CN110266443A - Self-adapting regulation method, system, the device of cluster communication transmission mode - Google Patents
Self-adapting regulation method, system, the device of cluster communication transmission mode Download PDFInfo
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- CN110266443A CN110266443A CN201910724862.1A CN201910724862A CN110266443A CN 110266443 A CN110266443 A CN 110266443A CN 201910724862 A CN201910724862 A CN 201910724862A CN 110266443 A CN110266443 A CN 110266443A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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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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- 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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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Abstract
The invention belongs to trunking communicating technology fields, relate to self-adapting regulation method, system, the device of a kind of cluster communication transmission mode, it is intended to which solving the problems, such as that downlink modulation coding mode can not adaptively adjust at a distance from eNB according to UE causes the wasting of resources and reliability low.The method of the present invention includes: to obtain each parameter of colony terminal, and be based on downlink reference signal, service signal, obtains CQI measured value, CRC check value；CQI measured value is calibrated, the expectation adjustment amount of CQI value and CQI after being calibrated；When the absolute value of CQI expectation adjustment amount is greater than the judgement thresholding for reporting CQI, information and the transmission mode according to current cluster communication being reported, the transmission mode of cluster communication when for transmitting next time is obtained.The present invention can fast and effeciently determine downlink transmission mode, improve the handling capacity and reliability of system in the case where cluster UE does not have feeding back ACK/NACK.
Description
Technical field
The invention belongs to trunking communicating technology fields, and in particular to a kind of adaptive adjustment of cluster communication transmission mode
Method, system, device.
Background technique
In long term evolution (LTE, Long Term Evolution) technological system, down direction usually carry out towards
The group communication of the point-to-multipoint of cell.One of the downlink key technology of LTE AMC is that one kind for using on wireless channel is adaptive
Coding modulation technique (AMC, Adaptive Modulation and Coding), by adjusting the modulation of transmission of radio links
Mode and code rate, to ensure the transmission quality of link.
In LTE, AMC process is root after terminal (UE, User Equipment) passes through reception downlink public reference signal
Down channel quality measurement is carried out according to the reference signal, terminal feeds back channel quality information to base station by feedback channel
(eNB, evolution Node B), the confirmation message ACK/ that base station is fed back according to the channel quality information and terminal of feedback
NACK, to be dynamically selected suitable downlink modulation coding mode for subsequent downlink traffic transmission, to make to lead to next time
There is higher reliability and the accuracy of transmission to guarantee for letter transmission.When channel condition is poor, lesser modulation system is selected
With code rate；When channel condition is preferable, biggish modulation system is selected, thus while having taken into account reliable transmission, most
Bigization transmission rate.
However, above-mentioned AMC mode is no longer applicable in: since group service is to belong to a little in LTE broadband cluster communication system
The case where to the cluster downlink business of multiple spot, terminal no longer gives base station feedback CQI and downlink confirmation message ACK/NACK, base station side
It can not learn whether UE correctly demodulates the downlink data of transmission, be communicated next time so that base station can not more accurately determine
When downlink modulation coding mode.
Generally speaking, eNB is according to preconfigured downlink modulation coding mode in existing LTE group system, in group
When UE is close to eNB, it is possible to since preconfigured downlink modulation coding mode is too low, lead to the waste of radio spectrum resources；
And when group UE is far from eNB, and it is excessively high to be likely due to preconfigured downlink modulation coding mode, causes downlink parsing wrong
Accidentally, downlink business performance is influenced, user, which experiences, to be deteriorated.
Summary of the invention
In order to solve the above problem in the prior art, i.e. downlink modulation coding mode can not be according to UE at a distance from eNB
Adaptive adjustment leads to the wasting of resources and the low problem of reliability, the present invention provides a kind of cluster communication transmission mode from
Method of adjustment is adapted to, which includes:
Step S10, the judgement door for obtaining CQI value used by the current cluster communications of colony terminal, reporting CQI
The BLER pre-determined threshold and preset CQI adjustment amount accordingly that limit, CQI are calibrated；
Step S20, the downlink reference signal based on acquisition, the CQI measured value of Acquisition channel；To the downlink business letter of acquisition
It number is parsed, obtains CRC check value；
Step S30, BLER pre-determined threshold and corresponding default CQI adjustment amount, current cluster based on CQI calibration
CQI value used by communications calibrates the CQI measured value according to CRC check value, the CQI value after being calibrated
And CQI it is expected adjustment amount；
Step S40, judges whether the absolute value of the CQI expectation adjustment amount is greater than the judgement thresholding for reporting CQI, is
The CQI value after the calibration is then reported to base station；Otherwise the transmission mode for using preset initial cluster to communicate is as next
The transmission mode of cluster communication when secondary transmission；
Step S50, transmission mode of the base station based on CQI value and current cluster communication after the calibration reported, is obtained
Take the transmission mode of cluster communication when transmit next time.
In some preferred embodiments, the CQI measured value in the channel is that broadband CQI measured value or subband CQI are measured
Value.
In some preferred embodiments, in step S20 " the downlink business signal of acquisition is parsed, the school CRC is obtained
Test value ", method are as follows:
Physical layer parsing is carried out to the downlink business signal of acquisition, parsing result is correct, then CRC check value is set to first
Preset value；Parsing result is incorrect, then CRC check value is set to the second preset value.
In some preferred embodiments, first preset value is 0, and second preset value is 1.
In some preferred embodiments, " based on the CQI BLER pre-determined threshold calibrated and accordingly in step S30
Default CQI adjustment amount, CQI value used by current cluster communications, surveyed according to CQI of the CRC check value to the channel
Magnitude is calibrated, and the CQI value and CQI after being calibrated it is expected adjustment amount ", method are as follows:
Step S31 calculates the difference of CQI value used by the current cluster communications Yu the CQI measured value, and
According to pre-set interval belonging to the difference and BLER value corresponding relationship, corresponding BLER target value is obtained；
Step S32, based on the BLER target value, CRC check value, CQI the BLER pre-determined threshold calibrated and accordingly
Default CQI adjustment amount, calculates this CQI single adjustment amount；
Step S33, the CQI adjustment amount based on this described CQI single adjustment amount and last time obtain the accumulative of CQI
Adjustment amount；
Step S34, using the sum of the accumulative adjustment amount of the CQI and the CQI measured value as the CQI value after calibration, institute
CQI value after stating calibration subtracts expectation adjustment amount of the difference as CQI of CQI value used by current cluster communications.
In some preferred embodiments, the CQI single adjustment amount, calculation method are as follows:
Wherein, TCQIThe single adjustment amount of CQI is represented, BLER represents BLER target value, and CRC represents CRC check value, DCQIFor
Preset CQI single adjusting step.
Another aspect of the present invention proposes a kind of self-adapted adjustment system of cluster communication transmission mode, this is adaptive
Adjustment system includes parameter acquisition module, CQI measurement module, CRC check module, CQI calibration module, reports discrimination module, adjusts
Mould preparation block；
The parameter acquisition module, be configured to obtain colony terminal current cluster communications used by CQI value, on
Report the BLER pre-determined threshold and corresponding default CQI adjustment amount for judging thresholding, CQI calibration of CQI；
The CQI measurement module is configured to the downlink reference signal obtained, the CQI measured value of Acquisition channel；
The CRC check module is configured to parse the downlink business signal of acquisition, obtains CRC check value；
The CQI calibration module is configured to the BLER pre-determined threshold of the CQI calibration and presets CQI accordingly
CQI value used by adjustment amount, current cluster communications is calibrated the CQI measured value according to CRC check value, is obtained
CQI value and CQI after must calibrating it is expected adjustment amount；
It is described to report discrimination module, it is configured to judge whether the absolute value of the CQI expectation adjustment amount is greater than described report
The judgement thresholding of CQI is that the CQI value after the calibration is reported to base station；
The adjustment module, be configured to base station based on after the calibration reported CQI value and current cluster communication
Transmission mode obtains the transmission mode of cluster communication when for transmitting next time.
The third aspect of the present invention proposes a kind of storage device, wherein be stored with a plurality of program, described program be suitable for by
Processor loads and executes the self-adapting regulation method to realize above-mentioned cluster communication transmission mode.
The fourth aspect of the present invention proposes a kind of processing unit, including processor, storage device；The processor is fitted
In each program of execution；The storage device is suitable for storing a plurality of program；Described program be suitable for loaded by processor and executed with
Realize the self-adapting regulation method of above-mentioned cluster communication transmission mode.
Beneficial effects of the present invention:
The self-adapting regulation method of cluster communication transmission mode of the present invention can not have feeding back ACK/NACK feelings in cluster UE
Under condition, base station still can fast and effeciently determine downlink transmission mode, improve the handling capacity and reliability of system.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the flow diagram of the self-adapting regulation method of cluster communication transmission mode of the present invention.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is only used for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to just
Part relevant to related invention is illustrated only in description, attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of self-adapting regulation method of cluster communication transmission mode of the invention, the self-adapting regulation method include:
Step S10, the judgement door for obtaining CQI value used by the current cluster communications of colony terminal, reporting CQI
The BLER pre-determined threshold and preset CQI adjustment amount accordingly that limit, CQI are calibrated；
Step S20, the downlink reference signal based on acquisition, the CQI measured value of Acquisition channel；To the downlink business letter of acquisition
It number is parsed, obtains CRC check value；
Step S30, BLER pre-determined threshold and corresponding default CQI adjustment amount, current cluster based on CQI calibration
CQI value used by communications calibrates the CQI measured value according to CRC check value, the CQI value after being calibrated
And CQI it is expected adjustment amount；
Step S40, judges whether the absolute value of the CQI expectation adjustment amount is greater than the judgement thresholding for reporting CQI, is
The CQI value after the calibration is then reported to base station；Otherwise the transmission mode for using preset initial cluster to communicate is as next
The transmission mode of cluster communication when secondary transmission；
Step S50, transmission mode of the base station based on CQI value and current cluster communication after the calibration reported, is obtained
Take the transmission mode of cluster communication when transmit next time.
In order to which the self-adapting regulation method more clearly to cluster communication transmission mode of the present invention is illustrated, below with reference to
Fig. 1 is unfolded to be described in detail to step each in embodiment of the present invention method.
The self-adapting regulation method of the cluster communication transmission mode of an embodiment of the present invention, including step S10- step
S50, each step are described in detail as follows:
Step S10, the judgement door for obtaining CQI value used by the current cluster communications of colony terminal, reporting CQI
The BLER pre-determined threshold and preset CQI adjustment amount accordingly that limit, CQI are calibrated.
Step S20, the downlink reference signal based on acquisition, the CQI measured value of Acquisition channel；To the downlink business letter of acquisition
It number is parsed, obtains CRC check value.
The CQI measured value in channel is broadband CQI measured value or subband CQI measured value.
" the downlink business signal of acquisition being parsed, CRC check value is obtained ", method are as follows:
Physical layer parsing is carried out to the downlink business signal of acquisition, parsing result is correct, then CRC check value is set to first
Preset value；Parsing result is incorrect, then CRC check value is set to the second preset value.
First preset value is 0, and the second preset value is 1:
CRC=0, represents that parsing result is correct, and verification passes through；CRC=1, it is incorrect to represent parsing result, verifies obstructed
It crosses.
Step S30, BLER pre-determined threshold and corresponding default CQI adjustment amount, current cluster based on CQI calibration
CQI value used by communications calibrates the CQI measured value according to CRC check value, the CQI value after being calibrated
And CQI it is expected adjustment amount.
Step S31 calculates the difference of CQI value used by the current cluster communications Yu the CQI measured value, and
According to pre-set interval belonging to the difference and BLER value corresponding relationship, corresponding BLER target value is obtained.
The difference for calculating the transmission mode of current cluster communication and the CQI measured value of step S20, according to belonging to the difference
The corresponding relationship of pre-set interval and target bler values, available BLER target value.In one embodiment of the invention, belonging to difference
Pre-set interval and target bler values corresponding relationship it is as shown in table 1:
Table 1
In upper table, CQI measured value and the difference with CQI value used by current cluster communications that X is step S20.
In practical applications, specific value is not limited only to this.
Step S32, based on the BLER target value, CRC check value, CQI the BLER pre-determined threshold calibrated and accordingly
Default CQI adjustment amount, calculates this CQI single adjustment amount.
CQI single adjustment amount, shown in calculation method such as formula (1):
Wherein, TCQIThe single adjustment amount of CQI is represented, BLER represents BLER target value, and CRC represents CRC check value, DCQIFor
Preset CQI single adjusting step.
The case where being equal to 1 for BLER target value, as CRC=1, the single adjustment amount of CQI is equal to 0；As CRC=0,
The single adjustment amount of CQI is equal to preset adjusting step.
Step S33, the CQI adjustment amount based on this described CQI single adjustment amount and last time obtain the accumulative of CQI
Adjustment amount.
CQI accumulates adjustment amount, shown in calculation method such as formula (2):
L'CQI=TCQI+LCQIFormula (2)
Wherein, L'CQIAdjustment amount, T are accumulated for CQICQIFor the CQI single adjustment amount that this is calculated, LCQIFor the CQI of history
Accumulate adjustment amount.
When accumulating adjustment amount for no history CQI, it is zero that setting CQI, which accumulates adjustment amount, and this CQI is accumulated and is adjusted
It measures and accumulates adjustment amount as history CQI when calculating next time.
Step S34, using the sum of the accumulative adjustment amount of the CQI and the CQI measured value as the CQI value after calibration, institute
CQI value after stating calibration subtracts expectation adjustment amount of the difference as CQI of CQI value used by current cluster communications.
Step S40, judges whether the absolute value of the CQI expectation adjustment amount is greater than the judgement thresholding for reporting CQI, is
The CQI value after the calibration is then reported to base station；Otherwise the transmission mode for using preset initial cluster to communicate is as next
The transmission mode of cluster communication when secondary transmission.
When the absolute value of CQI expectation adjustment amount, which is greater than preset CQI, reports thresholding, the CQI after calibration is passed through into feedback
Channel is reported to base station.Preset CQI reports the selection of thresholding to will affect the feedback overhead of system and the performance of system.Cause
This, can the requirement according to system to feedback overhead and the requirement to performance chosen to compromise.
Step S50, transmission mode of the base station based on CQI value and current cluster communication after the calibration reported, is obtained
Take the transmission mode of cluster communication when transmit next time.
The transmission that CQI value and current cluster after the calibration that base station is reported according to terminal in the group received communicate
Mode determines the transmission mode of cluster communication when transmitting next time, can be according to system requirements, in throughput of system and reliability
Aspect compromise selects the transmission mode of suitable cluster communication.
For example, can choose the minimum value of all CQI reported in cluster user, to guarantee that all cluster users can be just
Downlink service data is really received, guarantees system reliability；Also it can choose the average value of all CQI reported in cluster user,
At this point, about half of user can be properly received downlink business signal；It is also possible to the distribution according to the group UE CQI reported
Situation selects the transmission mode of suitable cluster communication.In practical application, the selection method of the transmission mode of cluster communication is not
It is confined to above-mentioned several method, this is no longer going to repeat them.
When CQI value after the calibration that UE is reported in the cluster group has not been obtained in base station, base station selected one it is preset just
The transmission mode of initial set group communication carries out the transmission of downlink group service.
When base station, long-time does not collect the counter time-out for the update CQI value that UE in the cluster group is reported, base station selected
The transmission mode of one preset initial cluster communication carries out the transmission of downlink group service.Counter timeout threshold is one pre-
If value, can need to be arranged according to system.
The self-adapted adjustment system of the cluster communication transmission mode of second embodiment of the invention, the self-adapted adjustment system packet
It includes parameter acquisition module, CQI measurement module, CRC check module, CQI calibration module, report discrimination module, adjustment module；
The parameter acquisition module, be configured to obtain colony terminal current cluster communications used by CQI value, on
Report the BLER pre-determined threshold and corresponding default CQI adjustment amount for judging thresholding, CQI calibration of CQI；
The CQI measurement module is configured to the downlink reference signal obtained, the CQI measured value of Acquisition channel；
The CRC check module is configured to parse the downlink business signal of acquisition, obtains CRC check value；
The CQI calibration module is configured to the BLER pre-determined threshold of the CQI calibration and presets CQI accordingly
CQI value used by adjustment amount, current cluster communications is calibrated the CQI measured value according to CRC check value, is obtained
CQI value and CQI after must calibrating it is expected adjustment amount；
It is described to report discrimination module, it is configured to judge whether the absolute value of the CQI expectation adjustment amount is greater than described report
The judgement thresholding of CQI is that the CQI value after the calibration is reported to base station；
The adjustment module, be configured to base station based on after the calibration reported CQI value and current cluster communication
Transmission mode obtains the transmission mode of cluster communication when for transmitting next time.
Person of ordinary skill in the field can be understood that, for convenience and simplicity of description, foregoing description
The specific work process of system and related explanation, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
It should be noted that the self-adapted adjustment system of cluster communication transmission mode provided by the above embodiment, only more than
The division for stating each functional module carries out for example, in practical applications, can according to need and by above-mentioned function distribution by not
With functional module complete, i.e., by the embodiment of the present invention module or step decompose or combine again, for example, above-mentioned reality
The module for applying example can be merged into a module, can also be further split into multiple submodule, described above complete to complete
Portion or partial function.For module involved in the embodiment of the present invention, the title of step, it is only for distinguish modules
Or step, it is not intended as inappropriate limitation of the present invention.
A kind of storage device of third embodiment of the invention, wherein being stored with a plurality of program, described program is suitable for by handling
Device loads and executes the self-adapting regulation method to realize above-mentioned cluster communication transmission mode.
A kind of processing unit of fourth embodiment of the invention, including processor, storage device；Processor is adapted for carrying out each
Program；Storage device is suitable for storing a plurality of program；Described program is suitable for being loaded by processor and being executed to realize above-mentioned collection
The self-adapting regulation method of group communication transmission mode.
Person of ordinary skill in the field can be understood that, for convenience and simplicity of description, foregoing description
The specific work process and related explanation of storage device, processing unit, can refer to corresponding processes in the foregoing method embodiment,
Details are not described herein.
Those skilled in the art should be able to recognize that, mould described in conjunction with the examples disclosed in the embodiments of the present disclosure
Block, method and step, can be realized with electronic hardware, computer software, or a combination of the two, software module, method and step pair
The program answered can be placed in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electric erasable and can compile
Any other form of storage well known in journey ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field is situated between
In matter.In order to clearly demonstrate the interchangeability of electronic hardware and software, in the above description according to function generally
Describe each exemplary composition and step.These functions are executed actually with electronic hardware or software mode, depend on technology
The specific application and design constraint of scheme.Those skilled in the art can carry out using distinct methods each specific application
Realize described function, but such implementation should not be considered as beyond the scope of the present invention.
Term " first ", " second " etc. are to be used to distinguish similar objects, rather than be used to describe or indicate specific suitable
Sequence or precedence.
Term " includes " or any other like term are intended to cover non-exclusive inclusion, so that including a system
Process, method, article or equipment/device of column element not only includes those elements, but also including being not explicitly listed
Other elements, or further include the intrinsic element of these process, method, article or equipment/devices.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (9)
1. a kind of self-adapting regulation method of cluster communication transmission mode, which is characterized in that the self-adapting regulation method includes:
Step S10, judgement thresholding, the CQI for obtaining CQI value used by the current cluster communications of colony terminal, reporting CQI
The BLER pre-determined threshold of calibration and accordingly default CQI adjustment amount；
Step S20, the downlink reference signal based on acquisition, the CQI measured value of Acquisition channel；To the downlink business signal of acquisition into
Row parsing, obtains CRC check value；
Step S30, BLER pre-determined threshold and corresponding default CQI adjustment amount, current cluster communication based on CQI calibration
CQI value used by transmitting calibrates the CQI measured value according to CRC check value, CQI value after being calibrated and
CQI it is expected adjustment amount；
Step S40, judges whether the absolute value of the CQI expectation adjustment amount is greater than the judgement thresholding for reporting CQI, then will be
CQI value after the calibration is reported to base station；Otherwise the transmission mode for using preset initial cluster to communicate is as passing next time
The transmission mode of cluster communication when defeated；
Step S50, transmission mode of the base station based on CQI value and current cluster communication after the calibration reported, obtains and uses
The transmission mode of cluster communication when transmit next time.
2. the self-adapting regulation method of cluster communication transmission mode according to claim 1, which is characterized in that the channel
CQI measured value be broadband CQI measured value or subband CQI measured value.
3. the self-adapting regulation method of cluster communication transmission mode according to claim 1, which is characterized in that step S20
In " the downlink business signal of acquisition is parsed, obtain CRC check value ", method are as follows:
Physical layer parsing is carried out to the downlink business signal of acquisition, parsing result is correct, then CRC check value is set to first and preset
Value；Parsing result is incorrect, then CRC check value is set to the second preset value.
4. the self-adapting regulation method of cluster communication transmission mode according to claim 3, which is characterized in that described first
Preset value is 0, and second preset value is 1.
5. the self-adapting regulation method of cluster communication transmission mode according to claim 1, which is characterized in that step S30
In " BLER pre-determined threshold based on CQI calibration and default CQI adjustment amount, current cluster communications are adopted accordingly
CQI value calibrates the CQI measured value in the channel according to CRC check value, CQI value and CQI after being calibrated
It is expected that adjustment amount ", method are as follows:
Step S31, calculates the difference of CQI value used by the current cluster communications Yu the CQI measured value, and according to
Pre-set interval belonging to the difference and BLER value corresponding relationship, obtain corresponding BLER target value；
Step S32, based on the BLER target value, CRC check value, the BLER pre-determined threshold of CQI calibration and corresponding default
CQI adjustment amount calculates this CQI single adjustment amount；
Step S33, the CQI adjustment amount based on this described CQI single adjustment amount and last time, obtains the accumulative adjustment of CQI
Amount；
Step S34, using the sum of the accumulative adjustment amount of the CQI and the CQI measured value as the CQI value after calibration, the school
CQI value after standard subtracts expectation adjustment amount of the difference as CQI of CQI value used by current cluster communications.
6. the self-adapting regulation method of cluster communication transmission mode according to claim 5, which is characterized in that the CQI
Single adjustment amount, calculation method are as follows:
Wherein, TCQIThe single adjustment amount of CQI is represented, BLER represents BLER target value, and CRC represents CRC check value, DCQIIt is default
CQI single adjusting step.
7. a kind of self-adapted adjustment system of cluster communication transmission mode, which is characterized in that the self-adapted adjustment system includes ginseng
Number obtains module, CQI measurement module, CRC check module, CQI calibration module, reports discrimination module, adjustment module；
The parameter acquisition module is configured to CQI value used by obtaining the current cluster communications of colony terminal, reports
The BLER pre-determined threshold and corresponding default CQI adjustment amount for judging thresholding, CQI calibration of CQI；
The CQI measurement module is configured to the downlink reference signal obtained, the CQI measured value of Acquisition channel；
The CRC check module is configured to parse the downlink business signal of acquisition, obtains CRC check value；
The CQI calibration module, the BLER pre-determined threshold for being configured to the CQI calibration and default CQI adjustment accordingly
CQI value used by amount, current cluster communications calibrates the CQI measured value according to CRC check value, obtains school
CQI value and CQI after standard it is expected adjustment amount；
It is described to report discrimination module, it is configured to judge the absolute value of the CQI expectation adjustment amount reports CQI's described in whether being greater than
Judge thresholding, be, the CQI value after the calibration is reported to base station；
The adjustment module is configured to transmission of the base station based on CQI value and current cluster communication after the calibration reported
Mode obtains the transmission mode of cluster communication when for transmitting next time.
8. a kind of storage device, wherein being stored with a plurality of program, which is characterized in that described program is suitable for being loaded and being held by processor
It goes to realize the self-adapting regulation method of cluster communication transmission mode described in any one of claims 1-6.
9. a kind of processing unit, including
Processor is adapted for carrying out each program；And
Storage device is suitable for storing a plurality of program；
It is characterized in that, described program is suitable for being loaded by processor and being executed to realize:
The self-adapting regulation method of cluster communication transmission mode described in any one of claims 1-6.
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| CN201910724862.1A CN110266443B (en) | 2019-08-07 | 2019-08-07 | Self-adaptive adjustment method, system and device for trunking communication transmission mode |
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| CN201910724862.1A CN110266443B (en) | 2019-08-07 | 2019-08-07 | Self-adaptive adjustment method, system and device for trunking communication transmission mode |
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