CN110049567A - A kind of method and apparatus in narrowband wireless transmission - Google Patents
A kind of method and apparatus in narrowband wireless transmission Download PDFInfo
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- CN110049567A CN110049567A CN201910380899.7A CN201910380899A CN110049567A CN 110049567 A CN110049567 A CN 110049567A CN 201910380899 A CN201910380899 A CN 201910380899A CN 110049567 A CN110049567 A CN 110049567A
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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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- 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
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Abstract
The invention discloses the method and apparatus in a kind of wireless transmission of narrowband.As one embodiment, UE receives downlink signal first, and the downlink signal occupied bandwidth in a time window is less than or equal to 180kHz；Then uplink RS is sent, the uplink RS occupied bandwidth in a time window is less than or equal to 180kHz.The downlink signal indicates first object position, and first object position includes time-domain position of the occupied running time-frequency resource of uplink RS in time window.The downlink signal includes high-level signaling.The uplink RS occupies T time window in the time domain, the uplink RS occupies M narrowband set of symbols in time window, it include Q narrowband symbol in each narrowband set of symbols, the uplink RS occupies L1 subcarrier on each narrowband symbol in M narrowband symbol.The present invention reduces inter-cell interference, improve channel estimating performance, reduce the redundancy of uplink RS.
Description
The application is the divisional application of following original application:
-- the applying date of original application: on December 10th, 2015
-- the application number of original application: 201510917789.1
-- the invention and created name of original application: the method and apparatus in a kind of wireless transmission of narrowband
Technical field
The present invention relates to the transmission plans in wireless communication system, more particularly to the cellular network communication of compatible narrow band transmission
Method and apparatus.
Background technique
In 3GPP (3rd Generation Partner Project, third generation cooperative partner program) RAN (Radio
Access Network, wireless access network) in #69 plenary session, NB-IOT (NarrowBand Internet of Things, it is narrow
Band Internet of Things) it is set up the project.NB-IOT supports 3 kinds of different operational modes (RP-151621):
1. independent (Stand-alone) operation, is disposed on the frequency spectrum that GERAN system uses.
2. protection band is run, disposed on the not used resource block in the protection band of LTE carrier wave
3. being disposed on the resource block on LTE (Long Term Evolution, long term evolution) carrier wave with interior operation
Further, in NB-IOT, UE (User Equipment, user equipment) supports 180kHz in uplink and downlink
RF (Radio Frequency, radio frequency) bandwidth, i.e. a PRB (Physical Resource Block, Physical Resource Block).
In RAN1#83 meeting, ST (Single-Tone, monotone) transmission and MT (multi-Tone, multi-tone) are passed
The defeated uplink transmission mode as NB-IoT is received by 3GPP simultaneously.ST transmission is suitable for the sub-carrier bin of 3.75kHz and 15kHz
Width, MT transmit the subcarrier bandwidth for being only applicable to 15kHz.
Summary of the invention
Uplink reference signals in traditional LTE occupy a SC-FDMA (Single Carrier Frequency
Division Multiplexing Access, single carrier frequency division multiplexing) multiple carrier waves in symbol.The multiple carrier wave uploads
Defeated multiple uplink reference signals avoid (between user and minizone) from interfering by the way of code division multiplexing.
Inventors discovered through research that, since uplink reference signals are only capable of occupying a carrier wave, minizone is dry in ST transmission
Disturbing can not be avoided by way of traditional code division multiplexing, thus the acceptance for influencing uplink reference signals that may be more serious
Energy.
In LTE downlink URS (the specific reference signal of UE specific Reference Signal, UE), mutiple antennas
Port on one sub-carrier multiple OFDM (Orthogonal Frequency Division Multiplexing, it is orthogonal
Frequency division multiplexing) it is multiplexed using the mode of OCC (Orthogonal Covering Code, orthogonal covering codes) between symbol.Invention
People passes through research it has furthermore been found that can not fully meet the demand of NB-IOT similar to the scheme of downlink URS, the reason is that: in order to
Overcome inter-cell interference, required RS sequence may be longer, and longer RS sequence for ST transmission for mean it is longer
Transmission time, the characteristic of channel may change in the longer transmission time.In addition, longer RS sequence may be brought
The decline of efficiency of transmission.
The present invention, aiming to the above problems, provides solutions.It should be noted that in the absence of conflict, the application
UE (User Equipment, user equipment) in embodiment and embodiment in feature can be applied in base station, it is on the contrary
?.Further, in the absence of conflict, the feature in embodiments herein and embodiment can arbitrarily mutual group
It closes.
The invention discloses a kind of methods in UE for supporting narrow band communication, wherein includes the following steps:
Step A. receives downlink signal, and the downlink signal occupied bandwidth in a time window is less than or waits
In 180kHz
Step B. sends uplink RS, and the uplink RS occupied bandwidth in a time window is less than or equal to
180kHz。
Wherein, the downlink signal indicates first object position, and first object position includes the uplink RS occupied
Time-domain position of the running time-frequency resource in time window.The downlink signal includes in { characteristic sequence, high-level signaling, physical layer signaling }
At least one of.The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband symbol in time window
Number group includes Q narrowband symbol, each narrowband of the uplink RS in M narrowband symbol in each narrowband set of symbols
L1 subcarrier is occupied on symbol.The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively.
The essence of the above method is that uplink RS time location in time window is variable.In traditional Cellular Networks, reference
Position of the signal in time window is usually fixed, because the variable position RS may result in the upper of channel estimation complexity
It rises, without bringing apparent superiority.
As one embodiment, the T is greater than 1, and the uplink RS is shared in each time window of the T time window
The position of running time-frequency resource is identical.
Above-described embodiment can reduce to the greatest extent due to the position RS it is uncertain caused by channel estimation complexity
Rise.
As one embodiment, the uplink RS occupies identical L1 subcarrier, the Q in the narrowband set of symbols
Greater than 1.
As one embodiment, the time window includes P narrowband symbol in the time domain, and the P is greater than or equal to
The positive integer of the M.
As one embodiment, the T is equal to 1.
As one embodiment, when the uplink RS is occupied at least two time windows of the T time window
The position of frequency resource is different.
As one embodiment, the T time window is continuous.
As one embodiment, the T time window is discontinuous.
As one embodiment, the characteristic sequence include { Zadoff-Chu sequence, pseudo-random sequence } at least it
One.
As one embodiment, the narrowband symbol is SC-FDMA symbol.
As one embodiment, the narrowband symbol is OFDM symbol.
As one embodiment, the narrowband symbol is the modulation symbol for occupying a subcarrier.
As one embodiment, the M is 1.
As one embodiment, the L1 is 1.
As one embodiment, the L1 is less than or equal to 12, and the bandwidth of the subcarrier is 15kHz.
As one embodiment, the L1 is less than or equal to 48, and the bandwidth of the subcarrier is 3.75kHz.
As one embodiment, the time window is LTE time slot (Time Slot), and the bandwidth of the subcarrier is
15kHz。
As one embodiment, the duration of the time window is 2 milliseconds, and the bandwidth of the subcarrier is 3.75kHz.
As one embodiment, the duration of the time window is no more than 1 millisecond, and the bandwidth of the subcarrier is
15kHz。
As one embodiment, the duration of the time window is no more than 4 milliseconds, and the bandwidth of the subcarrier is
3.75kHz。
As one embodiment, the time window is LTE subframe.
As one embodiment, the uplink RS is that (Sounding Reference Signal, listens to reference to NB-SRS
Signal).
As one embodiment, Q narrowband symbol in the narrowband set of symbols is continuous in the time domain.
As one embodiment, any two narrowband set of symbols is discrete in the time domain in M narrowband set of symbols
(i.e. discontinuous).
As one embodiment, the characteristic sequence indicates the mark of the serving cell of the UE.Implement as a son
Example, the mark of the serving cell is PCI (Physical Cell ID, Physical Cell Identifier).
As one embodiment, the high-level signaling is SIB (System Information Block, system information
Block).
As one embodiment, the high-level signaling is broadcast signaling.
In above three embodiments, system equipment can configure the time-domain position of different uplink RS for each cell, with
Avoid inter-cell interference.
As one embodiment, Q narrowband symbol is continuous.
As one embodiment, Q narrowband symbol is discrete.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B1. sends uplink signal.
Wherein, the uplink signal and the uplink RS are sent by identical antenna port, and the uplink signal is in time domain
Upper to occupy the T time window, the uplink signal occupied bandwidth in time window is less than or equal to 180kHz.
The essence of above-mentioned aspect is that the uplink RS is the DMRS (Demodulation of the uplink signal
Reference Signal, demodulated reference signal).
As one embodiment, the uplink signal occupies the narrowband symbol except reserved narrowband symbol in time window,
The reserved narrowband symbol is the occupied narrowband symbol of the uplink RS.
As one embodiment, the uplink signal occupies L1 subcarrier on narrowband symbol.
As one embodiment, the uplink signal includes UCI (Uplink Control Information, uplink control
Information processed), the UCI includes in { CSI (Channel Status Information, channel state information), HARQ-ACK }
At least one of.
As one embodiment, the uplink signal includes upstream data, and the carrying transmission channel of the upstream data is
UL-SCH (Uplink Shared Channel, Uplink Shared Channel).
As one embodiment, the carrying logic channel of the upstream data includes { CCCH (Common Control
Channel, common control channel), DCCH (Dedicated Control Channel, dedicated control channel), DTCH
At least one of (Dedicated Traffic Channel, Dedicated Traffic Channel) }.
As one embodiment, the downlink signal indicates the second target position, and the second target position includes the uplink
{ time-domain position, frequency domain position } at least one of of the signal in time window.
As one embodiment, the quantity for the subcarrier that the uplink signal occupies in time window is less than the uplink RS
The quantity of occupied subcarrier in window at the same time.
In traditional wireless communication, DMRS is typically embedded into the occupied frequency domain resource of uplink signal, with more accurate
Reflection uplink signal wireless channel experienced characteristic.And in above-described embodiment, at least part uplink RS is located at described
Except the occupied frequency domain resource of uplink signal, has unobviousness.The benefit of above-described embodiment is to reduce neighboring community
In uplink RS conflict probability.Further, the above method can reduce the redundancy (Overhead) of uplink RS, i.e., multiple sons
The uplink signal of ST transmission on carrier wave can share the uplink RS on the same subcarrier.
As one embodiment, if the UE executes ST transmission in the T time window, the uplink signal when
Between in window occupied subcarrier be first kind subcarrier；If the UE executes MT transmission in the T time window, described
Uplink signal in time window in occupied subcarrier include { first kind subcarrier, the second class subcarrier } at least it
One.Wherein, first kind subcarrier includes that at least one is used for transmission the resource units of the uplink RS, the second class in time window
The wireless signal that resource units of the subcarrier in time window are used to carry except the uplink RS (does not include being used for transmission institute
State the resource units of uplink RS).
The advantages of above-described embodiment is the frequency division multiplexing for realizing ST transmission and MT transmission on a narrowband, and is saved
The redundancy of uplink RS (not including uplink RS on the second class subcarrier).In addition, what above-described embodiment ensured to transmit for ST
It is not in that (if the UE for executing ST transmission occupies the second class subcarrier, the second class carries idling-resource unit on subcarrier
Wave will appear idling-resource unit in the occupied narrowband symbol of uplink RS, reduce efficiency of transmission).
Specifically, according to an aspect of the present invention, which is characterized in that the downlink signal includes at least one of:
First information cell index
- the second information flag bit bit
Index of the third information first object position in K position candidate.
Wherein, the K position candidate is default determination, or is configurable.The K is greater than 1 positive integer.
As one embodiment, the downlink signal only includes the third in { first information, the second information, third information }
Information.
As one embodiment, the downlink signal includes given information and the second information.The flag bit bit is
When first state, index of the first object position in the K position candidate is indicated by the given information；The flag bit
When bit is the second state, first object position is fixed (not changing with the given information).The given letter
Breath is one in { first information, third information }.
As one embodiment, the first information is indicated by the characteristic sequence.
As one embodiment, at least one of described high-level signaling instruction { the second information, third information }.
As one embodiment, at least one of described physical layer signaling instruction { the second information, third information }.
As one embodiment, the downlink signal includes the first information, time domain position of the uplink RS in time window
The index set in the K position candidate takes the remainder K equal to the cell index.
As one embodiment, K, M, the product of Q three is less than or equal to the number of the narrowband symbol in a time window
Amount.
Specifically, according to an aspect of the present invention, which is characterized in that the uplink RS is in the T time window
L2 subcarrier is occupied in each time window, the L2 is greater than the positive integer of the L1.First object position includes on described
Frequency domain position of the occupied running time-frequency resource of row RS in time window.
The essence of the above method is different narrow tape symbol of the occupied subcarrier of uplink RS in a time window
Upper jump (Hopping).
As one embodiment, the uplink RS occupies identical L1 subcarrier in the narrowband set of symbols.
As one embodiment, the L1 is 1, and the L2 is the M.
As one embodiment, the L1 is 1, and the L2 is 2.
As one embodiment, K, M, the product of Q three is greater than the quantity of the narrowband symbol in a time window.
As one embodiment, first object position further includes the occupied running time-frequency resource of uplink RS in time window
Frequency domain position, i.e. the occupied running time-frequency resource in time window of uplink RS described in first object position instruction.
Specifically, according to an aspect of the present invention, which is characterized in that the uplink signal is in the T time window
Each time window in occupy L1 subcarrier.
As one embodiment, the uplink signal occupies identical subcarrier on the narrowband symbol in time window.
Specifically, according to an aspect of the present invention, which is characterized in that at least exist a target sub-carriers, it is described on
Row RS occupies the target sub-carriers in given time window, and the uplink signal does not occupy in the given time window
The target sub-carriers.
Specifically, according to an aspect of the present invention, which is characterized in that transmission function of the uplink RS on resource units
Rate is greater than transmission power of the uplink signal on resource units.The resource units occupy a subcarrier on frequency domain,
A narrowband symbol is occupied in the time domain.
As one embodiment of above-mentioned aspect, the UE executes MT transmission in the T time window.
As one embodiment, the resource units are RE (Resource Element, resource particles).
The invention discloses a kind of methods in base station for supporting narrow band communication, wherein includes the following steps:
Step A. sends downlink signal, and the downlink signal occupied bandwidth in a time window is less than or waits
In 180kHz
Step B. receives uplink RS, and the uplink RS occupied bandwidth in a time window is less than or equal to
180kHz。
Wherein, the downlink signal indicates first object position, and first object position includes the uplink RS occupied
Time-domain position of the running time-frequency resource in time window.The downlink signal includes in { characteristic sequence, high-level signaling, physical layer signaling }
At least one of.The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband symbol in time window
Number group includes Q narrowband symbol, each narrowband of the uplink RS in M narrowband symbol in each narrowband set of symbols
L1 subcarrier is occupied on symbol.The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively.
Specifically, according to an aspect of the present invention, which is characterized in that the step B further includes following steps:
Step B1. receives uplink signal.
Wherein, the uplink signal and the uplink RS are sent by identical antenna port, and the uplink signal is in time domain
Upper to occupy the T time window, the uplink signal occupied bandwidth in time window is less than or equal to 180kHz.
As one embodiment, the base station determines up channel parameter according to the uplink RS first, then according to institute
It states up channel parameter and channel equalization is executed to the uplink signal.
As one embodiment, if the transmission UE of the uplink signal executes ST transmission, institute in the T time window
Stating uplink signal occupied subcarrier in time window is first kind subcarrier；If the transmission UE of the uplink signal is in institute
It states and executes MT transmission in T time window, the uplink signal includes that { first kind carries in occupied subcarrier in time window
At least one of wave, the second class subcarrier }.Wherein, first kind subcarrier is used for transmission in time window including at least one
The resource units of the uplink RS, resource units of the second class subcarrier in time window are for carrying except the uplink RS
Wireless signal (not including the resource units for being used for transmission the uplink RS).
Specifically, according to an aspect of the present invention, which is characterized in that the downlink signal includes at least one of:
First information cell index
- the second information flag bit bit
Index of the third information first object position in K position candidate.
Wherein, the K position candidate is default determination, or is configurable.The K is greater than 1 positive integer.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A1. sends the first feeding back signaling, and the first feeding back signaling indicates first object position.
As one embodiment, the first feeding back signaling includes at least one of { the second information, third information }.
As one embodiment, the first feeding back signaling is transmitted by X2 interface.
As one embodiment, the first feeding back signaling is transmitted by S1 interface.
As one embodiment, the first feeding back signaling is transmitted by the optical fiber being directly connected to.
Specifically, according to an aspect of the present invention, which is characterized in that the step A further includes following steps:
Step A2. receives the second feeding back signaling, and the second feeding back signaling indicates third target position.
Wherein, the counterpart that third target position is first object position in given cell, the given cell be by
What the system equipment except the base station was safeguarded.
As one embodiment, the second feeding back signaling is transmitted by X2 interface.
As one embodiment, the sender of the second feeding back signaling is the system equipment.
As one embodiment, the second feeding back signaling is transmitted by S1 interface.
As one embodiment, the second feeding back signaling is transmitted by the optical fiber being directly connected to.
Specifically, according to an aspect of the present invention, which is characterized in that the uplink RS is in the T time window
L2 subcarrier is occupied in each time window, the L2 is greater than the positive integer of the L1.First object position includes on described
Frequency domain position of the occupied running time-frequency resource of row RS in time window.
As one embodiment of above-mentioned aspect, the L1 is 1, and the L2 is the M.
Specifically, according to an aspect of the present invention, which is characterized in that the uplink signal is in the T time window
Each time window in occupy L1 subcarrier.
As one embodiment of above-mentioned aspect, the uplink signal occupies identical on the narrowband symbol in time window
Subcarrier.
Specifically, according to an aspect of the present invention, which is characterized in that at least exist a target sub-carriers, it is described on
Row RS occupies the target sub-carriers in given time window, and the uplink signal does not occupy in the given time window
The target sub-carriers.
Specifically, according to an aspect of the present invention, which is characterized in that transmission function of the uplink RS on resource units
Rate is greater than transmission power of the uplink signal on resource units.The resource units occupy a subcarrier on frequency domain,
A narrowband symbol is occupied in the time domain.
The invention discloses a kind of user equipmenies for supporting narrow band communication, wherein including following module:
First module: for receiving downlink signal, the downlink signal occupied bandwidth in a time window is less than
Or it is equal to 180kHz
Second module: for sending uplink RS, the uplink RS occupied bandwidth in a time window be less than or
Equal to 180kHz.
Wherein, the downlink signal indicates first object position, and first object position includes the uplink RS occupied
Time-domain position of the running time-frequency resource in time window.The downlink signal includes in { characteristic sequence, high-level signaling, physical layer signaling }
At least one of.The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband symbol in time window
Number group includes Q narrowband symbol, each narrowband of the uplink RS in M narrowband symbol in each narrowband set of symbols
L1 subcarrier is occupied on symbol.The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively.
The invention discloses a kind of base station equipments for supporting narrow band communication, wherein including following module:
First module: for sending downlink signal, the downlink signal occupied bandwidth in a time window is less than
Or it is equal to 180kHz
Second module: for receiving uplink RS, the uplink RS occupied bandwidth in a time window be less than or
Equal to 180kHz.
Wherein, the downlink signal indicates first object position, and first object position includes the uplink RS occupied
Time-domain position of the running time-frequency resource in time window.The downlink signal includes in { characteristic sequence, high-level signaling, physical layer signaling }
At least one of.The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband symbol in time window
Number group includes Q narrowband symbol, each narrowband of the uplink RS in M narrowband symbol in each narrowband set of symbols
L1 subcarrier is occupied on symbol.The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively.
Compared to existing public technology, the present invention has following technical advantage:
- reduces the inter-cell interference in narrow band communication, improves the performance of channel estimation
- reduces the occupied redundancy of uplink RS, improves efficiency of transmission.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the flow chart that uplink according to an embodiment of the invention is sent；
Fig. 2 shows cooperation between base stations according to an embodiment of the invention to avoid the flow chart of inter-cell interference；
Fig. 3 shows the schematic diagram of the K position candidate of uplink RS in ST transmission according to an embodiment of the invention；
Fig. 4 shows the candidate narrowband symbol of K for capable of being used for uplink RS in narrowband according to an embodiment of the invention
The schematic diagram of number group；
Fig. 5 shows uplink RS within a time window in ST according to an embodiment of the invention transmission and upper
The schematic diagram of row signal；
Fig. 6 show ST according to still another embodiment of the invention transmission in a time window within uplink RS and
The schematic diagram of uplink signal；
Fig. 7 shows uplink RS within a time window in MT according to an embodiment of the invention transmission and upper
The schematic diagram of row signal；
Fig. 8 show MT according to still another embodiment of the invention transmission in a time window within uplink RS and
The schematic diagram of uplink signal；
Fig. 9 shows the transmission of ST according to still another embodiment of the invention and shows with what MT transmission was multiplexed in a narrowband
It is intended to；
Figure 10 shows showing for the mapping of uplink RS modulation symbol according to an embodiment of the invention to resource units
It is intended to；
Figure 11 shows the structural block diagram of the processing unit in UE according to an embodiment of the invention；
Figure 12 shows the structural block diagram of the processing unit in base station according to an embodiment of the invention；
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with attached drawing, it should be noted that do not rushing
In the case where prominent, the feature in embodiments herein and embodiment can be arbitrarily combined with each other.
Embodiment 1
Embodiment 1 illustrates the flow chart of uplink transmission, as shown in Fig. 1.In attached drawing 1, base station N1 is the service of UE U2
The maintenance base station of cell, the step of identifying in box F1 are optional.
Base station N1 sends downlink signal in step s101, receives uplink RS in step s 102, connects in step s 103
Receive uplink signal.
UE U2 receives downlink signal in step s 201, and uplink RS is sent in step S202, is sent in step S203
Uplink signal.
In embodiment 1, the downlink signal occupied bandwidth in a time window is less than or equal to 180kHz, institute
State downlink signal instruction first object position.The downlink signal includes in { characteristic sequence, high-level signaling, physical layer signaling }
At least one.The uplink RS occupied bandwidth in a time window is less than or equal to 180kHz, and the uplink RS exists
T time window is occupied in time domain, the uplink RS occupies M narrowband set of symbols in time window, wraps in each narrowband set of symbols
Q narrowband symbol is included, the uplink RS occupies L1 subcarrier on each narrowband symbol in M narrowband symbol.Institute
The basic thread that time window is time-domain is stated, { L1, T, M, Q } is positive integer respectively.The uplink signal and the uplink
RS is sent by identical antenna port, and the uplink signal occupies the T time window in the time domain, the uplink signal when
Between in window occupied bandwidth be less than or equal to 180kHz.First object position includes the occupied time-frequency money of the uplink RS
At least time-domain position of the source in { time-domain position, the frequency domain position } in time window.
As the sub- embodiment 1 of embodiment 1, the downlink signal includes high-level signaling, and the high-level signaling indicates third
Information, third information are index of the first object position in K position candidate.
As the sub- embodiment 2 of embodiment 1, the downlink signal includes high-level signaling, the high-level signaling instruction second
Information and given information, the second information are flag bit bits, and when the flag bit bit is first state, first object position exists
Index in K position candidate is indicated by the given information；When the flag bit bit is the second state, first object position
It is fixed (not changing with the given information).The given information is third information or the first information, first
Information is cell index.
As the sub- embodiment 3 of embodiment 1, the downlink signal includes { characteristic sequence, high-level signaling }, the feature sequence
The column instruction first information, index of the first object position in K position candidate are remainder of the cell index divided by K.It is described small
Area's index is indicated by the first information.
As the sub- embodiment 4 of embodiment 1, if UE U2 currently executes ST transmission, the uplink signal is in time window
An occupied subcarrier is first kind subcarrier；If UE U2 currently executes MT transmission, the uplink signal is in time window
Include in interior occupied subcarrier at least one of { first kind subcarrier, second class subcarrier }.Wherein, first kind carries
Wave includes that at least one is used for transmission the resource units of the uplink RS in time window, and the second class subcarrier is in time window
The wireless signal that resource units are used to carry except the uplink RS (does not include the resource list for being used for transmission the uplink RS
Position).
As the sub- embodiment 5 of embodiment 1, the M is 2, and the Q is 4.
Embodiment 2
Embodiment 2 illustrates cooperation between base stations to avoid the flow chart of inter-cell interference, as shown in Fig. 2.In attached drawing 2,
The step of identifying in box F2 is optional step.
Base station N1 receives the second feeding back signaling in step s 11, sends the first feeding back signaling in step s 12.
Base station N3 sends the second feeding back signaling in step S31, receives the first feeding back signaling in step s 32.
In embodiment 2, the first feeding back signaling indicates the first object position in the present invention, the instruction of the second feeding back signaling
Third target position.Third target position is counterpart of the first object position in given cell, that is, is indicated in given cell
At least time-domain position of the occupied running time-frequency resource of uplink RS in { time-domain position, frequency domain position } in time window, it is described
Given cell is safeguarded by base station N3.
As the sub- embodiment 1 of embodiment 2, the first feeding back signaling and the second feeding back signaling are transmitted by X2 interface respectively.
As the sub- embodiment 2 of embodiment 2, base station N1 is determined in the present invention according to the second feeding back signaling in step s 11
First object position.
Embodiment 3
Embodiment 3 illustrates the schematic diagram of the K position candidate of uplink RS in ST transmission, as shown in Fig. 3.
In attached drawing 3, one is filled with digital or letter K grid and represents a narrowband set of symbols on one sub-carrier
Q resource units.
In embodiment 3, ST is transmitted, the downlink signal in the present invention indicates the first mesh from K position candidate
Cursor position, first object position are time-domain position of the occupied running time-frequency resource of uplink RS in time window.
As the sub- embodiment 1 of embodiment 3, uplink RS occupies 1 narrowband set of symbols in time window, i.e., in the present invention
The M is 1.The acceptance of the bid of attached drawing 3 knows resource units representated by the grid of same numbers and is belonging respectively to two time windows.
As the sub- embodiment 2 of embodiment 3, uplink RS occupies 2 narrowband set of symbols in time window, i.e., in the present invention
The M is 2.The acceptance of the bid of attached drawing 3 knows resource units representated by the grid of same numbers and belongs to window at the same time.
As the sub- embodiment 3 of embodiment 3, the Q is greater than 1.
As the sub- embodiment 4 of embodiment 3, the K position candidate is that default determination (does not need explicit configuration
).
As the sub- embodiment 5 of embodiment 3, the K position candidate is explicitly configured by downlink high-level signaling.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of the candidate narrowband set of symbols of K for capable of being used for uplink RS in narrowband, such as attached drawing 4
It is shown.In attached drawing 4, one is filled with the Q narrowband that digital or letter K perpendicular grid represents in a narrowband set of symbols and accords with
Number.
In embodiment 4, uplink RS occupies 1 narrowband set of symbols in time window, and 1 narrowband set of symbols is K time
Select one in narrowband set of symbols.Described K candidate narrowband set of symbols distinguishes stuffing digit 1,2 ..., K.
As the sub- embodiment 1 of embodiment 4, the time window is LTE time slot.
As the sub- embodiment 2 of embodiment 4, the uplink RS is on each narrowband symbol in M narrowband symbol
L1 subcarrier is occupied, the uplink RS occupies L2 subcarrier, the L2 in each time window in the T time window
It is greater than the positive integer of the L1.
As the sub- embodiment 3 of embodiment 4, at least there are a target sub-carriers, the uplink RS is in given time window
In occupy the target sub-carriers, the uplink signal is in the given time window without occupying the target sub-carriers.
Embodiment 5
Embodiment 5 illustrates the schematic diagram of uplink RS and uplink signal within a time window in ST transmission, such as attached
Shown in Fig. 5.In attached drawing 5, the occupied running time-frequency resource of uplink signal is identified by bold box, the occupied running time-frequency resource of uplink RS by
Oblique line mark.
The quantity of the subcarrier occupied in mono- time window of uplink RS is greater than what uplink RS was occupied on a narrowband symbol
The quantity of subcarrier, i.e. uplink RS are jumped on the subcarrier in a time window.
In embodiment 5, since ST transmission can only occupy a subcarrier on a narrowband symbol, work as uplink RS institute
Corresponding money when the occupied subcarrier difference of the subcarrier of occupancy and uplink signal, on the occupied subcarrier of uplink signal
Source unit is idle.
Embodiment 6
Embodiment 6 illustrates another signal of uplink RS and uplink signal within a time window in ST transmission
Figure, as shown in Fig. 6.In attached drawing 6, the occupied running time-frequency resource of uplink signal is identified by bold box, when uplink RS is occupied
Frequency resource is identified by oblique line.
The subcarrier occupied in mono- time window of uplink RS is the subcarrier that uplink RS is occupied on a narrowband symbol, i.e.,
Uplink RS does not jump on the subcarrier in a time window.The son that the subcarrier and uplink signal that uplink RS is occupied occupy carries
Wave is different.
In embodiment 6, since ST transmission can only occupy a subcarrier on a narrowband symbol, work as uplink RS institute
Corresponding money when the occupied subcarrier difference of the subcarrier of occupancy and uplink signal, on the occupied subcarrier of uplink signal
Source unit is idle.
Embodiment 7
Embodiment 7 illustrates the schematic diagram of uplink RS and uplink signal within a time window in MT transmission, such as attached
Shown in Fig. 7.In attached drawing 7, the running time-frequency resource of bold box mark is used for transmission uplink signal, and the running time-frequency resource of oblique line mark is for passing
Defeated uplink RS.
The quantity of the subcarrier occupied in mono- time window of uplink RS is greater than what uplink RS was occupied on a narrowband symbol
The quantity of subcarrier, i.e. uplink RS are jumped on the subcarrier in a time window.
In embodiment 7, since MT transmission can account for multiple subcarriers, shared by uplink signal on a narrowband symbol
Even if there is no idle resource units-when the occupied subcarrier of uplink RS and the occupied son of uplink signal on subcarrier
When carrier wave difference.
Embodiment 8
Embodiment 8 illustrates another signal of uplink RS and uplink signal within a time window in MT transmission
Figure, as shown in Fig. 8.In attached drawing 8, the occupied running time-frequency resource of uplink signal is identified by bold box, when uplink RS is occupied
Frequency resource is identified by oblique line.
The subcarrier occupied in mono- time window of uplink RS is the subcarrier that uplink RS is occupied on a narrowband symbol, i.e.,
Uplink RS does not jump on the subcarrier in a time window.The son that the subcarrier and uplink signal that uplink RS is occupied occupy carries
Wave is different.
In embodiment 8, since MT transmission can account for multiple subcarriers, shared by uplink signal on a narrowband symbol
Even if there is no idle resource units-when the occupied subcarrier of uplink RS and the occupied son of uplink signal on subcarrier
When carrier wave difference.
Embodiment 9
Embodiment 9 illustrates ST transmission and MT transmits the schematic diagram being multiplexed in a narrowband, as shown in Fig. 9.Attached drawing 9
In, backslash identifies first kind subcarrier, and blank rectangular case marker knows the second class subcarrier, and cross spider identifies an optional narrowband
Symbol.
In embodiment 9, the bandwidth of a subcarrier is 15kHz (kHz), includes 12 continuous sons in a narrowband
Carrier wave-sub-carrier indices are from 0 to 11.Its sub-carriers { 0,5,10 } is first kind subcarrier, other subcarriers are the second class
Carrier wave.First kind subcarrier includes at least RE (Resource Element, the money for being used for transmission uplink RS in time window
Source particle), the second class subcarrier does not include the RE for being used for transmission uplink RS in time window.
In embodiment 9, a time window includes the X narrowband symbols that can be used for narrow band transmission, or available including X-1
SRS (Sounding Reference Signal, interception reference signal) is kept in the narrowband symbol of narrow band transmission and 1
Narrowband symbol.The X is 14- for common CP (Cyclic Prefix, extended cyclic prefix) or 12- is for expanding
For exhibition CP.
As the sub- embodiment 1 of embodiment 9, ST transmission (in uplink RS and uplink signal) can only be by first kind subcarrier
Carrying.
As the sub- embodiment 2 of embodiment 9, MT transmission (in uplink RS and uplink signal) can by first kind subcarrier with
And second class subcarrier carrying.
Embodiment 10
Embodiment 10 illustrates the schematic diagram of the mapping of uplink RS modulation symbol to resource units, as shown in Fig. 10.It is attached
In Figure 10, a grid represents a resource units.
In embodiment 10, subcarrier 1,2 ..., L is the first kind subcarrier belonged in the same given narrowband.Subcarrier l
RS modulation symbol on Q resource units in a narrowband set of symbols is respectively al·b1, al·b2..., al·bQ.Its
In, l=1,2 ..., L.
As the sub- embodiment 1 of embodiment 10, fisrt feature sequence b1b2…bQIt is UE specific.The sub- embodiment it is excellent
Point is: system can distribute mutually orthogonal fisrt feature sequence for the UE of multiple frequency division multiplexings on the given narrowband to keep away
Exempt from the interference of uplink RS.
As the sub- embodiment 2 of embodiment 10, second feature sequence a1a2…aLIt is that cell is specific.The sub- embodiment
Advantage is: reducing the uplink RS interference in MT transmission.
As the sub- embodiment 3 of embodiment 10, second feature sequence a1a2…aLIt is fixed.
Sub- embodiment 4, a as embodiment 10l, bqIt is plural number respectively.Wherein, q=1,2 ..., Q.
As the sub- embodiment 5 of embodiment 10, Q 4, L 3.
Embodiment 11
Embodiment 11 illustrates the structural block diagram of the processing unit in a UE, as shown in Fig. 11.In attached drawing 11, at UE
Reason device 200 is mainly made of the first module 201 and the second module 202.
For first module 201 for receiving downlink signal, the downlink signal occupied bandwidth in a time window is small
In or equal to 180kHz.Second module 202 is for sending uplink RS and uplink signal, and the uplink RS is in a time window
Occupied bandwidth is less than or equal to 180kHz.
In embodiment 11, the downlink signal indicates first object position, and first object position includes the uplink RS institute
Time-domain position of the running time-frequency resource of occupancy in time window.The downlink signal includes { characteristic sequence, high-level signaling, physical layer
At least one of signaling }.The uplink RS occupies T time window in the time domain, and the uplink RS occupies M in time window
Narrowband set of symbols includes Q continuous narrowband symbols in each narrowband set of symbols, and the uplink RS is in M narrowband symbol
In each narrowband symbol on occupy L1 subcarrier.The time window is the basic thread of time-domain, { L1, T, M, Q }
It is positive integer respectively.The uplink signal and the uplink RS are sent by identical antenna port, and the uplink signal is in time domain
Upper to occupy the T time window, the uplink signal occupied bandwidth in time window is less than or equal to 180kHz.It is described
Downlink signal includes at least one of:
First information cell index
- the second information flag bit bit
Index of the third information first object position in K position candidate.
Wherein, the K position candidate is default determination, or is configurable.The K is greater than 1 positive integer,
The Q is greater than 1.
As the sub- embodiment 1 of embodiment 11, if the UE executes ST transmission in the T time window, it is described on
Row signal occupied subcarrier in time window is first kind subcarrier；If the UE is executed in the T time window
MT transmission, the uplink signal include { first kind subcarrier, the second class subcarrier } in occupied subcarrier in time window
At least one of.Wherein, first kind subcarrier includes that at least one is used for transmission the resource of the uplink RS in time window
Unit, resource units of the second class subcarrier in time window are used to carry the wireless signal except the uplink RS.
As the sub- embodiment 2 of embodiment 11, at least there are a target sub-carriers, the uplink RS is in given time window
In occupy the target sub-carriers, the uplink signal is in the given time window without occupying the target sub-carriers.
As the sub- embodiment 3 of embodiment 11, transmission power of the uplink RS on resource units is greater than the uplink
Transmission power of the signal on resource units.The resource units occupy a subcarrier on frequency domain, occupy one in the time domain
A narrowband symbol.
As the sub- embodiment 4 of embodiment 11, first object position includes that the occupied running time-frequency resource of uplink RS exists
Frequency domain position in time window.The physical layer signaling indicates the frequency domain position.
Embodiment 12
Embodiment 12 illustrates the structural block diagram of the processing unit in a base station, as shown in Fig. 12.In attached drawing 12, base
Processing unit of standing 300 is mainly made of the first module 301 and the second module 302.
For first module 301 for sending downlink signal, the downlink signal occupied bandwidth in a time window is small
In or equal to 180kHz.Second module 302 is for receiving uplink RS and uplink signal, and the uplink RS is in a time window
Occupied bandwidth is less than or equal to 180kHz.
In embodiment 12, the downlink signal indicates first object position, and first object position includes the uplink RS institute
At least time-domain position of the running time-frequency resource of occupancy in { time-domain position, the frequency domain position } in time window.The downlink signal packet
Include high-level signaling.The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband symbol in time window
Number group includes Q narrowband symbol, each narrowband of the uplink RS in M narrowband symbol in each narrowband set of symbols
L1 subcarrier is occupied on symbol.The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively.
The uplink signal and the uplink RS are sent by identical antenna port, and the uplink signal occupies the T in the time domain
Time window, the uplink signal occupied bandwidth in time window are less than or equal to 180kHz.
As the sub- embodiment 1 of embodiment 12, the first module 301 is also used to send the first feeding back signaling, the first passback letter
Enable instruction first object position.
As the sub- embodiment 2 of embodiment 12, the first module 301 is also used to receive the second feeding back signaling, the second passback letter
Enable instruction third target position.Wherein, third target position is counterpart of the first object position in given cell, described to give
Determining cell is safeguarded by the system equipment except the base station.
As the sub- embodiment 3 of embodiment 12, the L1 is 1.
Those of ordinary skill in the art will appreciate that all or part of the steps in the above method can be referred to by program
Related hardware is enabled to complete, described program can store in computer readable storage medium, such as read-only memory, hard disk or light
Disk etc..Optionally, one or more integrated circuit can be used also to realize in all or part of the steps of above-described embodiment.Phase
It answers, each modular unit in above-described embodiment, can be realized using example, in hardware, it can also be by the form of software function module
It realizes, the application is not limited to the combination of the software and hardware of any particular form.UE or terminal in the present invention include but unlimited
In mobile phone, tablet computer, notebook, vehicular communication equipment, wireless sensor, the wireless telecom equipments such as card of surfing Internet.In the present invention
Narrowband terminal include but is not limited to internet-of-things terminal, RFID terminal, NB-IOT terminal, MTC (Machine Type
Communication, machine type communication) terminal, eMTC (enhanced MTC, the MTC of enhancing) terminal, data card, online
Card, vehicular communication equipment, inexpensive mobile phone, the wireless telecom equipments such as inexpensive tablet computer.Base station in the present invention is
Equipment of uniting includes but is not limited to macrocell base stations, microcell base station, Home eNodeB, the wireless telecom equipments such as relay base station.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification made, equivalent replacement, improve etc., it should be included in protection of the invention
Within the scope of.
Claims (14)
1. a kind of method in UE for supporting narrow band communication, wherein include the following steps:
Step A. receives downlink signal, and the downlink signal occupied bandwidth in a time window is less than or equal to
180kHz；
Step B. sends uplink RS, and the uplink RS occupied bandwidth in a time window is less than or equal to 180kHz；
Wherein, the downlink signal indicates first object position, and first object position includes the occupied time-frequency of uplink RS
Time-domain position of the resource in time window；The downlink signal include { characteristic sequence, high-level signaling, physical layer signaling } in extremely
It is one of few；The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband set of symbols in time window,
It include Q narrowband symbol in each narrowband set of symbols, the uplink RS is on each narrowband symbol in M narrowband symbol
Occupy L1 subcarrier；The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively；The T
Greater than 1, the position of occupied running time-frequency resource in each time window of the T time window the uplink RS is identical.
2. a kind of method in base station for supporting narrow band communication, wherein include the following steps:
Step A. sends downlink signal, and the downlink signal occupied bandwidth in a time window is less than or equal to
180kHz；
Step B. receives uplink RS, and the uplink RS occupied bandwidth in a time window is less than or equal to 180kHz；
Wherein, the downlink signal indicates first object position, and first object position includes the occupied time-frequency of uplink RS
Time-domain position of the resource in time window；The downlink signal include { characteristic sequence, high-level signaling, physical layer signaling } in extremely
It is one of few；The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband set of symbols in time window,
It include Q narrowband symbol in each narrowband set of symbols, the uplink RS is on each narrowband symbol in M narrowband symbol
Occupy L1 subcarrier；The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively；The T
Greater than 1, the position of occupied running time-frequency resource in each time window of the T time window the uplink RS is identical.
3. a kind of user equipment for supporting narrow band communication, wherein including following module:
First module: for receiving downlink signal, the downlink signal occupied bandwidth in a time window be less than or
Equal to 180kHz；
Second module: for sending uplink RS, the uplink RS occupied bandwidth in a time window is less than or equal to
180kHz；
Wherein, the downlink signal indicates first object position, and first object position includes the occupied time-frequency of uplink RS
Time-domain position of the resource in time window；The downlink signal include { characteristic sequence, high-level signaling, physical layer signaling } in extremely
It is one of few；The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband set of symbols in time window,
It include Q narrowband symbol in each narrowband set of symbols, the uplink RS is on each narrowband symbol in M narrowband symbol
Occupy L1 subcarrier；The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively；The T
Greater than 1, the position of occupied running time-frequency resource in each time window of the T time window the uplink RS is identical.
4. user equipment according to claim 3, which is characterized in that second module sends uplink signal；Wherein, institute
It states uplink signal and the uplink RS is sent by identical antenna port, when the uplink signal occupies described T in the time domain
Between window, the uplink signal in time window occupied bandwidth be less than or equal to 180kHz.
5. user equipment according to claim 3, which is characterized in that the downlink signal includes at least one of:
First information cell index；
- the second information flag bit bit；
Index of the third information first object position in K position candidate；
Wherein, the K position candidate is default determination, or is configurable；The K is greater than 1 positive integer.
6. user equipment according to claim 3, which is characterized in that the uplink RS is every in the T time window
L2 subcarrier is occupied in a time window, the L2 is greater than the positive integer of the L1；First object position includes the uplink
Frequency domain position of the occupied running time-frequency resource of RS in time window.
7. the user equipment according to any claim in claim 4 to 6, which is characterized in that if the UE is in institute
It states and executes ST transmission in T time window, the uplink signal occupied subcarrier in time window is first kind subcarrier；Such as
UE described in fruit executes MT transmission in the T time window, and the uplink signal wraps in occupied subcarrier in time window
Include at least one of { first kind subcarrier, second class subcarrier }；Wherein, first kind subcarrier includes at least in time window
One is used for transmission the resource units of the uplink RS, and resource units of the second class subcarrier in time window are described for carrying
Wireless signal except uplink RS.
8. the user equipment according to any claim in claim 4 to 6, which is characterized in that at least there is a mesh
Subcarrier is marked, the uplink RS occupies the target sub-carriers in given time window, and the uplink signal is described given
Without occupying the target sub-carriers in time window.
9. a kind of base station equipment for supporting narrow band communication, wherein including following module:
First module: for sending downlink signal, the downlink signal occupied bandwidth in a time window be less than or
Equal to 180kHz；
Second module: for receiving uplink RS, the uplink RS occupied bandwidth in a time window is less than or equal to
180kHz；
Wherein, the downlink signal indicates first object position, and first object position includes the occupied time-frequency of uplink RS
Time-domain position of the resource in time window；The downlink signal include { characteristic sequence, high-level signaling, physical layer signaling } in extremely
It is one of few；The uplink RS occupies T time window in the time domain, and the uplink RS occupies M narrowband set of symbols in time window,
It include Q narrowband symbol in each narrowband set of symbols, the uplink RS is on each narrowband symbol in M narrowband symbol
Occupy L1 subcarrier；The time window is the basic thread of time-domain, and { L1, T, M, Q } is positive integer respectively；The T
Greater than 1, the position of occupied running time-frequency resource in each time window of the T time window the uplink RS is identical.
10. base station equipment according to claim 9, which is characterized in that the second module receives uplink signal；Wherein, described
Uplink signal and the uplink RS are sent by identical antenna port, and the uplink signal occupies the T time in the time domain
Window, the uplink signal occupied bandwidth in time window are less than or equal to 180kHz.
11. base station equipment according to claim 9, which is characterized in that the downlink signal includes at least one of:
First information cell index；
- the second information flag bit bit；
Index of the third information first object position in K position candidate；
Wherein, the K position candidate is default determination, or is configurable；The K is greater than 1 positive integer.
12. base station equipment according to claim 9, which is characterized in that the uplink RS is every in the T time window
L2 subcarrier is occupied in a time window, the L2 is greater than the positive integer of the L1；First object position includes the uplink
Frequency domain position of the occupied running time-frequency resource of RS in time window.
13. the base station equipment according to any claim in claim 9 to 12, which is characterized in that if the uplink
The transmission UE of signal executes ST transmission, the uplink signal occupied subcarrier in time window in the T time window
It is first kind subcarrier；If the transmission UE of the uplink signal executes MT transmission, the uplink letter in the T time window
Include in number subcarrier occupied in time window at least one of { first kind subcarrier, second class subcarrier }；Wherein,
First kind subcarrier includes that at least one is used for transmission the resource units of the uplink RS in time window, and the second class subcarrier exists
Resource units in time window are used to carry the wireless signal except the uplink RS.
14. the base station equipment according to any claim in claim 9 to 12, which is characterized in that at least there is one
Target sub-carriers, the uplink RS occupy the target sub-carriers in given time window, and the uplink signal is given described
It fixes time in window without occupying the target sub-carriers.
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| CN201910380899.7A CN110049567B (en) | 2015-12-10 | 2015-12-10 | Method and device in narrow-band wireless transmission |
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| CN201510917789.1A CN106877984B (en) | 2015-12-10 | 2015-12-10 | A kind of method and apparatus in narrowband wireless transmission |
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| CN109428699B (en) * | 2017-08-28 | 2021-03-09 | 上海朗帛通信技术有限公司 | Method and device in user equipment and base station used for narrow-band communication |
| CN109462462B (en) * | 2017-09-06 | 2021-07-27 | 上海朗帛通信技术有限公司 | Method and device used in user and base station of wireless communication |
| CN115037586B (en) * | 2017-09-29 | 2024-08-13 | 中兴通讯股份有限公司 | Signal sending method and system |
| CN111970101B (en) * | 2018-01-05 | 2022-07-05 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
| WO2020061950A1 (en) * | 2018-09-27 | 2020-04-02 | Oppo广东移动通信有限公司 | Communication method, terminal device, and network device |
| CN111162806B (en) * | 2019-11-21 | 2021-04-30 | 南京码讯光电技术有限公司 | Method and system for detecting and eliminating narrow-band interference of wireless broadband system |
| CN113965230B (en) * | 2020-07-20 | 2022-08-19 | 上海朗帛通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
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| US20150280848A1 (en) * | 2014-03-31 | 2015-10-01 | Mitsubishi Electric Corporation | Method and device for cancelling a narrow band interference in a single carrier signal and computer program |
| CN105099634A (en) * | 2014-05-09 | 2015-11-25 | 中兴通讯股份有限公司 | Dynamic resource allocating method and apparatus, base station, terminal |
Also Published As
| Publication number | Publication date |
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| CN106877984B (en) | 2019-08-20 |
| CN110049567B (en) | 2023-02-24 |
| CN106877984A (en) | 2017-06-20 |
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