CN103259634B - The hybrid transmission block automatically resending request is stored and the method for decoding and device - Google Patents
The hybrid transmission block automatically resending request is stored and the method for decoding and device Download PDFInfo
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Abstract
The invention discloses a kind of hybrid transmission block automatically resending request storage and the method for decoding and device, the method comprises: obtain the hybrid transmission block automatically resending request in downstream signal transmitting procedure, transmission block comprises at least one encoding block; The encoding block that can not be properly decoded is stored in the storage area of the buffer split, and the storage area of buffer carries out dynamic partition in units of encoding block.By the way, the present invention can reduce the capacity needed for buffer, and promotes the service efficiency of buffer.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of hybrid transmission block automatically resending request storage and the method for decoding and device.
Background technology
In a communications system, in order to ensure the transmitting of data, whether whether the data that receiving terminal is generally received by cyclic redundancy check (CRC) code (CRC, CyclicRedundancyCheck) inspection complete, correct.If the data received are wrong, transmitting terminal retransmits this data block with regard to needs.In order to promote receptivity, once there is the data block of decoding error in receiving terminal before can't abandoning, usually the Soft Inform ation of data block is retained to get up, so that merge with the data block retransmitted, can promote the performance of reception like this.
But, if the Soft Inform ation of the data block of decoding error once occurs before needing reservation receiving terminal, will internal memory be provided, and provide internal memory to need cost, the capacity of internal memory is larger, and cost is larger, so how reducing internal memory cost when data retransmission is the problem needing in the industry to solve.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of storage the hybrid transmission block automatically resending request and the method for decoding and device, can reduce the capacity needed for buffer, and promote the service efficiency of buffer.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of method stored the hybrid transmission block automatically resending request, comprise: obtain the hybrid transmission block automatically resending request in downstream signal transmitting procedure, described transmission block comprises at least one encoding block; Be stored in the storage area of the buffer split by the encoding block that can not be properly decoded at least one encoding block described, wherein, the storage area of described buffer carries out dynamic partition in units of encoding block.
Wherein, the storage area of described buffer carries out the step of dynamic partition in units of encoding block, comprise: be partitioned into the first storage area of described buffer to the systematic bits of each encoding block, according to the code rate of transmitting data, determine whether that the second storage area of buffer described in dynamic partition is to the check bit of each encoding block.
Wherein, the size of described first storage area is the size of described encoding block, and described check bit comprises the first check bit and the second check bit.
Wherein, the size of described second storage area equals the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
Wherein, the size of described second storage area is less than the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
Wherein, if the code rate of described transmitting data is greater than 0.33, then the size of described second storage area equals the size of described first storage area.
Wherein, if the code rate of described transmitting data is less than or equal to 0.33, then the size of described second storage area equals the size of 1.5 times of described first storage areas.
Wherein, described method also comprises: the described encoding block that record first time and second time store is in the initial address of the storage area of described buffer; Obtain the bit of the described encoding block of third time transmission; The described encoding block stored according to the first time of having recorded and second time, in the initial address of the storage area of described buffer, obtains the bit of the described encoding block that first time and second time store; In buffer on chip, merge the bit of the described encoding block that the first time of acquisition and the bit of described encoding block of second time storage and the third time of acquisition retransmit, decoding is carried out to described encoding block.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of method of the hybrid transmission block automatically resending request being carried out to decoding, comprise: obtain the hybrid transmission block automatically resending request in downstream signal transmitting procedure, described transmission block comprises at least one encoding block; The encoding block that can not be properly decoded at least one encoding block described is stored in the storage area of the buffer split, and the described encoding block of record first time and second time storage is in the initial address of the storage area of described buffer, wherein, the storage area of described buffer carries out dynamic partition in units of encoding block; After the bit of described encoding block obtaining third time transmission, the described encoding block stored according to the first time of having recorded and second time, in the initial address of the storage area of described buffer, obtains the bit of the described encoding block that first time and second time store; In buffer on chip, merge the bit of the described encoding block of the bit of the first time of acquisition and the described encoding block of second time storage and the third time transmission of acquisition, decoding is carried out to described encoding block.
For solving the problems of the technologies described above, another technical scheme that the present invention adopts is: provide a kind of device stored the hybrid transmission block automatically resending request, described device comprises: the first acquisition module, for obtaining the hybrid transmission block automatically resending request in downstream signal transmitting procedure, described transmission block comprises at least one encoding block; Memory module, for being stored in the storage area of the buffer split by the encoding block that can not be properly decoded at least one encoding block described, wherein, the storage area of described buffer carries out dynamic partition in units of encoding block.
Wherein, described device also comprises segmentation module, and described segmentation module is used for carrying out dynamic partition to the storage area of described buffer in units of encoding block.
Wherein, described segmentation module is specifically for splitting the first storage area of described buffer to the systematic bits of each encoding block, according to the code rate of transmitting data, determine whether that the second storage area of buffer described in dynamic partition is to the check bit of each encoding block.
Wherein, the size of described first storage area is the size of described encoding block, and described check bit comprises the first check bit and the second check bit.
Wherein, the size of described second storage area equals the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
Wherein, the size of described second storage area is less than the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
Wherein, if the code rate of described transmitting data is greater than 0.33, then the size of described second storage area equals the size of described first storage area.
Wherein, if the code rate of described transmitting data is less than or equal to 0.33, then the size of described second storage area equals the size of 1.5 times of described first storage areas.
Wherein, described device also comprises: logging modle, for recording the initial address of described encoding block at the storage area of described buffer of first time and second time storage; Second acquisition module, for obtaining the bit of the described encoding block of third time transmission; 3rd acquisition module, the described encoding block of the first time of having recorded for basis and storage for the second time, in the initial address of the storage area of described buffer, obtains for the first time and the bit of the described encoding block of storage for the second time; Merge module, the bit of the bit of described encoding block that first time and second time for merging acquisition in buffer on chip store and the described encoding block that the third time of acquisition retransmits, carries out decoding to described encoding block.
The invention has the beneficial effects as follows: the situation being different from prior art, the present invention obtains the transmission block of the HARQ in downstream signal transmitting procedure, and transmission block comprises at least one encoding block; The encoding block that can not be properly decoded is stored in the storage area of the buffer split, and the storage area of buffer carries out dynamic partition in units of encoding block.In this way, in units of encoding block, the storage area of dynamic partition buffer, the encoding block of correct decoding in the scheme split in units of transmission block can be avoided to take the phenomenon of valuable storage area, thus can reduce the capacity needed for buffer, and promote the service efficiency of buffer.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention to method one execution mode that the hybrid transmission block automatically resending request stores;
Fig. 2 is the flow chart of the present invention to another execution mode of method that the hybrid transmission block automatically resending request stores;
The schematic diagram of Fig. 3 method that to be the present invention store the hybrid transmission block automatically resending request storage area needed for encoding block in conventional manner;
Fig. 4 is the schematic diagram of the present invention to method storage area needed for encoding block in an optimal way that the hybrid transmission block automatically resending request stores;
Fig. 5 method that to be the present invention store the hybrid transmission block automatically resending request schematic diagram of storage area needed for encoding block in traditional approach when there is restricted rate-matched;
Fig. 6 method that to be the present invention store the hybrid transmission block automatically resending request schematic diagram of storage area needed for encoding block in one optimal way when there is restricted rate-matched;
Fig. 7 is the transmission schematic diagram of the bit of transmitting terminal buffer transfer encoding block;
Fig. 8 is the storage condition schematic diagram after the present invention stores through 2 times the method buffer that the hybrid transmission block automatically resending request stores;
Fig. 9 is the combination situation schematic diagram of method in buffer on chip that the present invention stores the hybrid transmission block automatically resending request;
Figure 10 is the transmission schematic diagram of the bit of the transmitting terminal buffer transfer encoding block when restricted rate-matched;
Storage condition schematic diagram after Figure 11 method buffer when restricted rate-matched that to be the present invention store the hybrid transmission block automatically resending request stores through 2 times;
Figure 12 combination situation schematic diagram of method when restricted rate-matched in buffer on chip that to be the present invention store the hybrid transmission block automatically resending request;
Figure 13 is the method schematic diagram compared with the prior art that the present invention stores the hybrid transmission block automatically resending request;
Figure 14 is the present invention carries out method one execution mode of decoding flow chart to the hybrid transmission block automatically resending request;
Figure 15 is that the present invention carries out the flow chart of another execution mode of method of decoding to the hybrid transmission block automatically resending request;
Figure 16 is the structural representation of the present invention to device one execution mode that the hybrid transmission block automatically resending request stores;
Figure 17 is the present invention carries out device one execution mode of decoding structural representation to the hybrid transmission block automatically resending request.
Embodiment
LTE protocol defines the type of 5 kinds of subscriber equipmenies, and the soft amount of bits that the buffer of often kind of user device type can store is as shown in table 1:
The soft bit number scale that the buffer of the various user device type of table 1 can store
| User device type | Total soft bit number (N soft） |
| Category1 | 250368 |
| Category2 | 1237248 |
| Category3 | 1237248 |
| Category4 | 1827072 |
| Category5 | 3667200 |
To define needed for each transmission block (TB) hybrid automatically resends request (HybridAutomaticRepeatRequest for LTE protocol, HARQ) size of the storage area of buffer and this storage area number of transmission block that can store, refers to following formula:
Wherein: N
iRrepresent the size of the storage area of the HARQ buffer needed for each transmission; N
softfor the size of table 1 defined; K
mIMOrepresent the coefficient that transfer mode is corresponding, if transfer mode is spatial reuse transfer mode, then K
mIMOequal 2, if transfer mode is other transfer mode except spatial reuse transfer mode, then K
mIMOequal 1; M
limitthe constant for 8, M
dL_HARQfor the number of descending maximum HARQ process, its value depends on the configuration of time division duplex uplink/downlink (TDDUL/DL), as shown in table 2.
Table 2TDDUL/DL configuration and M
dL_HARQrelation table
| TDD UL/DL configures | MDL_HARQ |
| 0 | 4 |
| 1 | 7 |
| 2 | 10 |
| 3 | 9 |
| 4 | 12 |
| 5 | 15 |
| 6 | 6 |
Also namely subscriber equipment is divided at most 8 parts the storage area of HARQ buffer.In actual applications, if TDDUL/DL is configured to 5, time namely the number of maximum HARQ process is 15, just there will be need storage errors code word but do not have storage area can situation.
Consider that in LTE, each transmission block comprises 1-13 encoding block (CB), each CB block has the cyclic redundancy check (CRC) code (CRC) of oneself to be used for detecting this encoding block whether correct decoding, therefore appear in a transmission block, some encoding blocks are properly decoded, the situation of other encoding block decoding error.If distribute buffer according to transmission block, these encoding blocks be properly decoded also can occupy valuable storage area.
The present invention, in order to make full use of the storage area of buffer, in units of encoding block, carries out dynamic partition to buffer, in this way, the utilance of buffer is improved greatly.
Below in conjunction with drawings and embodiments, the present invention is described in detail.
Consult Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 is the flow chart of the present invention to method one execution mode that the hybrid transmission block automatically resending request stores, and comprising:
If before obtaining the encoding block in transmission block, carry out dynamic partition to the storage area of buffer in units of encoding block, then this flow process comprises step S101, does not comprise step S103; If after obtaining the encoding block in transmission block, carry out dynamic partition to the storage area of buffer in units of encoding block, then this flow process does not comprise step S101, comprises step S103.
Step S101: before obtaining the encoding block in transmission block, in units of maximum encoding block, dynamic partition is carried out to the storage area of buffer.
Before obtaining the encoding block in transmission block, in units of maximum encoding block, the storage area of dynamic partition buffer, and no longer in units of transmission block, the storage area of buffer is split.
Step S101 specifically comprises: the first storage area being partitioned into this buffer, to the systematic bits of each encoding block, according to the code rate of transmitting data, determines whether that the second storage area of this buffer of dynamic partition is to the check bit of each encoding block.
Wherein, the size of this first storage area is the size of maximum encoding block, and this check bit comprises the first check bit and the second check bit.
In a communications system, receiving terminal is it is desirable that systematic bits, and check bit just shields.General transmitting terminal, at HARQ first crossing transmitting system bit, then sends check bit in re-transmission, only has check bit can not from decoding, and receiving terminal must merge decoding the check bit retransmitted and the first systematic bits passed.
Therefore, be partitioned into the first storage area of this buffer to the systematic bits of each encoding block, namely split the storage area of the size of maximum encoding block, according to the code rate of transmitting data, determine whether that the second storage area of this buffer of dynamic partition is to the check bit of each encoding block.
Second storage area is dynamic change, if the channel condition of communication is fine, check bit can not be needed, now the size of the second storage area can be 0, systematic bits by encoding block is temporarily stored in the first storage area, once this encoding block correct decoding be detected, this temporary encoding block can be deleted, not need the second storage area splitting this buffer to the check bit of this encoding block.If the channel condition of communication is poor, check bit is The more the better, now, need the second storage area splitting this buffer to the check bit of this encoding block, a kind of situation is: the size of the second storage area equals the size of the first storage area of twice, the storage area of the first check bit and the second check bit is equal, namely the storage area of the first check bit and the second check bit equals the size of the first storage area respectively, and now the first check bit and the second check bit all have sufficient storage area to store.
But, owing to belonging to varying in size of the encoding block of different transmission block in actual transmissions, and N
iRsimilar method, if split buffer before obtaining the encoding block in transmission block, when carrying out buffer segmentation in units of encoding block, splitting and also must can store maximum encoding block to the storage area of encoding block.If but in units of maximum encoding block, split the storage area of buffer, then the buffer number of total encoding block that can store is by the number of encoding block in the scheme that is less than based on transmission block.
Give an example: user device type is Category3, storable total channel bit is 1237248, if TDDUL/DL be configured to 5, and Kmimo equals 1, so N
iR=154656, altogether can store 8*13=104 encoding block.If use the scheme based on encoding block, the size of the storage area of the buffer that each encoding block needs is 3*6144=18432, and altogether can store 67 encoding blocks, wherein the size of encoding block is 0-6144.
For solving above-mentioned produced problem, if increase the number of available encoding block, the size of the storage area storing each encoding block just must be reduced.Therefore, if the size of the second storage area is less than the size of the first storage area of twice, the storage area of the first check bit and the second check bit is equal, then can reduce the storage area storing each encoding block.In a preferred embodiment, if the code rate of transmitting data is greater than 0.33, then the size of the second storage area equals the size of the first storage area, namely the size of the storage area of the first check bit and the second check bit is the half of the size of the first storage area respectively, in another preferred embodiment, if the code rate of transmitting data is less than or equal to 0.33, then the size of the second storage area equals the size of 1.5 times of first storage area.
Suppose that the size of encoding block is KW, so traditional method is the cacheable memory region of opening each encoding block is 3*KW size, as shown in Figure 3, in fact we can reduce the size of storage area, such as, for systematic bits (S), the size of the first storage area is KW, and the size of first, second check bit (p1, p2) is respectively KW/2, namely the size of the second storage area is KW, then can be expressed as Fig. 4.The size of each like this encoding block storage area is in both the buffers 2*KW size, saves the space of 1/3.
And for example, if there is the situation of restricted rate-matched, suppose that the storage area that traditional method distributes to each encoding block is 2.5*KW, as shown in Figure 5, in fact we can reduce the size of storage area, such as, for systematic bits (S), the size of the first storage area is KW, and first, second check bit (p1, p2) size is respectively KW/2, and namely the size of the second storage area is KW, then can be expressed as Fig. 6.The size of each like this encoding block storage area is in both the buffers 2*KW size, saves the space of 1/5.
Step S102: obtain the hybrid transmission block automatically resending request in downstream signal transmitting procedure, this transmission block comprises at least one encoding block.
Downstream signal refers to that base station sends to the signal of subscriber equipment.
Hybridly automatically resend request (HARQ, HybridAutomaticRepeatRequest), i.e. ARQ(automatic repeat request) and FEC(forward error correction coding) hybrid plan that combines.Data communication grows up at first on wired network, usually requires the transmission quality that larger bandwidth sum is higher.For wired connection, the reliability of transfer of data realizes by retransmitting.During current once trial bust this, just require retransmitted data packet, such transmission mechanism is referred to as ARQ.Under wireless transmission environments, the interference that interchannel noise and the decline brought due to mobility and other users bring makes channel transmission quality very poor, so should be suppressed various interference to packet protect.This protection mainly adopts FEC, transmits extra bit in a packet.But too much forward error correction coding can make efficiency of transmission step-down.Therefore, a kind of hybrid plan HARQ, the scheme that namely ARQ and FEC combines has been suggested.Become when HARQ technology can compensate wireless mobile channel well and multipath fading on the impact of Signal transmissions, become one of key technology indispensable in following 3G long evolving system.
1-13 encoding block is generally comprised in a transmission block, each encoding block has the cyclic redundancy check (CRC) code of oneself to be used for detecting this encoding block whether correct decoding, therefore there will be some encoding blocks in a transmission block to be properly decoded, other encoding block can not the situation of correct decoding.
Step S103: after obtaining the encoding block in transmission block, in units of the encoding block of correct decoding, can not carry out dynamic partition to the storage area of buffer.
After obtaining the encoding block in transmission block, by current can not in units of the encoding block of correct decoding, the storage area of dynamic partition buffer, and no longer in units of transmission block, the storage area of buffer being split.
Step S103 specifically comprises: the first storage area being partitioned into this buffer to each current can not the systematic bits of encoding block of correct decoding, according to the code rate of transmitting data, determine whether the second storage area of this buffer of dynamic partition to each current can not the check bit of encoding block of correct decoding.Wherein, the size of this first storage area be current can not the size of encoding block of correct decoding, this check bit comprises the first check bit and the second check bit.
If the channel condition of communication is poor, check bit is The more the better, now, need the second storage area splitting this buffer to the check bit of this encoding block, a kind of situation is: the size of the second storage area equals the size of the first storage area of twice, the storage area of the first check bit and the second check bit is equal, namely the storage area of the first check bit and the second check bit equals the size of the first storage area respectively, and now the first check bit and the second check bit all have sufficient storage area to store; Another kind of situation is: the size of the second storage area is less than the size of the first storage area of twice, the storage area of the first check bit and the second check bit is equal, in a preferred embodiment, if the code rate of transmitting data is greater than 0.33, then the size of the second storage area equals the size of the first storage area, and namely the size of the storage area of the first check bit and the second check bit is the half of the size of the first storage area respectively; In another preferred embodiment, if the code rate of transmitting data is less than or equal to 0.33, then the size of the second storage area equals the size of 1.5 times of first storage area.
Certainly, in units of encoding block, the mode that dynamic partition also has other is carried out to the storage area of buffer, no longer carry out superfluous chatting at this.
Step S104: can not the encoding block of correct decoding be stored in the storage area of the buffer split by this at least one encoding block, wherein, the storage area of this buffer carries out dynamic partition in units of encoding block.
For can not the encoding block of correct decoding in transmission block, be stored in the storage area of the buffer split.
When number of retransmissions is limited, first time can be received can not the bit storage of this encoding block that receives of the bit of encoding block of correct decoding and second time in the storage area of buffer, when receiving the bit of this encoding block of transmission for the third time, need not be stored in the storage area of buffer, directly in buffer on chip, the bit (systematic bits, the first check bit and/or the second check bit) that the first time of this encoding block, second time and third time receive be merged to carry out decoding.
Step S105: this encoding block that record first time and second time store is in the initial address of the storage area of this buffer.
Transmitting terminal first time transmission package contains the whole systematic bits of this encoding block, and the bit of following transmission can be random, determines according to actual conditions, and such as second time transmits the first check bit of this encoding block, transmits the second check bit of this encoding block for the third time; Or, second time hop first check bit and part second check bit, for the third time hop first check bit and part second check bit.The bit storage that transmitting terminal transmits with second time for the first time, in the storage area of the buffer of receiving terminal, namely corresponds to this encoding block first time and the bit be stored in for the second time in the storage area of this buffer.
If the size of second space is less than the size in the first space of twice, this encoding block first time and second time store is needed to record in the initial address of the storage area of this buffer, so that carry out merging decoding below, carry out rate-matched.
Step S106: the bit obtaining this encoding block of third time transmission.
When transmitting terminal third time transmits the bit of this encoding block, receiving terminal obtains the bit of this encoding block of this third time transmission.
Step S107: this encoding block stored according to the first time of having recorded and second time, in the initial address of the storage area of this buffer, obtains the bit of this encoding block that first time and second time store.
According to the first time of having recorded and the initial address of this encoding block stored for the second time at the storage area of this buffer, the bit of this encoding block of first time and storage for the second time can be obtained in both the buffers.
Step S108: the bit merging this encoding block that the first time of acquisition and the bit of this encoding block of second time storage and the third time of acquisition retransmit in buffer on chip, carries out decoding to this encoding block.
Buffer on chip is the dynamic buffer that current data block uses, and it and buffer are separate.In buffer on chip, the bit of this encoding block that the bit of this encoding block that the first time obtained and second time store and the third time of acquisition retransmit is merged, decoding is carried out to this encoding block.
In reality, if an encoding block is through 3 transmission, so transmitting terminal buffer transmits the transmission schematic diagram of the bit of this encoding block as shown in Figure 7, and first time, T1 all comprised the systematic bits of this encoding block, other transmission below can be random, determines as the case may be.Receiving terminal stores through 2 times, and the buffer in subscriber equipment becomes as shown in Figure 8.In figure, grid square frame is the bit stored first time, and snowflake square frame is the bit that second time stores.In superincumbent second time transmission, suppose RV=3, so its position corresponding in both the buffers should back segment in fig. 8, but because segmentation only has KW/2 to the storage area of the first check bit and the second check bit, therefore the leading portion position of twice storage bit being above moved to buffer is needed, and initial address in both the buffers corresponding for the bit of twice storage is recorded, to merge future, carry out rate-matched.After third time, transmission was come, the combination situation in buffer on chip as shown in Figure 9, although buffer does not open 3*KW size, does not abandon any bit, so there is no any performance loss.
And for example, when the situation of restricted rate-matched, if an encoding block is through 3 transmission, so transmitting terminal buffer transmits the transmission schematic diagram of the bit of this encoding block as shown in Figure 10, first time, T1 all comprised the systematic bits of this encoding block, other transmission below can be random, determines as the case may be.Receiving terminal stores through 2 times, and the buffer in subscriber equipment becomes as shown in figure 11.In figure, grid square frame is the bit stored first time, and snowflake square frame is the bit that second time stores.In superincumbent second time transmission, suppose RV=3, so its position corresponding in both the buffers should back segment in fig. 11, but because segmentation only has KW/2 to the storage area of the first check bit and the second check bit, therefore we need the leading portion position of twice storage bit being above moved to buffer, and initial address in both the buffers corresponding for the bit of twice storage is recorded, to merge future, carry out rate-matched.After third time, transmission was come, the combination situation in buffer on chip as shown in figure 12, although buffer does not distribute the storage area of 2.5*KW size, does not abandon any bit, so there is no any performance loss.
Consult Figure 13, Figure 13 is the method schematic diagram compared with the prior art that the present invention stores the hybrid transmission block automatically resending request.Subscriber equipment is Category3 type, channel type be EVA70, TDDUL/DL be configured to 5, modulator-demodulator 16QAM modulates, one two receipts, under the code rate of 0.93, the size of transmission block TB is: { 25456,0,0,25456,25456,0,0,25456,25456,25456}, the present invention and prior art use the buffer with formed objects, and as can be seen from the figure, throughput of the present invention has obvious lifting.
In sum, the present invention obtains the transmission block of the HARQ in downstream signal transmitting procedure, and transmission block comprises at least one encoding block; The encoding block that can not be properly decoded is stored in the storage area of the buffer split, and the storage area of buffer carries out dynamic partition in units of encoding block.In this way, in units of encoding block, the storage area of dynamic partition buffer, the encoding block of correct decoding in the scheme split in units of transmission block can be avoided to take the phenomenon of valuable storage area, thus can reduce the capacity needed for buffer, and promote the service efficiency of buffer.
Consult Figure 14 to Figure 15, Figure 14 to Figure 15 is the present invention carries out method one execution mode of decoding flow chart to the hybrid transmission block automatically resending request, comprising:
If before obtaining the encoding block in transmission block, carry out dynamic partition to the storage area of buffer in units of encoding block, then this flow process comprises step S201, does not comprise step S203; If after obtaining the encoding block in transmission block, carry out dynamic partition to the storage area of buffer in units of encoding block, then this flow process does not comprise step S201, comprises step S203.
Step S201: before obtaining the encoding block in transmission block, in units of maximum encoding block, dynamic partition is carried out to the storage area of buffer.
Before obtaining the encoding block in transmission block, in units of maximum encoding block, the storage area of dynamic partition buffer, and no longer in units of transmission block, the storage area of buffer is split.
Step S201 specifically comprises: the first storage area being partitioned into this buffer, to the systematic bits of each encoding block, according to the code rate of transmitting data, determines whether that dynamic partition goes out the second storage area of this buffer to the check bit of each encoding block.Wherein, the size of this first storage area is the size of maximum encoding block, and this check bit comprises the first check bit and the second check bit.
Step S202: obtain the hybrid transmission block automatically resending request in downstream signal transmitting procedure, this transmission block comprises at least one encoding block.
1-13 encoding block is generally comprised in a transmission block, each encoding block has the cyclic redundancy check (CRC) code of oneself to be used for detecting this encoding block whether correct decoding, therefore there will be some encoding blocks in a transmission block to be properly decoded, the situation that other encoding block can not be properly decoded.
Step S203: after obtaining at least one encoding block in transmission block, in units of the encoding block that can not be properly decoded, dynamic partition is carried out to the storage area of buffer.
After obtaining at least one encoding block in transmission block, in units of the current encoding block that can not be properly decoded, the storage area of dynamic partition buffer, and no longer in units of transmission block, the storage area of buffer is split.
Step S203 specifically comprises: be partitioned into the first storage area of this buffer to the systematic bits of each current encoding block that can not be properly decoded, according to the code rate of transmitting data, determine whether that the second storage area of this buffer of dynamic partition is to the check bit of each current encoding block that can not be properly decoded.Wherein, the size of this first storage area is the size of the current encoding block that can not be properly decoded, and this check bit comprises the first check bit and the second check bit.
Step S204: the encoding block that can not be properly decoded in this at least one encoding block is stored in the storage area of the buffer split, and this encoding block of record first time and second time storage is in the initial address of the storage area of this buffer, wherein, the storage area of this buffer carries out dynamic partition in units of encoding block.
If the size of second space is less than the size in the first space of twice, this encoding block first time and second time store is needed to record in the initial address of the storage area of this buffer, so that carry out merging decoding below, carry out rate-matched.
Step S205: after the bit of this encoding block obtaining third time transmission, this encoding block stored according to the first time of having recorded and second time, in the initial address of the storage area of this buffer, obtains the bit of this encoding block that first time and second time store.
Step S206: the bit merging this encoding block of the bit of the first time of acquisition and this encoding block of second time storage and the third time transmission of acquisition in buffer on chip, carries out decoding to this encoding block.
The present invention obtains the transmission block of the HARQ in downstream signal transmitting procedure, and transmission block comprises at least one encoding block; The encoding block that can not be properly decoded is stored in the storage area of the buffer split, and the storage area of buffer carries out dynamic partition in units of encoding block; According to the initial address of encoding block at buffer record, obtain the bit that this encoding block stores, in conjunction with the bit of the third time transmission obtained, in buffer on chip, carry out merging decoding.In this way, in units of encoding block, the storage area of dynamic partition buffer, the encoding block be properly decoded in the scheme split in units of transmission block can be avoided to take the phenomenon of valuable storage area, thus the capacity needed for reduction buffer, and promote the service efficiency of buffer, and do not abandon any bit, therefore when decoding without any performance loss.
Consult Figure 16, Figure 16 is the structural representation of the present invention to device one execution mode that the hybrid transmission block automatically resending request stores, and this device comprises: the first acquisition module 101, memory module 102 and segmentation module 103.
First acquisition module 101 is for obtaining the hybrid transmission block automatically resending request in downstream signal transmitting procedure, and this transmission block comprises at least one encoding block.
Memory module 102 is for being stored in the storage area of the buffer split by the encoding block that can not be properly decoded in this at least one encoding block, and wherein, the storage area of this buffer carries out dynamic partition in units of encoding block.
Segmentation module 103 for carrying out dynamic partition to the storage area of this buffer in units of encoding block.
Segmentation module 103, specifically for being partitioned into the first storage area of this buffer to the systematic bits of each encoding block, according to the code rate of transmitting data, determines whether that dynamic partition goes out the second storage area of this buffer to the check bit of each encoding block.
Wherein, the size of this first storage area is the size of this encoding block, and this check bit comprises the first check bit and the second check bit.
Wherein, the size of this second storage area equals the size of this first storage area of twice, and the storage area of this first check bit and the second check bit is equal.
Wherein, the size of this second storage area is less than the size of this first storage area of twice, and the storage area of this first check bit and the second check bit is equal.
Wherein, if the code rate of transmitting data is greater than 0.33, then the size of the second storage area equals the size of the first storage area, and namely the size of the storage area of this first check bit and the second check bit is the half of the size of this first storage area respectively.
Wherein, if the code rate of transmitting data is less than or equal to 0.33, then the size of the second storage area equals the size of 1.5 times of first storage area.
This device also comprises: logging modle, the second acquisition module, the 3rd acquisition module and merging module.
Logging modle is for recording the initial address of this encoding block at the storage area of this buffer of first time and second time storage.
Second acquisition module is for obtaining the bit of this encoding block of third time transmission.
This encoding block that 3rd acquisition module is used for storing according to the first time of having recorded and second time, in the initial address of the storage area of this buffer, obtains the bit of this encoding block that first time stores with second time.
Merge the bit that module is used for merging in buffer on chip this encoding block that the first time of acquisition and the bit of this encoding block of second time storage and the third time of acquisition retransmit, decoding is carried out to this encoding block.
The encoding block that can not be properly decoded in the transmission block of the HARQ in downstream signal transmitting procedure is stored in the storage area of the buffer split by the present invention, and the storage area of buffer carries out dynamic partition in units of encoding block.In units of encoding block, the storage area of dynamic partition buffer, can avoid the encoding block of correct decoding in the scheme split in units of transmission block to take the phenomenon of valuable storage area, in this way, the capacity needed for buffer can be reduced, and promote the service efficiency of buffer.
Consult Figure 17, Figure 17 is the present invention carries out device one execution mode of decoding structural representation to the hybrid transmission block automatically resending request, and this device comprises: the first acquisition module 201, memory module 202, second acquisition module 203 and merging module 204.
First acquisition module 201 is for obtaining the hybrid transmission block automatically resending request in downstream signal transmitting procedure, and this transmission block comprises at least one encoding block.
Memory module 202 is for being stored in the storage area of the buffer split by the encoding block that can not be properly decoded in this at least one encoding block, and this encoding block of record first time and second time storage is in the initial address of the storage area of this buffer, wherein, the storage area of this buffer carries out dynamic partition in units of encoding block.
Second acquisition module 203 is for after the bit of this encoding block obtaining third time transmission, this encoding block stored according to the first time of having recorded and second time, in the initial address of the storage area of this buffer, obtains the bit of this encoding block that first time and second time store.
The bit of this encoding block that the third time merging the bit of this encoding block that module 204 stores for the first time and second time merging acquisition in buffer on chip and acquisition retransmits, carries out decoding to this encoding block.
The encoding block that can not be properly decoded in the transmission block of the HARQ in downstream signal transmitting procedure is stored in the storage area of the buffer split by the present invention, and the storage area of buffer carries out dynamic partition in units of encoding block; According to the initial address of encoding block at buffer record, obtain the bit that this encoding block stores, in conjunction with the bit of the third time transmission obtained, in buffer on chip, merge decoding.In units of encoding block, the storage area of dynamic partition buffer, the encoding block of correct decoding in the scheme split in units of transmission block can be avoided to take the phenomenon of valuable storage area, in this way, the capacity needed for buffer can be reduced, and promote the service efficiency of buffer, and do not abandon any bit, therefore when decoding without any performance loss.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (15)
1., to the method that the hybrid transmission block automatically resending request stores, it is characterized in that, comprising:
Obtain the hybrid transmission block automatically resending request in downstream signal transmitting procedure, described transmission block comprises at least one encoding block;
Be stored in the storage area of the buffer split by the encoding block that can not be properly decoded at least one encoding block described, wherein, the storage area of described buffer carries out dynamic partition in units of encoding block;
Wherein, the step that the storage area of described buffer carries out dynamic partition in units of encoding block comprises:
The first storage area being partitioned into described buffer, to the systematic bits of each encoding block, according to the code rate of transmitting data, determines whether that dynamic partition goes out the second storage area of described buffer to the check bit of each encoding block.
2. method according to claim 1, is characterized in that, the size of described first storage area is the size of described encoding block, and described check bit comprises the first check bit and the second check bit.
3. method according to claim 2, is characterized in that, the size of described second storage area equals the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
4. method according to claim 2, is characterized in that, the size of described second storage area is less than the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
5. method according to claim 4, is characterized in that, if the code rate of described transmitting data is greater than 0.33, then the size of described second storage area equals the size of described first storage area.
6. method according to claim 4, is characterized in that, if the code rate of described transmitting data is less than or equal to 0.33, then the size of described second storage area equals the size of 1.5 times of described first storage areas.
7. the method according to any one of claim 1 to 6, is characterized in that, described method also comprises:
The described encoding block that record first time and second time store is in the initial address of the storage area of described buffer;
Obtain the bit of the described encoding block of third time transmission;
The described encoding block stored according to the first time of having recorded and second time, in the initial address of the storage area of described buffer, obtains the bit of the described encoding block that first time and second time store;
In buffer on chip, merge the bit of the described encoding block that the first time of acquisition and the bit of described encoding block of second time storage and the third time of acquisition retransmit, decoding is carried out to described encoding block;
Wherein, the bit of the described encoding block that first time stores all comprises the systematic bits of described encoding block, and comprises whole check bits in the bit of the bit of the described encoding block stored for the first time, the bit of described encoding block stored for the second time and the described encoding block of third time re-transmission.
8. the hybrid transmission block automatically resending request is carried out to a method for decoding, it is characterized in that, comprising:
Obtain the hybrid transmission block automatically resending request in downstream signal transmitting procedure, described transmission block comprises at least one encoding block;
The encoding block that can not be properly decoded at least one encoding block described is stored in the storage area of the buffer split, and the described encoding block of record first time and second time storage is in the initial address of the storage area of described buffer, wherein, the storage area of described buffer carries out dynamic partition in units of encoding block;
After the bit of described encoding block obtaining third time transmission, the described encoding block stored according to the first time of having recorded and second time, in the initial address of the storage area of described buffer, obtains the bit of the described encoding block that first time and second time store;
In buffer on chip, merge the bit of the described encoding block of the bit of the first time of acquisition and the described encoding block of second time storage and the third time transmission of acquisition, decoding is carried out to described encoding block;
Wherein, the bit of the described encoding block that first time stores all comprises the systematic bits of described encoding block, and comprises whole check bits in the bit of the bit of the described encoding block stored for the first time, the bit of described encoding block stored for the second time and the described encoding block of third time re-transmission;
Wherein, the step that the storage area of described buffer carries out dynamic partition in units of encoding block comprises:
The first storage area being partitioned into described buffer, to the systematic bits of each encoding block, according to the code rate of transmitting data, determines whether that dynamic partition goes out the second storage area of described buffer to the check bit of each encoding block.
9. to the device that the hybrid transmission block automatically resending request stores, it is characterized in that, described device comprises:
First acquisition module, for obtaining the hybrid transmission block automatically resending request in downstream signal transmitting procedure, described transmission block comprises at least one encoding block;
Memory module, for being stored in the storage area of the buffer split by the encoding block that can not be properly decoded at least one encoding block described, wherein, the storage area of described buffer carries out dynamic partition in units of encoding block;
Wherein, described device also comprises segmentation module, and described segmentation module is used for carrying out dynamic partition to the storage area of described buffer in units of encoding block;
Wherein, described segmentation module is specifically for splitting the first storage area of described buffer to the systematic bits of each encoding block, according to the code rate of transmitting data, determine whether that the second storage area of buffer described in dynamic partition is to the check bit of each encoding block.
10. device according to claim 9, is characterized in that, the size of described first storage area is the size of described encoding block, and described check bit comprises the first check bit and the second check bit.
11. devices according to claim 10, is characterized in that, the size of described second storage area equals the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
12. devices according to claim 10, is characterized in that, the size of described second storage area is less than the size of described first storage area of twice, and the storage area of described first check bit and the second check bit is equal.
13. devices according to claim 12, is characterized in that, if the code rate of described transmitting data is greater than 0.33, then the size of described second storage area equals the size of described first storage area.
14. devices according to claim 12, is characterized in that, if the code rate of described transmitting data is less than or equal to 0.33, then the size of described second storage area equals the size of 1.5 times of described first storage areas.
15. devices according to any one of claim 9 to 14, it is characterized in that, described device also comprises:
Logging modle, for recording the initial address of described encoding block at the storage area of described buffer of first time and second time storage;
Second acquisition module, for obtaining the bit of the described encoding block of third time transmission;
3rd acquisition module, the described encoding block of the first time of having recorded for basis and storage for the second time, in the initial address of the storage area of described buffer, obtains for the first time and the bit of the described encoding block of storage for the second time;
Merge module, the bit of the bit of described encoding block that first time and second time for merging acquisition in buffer on chip store and the described encoding block that the third time of acquisition retransmits, carries out decoding to described encoding block;
Wherein, the bit of the described encoding block that first time stores all comprises the systematic bits of described encoding block, and comprises whole check bits in the bit of the bit of the described encoding block stored for the first time, the bit of described encoding block stored for the second time and the described encoding block of third time re-transmission.
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| CN101237241A (en) * | 2007-01-31 | 2008-08-06 | 大唐移动通信设备有限公司 | A method and system for realizing mixed automatic request re-transfer processing and channel decoding |
| CN102255712A (en) * | 2011-07-18 | 2011-11-23 | 东南大学 | Soft storage allocation method for hybrid automatic repeat request process of long term evolution system |
| CN202887175U (en) * | 2012-07-27 | 2013-04-17 | 上海晨思电子科技有限公司 | Controller of buffer storage device |
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| CN101237241A (en) * | 2007-01-31 | 2008-08-06 | 大唐移动通信设备有限公司 | A method and system for realizing mixed automatic request re-transfer processing and channel decoding |
| CN102255712A (en) * | 2011-07-18 | 2011-11-23 | 东南大学 | Soft storage allocation method for hybrid automatic repeat request process of long term evolution system |
| CN202887175U (en) * | 2012-07-27 | 2013-04-17 | 上海晨思电子科技有限公司 | Controller of buffer storage device |
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