CN102075285A - Rate matching method and device - Google Patents
Rate matching method and device Download PDFInfo
- Publication number
- CN102075285A CN102075285A CN2009102262436A CN200910226243A CN102075285A CN 102075285 A CN102075285 A CN 102075285A CN 2009102262436 A CN2009102262436 A CN 2009102262436A CN 200910226243 A CN200910226243 A CN 200910226243A CN 102075285 A CN102075285 A CN 102075285A
- Authority
- CN
- China
- Prior art keywords
- length
- harq
- circular buffer
- time
- bag
- 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.)
- Granted
Links
Images
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a rate matching method which comprises the following steps of: interleaving coded bit sequences with coded information bit sequence channels to obtain mother coed words; determining that the length NFB_Buffer of a circulating cache region to be an integral multiple of a preset value to ensure that symbols of overlapped parts are aligned during multiple times of transmission; sequentially storing NFB_Buffer bits of the mother code words into the circulating cache region; and selecting a section of mother code words from the circulating cache region to generate a data sub-packet, wherein the length of the data sub-packet is matched with the size of a distributed physical channel resource. The invention ensures that modulated symbols can be aligned according to a specific rule conforming to a system requirement during multiple-time transmission so as to improve the property of a link and reduce the complexity of system realization.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of speed matching method and device.
Background technology
At present, digital communication system is the communication system of using always.As shown in Figure 1, digital communication system is made up of transmitting terminal, channel and receiving terminal usually.Wherein, transmitting terminal generally includes parts such as information source, source encoder, channel encoder and modulator, receiving terminal generally includes demodulator, channel decoder, source decoder and the stay of two nights, has channel (or storage medium) between transmitting terminal and the receiving terminal, and has noise source in the channel.In digital communication system, channel code chain (comprising channel decoding, modulation etc.) is the key technology of whole digital communication physical layer, and it has determined the validity and the reliability of the transmission of digital communication system bottom.In up-to-date 3GPP LTE research on standard, channel code chain has adopted a series of up-to-date technology, when simplifying implementation complexity, has improved the physical layer transmission performance.Wherein, in up-to-date 3GPP standard agreement, adopted based on quadratic polynomial and replaced the channel coding schemes of the Turbo code of (Quadratic Polynomial Permutation is called for short QPP) interleaver as data service; Employing realizes sending the length of data and the coupling of distribute of the size of physical channel resources based on circulating buffer memory rate coupling (Circular Buffer Rate Matching abbreviates CBRM as) method.Simultaneously, in order to obtain the higher availability of frequency spectrum and hardware circuit solution, high-order modulating such as 16QAM, 64QAM have been adopted.
Turbo code is one of forward error correction coding of present optimum of generally acknowledging, in numerous standard agreements, be widely adopted chnnel coding solution as data traffic transmission, and along with the increase of deciphering iterations, its decoding error-correcting performance will be by constantly perfect.Turbo code commonly used at present comprises binary system Turbo code and dual-binary system tailbaiting Turbo code.Usually the binary system Turbo coding of using is a kind of parallel cascade codes that has inner interleaver, is generally formed by two identical recursive systematic convolutional code (RSC) component code encoder parallel cascades of structure.In Wideband Code Division Multiple Access (WCDMA) and TDS-CDMA system, just used a kind of like this binary system Turbo code, structure as shown in Figure 2, the binary message sequence S of input
KGenerate one tunnel verification sequence P1 through first component code encoder
KSimultaneously, the binary message sequence S of input
KAfter interleaver in the process Turbo code interweaves, generate another road verification sequence P2 by second component code encoder
KAt this moment, if not to the coded-bit punching, then the bit rate output of Turbo coding is 1/3, and the sequences of code bits that output obtains is s
1, p1
1, p2
1, s
2, p1
2, p2
2... s
K, p1
K, p2
K, wherein, K is the length of the binary message sequence of input.
After encoding, information bit sequence utilize the circulating buffer memory rate matching algorithm to realize sending the length of data and the coupling of distribute of the size of physical channel resources.The circulating buffer memory rate matching process is can generate to delete the outstanding simple algorithm of surplus pattern performance.As shown in Figure 3, be that the sequences of code bits of Turbo coding output can be isolated three data bit streams after bit separation: systematic bits stream S, first check bit stream P1 and second check bit stream P2 under 1/3 the situation at code check.In the circulating buffer memory rate matching algorithm, each data flow will be rearranged by sub-interleaver separately, is called as in the piece to interweave.Systematic bits after resetting is placed on the starting position, places the check bit stream of two rearrangements subsequently alternately, be called as interblock and interweave.In above-mentioned, interweave and mother that interblock obtains after interweaving piles up in the circular buffer district.For the code check (Rate) of expectation, it is that somewhere starting point from the circular buffer district calls over L bit that the bit of circular buffering rate-matched is selected, as the output of rate-matched, wherein the length of L and distribute the size of physical channel resources to be complementary.Generally speaking, the bit that is selected for transmission can begin to be read out next from any one point in circular buffer district, if arrive the end in circular buffer district, then can continue read data around starting position to the circular buffer district, up to finish read L bit till.
Mixing automatic repeat requests (HARQ) is extremely important link adaptation techniques in a kind of digital communication system.Receiving terminal is deciphered the HARQ packet of its reception, if decoding correctly then the feeding back ACK signal give transmitting terminal, notify it to send new HARQ packet; Give transmitting terminal if decoding failure then feeds back the NAK signal, the request transmitting terminal resends the HARQ packet.Receiving terminal merges decoding by the packet that repeatedly retransmits being carried out steadily increase redundancy (Increasing Redundancy is called for short IR) or chase, can improve its successfully decoded probability, realizes the high reliability request of link transmission.
Mixing under the automatic repeat requests mode start position that in the circular buffer district, can specify different positions to read as each transmitting HARQ packet.Redundancy versions (Redundancy Version, abbreviate RV as) definition promptly determined a plurality of start positions that the HARQ packet reads in the circular buffer district, the redundancy versions value has just been determined the concrete start position that this transmitting HARQ packet reads in the circular buffer district.For example, in LTE, redundancy versions has defined the starting point that reads in the circular buffer district, is used to select a segment encode word to generate current HARQ bag.If the RV number is 4, then redundancy versions has indicated four positions equably with 0,1,2 and 3 from left to right orders in the circular buffer district.The long child bag of L that each HARQ retransmits is by the starting point from the redundancy versions definition, the L that chooses clockwise bit composition.Motion and standard that more concrete description can be mated with reference to the virtual circulating buffer memory rate of LTE are not described in detail in this.
When repeatedly transmitting, the HARQ packet that transmits is called HARQ bag.HARQ bag designator (HARQ subpacket identifier, abbreviate SPID as) be applied at present in the IEEE802.16e standard, it is identical with acting on of redundancy versions RV in essence, all can be used to determine the particular location of HARQ bag data in the circular buffer district.In the IEEE802.16e system, HARQ bag designator and the sub-packet length of HARQ have defined HARQ jointly and have wrapped in original position and length in the circular buffer district, wrap so that select a segment encode word to generate current HARQ in the circular buffer district.Wherein, the span of SPID be 00,01,10,11}.Chuan Shu SPID value one is decided to be 00 first, then welcome or the selecting in its scope in certain sequence of the SPID value when other retransmit.That is to say, when repeatedly transmitting, may reuse some SPID values, perhaps also can not use some SPID values.Under HARQ mechanism, may produce a plurality of HARQ bags under the data based on same female sign indicating number.When two or more HARQ bag read in female sign indicating number the same position bit, overlapping (Overlapping) phenomenon had just taken place.In order to improve systematic function, should avoid overlapping phenomenon part modulation symbol when modulating mapping not line up as far as possible, and cover more female code data.
In practical communication system, system assignment is subjected to a certain degree restriction for the length in the circular buffer district of each female code block.And the performance of the length in circular buffer district and whole link and implementation complexity have close getting in touch.When the circular buffer section length is chosen when improper, under HARQ mechanism, when repeatedly the different son bags of transmission overlap phenomenon, might cause the modulation symbols of different son bags not line up or problem that modulation symbol alignment situation does not meet system requirements takes place, thereby have a strong impact on the performance of whole communication link, perhaps increase the implementation complexity of communication link greatly.
Specifically, be example with the 16e communication system, as shown in Figure 4, be Nep in information bit sequence length, encoder bit rate is that the circular buffer district is K (K=3*Nep-2) bit under 1/3 the situation, promptly the circular buffer section length is inequality with female sign indicating number code word size.And the length of the child bag S1 of transmission is L1 bit for the first time, and modulation system is 64QAM; The length of the child bag S2 of transmission is L2 bit for the second time, and modulation system is 64QAM.The child bag S2 of transmission continues to begin transmission from the 0th bit in circular buffer district when having transmitted last bit of circular buffer district (i.e. K-1 bit) for the second time.So, after first son bag modulation mapping, the 0th bit in circular buffer district, the 1st bit, the 2nd bit, the 3rd bit, the 4th bit, the 5th bit have been formed the 0th modulation symbol jointly.After second son bag modulation mapping, K-4 the bit in circular buffer district, a K-3 bit, a K-2 bit, a K-1 bit, the 0th bit, the 1st bit have been formed n modulation symbol jointly.Wherein, bit index is since 0, and the modulation symbol index is since 0.As seen, because that the circular buffer section length is chosen is improper, the 0th bit in circular buffer district and the 1st bit position in twice transmission modulation symbol does not line up.That is to say,, cause in twice transmission that the position of bit in modulation symbol of the lap that the first son bag and second son wrap do not line up because the circular buffer section length is chosen improperly.As 2nd bit of n+1 modulation symbol, and do not line up with first sub the 0th modulation symbol or the 1st modulation symbol that wraps from the circular buffer district.Briefly, lap modulation symbol when modulating mapping of first son bag and second son bag does not line up.
Summary of the invention
Position when repeatedly transmitting in order to solve same bits in modulation symbol is inequality, be that the modulation symbol in the different pieces of information bag does not line up when under the identical modulating mode overlapping phenomenon taking place, thereby cause the problem of link performance decline or increase system implementation complexity, the present invention proposes a kind of speed matching method and device.
Speed matching method provided by the invention comprises step:
To interweave to the sequences of code bits after the information bit sequence chnnel coding and obtain female sign indicating number code word;
Determine the length N in circular buffer district
FB_BufferBe the integral multiple of predetermined value, make when repeatedly transmitting the lap symbol aligned;
N with described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively;
From the circular buffer district, select one section female sign indicating number code word to produce data sub-packets, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.
Rate-matched device provided by the invention comprises:
Interleaver is used for obtaining the sequences of code bits after the information bit sequence chnnel coding is interweaved female sign indicating number code word;
The length determining unit is used for determining the length N in circular buffer district
FB_BufferBe the integral multiple of predetermined value, make when repeatedly transmitting the lap symbol aligned;
The circular buffer district is used to store the N of described female sign indicating number code word
FB_BufferIndividual bit;
Rate matchers is used for selecting one section female sign indicating number code word to produce data sub-packets from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.
Utilize speed matching method provided by the invention and device, has following beneficial effect: the selection of the length by the circular buffer district, can farthest guarantee to transmit data sub-packets when overlapping, lap is-symbol or half symbol or per two symbol aligned, can avoid because symbol does not line up the problem of the HARQ retransmission performance decline that causes, thereby improve the performance of link, the complexity that the reduction system realizes.
Description of drawings
Fig. 1 is to be the structured flowchart of digital communication system of the prior art;
Fig. 2 is the channel encoder structure chart of available technology adopting Turbo coding;
Fig. 3 is the schematic diagram of the rate-matched process under the situation of IEEE802.16e standard, 1/3 code check, employing Turbo coding in the prior art;
Fig. 4 is to be according to prior art is analyzed the schematic diagram that modulation symbol does not line up;
Fig. 5 flows out figure for the speed matching method that the present invention proposes;
The rate-matched structure drawing of device that Fig. 6 proposes for the present invention;
Fig. 7 overlaps but the annular schematic diagram of symbol aligned for one or two transmission of embodiment of the invention bag;
Fig. 8 overlaps but half symbol aligned annular schematic diagram for 2 two transmission of embodiment of the invention bag;
Fig. 9 overlaps but the annular schematic diagram of symbol aligned for 3 two transmission of embodiment of the invention bag;
Figure 10 overlaps but the annular schematic diagram of symbol aligned for 4 two transmission of embodiment of the invention bag;
Figure 11 overlaps but the annular schematic diagram of symbol aligned for 5 two transmission of embodiment of the invention bag;
Figure 12 overlaps but the annular schematic diagram of symbol aligned for 6 two transmission of embodiment of the invention bag;
Figure 13 overlaps but the annular schematic diagram of symbol aligned for 7 two transmission of embodiment of the invention bag;
Figure 14 overlaps but the annular schematic diagram of symbol aligned for 8 two transmission of embodiment of the invention bag.
Embodiment
Consider that two transmission that may occur in the current techniques wrap in the symbol that takes place when overlapping and do not line up, or half symbols does not line up, or alignment thereof does not meet the problem of system's particular requirement, the present invention does not line up the problem of the HARQ retransmission performance decline that causes by adopting the speed matching method that the circular buffer section length is limited owing to symbol in the time of can avoiding rate-matched.
The speed matching method that the present invention proposes as shown in Figure 5, may further comprise the steps:
S101, to interweave to the sequences of code bits after the information bit sequence chnnel coding and obtain female sign indicating number code word, preferably, the mode that information bit sequence is encoded comprises one of following: the turbo sign indicating number, adopt the Turbo coding when stinging tail turbo sign indicating number, low density parity check code chnnel coding.
S102 determines the length N in circular buffer district
FB_BufferBe the integral multiple of predetermined value, make when repeatedly transmitting, as retransmitting and when repeatedly transmitting, adopt the data sub-packets lap symbol aligned of identical order of modulation modulation makeing mistakes.As previously mentioned, existing redundancy versions has been determined a plurality of start positions that the HARQ packet reads in the circular buffer district, HARQ bag designator is used for determining the particular location of HARQ bag data in the circular buffer district, determine that based on the present invention the length in circular buffer district is the technological means of the integral multiple of predetermined value according to these information, the data sub-packets lap symbol aligned that makes the identical modulation end of employing.
S103 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively.
S104, from the circular buffer district, select one section female sign indicating number code word to produce data sub-packets, the length of this data sub-packets with distribute the size of physical channel resources to be complementary, the mode of selecting by: from the somewhere starting point in circular buffer district call over L bit being complementary of the size of distribution physical channel resources as the output of rate-matched, the bit that is selected for transmission can begin to be read out next from any one point in circular buffer district, if arrive the end in circular buffer district, then can be around continuing read data to the starting position in circular buffer district, up to finish read L bit till.
So far, the rate-matched process finishes, and can modulate the back to the data sub-packets that produces then and adopt the transmission of the automatic repeat requests mechanism of mixing.Make when repeatedly transmitting that the data sub-packets that adopts identical order of modulation modulation is in the lap symbol aligned.
The symbol aligned of indication comprises whole symbol aligned and half symbol aligned among the present invention.
Because in the automatic repeat requests HARQ transmission mode of ADAPTIVE MIXED, the length of each HARQ data sub-packets and the value of order of modulation are all relevant with the value of the number of subchannels of HARQ data sub-packets.And owing to the data sub-packets number of subchannels of each transmission may be changed by multiple factor affecting, so the length of the order of modulation of each transmission and HARQ bag all may change.But, the data sub-packets that adopts identical order of modulation modulation is under the situation of start position symbol aligned, because the present invention limits the length in circular buffer district, make the data sub-packets that guarantees transmission under the identical modulating mode when overlapping, lap is-symbol or half symbol or per two symbol aligned, can avoid because symbol does not line up the problem of the HARQ retransmission performance decline that causes, thereby improve the performance of link, the complexity that the reduction system realizes.
Be illustrated in figure 6 as the structure chart of rate-matched device provided by the invention, this rate-matched device comprises:
Interleaver is used for obtaining the sequences of code bits after the information bit sequence chnnel coding is interweaved female sign indicating number code word; The length determining unit is used for determining the length N in circular buffer district
FB_BufferBe the integral multiple of predetermined value, make when repeatedly transmitting, adopt the data sub-packets lap symbol aligned of identical order of modulation modulation; The circular buffer district is used to store the N of described female sign indicating number code word
FB_BufferIndividual bit; Rate matchers is used for selecting one section female sign indicating number code word to produce data sub-packets from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.
In embodiments of the invention one, speed matching method of the present invention may further comprise the steps:
S201, will interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word.
S202, the length N in determined circular buffer district in the present embodiment
FB_Buffer=N*Nmod, the order of modulation that adopts when wherein Nmod represents to modulate, N is a positive integer.
S203 is with the N of female sign indicating number code word
FB_BufferBit leaves in the described circular buffer district successively;
S204 selects one section female sign indicating number code word to produce data sub-packets (HARQ bag) from the circular buffer district, the length of HARQ bag with distribute the size of physical channel resources to be complementary.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.Certainly, the length of HARQ bag also can be integral multiple or other value of order of modulation Nmod.
Wherein wrap in the length of original position in the circular buffer district and HARQ bag, from the circular buffer district, select bit to produce the HARQ bag of current transmission according to HARQ.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: suppose that the transmission first time of HARQ bag and the SPID value that retransmits for the first time are 0,1.Transmission for the first time and the HARQ bag that retransmits are for the first time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.
From length is N
FB_BufferThe circular buffer district in the HARQ bag selecting last L2 bit to form to retransmit for the first time, wherein, L2 be the sub length of wrapping of HARQ that retransmits for the first time.
For example, a length being arranged is the information bit sequence of 4800 bits; The order of modulation Nmod of the HARQ bag of twice transmission is 6; The length N in current circular buffer district
FB_BufferBe 9000 bits (being that Nmod is 6 integral multiple); The length L 1 of the HARQ of transmission bag is 6000 bits (being that Nmod is 6 even-multiple) for the first time, and the length L 2 of the HARQ bag that retransmits for the first time is 7248 bits (being that Nmod is 6 even-multiple).
Wherein, bit index is since 0, and the modulation symbol index is since 0.
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a4799} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 9000 bits, obtain circular buffer district data for b0, b1 ..., b8999}.For the first time the HARQ of transmission bag data be b0, b1 ..., b5999}, the HARQ that retransmits for the first time wrap data be b1752, b1753 ..., b8999}.
So for the first time the lap of the HARQ of transmission bag and the HARQ bag that retransmits for the first time be b1752, b1753 ..., b5999}.Because lap start position symbol b1752 is the initial bits of the 292nd modulation symbol of the HARQ bag of transmission for the first time, be again the initial bits of the 0th modulation symbol of the HARQ bag that retransmits for the first time.As seen, owing to adopt identical order of modulation, to wrap in lap be whole symbol aligned to HARQ in this twice transmission.
Two transmission bags that Fig. 7 has provided present embodiment overlap but the annular schematic diagram of symbol aligned.
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son and wrap in when overlapping, lap aligns by modulation symbol, can avoid owing to modulation symbol does not line up the problem that the HARQ retransmission performance that causes descends or increases system's implementation complexity.
In embodiments of the invention two, speed matching method of the present invention may further comprise the steps:
S301, will interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word.
S302 determines the length N in circular buffer district
FB_Buffer=N*Nmod/2, wherein Nmod represents a kind of order of modulation, N is a positive integer.
S303 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively;
S304 selects one section female sign indicating number code word to produce data sub-packets (HARQ bag) from the circular buffer district, the length of this HARQ bag with distribute the size of physical channel resources to be complementary.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.
Wherein wrap in the length of original position in the circular buffer district and HARQ bag, from the circular buffer district, select bit to produce the HARQ bag of current transmission according to HARQ.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: suppose that the transmission first time of HARQ bag and the SPID value that retransmits for the first time are 0,1.Transmission for the first time and the HARQ bag that retransmits are for the first time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.
From length is N
FB_BufferThe circular buffer district in the HARQ bag selecting last L2 bit to form to retransmit for the first time, wherein, L2 be the sub length of wrapping of HARQ that retransmits for the first time.
Wherein, bit index is since 0, and the modulation symbol index is since 0.
For example, a length being arranged is the information bit sequence of 912 bits; The order of modulation Nmod of current HARQ bag is 6; The length N in current circular buffer district
FB_BufferBe 2403 bits (being that Nmod/2 is 3 integral multiple); The length L 1 of the HARQ of transmission bag is 1500 bits (being that Nmod is 6 even-multiple) for the first time, and the length L 2 of the HARQ bag that retransmits for the first time is that 1800 bits are that Nmod is 6 even-multiple).
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a911} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 2403 bits, obtain circular buffer district data for b0, b1 ..., b2402}.For the first time the HARQ of transmission bag data be b0, b1 ..., b1499}, the HARQ that retransmits for the first time wrap data be b603, b604 ..., b2402}.
So for the first time the lap of the HARQ of transmission bag and the HARQ bag that retransmits for the first time be b603, b604 ..., b1499}.Because lap start position symbol b603 is the initial bits of the back half symbols in sub the 100th symbol that wraps of HARQ that transmits the first time, be again the initial bits of sub the 0th symbol that wraps of HARQ of re-transmission for the first time.As seen, adopt under the situation of identical order of modulation at two transmission bags, the lap of these two transmission bags is half symbol aligned.
Two transmission bags that Fig. 8 provides present embodiment overlap but the annular schematic diagram of half symbol aligned.
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son and wrap in when overlapping, lap is the alignment of half modulation symbol, can avoid owing to half modulation symbol does not line up the problem that the HARQ retransmission performance that causes descends or increases system's implementation complexity.
According to embodiments of the invention three, speed matching method of the present invention may further comprise the steps:
S401, will interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word.
S402 determines the length N in circular buffer district
FB_BufferIntegral multiple for the least common multiple of multiple different modulating exponent number.Be N
FB_Buffer(Nmod 1 for=N*lcm, Nmod 2, ..., Nmod n), wherein Nmod 1, Nmod 2, ..., Nmod n represent respectively first kind of order of modulation, second kind of order of modulation ..., n kind order of modulation, n represents the number of different order of modulation, lcm () expression is asked least common multiple to the number in the bracket, and N is a positive integer.Can pre-determine the modulation of being adopted in the re-transmission modulation that makes mistakes before carrying out transfer of data, be a plurality of in order of modulation, adopts this method to determine the length in circular buffer district.
S403 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively
S404 selects one section female sign indicating number code word to produce data sub-packets (HARQ bag) from the circular buffer district, the length of this HARQ bag with distribute the size of physical channel resources to be complementary.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.
Wrap in the length of original position in the circular buffer district and HARQ bag according to HARQ, from the circular buffer district, select bit to produce the HARQ bag of current transmission.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: the transmission first time of hypothesis HARQ bag in the present embodiment, the SPID value that retransmits for the first time and retransmit for the second time is respectively 0,1,3.Transmission for the first time, the HARQ bag that retransmits for the first time and retransmit is for the second time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.
From length is N
FB_BufferThe circular buffer district in the HARQ bag selecting last L2 bit to form to retransmit for the second time, wherein, L2 be the sub length of wrapping of HARQ that retransmits for the second time.
With length is N
FB_BufferLast bit position in circular buffer district be that the center is selected L3 bit to form to retransmit HARQ bag for the first time, that is, last bit of circular buffer district be the center of son bag, L3 be the sub length of wrapping of the HARQ of re-transmission for the first time.
Wherein, bit index is since 0, and the modulation symbol index is since 0.
For example, a length being arranged is the information bit sequence of 1800 bits; Suppose transmission for the first time, the order of modulation of the HARQ bag that retransmits for the first time and retransmit for the second time is respectively 6,4,4; The length N in current circular buffer district
FB_BufferBe 4824 bits (be 6,4,4 least common multiple is 12 integral multiple); The length L 1 of the HARQ of transmission bag is 2652 bits (being that Nmod is 6 even-multiple) for the first time, the length L 2 of the HARQ bag that retransmits for the first time is 3664 bits (being that Nmod is 4 even-multiple), and the length L 3 of the HARQ bag that retransmits for the second time is 3240 bits (being that Nmod is 4 even-multiple).
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a1799} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 4824 bits, obtain circular buffer district data for b0, b1 ..., b4823}.For the first time the HARQ of transmission bag data be b0, b1 ..., b2651}, it is { b1160, b1161 that the HARQ that retransmits for the first time wraps data, ..., b4823}, the HARQ that retransmits for the second time bag data be b3204, and b3205 ..., b4823, b0, b1 ..., b1619}.
So the lap of the HARQ bag that adopts the HARQ bag that retransmits the first time of identical order of modulation and retransmit for the second time be b3204 ..., b4823} and b1160 ..., b1619}.Because b1160 is respectively the initial bits that retransmits for the first time the 0th modulation symbol of HARQ bag, it is again the initial bits that retransmits for the second time the 695th modulation symbol of HARQ bag, shown in the son of twice transmission wrap in lap b3204 ..., b4823} start position symbol aligned; Simultaneously, because b3204 is respectively the initial bits that retransmits for the second time the 0th modulation symbol of HARQ bag, be again the initial bits that retransmits for the first time the 511st modulation symbol of HARQ bag, shown in the son of twice transmission wrap in lap { b1160, ..., b1619} start position symbol aligned.As seen, the HARQ of this twice transmission bag lap aligns by modulation symbol.
Two transmission bags that Fig. 9 has provided present embodiment overlap but the annular schematic diagram of symbol aligned.
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son and wrap in when overlapping, lap can be avoided owing to modulation symbol does not line up the problem that the HARQ retransmission performance that causes descends or increases system's implementation complexity by the modulation alignment.
According to embodiments of the invention four, speed matching method of the present invention may further comprise the steps:
S501, will interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word.
S502, the length in definite circular buffer district is the integral multiple of byte length.Be N
FB_Buffer=N*8, N are positive integer.
S503 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively.
S504 selects one section female sign indicating number code word to produce data sub-packets with the circulation selection mode from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.
Wrap in the length of original position in the circular buffer district and HARQ bag according to HARQ, from the circular buffer district, select bit to produce the HARQ bag of current transmission.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: suppose that the transmission first time of HARQ bag and the SPID value that retransmits for the first time are 0,1.Transmission for the first time and the HARQ bag that retransmits are for the first time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.
From length is N
FB_BufferThe circular buffer district in, serve as son bag original position with the L0 bit in the buffer memory, the HARQ bag of selecting L2 bit to form to retransmit for the first time, wherein, L2 be the sub length of wrapping of the HARQ of re-transmission for the first time.
Wherein, bit index is since 0, and the modulation symbol index is since 0.
For example, a length being arranged is the information bit sequence of 720 bits; The order of modulation Nmod of HARQ bag is 4 (integral multiples of the Nmod that adopts when byte length is modulation); The length N in current circular buffer district
FB_BufferBe 2000 bits (are 8 integral multiple); The length L 1 of the HARQ of transmission bag is 1424 bits (being that Nmod is 4 even-multiple) for the first time, and the length L 2 of the HARQ bag that retransmits for the first time is 1568 bits (being that Nmod is 4 even-multiple).
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a720} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 2000 bits, obtain circular buffer district data for b0, b1 ..., b1999}.For the first time the HARQ of transmission bag data be b0, b1 ..., b1423}, the HARQ that retransmits for the first time wrap data be b1424, b1425 ..., b1999, b0, b1 ..., b991}.
So for the first time the lap of the HARQ of transmission bag and the HARQ bag that retransmits for the first time be b0, b1 ..., b991}.Owing to b0 is the initial bits of the 0th modulation symbol that transmitting HARQ the wraps first time, be again the initial bits that retransmits for the first time sub the 576th modulation symbol that wraps of HARQ.As seen, under the situation that adopts identical order of modulation, the lap is-symbol alignment of these two transmission bags.
Two transmission bags that Figure 10 has provided present embodiment overlap but the annular schematic diagram of symbol aligned.
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son wraps in when overlapping, lap is-symbol or half symbol aligned, can avoid not lining up or half symbol does not line up the problem that the HARQ retransmission performance that causes descends or increases system's implementation complexity owing to modulation symbol.
According to embodiments of the invention five, speed matching method of the present invention may further comprise the steps:
S601, will interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word.
S602 determines the length N in circular buffer district
FB_BufferBe the integral multiple of the least common multiple of the order of modulation that adopts in byte length and when modulation.Be N
FB_Buffer=N*lcm (Nmod, 8), wherein Nmod represents a kind of order of modulation, bit number that byte is contained of 8 expressions, lcm () expression is asked least common multiple to the number in the bracket, and N is a positive integer.
S603 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively.
S604 selects one section female sign indicating number code word to produce data sub-packets from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.
Wherein wrap in the length of original position in the circular buffer district and HARQ bag, from the circular buffer district, select bit to produce the HARQ bag of current transmission according to HARQ.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: suppose that the transmission first time of HARQ bag and the SPID value that retransmits for the first time are 0,3.Transmission for the first time and the HARQ bag that retransmits are for the first time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.With length is N
FB_BufferLast bit position in circular buffer district be that the center is selected L2 bit to form to retransmit HARQ bag for the first time, wherein, L2 be the sub length of wrapping of HARQ that retransmits for the first time.
Wherein, bit index is since 0, and the modulation symbol index is since 0.
For example, a length being arranged is the information bit sequence of 1024 bits; The order of modulation Nmod of current HARQ bag is 6; The length N in current circular buffer district
FB_BufferBe 2856 bits (being that 6,8 least common multiple is 24 integral multiple); The length L 1 of the HARQ of transmission bag is 1728 bits (being that Nmod is 6 even-multiple) for the first time, and the length L 2 of the HARQ bag that retransmits for the first time is 2304 bits (being that Nmod is 6 even-multiple).
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a1023} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 2856 bits, obtain circular buffer district data for b0, b1 ..., b2855}.For the first time the HARQ of transmission bag data be b0, b1 ..., b1727}, the HARQ that retransmits for the first time wrap data be b1704, b1705 ..., b2855, b0, b1 ..., b1151}.
So for the first time the lap of the HARQ of transmission bag and the HARQ bag that retransmits for the first time be b1704, b1705 ..., b1727} and b0, b1 ..., b1151}.Because b0 is the initial bits of the 0th modulation symbol of the transmission first time, be again the initial bits of the 192nd modulation symbol of the re-transmission first time; And b1704 is the initial bits of the 284th modulation symbol of the transmission first time, is again the initial bits of the 0th modulation symbol of the re-transmission first time.So the alignment of the lap is-symbol of the data sub-packets of this twice transmission.
Two transmission bags that Figure 11 has provided present embodiment overlap but the annular schematic diagram of symbol aligned.
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son and wrap in when overlapping, the alignment of lap is-symbol, can avoid owing to modulation symbol does not line up the problem that the HARQ retransmission performance that causes descends or increases system's implementation complexity.
According to embodiments of the invention six, speed matching method of the present invention may further comprise the steps:
S701, will interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word.
S702, the length of determining the circular buffer district is the integral multiple of the least common multiple of multiple different modulating exponent number and byte length.Be N
FB_Buffer=N*lcm (Nmod 1, and Nmod 2 ..., Nmod n, 8), wherein Nmod 1, and Nmod 2, ..., Nmod n represent first kind of order of modulation, second kind of order of modulation ..., n kind order of modulation, n represents the number of different order of modulation, bit number that byte is contained of 8 expressions, lcm () expression is asked least common multiple to the number in the bracket, and N is an integer.
S703 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively.
S704 selects one section female sign indicating number code word to produce data sub-packets from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.
Wrap in the length of original position in the circular buffer district and HARQ bag according to HARQ, from the circular buffer district, select bit to produce the HARQ bag of current transmission.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: suppose that the transmission first time of HARQ bag, the SPID value that retransmits and retransmit for the second time for the first time are respectively 0,1,3.Transmission for the first time, the HARQ bag that retransmits for the first time and retransmit is for the second time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.
From length is N
FB_BufferThe circular buffer district in the HARQ bag selecting last L2 bit to form to retransmit for the first time, wherein, L2 be the sub length of wrapping of HARQ that retransmits for the first time.
With length is N
FB_BufferLast bit position in circular buffer district be that the center is selected L3 bit to form to retransmit HARQ bag for the second time, wherein, L3 be the sub length of wrapping of HARQ that retransmits for the second time.
Wherein, bit index is since 0, and the modulation symbol index is since 0.
For example, a length being arranged is the information bit sequence of 1160 bits; Transmission for the first time, the order of modulation of the HARQ bag that retransmits for the first time and retransmit for the second time is respectively 6,4,6; The length N in current circular buffer district
FB_BufferBe 3000 bits (being 6,4, the integral multiple of 8 least common multiple 24); The length L 1 of the HARQ of transmission bag is 1860 bits (being that order of modulation Nmod is 6 even-multiple) for the first time, the length L 2 of the HARQ bag that retransmits for the first time is 2400 bits (being that order of modulation Nmod is 4 even-multiple), and the length L 3 of the HARQ bag that retransmits for the second time is 1920 bits (being that order of modulation Nmod is 6 even-multiple).
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a1159} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 3000 bits, obtain circular buffer district data for b0, b1 ..., b2999}.For the first time the HARQ of transmission bag data be b0, b1 ..., b1859}, the HARQ that retransmits for the first time bag data be b600, b601 ..., b2999}, for the second time the HARQ that retransmits sub wrap data be b2040, b2041 ..., b2999, b0, b1 ..., b959}.
So for the first time the lap of the HARQ of transmission bag and the HARQ bag that retransmits for the second time be b0, b1 ..., b959}.Owing to b0 is the initial bits of the 0th modulation symbol that transmitting HARQ the wraps first time, be again the initial bits that retransmits for the second time sub the 160th modulation symbol that wraps of HARQ.The lap is-symbol alignment of the HARQ bag that as seen, retransmits the transmission for the first time and the second time.
Two transmission bags that Figure 12 has provided present embodiment overlap but the annular schematic diagram of symbol aligned.
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son and wrap in when overlapping, lap can be avoided owing to modulation symbol does not line up the problem that the HARQ retransmission performance that causes descends or increases system's implementation complexity by the modulation symbol alignment.
According to embodiments of the invention seven, speed matching method of the present invention may further comprise the steps:
S801, will interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word.
S802 determines the length N in circular buffer district
FB_BufferIntegral multiple for the length N ep of information bit sequence.Be N
FB_Buffer=N*Nep, wherein Nep represents the length of an information bit sequence, N is a positive integer.
S803 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively.
S804 selects one section female sign indicating number code word to produce data sub-packets from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.
Wrap in the length of original position in the circular buffer district and HARQ bag according to HARQ, from the circular buffer district, select bit to produce the HARQ bag of current transmission.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: suppose that the transmission first time of HARQ bag and the SPID value that retransmits for the first time are 0,2.The HARQ bag of supposing transmission for the first time and retransmitting is for the first time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.
With length is N
FB_BufferCentre position, circular buffer district be that the center of the HARQ bag that retransmits for the first time selects L2 bit to form HARQ bag, L2 be the sub length of wrapping of HARQ that retransmits for the first time.
Wherein, bit index is since 0, and the modulation symbol index is since 0.
For example, the order of modulation Nmod of HARQ bag is 6; It is the information bit sequence of 960 (being that order of modulation Nmod is 6 integral multiple) bit that a length is arranged; The length N in current circular buffer district
FB_BufferBe 2880 bits (being the integral multiple of information bit sequence length 960); The length L 1 of the HARQ of transmission bag is 1212 bits (length is that Nmod is 6 even-multiple) for the first time, and the length L 2 of the HARQ bag that retransmits for the first time is 1656 bits (length is that Nmod is 6 even-multiple).
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a959} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 2880 bits, obtain circular buffer district data for b0, b1 ..., b2779}.For the first time the HARQ of transmission bag data be b0, b1 ..., b1211}, the HARQ that retransmits for the first time wrap data be b612, b613 ..., b2267}.
So for the first time the lap of the HARQ of transmission bag and the HARQ bag that retransmits for the first time be b612, b613 ..., b1211}.Owing to b612 is the initial bits of the 102nd modulation symbol that transmitting HARQ the wraps first time, be again the initial bits that retransmits for the first time sub the 0th symbol that wraps of HARQ.As seen, the lap is-symbol of these two transmission bags is alignd.
Two transmission bags that Figure 13 has provided present embodiment overlap but the annular schematic diagram of symbol aligned.
Further, the length of described female sign indicating number code word is the integral multiple of information bit sequence length, and the length in determined circular buffer district is identical with the length of described female sign indicating number code word.For example under 1/3 encoder bit rate situation, the length N of circular buffer then
FB_BufferBe 3 times of information code length,
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son and wrap in when overlapping, lap can be avoided owing to modulation symbol does not line up the problem that the HARQ retransmission performance that causes descends or increases system's implementation complexity by the modulation symbol alignment.
According to embodiments of the invention eight, speed matching method of the present invention may further comprise the steps:
S901, to interweave to the sequences of code bits after the information bit sequence chnnel coding obtains female sign indicating number code word, and it is one of following that the mode that information bit sequence is encoded comprises: the turbo sign indicating number, adopt the Turbo coding when stinging tail turbo sign indicating number, low density parity check code chnnel coding.
S902, the length of determining the circular buffer district is half the integral multiple of least common multiple of multiple different modulating exponent number.Be N
FB_Buffer((Nmod 1 for lcm for=N*, Nmod 2, ..., Nmod n)/2), wherein Nmod 1, Nmod 2, ..., Nmod n represent respectively first kind of order of modulation, second kind of order of modulation ..., n kind order of modulation, n represents the number of different order of modulation, lcm () expression is asked least common multiple to the number in the bracket, and N is a positive integer.
S903 is with the N of described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively.
S903 selects one section female sign indicating number code word to produce data sub-packets with the circulation selection mode from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.Wherein, the data in the circular buffer district comprise systematic bits part and check bit part.The length of the HARQ bag that is transmitted in the present embodiment is the even-multiple of order of modulation Nmod.
Wrap in the length of original position in the circular buffer district and HARQ bag according to HARQ, from the circular buffer district, select bit to produce the HARQ bag of current transmission.From the circular buffer district, selecting bit to form in the process of HARQ bag, with the initial bits in circular buffer district next bit as last bit in circular buffer district.
Illustrate as follows: suppose the transmission first time of HARQ bag, the SPID value that retransmits for the first time and retransmit for the second time is respectively 0,1,3.Transmission for the first time, the HARQ bag that retransmits for the first time and retransmit is for the second time provided by following mode:
From length is N
FB_BufferThe original position in circular buffer district rise select before L1 bit form the HARQ bag of transmission for the first time, wherein, L1 be the sub length of wrapping of the HARQ of transmission for the first time.
From length is N
FB_BufferThe circular buffer district in the HARQ bag selecting last L2 bit to form to retransmit for the first time, wherein, L2 be the sub length of wrapping of HARQ that retransmits for the first time.
With length is N
FB_BufferLast bit position in circular buffer district be that the center is selected L3 bit to form to retransmit HARQ bag for the second time, L3 is for retransmitting for the second time the length that HARQ wraps.
Wherein, bit index is since 0, and the modulation symbol index is since 0.
For example, a length being arranged is the information bit sequence of 1552 bits; Suppose transmission for the first time, the order of modulation of the HARQ bag that retransmits for the first time and retransmit for the second time is respectively 6,4,4; The length N in current circular buffer district
FB_BufferBe 3672 bits (are half integral multiple of 6,4,4 least common multiple, also i.e. 6 integral multiple); The length L 1 of the HARQ of transmission bag is 1920 bits (being that Nmod is 6 even-multiple) for the first time, the length L 2 of the HARQ bag that retransmits for the first time is 2648 bits (being that Nmod is 4 even-multiple), and the length L 3 of the HARQ bag that retransmits for the second time is 2400 bits (being that Nmod is 4 even-multiple).
As mentioned above, information bit sequence a0, a1 ..., the female yard code word that a1551} obtains through coding with after interweaving put into length N
FB_BufferBe in the circular buffer district of 3672 bits, obtain circular buffer district data for b0, b1 ..., b3671}.For the first time the HARQ of transmission bag data be b0, b1 ..., b1919}, it is { b1024, b1025 that the HARQ that retransmits for the first time wraps data, ..., b3671}, the HARQ that retransmits for the second time bag data be b2472, and b2473 ..., b3671, b0, b1 ..., b1199}.
So the lap of the HARQ that retransmits for the first time bag and the HARQ bag that retransmits for the second time be b1024, b1025 ..., b1199} and b2472, b2473 ..., b3671}.Because b1024 is respectively the initial bits that retransmits for the first time the 0th modulation symbol of HARQ bag, be again the initial bits that retransmits for the second time the 556th modulation symbol of HARQ bag; And b2472 is respectively the initial bits that retransmits for the first time the 362nd modulation symbol of HARQ bag, is again the initial bits that retransmits for the second time the 0th modulation symbol of HARQ bag.As seen, the lap is-symbol of these two transmission bags is alignd.
Two transmission bags that Figure 14 has provided present embodiment overlap but the annular schematic diagram of symbol aligned.
Therefore, speed matching method in the present embodiment, can farthest guarantee to transmit son wraps in when overlapping, lap is by modulation symbol alignment, can avoid because modulation symbol does not line up or half modulation symbol does not line up that the HARQ retransmission performance that causes descends or the problem of increase system implementation complexity.
Further, the length N of circular buffer
FB_BufferCan be to be the length of unit with the soft bit information, promptly comprise N in the circular buffer
FB_BufferIndividual soft bit information;
Further, the length N of circular buffer
FB_BufferReferring to actual use in the HARQ transmission, is the buffer storage length of unit with the soft bit information.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. speed matching method is characterized in that the method comprising the steps of:
To interweave to the sequences of code bits after the information bit sequence chnnel coding and obtain female sign indicating number code word;
Determine the length N in circular buffer district
FB_BufferBe the integral multiple of predetermined value, make when repeatedly transmitting the lap symbol aligned;
N with described female sign indicating number code word
FB_BufferIndividual bit leaves in the circular buffer district successively;
From the circular buffer district, select one section female sign indicating number code word to produce data sub-packets, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.
2. the method for claim 1 is characterized in that,
Described predetermined value is half of order of modulation or order of modulation.
3. the method for claim 1 is characterized in that,
Described predetermined value is the least common multiple of multiple different modulating exponent number, or is half of least common multiple of multiple different modulating exponent number.
4. the method for claim 1 is characterized in that,
Described predetermined value is the length of information bit sequence.
5. the method for claim 1 is characterized in that,
Described predetermined value is a byte length.
6. the method for claim 1 is characterized in that,
Described predetermined value is the least common multiple of byte length and order of modulation.
7. the method for claim 1 is characterized in that,
Described predetermined value is the least common multiple of multiple different modulating exponent number and byte length.
8. the method for claim 1 is characterized in that,
The length in described circular buffer district is for being the length of unit with the soft bit information.
9. a rate-matched device is characterized in that, this device comprises:
Interleaver is used for obtaining the sequences of code bits after the information bit sequence chnnel coding is interweaved female sign indicating number code word;
The length determining unit is used for determining the length N in circular buffer district
FB_BufferBe the integral multiple of predetermined value, make when repeatedly transmitting the lap symbol aligned;
The circular buffer district is used to store the N of described female sign indicating number code word
FB_BufferIndividual bit;
Rate matchers is used for selecting one section female sign indicating number code word to produce data sub-packets from the circular buffer district, the length of this data sub-packets with distribute the size of physical channel resources to be complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910226243 CN102075285B (en) | 2009-11-25 | 2009-11-25 | Rate matching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910226243 CN102075285B (en) | 2009-11-25 | 2009-11-25 | Rate matching method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102075285A true CN102075285A (en) | 2011-05-25 |
| CN102075285B CN102075285B (en) | 2013-06-05 |
Family
ID=44033644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910226243 Expired - Fee Related CN102075285B (en) | 2009-11-25 | 2009-11-25 | Rate matching method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102075285B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015123842A1 (en) * | 2014-02-20 | 2015-08-27 | 华为技术有限公司 | Coding rate matching processing method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8726121B2 (en) * | 2007-03-27 | 2014-05-13 | Qualcomm Incorporated | Circular buffer based rate matching |
| CN101330351B (en) * | 2007-06-20 | 2011-05-25 | 中兴通讯股份有限公司 | Method for mapping bit with priority based on circulation caching speed matching |
| WO2009057922A1 (en) * | 2007-10-29 | 2009-05-07 | Lg Electronics Inc. | Method of data transmission using harq |
| CN101227259B (en) * | 2008-01-11 | 2013-06-05 | 中兴通讯股份有限公司 | Method for data reading of limited length circulating buffer memory rate adaption |
| CN101217352B (en) * | 2008-01-11 | 2013-02-27 | 中兴通讯股份有限公司 | A buffering setting method of phase rate matching |
| CN101540654B (en) * | 2009-05-04 | 2011-07-27 | 普天信息技术研究院有限公司 | Method for interlacing rate matching and de-interlacing off-rate matching |
-
2009
- 2009-11-25 CN CN 200910226243 patent/CN102075285B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015123842A1 (en) * | 2014-02-20 | 2015-08-27 | 华为技术有限公司 | Coding rate matching processing method and device |
| CN105637767A (en) * | 2014-02-20 | 2016-06-01 | 华为技术有限公司 | Coding rate matching processing method and device |
| CN110572165A (en) * | 2014-02-20 | 2019-12-13 | 华为技术有限公司 | Method and device for processing rate matching of codes |
| CN110572165B (en) * | 2014-02-20 | 2020-07-24 | 华为技术有限公司 | Method and device for processing rate matching of codes |
| CN105637767B (en) * | 2014-02-20 | 2020-12-15 | 华为技术有限公司 | Method and device for processing rate matching of codes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102075285B (en) | 2013-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101867443B (en) | Rate matching method and device | |
| KR101648870B1 (en) | Methods and apparatus to generate multiple cyclic redundancy checks(crcs) | |
| CN101741527B (en) | Rate adaption method and device | |
| US8225165B2 (en) | Methods and devices for encoding data in communication systems | |
| CN105306165B (en) | Data transmission method for uplink and device | |
| CN105515719B (en) | A kind of data transmission method and device | |
| CN101217352B (en) | A buffering setting method of phase rate matching | |
| RU2236091C2 (en) | Method for data transmission/reception in data transfer system using hybrid automatic repetition request | |
| CN107070587B (en) | Selection of retransmission settings for HARQ in WCDMA and LTE networks | |
| CN101183875B (en) | Velocity matching method for limited longness circulation caching of Turbo code | |
| US8798200B2 (en) | Constellation mapping method | |
| CN103312442A (en) | Method and device for transmitting data based on finite-length circular buffer rate matching | |
| US7096401B2 (en) | Multi-mode hybrid ARQ scheme | |
| CN102075285B (en) | Rate matching method and device | |
| US20180351700A1 (en) | Convolutional code data sending method and apparatus | |
| CN102035617B (en) | Channel coding rate matching method and device in communication system | |
| CN102386998B (en) | A kind of PUCCH decoding method and device thereof | |
| KR20020075624A (en) | Method for transmitting packet having variable length using hybrid automatic repeat request | |
| KR20080031232A (en) | Method for transmitting and receiving packet having variable length using hybrid automatic repeat request |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20171125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |