CN107078839A - A kind of method and device of data transfer - Google Patents

A kind of method and device of data transfer Download PDF

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Publication number
CN107078839A
CN107078839A CN201580044051.7A CN201580044051A CN107078839A CN 107078839 A CN107078839 A CN 107078839A CN 201580044051 A CN201580044051 A CN 201580044051A CN 107078839 A CN107078839 A CN 107078839A
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tbs
default
code rate
data
data transmission
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CN107078839B (en
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吴作敏
夏媛
孙宇佳
马莎
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention discloses a kind of method and device of data transfer, is related to technical field of communication network, and can solve prior art can not be under the premise of decoding be correct, the problem of improving peak rate.The embodiment of the present invention according to default TBS forms by determining TBS, data are encoded according to the TBS of determination and modulation obtains data transmission block, effective transmission code rate during data transmission block is transmitted in first time is less than or equal to 0.961 or 0.941, then transmits data transmission block.Scheme provided in an embodiment of the present invention is suitable in data transmission procedure.

Description

A kind of method and device of data transmission Technical field
The present invention relates to the method and devices that wireless communication technology field more particularly to a kind of data transmit.
Background technique
Present LTE (Long Term Evolution, long term evolution) in system, in the R8 stage, most high-order TBS (Transport Block Size, transport block size) expense be 1 OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) symbol and four CRS (Common Reference Signal, public reference signal) port, each PRB (Physical Resource Block, Physical Resource Block) in can be used for carrying RE (the Resource Element of data, resource unit) it is 136, TBS (the Transport block size of non-most high-order, transport block size) expense be 3 OFDM symbols and two ports CRS, the RE that can be used for carrying data in each PRB is 120, since most high-order is different with time expense of TBS of high-order, so the difference between most high-order and the TBS of secondary high-order is larger.
In the R10 stage, support 4/8 CSI-RS (Channel State Information-Reference Signal, channel state information reference signals) non-MBSFN (Multicast Broadcast Single Frequency Network, multicast broadcast multimedia service single frequency network) scene under, assuming that the expense of TBS is 1 OFDM symbol and 2 ports CRS and 4/8 DMRS (Demodulation Reference Signal, demodulated reference signal) port, the RE that can be used for carrying data in each PRB is 120, therefore when to DMRS transmission mode tune When spending most high-order TBS, transmission block code rate can be made to be greater than 1, cause information transmission incomplete, make UE (User Equipment, user equipment) decoding error, and when dispatching secondary high-order TBS to DMRS transmission mode, it is too low to will lead to peak rate.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of data transmission, can solve the prior art cannot decoding correctly under the premise of, the problem of improving peak rate.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, the embodiment of the present invention provides a kind of method of data transmission, comprising:
Determine that TBS, the default TBS table are used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS according to Preset Transfer block size TBS table；
Coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；
Transmit the data transmission block.
In the first possible embodiment, with reference to first aspect, before the basis presets TBS table selection TBS, the method also includes:
The default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when determining transmission data, wherein, the modulation system is 256QAM or 64QAM, the value of the maximum transmitted code rate is 0.961 or 0.941, and the default expense of the PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；
According to the modulation system, the maximum transmitted code rate and the default expense, the default TBS table is determined, transmission code rate of the TBS in the default expense of the PRB in the default TBS table is no more than the maximum transmitted code rate.
In second of possible embodiment, the first possible embodiment in reference to first aspect, when the modulation system is 64 quadrature amplitude modulation QAM, and the value of the maximum transmitted code rate be 0.961 when, TBS number Y1 is included at least in the default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y2 in the default TBS table, and when it is Y2 that the TBS, which is numbered, when being 0.961, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In the third possible embodiment, the first possible embodiment in reference to first aspect, when the modulation system is 64QAM, and the value of the maximum transmitted code rate be 0.941 when, TBS number Y3 is included at least in the default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y4 in the default TBS table, and when it is Y1 that the TBS, which is numbered, when being 0.941, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In the 4th kind of possible embodiment, any of the above-described kind of possible embodiment with reference to first aspect or in first aspect, which is characterized in that described coding to be carried out to data according to determining TBS and modulation obtains data transmission block, comprising:
Data are encoded according to determining TBS, the process of the coding includes code interleaving and rate-matched, wherein the initial bits that interleaver exports during the code interleaving are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0.
Data after coding are modulated to obtain data transmission block.
Second aspect, the embodiment of the present invention provide a kind of device of data transmission, comprising:
Determination unit, for determining that TBS, the default TBS table are used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS according to Preset Transfer block size TBS table；
Coded modulation unit, for carrying out coding to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；
Transmission unit is used for transmission the data transmission block.
In the first possible embodiment, in conjunction with second aspect, the determination unit, the default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when being also used to determine transmission data, wherein, the modulation system is that the value of the 256QAM perhaps 64QAM maximum transmitted code rate is 0.961 or 0.941, and the default expense of the PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；According to the modulation system, the maximum transmitted code rate and the default expense, the default TBS table is determined, transmission code rate of the TBS in the default expense of the PRB in the default TBS table is no more than the maximum transmitted code rate.
In second of possible embodiment, in conjunction with the first possible embodiment in second aspect, when the modulation system is 64 quadrature amplitude modulation QAM, and the value of the maximum transmitted code rate be 0.961 when, TBS number Y1 is included at least in the default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y2 in the default TBS table, and when it is Y2 that the TBS, which is numbered, when being 0.961, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In the third possible embodiment, in conjunction with the first possible embodiment in second aspect, when the modulation system is 64QAM, and the value of the maximum transmitted code rate be 0.941 when, TBS number Y3 is included at least in the default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y4 in the default TBS table, and when it is Y1 that the TBS, which is numbered, when being 0.941, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In the 4th kind of possible embodiment, in conjunction with any of the above-described kind of possible embodiment in second aspect or second aspect, the coded modulation unit, it is also used to encode data according to determining TBS, the process of the coding includes code interleaving and rate-matched, wherein, the initial bits that interleaver exports during the code interleaving are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0；Data after coding are modulated to obtain data transmission block.
The third aspect, the embodiment of the present invention provide a kind of device of data transmission, comprising:
Processor, it is coupled with the memory, for controlling the execution of described program instruction, specifically for determining that TBS, the default TBS table are used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS according to Preset Transfer block size TBS table；Coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；
Memory, for storing the information for including program instruction and the default TBS table；
Transceiver is used for transmission the data transmission block.
In the first possible embodiment, in conjunction with the third aspect, the processor, the default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when being also used to determine transmission data, wherein, the modulation system is that the value of the 256QAM perhaps 64QAM maximum transmitted code rate is 0.961 or 0.941, and the default expense of the PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；According to the modulation system, the maximum transmitted code rate and the default expense, the default TBS table is determined, transmission code rate of the TBS in the default expense of the PRB in the default TBS table is no more than the maximum transmitted code rate.
In second of possible embodiment, in conjunction with the first possible embodiment in the third aspect, when the modulation system is 64 quadrature amplitude modulation QAM, and the value of the maximum transmitted code rate be 0.961 when, TBS number Y1 is included at least in the default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y2 in the default TBS table, and when it is Y2 that the TBS, which is numbered, when being 0.961, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In the third possible embodiment, in conjunction with the first possible embodiment in the third aspect, when the modulation system is 64QAM, and the value of the maximum transmitted code rate be 0.941 when, TBS number Y3 is included at least in the default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y4 in the default TBS table, and when it is Y1 that the TBS, which is numbered, when being 0.941, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In the 4th kind of possible embodiment, in conjunction with any of the above-described kind of possible embodiment in the third aspect or the third aspect, the processor, it is also used to encode data according to determining TBS, the process of the coding includes code interleaving and rate-matched, wherein, the initial bits that interleaver exports during the code interleaving are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0；Data after coding are modulated to obtain data transmission block.
The method and device of data transmission provided in an embodiment of the present invention, TBS is selected according to default TBS table, coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；Then the data transmission block is transmitted, with in the prior art when calling most high-order and secondary high-order TBS, it cannot be under the premise of decoding be correct, peak rate is improved to compare, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941 in the embodiment of the present invention, higher than maximum transmitted code rate 0.931 in the prior art, so improving peak rate, and effective transmission code rate is lower than 0.992, it is not in that information transmitting is not complete, UE will not decoding error, so the embodiment of the present invention can be under the premise of UE be decoded correctly, improve peak rate.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the drawings to be used in the description of the embodiments or prior art will be briefly described below, it should be apparent that, Drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the logical construction schematic diagram of LTE system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the method for data transmission provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the method for another data transmission provided in an embodiment of the present invention；
Fig. 4 is a kind of logical construction schematic diagram of the device of data transmission provided in an embodiment of the present invention；
Fig. 5 is the logical construction schematic diagram of base station in the method for data provided in an embodiment of the present invention transmission.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.
The embodiment of the present invention is applied in LTE system, as shown in Figure 1, LTE system includes at least base station 101 and at least two UE, the two UE are respectively UE102 and UE103, wherein, base station 101, UE102 and UE103 are the transmission device that can identify and support TBS provided in an embodiment of the present invention, and base station 101 can be used TBS provided in an embodiment of the present invention and be communicated respectively with UE102 and UE103.
In order to improve the peak rate of transmission of data blocks, the embodiment of the invention provides a kind of methods of data transmission, as shown in Fig. 2, this method comprises:
201, TBS is determined according to default TBS table, default TBS table is used to indicate the corresponding relationship between TBS number, PRB quantity and TBS.
202, coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941.
Although current agreement provides not decoding 0.931 or more code word, but during actual test, when transmission rate is 0.961, it can also decode correct, so when determining default TBS table, the value of maximum transmitted code rate can be determined as 0.961, when maximum transmitted code rate is 0.961, UE is set as not decoding the transmission block that first biography code rate is more than 0.961.
Furthermore, the mapping mode of RV version 0 is mapped since the third column of systematic bits in interleaver, so available to 30 column systematic bits, unmapped two column systematic bits are replaced by 4 column check bits, so theoretic maximal rate is 32/34=0.941, so in the embodiment of the present invention when determining default TBS table, the value of maximum transmitted code rate can also be determined as 0.941, when maximum transmitted code rate is 0.941, UE is set as not decoding the transmission block that first biography code rate is more than 0.941.
It can be understood that, if it is determined that when TBS table, based on maximum transmitted code rate be 0.961, then effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961, if it is determined that when TBS table, based on maximum transmitted code rate be 0.941, then data transmission block first time transmission in effective transmission code rate be less than or equal to 0.941.
203, data transmission block is transmitted.
It should be noted that step 201 is executed to step 202 by the base station in system shown in Figure 1, after base station sends data to UE according to the TBS of selection, since maximum transmitted code rate is lower than 0.992, so UE can be decoded correctly.
The method of data transmission provided in an embodiment of the present invention, TBS is selected according to default TBS table, coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；Then the data transmission block is transmitted, with in the prior art when calling most high-order and secondary high-order TBS, it cannot be under the premise of decoding be correct, peak rate is improved to compare, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941 in the embodiment of the present invention, higher than maximum transmitted code rate 0.931 in the prior art, so improving peak rate, and effective transmission code rate is lower than 0.992, it is not in that information transmitting is not complete, UE will not decoding error, so the embodiment of the present invention can be under the premise of UE be decoded correctly, improve peak rate.
Before realizing data transmission method shown in Fig. 2, it needs to be determined that default TBS table, so in another implementation provided in an embodiment of the present invention, as shown in Figure 3, before above-mentioned steps 201, the default TBS table of basis determine TBS, also need to execute step 301 and 302.
301, the default expense of modulation system, maximum transmitted code rate and PRB that need to be used when determining transmission data, wherein modulation system be that the value of 256QAM perhaps 64QAM maximum transmitted code rate is 0.961 or 0.941.
Wherein, the default expense of PRB is that can be used for carrying the resource unit RE quantity of data in each PRB, in the case where supporting the scene of non-MBSFN of 4/8CSI-RS, a part of RE in each PRB need to distribute to the DMRS port use of 1 OFDM symbol and two ports CRS and 4/8, and residue 120 can be used for carrying the RE resource of data in each PRB.
It should be noted that be the data transmitted in the embodiment of the present invention can be PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) carrying data or PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) carrying data.
302, according to modulation system, maximum transmitted code rate and default expense, default TBS table is determined.
Wherein, transmission code rate of the TBS in the default expense of PRB preset in TBS table is no more than maximum transmitted code rate.
During determining TBS table, the spectrum efficiency of each resource units RE, spectrum efficiency=order of modulation * maximum transmitted code rate of each RE are determined according to order of modulation and maximum transmitted code rate first.
Then it according to the resource unit RE quantity and PRB number that can be used for carrying data in each PRB, determines for total available RE number, RE number * PRB number can be used in total available RE number=each PRB.
Then the bit size that can be transmitted under above-mentioned hypothesis is calculated, it can the available RE number of transmitted bit=each RE spectrum efficiency * always.
Finally in predefined TBS candidate collection, select it is above-mentioned can the immediate TBS of transmitted bit, as the TBS under the hypothesis.Optionally, the TBS candidate collection includes for existing TBS table In TBS table when a code word is mapped to four layers in TBS table and/or existing TBS table when a code word is mapped to three layers in TBS table and/or existing TBS table when a code word is mapped to two layers in TBS table and/or existing TBS table of the code word when being mapped to single layer.
It when modulation system is 64QAM, and the value of maximum transmitted code rate is 0.961, presets and includes at least TBS number Y1 in TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity.Default TBS table is as shown in table 1, and TBS in existing default TBS table is omitted in table 1 and numbers corresponding TBS value.Wherein, Y1 can be 26A.
Table 1
It when modulation system is 256QAM, and the value of maximum transmitted code rate is 0.961, presets and includes at least TBS number Y2 in TBS table, and when TBS number is Y2, the corresponding TBS of at least one PRB quantity.Default TBS table is as shown in table 2, and TBS in existing default TBS table is omitted in table 2 and numbers corresponding TBS value.Wherein, Y2 can be 33A.
Table 2
It when modulation system is 64QAM, and the value of maximum transmitted code rate is 0.941, presets and includes at least TBS number Y3 in TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity.Default TBS table is as shown in table 3, and TBS in existing default TBS table is omitted in table 3 and numbers corresponding TBS value.Wherein, Y3 can be 26A.
Table 3
It when modulation system is 256QAM, and the value of maximum transmitted code rate is 0.941, presets and includes at least TBS number Y4 in TBS table, and when TBS number is Y4, the corresponding TBS of at least one PRB quantity.Default TBS table is as shown in table 4, and TBS in existing default TBS table is omitted in table 4 and numbers corresponding TBS value.Wherein, Y4 can be 33A.
Table 4
It is worth noting that, above-mentioned table 1 is all illustrated into table 4 when TBS number is Y1, the corresponding TBS of each PRB quantity in from 1 to 110, but the embodiment of the present invention is not restricted to have in default TBS table to include the corresponding TBS of each PRB quantity in from 1 to 110 It is also possible to only include the corresponding TBS of part PRB quantity.
It should be noted that, when carrying out the transmission of first time data using default TBS table, the mapping mode of existing RV0 be since in interleaver systematic bits third column in bit map, finally obtained systematic bits information includes 30 column systematic bits and 4 column check bits, in the case where maximum transmitted code rate is lower than 0.931, two column systematic bits are sent out less according to existing, the decoding performance of the mapping mode of multiple two column check bit, it is more preferable than the decoding performance according to the mapping mode mapped since the bit in interleaver in first row, however, the embodiment of the present invention need to improve maximum transmitted code rate, under high-transmission code rate, existing mapping mode can be such that more system information loses, UE is caused decoding error occur, so in order to realize under the premise of decoding is correct, improve maximum transmitted code rate, ? In another kind implementation provided in an embodiment of the present invention when being carried out data transmission using default TBS table, data are encoded according to determining TBS, can specifically include code interleaving and rate-matched, wherein the initial bits of interleaver output are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0.
In another implementation provided in an embodiment of the present invention, when being carried out data transmission using default TBS table, data are encoded according to determining TBS, can specifically include code interleaving and rate-matched, wherein the initial bits of interleaver output are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue be 0 when, the value of X and the transmission code rate of code block are related.For example, the value of X is 1 when transmission code rate is 0.96 or so；When transmission code rate is 0.93 or so, the value of X is 2；When transmission code rate is 0.90 or so, the value of X is 3；When transmission code rate is 0.88 or so, the value of X is 4；When transmission code rate is 0.85 or so, the value of X is 5；When transmission code rate is 0.83 or so, the value of X is 6.It should be noted that the value of X is not limited to numerical value in the example above, it can be integer or decimal that X, which is the number more than or equal to 0,.It is this according to transmission code rate adaptively determine interleaver export The mode of beginning bit position can retain more system information in high code rate, the more check information of reservations more as far as possible in the case where system information can be retained, to keep the data block decoding performance under different transmission code rates optimal.
After encoding data according to determining TBS, also need that the data after coding are modulated to obtain data transmission block.
When the value of X is 0, K0For a systematic bits in the first row of systematic bits in interleaver, when the value of X is 1, K0For a systematic bits in the secondary series of systematic bits in interleaver, that is, when the value of X is A, K0For a systematic bits in (A+1) column of systematic bits in interleaver.
It should be noted that the embodiment of the present invention is not limited to have to the K from interleaver0Bit starts to map, but it can be mapped since any one systematic bits in the first row or secondary series of systematic bits in interleaver, compared with being mapped since the bit in the third of systematic bits column in the prior art, it is possible to reduce the loss of system information improves decoding success rate.
It is worth noting that, carry out data transmission when using TBS table in the prior art, or when being transmitted using default TBS table progress first time data provided in an embodiment of the present invention, the mapping mode that RV0 can be modified can make UE be improved the decoding performance of transmission block that transmission code rate is more than 0.931 after modification.
When the default TBS table that the embodiment of the present invention generates is applied in the system shown in figure 1, concrete implementation mode are as follows:
The capability indication information of the new TBS of the support that base station reception UE is sent, it then is MCS table of the UE configuration comprising new TBS according to the capability indication information, when needing to transmit data, base station receives the CQI that UE is sent, determine the corresponding modulation system of the CQI and spectrum efficiency, then the TBS transmitted to UE is estimated according to the first PBR number and spectrum efficiency, further according to the TBS estimated, it is searched from default TBS table and estimates immediate first TBS of TBS with this, and the first PBR quantity corresponding TBS number, then the TBS can be found from MCS table according to TBS number and numbers corresponding MCS number.
When transmitting data, the first TBS, MCS number, PRB number and TBS number are informed into UE, in order to which UE decodes the transmission block received, the size of transmission block is the first TBS.
Wherein, the first PRB quantity is the PRB quantity that base station is UE distribution；Alternatively, the first PRB number is to be less than or equal to base station for one to distribute to the numerical value of PRB quantity of UE and being multiplied for particular factor, the numerical value obtained is then rounded to gained product.
Base station be UE configuration the MCS table comprising new TBS as shown in table 5 and table 6, corresponding to above-mentioned table 1 to table 4, the M in table 5 is the Y3 in Y1 or table 3 in table 1, and the specific value of M can be 26A, N in table 6 can be the Y4 in the Y2 or table 4 in table 2, and the specific value of N can be 33A.
Table 5
Table 6
The method of data transmission provided in an embodiment of the present invention, TBS is determined according to default TBS table, coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；Then the data transmission block is transmitted, and when calling most high-order and secondary high-order TBS, cannot decoded in the prior art Under the premise of correctly, peak rate is improved to compare, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941 in the embodiment of the present invention, higher than maximum transmitted code rate 0.931 in the prior art, so improving peak rate, and effective transmission code rate is lower than 0.992, it is not in that information transmitting is not complete, UE will not decoding error, so the embodiment of the present invention can UE decode correctly under the premise of, improve peak rate.
In conjunction with above method process, in order to improve peak rate under the premise of UE decoding is correct, the embodiment of the invention provides a kind of device of data transmission, which is applied in base station, as shown in Figure 4, the device comprises determining that unit 401, coded modulation unit 402, transmission unit 403.
Determination unit 401, for determining TBS according to Preset Transfer block size TBS table, default TBS table is used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS；
Coded modulation unit 402, for carrying out coding to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；
Transmission unit 403, is used for transmission data transmission block.
In an alternative embodiment of the invention, determination unit 401, the default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when being also used to determine transmission data, wherein, modulation system is 256QAM or 64QAM, the value of maximum transmitted code rate is 0.961 or 0.941, and the default expense of PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；According to modulation system, maximum transmitted code rate and default expense, default TBS table is determined, preset transmission code rate of the TBS in TBS table in the default expense of PRB and be no more than maximum transmitted code rate.
In an alternative embodiment of the invention, when modulation system is 64 quadrature amplitude modulation QAM, and the value of maximum transmitted code rate is 0.961, TBS number Y1 is included at least in default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity presets TBS table are as follows:
And/or
It when modulation system is 256QAM, and the value of maximum transmitted code rate is 0.961, presets and includes at least TBS number Y2 in TBS table, and when TBS number is Y2, the corresponding TBS of at least one PRB quantity presets TBS table are as follows:
In an alternative embodiment of the invention, when modulation system is 64QAM, and the value of maximum transmitted code rate is 0.941, TBS number Y3 is included at least in default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity presets TBS table are as follows:
And/or
It when modulation system is 256QAM, and the value of maximum transmitted code rate is 0.941, presets and includes at least TBS number Y4 in TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity presets TBS table are as follows:
In an alternative embodiment of the invention, coded modulation unit 402 are also used to encode data according to determining TBS, and the process of coding includes code interleaving and rate-matched, wherein the initial bits that interleaver exports during code interleaving are kth0Bit, For total line number of interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0；To the number after coding According to being modulated to obtain data transmission block.
The device of data transmission provided in an embodiment of the present invention, determination unit determines TBS according to default TBS table, coded modulation unit carries out coding to data according to determining TBS and modulation obtains data transmission block, and effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；Then transmission unit transmits the data transmission block, with in the prior art when calling most high-order and secondary high-order TBS, it cannot be under the premise of decoding be correct, peak rate is improved to compare, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941 in the embodiment of the present invention, higher than maximum transmitted code rate 0.931 in the prior art, so improving peak rate, and effective transmission code rate is lower than 0.992, it is not in that information transmitting is not complete, UE will not decoding error, so the embodiment of the present invention can be under the premise of UE be decoded correctly, improve peak rate.
The embodiment of the present invention also provides a kind of pilot tone assigned unit, as shown in figure 5, Fig. 5 is the hardware structural diagram of the base station of Fig. 4 description.Wherein, which may include memory 501, transceiver 502, processor 503 and bus 504, wherein memory 501, transceiver 502, processor 503 are communicated to connect by bus 504.
Memory 501 can be read-only memory (Read Only Memory, ROM), static storage device, dynamic memory or random access memory (Random Access Memory, RAM).Memory 501 can store an operating system and other applications.When by software or firmware to realize technical solution provided in an embodiment of the present invention, it is stored in memory 501 for realizing the program code of technical solution provided in an embodiment of the present invention, and executed by processor 503.
Transceiver 502 is for device and other equipment or communication network (such as, but not limited to Ethernet, wireless access network (Radio Access Network, RAN), WLAN (Wireless Local Area Network, WLAN) etc.) between communication.
Processor 503 can use general central processing unit (Central Processing Unit, CPU), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, for executing relative program, to realize technical solution provided by the embodiment of the present invention.
Bus 504 may include an access, transmit information between device all parts (such as memory 501, transceiver 502 and processor 503).
It should be noted that, although hardware shown in Fig. 8 illustrate only memory 501, transceiver 502 and processor 503 and bus 504, but during specific implementation, it should be apparent to a person skilled in the art that the base station also includes to realize to operate normally other necessary devices.Meanwhile according to specific needs, it should be apparent to a person skilled in the art that also may include the hardware device for realizing other function.
Specifically, when base station shown in fig. 5 is for realizing device shown in 4 embodiments, processor 503 in the device, it is coupled with memory 501 and transceiver 502, for controlling the execution of program instruction, specifically for determining that TBS, the default TBS table are used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS according to default TBS table；Coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；
Memory 501, for storing the information for including program instruction and the default TBS table；
Transceiver 502 is used for transmission the data transmission block.
In an alternative embodiment of the invention, the processor 503, the default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when being also used to determine transmission data, wherein, the modulation system is 256QAM or 64QAM, the value of the maximum transmitted code rate is 0.961 or 0.941, and the default expense of the PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；According to the modulation system, the maximum transmitted code rate and the default expense, the default TBS table is determined, transmission code rate of the TBS in the default expense of the PRB in the default TBS table is no more than the maximum transmitted code rate.
In an alternative embodiment of the invention, when the modulation system is 64 quadrature amplitude modulation QAM, and the value of the maximum transmitted code rate be 0.961 when, TBS number Y1 is included at least in the default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y2 in the default TBS table, and when it is Y2 that the TBS, which is numbered, when being 0.961, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In an alternative embodiment of the invention, when the modulation system is 64QAM, and the value of the maximum transmitted code rate be 0.941 when, TBS number Y3 is included at least in the default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
And/or
When the modulation system is 256QAM, and the value of the maximum transmitted code rate includes at least TBS number Y4 in the default TBS table, and when it is Y1 that the TBS, which is numbered, when being 0.941, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
In an alternative embodiment of the invention, the processor 503 is also used to encode data according to determining TBS, and the process of the coding includes code interleaving and rate-matched, wherein the initial bits that interleaver exports during the code interleaving are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue be 0 when, X's takes Value is 1 or 0；Data after coding are modulated to obtain data transmission block.
The device of data transmission provided in an embodiment of the present invention, processor determines TBS according to default TBS table, coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；Then transceiver transmits the data transmission block, with in the prior art when calling most high-order and secondary high-order TBS, it cannot be under the premise of decoding be correct, peak rate is improved to compare, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941 in the embodiment of the present invention, higher than maximum transmitted code rate 0.931 in the prior art, so improving peak rate, and effective transmission code rate is lower than 0.992, it is not in that information transmitting is not complete, UE will not decoding error, so the embodiment of the present invention can be under the premise of UE be decoded correctly, improve peak rate.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can add the mode of required common hardware to realize by software, naturally it is also possible to which by hardware, but in many cases, the former is more preferably embodiment.Based on this understanding, substantially the part that contributes to existing technology can be embodied in the form of software products technical solution of the present invention in other words, the computer software product stores in a readable storage medium, such as the floppy disk of computer, hard disk or CD etc., it is used including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) executes method described in each embodiment of the present invention.
It is described above; only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and anyone skilled in the art is in the technical scope disclosed by the present invention; it can easily think of the change or the replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (15)

  1. A kind of method of data transmission characterized by comprising
    Determine that TBS, the default TBS table are used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS according to Preset Transfer block size TBS table；
    Coding is carried out to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；
    Transmit the data transmission block.
  2. The method of data transmission according to claim 1, which is characterized in that before the basis presets TBS table selection TBS, the method also includes:
    The default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when determining transmission data, wherein, the modulation system is 256QAM or 64QAM, the value of the maximum transmitted code rate is 0.961 or 0.941, and the default expense of the PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；
    According to the modulation system, the maximum transmitted code rate and the default expense, the default TBS table is determined, transmission code rate of the TBS in the default expense of the PRB in the default TBS table is no more than the maximum transmitted code rate.
  3. The method of data transmission according to claim 2, it is characterized in that, when the modulation system is 64 quadrature amplitude modulation QAM, and the value of the maximum transmitted code rate be 0.961 when, TBS number Y1 is included at least in the default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
    And/or
    When the modulation system is 256QAM, and the value of the maximum transmitted code rate is 0.961, TBS number Y2 is included at least in the default TBS table, and when it is Y2 that the TBS, which is numbered, the corresponding TBS of at least one PRB quantity, the default TBS table is.
  4. The method of data transmission according to claim 2, it is characterized in that, when the modulation system is 64QAM, and the value of the maximum transmitted code rate be 0.941 when, TBS number Y3 is included at least in the default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
    And/or
    When the modulation system is 256QAM, and the value of the maximum transmitted code rate is 0.941, TBS number Y4 is included at least in the default TBS table, and when it is Y1 that the TBS, which is numbered, the corresponding TBS of at least one PRB quantity, the default TBS table is.
  5. The method of data according to any one of claim 1 to 4 transmission, which is characterized in that described coding to be carried out to data according to determining TBS and modulation obtains data transmission block, comprising:
    Data are encoded according to determining TBS, the process of the coding includes code interleaving and rate-matched, wherein the initial bits that interleaver exports during the code interleaving are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0；
    Data after coding are modulated to obtain data transmission block.
  6. A kind of device of data transmission characterized by comprising
    Determination unit, for determining that TBS, the default TBS table are used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS according to Preset Transfer block size TBS table；
    Coded modulation unit, for carrying out coding to data according to determining TBS and modulation obtains data transmission block, effective transmission code rate of the data transmission block in first time transmission is less than or equal to 0.961 or 0.941；
    Transmission unit is used for transmission the data transmission block.
  7. The device of data transmission according to claim 6, which is characterized in that
    The determination unit, the default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when being also used to determine transmission data, wherein, the modulation system is 256QAM or 64QAM, the value of the maximum transmitted code rate is 0.961 or 0.941, and the default expense of the PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；According to the modulation system, the maximum transmitted code rate and the default expense, the default TBS table is determined, transmission code rate of the TBS in the default expense of the PRB in the default TBS table is no more than the maximum transmitted code rate.
  8. The device of data transmission according to claim 7, it is characterized in that, when the modulation system is 64 quadrature amplitude modulation QAM, and the value of the maximum transmitted code rate be 0.961 when, TBS number Y1 is included at least in the default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
    And/or
    When the modulation system is 256QAM, and the value of the maximum transmitted code rate is 0.961, TBS number Y2 is included at least in the default TBS table, and when it is Y2 that the TBS, which is numbered, the corresponding TBS of at least one PRB quantity, the default TBS table is.
  9. The device of data transmission according to claim 7, it is characterized in that, when the modulation system is 64QAM, and the value of the maximum transmitted code rate be 0.941 when, TBS number Y3 is included at least in the default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
    And/or
    When the modulation system is 256QAM, and the value of the maximum transmitted code rate is 0.941, TBS number Y4 is included at least in the default TBS table, and when it is Y1 that the TBS, which is numbered, the corresponding TBS of at least one PRB quantity, the default TBS table is.
  10. The device of data transmission according to any one of claims 6 to 9, which is characterized in that
    The coded modulation unit is also used to encode data according to determining TBS, and the process of the coding includes code interleaving and rate-matched, wherein the initial bits that interleaver exports during the code interleaving are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0；Data after coding are modulated to obtain data transmission block.
  11. A kind of device of data transmission characterized by comprising
    Processor, it is coupled with the memory, for controlling the execution of described program instruction, specifically for determining that TBS, the default TBS table are used to indicate the corresponding relationship between TBS number, Physical Resource Block PRB quantity and TBS according to Preset Transfer block size TBS table；Coding is carried out to data according to determining TBS and modulation obtains data transmission block, the data transmission block is passed in first time Effective transmission code rate in defeated is less than or equal to 0.961 or 0.941；
    Memory, for storing the information for including program instruction and the default TBS table；
    Transceiver is used for transmission the data transmission block.
  12. The device of data transmission according to claim 11, it is characterized in that, the processor, the default expense of the modulation system and maximum transmitted code rate and PRB that need to be used when being also used to determine transmission data, wherein, the modulation system is that the value of the 256QAM perhaps 64QAM maximum transmitted code rate is 0.961 or 0.941, and the default expense of the PRB is that can be used for carrying the resource unit RE quantity of data in each PRB；According to the modulation system, the maximum transmitted code rate and the default expense, the default TBS table is determined, transmission code rate of the TBS in the default expense of the PRB in the default TBS table is no more than the maximum transmitted code rate.
  13. The device of data transmission according to claim 12, it is characterized in that, when the modulation system is 64 quadrature amplitude modulation QAM, and the value of the maximum transmitted code rate be 0.961 when, TBS number Y1 is included at least in the default TBS table, and when TBS number is Y1, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
    And/or
    When the modulation system is 256QAM, and the value of the maximum transmitted code rate is 0.961, TBS number Y2 is included at least in the default TBS table, and when it is Y2 that the TBS, which is numbered, the corresponding TBS of at least one PRB quantity, the default TBS table is.
  14. The device of data transmission according to claim 12, it is characterized in that, when the modulation system is 64QAM, and the value of the maximum transmitted code rate be 0.941 when, TBS number Y3 is included at least in the default TBS table, and when TBS number is Y3, the corresponding TBS of at least one PRB quantity, the default TBS table are as follows:
    And/or
    When the modulation system is 256QAM, and the value of the maximum transmitted code rate is 0.941, TBS number Y4 is included at least in the default TBS table, and when it is Y1 that the TBS, which is numbered, the corresponding TBS of at least one PRB quantity, the default TBS table is.
  15. The device of the transmission of data described in any one of 1 to 14 according to claim 1, it is characterized in that, the processor, it is also used to encode data according to determining TBS, the process of the coding includes code interleaving and rate-matched, wherein, the initial bits that interleaver exports during the code interleaving are kth0Bit, For total line number of the interleaver, NcbFor the soft cache size after data encoding, rvidxFor the number of redundancy versions, work as rvidxValue when being 0, the value of X is 1 or 0；Data after coding are modulated to obtain data transmission block.
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