CN107800514A - 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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- CN107800514A CN107800514A CN201711137388.XA CN201711137388A CN107800514A CN 107800514 A CN107800514 A CN 107800514A CN 201711137388 A CN201711137388 A CN 201711137388A CN 107800514 A CN107800514 A CN 107800514A
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- index values
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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
Abstract
The embodiment of the present invention provides transmission method and the passback base station of a kind of downlink data, is related to communication technical field, solves the problems, such as that the data transmission credibility that prior art occurs is low.This programme is：Return base station and receive the downlink data to be transmitted to purpose base station that core net is sent；In the case where meeting CQI adjusting conditions, the 2nd CQI index values are determined according to the first CQI index values of the wireless backhaul links of purpose base station feedback；Modulation system corresponding to 2nd CQI index values is lower than the order of modulation of modulation system corresponding to the first CQI index values；CQI adjusting conditions include：The current radio resource service condition of passback base station is less than or equal to load-threshold, and the first CQI index values are in preset range；First MCS index values are determined according to the 2nd CQI index values, and the first MCS index values are sent to purpose base station；Downlink data is sent to purpose base station according to the first MCS index values.The present invention is applied in downlink data transmission.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of transmission method of downlink data and passback base station.
Background technology
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 solving the problems, such as data back
Intercommunication.Traditional data back mode, it is the direct deployed fiber between base station and transmission switching mechanism, so as to provide at a high speed, surely
The fixed, transmission guarantee of high reliability.However, the transmission means lower deployment cost of feed-though fiber is higher, construction is time-consuming longer, and with
Base station deployment is gradually encrypted, and not all site all possesses the condition of deployment feed-though fiber.In order to improve disposition flexibility,
Solves to lack deployment issue during wired revolution link, the transmission means of wireless backhaul starts to be used.
Wireless backhaul network, including user service base station, passback CPE (English full name：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
During according to being transferred to core net, data are sent to passback by user service base station by returning CPE by up-link wireless transmission link
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 user's downlink data being sent to user service base station so as to pass to user terminal, data are first transmitted and given back to by core net
Base station is passed, passback base station sends the data to passback CPE by descending wireless transmission link again, and passback CPE is passed data to
User service base station.
Although existing wireless backhaul scheme is because the advantages of deployment is quick, flexibility is high brings greatly deployment just
Profit, but also due to inevitable network interferences in being wirelessly transferred, the problem of introducing the reduction of transmission reliability.Specifically,
Network interferences cause demodulating error may occur by the data of wireless backhaul, and then trigger the retransmission mechanism of wireless network to open
Dynamic, the data for demodulating mistake are possibly retransmission, and this mode is allowed for because partial data needs are repeated as many times as required transmission and make
Obtaining the reliability of data transfer reduces, and so as to add the data transfer delay of network, i.e. efficiency of transmission is low.
The content of the invention
Embodiments of the invention provide transmission method and the passback base station of a kind of downlink data, solve what prior art occurred
The problem of data transmission credibility is low.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
The first aspect of the embodiment of the present invention, there is provided a kind of transmission method of downlink data, methods described include：
Return base station and receive the downlink data to be transmitted to purpose base station that core net is sent；
In the case where meeting CQI adjusting conditions, according to the first CQI indexes of the wireless backhaul links of purpose base station feedback
Value determines the 2nd CQI index values；Modulation system is than corresponding to the first CQI index values corresponding to the 2nd CQI index values
The order of modulation of modulation system is low；The CQI adjusting conditions include：The current radio resource service condition of the passback base station is small
In or equal to load-threshold, and the first CQI index values are in preset range；
First MCS index values are determined according to the 2nd CQI index values, and the first MCS index values are sent to mesh
Base station；
The downlink data is sent to the purpose base station according to the first MCS index values.
Preferably, modulation system corresponding to the 2nd CQI index values is than modulation system corresponding to the first CQI index values
The low one-level of order of modulation.
Preferably, the CQI adjusting conditions also include：The priority level of the purpose base station is more than or equal to threshold value.
Optionally, methods described also includes：
When the current radio resource service condition of passback base station is more than load-threshold, or the priority level of purpose base station is small
In threshold value, or the first CQI index values are not within a preset range, according to the first of the wireless backhaul links of purpose base station feedback
CQI index values determine the 2nd MCS index values.
The second aspect of the embodiment of the present invention, there is provided one kind passback base station, including：
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 conditions, according to the wireless backhaul links of purpose base station feedback
The first CQI index values determine the 2nd CQI index values；Modulation system is than the first CQI corresponding to the 2nd CQI index values
The order of modulation of modulation system corresponding to index value is low；The CQI adjusting conditions include：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 values are in preset range；
The processing module, it is additionally operable to determine the first MCS index values according to the 2nd CQI index values；
Sending module, for the first MCS index values to be sent to purpose base station；
The sending module, it is additionally operable to send the lower line number to the purpose base station according to the first MCS index values
According to.
Preferably, modulation system corresponding to the 2nd CQI index values is than modulation system corresponding to the first CQI index values
The low one-level of order of modulation.
Preferably, the CQI adjusting conditions also include：The priority level of the purpose base station is more than or equal to threshold value.
Optionally, the processing module is additionally operable to：
When the current radio resource service condition of passback base station is more than load-threshold, or the priority level of purpose base station is small
In threshold value, or the first CQI index values are not within a preset range, according to the first of the wireless backhaul links of purpose base station feedback
CQI index values determine the 2nd MCS index values.
The third aspect of the embodiment of the present invention, there is provided one kind passback base station, including：Processor, memory and communication connect
Mouthful, wherein：
The memory is used to store computer executed instructions, when the passback base station operation, the computing device
The computer executed instructions of the memory storage, so that the passback base station performs 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, there is provided a kind of computer-readable 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 performs the transmission of downlink data as described in relation to the first aspect
Method.
5th aspect of the embodiment of the present invention, there is provided a kind of computer program product, when the computer program product exists
When being run on computer so that the computer performs 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 conditions, according to purpose base station feedback
First CQI index values of wireless backhaul links determine the 2nd CQI index values；Modulation system corresponding to 2nd CQI index values is than
The order of modulation of modulation system is low corresponding to one CQI index values；CQI adjusting conditions include：Return the current radio resource of base station
Service condition is less than or equal to load-threshold, and the first CQI index values are in preset range；It is true according to the 2nd CQI index values
Fixed first MCS index values, and the first MCS index values are sent to purpose base station；Sent out according to the first MCS index values to purpose base station
Send downlink data.Because modulation system corresponding to identified 2nd CQI index values in we is than corresponding to the first CQI index values
The order of modulation of modulation system is low, and transmission reliability when being transmitted data using the relatively low order of modulation is higher, resists dry
Disturb that ability is stronger, so that the probability that data retransmit, which occurs, to be reduced, also just reduce transmission delay, improve efficiency of transmission.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying 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 representation for returning base station provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
For the ease of clearly describing the technical scheme of the embodiment of the present invention, in an embodiment of the present invention, employ " the
One ", the printed words such as " second " make a distinction to 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 to quantity and execution order.
Involved order of modulation and modulation system are corresponding in the embodiment of the present invention, example, if modulation system is
QPSK (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 adds
More redundancy causes actual efficiency relatively low, but can ensure higher reliability, and high order modulation has higher efficiency but can
It is poor by property.Therefore, the reliability of data transfer is ensured by reducing order of modulation in this programme.
The application scenarios one that the bright embodiment of we provides, as shown in figure 1, the application scenarios one include：User service base
Stand, return base station (relay base station) and core net, wireless backhaul links are formed 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 passes through feed-though fiber link or other wireless backhaul links
Passback base station is transferred to, user service base station, this programme are given downlink data transmission in passback base station by wireless backhaul links again
Based in the application scenarios one, be mainly accomplished that passback base station to user service base station transmit downlink data process.
Application scenarios two provided in an embodiment of the present invention, as shown in Fig. 2 the application scenarios two include：User service base
Stand, the first passback base station (relay base station) and the second passback base station and core net, the user service base station return with first
Wireless backhaul links are formed between base station, wireless backhaul links is formed between the first passback base station and the second passback base station, works as core net
During by downlink data transmission to user service base station, core net is transferred to by feed-though fiber link or other wireless backhaul links
User service base station is given downlink data transmission in second passback base station, the second passback base station by wireless backhaul links again, we
Case is based in the application scenarios two, is mainly accomplished that the second passback base station to the mistake of the first passback base station transmission downlink data
Journey.
It should be noted that two kinds of forward pass and passback are generally comprised in the communications, wherein：Forward pass refers to that terminal takes with user
Data are transmitted between business base station, and returns and refers to transmit data between user service base station, passback 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, and 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, and this method as shown in Figure 3 includes：
201st, return base station and receive 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 that downlink data is transmitted between user service base station
Play a part of middle forwarding in journey.
202nd, base station is returned in the case where meeting CQI adjusting conditions, according to the wireless backhaul links of purpose base station feedback
The first CQI index values determine the 2nd CQI index values.
Wherein, above-mentioned CQI adjusting conditions include：The current radio resource service condition of base station is returned less than or equal to negative
Thresholding is carried, and the first CQI index values are in preset range.
Exemplary, above-mentioned load-threshold is a percentage, thinks to return making for base station less than this load-threshold
Radio Resource is more abundant.The setting of the load-threshold occurrence is relevant with the average load situation for returning base station, if returning
It is higher to pass the average load of base station, the value can be set little higher, otherwise this method is difficult to start；If return the flat of base station
Load it is relatively low, the value can be set it is more slightly lower, with as far as possible avoid using this method to passback base station take at present
The other users of business or the business experience of passback base station impact.
Exemplary, above-mentioned preset range refers to one or more groups of CQI indexes sections, if purpose base station feedback is wireless
First CQI index values of return link are in the preset range, then it is assumed that during downlink data is transmitted use than this
The lower modulation system transmission reliability of order of modulation corresponding to one CQI index values can significantly improve.Specific set-up mode needs
According to operator itself policy development, the preset range is set excessive, will generally reduce modulation order when transmitting data
Number, causes wireless resource utility efficiency excessively to reduce；If the value is set too small, this method will be caused to be difficult to effectively start.
Wherein, it is above-mentioned be less than or equal to include being less than, less than or equal to both of these case.
Exemplary, the service condition of above-mentioned Radio Resource includes but is not limited to：RB utilization rate, cpu busy percentage with
And RRC (English：Radio Resource Control, Chinese：Wireless heterogeneous networks) connection number.
Optionally, above-mentioned CQI adjusting conditions also include：The priority level of purpose base station is more than or equal to threshold value.
Exemplary, the priority level of above-mentioned base station is set in advance, can specifically be entered with different marks
Row represents.All base stations can also be defined as to high priority base station, or all base stations are low priority base station, can also
Defined according to the actual mobile network's layout strategy of operator.Such as macro base station is set as high priority base station, micro-base station is low
Priority base station, or the base station of use assigned frequency is high priority base station.Wherein, high priority base station and low priority base station
It is the height of grade, it is low priority base station that can be defined during concrete implementation less than a certain threshold value, higher than the threshold
Value for high priority base station.
It is exemplary, the specific implementation of the first CQI index values of the wireless backhaul links of above-mentioned purpose base station feedback
Journey is as follows：First CQI index values are 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 values, because CPE is in purpose inside of base station therefore it can be appreciated that first
CQI index values are purpose base station and return the wireless backhaul links between base station, and then CPE directly sends out the first CQI index values
Passback base station is given, or the first CQI index values are first supplied to purpose base station (to belong to purpose inside of base station data to pass by CPE
It is defeated), by purpose base station by the first CQI index values between base station (such as passing through X2 interface) is sent to passback in a manner of data transfer
Base station.
Wherein, modulation system corresponding to the 2nd above-mentioned CQI index values is than modulation system corresponding to the first CQI index values
Order of modulation is low.
Preferably, the 2nd above-mentioned CQI indexes are modulation system corresponding to the first CQI indexes than the first CQI index values pair
The low one-level of order of modulation for the modulation system answered.
Optionally, when the order of modulation of modulation system corresponding to the first CQI indexes is 6, the 2nd above-mentioned CQI indexes pair
The modulation system answered two-stage lower than the order of modulation of modulation system corresponding to the first CQI index values, i.e. the 2nd CQI indexes are corresponding
Modulation system order of modulation be 2.
Specifically, with reference to following table 1, the table 1 gives the mapping between CQI indexes, modulation system and order of modulation
Relation.
Table 1
| CQI indexes | 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 values of the wireless backhaul links of purpose base station feedback are 12,
The order of modulation that the modulation system corresponding to 12 can be learnt is 6, it is determined that the corresponding modulation of the 2nd CQI index values gone out is small
In 6, the 2nd CQI index value between 1-9 value.
Further, in order to improve the reliability of data transfer, from above-mentioned table 1, the 2nd CQI index values are in 7-
Value between 9, it can so ensure modulation system corresponding to the 2nd CQI index values than modulation methods corresponding to the first CQI index values
The low one-level of order of modulation of formula.
It is further preferred that while the reliability of data transfer is ensured, in order to not reduce the bandwidth of transmission data, by
Above-mentioned table 1 understands that the 2nd CQI index values are 9, can so cause the 2nd CQI indexes to be adjusted corresponding to the first CQI indexes
The maximum of CQI index values corresponding to the low one-level of exponent number processed.
203rd, return base station and the first MCS index values are determined according to the 2nd CQI index values, and the first MCS index values are sent
To purpose base station.
Exemplary, directly the first MCS index values are sent into purpose base station in step 203, in order to purpose base
The modulation system according to corresponding to the first MCS index values of standing demodulates downlink data.
204th, return base station and downlink data is sent to purpose base station according to the first MCS index values.
It should be noted that it is referred to 3GPP (English full name for the specific implementation process in step 204：3rd
Generation Partnership Project, Chinese：Third generation partner program) regulation in standard, here no longer
Repeat.
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
The downlink data of purpose base station is defeated by, in the case where meeting CQI adjusting conditions, according to the wireless backhaul chain of purpose base station feedback
The first CQI index values on road determine the 2nd CQI index values；Modulation system is than the first CQI index values corresponding to 2nd CQI index values
The order of modulation of corresponding modulation system is low；CQI adjusting conditions include：The current radio resource service condition of passback base station is less than
Or equal to load-threshold, and the first CQI index values are in preset range；First MCS indexes are determined according to the 2nd CQI index values
Value, and the first MCS index values are sent to purpose base station；Downlink data is sent to purpose base station according to the first MCS index values.By
Tune of the modulation system than modulation system corresponding to the first CQI index values corresponding to 2nd CQI index values determined by we
Exponent number processed is low, and transmission reliability when being transmitted data using the relatively low order of modulation is higher, and antijamming capability is stronger, from
And make it that the probability that data retransmit, which occurs, to be reduced, and is also just reduced transmission delay, is improved efficiency of transmission.
Further alternative, this method also includes：
205th, when the current radio resource service condition of passback base station is more than load-threshold, or priority of purpose base station etc.
Level is less than threshold value, or the first CQI index values are not within a preset range, according to the first of the wireless backhaul links of purpose base station feedback
CQI index values determine the 2nd MCS index values.
Further, also included based on above-mentioned step 205 this method：.
206th, the 2nd MCS index values are sent to purpose base station.
207th, downlink data is sent to purpose base station according to the 2nd MCS index values.
It should be noted that it is referred to 3GPP (English full name for the specific implementation process in step 207：3rd
Generation Partnership Project, Chinese：Third generation partner program) regulation in standard, here no longer
Repeat.
The associated description in the embodiment of the transmission method based on downlink data corresponding to Fig. 3 is implemented to the present invention below
A kind of passback base station that example provides is introduced.The technical term related to above-described embodiment, concept etc. in following examples
Illustrate to be referred to the above embodiments, repeat no more here.
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
Module 42 and sending module 43 are managed, wherein：
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 conditions, according to the wireless backhaul chain of purpose base station feedback
The first CQI index values on road determine the 2nd CQI index values；Modulation system is than the first CQI index values corresponding to 2nd CQI index values
The order of modulation of corresponding modulation system is low；CQI adjusting conditions include：The current radio resource service condition of passback base station is less than
Or equal to load-threshold, and the first CQI index values are in preset range.
Processing module 42, it is additionally operable to determine the first MCS index values according to the 2nd CQI index values.
Sending module 43, for the first MCS index values to be sent to purpose base station.
Sending module 43, it is additionally operable to send downlink data to purpose base station according to the first MCS index values.
Preferably, modulation system corresponding to the 2nd above-mentioned CQI index values is than modulation system corresponding to the first CQI index values
The low one-level of order of modulation.
Optionally, when the order of modulation of modulation system corresponding to the first CQI indexes is 6, the 2nd above-mentioned CQI indexes pair
The modulation system answered two-stage lower than the order of modulation of modulation system corresponding to the first CQI index values, i.e. the 2nd CQI indexes are corresponding
Modulation system order of modulation be 2.
Specifically, with reference to following table 1, the table 1 gives the mapping between CQI indexes, modulation system and order of modulation
Relation.
Table 1
By above-mentioned table 1 it is known that if the first CQI index values of the wireless backhaul links of purpose base station feedback are 12,
The order of modulation that the modulation system corresponding to 12 can be learnt is 6, it is determined that the corresponding modulation of the 2nd CQI index values gone out is small
In 6, the 2nd CQI index value between 1-9 value.
Further, in order to improve the reliability of data transfer, from above-mentioned table 1, the 2nd CQI index values are in 7-
Value between 9, it can so ensure modulation system corresponding to the 2nd CQI index values than modulation methods corresponding to the first CQI index values
The low one-level of order of modulation of formula.
It is further preferred that while the reliability of data transfer is ensured, in order to not reduce the bandwidth of transmission data, by
Above-mentioned table 1 understands that the 2nd CQI index values are 9, can so cause the 2nd CQI indexes to be adjusted corresponding to the first CQI indexes
The maximum of CQI index values corresponding to the low one-level of exponent number processed.
Preferably, CQI adjusting conditions also include：The priority level of purpose base station is more than or equal to threshold value.
Optionally, processing module 42 is additionally operable to：
When the current radio resource service condition of passback base station is more than load-threshold, or the priority level of purpose base station is small
In threshold value, or the first CQI index values are 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 values.
Further alternative, above-mentioned sending module 43 is additionally operable to send the 2nd MCS index values to purpose base station；Also use
According to the 2nd MCS index values 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 that downlink data is transmitted between user service base station
Play a part of middle forwarding in journey.
Wherein, it is above-mentioned be less than or equal to include being less than, less than or equal to both of these case.
Exemplary, the service condition of above-mentioned Radio Resource includes but is not limited to：RB utilization rate, cpu busy percentage with
And RRC (English：Radio Resource Control, Chinese：Wireless heterogeneous networks) connection number.
It should be noted that downlink data is being sent to purpose base station according to the first MCS index values for sending module 43
Or the specific implementation process when sending downlink data to purpose base station according to the 2nd MCS index values is referred to 3GPP (English
Literary full name：3rd Generation Partnership Project, Chinese：Third generation partner program) rule in standard
It is fixed, repeat no more here.
Passback base station provided in an embodiment of the present invention, passback base station by receive core net send to be transmitted to purpose base
The downlink data stood, in the case where meeting CQI adjusting conditions, according to the first of the wireless backhaul links of purpose base station feedback
CQI index values determine the 2nd CQI index values；Modulation system corresponding to 2nd CQI index values corresponding to the first CQI index values than adjusting
The order of modulation of mode processed is low；CQI adjusting conditions include：The current radio resource service condition of base station is returned less than or equal to negative
Thresholding is carried, and the first CQI index values are in preset range；First MCS index values are determined according to the 2nd CQI index values, and will
First MCS index values are sent to purpose base station；Downlink data is sent to purpose base station according to the first MCS index values.Due to we
In determined by modulation system corresponding to the 2nd CQI index values than modulation system corresponding to the first CQI index values order of modulation
It is low, and transmission reliability when being transmitted data using the relatively low order of modulation is higher, antijamming capability 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, including：Processor, memory and communication interface, wherein：
Memory is used to store computer executed instructions, when returning base station operation, computing device memory storage
Computer executed instructions, so that passback base station performs the transmission method of the downlink data such as first aspect.
Exemplary, above-mentioned memory can 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..
Exemplary, above-mentioned communication interface is sent to the downlink data of purpose base station for receiving core net, the communication
Interface can be interface circuit.
Exemplary, above-mentioned processor can be central processing unit (Central Processing Unit, CPU), lead to
With processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit
(Application-Specific Integrated Circuit, ASIC), field programmable gate array (Field
Programmable Gate Array, FPGA) or other PLDs, transistor logic, hardware component or
Its any combination of person.It can realize or perform the various exemplary logic blocks with reference to described by present disclosure,
Module and circuit.The processor can also be the combination for realizing computing function, such as include one or more microprocessors group
Close, combination of DSP and microprocessor etc..
The embodiment of the present invention provides a kind of computer-readable storage medium, including computer instruction, when computer instruction is returning
When being run on base station so that passback base station performs the transmission method of the downlink data such as first aspect.
Exemplary, computer-readable recording medium can be any usable medium that computer can access or wrap
Containing data storage devices such as the integrated server of one or more usable mediums, data centers.The usable medium can be magnetic
Medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disc 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 performs the transmission method of the downlink data such as first aspect.
Exemplary, 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 convenient and succinct, can be as needed and by above-mentioned work(only with the division of above-mentioned each functional module for example, in practical application
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 completion
The all or part of function of description.The specific work process of the system, apparatus, and unit of foregoing description, it may be referred to foregoing side
Corresponding process in method embodiment, will not be repeated here.
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 division of logic function, can there is other dividing mode when actually realizing, such as multiple
Unit or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another
Point, shown or discussed mutual coupling or direct-coupling or communication connection can be by some interfaces, device or
The INDIRECT COUPLING of unit or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
More than, it is only embodiment of the invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of transmission method of downlink data, it is characterised in that methods described includes：
Return base station and receive the downlink data to be transmitted to purpose base station that core net is sent；
It is true according to the first CQI index values of the wireless backhaul links of purpose base station feedback in the case where meeting CQI adjusting conditions
Fixed 2nd CQI index values；Modulation system corresponding to the 2nd CQI index values is than modulation corresponding to the first CQI index values
The order of modulation of mode is low；The CQI adjusting conditions 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 values are in preset range；
First MCS index values are determined according to the 2nd CQI index values, and the first MCS index values are sent to purpose base
Stand；
The downlink data is sent to the purpose base station according to the first MCS index values.
2. according to the method for claim 1, it is characterised in that modulation system corresponding to the 2nd CQI index values is than the
The low one-level of order of modulation of modulation system corresponding to one CQI index values.
3. according to the method for claim 1, it is characterised in that the CQI adjusting conditions also include：The purpose base station
Priority level is more than or equal to threshold value.
4. according to the method for claim 1, it is characterised in that methods described also includes：
When the current radio resource service condition of passback base station is more than load-threshold, or the priority level of purpose base station is less than threshold
Value, or the first CQI index values are 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 values.
5. one kind passback base station, it is characterised in that including：
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 conditions, according to the of the wireless backhaul links of purpose base station feedback
One CQI index values determine the 2nd CQI index values；Modulation system is than the first CQI indexes corresponding to the 2nd CQI index values
The order of modulation of modulation system corresponding to value is low；The CQI adjusting conditions include：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 values are in preset range；
The processing module, it is additionally operable to determine the first MCS index values according to the 2nd CQI index values；
Sending module, for the first MCS index values to be sent to purpose base station；
The sending module, it is additionally operable to send the downlink data to the purpose base station according to the first MCS index values.
6. passback base station according to claim 5, it is characterised in that the CQI adjusting conditions also include：The purpose base
The priority level stood is more than or equal to threshold value.
7. passback base station according to claim 5, it is characterised in that the processing module is additionally operable to：
When the current radio resource service condition of passback base station is more than load-threshold, or the priority level of purpose base station is less than threshold
Value, or the first CQI index values are 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 values.
8. one kind passback base station, it is characterised in that including：Processor, memory and communication interface, wherein：
The memory is used to store computer executed instructions, when the base station is run, storage described in the computing device
The computer executed instructions of device storage, so that the base station performs the lower line number as any one of claim 1-4
According to transmission method.
9. a kind of computer-readable storage medium, it is characterised in that including computer instruction, when the computer instruction is in passback base station
During upper operation so that the passback base station performs the transmission method of the downlink data as any one of claim 1-4.
10. a kind of computer program product, it is characterised in that when the computer program product is run on computers, make
Obtain the transmission method that the computer performs the downlink data as any one of claim 1-4.
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| CN107800514B (en) | 2019-05-14 |
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