CN106301704B - The caching method of HARQ data - Google Patents
The caching method of HARQ data Download PDFInfo
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- CN106301704B CN106301704B CN201510275878.0A CN201510275878A CN106301704B CN 106301704 B CN106301704 B CN 106301704B CN 201510275878 A CN201510275878 A CN 201510275878A CN 106301704 B CN106301704 B CN 106301704B
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- harq data
- error code
- harq
- buffer zone
- process number
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1806—Go-back-N protocols
-
- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
Abstract
The present invention relates to a kind of caching methods of HARQ data, which comprises terminal receives the HARQ data that base station is sent, and monitors the error code process number of HARQ data；If the error code process number meets the first preset condition, and current cache region is divided according to the first predetermined manner, then divides buffer zone caching HARQ data according to the second predetermined manner.The caching method of HARQ data provided by the invention, by receiving the monitoring of error condition to user equipment downlink, the partition strategy of adaptive adjustment buffer area guarantees that terminal obtains maximum throughput under different scenes.
Description
Technical field
This application involves field of communication technology more particularly to a kind of hybrid automatic repeat-request (Hybrid Automatic
Repeat reQuest, HARQ) data caching method.
Background technique
The introducing of HARQ technology in long term evolution (Long Term Evolution, LTE) system, provides for terminal
The function of forward error correction (Forward Error Correction, FEC), while mistake is received more than FEC error correction energy in terminal
In the case where power, makes terminal can use repeatedly received information by the method that system is retransmitted and merge, obtain stronger entangle
Wrong ability improves system throughput performance.
The data that HARQ buffer area obtains after each transmission block demodulation when being used to store HARQ difference process new biography and retransmitting,
It for each decoding unit, is equivalent to and provides a virtual circular buffer area, retransmit and the data of new biography are closed
And decoding unit decoding after cyclic redundancy check code (Cyclic Redundancy Check, CRC) mistake data need into
Row caching, merges when remaining to retransmit next time and uses, it is therefore an objective to increase the virtual code rate of each code block channel coding/decoding, to improve
Error correcting capability.For time division duplex (Time Division Duplexing, TDD) system, the TDD for being more than 8 for process number matches
It sets, HARQ buffer area can not store over the data of 8 processes simultaneously.
In the prior art, the TDD that process number is more than 8 is configured, if existing simultaneously more than 8 processes has error code,
In the case where not increasing buffer size, need to abandon the data for having error code process.However, for the process data being dropped,
Can not increase the virtual code rate of channel coding by retransmitting, especially to can not self-demarking code re-transmission situation, which will be unable to
Correct decoding causes terminal throughput to decline to a great extent.
Summary of the invention
The purpose of the application is to provide a kind of caching method of HARQ data, by receiving error condition to user equipment downlink
Monitoring, the partition strategy of adaptive adjustment buffer area guarantees that terminal obtains maximum throughput under different scenes.
To achieve the goals above, this application provides a kind of caching methods of HARQ data, which comprises
Terminal receives the HARQ data that base station is sent, and monitors the error code process number of HARQ data；
If the error code process number meets the first preset condition, and current cache region is divided according to the first predetermined manner
, then buffer zone is divided according to the second predetermined manner cache HARQ data.
The caching method of HARQ data provided by the present application, it is adaptive by receiving the monitoring of error condition to user equipment downlink
The partition strategy for the adjustment buffer area answered.It is more than 8 TDD configuration for process number, if it is wrong to exist simultaneously more than 8 processes
Code can still be such that all processes all obtain and retransmit bring decoding gain, especially in the case where not increasing buffer size
Be for can not self-demarking code re-transmission situation；Meanwhile in the case where being less than or equal to 8 processes has error code, do not influence still every
A process can be obtained the amount of storage of maximum buffer, does not reduce and retransmits bring decoding gain, to ensure that terminal obtains
Obtain maximum throughput.
Detailed description of the invention
Fig. 1 is the caching method flow chart for the HARQ data that the embodiment of the present application one provides；
Fig. 2 is the caching method flow chart for the HARQ data that the embodiment of the present application two provides.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Fig. 1 is the caching method flow chart for the HARQ data that the embodiment of the present application one provides.The executing subject of the method
Terminal is communication equipment, as shown in Figure 1, the method specifically includes:
Step 101, terminal receives the HARQ data that base station is sent, and monitors the error code process number of HARQ data.
Specifically, terminal receives the HARQ data that base station is sent, for receiving the HARQ data of each process, using following
There are the processes of error code for HARQ data described in ring redundancy check code CRC check, and there are the process numbers of error code for statistics.
Step 102, if the error code process number meets the first preset condition, and current cache region is according to the first default side
What formula divided, then buffer zone is divided according to the second predetermined manner cache HARQ data.
Specifically, judged by the step 101 obtained error code process number of statistics, if error code process number meets the
One preset condition, then judge whether current cache region division is according to the first predetermined manner, such as by way of record variable
Fruit is then to retain the HARQ data cached, and intercept partial data, repartitions buffer zone according to the second predetermined manner
Afterwards, by the data buffer storage of interception in the buffer zone newly marked off.
Wherein, buffer zone is specifically included according to the division of the first predetermined manner: according to formulaBuffer zone, which is distributed, for each process caches HARQ data；Wherein, NsoftFor terminal
Receive total buffer zone size of HARQ data, NIRFor the buffer zone size of each transmission block of each process, KMIMOFor with
Maximum fluxion used in the received Physical Downlink Shared Channel PDSCH transmission of family equipment, terminal are fixed in long term evolution LTE protocol
When receiving PDSCH transmission under the transmission mode 3,4 of justice, KMIMOValue is 2, K in the case of otherMIMOValue is 1, MDL_HARQFor most
Big downlink HARQ process number.
Optionally, the first preset condition is that there are the process numbers of error code to be more than for the HARQ data that receives of the continuous n times of terminal
8, wherein N is positive integer.
It should be noted that N can be chosen by experience, it is specifically as follows 10.
Optionally, it divides buffer zone caching HARQ data according to the second predetermined manner to specifically include: according to formulaBuffer zone, which is distributed, for each process caches HARQ data；Wherein, NsoftFor terminal reception
Total buffer zone size of HARQ data, NIRFor the buffer zone size of each transmission block of each process, KMIMOIt is set for user
Maximum fluxion used in standby received Physical Downlink Shared Channel PDSCH transmission, terminal are defined in long term evolution LTE protocol
When receiving PDSCH transmission under transmission mode 3,4, KMIMOValue is 2, and value is 1, M in the case of otherDL_HARQFor maximum downstream
HARQ process number.
The caching method of HARQ data provided by the present application, it is adaptive by receiving the monitoring of error condition to user equipment downlink
The partition strategy for the adjustment buffer area answered.It is more than 8 TDD configuration for process number, if it is wrong to exist simultaneously more than 8 processes
Code can still be such that all processes all obtain and retransmit bring decoding gain, especially in the case where not increasing buffer size
Be for can not self-demarking code re-transmission situation；Meanwhile in the case where being less than or equal to 8 processes has error code, do not influence still every
A process can be obtained the amount of storage of maximum buffer, does not reduce and retransmits bring decoding gain, to ensure that terminal obtains
Obtain maximum throughput.
It should be noted that counting obtained error code process number by step 101 to be judged, if it is judged that not
Meet the first preset condition, then judge whether to meet the second preset condition, the second preset condition is what the continuous n times of terminal received
There are the process numbers of error code to be less than or equal to 8 for HARQ data.Following embodiment is that error code process number meets the second preset condition, and works as
Preceding buffer zone caches the embodiment of HARQ data in the case where dividing according to the second predetermined manner.
Fig. 2 is the caching method flow chart for the HARQ data that the embodiment of the present application two provides.The executing subject of the method
Terminal is communication equipment, as shown in Fig. 2, the method specifically includes:
Step 201, terminal receives the HARQ data that base station is sent, and monitors the error code process number of HARQ data.
Specifically, terminal receives the HARQ data that base station is sent, for receiving the HARQ data of each process, using following
There are the processes of error code for HARQ data described in ring redundancy check code CRC check, and there are the process numbers of error code for statistics.
Step 202, if the error code process number meets the second preset condition, and current cache region is according to the second default side
What formula divided, then buffer zone is divided according to the first predetermined manner cache HARQ data.
Specifically, judged by the step 201 obtained error code process number of statistics, if error code process number meets the
Two preset conditions, then judge whether current cache region division is according to the second predetermined manner, such as by way of record variable
Fruit is then to retain the HARQ data cached, repartitions buffer zone according to the first predetermined manner, stores data in new draw
In the region divided, insufficient section is reset.
Wherein, buffer zone is specifically included according to the division of the second predetermined manner: according to formulaBuffer zone, which is distributed, for each process caches HARQ data；Wherein, NsoftFor terminal reception
Total buffer zone size of HARQ data, NIRFor the buffer zone size of each transmission block of each process, KMIMOIt is set for user
Maximum fluxion used in standby received Physical Downlink Shared Channel PDSCH transmission, terminal are defined in long term evolution LTE protocol
When receiving PDSCH transmission under transmission mode 3,4, KMIMOValue is 2, and value is 1, M in the case of otherDL_HARQFor maximum downstream
HARQ process number.
Optionally, the second preset condition is that there are the process numbers of error code to be less than for the HARQ data that receives of the continuous n times of terminal
Equal to 8.
It should be noted that N can be chosen by experience, it is specifically as follows 10.
Optionally, it divides buffer zone caching HARQ data according to the first predetermined manner to specifically include: according to formulaBuffer zone, which is distributed, for each process caches HARQ data；Wherein, NsoftFor terminal
Receive total buffer zone size of HARQ data, NIRFor the buffer zone size of each transmission block of each process, KMIMOFor with
Maximum fluxion used in the received PDSCH transmission of family equipment, the transmission mode 3,4 that terminal is defined in long term evolution LTE protocol
When lower reception PDSCH transmission, KMIMOValue is 2, K in the case of otherMIMOValue is 1, MDL_HARQFor maximum downstream HARQ process
Number.
It should be noted that counting obtained error code process number by step 201 to be judged, if it is judged that both
It is unsatisfactory for the first preset condition, is also unsatisfactory for the second preset condition, then current buffer zone division methods is kept to cache HARQ
Data.
The caching method of HARQ data provided by the present application, it is adaptive by receiving the monitoring of error condition to user equipment downlink
The partition strategy for the adjustment buffer area answered.It is more than 8 TDD configuration for process number, if it is wrong to exist simultaneously more than 8 processes
Code can still be such that all processes all obtain and retransmit bring decoding gain, especially in the case where not increasing buffer size
Be for can not self-demarking code re-transmission situation；Meanwhile in the case where being less than or equal to 8 processes has error code, do not influence still every
A process can be obtained the amount of storage of maximum buffer, does not reduce and retransmits bring decoding gain, to ensure that terminal obtains
Obtain maximum throughput.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Object and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It is not considered that exceeding scope of the present application.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can be executed with hardware, processor
The combination of software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described specific embodiment has carried out further the purpose of the application, technical scheme and beneficial effects
It is described in detail, it should be understood that being not used to limit the application the foregoing is merely the specific embodiment of the application
Protection scope, within the spirit and principles of this application, any modification, equivalent substitution, improvement and etc. done should all include
Within the scope of protection of this application.
Claims (5)
1. a kind of caching method of hybrid automatic repeat-request HARQ data, which is characterized in that the described method includes:
Terminal receives the HARQ data that base station is sent, and monitors the error code process number of HARQ data；
If the error code process number meets the first preset condition, and current cache region is divided according to the first predetermined manner, then
Buffer zone, which is divided, according to the second predetermined manner caches HARQ data；
It there are the process number of error code is more than 8 that first preset condition, which is the HARQ data that receives of the continuous n times of terminal, wherein N
For positive integer.
2. the method according to claim 1, wherein the method also includes:
If the error code process number meets the second preset condition, and current cache region is divided according to second predetermined manner
, then buffer zone is divided according to the first predetermined manner cache HARQ data.
3. according to the method described in claim 2, it is characterized in that, second preset condition is that the continuous n times of terminal receive
HARQ data there are the process number of error code be less than or equal to 8.
4. according to the method described in claim 2, it is characterized in that, described divide buffer zone caching according to the first predetermined manner
HARQ data specifically includes:
According to formulaBuffer zone, which is distributed, for each process caches HARQ data；
Buffer zone caching HARQ data is divided according to the second predetermined manner to specifically include:
According to formulaBuffer zone, which is distributed, for each process caches HARQ data；
Wherein, NsoftTotal buffer zone size of HARQ data, N are received for terminalIRFor each process each transmission block it is slow
Deposit area size, KMIMOFor maximum fluxion used in the received Physical Downlink Shared Channel PDSCH transmission of user equipment, terminal
When receiving PDSCH transmission under the transmission mode 3,4 that long term evolution LTE protocol defines, KMIMOValue is 2, K in the case of otherMIMO
Value is 1, MDL_HARQFor maximum downstream HARQ process number.
5. the method according to claim 1, wherein the error code process number of the monitoring HARQ data specifically wraps
It includes:
Terminal is deposited for receiving the HARQ data of each process using HARQ data described in cyclic redundancy check code CRC check
In the process of error code, and there are the process numbers of error code for statistics.
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| CN103875274A (en) * | 2012-07-31 | 2014-06-18 | 华为技术有限公司 | Memory allocation method and system, user equipment, and network device |
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| US8422480B2 (en) * | 2007-10-01 | 2013-04-16 | Qualcomm Incorporated | Acknowledge mode polling with immediate status report timing |
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| CN101567749A (en) * | 2008-04-22 | 2009-10-28 | 大唐移动通信设备有限公司 | Method and device for downlink data transmission |
| CN101572661A (en) * | 2008-04-30 | 2009-11-04 | 大唐移动通信设备有限公司 | Methods, device and system for caching data based on time division duplex mode |
| CN102469022A (en) * | 2010-11-19 | 2012-05-23 | 大唐移动通信设备有限公司 | Allocation method and equipment of cache space |
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