device further includes: a processor 1203,
  • the receiver 1202 is further configured to receive mode indication information, where the mode indication information is used to indicate a mode of transitioning from a mode of transmitting uplink information of 0.5 milliseconds TTI to transmitting uplink information of 1 millisecond TTI.
  • mode indication information is used to indicate a mode of transitioning from a mode of transmitting uplink information of 0.5 milliseconds TTI to transmitting uplink information of 1 millisecond TTI.
  • the processor 1203 is configured to transition from a mode for transmitting uplink information of 0.5 milliseconds TTI to a mode for transmitting uplink information of 1 millisecond TTI according to mode indication information.
  • the mode of the terminal device changing from the mode of transmitting the uplink information of the 0.5 millisecond TTI to the mode of transmitting the uplink information of the 1 millisecond TTI according to the mode indication information may be immediately after the mode indication information is received, and the uplink is sent to the uplink of the 1 millisecond TTI.
  • the mode of the information may also be a mode in which the uplink information of the 1 millisecond TTI is transmitted after X time slots, where X is a positive integer greater than or equal to 6.
  • the transmitter 1201 is further configured to send a PUSCH of 1 millisecond TTI.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 5 of the present invention.
  • the receiver 1202 is further configured to receive at least one second resource indication information, where the second resource indication information is used to indicate an uplink frequency domain resource of a PUSCH of a 0.5 millisecond TTI;
  • the transmitter 1201 is further configured to send the PUSCH and send the SRS in a 0.5 millisecond TTI according to the second resource indication information.
  • the uplink frequency domain resource of the PUSCH and the uplink frequency domain resource where the SRS is located in the 0.5 ms TTI includes at least one same PRB index or at least one identical RBG index, and the preset time interval is less than or equal to m*0.5 milliseconds, m Is a non-zero integer;
  • m is a negative integer, it means that the PUSCH is sent before the symbol of the SRS. If m is a positive integer, it means that the PUSCH is sent after the symbol of the SRS.
  • the PUSCH is a physical channel used to carry uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 6 of the present invention.
  • the receiver 1202 is further configured to receive random access procedure indication information that is sent by using a PDCCH;
  • the transmitter 1201 is further configured to send, according to the random access procedure indication information, an uplink channel in a random access procedure, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the PRACH and/or the PUSCH are sent after the terminal device triggers the random access procedure, and the uplink information transmission of the 1 millisecond TTI is performed.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 7 of the present invention.
  • the terminal device further includes: a processor 1203,
  • the processor 1203 is configured to detect whether the second evaluation threshold is reached.
  • the second evaluation threshold includes: a moving speed, a difference between the received MCS index and an expected value of the MCS index, and an MCS index received by the terminal device.
  • the terminal device reports one or more of the differences of the MCS indexes corresponding to the CQI to reach a specified threshold;
  • the transmitter 1201 is further configured to: when it detects that the second evaluation threshold is reached, send an uplink channel in the random access procedure, where the uplink channel includes: a PRACH and/or a PUSCH.
  • the PRACH and/or the PUSCH sent after the terminal device triggers the random access procedure performs uplink information transmission of 1 millisecond TTI.
  • the PUSCH is a physical channel used to carry the uplink data of the terminal device, and may also be used to transmit the UCI of the terminal device;
  • the PRACH is used for the terminal to initiate communication with the base station, and the terminal randomly accesses The preamble information is sent, and the base station receives and determines the identity of the access terminal through the PRACH and calculates the delay of the terminal.
  • the terminal device in this embodiment can also implement the process implemented by the terminal device side in the embodiment shown in FIG. 8 of the present invention.
  • the terminal device sends the uplink information according to the reduced MCS index, so that the rate at which the terminal device sends the uplink information to the base station is reduced, and the uplink is improved when the base station uses the historical frequency offset value to perform inaccurate frequency calibration.
  • the reliability of the information thereby improving the accuracy of the uplink information sent by the terminal device.
  • the embodiment of the invention provides a system for demodulating uplink information, as shown in FIG.
  • the system includes: a base station 1301 and a terminal device 1302,
  • the base station 1301 includes:
  • a selecting module configured to receive a BLER according to a channel quality of the terminal device and/or a PUSCH of the terminal device, and select a first MCS index for the terminal device;
  • a first determining module configured to determine a second MCS index according to the MCS index backoff value and the first MCS index, where the MCS index backoff value is used to perform a reduction process on the first MCS index to obtain a second MCS index;
  • a first sending module configured to send the second MCS index to the terminal device
  • a calibration module configured to perform frequency offset calibration on a frequency of the terminal device according to a historical frequency offset value of the terminal device, where the historical frequency offset value is a frequency offset value of the stored terminal device;
  • a first receiving module configured to receive uplink information sent by the terminal device according to the second MCS index, and demodulate the PUSCH according to the frequency after the frequency offset calibration
  • the terminal device 1302 includes:
  • a second receiving module configured to receive a second MCS index, where the second MCS index is obtained by the base station performing a reduction process on the first MCS index according to the MCS index backoff value, where the first MCS index is a channel of the base station according to the terminal device The quality and/or the PUSCH reception target block error rate BLER of the terminal device is selected;
  • the second sending module is configured to send uplink information according to the second MCS index.
  • the system in the embodiment of the present invention can implement the flow implemented by the base station and the terminal device side in the embodiment shown in FIG. 1 and FIG. 2 of the present invention.
  • system in the embodiment of the present invention may further implement a process of determining a frequency offset value of the terminal device implemented by the base station and the terminal device side in the embodiment shown in FIG. 3 to FIG. 8 .
  • the MCS index is reduced according to the preset MCS index rollback index, and the reduced MCS index is indicated to the terminal device, and the historical frequency offset is recorded.
  • the shift value performs frequency offset estimation on the terminal device, and after the frequency offset estimation, the demodulation terminal device transmits the PUSCH according to the reduced MCS index.
  • the terminal device sends the uplink information according to the reduced MCS index, so that the rate at which the terminal device sends the uplink information to the base station is reduced, and the historical frequency offset is facilitated in the base station.
  • the reliability of the uplink information is improved, thereby improving the accuracy of the uplink information sent by the terminal device.
  • the storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明实施例提供了一种解调上行信息的方法，装置及系统，涉及通信技术领域。通过为终端设备选取MCS索引后，根据预设的MCS索引回退指数对MCS索引进行回退处理，并将回退后的MCS索引指示给终端设备，并通过记录的历史频率偏移值对终端设备进行频率偏移估计，并在频率偏移估计之后解调终端设备根据回退后的MCS索引发送PUSCH。通过预先记录的历史频率偏移值确定频率偏移值，无需如现有方式中在0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了资源的占用，提高了数据传输效率并降低了参考信号的系统开销。

Description

解调上行信息的方法，装置及系统 技术领域
本发明涉及通信技术领域，特别涉及一种解调上行信息的方法，装置及系统。
背景技术
在LTE(Long Term Evolution，长期演进)系统中，接收信号的正交性依赖于发射机和接收机工作于完全相同的频率参考点，若不完全相同则子载波的正交性就会遭到破坏引起子载波泄露。为了避免子载波泄露，基站需要对终端设备进行频率偏移估计，并使用估计出来的频率偏移值对该终端设备进行校准。
当前LTE系统的TTI(Transmission Time Interval，传输时间间隔)为1毫秒。当前LTE系统的上行链路中，PUSCH(Physical uplink Shared Channel，物理上行共享信道)上，每个1ms TTI中有两个SC-FDMA(Single Carrier Frequency Division Multiple Access，单载波频分多址)符号上发送DM-RS(DeModulation RS，解调参考信号)用于基站测量估计上行信道，并且基站会根据这两个DM-RS符号的相位差对终端设备发送的PUSCH进行频率偏移估计和频率校准。
为了实现更短的往返时间和更短的数据传输时延，目前LTE系统演进方案已经提出了将TTI长度设置成0.5毫秒或更短的场景。相应的，当LTE系统的TTI长度由1毫秒变为0.5毫秒后，根据现有技术中的信号结构，用于估计上行频率的DM-RS仅在一个符号上发送了，这样基站无法通过一个符号上的DM-RS来对终端设备的进行准确的上行频率偏移估计和校准。
为了解决0.5毫秒TTI解调上行信息的问题，最直观的解决方案就是在0.5毫秒TTI中再增加一列DM-RS符号，基站就可以利用这两个DM-RS符号上的DM-RS来进行准确的上行频率偏移估计
然而，由于在0.5毫秒TTI中增加了一列DM-RS符号，因此，这额外的参考信号开销会导致在该0.5毫秒TTI中可以传输数据的容量变小这种方式降 低了数据传输的效率，提高了参考信号的系统开销。
发明内容
为了解决现有技术的缺陷，本发明实施例提供了一种解调上行信息的方法，装置及系统。所述技术方案如下：
第一方面，本发明实施例提供的一种解调上行信息的方法，包括：
基站根据终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为所述终端设备选取第一调制编码方法MCS索引；
所述基站根据MCS索引回退值和所述第一MCS索引，确定第二MCS索引，其中，所述MCS索引回退值用于对所述第一MCS索引进行减小处理从而得到所述第二MCS索引；
所述基站将所述第二MCS索引发送给所述终端设备；
所述基站根据所述终端设备的历史频率偏移值对所述终端设备的频率进行频率偏移校准，其中，所述历史频率偏移值为所述基站存储的所述终端设备的频率偏移值；
所述基站接收所述终端设备根据所述第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH。
在第一方面的第一种可能的实现方式中，所述方法还包括：
当所述终端设备进行1毫秒TTI的上行信息传输后，所述基站根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定所述终端设备的频率偏移值；
所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第一方面的第二种可能的实现方式中，所述方法还包括：
当所述基站检测到所述终端设备达到了第一评估门限后，向所述终端设备发送至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述基站检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的混合自动重传请求HARQ重传次数，所述终端设备的 媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的错误率或错误次数，所述终端设备的MAC包自动重传请求ARQ次数，所述终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
所述基站接收所述终端设备发送的所述两个0.5毫秒TTI的PUSCH；其中，所述两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
所述基站根据所述两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据所述两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定所述终端设备的频率偏移值；
所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第一方面的第三种可能的实现方式中，所述方法还包括：
当所述基站检测到所述终端设备达到了第一评估门限后，向所述终端设备发送模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
其中，所述基站检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述基站接收所述终端设备发送的1毫秒TTI的PUSCH；
所述基站根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定所述终端设备的频率偏移值；
所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第一方面的第四种可能的实现方式中，所述方法还包括：
当所述基站检测到所述终端设备达到了第一评估门限后，在与所述终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向所述终端设备发送至 少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；其中，所述基站检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述基站接收所述终端设备发送的所述0.5毫秒TTI的PUSCH，以及所述基站接收所述终端设备发送的SRS；其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的频域资源，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
所述基站根据所述SRS以及所述0.5毫秒TTI的PUSCH中的DM-RS，或者根据所述SRS和所述0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定所述终端设备的频率偏移值；
所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第一方面的第五种可能的实现方式中，所述方法还包括：
当所述基站检测到所述终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向所述终端设备发送随机接入过程指示信息；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述基站接收所述终端设备根据所述随机接入过程指示信息发送的所述随机接入过程中的上行信道；
所述基站根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频率偏移值，其中所述上行信道包括：物理随机接入信道PRACH和/或PUSCH；
所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率 偏移值。
在第一方面的第六种可能的实现方式中，所述方法还包括：
所述基站接收所述终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH；所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
所述基站根据所述终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定所述终端设备的频率偏移值，其中所述上行信道包括：PRACH和/或PUSCH；
所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
第二方面，本发明实施例提供的一种解调上行信息的方法，包括：
终端设备接收第二调制编码方法MCS索引，其中，所述第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，所述第一MCS索引为所述基站根据所述终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
所述终端设备根据所述第二MCS索引发送上行信息。
在第二方面的第一种可能的实现方式中，所述方法还包括：
所述终端设备接收至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
所述终端设备根据所述第一资源指示信息在所述两个0.5毫秒TTI中发送PUSCH。
在第二方面的第二种可能的实现方式中，所述方法还包括：
所述终端设备接收模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
所述终端设备根据所述模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
所述终端设备发送1毫秒TTI的PUSCH。
在第二方面的第三种可能的实现方式中，所述方法还包括：
所述终端设备接收至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
所述终端设备根据所述第二资源指示信息在所述0.5毫秒TTI发送PUSCH以及发送SRS；
其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数。
在第二方面的第四种可能的实现方式中，所述方法还包括：
所述终端设备接收通过PDCCH发送的随机接入过程指示信息；
所述终端设备根据所述随机接入过程指示信息发送所述随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
在第二方面的第五种可能的实现方式中，所述方法还包括：
所述终端设备检测自身是否达到了第二评估门限；其中，所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
当所述终端设备检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
第三方面，本发明实施例提供的一种基站，包括：
选取模块，用于根据终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为所述终端设备选取第一调制编码方法MCS索引；
第一确定模块，用于根据MCS索引回退值和所述第一MCS索引，确定回退后的第二MCS索引，其中，所述MCS索引回退值用于对所述第一MCS索引进行减小处理从而得到所述第二MCS索引；
第一发送模块，用于将所述第二MCS索引发送给所述终端设备；
校准模块，用于根据所述终端设备的历史频率偏移值对所述终端设备的频率进行频率偏移校准，所述历史频率偏移值为存储的所述终端设备的频率偏移值；
第一接收模块，用于接收所述终端设备根据所述第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH。
在第三方面的第一种可能的实现方式中，所述装置还包括：
所述第一确定模块，还用于当所述终端设备进行1毫秒TTI的上行信息传输后，根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定所述终端设备的频率偏移值；
所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第三方面的第二种可能的实现方式中，所述装置还包括：
所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的混合自动重传请求HARQ重传次数，所述终端设备的媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的错误率或错误次数，所述终端设备的MAC包自动重传请求ARQ次数，所述终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
所述第一接收模块，还用于接收所述终端设备发送的所述两个0.5毫秒TTI的PUSCH；其中，所述两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
所述第一确定模块，还用于根据所述两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据所述两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定所述终端设备的频率偏移值；
所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终 端设备的历史频率偏移值。
在第三方面的第三种可能的实现方式中，所述装置还包括：
所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述第一接收模块，还用于接收所述终端设备发送的1毫秒TTI的PUSCH；
所述第一确定模块，还用于根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定所述终端设备的频率偏移值；
所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第三方面的第四种可能的实现方式中，所述装置还包括：
所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，在与所述终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向所述终端设备发送至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述第一接收模块，还用于接收所述终端设备发送的所述0.5毫秒TTI的PUSCH，以及接收所述终端设备发送的SRS；其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的 频域资源，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
所述第一确定模块，还用于根据所述SRS以及所述0.5毫秒TTI的PUSCH中的DM-RS，或者根据所述SRS和所述0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定所述终端设备的频率偏移值；
所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第三方面的第五种可能的实现方式中，所述装置还包括：
所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向所述终端设备发送随机接入过程指示信息；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述第一接收模块，还用于接收所述终端设备根据所述随机接入过程指示信息发送的所述随机接入过程中的上行信道；
所述第一确定模块，还用于根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频率偏移值，其中所述上行信道包括：物理随机接入信道PRACH和/或PUSCH；
所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第三方面的第六种可能的实现方式中，所述装置还包括：
所述第一接收模块，还用于接收所述终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH；所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
所述第一确定模块，还用于根据所述终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定所述终端设备的频率偏移 值，其中所述上行信道包括：PRACH和/或PUSCH；
所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
第四方面，本发明实施例提供的一种终端设备，包括：
第二接收模块，用于接收第二调制编码方法MCS索引，其中，所述第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，所述第一MCS索引为所述基站根据所述终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
第二发送模块，用于根据所述第二MCS索引发送上行信息。
在第四方面的第一种可能的实现方式中，所述装置还包括：
所述第二接收模块，还用于接收至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
所述第二发送模块，还用于根据所述第一资源指示信息在所述两个0.5毫秒TTI中发送PUSCH。
在第四方面的第二种可能的实现方式中，所述装置还包括：转变模块，
所述第二接收模块，还用于接收模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
所述转变模块，用于根据所述模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
所述第二发送模块，还用于发送1毫秒TTI的PUSCH。
在第四方面的第三种可能的实现方式中，所述装置还包括：
所述第二接收模块，还用于接收至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
所述第二发送模块，还用于根据所述第二资源指示信息在所述0.5毫秒TTI发送PUSCH以及发送SRS；
其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在 的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数。
在第四方面的第四种可能的实现方式中，所述装置还包括：
所述第二接收模块，还用于接收通过PDCCH发送的随机接入过程指示信息；
所述第二发送模块，还用于根据所述随机接入过程指示信息发送所述随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
在第四方面的第五种可能的实现方式中，所述装置还包括：检测模块，
所述检测模块，用于检测自身是否达到了第二评估门限；其中，所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
所述第二发送模块，还用于当检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
第五方面，本发明实施例提供的一种基站，所述基站包括：
处理器，发送器，接收器；
所述处理器，用于根据终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为所述终端设备选取第一调制编码方法MCS索引；根据MCS索引回退值和所述第一MCS索引，确定第二MCS索引，其中，所述MCS索引回退值用于对所述第一MCS索引进行减小处理从而得到所述第二MCS索引；根据所述终端设备的历史频率偏移值对所述终端设备的频率进行频率偏移校准，其中，所述历史频率偏移值为自身存储的所述终端设备的频率偏移值；根据频率偏移校准之后的频率解调PUSCH；
所述发送器，用于将所述第二MCS索引发送给所述终端设备；
所述接收器，用于接收所述终端设备根据所述第二MCS索引发送的上行信息。
在第五方面的第一种可能的实现方式中，所述处理器，还用于当所述终端设备进行1毫秒TTI的上行信息传输后，根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第五方面的第二种可能的实现方式中，所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的混合自动重传请求HARQ重传次数，所述终端设备的媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的错误率或错误次数，所述终端设备的MAC包自动重传请求ARQ次数，所述终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
所述接收器，还用于接收所述终端设备发送的所述两个0.5毫秒TTI的PUSCH；其中，所述两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
所述处理器，还用于根据所述两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据所述两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第五方面的第三种可能的实现方式中，所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述接收器，还用于接收所述终端设备发送的1毫秒TTI的PUSCH；
所述处理器，还用于根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值， 确定所述终端设备的历史频率偏移值。
在第五方面的第四种可能的实现方式中，所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，在与所述终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向所述终端设备发送至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述接收器，还用于接收所述终端设备发送的所述0.5毫秒TTI的PUSCH，以及接收所述终端设备发送的SRS；其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的频域资源，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
所述处理器，还用于根据所述SRS以及所述0.5毫秒TTI的PUSCH中的DM-RS，或者根据所述SRS和所述0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第五方面的第五种可能的实现方式中，所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向所述终端设备发送随机接入过程指示信息；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
所述接收器，还用于接收所述终端设备根据所述随机接入过程指示信息发送的所述随机接入过程中的上行信道；
所述处理器，还用于根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频率偏移值，其中 所述上行信道包括：物理随机接入信道PRACH和/或PUSCH；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
在第五方面的第六种可能的实现方式中，所述接收器，还用于接收所述终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH；所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
所述处理器，还用于根据所述终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定所述终端设备的频率偏移值，其中所述上行信道包括：PRACH和/或PUSCH；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
第六方面，本发明实施例提供的一种终端设备，所述终端设备包括：
发送器，接收器；
所述接收器，用于接收第二调制编码方法MCS索引，其中，所述第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，所述第一MCS索引为所述基站根据所述终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
所述发送器，用于根据所述第二MCS索引发送上行信息。
在第六方面的第一种可能的实现方式中，所述接收器，还用于接收至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
所述发送器，还用于根据所述第一资源指示信息在所述两个0.5毫秒TTI中发送PUSCH。
在第六方面的第二种可能的实现方式中，所述终端设备还包括：处理器，
所述接收器，还用于接收模式指示信息；所述模式指示信息用于指示从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
所述处理器，用于根据所述模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
所述发送器，还用于发送1毫秒TTI的PUSCH。
在第六方面的第三种可能的实现方式中，所述接收器，还用于接收至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
所述发送器，还用于根据所述第二资源指示信息在所述0.5毫秒TTI发送PUSCH以及发送SRS。
其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数。
在第六方面的第四种可能的实现方式中，所述接收器，还用于接收通过PDCCH发送的随机接入过程指示信息；
所述发送器，还用于根据所述随机接入过程指示信息发送所述随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
在第六方面的第五种可能的实现方式中，所述终端设备还包括：处理器，
所述处理器，用于检测自身是否达到了第二评估门限；其中，所述第二评估门限包括：的移动速度，接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
所述发送器，还用于当检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
第七方面，本发明实施例提供的一种解调上行信息的系统，所述系统包括：基站和终端设备，
所述基站包括：
选取模块，用于根据终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为所述终端设备选取第一调制编码方法MCS索引；
第一确定模块，用于根据MCS索引回退值和所述第一MCS索引，确定第二MCS索引，其中，所述MCS索引回退值用于对所述第一MCS索引进行减 小处理从而得到所述第二MCS索引；
第一发送模块，用于将所述第二MCS索引发送给所述终端设备；
校准模块，用于根据所述终端设备的历史频率偏移值对所述终端设备的频率进行频率偏移校准，其中，所述历史频率偏移值为存储的所述终端设备的频率偏移值；
第一接收模块，用于接收所述终端设备根据所述第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH；
所述终端设备包括：
第二接收模块，用于接收第二MCS索引，其中，所述第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，所述第一MCS索引为所述基站根据所述终端设备的信道质量和/或所述终端设备的PUSCH接收目标块差错率BLER选取的；
第二发送模块，用于根据所述第二MCS索引发送上行信息。
本发明实施例提供的技术方案通过为终端设备选取MCS索引后，根据预设的MCS索引回退指数对MCS索引进行回退处理，并将回退后的MCS索引指示给终端设备，并通过记录的历史频率偏移值对终端设备进行频率偏移估计，并在频率偏移估计之后解调终端设备根据回退后的MCS索引发送PUSCH。通过预先记录的历史频率偏移值确定频率偏移值，无需如现有方式中在0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例1提供的解调上行信息的方法流程图；
图2是本发明实施例2提供的解调上行信息的方法流程图；
图3是本发明实施例3提供的解调上行信息的方法流程图；
图4是本发明实施例3提供的解调上行信息的方法流程图；
图5是本发明实施例3提供的解调上行信息的方法流程图；
图6是本发明实施例3提供的解调上行信息的方法流程图；
图7是本发明实施例3提供的解调上行信息的方法流程图；
图8是本发明实施例3提供的解调上行信息的方法流程图；
图9是本发明实施例4提供的基站的结构示意图；
图10是本发明实施例5提供的终端设备的结构示意图；
图11是本发明实施例6提供的基站的结构示意图；
图12是本发明实施例7提供的终端设备的结构示意图；
图13是本发明实施例8提供的解调上行信息的系统的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
需要说明的是，本发明实施例的技术方案，可以应用于各种通信系统，例如：GSM(Global System for Mobile Communication，全球移动通信系统)，CDMA(Code Division Multiple Access，码分多址)系统，WCDMA(Wideband Code Division Multiple Access Wireless，宽带码分多址)系统，GPRS(General Packet Radio Service，通用分组无线业务)，LTE(Long Term Evolution，长期演进)等。
终端设备(Terminal Device)，也可称之为移动终端(Mobile Terminal)、用户设备(User Equipment)、移动终端设备等，可以经无线接入网(例如，RAN(Radio Access Network，居民接入网))与一个或多个核心网进行通信，终端设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。
基站，可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(eNB或e-NodeB，evolutional Node B)，本发明实施例并不进行限定。
实施例1
本发明实施例提供了一种解调上行信息的方法，参见图1。
其中，该方法包括：
101：基站根据终端设备的信道质量和/或终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为终端设备选取第一调制编码方法MCS索引。
102：基站根据MCS索引回退值和第一MCS索引，确定第二MCS索引，其中，MCS索引回退值用于对第一MCS索引进行减小处理从而得到第二MCS索引。
其中，上行信息可以包括：参考信号，探测信号以及物理信道。
由于在本发明实施例中并非对终端设备的上行信息进行实时的频率偏移估计，终端设备可能应为当前的移动速度以及信道质量等因素的影响，造成eNodeB根据预先记录的终端设备的历史频率偏移值对终端设备的频率进行频率偏移校准不准确，进而造成解调终端设备的PUSCH不准确。
因此，在本发明实施例中预先在eNodeB中设置有MCS(Modulation and Coding Scheme，调制编码方法)索引回退值，将根据终端设备的信道质量和/或终端设备的PUSCH(Physical uplink Shared Channel，物理上行共享信道)接收BLER(Block Error Rate，目标块差错率)确定的MCS索引，通过MCS索引回退值将MCS索引进行减法处理，降低向终端设备发送的MCS索引数值。即：MCS索引＝n；预设的MCS索引回退值＝x；第二MCS索引＝n-x。
需要说明的是，基站根据终端设备的信道质量确定的MCS索引，可以包括但不限于：基站根据终端设备上报的CQI(Channel Quality Indicator，信道质量指示)确定的MCS索引，或者基站根据终端设备上报RSRP(Reference Singal Received Power，参考信号接收功率)确定的MCS索引，或者基站根据终端设备上报RSRQ(Reference Singal Received Quality，参考信号接收质量)确定的MCS索引，基站根据终端设备上报SRS(Sounding Reference Signal，信道探测参考信号)确定的MCS索引，或者基站确定其他可表征终端设备信道质量的方式确定的MCS索引，这里并不做限定。
其中，将第二MCS索引发送给终端设备的方式可以包括但不限于：PDCCH(Physical Downlink Control Channel，物理下行控制信道)或EPDCCH(Enhanced Physical Downlink Control Channel，增强的物理下行控制信道)。
103：基站将第二MCS索引发送给终端设备。
104：基站根据终端设备的历史频率偏移值对终端设备的频率进行频率偏 移校准，其中，历史频率偏移值为基站存储的终端设备的频率偏移值。
eNodeB中记录有各个终端设备的历史频率偏移值的模块，eNodeB可以通过以下方式得到每个终端设备的历史频率偏移值：
在终端设备进行随机接入过程中得到，或者在终端设备发送的1毫秒传输时间间隔的上行信息中得到；或者，
检测到终端设备达到了第一评估门限后进行指定方式的调度或配置或指示后，通过终端设备发送的上行信息得到；或者，
根据终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道时得到。
105：基站接收终端设备根据第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH。
本发明实施例通过为终端设备选取MCS索引后，根据预设的MCS索引回退指数对MCS索引进行减小处理，并将减小后的MCS索引指示给终端设备，并通过记录的历史频率偏移值对终端设备进行频率偏移估计，并在频率偏移估计之后解调终端设备根据减小后的MCS索引发送PUSCH。通过预先记录的历史频率偏移值进行频率校准，无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
实施例2
本发明实施例提供了一种解调上行信息的方法，参见图2。
其中，该方法包括：
201：终端设备接收第二MCS索引，其中，第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，第一MCS索引为基站根据终端设备的信道质量和/或终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
202：终端设备根据第二MCS索引发送上行信息。
其中，上行信息可以包括：参考信号，探测信号以及物理信道。
本发明实施例通过终端设备根据减小后的MCS索引发送上行信息，使得终端设备向基站发送上行信息的速率降低，便于在基站使用历史频率偏移值进行频率校准不准确的情况下，提高上行信息的可靠性，从而提高终端设备发送 的上行信息的准确率。
实施例3
本发明实施例提供了一种解调上行信息的方法中确定终端设备的历史频率偏移值的方法，参见图3。该方法包括：
301：当终端设备进行1毫秒TTI的上行信息传输后，基站根据终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定终端设备的频率偏移值；
其中，触发终端设备进行1毫秒TTI的上行信息传输的方式并不限定。
eNodeB在该终端设备进行1毫秒TTI的上行信息传输时，即可以通过该终端设备在1毫秒TTI发送PUSCH中的两个DM-RS的相位差确定频率偏移值。
302：基站根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI(Uplink Control Information，上行控制信息)。
其中，基站确定终端设备的历史频率偏移值的方式可以包含但不限于：基站通过两个DM-RS的相位差计算出频率偏移值，并将此频偏偏移值储存或替换此终端设备的历史频偏偏移值。
本发明实施例通过在终端设备进行1毫秒TTI的上行信息传输，基于该1毫秒TTI的PUSCH中的DM-RS，确定终端设备的历史频率偏移值。无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
本发明实施例提供了另一种解调上行信息的方法中确定终端设备的历史频率偏移值的方法，参见图4。该方法包括：
401：当基站检测到终端设备达到了第一评估门限后，向终端设备发送至少一个第一资源指示信息，第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；
其中，基站检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH 接收的BLER，终端设备的PUSCH的HARQ(Hybrid Automatic Repeat reQ终端设备st，混合自动重传请求)重传次数，终端设备的MAC(Media Access Control，媒体介入控制)包/RLC(Radio Link Control，无线链路控制)包/TCP(Transmission Control Protocol传输控制协议)包/IP(Internet Protocol，因特网协议)包错误率或错误次数，终端设备的MAC包ARQ(Automatic Repeat reQ终端设备st，自动重传请求)次数，终端设备对应的业务的QoS(Quality of Service，服务质量)中的一种或多种参数达到了指定阈值。
其中，eNodeB向终端设备发送至少一个资源指示信息具体可以是DCI(Downlink Control Information，下行控制信息)或者高层信令。高层信令(higher layer signalling)可以包含但不限于RNC(Radio Network Controller，无线网络控制器)信令，RRC(Radio Resource Control，无线资源控制)信令，MAC信令，或者广播消息中携带的信令。在此种方式下，eNodeB在不同时刻通过PDCCH或EPDCCH向终端设备发送两个DCI，一个DCI指示终端设备在一个0.5毫秒TTI的PUSCH的上行频域资源；或者，eNodeB在相同时刻通过PDCCH或EPDCCH向终端设备发送一个DCI或至少一个高层信令，一个DCI或至少一个高层信令指示终端设备在两个0.5毫秒TTI的PUSCH的上行频域资源。其中，终端设备在两个0.5毫秒TTI的PUSCH的上行频域资源需要满足具备至少一个相同的频域资源。
402：终端设备接收至少一个第一资源指示信息，第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；
其中，两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB(Physical Resource Block，物理资源块)索引或者包含至少一个相同的资源块组RBG(Resource Block Group，资源块组)索引，两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数。
403：终端设备根据第一资源指示信息在两个0.5毫秒TTI中发送PUSCH。
404：基站接收终端设备发送的两个0.5毫秒TTI的PUSCH；其中，两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数。
需要说明的是，本实施可扩展的：若基站接收终端设备发送的两个0.5毫秒TTI的时间间隔大于n*0.5毫秒，n为非零的正整数，那么基站将不会执行 步骤405和步骤406，即不会确定或更新终端设备的频偏偏移值。
405：基站根据两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定终端设备的频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
eNodeB可以根据该终端设备在两个0.5毫秒TTI的PUSCH中的两个DM-RS的相位差确定频率偏移值，其中，每个0.5毫秒TTI的PUSCH中会包括一个DM-RS；或者，根据两个0.5毫秒TTI的相同的PRB索引或RBG索引的频率上的两个DM-RS的相位差确定频率偏移值。
其中，两个0.5毫秒TTI发送PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS可以不是全部的DM-RS的码子序列，即只是PUSCH上的DM-RS的部分码子序列。基站可以根据该相同的PRB索引或相同RBG索引的频域上两个DM-RS的部分码子序列的相位差确定频率偏移值。码子序列可以是任何数字序列，这里不做限定。示例性的如ZC(Zadoff-Chu)序列。
406：基站根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
需要说明的是，本实施中说明只有当两个0.5ms TTI的两个PUSCH包含相同的频域资源，如PRB索引相同或RBG索引相同时，基站才会根据两个0.5ms TTI上的DM-RS的相位差确定频率偏移值。可理解为若两个0.5ms TTI的两个PUSCH不包含相同的频域资源时，基站就不会去根据两个0.5ms TTI上的DM-RS的相位差确定频率偏移值。
本发明实施例通过指示终端设备在两个0.5毫秒TTI中发送PUSCH，基站基于接收到的两个0.5毫秒TTI中发送PUSCH的两个DM-RS，确定终端设备的历史频率偏移值。无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
本发明实施例提供了另一种解调上行信息的方法中确定终端设备的历史频率偏移值的方法，参见图5。该方法包括：
501：当基站检测到终端设备达到了第一评估门限后，向终端设备发送模 式指示信息；模式指示信息用于指示终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
其中，该上行信息包括但不限于PRACH(Physical Random Access Channel，物理随机接入信道)，PUSCH，PUCCH(Physical Uplink Control Channel，物理上行控制信道)。
其中，基站检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值。
502：终端设备接收模式指示信息；模式指示信息用于指示终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
503：终端设备根据模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
需要说明的是，终端设备根据模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式，可以是收到模式指示信息后立即转变为发送1毫秒TTI的上行信息的模式，也可以是经过X个时隙后再转变为发送1毫秒TTI的上行信息的模式，其中X是大于或等于6的正整数。
504：终端设备发送1毫秒TTI的PUSCH；
505：基站接收终端设备发送的1毫秒TTI的PUSCH；
506：基站根据终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定终端设备的频率偏移值。
eNodeB在该终端设备进行1毫秒TTI的上行信息传输时，即可以通过该终端设备在1毫秒TTI发送PUSCH中的两个DM-RS的相位差确定频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
507：基站根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
本发明实施例通过指示终端设备在1毫秒TTI的PUSCH，基站基于接收到的1毫秒TTI的PUSCH的两个DM-RS，确定终端设备的历史频率偏移值。无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率 偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
本发明实施例提供了另一种解调上行信息的方法中确定终端设备的历史频率偏移值的方法，参见图6。该方法包括：
601：当基站检测到终端设备达到了第一评估门限后，在与终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向终端设备发送至少一个第二资源指示信息，第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
其中，在此种方式下，eNodeB通过PDCCH或EPDCCH向终端设备发送DCI，并在DCI中指示终端设备在0.5毫秒TTI的PUSCH的上行频域资源。其中，终端设备在0.5毫秒TTI的PUSCH的上行频域资源需要满足与终端设备发送的SRS具备相同的频域资源。
由于eNodeB了解各个终端设备的周期或非周期SRS(Sounding Reference Signal，信道探测参考信号)的发送时间，因此可以针对终端设备在发送SRS之前或之后预设时间间隔内对终端设备进行调度发送PUSCH，以实现通过终端设备在发送SRS的上行频率资源和终端设备被调度PUSCH的上行频率资源具备相同的频率资源，从而确定终端设备的频率偏移值。
602：终端设备接收至少一个第二资源指示信息，第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
603：终端设备根据第二资源指示信息在0.5毫秒TTI发送PUSCH以及发送SRS。
其中，0.5毫秒TTI发送的PUSCH的上行频域资源与SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
其中，若m为负整数，则表示PUSCH在SRS所在符号之前发送，若m 为正整数，则表示PUSCH在SRS所在符号之后发送。
604：基站接收终端设备发送的0.5毫秒TTI的PUSCH，以及基站接收终端设备发送的SRS；其中，0.5毫秒TTI发送的PUSCH的上行频域资源与SRS所在的上行频域资源包含至少一个相同的频域资源，预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
其中，频域资源可以包含至少一个相同的RBG索引或者包含至少一个相同的RBG索引。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
需要说明的是，本实施可扩展的：若基站接收终端设备发送的0.5毫秒TTI的PUSCH，以及基站接收终端设备发送的SRS的时间间隔大于m*0.5毫秒，m为非零的整数，那么基站将不会执行步骤605和步骤606，即不会确定或更新终端设备的频偏偏移值。
605：根据SRS以及0.5毫秒TTI的PUSCH中的DM-RS，或者根据SRS和0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定终端设备的频率偏移值。
eNodeB在该终端设备发送的SRS的上行频域资源和终端设备在0.5毫秒TTI中发送PUSCH中的DM-RS的相位差确定频率偏移值；或者，eNodeB在该终端设备发送的SRS的上行频域资源和该终端设备在0.5毫秒TTI中相同的PRB索引或相同的RBG索引的频率上的DM-RS的相位差确定频率偏移值。
其中，SRS的上行频域资源中包含一个SRS全部的码子序列；终端设备在0.5毫秒TTI中发送PUSCH中包括一个DM-RS全部的码子序列，终端设备可以根据这两个码子序列的相位差频率偏移值。
其中，在0.5毫秒TTI发送的PUSCH和SRS相同的PRB索引或相同RBG索引的频域资源上的DM-RS的码子序列可以不是全部的DM-RS的码子序列，即只是PUSCH上的DM-RS的部分码子序列。或者，在0.5毫秒TTI发送PUSCH和SRS相同的PRB索引或相同的RBG索引的频域上的SRS的码子序列可以不是全部的SRS的码子序列，即只是PUSCH上的SRS的部分码子序列。终端设备根据SRS的码子序列和DM-RS码子序列的相位差频率偏移值，SRS的码子序列可以是上述的全部的SRS码子序列也可以是部分的SRS的码子序列，DM-RS码子序列可以是上述的全部的DM-RS码子序列也可以是部分的 DM-RS的码子序列。
码子序列可以是任何数字序列，这里不做限定。示例性的如ZC(Zadoff-Chu)序列。
终端设备在0.5毫秒TTI中相同的PRB索引或RBG索引的频率上包含一个DM-RS。
606：基站根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
本发明实施例通过指示终端设备在0.5毫秒TTI发送PUSCH以及发送SRS，基站基于接收到的0.5毫秒TTI的PUSCH的DM-RS以及SRS，确定终端设备的历史频率偏移值。无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
本发明实施例提供了另一种解调上行信息的方法中确定终端设备的历史频率偏移值的方法，参见图7。该方法包括：
701：当基站检测到终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向终端设备发送随机接入过程指示信息；
其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值。
在本发明实施例中，通过指示终端设备触发随机接入过程中的上行信道来确定终端设备的频率偏移值。
702：终端设备接收通过PDCCH发送的随机接入过程指示信息；
703：终端设备根据随机接入过程指示信息发送随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
704：基站接收终端设备根据随机接入过程指示信息发送的随机接入过程 中的上行信道；
705：根据终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定终端设备的频率偏移值；其中上行信道包括：PRACH和/或PUSCH；
其中，在终端设备触发了随机接入过程后发送的PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。相应的，eNodeB在该终端设备进行1毫秒TTI的上行信息传输时，通过终端设备发送PRACH的Preamble序列偏移或PUSCH的两个DM-RS的相位差确定频率偏移值。示例的，基站根据随机接入过程中Preamble序列的偏移情况判断终端设备的上行频率偏移值。
706：根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
本发明实施例通过指示终端设备发送随机接入过程中的上行信道，基站基于接收到的该终端设备发送的随机接入过程中的上行信道中的DM-RS，确定终端设备的历史频率偏移值。无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
本发明实施例提供了另一种解调上行信息的方法中确定终端设备的历史频率偏移值的方法，参见图8。该方法包括：
801：终端设备检测自身是否达到了第二评估门限；其中，第二评估门限包括：终端设备的移动速度，终端设备接收的MCS索引与MCS索引期望值之差，终端设备接收的MCS索引与终端设备上报CQI对应的MCS索引之差中的一种或多种达到指定阈值。
其中，预先在终端设备中设定的第二评估门限。
关于终端设备检测到达到了第二评估门限包括：终端设备的移动速度，终端设备接收的MCS索引与MCS索引期望值之差，终端设备接收的MCS索引与终端设备上报CQI对应的MCS索引之差中的一种或多种达到指定阈值。
802：当终端设备检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH。
803：基站接收终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH；其中，第二评估门限包括：终端设备的移动速度，终端设备接收的MCS索引与MCS 索引期望值之差，终端设备接收的MCS索引与终端设备上报CQI对应的MCS索引之差中的一种或多种达到指定阈值。
804：基站根据终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定终端设备的频率偏移值，其中上行信道包括：PRACH和/或PUSCH；
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，在终端设备触发了随机接入过程后发送的PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。相应的，eNodeB在该终端设备进行1毫秒TTI的上行信息传输时，通过终端设备发送PRACH的Preamble序列偏移或PUSCH的两个DM-RS的相位差确定频率偏移值。
805：基站根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
本发明实施例在终端设备自身达到了第二评估门限时触发了发送随机接入过程中的上行信道，基站基于该终端设备发送的随机接入过程中的上行信道，确定终端设备的历史频率偏移值。无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
实施例4
本发明实施例提供了一种基站，参见图9。
其中，该基站包括：
选取模块901，用于根据终端设备的信道质量和/或终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为终端设备选取第一调制编码方法MCS索引；
第一确定模块902，用于根据MCS索引回退值和第一MCS索引，确定第二MCS索引，其中，MCS索引回退值用于对第一MCS索引进行减小处理从而得到第二MCS索引；
第一发送模块903，用于将第二MCS索引发送给终端设备；
校准模块904，用于根据终端设备的历史频率偏移值对终端设备的频率进 行频率偏移校准，其中，历史频率偏移值为存储的终端设备的频率偏移值；
第一接收模块905，用于接收终端设备根据第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH。
其中，上行信息可以包括：参考信号，探测信号以及物理信道。
由于在本发明实施例中并非对终端设备的上行信息进行实时的频率偏移估计，终端设备可能应为当前的移动速度以及信道质量等因素的影响，造成eNodeB根据预先记录的终端设备的历史频率偏移值对终端设备的频率进行频率偏移校准不准确，进而造成解调终端设备的PUSCH不准确。
因此，在本发明实施例中预先在eNodeB中设置有MCS索引回退值，将根据终端设备的信道质量和/或终端设备的PUSCH接收BLER确定的MCS索引，通过MCS索引回退值将MCS索引进行减法处理，降低向终端设备发送的MCS索引数值。即：MCS索引＝n；预设的MCS索引回退值＝x；第二MCS索引＝n-x。
其中，将第二MCS索引发送给终端设备的方式可以包括但不限于：PDCCH或EPDCCH。
需要说明的是，基站根据终端设备的信道质量确定的MCS索引，可以包括但不限于：基站根据终端设备上报的CQI确定的MCS索引，或者基站根据终端设备上报RSRP确定的MCS索引，或者基站根据终端设备上报RSRQ确定的MCS索引，基站根据终端设备上报SRS确定的MCS索引，或者基站确定其他可表征终端设备信道质量的方式确定的MCS索引，这里并不做限定。
其中，本实施例中的基站，可以实现如本发明图1所示实施例中的流程。
可选的，第一确定模块902，还用于当终端设备进行1毫秒TTI的上行信息传输后，根据终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定终端设备的频率偏移值；
可选的，第一确定模块902，还用于根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，基站确定终端设备的历史频率偏移值的方式可以包含但不限于：基站通过两个DM-RS的相位差计算出频率偏移值，并将此频偏偏移值储存或替 换此终端设备的历史频偏偏移值。
其中，基于上述模块，本实施例中的基站，还可以实现如本发明图3所示实施例中的流程。
可选的，第一发送模块903，还用于当检测到终端设备达到了第一评估门限后，向终端设备发送至少一个第一资源指示信息，第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的混合自动重传请求HARQ重传次数，终端设备的媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的错误率或错误次数，终端设备的MAC包自动重传请求ARQ次数，终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
可选的，第一接收模块905，还用于接收终端设备发送的两个0.5毫秒TTI的PUSCH；其中，两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
需要说明的是，本实施可扩展的：若基站接收终端设备发送的两个0.5毫秒TTI的时间间隔大于n*0.5毫秒，n为非零的正整数，那么基站将不会执行第一确定模块902中确定或更新终端设备的频偏偏移值的步骤。
可选的，第一确定模块902，还用于根据两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定终端设备的频率偏移值；
可选的，第一确定模块902，还用于根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
eNodeB可以根据该终端设备在两个0.5毫秒TTI的PUSCH中的两个DM-RS的相位差确定频率偏移值。其中，每个0.5毫秒TTI的PUSCH中会包括一个DM-RS；或者，根据两个0.5毫秒TTI的相同的PRB索引或RBG索引的频率上的两个DM-RS的相位差确定频率偏移值。
其中，两个0.5毫秒TTI发送PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS可以不是全部的DM-RS的码子序列，即只是 PUSCH上的DM-RS的部分码子序列。终端设备可以根据这相同的PRB索引或相同RBG索引的频域上两个DM-RS的部分码子序列的相位差频率偏移值。码子序列可以是任何数字序列，这里不做限定。示例性的如ZC(Zadoff-Chu)序列。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，基于上述模块，本实施例中的基站，还可以实现如本发明图4所示实施例中基站侧实现的流程。
可选的，第一发送模块903，还用于当检测到终端设备达到了第一评估门限后，向终端设备发送模式指示信息；模式指示信息用于指示终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
可选的，第一接收模块905，还用于接收终端设备发送的1毫秒TTI的PUSCH；
可选的，第一确定模块902，还用于根据终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定终端设备的频率偏移值。
可选的，第一确定模块902，还用于根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，基于上述模块，本实施例中的基站，还可以实现如本发明图5所示实施例中基站侧实现的流程。
可选的，第一发送模块903，还用于当检测到终端设备达到了第一评估门限后，在与终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向终端设备发送至少一个第二资源指示信息，第二资源指示信息用于指示0.5毫秒 TTI的PUSCH的上行频域资源；其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
可选的，第一接收模块905，还用于接收终端设备发送的0.5毫秒TTI的PUSCH，以及接收终端设备发送的SRS；其中，0.5毫秒TTI发送的PUSCH的上行频域资源与SRS所在的上行频域资源包含至少一个相同的频域资源，预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
其中，在此种方式下，eNodeB通过PDCCH或EPDCCH向终端设备发送DCI，并在DCI中指示终端设备在0.5毫秒TTI的PUSCH的上行频域资源。其中，终端设备在0.5毫秒TTI的PUSCH的上行频域资源需要满足与终端设备发送的SRS具备相同的频域资源。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
由于eNodeB了解各个终端设备的周期或非周期SRS(Sounding Reference Signal，信道探测参考信号)的发送时间，因此可以针对终端设备在发送SRS之前或之后预设时间间隔内对终端设备进行调度发送PUSCH，以实现通过终端设备在发送SRS的上行频率资源和终端设备被调度PUSCH的上行频率资源具备相同的频率资源，从而确定终端设备的频率偏移值。
可选的，第一确定模块902，还用于根据SRS以及0.5毫秒TTI的PUSCH中的DM-RS，或者根据SRS和0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定终端设备的频率偏移值；
eNodeB在该终端设备发送的SRS的上行频域资源和终端设备在0.5毫秒TTI中发送PUSCH中的DM-RS的相位差确定频率偏移值；或者，eNodeB在该终端设备发送的SRS的上行频域资源和该终端设备在0.5毫秒TTI中相同的PRB索引或相同的RBG索引的频率上的DM-RS的相位差确定频率偏移值。
其中，SRS的上行频域资源中包含一个SRS全部的码子序列；终端设备在0.5毫秒TTI中发送PUSCH中包括一个DM-RS全部的码子序列，终端设备可以根据这两个码子序列的相位差频率偏移值。
其中，在0.5毫秒TTI发送的PUSCH和SRS相同的PRB索引或相同RBG索引的频域资源上的DM-RS的码子序列可以不是全部的DM-RS的码子序列，即只是PUSCH上的DM-RS的部分码子序列。或者，在0.5毫秒TTI发送PUSCH和SRS相同的PRB索引或相同的RBG索引的频域上的SRS的码子序列可以不是全部的SRS的码子序列，即只是PUSCH上的SRS的部分码子序列。终端设备根据SRS的码子序列和DM-RS码子序列的相位差频率偏移值，SRS的码子序列可以是上述的全部的SRS码子序列也可以是部分的SRS的码子序列，DM-RS码子序列可以是上述的全部的DM-RS码子序列也可以是部分的DM-RS的码子序列。
码子序列可以是任何数字序列，这里不做限定。示例性的如ZC(Zadoff-Chu)序列。
可选的，第一确定模块902，还用于根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
需要说明的是，本实施可扩展的：若基站接收终端设备发送的0.5毫秒TTI的PUSCH，以及基站接收终端设备发送的SRS的时间间隔大于m*0.5毫秒，m为非零的整数，那么基站将不会通过第一确定模块902执行该模块流程步骤，即不会确定或更新终端设备的频偏偏移值。
其中，基于上述模块，本实施例中的基站，还可以实现如本发明图6所示实施例中基站侧实现的流程。
可选的，第一发送模块903，还用于当检测到终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向终端设备发送随机接入过程指示信息；其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
可选的，第一接收模块905，还用于接收终端设备根据随机接入过程指示信息发送的随机接入过程中的上行信道；
可选的，第一确定模块902，还用于根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频 率偏移值，其中上行信道包括：物理随机接入信道PRACH和/或PUSCH；
可选的，第一确定模块902，还用于根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，在终端设备触发了随机接入过程后发送的PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。相应的，eNodeB在该终端设备进行1毫秒TTI的上行信息传输时，通过终端设备发送PRACH的Preamble序列偏移或PUSCH的两个DM-RS的相位差确定频率偏移值。示例的，基站根据随机接入过程中Preamble序列的偏移情况判断终端设备的上行频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，基于上述模块，本实施例中的基站，还可以实现如本发明图7所示实施例中基站侧实现的流程。
可选的，第一接收模块905，还用于接收终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH；第二评估门限包括：终端设备的移动速度，终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与终端设备上报CQI对应的MCS索引之差中的一种或多种达到指定阈值
可选的，第一确定模块902，还用于根据终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定终端设备的频率偏移值，其中上行信道包括：PRACH和/或PUSCH；
可选的，第一确定模块902，还用于根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，基于上述模块，本实施例中的基站，还可以实现如本发明图8所示实施例中基站侧实现的流程。
本发明实施例通过为终端设备选取MCS索引后，根据预设的MCS索引回退指数对MCS索引进行回退处理，并将回退后的MCS索引指示给终端设备，并通过记录的历史频率偏移值对终端设备进行频率偏移估计，并在频率偏移估计之后解调终端设备根据回退后的MCS索引发送PUSCH。通过预先记录的历史频率偏移值进行频率校准，无需如现有方式中在0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
另外，通过在终端设备进行1毫秒TTI的上行信息传输，基于该1毫秒TTI的PUSCH中的DM-RS，确定终端设备的历史频率偏移值；或者，指示终端设备在两个0.5毫秒TTI中发送PUSCH，基站基于接收到的两个0.5毫秒TTI中发送PUSCH的两个DM-RS，确定终端设备的历史频率偏移值；或者，指示终端设备在1毫秒TTI的PUSCH，基站基于接收到的1毫秒TTI的PUSCH的两个DM-RS，确定终端设备的历史频率偏移值；或者，指示终端设备在0.5毫秒TTI发送PUSCH以及发送SRS，基站基于接收到的0.5毫秒TTI的PUSCH的DM-RS以及SRS，确定终端设备的历史频率偏移值；或者，指示终端设备发送随机接入过程中的上行信道，基站基于接收到的该终端设备发送的随机接入过程中的上行信道中的DM-RS，确定终端设备的历史频率偏移值，或者，在终端设备自身达到了第二评估门限时触发了发送随机接入过程中的上行信道，基站基于该终端设备发送的随机接入过程中的上行信道，确定终端设备的历史频率偏移值。基站通过上述各种确定历史频率偏移值，无需如现有方式中在0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
实施例5
本发明实施例提供了一种终端设备，参见图10。
其中，该终端设备包括：
第二接收模块1001，用于接收第二调制编码方法MCS索引，其中，第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，第一MCS索引为基站根据终端设备的信道质量和/或终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
第二发送模块1002，用于根据第二MCS索引发送上行信息。
其中，上行信息可以包括：参考信号，探测信号以及物理信道。
其中，本实施例中的终端设备，可以实现如本发明图2所示实施例中的流程。
可选的，第二接收模块1001，还用于接收至少一个第一资源指示信息，第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
可选的，第二发送模块1002，还用于根据第一资源指示信息在两个0.5毫秒TTI中发送PUSCH。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，基于上述模块，本实施例中的终端设备，还可以实现如本发明图4所示实施例中终端设备侧实现的流程。
可选的，装置还包括：转变模块1003，
可选的，第二接收模块1001，还用于接收模式指示信息；模式指示信息用于指示终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式。
需要说明的是，终端设备根据模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式，可以是收到模式指示信息后立即转变为发送1毫秒TTI的上行信息的模式，也可以是经过X个时隙后再转变为发送1毫秒TTI的上行信息的模式，其中X是大于或等于6的正整数。
可选的，转变模块1003，用于根据模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
可选的，第二发送模块1002，还用于发送1毫秒TTI的PUSCH。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，基于上述模块，本实施例中的终端设备，还可以实现如本发明图5所示实施例中终端设备侧实现的流程。
可选的，第二接收模块1001，还用于接收至少一个第二资源指示信息，第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
可选的，第二发送模块1002，还用于根据第二资源指示信息在0.5毫秒TTI发送PUSCH以及发送SRS。
其中，0.5毫秒TTI发送的PUSCH的上行频域资源与SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
其中，若m为负整数，则表示PUSCH在SRS所在符号之前发送，若m为正整数，则表示PUSCH在SRS所在符号之后发送。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，基于上述模块，本实施例中的终端设备，还可以实现如本发明图6所示实施例中终端设备侧实现的流程。
可选的，第二接收模块1001，还用于接收通过PDCCH发送的随机接入过程指示信息；
可选的，第二发送模块1002，还用于根据随机接入过程指示信息发送随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH。
其中，在终端设备触发了随机接入过程后发送PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，基于上述模块，本实施例中的终端设备，还可以实现如本发明图7所示实施例中终端设备侧实现的流程。
可选的，装置还包括：检测模块1004，
检测模块1004，用于检测自身是否达到了第二评估门限；其中，第二评估门限包括：终端设备的移动速度，终端设备接收的MCS索引与MCS索引期望 值之差，终端设备接收的MCS索引与终端设备上报CQI对应的MCS索引之差中的一种或多种达到指定阈值；
可选的，第二发送模块1002，还用于当检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH。
其中，在终端设备触发了随机接入过程后发送的PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，基于上述模块，本实施例中的终端设备，还可以实现如本发明图8所示实施例中终端设备侧实现的流程。
本发明实施例通过终端设备根据减小后的MCS索引发送上行信息，使得终端设备向基站发送上行信息的速率降低，便于在基站使用历史频率偏移值进行频率校准不准确的情况下，提高上行信息的可靠性，从而提高终端设备发送的上行信息的准确率。
实施例6
本发明实施例提供了一种基站，参见图11。
其中，该基站包括：处理器1101，发送器1102，接收器1103；
处理器1101，用于根据终端设备的信道质量和/或终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为终端设备选取第一调制编码方法MCS索引；根据MCS索引回退值和第一MCS索引，确定回退后的第二MCS索引，其中，MCS索引回退值用于对第一MCS索引进行减小处理从而得到第二MCS索引；根据终端设备的历史频率偏移值对终端设备的频率进行频率偏移校准，历史频率偏移值为自身存储的终端设备的频率偏移值；根据频率偏移校准之后的频率解调PUSCH；
发送器1102，用于将第二MCS索引发送给终端设备；
接收器1103，用于接收终端设备根据第二MCS索引发送的上行信息。
其中，上行信息可以包括：参考信号，探测信号以及物理信道。
由于在本发明实施例中并非对终端设备的上行信息进行实时的频率偏移 估计，终端设备可能应为当前的移动速度以及信道质量等因素的影响，造成eNodeB根据预先记录的终端设备的历史频率偏移值对终端设备的频率进行频率偏移校准不准确，进而造成解调终端设备的PUSCH不准确。
因此，在本发明实施例中预先在eNodeB中设置有MCS索引回退值，将根据终端设备的信道质量和/或终端设备的PUSCH接收BLER确定的MCS索引，通过MCS索引回退值将MCS索引进行减法处理，降低向终端设备发送的MCS索引数值。即：MCS索引＝n；预设的MCS索引回退值＝x；第二MCS索引＝n-x。
其中，将第二MCS索引发送给终端设备的方式可以包括但不限于：PDCCH或EPDCCH。
需要说明的是，基站根据终端设备的信道质量确定的MCS索引，可以包括但不限于：基站根据终端设备上报的CQI确定的MCS索引，或者基站根据终端设备上报RSRP确定的MCS索引，或者基站根据终端设备上报RSRQ确定的MCS索引，基站根据终端设备上报SRS确定的MCS索引，或者基站确定其他可表征终端设备信道质量的方式确定的MCS索引，这里并不做限定。
其中，本实施例中的基站，可以实现如本发明图1所示实施例中的流程。
可选的，处理器1101，还用于当终端设备进行1毫秒TTI的上行信息传输后，根据终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定终端设备的频率偏移值；根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
可选的，本实施例中的基站，还可以实现如本发明图3所示实施例中的流程。
其中，基站确定终端设备的历史频率偏移值的方式可以包含但不限于：基站通过两个DM-RS的相位差计算出频率偏移值，并将此频偏偏移值储存或替换此终端设备的历史频偏偏移值。
可选的，发送器1102，还用于当检测到终端设备达到了第一评估门限后，向终端设备发送至少一个第一资源指示信息，第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的混合自 动重传请求HARQ重传次数，终端设备的媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的错误率或错误次数，终端设备的MAC包自动重传请求ARQ次数，终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
可选的，接收器1103，还用于接收终端设备发送的两个0.5毫秒TTI的PUSCH；其中，两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
可选的，处理器1101，还用于根据两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定终端设备的频率偏移值；根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
eNodeB可以根据该终端设备在两个0.5毫秒TTI的PUSCH中的两个DM-RS的相位差确定频率偏移值。其中，每个0.5毫秒TTI的PUSCH中会包括一个DM-RS；或者，根据两个0.5毫秒TTI的相同的PRB索引或RBG索引的频率上的两个DM-RS的相位差确定频率偏移值。
其中，两个0.5毫秒TTI发送PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS可以不是全部的DM-RS的码子序列，即只是PUSCH上的DM-RS的部分码子序列。终端设备可以根据这相同的PRB索引或相同RBG索引的频域上两个DM-RS的部分码子序列的相位差频率偏移值。码子序列可以是任何数字序列，这里不做限定。示例性的如ZC(Zadoff-Chu)序列。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，本实施例中的基站，还可以实现如本发明图4所示实施例中基站侧实现的流程。
需要说明的是，本实施可扩展的：若基站接收终端设备发送的两个0.5毫秒TTI的时间间隔大于n*0.5毫秒，n为非零的正整数，那么处理器将不会执行确定或更新终端设备的频偏偏移值的步骤。
可选的，发送器1102，还用于当检测到终端设备达到了第一评估门限后， 向终端设备发送模式指示信息；模式指示信息用于指示终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
可选的，接收器1103，还用于接收终端设备发送的1毫秒TTI的PUSCH；
可选的，处理器1101，还用于根据终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定终端设备的频率偏移值；根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，本实施例中的基站，还可以实现如本发明图5所示实施例中基站侧实现的流程。
可选的，发送器1102，还用于当检测到终端设备达到了第一评估门限后，在与终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向终端设备发送至少一个第二资源指示信息，第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
可选的，接收器1103，还用于接收终端设备发送的0.5毫秒TTI的PUSCH，以及接收终端设备发送的SRS；其中，0.5毫秒TTI发送的PUSCH的上行频域资源与SRS所在的上行频域资源包含至少一个相同的频域资源，预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
可选的，处理器1101，还用于根据SRS以及0.5毫秒TTI的PUSCH中的DM-RS，或者根据SRS和0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS 和SRS，确定终端设备的频率偏移值；根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，在此种方式下，eNodeB通过PDCCH或EPDCCH向终端设备发送DCI，并在DCI中指示终端设备在0.5毫秒TTI的PUSCH的上行频域资源。其中，终端设备在0.5毫秒TTI的PUSCH的上行频域资源需要满足与终端设备发送的SRS具备相同的频域资源。
由于eNodeB了解各个终端设备的周期或非周期SRS的发送时间，因此可以针对终端设备在发送SRS之前或之后预设时间间隔内对终端设备进行调度发送PUSCH，以实现通过终端设备在发送SRS的上行频率资源和终端设备被调度PUSCH的上行频率资源具备相同的频率资源，从而确定终端设备的频率偏移值。
eNodeB在该终端设备发送的SRS的上行频域资源和终端设备在0.5毫秒TTI中发送PUSCH中的DM-RS的相位差确定频率偏移值；或者，eNodeB在该终端设备发送的SRS的上行频域资源和该终端设备在0.5毫秒TTI中相同的PRB索引或相同的RBG索引的频率上的DM-RS的相位差确定频率偏移值。
其中，SRS的上行频域资源中包含一个SRS全部的码子序列；终端设备在0.5毫秒TTI中发送PUSCH中包括一个DM-RS全部的码子序列，终端设备可以根据这两个码子序列的相位差频率偏移值。
其中，在0.5毫秒TTI发送的PUSCH和SRS相同的PRB索引或相同RBG索引的频域资源上的DM-RS的码子序列可以不是全部的DM-RS的码子序列，即只是PUSCH上的DM-RS的部分码子序列。或者，在0.5毫秒TTI发送PUSCH和SRS相同的PRB索引或相同的RBG索引的频域上的SRS的码子序列可以不是全部的SRS的码子序列，即只是PUSCH上的SRS的部分码子序列。终端设备根据SRS的码子序列和DM-RS码子序列的相位差频率偏移值，SRS的码子序列可以是上述的全部的SRS码子序列也可以是部分的SRS的码子序列，DM-RS码子序列可以是上述的全部的DM-RS码子序列也可以是部分的DM-RS的码子序列。
码子序列可以是任何数字序列，这里不做限定。示例性的如ZC(Zadoff-Chu)序列。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，本实施例中的基站，还可以实现如本发明图6所示实施例中基站侧实现的流程。
可选的，发送器1102，还用于当检测到终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向终端设备发送随机接入过程指示信息；其中，检测到终端设备达到了第一评估门限包括：终端设备的移动速度，终端设备的MCS变化均值，终端设备的MCS方差，终端设备的PUSCH接收的BLER，终端设备的PUSCH的HARQ重传次数，终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，终端设备的MAC包ARQ次数，终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
可选的，接收器1103，还用于接收终端设备根据随机接入过程指示信息发送的随机接入过程中的上行信道；
可选的，处理器1101，还用于根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频率偏移值，其中上行信道包括：物理随机接入信道PRACH和/或PUSCH；根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，在终端设备触发了随机接入过程后发送的PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。相应的，eNodeB在该终端设备进行1毫秒TTI的上行信息传输时，通过终端设备发送PRACH的Preamble序列偏移或PUSCH的两个DM-RS的相位差确定频率偏移值。示例的，基站根据随机接入过程中Preamble序列的偏移情况判断终端设备的上行频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，本实施例中的基站，还可以实现如本发明图7所示实施例中基站侧实现的流程。
可选的，接收器1103，还用于接收终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH；第二评估门限包括：终端设备的移动速度，终端设备接收的MCS索 引与MCS索引期望值之差，终端设备接收的MCS索引与终端设备上报CQI对应的MCS索引之差中的一种或多种达到指定阈值；
可选的，处理器1101，还用于根据终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定终端设备的频率偏移值，其中上行信道包括：PRACH和/或PUSCH；根据终端设备的频率偏移值，确定终端设备的历史频率偏移值。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，本实施例中的基站，还可以实现如本发明图8所示实施例中基站侧实现的流程。
本发明实施例通过为终端设备选取MCS索引后，根据预设的MCS索引回退指数对MCS索引进行回退处理，并将回退后的MCS索引指示给终端设备，并通过记录的历史频率偏移值对终端设备进行频率偏移估计，并在频率偏移估计之后解调终端设备根据回退后的MCS索引发送PUSCH。通过预先记录的历史频率偏移值进行频率校准，无需如现有方式中在0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
另外，通过在终端设备进行1毫秒TTI的上行信息传输，基于该1毫秒TTI的PUSCH中的DM-RS，确定终端设备的历史频率偏移值；或者，指示终端设备在两个0.5毫秒TTI中发送PUSCH，基站基于接收到的两个0.5毫秒TTI中发送PUSCH的两个DM-RS，确定终端设备的历史频率偏移值；或者，指示终端设备在1毫秒TTI的PUSCH，基站基于接收到的1毫秒TTI的PUSCH的两个DM-RS，确定终端设备的历史频率偏移值；或者，指示终端设备在0.5毫秒TTI发送PUSCH以及发送SRS，基站基于接收到的0.5毫秒TTI的PUSCH的DM-RS以及SRS，确定终端设备的历史频率偏移值；或者，指示终端设备发送随机接入过程中的上行信道，基站基于接收到的该终端设备发送的随机接入过程中的上行信道中的DM-RS，确定终端设备的历史频率偏移值，或者，在终端设备自身达到了第二评估门限时触发了发送随机接入过程中的上行信道，基站基于该终端设备发送的随机接入过程中的上行信道，确定终端设备的 历史频率偏移值。基站通过上述各种确定历史频率偏移值，无需如现有方式中在0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
实施例7
本发明实施例提供了一种终端设备，参见图12。
其中，该终端设备包括：发送器1201，接收器1202；
接收器1202，用于接收第二调制编码方法MCS索引，其中，第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，第一MCS索引为基站根据终端设备的信道质量和/或终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
发送器1201，用于根据第二MCS索引发送上行信息。
其中，上行信息可以包括：参考信号，探测信号以及物理信道。
其中，本实施例中的终端设备，可以实现如本发明图2所示实施例中的流程。
可选的，接收器1202，还用于接收至少一个第一资源指示信息，第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
可选的，发送器1201，还用于根据第一资源指示信息在两个0.5毫秒TTI中发送PUSCH。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，本实施例中的终端设备，还可以实现如本发明图4所示实施例中终端设备侧实现的流程。
可选的，终端设备还包括：处理器1203，
可选的，接收器1202，还用于接收模式指示信息；模式指示信息用于指示从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模 式；
可选的，处理器1203，用于根据模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式。
需要说明的是，终端设备根据模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式，可以是收到模式指示信息后立即转变为发送1毫秒TTI的上行信息的模式，也可以是经过X个时隙后再转变为发送1毫秒TTI的上行信息的模式，其中X是大于或等于6的正整数。
可选的，发送器1201，还用于发送1毫秒TTI的PUSCH。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，本实施例中的终端设备，还可以实现如本发明图5所示实施例中终端设备侧实现的流程。
可选的，接收器1202，还用于接收至少一个第二资源指示信息，第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
可选的，发送器1201，还用于根据第二资源指示信息在0.5毫秒TTI发送PUSCH以及发送SRS。
其中，0.5毫秒TTI发送的PUSCH的上行频域资源与SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
其中，若m为负整数，则表示PUSCH在SRS所在符号之前发送，若m为正整数，则表示PUSCH在SRS所在符号之后发送。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI。
其中，本实施例中的终端设备，还可以实现如本发明图6所示实施例中终端设备侧实现的流程。
可选的，接收器1202，还用于接收通过PDCCH发送的随机接入过程指示信息；
可选的，发送器1201，还用于根据随机接入过程指示信息发送随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH。
其中，在终端设备触发了随机接入过程后发送PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，本实施例中的终端设备，还可以实现如本发明图7所示实施例中终端设备侧实现的流程。
可选的，终端设备还包括：处理器1203，
可选的，处理器1203，用于检测自身是否达到了第二评估门限；其中，第二评估门限包括：的移动速度，接收的MCS索引与MCS索引期望值之差，终端设备接收的MCS索引与终端设备上报CQI对应的MCS索引之差中的一种或多种达到指定阈值；
可选的，发送器1201，还用于当检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中上行信道包括：PRACH和/或PUSCH。
其中，在终端设备触发了随机接入过程后发送的PRACH和/或PUSCH，会进行1毫秒TTI的上行信息传输。
其中，本实施例中，PUSCH是用来承载所述终端设备的上行数据的物理信道，也可以用来传输所述终端设备的UCI；PRACH是用于终端发起与基站的通信，终端随机接入时发送preamble信息，基站通过PRACH接收并确定接入终端身份并计算该终端的延迟。
其中，本实施例中的终端设备，还可以实现如本发明图8所示实施例中终端设备侧实现的流程。
本发明实施例通过终端设备根据减小后的MCS索引发送上行信息，使得终端设备向基站发送上行信息的速率降低，便于在基站使用历史频率偏移值进行频率校准不准确的情况下，提高上行信息的可靠性，从而提高终端设备发送的上行信息的准确率。
实施例8
本发明实施例提供了一种解调上行信息的系统，参见图13。
其中，系统包括：基站1301和终端设备1302，
基站1301包括：
选取模块，用于根据终端设备的信道质量和/或终端设备的PUSCH接收BLER，为终端设备选取第一MCS索引；
第一确定模块，用于根据MCS索引回退值和第一MCS索引，确定第二MCS索引，其中，MCS索引回退值用于对第一MCS索引进行减小处理从而得到第二MCS索引；
第一发送模块，用于将第二MCS索引发送给终端设备；
校准模块，用于根据终端设备的历史频率偏移值对终端设备的频率进行频率偏移校准，其中，历史频率偏移值为存储的终端设备的频率偏移值；
第一接收模块，用于接收终端设备根据第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH；
终端设备1302包括：
第二接收模块，用于接收第二MCS索引，其中，第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，第一MCS索引为基站根据终端设备的信道质量和/或终端设备的PUSCH接收目标块差错率BLER选取的；
第二发送模块，用于根据第二MCS索引发送上行信息。
其中，本发明实施例中的系统，可以实现如本发明图1和图2所示实施例中基站和终端设备侧实现的流程。
进一步的，本发明实施例中的系统，还可以实现如本发明图3至图8所示实施例中基站和终端设备侧实现的确定终端设备的频率偏移值的流程。
本发明实施例通过为终端设备选取MCS索引后，根据预设的MCS索引回退指数对MCS索引进行减小处理，并将减小后的MCS索引指示给终端设备，并通过记录的历史频率偏移值对终端设备进行频率偏移估计，并在频率偏移估计之后解调终端设备根据减小后的MCS索引发送PUSCH。通过预先记录的历史频率偏移值进行频率校准，无需如现有方式中在每个0.5毫秒TTI中增加DM-RS符号的方式来确定频率偏移值，因此降低了参考信号资源的占用，提高了数据传输效率并降低了参考信号的系统开销。
另外，本发明实施例通过终端设备根据减小后的MCS索引发送上行信息，使得终端设备向基站发送上行信息的速率降低，便于在基站使用历史频率偏移 值进行频率校准不准确的情况下，提高上行信息的可靠性，从而提高终端设备发送的上行信息的准确率。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (40)

  1. 一种解调上行信息的方法，其特征在于，所述方法包括：
    基站根据终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为所述终端设备选取第一调制编码方法MCS索引；
    所述基站根据MCS索引回退值和所述第一MCS索引，确定第二MCS索引，其中，所述MCS索引回退值用于对所述第一MCS索引进行减小处理从而得到所述第二MCS索引；
    所述基站将所述第二MCS索引发送给所述终端设备；
    所述基站根据所述终端设备的历史频率偏移值对所述终端设备的频率进行频率偏移校准，其中，所述历史频率偏移值为所述基站存储的所述终端设备的频率偏移值；
    所述基站接收所述终端设备根据所述第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述终端设备进行1毫秒TTI的上行信息传输后，所述基站根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定所述终端设备的频率偏移值；
    所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述基站检测到所述终端设备达到了第一评估门限后，向所述终端设备发送至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述基站检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的混合自动重传请求HARQ重传次数，所述终端设备的媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的 错误率或错误次数，所述终端设备的MAC包自动重传请求ARQ次数，所述终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
    所述基站接收所述终端设备发送的所述两个0.5毫秒TTI的PUSCH；其中，所述两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
    所述基站根据所述两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据所述两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定所述终端设备的频率偏移值；
    所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  4. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述基站检测到所述终端设备达到了第一评估门限后，向所述终端设备发送模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    其中，所述基站检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述基站接收所述终端设备发送的1毫秒TTI的PUSCH；
    所述基站根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定所述终端设备的频率偏移值；
    所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  5. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述基站检测到所述终端设备达到了第一评估门限后，在与所述终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向所述终端设备发送至 少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；其中，所述基站检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述基站接收所述终端设备发送的所述0.5毫秒TTI的PUSCH，以及所述基站接收所述终端设备发送的SRS；其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的频域资源，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
    所述基站根据所述SRS以及所述0.5毫秒TTI的PUSCH中的DM-RS，或者根据所述SRS和所述0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定所述终端设备的频率偏移值；
    所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  6. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述基站检测到所述终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向所述终端设备发送随机接入过程指示信息；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述基站接收所述终端设备根据所述随机接入过程指示信息发送的所述随机接入过程中的上行信道；
    所述基站根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频率偏移值，其中所述上行信道包括：物理随机接入信道PRACH和/或PUSCH；
    所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  7. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述基站接收所述终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH；所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
    所述基站根据所述终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定所述终端设备的频率偏移值，其中所述上行信道包括：PRACH和/或PUSCH；
    所述基站根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  8. 一种解调上行信息的方法，其特征在于，所述方法包括：
    终端设备接收第二调制编码方法MCS索引，其中，所述第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，所述第一MCS索引为所述基站根据所述终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
    所述终端设备根据所述第二MCS索引发送上行信息。
  9. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
    所述终端设备根据所述第一资源指示信息在所述两个0.5毫秒TTI中发送PUSCH。
  10. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    所述终端设备根据所述模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    所述终端设备发送1毫秒TTI的PUSCH。
  11. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
    所述终端设备根据所述第二资源指示信息在所述0.5毫秒TTI发送PUSCH以及发送SRS；
    其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数。
  12. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收通过PDCCH发送的随机接入过程指示信息；
    所述终端设备根据所述随机接入过程指示信息发送所述随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
  13. 根据权利要求8所述的方法，其特征在于，所述方法还包括：
    所述终端设备检测自身是否达到了第二评估门限；其中，所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
    当所述终端设备检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
  14. 一种基站，其特征在于，所述基站包括：
    选取模块，用于根据终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为所述终端设备选取第一调制编码方法MCS索引；
    第一确定模块，用于根据MCS索引回退值和所述第一MCS索引，确定第二MCS索引，其中，所述MCS索引回退值用于对所述第一MCS索引进行减小处理从而得到所述第二MCS索引；
    第一发送模块，用于将所述第二MCS索引发送给所述终端设备；
    校准模块，用于根据所述终端设备的历史频率偏移值对所述终端设备的频率进行频率偏移校准，其中，所述历史频率偏移值为存储的所述终端设备的频率偏移值；
    第一接收模块，用于接收所述终端设备根据所述第二MCS索引发送的上行信息，并根据频率偏移校准之后的频率解调PUSCH。
  15. 根据权利要求14所述的基站，其特征在于，
    所述第一确定模块，还用于当所述终端设备进行1毫秒TTI的上行信息传输后，根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定所述终端设备的频率偏移值；
    所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  16. 根据权利要求14所述的基站，其特征在于，
    所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的混合自动重传请求HARQ重传次数，所述终端设备的媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的错误率或错误次数，所述终端设备的MAC包自动重传请求ARQ次数，所述终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
    所述第一接收模块，还用于接收所述终端设备发送的所述两个0.5毫秒TTI的PUSCH；其中，所述两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
    所述第一确定模块，还用于根据所述两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据所述两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定所述终端设备的频率偏移值；
    所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  17. 根据权利要求14所述的基站，其特征在于，
    所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述第一接收模块，还用于接收所述终端设备发送的1毫秒TTI的PUSCH；
    所述第一确定模块，还用于根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定所述终端设备的频率偏移值；
    所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  18. 根据权利要求14所述的基站，其特征在于，
    所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，在与所述终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向所述终端设备发送至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5 毫秒TTI的PUSCH的上行频域资源；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述第一接收模块，还用于接收所述终端设备发送的所述0.5毫秒TTI的PUSCH，以及接收所述终端设备发送的SRS；其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的频域资源，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
    所述第一确定模块，还用于根据所述SRS以及所述0.5毫秒TTI的PUSCH中的DM-RS，或者根据所述SRS和所述0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定所述终端设备的频率偏移值；
    所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  19. 根据权利要求14所述的基站，其特征在于，
    所述第一发送模块，还用于当检测到所述终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向所述终端设备发送随机接入过程指示信息；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述第一接收模块，还用于接收所述终端设备根据所述随机接入过程指示信息发送的所述随机接入过程中的上行信道；
    所述第一确定模块，还用于根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频率偏移值，其中所述上行信道包括：物理随机接入信道PRACH和/或PUSCH；
    所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终 端设备的历史频率偏移值。
  20. 根据权利要求14所述的基站，其特征在于，
    所述第一接收模块，还用于接收所述终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH；所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
    所述第一确定模块，还用于根据所述终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定所述终端设备的频率偏移值，其中所述上行信道包括：PRACH和/或PUSCH；
    所述第一确定模块，还用于根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  21. 一种终端设备，其特征在于，所述终端设备包括：
    第二接收模块，用于接收第二调制编码方法MCS索引，其中，所述第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，所述第一MCS索引为所述基站根据所述终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
    第二发送模块，用于根据所述第二MCS索引发送上行信息。
  22. 根据权利要求21所述的终端设备，其特征在于，
    所述第二接收模块，还用于接收至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
    所述第二发送模块，还用于根据所述第一资源指示信息在所述两个0.5毫秒TTI中发送PUSCH。
  23. 根据权利要求21所述的终端设备，其特征在于，所述装置还包括：转变模块，
    所述第二接收模块，还用于接收模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    所述转变模块，用于根据所述模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    所述第二发送模块，还用于发送1毫秒TTI的PUSCH。
  24. 根据权利要求21所述的终端设备，其特征在于，
    所述第二接收模块，还用于接收至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
    所述第二发送模块，还用于根据所述第二资源指示信息在所述0.5毫秒TTI发送PUSCH以及发送SRS；
    其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数。
  25. 根据权利要求21所述的终端设备，其特征在于，
    所述第二接收模块，还用于接收通过PDCCH发送的随机接入过程指示信息；
    所述第二发送模块，还用于根据所述随机接入过程指示信息发送所述随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
  26. 根据权利要求21所述的终端设备，其特征在于，所述装置还包括：检测模块，
    所述检测模块，用于检测自身是否达到了第二评估门限；其中，所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
    所述第二发送模块，还用于当检测到自身达到了第二评估门限后，发送随 机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
  27. 一种基站，其特征在于，所述基站包括：处理器，发送器，接收器；
    所述处理器，用于根据终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER，为所述终端设备选取第一调制编码方法MCS索引；根据MCS索引回退值和所述第一MCS索引，确定第二MCS索引，其中，所述MCS索引回退值用于对所述第一MCS索引进行减小处理从而得到所述第二MCS索引；根据所述终端设备的历史频率偏移值对所述终端设备的频率进行频率偏移校准，其中，所述历史频率偏移值为自身存储的所述终端设备的频率偏移值；根据频率偏移校准之后的频率解调PUSCH；
    所述发送器，用于将所述第二MCS索引发送给所述终端设备；
    所述接收器，用于接收所述终端设备根据所述第二MCS索引发送的上行信息。
  28. 根据权利要求27所述的基站，其特征在于，
    所述处理器，还用于当所述终端设备进行1毫秒TTI的上行信息传输后，根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS，确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  29. 根据权利要求27所述的基站，其特征在于，
    所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的混合自动重传请求HARQ重传次数，所述终端设备的媒体介入控制MAC包/无线链路控制RLC包/传输控制协议TCP包/因特网协议IP包的错误率或错误次数，所述终端设备的MAC包自动重传请求ARQ次数，所述终端设备对应的业务的服务质量QoS中的一种或多种参数达到了指定阈值；
    所述接收器，还用于接收所述终端设备发送的所述两个0.5毫秒TTI的 PUSCH；其中，所述两个0.5毫秒TTI的PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
    所述处理器，还用于根据所述两个0.5毫秒TTI的PUSCH中的两个DM-RS，或者根据所述两个0.5毫秒TTI的PUSCH中相同的PRB索引或相同的RBG索引的频域上的两个DM-RS，确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  30. 根据权利要求27所述的基站，其特征在于，
    所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，向所述终端设备发送模式指示信息；所述模式指示信息用于指示所述终端设备从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；其中，检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述接收器，还用于接收所述终端设备发送的1毫秒TTI的PUSCH；
    所述处理器，还用于根据所述终端设备发送的1毫秒TTI的PUSCH中的DM-RS确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  31. 根据权利要求27所述的基站，其特征在于，
    所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，在与所述终端设备发送信道探测参考信号SRS相邻的预设时间间隔内，向所述终端设备发送至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包 的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述接收器，还用于接收所述终端设备发送的所述0.5毫秒TTI的PUSCH，以及接收所述终端设备发送的SRS；其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的频域资源，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数；
    所述处理器，还用于根据所述SRS以及所述0.5毫秒TTI的PUSCH中的DM-RS，或者根据所述SRS和所述0.5毫秒TTI的PUSCH中相同的频域资源上的DM-RS和SRS，确定所述终端设备的频率偏移值；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  32. 根据权利要求27所述的基站，其特征在于，
    所述发送器，还用于当检测到所述终端设备达到了第一评估门限后，通过物理下行控制信道PDCCH向所述终端设备发送随机接入过程指示信息；其中，所述检测到所述终端设备达到了第一评估门限包括：所述终端设备的移动速度，所述终端设备的MCS变化均值，所述终端设备的MCS方差，所述终端设备的PUSCH接收的BLER，所述终端设备的PUSCH的HARQ重传次数，所述终端设备的MAC包/RLC包/TCP包/IP包的错误率或错误次数，所述终端设备的MAC包ARQ次数，所述终端设备对应的业务的QoS中的一种或多种参数达到了指定阈值；
    所述接收器，还用于接收所述终端设备根据所述随机接入过程指示信息发送的所述随机接入过程中的上行信道；
    所述处理器，还用于根据所述终端设备发送的随机接入过程中的上行信道中的DM-RS和/或前序Preamble序列，确定所述终端设备的频率偏移值，其中所述上行信道包括：物理随机接入信道PRACH和/或PUSCH；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  33. 根据权利要求27所述的基站，其特征在于，
    所述接收器，还用于接收所述终端设备在检测到自身达到了第二评估门限后发送的随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH；所述第二评估门限包括：所述终端设备的移动速度，所述终端设备接 收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
    所述处理器，还用于根据所述终端设备在检测到自身达到了第二评估门限后触发的随机接入过程中的上行信道，确定所述终端设备的频率偏移值，其中所述上行信道包括：PRACH和/或PUSCH；根据所述终端设备的频率偏移值，确定所述终端设备的历史频率偏移值。
  34. 一种终端设备，其特征在于，所述终端设备包括：发送器，接收器；
    所述接收器，用于接收第二调制编码方法MCS索引，其中，所述第二MCS索引为基站根据MCS索引回退值对第一MCS索引进行减小处理得到的，所述第一MCS索引为所述基站根据所述终端设备的信道质量和/或所述终端设备的物理上行共享信道PUSCH接收目标块差错率BLER选取的；
    所述发送器，用于根据所述第二MCS索引发送上行信息。
  35. 根据权利要求34所述的终端设备，其特征在于，
    所述接收器，还用于接收至少一个第一资源指示信息，所述第一资源指示信息用于指示两个0.5毫秒TTI的PUSCH的上行频域资源；其中，所述两个0.5毫秒TTI发送PUSCH的上行频域资源中包含至少一个相同的物理资源块PRB索引或者包含至少一个相同的资源块组RBG索引，所述两个0.5毫秒TTI的时间间隔小于或等于n*0.5毫秒，n为非零的正整数；
    所述发送器，还用于根据所述第一资源指示信息在所述两个0.5毫秒TTI中发送PUSCH。
  36. 根据权利要求34所述的终端设备，其特征在于，所述终端设备还包括：处理器，
    所述接收器，还用于接收模式指示信息；所述模式指示信息用于指示从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    所述处理器，用于根据所述模式指示信息从发送0.5毫秒TTI的上行信息的模式转变到发送1毫秒TTI的上行信息的模式；
    所述发送器，还用于发送1毫秒TTI的PUSCH。
  37. 根据权利要求34所述的终端设备，其特征在于，
    所述接收器，还用于接收至少一个第二资源指示信息，所述第二资源指示信息用于指示0.5毫秒TTI的PUSCH的上行频域资源；
    所述发送器，还用于根据所述第二资源指示信息在所述0.5毫秒TTI发送PUSCH以及发送SRS；
    其中，所述0.5毫秒TTI发送的PUSCH的上行频域资源与所述SRS所在的上行频域资源包含至少一个相同的PRB索引或者包含至少一个相同的RBG索引，所述预设时间间隔小于或等于m*0.5毫秒，m为非零的整数。
  38. 根据权利要求34所述的终端设备，其特征在于，
    所述接收器，还用于接收通过PDCCH发送的随机接入过程指示信息；
    所述发送器，还用于根据所述随机接入过程指示信息发送所述随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
  39. 根据权利要求34所述的终端设备，其特征在于，所述终端设备还包括：处理器，
    所述处理器，用于检测自身是否达到了第二评估门限；其中，所述第二评估门限包括：的移动速度，接收的MCS索引与MCS索引期望值之差，所述终端设备接收的MCS索引与所述终端设备上报信道质量指示CQI对应的MCS索引之差中的一种或多种达到指定阈值；
    所述发送器，还用于当检测到自身达到了第二评估门限后，发送随机接入过程中的上行信道，其中所述上行信道包括：PRACH和/或PUSCH。
  40. 一种解调上行信息的系统，其特征在于，所述系统包括权利要求14-20中任意一项所述的基站和权利要求21-26中任意一项所述的终端设备。
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