CN107800514B - A kind of transmission method of downlink data and passback base station - Google Patents
A kind of transmission method of downlink data and passback base station Download PDFInfo
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- CN107800514B CN107800514B CN201711137388.XA CN201711137388A CN107800514B CN 107800514 B CN107800514 B CN 107800514B CN 201711137388 A CN201711137388 A CN 201711137388A CN 107800514 B CN107800514 B CN 107800514B
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- 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
- H04L1/0026—Transmission of channel quality indication
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Abstract
The embodiment of the present invention provides transmission method and the passback base station of a kind of downlink data, is related to field of communication technology, the data transmission credibility for solving the problems, such as that the prior art occurs is low.This programme are as follows: passback base station receives the downlink data to be transmitted to purpose base station that core net is sent；In the case where meeting CQI adjusting condition, the 2nd CQI index value is determined according to the first CQI index value of the wireless backhaul links of purpose base station feedback；The order of modulation of the corresponding modulation system of 2nd CQI index value modulation system more corresponding than the first CQI index value is low；CQI adjusting condition includes: to return the current radio resource service condition of base station less than or equal to load-threshold, and the first CQI index value is in preset range；The first MCS index value is determined according to the 2nd CQI index value, and the first MCS index value is sent to purpose base station；Downlink data is sent to purpose base station according to the first MCS index value.The present invention is applied in downlink data transmission.
Description
Technical field
The present invention relates to the transmission methods and passback base station of field of communication technology more particularly to a kind of downlink data.
Background technique
With the fast development of mobile Internet business, mobile network is also required to dispose more base stations higher to improve
Network capacity.The deployment of base station completes the data between base station and mobile core network firstly the need of data back is solved the problems, such as
Intercommunication.Traditional data back mode is the direct deployed fiber between base station and transmission switching mechanism, to provide at a high speed, surely
Fixed, high reliability transmission guarantee.However, the transmission mode lower deployment cost of feed-though fiber is higher, construction takes a long time, and with
Base station deployment gradually encrypts, and not all site all has the condition of deployment feed-though fiber.In order to improve disposition flexibility,
Solve to lack deployment issue when wired revolution link, the transmission mode of wireless backhaul starts to be used.
Wireless backhaul network, including user service base station, passback CPE (full name in English: Customer Premise
Equipment, Chinese: customer terminal equipment), passback base station, wherein user service base station provides wireless network for user terminal
Access service, user service base station and passback CPE are integrated on hardware.When user service base station is intended to user uplink number
When according to being transferred to core net, data are sent to passback by up-link wireless transmission link by passback CPE by user service base station
Base station, passback base station recycle feed-though fiber link or other wireless backhaul links to be transferred to core net；It is corresponding, work as core net
When being intended to that user's downlink data is sent to user service base station to pass to user terminal, data are first transmitted and are given back to by core net
Base station is passed, passback base station sends the data to passback CPE by downlink wireless transmission link again, and passback CPE is passed data to
User service base station.
Although existing wireless backhaul scheme is because the advantage that deployment is quick, flexibility is high brings greatly deployment just
Benefit, but also due to inevitable network interferences, the problem of introducing the reduction of transmission reliability in wireless transmission.Specifically,
Network interferences make that demodulating error may occur by the data of wireless backhaul, and then the retransmission mechanism for causing wireless network opens
Dynamic, the data for demodulating mistake are possibly retransmission, and this mode allows for needing to be repeated as many times as required transmission and make due to partial data
The reliability for obtaining data transmission reduces, to increase the data transfer delay of network, i.e., transmission efficiency is low.
Summary of the invention
The embodiment of the present invention provides transmission method and the passback base station of a kind of downlink data, solves what the prior art occurred
The low problem of data transmission credibility.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
The embodiment of the present invention in a first aspect, providing a kind of transmission method of downlink data, which comprises
It returns base station and receives the downlink data to be transmitted to purpose base station that core net is sent；
In the case where meeting CQI adjusting condition, according to the first CQI index of the wireless backhaul links of purpose base station feedback
It is worth and determines the 2nd CQI index value；The corresponding modulation system of the 2nd CQI index value is more corresponding than the first CQI index value
The order of modulation of modulation system is low；The CQI adjusting condition includes: that the current radio resource service condition of the passback base station is small
In or be equal to load-threshold, and the first CQI index value is in preset range；
The first MCS index value is determined according to the 2nd CQI index value, and the first MCS index value is sent to mesh
Base station；
The downlink data is sent to the purpose base station according to the first MCS index value.
Preferably, the corresponding modulation system of the 2nd CQI index value modulation system more corresponding than the first CQI index value
The low level-one of order of modulation.
Preferably, the CQI adjusting condition further include: the priority level of the purpose base station is greater than or equal to threshold value.
Optionally, the method also includes:
When the priority level that the current radio resource service condition of passback base station is greater than load-threshold or purpose base station is small
Not within a preset range in threshold value or the first CQI index value, according to the first of the wireless backhaul links of purpose base station feedback
CQI index value determines the 2nd MCS index value.
The second aspect of the embodiment of the present invention provides a kind of passback base station, comprising:
Receiving module, for receiving the downlink data to be transmitted to purpose base station of core net transmission；
Processing module, in the case where meeting CQI adjusting condition, according to the wireless backhaul links of purpose base station feedback
The first CQI index value determine the 2nd CQI index value；The corresponding modulation system of the 2nd CQI index value is than the first CQI
The order of modulation of the corresponding modulation system of index value is low；The CQI adjusting condition includes: the current wireless money of the passback base station
Source service condition is less than or equal to load-threshold, and the first CQI index value is in preset range；
The processing module is also used to determine the first MCS index value according to the 2nd CQI index value；
Sending module, for the first MCS index value to be sent to purpose base station；
The sending module is also used to send the lower line number to the purpose base station according to the first MCS index value
According to.
Preferably, the corresponding modulation system of the 2nd CQI index value modulation system more corresponding than the first CQI index value
The low level-one of order of modulation.
Preferably, the CQI adjusting condition further include: the priority level of the purpose base station is greater than or equal to threshold value.
Optionally, the processing module is also used to:
When the priority level that the current radio resource service condition of passback base station is greater than load-threshold or purpose base station is small
Not within a preset range in threshold value or the first CQI index value, according to the first of the wireless backhaul links of purpose base station feedback
CQI index value determines the 2nd MCS index value.
The third aspect of the embodiment of the present invention provides a kind of passback base station, comprising: processor, memory and communication connect
Mouthful, in which:
The memory is for storing computer executed instructions, and when passback base station operation, the processor is executed
The computer executed instructions of the memory storage, so that the passback base station executes lower line number as described in relation to the first aspect
According to transmission method.
The fourth aspect of the embodiment of the present invention provides a kind of computer storage medium, including computer instruction, when the meter
The instruction of calculation machine on returning base station when running, so that the passback base station executes the transmission of downlink data as described in relation to the first aspect
Method.
5th aspect of the embodiment of the present invention, provides a kind of computer program product, when the computer program product exists
When being run on computer, so that the computer executes the transmission method of downlink data as described in relation to the first aspect.
The transmission method of downlink data provided in an embodiment of the present invention and passback base station, passback base station is by receiving core net
The downlink data to be transmitted to purpose base station sent, in the case where meeting CQI adjusting condition, according to purpose base station feedback
First CQI index value of wireless backhaul links determines the 2nd CQI index value；The corresponding modulation system of 2nd CQI index value is than
The order of modulation of the corresponding modulation system of one CQI index value is low；CQI adjusting condition includes: the current radio resource for returning base station
Service condition is less than or equal to load-threshold, and the first CQI index value is in preset range；It is true according to the 2nd CQI index value
Fixed first MCS index value, and the first MCS index value is sent to purpose base station；It is sent out according to the first MCS index value to purpose base station
Send downlink data.Since the corresponding modulation system of identified 2nd CQI index value is more corresponding than the first CQI index value in we
The order of modulation of modulation system is low, and transmission reliability when carrying out transmission data using the lower order of modulation is higher, resists dry
It disturbs that ability is stronger, so that the probability that data retransmit, which occurs, to be reduced, also just reduces transmission delay, improve efficiency of transmission.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is a kind of application scenarios one provided in an embodiment of the present invention；
Fig. 2 is a kind of application scenarios two provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the transmission method of downlink data provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram for returning base station provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, use " the
One ", the printed words such as " second " distinguish function or the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not defined quantity and execution order.
Order of modulation and modulation system involved in the embodiment of the present invention be it is corresponding, it is exemplary, if modulation system is
Quadrature phase shift keying (QPSK, Quadrature Phase Shift Keying), order of modulation 2, if modulation system is
16QAM (English: Quadrature Amplitude Modulation, referred to as: quadrature amplitude modulation), then order of modulation is 4,
If modulation system is 64QAM, order of modulation 6.The different modulation system has different features, and the modulation of low order increases
More redundancy causes actual efficiency lower, but can guarantee higher reliability, high order modulation efficiency with higher but can
It is poor by property.Therefore, guarantee the reliability of data transmission by reducing order of modulation in this programme.
The application scenarios one that the bright embodiment of we provides, as shown in Figure 1, including: user service base in the application scenarios one
It stands, return base station (relay base station) and core net, form wireless backhaul links between the user service base station and passback base station, when
Core net by downlink data transmission to user service base station when, core net pass through feed-though fiber link or other wireless backhaul links
It is transferred to passback base station, passback base station passes through wireless backhaul links again and gives downlink data transmission to user service base station, this programme
Based in the application scenarios one, be mainly accomplished that passback base station to user service base station transmission downlink data process.
Application scenarios two provided in an embodiment of the present invention, as shown in Fig. 2, including: user service base in the application scenarios two
It stands, first returns base station (relay base station) and the second passback base station and core net, the user service base station and the first passback
Wireless backhaul links are formed between base station, are formed wireless backhaul links between the first passback base station and the second passback base station, are worked as core net
When by downlink data transmission to user service base station, core net is transferred to by feed-though fiber link or other wireless backhaul links
Second passback base station, the second passback base station pass through wireless backhaul links again and give downlink data transmission to user service base station, we
Case is based in the application scenarios two, is mainly accomplished that mistake of the second passback base station to the first passback base station transmission downlink data
Journey.
It should be noted that generally comprising two kinds of forward pass and passback in the communications, in which: forward pass refers to that terminal and user take
Data are transmitted between business base station, and are returned and referred to user service base station, return and transmit data between base station and core net, the user
The link taken when transmitting data between serving BS, passback base station and core net is referred to as wireless backhaul links, this is wireless
Return link includes uplink link and downlink transfer link.
The embodiment of the present invention provides a kind of downlink data transmission method, as shown in Figure 3 this method comprises:
201, passback base station receives the downlink data to be transmitted to purpose base station that core net is sent.
Wherein, two kinds of application scenarios based on Fig. 1 and Fig. 2, above-mentioned purpose base station refers to user service base station or first
Return base station.Above-mentioned passback base station refers to relay base station, in core net to the mistake for transmitting downlink data between user service base station
Play the role of intermediate forwarding in journey.
202, passback base station is in the case where meeting CQI adjusting condition, according to the wireless backhaul links of purpose base station feedback
The first CQI index value determine the 2nd CQI index value.
Wherein, above-mentioned CQI adjusting condition includes: to return the current radio resource service condition of base station less than or equal to negative
Thresholding is carried, and the first CQI index value is in preset range.
Illustratively, above-mentioned load-threshold is a percentage, thinks to return making for base station lower than this load-threshold
Radio resource is more abundant.The setting of the load-threshold occurrence is related with the passback average load situation of base station, if returning
The average load for passing base station is higher, the value can be arranged little higher, and otherwise this method is difficult to start；If returning the flat of base station
Load it is lower, which can be arranged it is more slightly lower, with avoid as far as possible using this method to passback base station taking at present
The other users of business or the business experience for returning base station impact.
Illustratively, above-mentioned preset range refers to one or more groups of CQI indexes section, if purpose base station feedback is wireless
First CQI index value of return link is in the preset range, then it is assumed that during transmitting downlink data use than this
The lower modulation system transmission reliability of the corresponding order of modulation of one CQI index value can significantly improve.Specific set-up mode needs
According to operator itself policy development, which is arranged excessive, can will generally reduce modulation order when so that transmitting data
Number, causes wireless resource utility efficiency excessively to reduce；If value setting is too small, will be so that this method is difficult to effectively start.
It is wherein, above-mentioned that be less than or equal to include being less than, being less than or equal to both of these case.
Illustratively, the service condition of above-mentioned radio resource includes but is not limited to: the utilization rate of RB, cpu busy percentage with
And RRC (English: Radio Resource Control, Chinese: wireless heterogeneous networks) connection number.
Optionally, above-mentioned CQI adjusting condition further include: the priority level of purpose base station is greater than or equal to threshold value.
Illustratively, the priority level of above-mentioned base station is preset, specifically can with different marks into
Row indicates.All base stations can also be defined as to high priority base station or all base stations are low priority base station, it can also be with
According to the actual mobile network's layout strategy definition of operator.Such as macro base station is set as high priority base station, micro-base station is low
Priority base station, or using the base station of assigned frequency is high priority base station.Wherein, high priority base station and low priority base station
It is the height of grade, can be defined during concrete implementation less than a certain threshold value is low priority base station, is higher than the threshold
Value is high priority base station.
Illustratively, the specific implementation of the first CQI index value of the wireless backhaul links of above-mentioned purpose base station feedback
Journey is as follows: the first CQI index value is to measure CPE to returning base station by the CPE (can be considered as UE here) of purpose embedded in base station
Between wireless backhaul links the first CQI index value, since CPE is in purpose inside of base station, it can be appreciated that first
CQI index value is purpose base station and returns the wireless backhaul links between base station, and then CPE directly sends out the first CQI index value
Give passback base station or CPE by the first CQI index value be first supplied to purpose base station (belong to purpose inside of base station data pass
It is defeated), by purpose base station, by the first CQI index value, in a manner of data transmission between base station (such as passing through X2 interface) is sent to passback
Base station.
Wherein, the above-mentioned corresponding modulation system of the 2nd CQI index value modulation system more corresponding than the first CQI index value
Order of modulation is low.
Preferably, the 2nd above-mentioned CQI index is the corresponding modulation system of the first CQI index than the first CQI index value pair
The low level-one of the order of modulation for the modulation system answered.
Optionally, when the order of modulation of the corresponding modulation system of the first CQI index is 6, the 2nd above-mentioned CQI index pair
The low two-stage of order of modulation of the modulation system answered modulation system more corresponding than the first CQI index value, i.e. the 2nd CQI index correspond to
Modulation system order of modulation be 2.
Specifically, the table 1 gives the mapping between CQI index, modulation system and order of modulation referring to following table 1
Relationship.
Table 1
| CQI index | Modulation system | Order of modulation |
| 1 | QPSK | 2 |
| 2 | QPSK | 2 |
| 3 | QPSK | 2 |
| 4 | QPSK | 2 |
| 5 | QPSK | 2 |
| 6 | QPSK | 2 |
| 7 | 16QAM | 4 |
| 8 | 16QAM | 4 |
| 9 | 16QAM | 4 |
| 10 | 64QAM | 6 |
| 11 | 64QAM | 6 |
| 12 | 64QAM | 6 |
| 13 | 64QAM | 6 |
| 14 | 64QAM | 6 |
| 15 | 64QAM | 6 |
By above-mentioned table 1 it is known that if the first CQI index value of the wireless backhaul links of purpose base station feedback is 12,
The order of modulation that can learn the 12 corresponding modulation system is 6, it is determined that the corresponding modulation of the 2nd CQI index value gone out is small
In 6, the 2nd CQI index value between 1-9 value.
Further, for the reliability of improve data transfer, by above-mentioned table 1 it is found that the 2nd CQI index value is in 7-
Value between 9 can guarantee the corresponding modulation system of the 2nd CQI index value modulation methods more corresponding than the first CQI index value in this way
The low level-one of the order of modulation of formula.
It is further preferred that while guaranteeing the reliability of data transmission, in order not to reduce the bandwidth of transmission data, by
For above-mentioned table 1 it is found that the 2nd CQI index value is 9, can make the second CQI index in this way is the corresponding tune of the first CQI index
The maximum value of CQI index value corresponding to the low level-one of order processed.
203, passback base station determines the first MCS index value according to the 2nd CQI index value, and the first MCS index value is sent
To purpose base station.
Illustratively, directly the first MCS index value is sent in purpose base station in step 203, in order to purpose base
It stands according to the corresponding modulation system demodulation downlink data of the first MCS index value.
204, passback base station sends downlink data to purpose base station according to the first MCS index value.
It should be noted that being referred to 3GPP (full name in English: 3rd for the specific implementation process in step 204
Generation Partnership Project, Chinese: third generation partner program) regulation in standard, here no longer
It repeats.
The transmission method of downlink data provided in an embodiment of the present invention, passback base station is by receiving the to be passed of core net transmission
It is defeated by the downlink data of purpose base station, in the case where meeting CQI adjusting condition, according to the wireless backhaul chain of purpose base station feedback
The first CQI index value on road determines the 2nd CQI index value；The corresponding modulation system of 2nd CQI index value is than the first CQI index value
The order of modulation of corresponding modulation system is low；CQI adjusting condition includes: that the current radio resource service condition of passback base station is less than
Or it is equal to load-threshold, and the first CQI index value is in preset range；The first MCS index is determined according to the 2nd CQI index value
Value, and the first MCS index value is sent to purpose base station；Downlink data is sent to purpose base station according to the first MCS index value.By
The tune of the corresponding modulation system of 2nd CQI index value modulation system more corresponding than the first CQI index value determined by we
Order processed is low, and transmission reliability when carrying out transmission data using the lower order of modulation is higher, and anti-interference ability is stronger, from
And make that the probability reduction that data retransmit occurs, transmission delay is also just reduced, efficiency of transmission is improved.
It is further alternative, this method further include:
205, when the current radio resource service condition of passback base station is greater than load-threshold or the priority of purpose base station etc.
Grade is less than threshold value or the first CQI index value not within a preset range, according to the first of the wireless backhaul links of purpose base station feedback
CQI index value determines the 2nd MCS index value.
Further, based on above-mentioned step 205 this method further include:.
206, the 2nd MCS index value is sent to purpose base station.
207, downlink data is sent to purpose base station according to the 2nd MCS index value.
It should be noted that being referred to 3GPP (full name in English: 3rd for the specific implementation process in step 207
Generation Partnership Project, Chinese: third generation partner program) regulation in standard, here no longer
It repeats.
The associated description in the embodiment of the transmission method based on the corresponding downlink data of Fig. 3 implements the present invention below
A kind of passback base station that example provides is introduced.Technical term relevant to above-described embodiment, concept etc. in following embodiment
Illustrate to be referred to the above embodiments, which is not described herein again.
The embodiment of the present invention provides a kind of passback base station, as shown in figure 4, the passback base station 4 includes: receiving module 41, place
Manage module 42 and sending module 43, in which:
Receiving module 41, for receiving the downlink data to be transmitted to purpose base station of core net transmission.
Processing module 42, in the case where meeting CQI adjusting condition, according to the wireless backhaul chain of purpose base station feedback
The first CQI index value on road determines the 2nd CQI index value；The corresponding modulation system of 2nd CQI index value is than the first CQI index value
The order of modulation of corresponding modulation system is low；CQI adjusting condition includes: that the current radio resource service condition of passback base station is less than
Or it is equal to load-threshold, and the first CQI index value is in preset range.
Processing module 42 is also used to determine the first MCS index value according to the 2nd CQI index value.
Sending module 43, for the first MCS index value to be sent to purpose base station.
Sending module 43 is also used to send downlink data to purpose base station according to the first MCS index value.
Preferably, the above-mentioned corresponding modulation system of the 2nd CQI index value modulation system more corresponding than the first CQI index value
The low level-one of order of modulation.
Optionally, when the order of modulation of the corresponding modulation system of the first CQI index is 6, the 2nd above-mentioned CQI index pair
The low two-stage of order of modulation of the modulation system answered modulation system more corresponding than the first CQI index value, i.e. the 2nd CQI index correspond to
Modulation system order of modulation be 2.
Specifically, the table 1 gives the mapping between CQI index, modulation system and order of modulation referring to following table 1
Relationship.
Table 1
By above-mentioned table 1 it is known that if the first CQI index value of the wireless backhaul links of purpose base station feedback is 12,
The order of modulation that can learn the 12 corresponding modulation system is 6, it is determined that the corresponding modulation of the 2nd CQI index value gone out is small
In 6, the 2nd CQI index value between 1-9 value.
Further, for the reliability of improve data transfer, by above-mentioned table 1 it is found that the 2nd CQI index value is in 7-
Value between 9 can guarantee the corresponding modulation system of the 2nd CQI index value modulation methods more corresponding than the first CQI index value in this way
The low level-one of the order of modulation of formula.
It is further preferred that while guaranteeing the reliability of data transmission, in order not to reduce the bandwidth of transmission data, by
For above-mentioned table 1 it is found that the 2nd CQI index value is 9, can make the second CQI index in this way is the corresponding tune of the first CQI index
The maximum value of CQI index value corresponding to the low level-one of order processed.
Preferably, CQI adjusting condition further include: the priority level of purpose base station is greater than or equal to threshold value.
Optionally, processing module 42 is also used to:
When the priority level that the current radio resource service condition of passback base station is greater than load-threshold or purpose base station is small
Not within a preset range in threshold value or the first CQI index value, according to the first CQI of the wireless backhaul links of purpose base station feedback
Index value determines the 2nd MCS index value.
Further alternative, above-mentioned sending module 43 is also used to the 2nd MCS index value being sent to purpose base station；Also use
According to the 2nd MCS index value to purpose base station send downlink data.
Wherein, two kinds of application scenarios based on Fig. 1 and Fig. 2, above-mentioned purpose base station refers to user service base station or first
Return base station.Above-mentioned passback base station refers to relay base station, in core net to the mistake for transmitting downlink data between user service base station
Play the role of intermediate forwarding in journey.
It is wherein, above-mentioned that be less than or equal to include being less than, being less than or equal to both of these case.
Illustratively, the service condition of above-mentioned radio resource includes but is not limited to: the utilization rate of RB, cpu busy percentage with
And RRC (English: Radio Resource Control, Chinese: wireless heterogeneous networks) connection number.
It should be noted that sending downlink data to purpose base station according to the first MCS index value for sending module 43
Or the specific implementation process when sending downlink data to purpose base station according to the 2nd MCS index value is referred to 3GPP (English
Literary full name: 3rd Generation Partnership Project, Chinese: third generation partner program) rule in standard
Fixed, which is not described herein again.
Passback base station provided in an embodiment of the present invention, passback base station is by reception core net transmission to be transmitted to purpose base
The downlink data stood, in the case where meeting CQI adjusting condition, according to the first of the wireless backhaul links of purpose base station feedback
CQI index value determines the 2nd CQI index value；The corresponding modulation system of 2nd CQI index value tune more corresponding than the first CQI index value
The order of modulation of mode processed is low；CQI adjusting condition includes: to return the current radio resource service condition of base station less than or equal to negative
Thresholding is carried, and the first CQI index value is in preset range；The first MCS index value is determined according to the 2nd CQI index value, and will
First MCS index value is sent to purpose base station；Downlink data is sent to purpose base station according to the first MCS index value.Due to we
In determined by the 2nd CQI index value corresponding modulation system modulation system more corresponding than the first CQI index value order of modulation
It is low, and transmission reliability when carrying out transmission data using the lower order of modulation is higher, anti-interference ability is stronger, so that
The probability that data retransmit, which occurs, to be reduced, and is also just reduced transmission delay, is improved efficiency of transmission.
The embodiment of the present invention provides a kind of passback base station, comprising: processor, memory and communication interface, in which:
Memory is for storing computer executed instructions, and when returning base station operation, processor executes memory storage
Computer executed instructions, so that passback base station executes the transmission method of the downlink data such as first aspect.
Illustratively, above-mentioned memory may include high-speed random access memory, can also include non-volatile memory
Device, such as disk memory, flush memory device or other volatile solid-state parts etc..
Illustratively, above-mentioned communication interface is for receiving the downlink data that core net is sent to purpose base station, the communication
Interface can be interface circuit.
Illustratively, above-mentioned processor can be central processing unit (Central Processing Unit, CPU), lead to
With processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application-Specific Integrated Circuit, ASIC), field programmable gate array (Field
Programmable Gate Array, FPGA) or other programmable logic device, transistor logic, hardware component or
Person's any combination thereof.It, which may be implemented or executes, combines various illustrative logic blocks described in present disclosure,
Module and circuit.The processor is also possible to realize the combination of computing function, such as includes one or more microprocessors group
It closes, DSP and the combination of microprocessor etc..
The embodiment of the present invention provides a kind of computer storage medium, including computer instruction, when computer instruction is returning
When being run on base station, so that passback base station executes the transmission method of the downlink data such as first aspect.
Illustratively, any usable medium that computer readable storage medium can be that computer can access either is wrapped
The data storage devices such as server, the data center integrated containing one or more usable mediums.The usable medium can be magnetism
Medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk Solid
State Disk (SSD)) etc..
The embodiment of the present invention provides a kind of computer program product, when computer program product is run on computers,
So that computer executes the transmission method of the downlink data such as first aspect.
Illustratively, above-mentioned computer program product includes one or more computer instructions.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only with the division of above-mentioned each functional module for example, in practical application, can according to need and by above-mentioned function
It can distribute and be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, more than completing
The all or part of function of description.The specific work process of the system, apparatus, and unit of foregoing description can refer to aforementioned side
Corresponding process in method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed passback base station and method, Ke Yitong
Other modes are crossed to realize.For example, the embodiment of passback base station described above is only schematical, for example, the mould
The division of block or unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple
Unit or assembly can be combined or can be integrated into another system, or some features can be ignored or not executed.It is another
Point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, device or
The indirect coupling or communication connection of unit can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (9)
1. a kind of transmission method of downlink data, which is characterized in that the described method includes:
It returns base station and receives the downlink data to be transmitted to purpose base station that core net is sent；
It is true according to the first CQI index value of the wireless backhaul links of purpose base station feedback in the case where meeting CQI adjusting condition
Fixed 2nd CQI index value；The modulation more corresponding than the first CQI index value of the corresponding modulation system of the 2nd CQI index value
The order of modulation of mode is low；The CQI adjusting condition include: it is described passback base station current radio resource service condition be less than or
Equal to load-threshold, and the first CQI index value is in preset range；
The first MCS index value is determined according to the 2nd CQI index value, and the first MCS index value is sent to purpose base
It stands；
The downlink data is sent to the purpose base station according to the first MCS index value.
2. the method according to claim 1, wherein the corresponding modulation system of the 2nd CQI index value is than
The low level-one of order of modulation of the corresponding modulation system of one CQI index value.
3. the method according to claim 1, wherein the CQI adjusting condition further include: the purpose base station
Priority level is greater than or equal to threshold value.
4. the method according to claim 1, wherein the method also includes:
When the priority level that the current radio resource service condition of passback base station is greater than load-threshold or purpose base station is less than threshold
Value or the first CQI index value not within a preset range, according to the first CQI of the wireless backhaul links of purpose base station feedback
Index value determines the 2nd MCS index value.
5. a kind of passback base station characterized by comprising
Receiving module, for receiving the downlink data to be transmitted to purpose base station of core net transmission；
Processing module, in the case where meeting CQI adjusting condition, according to the of the wireless backhaul links of purpose base station feedback
One CQI index value determines the 2nd CQI index value；The corresponding modulation system of the 2nd CQI index value is than the first CQI index
The order of modulation for being worth corresponding modulation system is low；The CQI adjusting condition includes: that the current radio resource of the passback base station makes
It is less than or equal to load-threshold with situation, and the first CQI index value is in preset range；
The processing module is also used to determine the first MCS index value according to the 2nd CQI index value；
Sending module, for the first MCS index value to be sent to purpose base station；
The sending module is also used to send the downlink data to the purpose base station according to the first MCS index value.
6. passback base station according to claim 5, which is characterized in that the CQI adjusting condition further include: the purpose base
The priority level stood is greater than or equal to threshold value.
7. passback base station according to claim 5, which is characterized in that the processing module is also used to:
When the priority level that the current radio resource service condition of passback base station is greater than load-threshold or purpose base station is less than threshold
Value or the first CQI index value not within a preset range, according to the first CQI of the wireless backhaul links of purpose base station feedback
Index value determines the 2nd MCS index value.
8. a kind of passback base station characterized by comprising processor, memory and communication interface, in which:
The memory is for storing computer executed instructions, when passback base station operation, described in the processor execution
The computer executed instructions of memory storage, so that the passback base station is executed as described in any one of claim 1-4
Downlink data transmission method.
9. a kind of computer storage medium, which is characterized in that computer instruction is stored with, when the computer instruction is in passback base
When being run on standing, so that the passback base station executes the transmission method such as downlink data of any of claims 1-4.
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| CN111555853B (en) * | 2018-04-02 | 2022-11-18 | Oppo广东移动通信有限公司 | Method and equipment for transmitting configuration information and method and equipment for receiving configuration information |
| CN113824533B (en) * | 2020-06-19 | 2024-09-06 | 南京中兴新软件有限责任公司 | Method, device and storage medium for determining Modulation Coding Scheme (MCS) |
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| US9432168B2 (en) * | 2012-12-19 | 2016-08-30 | Lg Electronics Inc. | Method and apparatus for transmitting and receiving channel status information (CSI) for supporting 256QAM in wireless access system |
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| CN103260247A (en) * | 2013-05-20 | 2013-08-21 | 中国联合网络通信集团有限公司 | Scheduling method, relay node and base station |
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