CN104184568B - The data transmission method and system of communication system - Google Patents
The data transmission method and system of communication system Download PDFInfo
- Publication number
- CN104184568B CN104184568B CN201410453915.8A CN201410453915A CN104184568B CN 104184568 B CN104184568 B CN 104184568B CN 201410453915 A CN201410453915 A CN 201410453915A CN 104184568 B CN104184568 B CN 104184568B
- Authority
- CN
- China
- Prior art keywords
- data block
- upper layer
- reception
- layer data
- feedback
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of data transmission method of communication system and system, methods described includes：After transmitting terminal receives upper layer data block, the reception feedback of receiving terminal in default historical period is transferred, the reception is fed back to affirmative acknowledgement or negative response；The distributed intelligence of affirmative acknowledgement and/or negative response in the reception feedback transferred is obtained, and obtains number of retransmissions corresponding with the distributed intelligence；Using the number of retransmissions as the transmission times of the upper layer data block, and the upper layer data block is transmitted to the receiving terminal by the transmitting terminal.Implement the method and system of the present invention, influence of the receiving terminal to the instant reception feedback of the upper layer data to transmission times can be reduced, effectively influence of the processing delay of reduction transmitting terminal and receiving terminal to channel delay, reduces communication delay, improves link-quality and telecommunication service quality.
Description
Technical field
The present invention relates to communication technical field, the data transmission method and system of more particularly to a kind of communication system.
Background technology
HARQ (Hybrid Automatic Repeat Request, mixing are widely used in 3G and 4G GSMs
HARQ) physical layer retransmission technology, when receiver physical layer detects data transmission fault, it would indicate that emitter enters
Row physical layer data is retransmitted.When receiver receives re-transmission data, the data for retransmitting data with the last time receives are subjected to joint solution
Code, improves demodulation performance.
The data block of HARQ upper layer transfers, first passes through bottom channel coding, is stored in data buffer storage.When sending new data
Afterwards, the feedback of receiver will be waited.If ACK then removes buffer area data, data re-transmission is otherwise carried out.
HARQ realization is interacted based on the efficient information between receiver and emitter, but the re-transmission of HARQ data increase
Communication delay, causes radio link quality poor, reduces telecommunication service quality.
The content of the invention
Based on this, it is necessary to depend on immediate feedback for above-mentioned HARQ data, and add communication delay, cause wireless
Link-quality is poor, and there is provided a kind of data transmission method of communication system and system for the problem of reducing telecommunication service quality.
A kind of data transmission method of communication system, comprises the following steps：
After transmitting terminal receives upper layer data block, the reception feedback of receiving terminal in default historical period is transferred, it is described
Reception is fed back to affirmative acknowledgement or negative response；
The distributed intelligence of affirmative acknowledgement and/or negative response in the reception feedback transferred is obtained, and is obtained and described point
The corresponding number of retransmissions of cloth information；
Using the number of retransmissions as the transmission times of the upper layer data block, and by the transmitting terminal to the receiving terminal
Transmit the upper layer data block.
A kind of data transmission system of communication system, including：
Acquisition module is fed back, for after transmitting terminal receives upper layer data block, transferring reception in default historical period
The reception feedback at end, the reception is fed back to affirmative acknowledgement or negative response；
Number of times acquisition module, for obtaining the distribution letter of affirmative acknowledgement and/or negative response in the reception feedback transferred
Breath, and obtain number of retransmissions corresponding with the distributed intelligence；
Delivery module, sends for the transmission times using the number of retransmissions as the upper layer data block, and by described
Hold to the receiving terminal and transmit the upper layer data block.
The data transmission method and system of above-mentioned communication system, after transmitting terminal receives upper layer data block, are transferred default
Historical period in receiving terminal reception feedback, and according to transfer reception feedback determine upper layer data block number of retransmissions, enter
And using the number of retransmissions as the transmission times of the upper layer data block, and institute is transmitted to the receiving terminal by the transmitting terminal
State upper layer data block.Influence of the receiving terminal to the instant reception feedback of the upper layer data to transmission times, Jin Eryou can be reduced
Influence of the processing delay of effect reduction transmitting terminal and receiving terminal to channel delay, reduces communication delay, improves link-quality and logical
Telecommunications services quality.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the data transmission method first embodiment of communication system of the present invention；
Fig. 2 is the schematic flow sheet of the data transmission method second embodiment of communication system of the present invention；
Fig. 3 is the schematic flow sheet of the embodiment of data transmission method the 3rd of communication system of the present invention；
Fig. 4 is the schematic flow sheet of the embodiment of data transmission method the 4th of communication system of the present invention；
Fig. 5 is the structural representation of the data transmission system first embodiment of communication system of the present invention；
Fig. 6 is the first effect diagram of the data transmission method of communication system of the present invention；
Fig. 7 is the second effect diagram of the data transmission method of communication system of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, Fig. 1 is the flow signal of the data transmission method first embodiment of the communication system of the present invention
Figure.
The data transmission method of the communication system of present embodiment comprises the following steps：
Step S101, after transmitting terminal receives upper layer data block, transfers the reception of receiving terminal in default historical period
Feedback, the reception is fed back to affirmative acknowledgement or negative response.
Step S102, obtains the distributed intelligence of affirmative acknowledgement and/or negative response in the reception feedback transferred, and obtain
Number of retransmissions corresponding with the distributed intelligence.
Step S103, using the number of retransmissions as the transmission times of the upper layer data block, and by the transmitting terminal to
The receiving terminal transmits the upper layer data block.
Present embodiment, after transmitting terminal receives upper layer data block, transfers connecing for receiving terminal in default historical period
Receive feedback, and according to transfer reception feedback determine upper layer data block number of retransmissions, and then using the number of retransmissions be described
The transmission times of upper layer data block, and the upper layer data block is transmitted to the receiving terminal by the transmitting terminal.It can reduce and connect
Receiving end feeds back the influence to transmission times to the instant reception of the upper layer data, and then effectively reduces transmitting terminal and receiving terminal
Influence of the processing delay to channel delay, reduces communication delay, improves link-quality and telecommunication service quality.
Wherein, for step S101, the upper layer data block is transferred to the transmitting terminal by the upper layer module of transmitting terminal.Institute
State transmitting terminal preferably emitter, ACK (Acknowledgement confirms character), i.e. affirmative acknowledgement, in data communication,
Receiving station issues a kind of transmission class control character of dispatching station.Represent that the data sent have confirmed that reception is errorless.NACK
(Negative Acknowledgement), i.e. negative response, in data communication, receiving station issues a kind of transmission of dispatching station
Class control character.Represent the Data reception errors sent.The receiving terminal is properly received after the upper layer data block, then is fed back
ACK is to the transmitting terminal, if the receiving terminal is to the upper layer data block reception failure, feedback NACK to the transmitting terminal.
Further, the preset period of time before the historical period is preferably the transmitting terminal transmission upper layer data block.
10 seconds, 10 minutes, 1 hour or other periods before the upper layer data block as described in sending.
In one embodiment, it is further comprising the steps of before the transmitting terminal receives the upper layer data block：
The reception feedback of the receiving terminal is received in units of preset period of time.
The reception feedback correspondence preset period of time of reception is stored, received as in the default historical period
The reception feedback at end.
The present embodiment, receives the reception feedback i.e. correspondence reception time storage of receiving terminal, can be the upper number of plies to be sent
Foundation is provided according to the redundancy versions number of block.
In another embodiment, it is described after transmitting terminal receives upper layer data block, transfer in default historical period
The step of reception of receiving terminal is fed back comprises the following steps：
After the transmitting terminal receives the upper layer data block, sent once to the receiving terminal by the transmitting terminal
The upper layer data block.
Reception of the receiving terminal to the upper layer data block is received to feed back.
If the reception is fed back to negative response, the reception feedback of receiving terminal in default historical period is transferred.
If the reception is fed back to affirmative acknowledgement, the transmission to the upper layer data block is terminated.
Present embodiment, confirms that closed-loop adaptation mode is transmitted to upper layer data block, receiving terminal need not enter by having
Row data caching process, it is possible to decrease receiving terminal complexity.
For step S102, it is preferable that the distributed intelligence is that affirmative acknowledgement and/or negative response are anti-in the reception transferred
Between distribution situation in feedback, such as proportion, two adjacent affirmative acknowledgements (or negative response) negative response (or certainly should
Answer) cumulative distribution function of number, and/or, X negative response (or affirmative acknowledgement) receives in Y of the reception feedback transferred
The corresponding probability-distribution function of proportion in feedback, and/or, a reception is fed back to negative response in the reception feedback transferred
K-th after (affirmative acknowledgement) receives the probability of happening that feedback is still negative response (or affirmative acknowledgement).The transmission time of acquisition
Number is identical with the redundancy versions number of the upper layer data block.The transmission times are preferably default transmission cycle (acquiescence)
Interior transmission times.
Further, can proportion and transmission in the data feedback of acquisition by affirmative acknowledgement and/or negative response
Corresponding relation between number of times, obtains the transmission times of the upper layer data block, can also be existed by affirmative acknowledgement and/or negative response
The corresponding relation between corresponding distribution function value and transmission times in the data feedback of acquisition, obtains the biography of the upper layer data block
Send number of times.
In one embodiment, the distributed intelligence of affirmative acknowledgement and/or negative response in the reception feedback transferred is obtained,
And the step of acquisition number of retransmissions corresponding with the distributed intelligence comprises the following steps：
Affirmative acknowledgement and/or negative response in the reception feedback transferred is converted into preset characters, and by feedback time
Sequencing arrangement conversion obtained by preset characters, generate feedback sequence.
Corresponding distributed intelligence is generated according to the feedback sequence, the distributed intelligence is included two in the reception feedback transferred
The cumulative distribution function of negative response number between individual adjacent affirmative acknowledgement, and/or, X negative response is in the reception transferred
Y of feedback receives the corresponding probability-distribution function of proportion in feedback, and/or, a reception in the reception feedback transferred
It is fed back to the k-th after negative response and receives the probability of happening that feedback is still negative response, X, Y and K is more than or equal to 1
Integer, X be less than or equal to Y.
Obtain connect corresponding with the cumulative distribution function in the distributed intelligence, probability-distribution function, and/or probability of happening
Receive error rate.
According to the default corresponding relation received between error rate and number of retransmissions, obtain corresponding heavy with the reception error rate
Pass number of times.
The present embodiment, based on the sequence of affirmative acknowledgement and/or negative response is included, can calculate to a nicety the upper layer data
The transmission times of block, and then influence of the processing delay of transmitting terminal and receiving terminal to channel delay can be effectively reduced, greatly subtract
Few communication delay, is greatly enhanced link-quality and telecommunication service quality.
Preferably, affirmative acknowledgement can be represented with " 0 ", negative response is represented with " 1 ",
In another embodiment, the distribution letter of affirmative acknowledgement and/or negative response in the reception feedback transferred is obtained
The step of ceasing, and obtain number of retransmissions corresponding with the distributed intelligence comprises the following steps：
It is the distributed intelligence to calculate probability of happening of the negative response in the feedback of acquisition.
According to the probability of happening and the corresponding relation of number of retransmissions, re-transmission time corresponding with the probability of happening calculated is obtained
Number.
The present embodiment, can upper layer data described in quick obtaining by probability of happening of the negative response in the feedback of acquisition
The transmission times of block.And then influence of the processing delay of transmitting terminal and receiving terminal to channel delay can be effectively reduced, greatly subtract
Few communication delay, is greatly enhanced link-quality and telecommunication service quality.
Further, the ACK/NACK amounts that default first historical period inner receiver feeds back are counted, works as negative
Response is when proportion is more than certain threshold value during all receptions are fed back, then automatically within next transmission cycle by number of retransmissions
Plus 1, until number of retransmissions is maximum retransmission.When negative response, proportion is less than certain threshold value in all data feedbacks
When, then number of retransmissions is subtracted 1 within next transmission cycle, until number of retransmissions is 1.
For step S103, the number of retransmissions is M, then is transmitted by the transmitting terminal to the receiving terminal described in M times
Upper layer data block.
In one embodiment, using the number of retransmissions as the transmission times of the upper layer data block, and the hair is passed through
The step of sending end transmits the upper layer data block to the receiving terminal comprises the following steps：
Using the number of retransmissions as the transmission times of the upper layer data block, and by the transmitting terminal to the receiving terminal
Transmit the upper layer data block.
After the transmission of the upper layer data block is completed, the data block of caching is removed.
The present embodiment, after the transmission of the upper layer data block is completed, removes the data block of caching, can further reduce letter
Road time delay.
Preferably, removing is data cached to be data cached in receiver.
In another embodiment, it is described after transmitting terminal receives upper layer data block, transfer in default historical period
The step of reception of receiving terminal is fed back comprises the following steps：
Whether after transmitting terminal receives upper layer data block, it is that the transmitting terminal had been transmitted to judge the upper layer data block
Data block.
If so, then passing through the transmitting terminal using default maximum retransmission as the transmission times of the upper layer data block
The upper layer data block is transmitted to the receiving terminal, after the transmission of the upper layer data block is completed, the data block of caching is removed.
If it is not, then transfer receiving terminal in default historical period reception feedback, and it is described using the number of retransmissions as
The transmission times of the upper layer data block, and by the transmitting terminal to the receiving terminal transmit the upper layer data block the step of
In：
Using the number of retransmissions as the transmission times of the upper layer data block, and by the transmitting terminal to the receiving terminal
The upper layer data block is transmitted, after the transmission of the upper layer data block is completed, the data block of caching is preserved.
The present embodiment, the upper layer data block is transmitted by way of having and confirming open loop, can be confirmed the time delay retransmitted
Cached with sweetly disposition, and then active balance communication efficiency and stability.
The data transmission method of the communication system of the present invention, the data being preferably applicable under synchronous satellite environment are passed
It is defeated, it is equally applicable to the data transfer under other communication environments.
Referring to Fig. 2, Fig. 2 is the flow signal of the data transmission method second embodiment of the communication system of the present invention
Figure.
The data transmission method of the communication system of present embodiment, transmitting terminal sets historical period as TwindowsNumber
According to the reception total time of feedback, it is not equal to 1, error rate threshold is ThupFor constant, number of retransmissions is NT, initial value is 1 or default
Constant, specifically may include following steps：
Step S201, K reception is to the reception feedback after upper layer data block, transferred before the K moment in preset period of time.
Step S202, performs step S203 if it can be deployed into, and step S205 is performed if it can not be deployed into.
Step S203, obtains NACK number e (k) in the reception feedback.
Step S204, whenWhen, NT=NT+ 1, perform step S206.
Step S205, NTIt is constant, perform step S206.
Step S206, with NTTo be ultimately delivered number of times, the upper number of plies is transmitted to the receiving terminal by the transmitting terminal
According to block, it is sent and removes caching, and return to step S201.
The present embodiment, transmission times are predicted by iteration, are carried out without the data transmission for confirming closed-loop fashion, can be quick and precisely
Ground determines transmission times, after the transmission of the upper layer data block is completed, and removes the data block of caching, can further reduce channel
Time delay.
Referring to Fig. 3, Fig. 3 is the flow signal of the embodiment of data transmission method the 3rd of the communication system of the present invention
Figure.
The data transmission method of the communication system of present embodiment, transmitting terminal sets historical period as TwindowsNumber
According to the reception total time of feedback, error rate threshold is Thup, number of retransmissions is NT, initial value is 1 or preset constant, can specifically be wrapped
Include following steps：
Step S301, K reception sends the once upper layer data block to after upper layer data block to receiving terminal.
Step S302, receives the receiving terminal to the feedback of the upper layer data block, if described be fed back to NACK, performs
Step S303, if described be fed back to ACK, terminate and sends.
Step S303, the reception before transferring the K moment in preset period of time is fed back, and obtains NACK numbers in the reception feedback
e(k)。
Step S304, whenWhen, NT=NT+1。
Step S305, with NTTo be ultimately delivered number of times, the upper number of plies is transmitted to the receiving terminal by the transmitting terminal
According to block.
The present embodiment, transmission times are predicted by iteration, carry out having the data transmission for confirming closed-loop fashion, can be quick and precisely
Ground determines transmission times, it is not necessary to which receiving terminal is data cached, it is possible to decrease receiving terminal complexity.
Referring to Fig. 4, Fig. 4 is the flow signal of the embodiment of data transmission method the 4th of the communication system of the present invention
Figure.
The data transmission method of the communication system of present embodiment, transmitting terminal sets historical period as TwindowsNumber
According to the reception total time of feedback, it is not equal to 1, error rate threshold is ThupFor constant, number of retransmissions is NT, initial value is 1 or default
Constant, specifically may include following steps：
Step S401, K reception is to the reception feedback after upper layer data block, transferred before the K moment in preset period of time.
Step S402, judges whether to be deployed into, and step S403 is performed if being deployed into, step is performed less than if if transferring
S407。
Step S403, obtains NACK number e (k) in the reception feedback, performs step S404.
Step S404, whether be new data block, if so, performing step S405, perform if not if judging the upper layer data block
Step S406.
Step S405, when the upper layer data block be new data block andWhen, NT=NT+ 1, perform
Step S409.
Step S406, when the upper layer data block is not new data block, then makes NTFor maximum transmission times, and perform step
Rapid S408.
Step S407, NTIt is constant, perform step S409.
Step S408, with NTTo be ultimately delivered number of times, the upper number of plies is transmitted to the receiving terminal by the transmitting terminal
According to block, caching and return to step S401 are preserved after being sent.
Step S409 is with NTTo be ultimately delivered number of times, the upper layer data is transmitted to the receiving terminal by the transmitting terminal
Block, is sent and removes caching, and return to step S401.
The present embodiment, transmission times are predicted by iteration, are carried out without the data transmission for confirming open loop approach, can be quick and precisely
Ground determines transmission times, after the transmission of the upper layer data block is completed, can sweetly disposition caching data block, can further drop
Low channel delay.
Referring to Fig. 5, Fig. 5 is the structural representation of the data transmission system first embodiment of the communication system of the present invention
Figure.
The data transmission system of the communication system of present embodiment includes feedback acquisition module 100, number of times and obtains mould
Block 200 and delivery module 300, wherein：
Acquisition module 100 is fed back, is inscribed for after transmitting terminal receives upper layer data block, transferring default historical period
The reception feedback of receiving end, the reception is fed back to affirmative acknowledgement or negative response.
Number of times acquisition module 200, for obtaining the distribution of affirmative acknowledgement and/or negative response in the reception feedback transferred
Information, and obtain number of retransmissions corresponding with the distributed intelligence.
Delivery module 300, for the transmission times using the number of retransmissions as the upper layer data block, and passes through the hair
Sending end transmits the upper layer data block to the receiving terminal.
Present embodiment, after transmitting terminal receives upper layer data block, transfers connecing for receiving terminal in default historical period
Receive feedback, and according to transfer reception feedback determine upper layer data block number of retransmissions, and then using the number of retransmissions be described
The transmission times of upper layer data block, and the upper layer data block is transmitted to the receiving terminal by the transmitting terminal.It can reduce and connect
Receiving end feeds back the influence to transmission times to the instant reception of the upper layer data, and then effectively reduces transmitting terminal and receiving terminal
Influence of the processing delay to channel delay, reduces communication delay, improves link-quality and telecommunication service quality.
Wherein, for feedback acquisition module, the upper layer data block is transferred to the transmission by the upper layer module of transmitting terminal
End.The transmitting terminal is preferably emitter, and the receiving terminal is preferably receiver.The receiving terminal is properly received on described
After layer data block, then feeding back ACK is to the transmitting terminal, if the receiving terminal feeds back to the upper layer data block reception failure
NACK is to the transmitting terminal.
Further, the preset period of time before the historical period is preferably the transmitting terminal transmission upper layer data block.
10 minutes, 1 hour or other periods before the upper layer data block as described in sending.
In one embodiment, in addition to feedback memory module, be used for：
The reception feedback of the receiving terminal is received in units of preset period of time.
The reception feedback correspondence preset period of time of reception is stored, received as in the default historical period
The reception feedback at end.
The present embodiment, receives the reception feedback i.e. correspondence reception time storage of receiving terminal, can be the upper number of plies to be sent
Foundation is provided according to the redundancy versions number of block.
In another embodiment, feedback acquisition module 100 can be additionally used in：
After the transmitting terminal receives the upper layer data block, sent once to the receiving terminal by the transmitting terminal
The upper layer data block.
Reception of the receiving terminal to the upper layer data block is received to feed back.
If the reception is fed back to negative response, the reception feedback of receiving terminal in default historical period is transferred.
If the reception is fed back to affirmative acknowledgement, the transmission to the upper layer data block is terminated.
Present embodiment, confirms that closed-loop adaptation mode is transmitted to upper layer data block, receiving terminal need not enter by having
Row data caching process, it is possible to decrease receiving terminal complexity.
For number of times acquisition module 200, it is preferable that the transmission times of acquisition and the redundancy versions of the upper layer data block
Number is identical.The transmission times are preferably the transmission times in default transmission cycle (acquiescence).
Further, can proportion and transmission in the data feedback of acquisition by affirmative acknowledgement and/or negative response
Corresponding relation between number of times, obtains the transmission times of the upper layer data block, can also be existed by affirmative acknowledgement and/or negative response
The corresponding relation between corresponding distribution function value and transmission times in the data feedback of acquisition, obtains the biography of the upper layer data block
Send number of times.
In one embodiment, number of times acquisition module 200 can be additionally used in：
Affirmative acknowledgement and/or negative response in the reception feedback transferred is converted into preset characters, and by feedback time
Sequencing arrangement conversion obtained by preset characters, generate feedback sequence.
Corresponding distributed intelligence is generated according to the feedback sequence, the distributed intelligence is included two in the reception feedback transferred
The cumulative distribution function of negative response number between individual adjacent affirmative acknowledgement, and/or, X negative response is in the reception transferred
Y of feedback receives the corresponding probability-distribution function of proportion in feedback, and/or, a reception in the reception feedback transferred
It is fed back to the k-th after negative response and receives the probability of happening that feedback is still negative response, X, Y and K is more than or equal to 1
Integer, X be less than or equal to Y.
Obtain connect corresponding with the cumulative distribution function in the distributed intelligence, probability-distribution function, and/or probability of happening
Receive error rate.
According to the default corresponding relation received between error rate and number of retransmissions, obtain corresponding heavy with the reception error rate
Pass number of times.
The present embodiment, the sequence based on affirmative acknowledgement and/or negative response, can calculate to a nicety the upper layer data block
Transmission times, and then influence of the processing delay of transmitting terminal and receiving terminal to channel delay can be effectively reduced, greatly reduce logical
Letter delay, is greatly enhanced link-quality and telecommunication service quality.
Preferably, affirmative acknowledgement can be represented with " 0 ", negative response is represented with " 1 ",
In another embodiment, number of times acquisition module is further additionally operable to：
It is the distributed intelligence to calculate probability of happening of the negative response in the feedback of acquisition.
According to the probability of happening and the corresponding relation of number of retransmissions, re-transmission time corresponding with the probability of happening calculated is obtained
Number.
The present embodiment, can upper layer data described in quick obtaining by probability of happening of the negative response in the feedback of acquisition
The transmission times of block.And then influence of the processing delay of transmitting terminal and receiving terminal to channel delay can be effectively reduced, greatly subtract
Few communication delay, is greatly enhanced link-quality and telecommunication service quality.
Further, the ACK/NACK amounts that default first historical period inner receiver feeds back are counted, works as negative
Response is when proportion is more than certain threshold value during all receptions are fed back, then automatically within next transmission cycle by number of retransmissions
Plus 1, until number of retransmissions is maximum retransmission.When negative response, proportion is less than certain threshold value in all data feedbacks
When, then number of retransmissions is subtracted 1 within next transmission cycle, until number of retransmissions is 1.
For delivery module 300, the number of retransmissions is M, then transmits M institute to the receiving terminal by the transmitting terminal
State upper layer data block.
In one embodiment, delivery module 300 can be used for：
Using the number of retransmissions as the transmission times of the upper layer data block, and by the transmitting terminal to the receiving terminal
Transmit the upper layer data block；
After the transmission of the upper layer data block is completed, the data block of caching is removed.
The present embodiment, after the transmission of the upper layer data block is completed, removes the data block of caching, can further reduce letter
Road time delay.
Preferably, removing is data cached to be data cached in receiver.
In another embodiment, feedback acquisition module 100 can be further used for：
Whether after transmitting terminal receives upper layer data block, it is that the transmitting terminal had been transmitted to judge the upper layer data block
Data block.
If so, then passing through the transmitting terminal using default maximum retransmission as the transmission times of the upper layer data block
The upper layer data block is transmitted to the receiving terminal, after the transmission of the upper layer data block is completed, the data block of caching is removed.
If it is not, then transferring the reception feedback of receiving terminal in default historical period.
Delivery module 300 is further additionally operable to：
Using the number of retransmissions as the transmission times of the upper layer data block, and by the transmitting terminal to the receiving terminal
The upper layer data block is transmitted, after the transmission of the upper layer data block is completed, the data block of caching is preserved.
The present embodiment, the upper layer data block is transmitted by way of having and confirming open loop, can be confirmed the time delay retransmitted
Cached with sweetly disposition, and then active balance communication efficiency and stability.
As shown in Figure 6 and Figure 7, for synchronous satellite application scenarios, using LTE transmission system, to different Doppler frequency-shifts
Scene and following retransmission technique emulated, simulated retransmission technique includes the reason without HARQ, marked as B marked as A
Think that HARQ, the pressure marked as C are retransmitted, the link circuit self-adapting marked as D strengthens and the communication of the present invention marked as E
The data transfer of system, wherein：
Without HARQ, in order to avoid due to retransmitting the long delay caused, only sending a data block, retransmitted without using any.
Preferable HARQ, it is launched, receiving terminal all carries out 540ms HARQ cachings, using 540 HARQ processes, each
HARQ processes use preferable HARQ retransmission schemes.
Force to retransmit, no matter whether receiving terminal is correctly decoded data block, all data blocks are all repeated to send 4 times.
Link circuit self-adapting strengthens, and number of retransmissions is indicated by way of increasing receiver feedback granularity.
As shown in Figure 6 and Figure 7, the Simulation Evaluation performance indications of physical layer throughput and data block Block Error Rate, in synchronization
Under satellite environment, no HARQ transmission can cause more than 20% under low Doppler frequency-shift (fd=5Hz) scene
When BLER, fd=200Hz, BLER increases to more than 30%, has had a strong impact on the transmission quality of physical layer.Although forcing re-transmission can
To reach the bit error rate (0%) same with ideal HARQ, but each packet is required for sending 4 times, and frequency spectrum resource wastes serious,
Therefore physical layer handles up very low, only 6Mbps or so.The enhanced method of link circuit self-adapting, can be in frequency spectrum resource utilization rate
And having larger improvement in BLER, it is ensured that physical layer throughput is between 12Mbps~14Mbps.But receiver feedback can not be timely
Channel link qualities are updated, BLER still reaches 5% or so, can cause RLC ARQ processing pressure.Communication of the present invention
The data transmission method of system, can (handling capacity be left in 11Mbps~14Mbps while physical layer throughput performance is ensured
It is right), BLER is dropped to 1% or so in the case of low Doppler frequency-shift, the situation of high Doppler frequency-shift, BLER is also controlled
5% or so.Significantly improve physical layer transmission quality.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of data transmission method of communication system, it is characterised in that comprise the following steps：
The reception feedback of receiving terminal is received in units of preset period of time, correspondence preset period of time is fed back into the reception of reception and deposited
Storage, feeds back as the reception of receiving terminal in default historical period；
After transmitting terminal receives upper layer data block, the reception feedback of receiving terminal in default historical period is transferred, wherein, it is described
Reception is fed back to affirmative acknowledgement or negative response；
The distributed intelligence of affirmative acknowledgement and/or negative response in the reception feedback transferred is obtained, and acquisition is believed with the distribution
Cease corresponding number of retransmissions；
Using the number of retransmissions as the transmission times of the upper layer data block, and transmitted by the transmitting terminal to the receiving terminal
The upper layer data block.
2. the data transmission method of communication system according to claim 1, it is characterised in that obtain affirmative acknowledgement and/or
Distributed intelligence of the negative response in the reception feedback transferred, and the step of acquisition number of retransmissions corresponding with the distributed intelligence
Comprise the following steps：
Affirmative acknowledgement and/or negative response in the reception feedback transferred is converted into preset characters, and by the elder generation of feedback time
The preset characters obtained by order arrangement conversion, generate feedback sequence afterwards；
Corresponding distributed intelligence, two phases during the distributed intelligence is fed back including the reception transferred are generated according to the feedback sequence
The cumulative distribution function of negative response number between adjacent affirmative acknowledgement, and/or, X negative response is in the reception feedback transferred
Y receive the corresponding probability-distribution function of proportion in feedback, and/or, one receives feedback in the reception transferred feedback
The probability of happening that feedback is still negative response is received for the k-th after negative response, X, Y and K are whole more than or equal to 1
Number, X is less than or equal to Y；
Obtain with the cumulative distribution function in the distributed intelligence, the probability-distribution function, and/or, it is described occur it is general
The corresponding reception error rate of rate；
According to the default corresponding relation received between error rate and number of retransmissions, re-transmission time corresponding with the reception error rate is obtained
Number.
3. the data transmission method of communication system according to claim 1, it is characterised in that obtain affirmative acknowledgement and/or
Distributed intelligence of the negative response in the reception feedback transferred, and the step of acquisition number of retransmissions corresponding with the distributed intelligence
Comprise the following steps：
It is the distributed intelligence to calculate probability of happening of the negative response in the feedback of acquisition；
According to the probability of happening and the corresponding relation of number of retransmissions, number of retransmissions corresponding with the probability of happening calculated is obtained.
4. the data transmission method of communication system as claimed in any of claims 1 to 3, it is characterised in that with institute
The transmission times that number of retransmissions is the upper layer data block are stated, and the upper strata is transmitted to the receiving terminal by the transmitting terminal
The step of data block, comprises the following steps：
Using the number of retransmissions as the transmission times of the upper layer data block, and transmitted by the transmitting terminal to the receiving terminal
The upper layer data block；
After the transmission of the upper layer data block is completed, then the data block of caching is removed.
5. the data transmission method of communication system as claimed in any of claims 1 to 3, it is characterised in that：It is described
After transmitting terminal receives upper layer data block, the step of reception for transferring receiving terminal in default historical period is fed back includes following
Step：
After the transmitting terminal receives the upper layer data block, send once described to the receiving terminal by the transmitting terminal
Upper layer data block；
Reception of the receiving terminal to the upper layer data block is received to feed back；
If the reception is fed back to negative response, the reception feedback of receiving terminal in default historical period is transferred；
If the reception is fed back to affirmative acknowledgement, the transmission to the upper layer data block is terminated.
6. the data transmission method of communication system as claimed in any of claims 1 to 3, it is characterised in that：
It is described after transmitting terminal receives upper layer data block, the step of reception for transferring receiving terminal in default historical period is fed back
Comprise the following steps：
Whether after transmitting terminal receives upper layer data block, it is number that the transmitting terminal had been transmitted to judge the upper layer data block
According to block；
If so, then using default maximum retransmission as the transmission times of the upper layer data block, by the transmitting terminal to institute
State receiving terminal and transmit the upper layer data block, after the transmission of the upper layer data block is completed, remove the data block of caching；
If it is not, then transfer receiving terminal in default historical period reception feedback, and it is described using the number of retransmissions be described
The transmission times of upper layer data block, and by the transmitting terminal in the step of the receiving terminal transmission upper layer data block：
Using the number of retransmissions as the transmission times of the upper layer data block, and transmitted by the transmitting terminal to the receiving terminal
The upper layer data block, after the transmission of the upper layer data block is completed, preserves the data block of caching.
7. a kind of data transmission system of communication system, it is characterised in that including：
Memory module is fed back, the reception feedback for receiving receiving terminal in units of preset period of time, by the reception feedback pair of reception
Answer preset period of time to be stored, fed back as the reception of receiving terminal in default historical period；
Acquisition module is fed back, for after transmitting terminal receives upper layer data block, transferring receiving terminal in default historical period
Feedback is received, the reception is fed back to affirmative acknowledgement or negative response；
Number of times acquisition module, for obtaining the distributed intelligence of affirmative acknowledgement and/or negative response in the reception feedback transferred, and
Obtain number of retransmissions corresponding with the distributed intelligence；
Delivery module, for the transmission times using the number of retransmissions as the upper layer data block, and by the transmitting terminal to
The receiving terminal transmits the upper layer data block.
8. the data transmission system of communication system according to claim 7, it is characterised in that the number of times acquisition module is also
For：
Affirmative acknowledgement and/or negative response in the reception feedback transferred is converted into preset characters, and by the elder generation of feedback time
The preset characters obtained by order arrangement conversion, generate feedback sequence afterwards；
Corresponding distributed intelligence, two phases during the distributed intelligence is fed back including the reception transferred are generated according to the feedback sequence
The cumulative distribution function of negative response number between adjacent affirmative acknowledgement, and/or, X negative response is in the reception feedback transferred
Y receive the corresponding probability-distribution function of proportion in feedback, and/or, one receives feedback in the reception transferred feedback
The probability of happening that feedback is still negative response is received for the k-th after negative response, X, Y and K are whole more than or equal to 1
Number, X is less than or equal to Y；
Obtain reception corresponding with the cumulative distribution function in the distributed intelligence, probability-distribution function, and/or probability of happening wrong
The rate of mistake；
According to the default corresponding relation received between error rate and number of retransmissions, re-transmission time corresponding with the reception error rate is obtained
Number.
9. the data transmission system of communication system according to claim 7, it is characterised in that the number of times acquisition module is also
For：
It is the distributed intelligence to calculate probability of happening of the negative response in the feedback of acquisition；
According to the probability of happening and the corresponding relation of number of retransmissions, number of retransmissions corresponding with the probability of happening calculated is obtained.
10. the data transmission system of the communication system according to any one in claim 7 to 9, it is characterised in that described
Delivery module is additionally operable to：
Using the number of retransmissions as the transmission times of the upper layer data block, and transmitted by the transmitting terminal to the receiving terminal
The upper layer data block；
After the transmission of the upper layer data block is completed, the data block of caching is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453915.8A CN104184568B (en) | 2014-09-05 | 2014-09-05 | The data transmission method and system of communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453915.8A CN104184568B (en) | 2014-09-05 | 2014-09-05 | The data transmission method and system of communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104184568A CN104184568A (en) | 2014-12-03 |
| CN104184568B true CN104184568B (en) | 2017-09-29 |
Family
ID=51965337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410453915.8A Active CN104184568B (en) | 2014-09-05 | 2014-09-05 | The data transmission method and system of communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104184568B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294661A (en) * | 2016-03-30 | 2017-10-24 | 中兴通讯股份有限公司 | Method of adjustment, device and the base station of hybrid automatic repeat-request maximum retransmission |
| DE102016013653B4 (en) * | 2016-11-16 | 2021-06-17 | Diehl Metering Systems Gmbh | Method and device for sending house-technical data |
| CN107682128B (en) * | 2017-08-31 | 2020-06-05 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method, device, equipment and storage medium |
| CN109245867B (en) * | 2018-08-14 | 2022-09-27 | 深圳壹账通智能科技有限公司 | Message sending method, computer readable storage medium and terminal equipment |
| CN114297227B (en) * | 2021-12-24 | 2023-06-20 | 成都索贝数码科技股份有限公司 | Time sequence database construction method, query method and time sequence database |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112330A1 (en) * | 2004-05-14 | 2005-11-24 | Siemens Aktiengesellschaft | Method and transmitter and receiver for transmitting digital information packets in a data network |
| CN102017503A (en) * | 2008-05-05 | 2011-04-13 | 艾利森电话股份有限公司 | Improved uplink coverage via autonomous retransmission |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047481A (en) * | 2006-03-27 | 2007-10-03 | 中兴通讯股份有限公司 | Automatic retransmission requiring distribution feedback method in radio communication system |
-
2014
- 2014-09-05 CN CN201410453915.8A patent/CN104184568B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112330A1 (en) * | 2004-05-14 | 2005-11-24 | Siemens Aktiengesellschaft | Method and transmitter and receiver for transmitting digital information packets in a data network |
| CN102017503A (en) * | 2008-05-05 | 2011-04-13 | 艾利森电话股份有限公司 | Improved uplink coverage via autonomous retransmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104184568A (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101652952B (en) | Window control and retransmission control method, and transmission side device | |
| US10819416B2 (en) | Apparatuses and methods for using ARQ processes in a relay device | |
| RU2461147C2 (en) | Method of processing radio protocol in mobile communication system and mobile communication transmitter | |
| US20090319850A1 (en) | Local drop control for a transmit buffer in a repeat transmission protocol device | |
| CN104184568B (en) | The data transmission method and system of communication system | |
| CN101030842B (en) | Method and apparatus for rearranging data in mobile telecommunication system | |
| US8169905B2 (en) | Packet communication method and receiving-side apparatus | |
| US8917728B2 (en) | Retransmission request transmitting method and receiving-side apparatus | |
| US20160173237A1 (en) | Method for a first network node for transmitting or retransmitting data to a second network node and first network node thereof and method for a second network node for receiving data transmitted or retransmitted from a first network node and second network node thereof | |
| CN103119881A (en) | Block acknowledgement with retransmission policy differentiation | |
| CN103179614B (en) | The method of transmitting pdcp data unit to upper layer | |
| WO2015192322A1 (en) | Radio resource scheduling method and apparatus | |
| KR20080054683A (en) | Apparatus and method for transmitting data in a mobile communication system | |
| WO2018203305A1 (en) | Radio link control status reporting | |
| WO2018059983A1 (en) | Communications devices, method and mobile communications system | |
| CN107666369A (en) | A kind of method for retransmitting polarization code and its transmission equipment, receiving device | |
| CN108463986B (en) | Wireless communication device, wireless communication system, and wireless communication method | |
| WO2014075284A1 (en) | Data retransmission and feedback methods, and corresponding apparatus | |
| US20100144364A1 (en) | Retransmission control method and transmitting-side apparatus | |
| CN107592186A (en) | A kind of method and apparatus for carrying out data re-transmission | |
| US9510242B2 (en) | Reducing superfluous traffic in a network | |
| KR101595575B1 (en) | Apparatus and method for transmitting/receiving data in a mobile communication system | |
| CN116963175A (en) | Data transmission method, device and system | |
| KR101232599B1 (en) | Method for reassembling medium access control protocal data unit and receiver performing the same | |
| CN110708723B (en) | Data transmission method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |