CN103378936A - Data transmission method and device - Google Patents
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- CN103378936A CN103378936A CN2012101322821A CN201210132282A CN103378936A CN 103378936 A CN103378936 A CN 103378936A CN 2012101322821 A CN2012101322821 A CN 2012101322821A CN 201210132282 A CN201210132282 A CN 201210132282A CN 103378936 A CN103378936 A CN 103378936A
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Abstract
The invention discloses a data transmission method and device. The data transmission method comprises the following steps that data transmitted by M TTIs are encoded into a transmission block together by a transmitting terminal, wherein M is an integer larger than 1; a preset number of redundancy versions are generated by the transmitting terminal according to data carried by one transmission block; one redundancy version of the preset number of the redundancy versions is transmitted at each TTI of the M TTIs by the transmitting terminal according to a first predetermined rule. According to the data transmission method and device, the coverage range and coding gain of data transmission are improved.
Description
Technical field
The present invention relates to the communications field, in particular to data transmission method and device.
Background technology
Build for 3G, the effect of coverage enhancement technology is the contradiction that solves investment and the capacity of covering.Under the market competition environment of fierceness, the breadth and depth of covering need to improve in operator, will increase investment and will improve covering.As if the coverage enhancement technology has been alleviated the contradiction between wide covering and the great amount of investment to a certain extent, and it not only can be expanded the coverage area, and can also accelerate the construction speed of network, meanwhile reduces the investment of operator.
At Long Term Evolution (Long Term Evolution, referred to as LTE) in the system, descending orthogonal frequency division multiple access (the Orthogonal Frequency Division Multiplexing Access that adopted, referred to as OFDMA) technology, can significantly reduce the interference in the residential quarter, but because the networking of many employing identical frequency process, presence of intercell interference (Inter-Cell Interference is referred to as ICI) increases obviously.In order to reduce ICI, LTE also standardization a lot of technology, for example, descending inter-cell interference cancellation (Inter-Cell Interfernce Cancellation is referred to as ICIC).Descending ICIC technology is based on eNodeB Relative Narrowband TX Power (Relative Narrowband TX Power, referred to as RNTP) restriction method realize in advance prompting function of descending interference, strengthened the covering performance of physical down Traffic Channel (Physical Downlink Shared Channel is referred to as PDSCH).Up single carrier-frequency division multiple access access (the Single Carrier-Frequency Division Multiplexing Access that adopted, referred to as SC-FDMA) technology, can significantly reduce the peak-to-average force ratio of UE, improve signal quality, but because as much adopts the identical frequency process networking, presence of intercell interference ICI increases obviously.In order to reduce ICI, the up also standardization of LTE a lot of technology, for example, up ICIC technology based on HII/OI has strengthened physical uplink Traffic Channel (Physical Uplink Shared Channel is referred to as PUSCH).
Can improve the transmission performance of system although there are numerous technology in the LTE system, especially network covering property, but at present, network test and emulation are found by experiment, the PUSCH of moderate rate, the PDSCH of two-forty remain in the LTE system the limited channel of covering performance in each channel.Wherein main cause is: the limited PUSCH of moderate rate that causes is limited for the transmitted power of UE, and the ICI between the base station causes the PDSCH of two-forty limited.This covering performance to the LTE system has proposed demand, and in existing technology, does not also have to find can continue to improve the method for covering performance on the prior art basis.
Chnnel coding (Channel Coding) technology has significant contribution improving link transmission performance, so that data can be resisted the various declines of channel.In order to show the advantage of iterative code, need large coded block size.Such as, stipulate that in 3GPP the boundary size of turbo is the same with the performance of convolution code less than or equal to 300 bit the time.Only have when turbo boundary size greater than 1000 bit the time, apparent in view gain is just arranged.For PUSCH 384kbps, the transmission block size is less than 400, and therefore, just at last with turbo code coding, performance also can be under the Potential performance of turbo coding.And in the 3GPP system, chnnel coding is at a Transmission Time Interval (Transmission Time Interval, referred to as TTI) in carry out, do not changing the big or small of transmitted data rates or do not changing under the condition of instantaneous through-put power, change the transmission block size, the TTI binding is a good solution.
For the problem that coding gain is lower and coverage rate is low of data in the correlation technique, effective solution is proposed not yet at present.
Summary of the invention
Coding gain and the lower problem of coverage rate for data in the correlation technique the invention provides data transmission method and device, to address this problem at least.
According to an aspect of the present invention, provide a kind of data transmission method, having comprised: the data aggregate that transmitting terminal sends M Transmission Time Interval TTI is encoded into a transmission block, and wherein, M is the integer greater than 1; Described transmitting terminal generates a predetermined number redundancy versions according to the data that a described transmission block carries; Described transmitting terminal is a redundancy versions in the described predetermined number of each TTI transmission redundancy versions of a described M TTI according to the first pre-defined rule or the second pre-defined rule.
Preferably, described transmitting terminal comprises at the redundancy versions that each TTI of a described M TTI sends in the described predetermined number redundancy versions according to pre-defined rule:
When described predetermined number equaled M, described transmitting terminal was according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, sent redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
At described predetermined number during greater than M or less than M, send successively at each TTI of a described M TTI according to the indexed sequential of a described predetermined number redundancy versions; Or
Described transmitting terminal each TTI in a described M TTI sends identical redundancy versions, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Described transmitting terminal sends redundancy versions according to predefined rule ordering each TTI in a described M TTI.
Preferably, described transmitting terminal is according to after the redundancy versions of pre-defined rule in the described predetermined number of each TTI transmission redundancy versions of a described M TTI, and also comprise: described transmitting terminal carries out the re-transmission of a described predetermined number redundancy versions according to the second pre-defined rule.
Preferably, described transmitting terminal comprises according to the re-transmission that the second pre-defined rule carries out a described predetermined number redundancy versions:
Employing is transmitted the identical order of a described predetermined number redundancy versions with the first time and is retransmitted a described predetermined number redundancy versions; Or
The index that carries out the described predetermined number redundancy versions that retransmits for the N time is identical with the number of times of described re-transmission; Or
From the next redundancy versions of the index that transmits for the first time a described predetermined number redundancy versions, according to the numeric order of a described predetermined number redundancy versions, retransmit a described predetermined number redundancy versions.
Preferably, before described transmitting terminal is according to a redundancy versions in the described predetermined number of each a TTI transmission redundancy versions of the first pre-defined rule at a described M TTI, also comprise:
Described transmitting terminal is indicated used Resource Block RB number, RB index and/or the redundancy versions of each TTI among the described M TTI by the ascending resource information of giving in one or more down control channels.
Preferably, described transmitting terminal indicates used Resource Block RB number and/or the RB index of each TTI among the described M TTI to comprise by the ascending resource information of giving in the down control channel:
Described transmitting terminal is indicated the used RB number of each TTI among the described M TTI by the ascending resource information of giving in the down control channel that first TTI is corresponding among the described M TTI, wherein, the used RB number of each TTI is to determine according to channel condition information corresponding to described first TTI among the described M TTI, and used RB number and the RB index of each TTI is identical among the described M TTI.
Preferably, described transmitting terminal indicates used Resource Block RB number and/or the RB index of each TTI among the described M TTI to comprise by the ascending resource information of giving in M the down control channel:
Described transmitting terminal indicates a described M TTI to determine respectively used RB number and the RB index of this TTI by the ascending resource information of giving in the down control channel that each TTI is corresponding among the described M TTI, wherein, used RB number and/or the RB index of each TTI is to determine according to channel condition information corresponding to this each TTI among the described M TTI.
Preferably, the described ascending resource information of giving comprise following one of at least: dynamic dispatching is given information, is semi-staticly given information, accidental access response is given information.
Preferably, described transmitting terminal comprises according to the data generation predetermined number redundancy versions that a described transmission block carries: the data communication device that described transmitting terminal carries a described transmission block is crossed the code check coupling and is obtained female code; Described transmitting terminal generates a described predetermined number redundancy versions according to described female code.
Preferably, before the data aggregate that described transmitting terminal sends M TTI is encoded into a transmission block, also comprise: described transmitting terminal receives the signaling that the combined coding that is used to indicate coverage enhancement enables.
Preferably, the signaling that enables of the described combined coding that is used to indicate coverage enhancement is to send in physical downlink control channel PDCCH or at Physical Downlink Shared Channel PDSCH.
Preferably, described M Transmission Time Interval TTI part on time domain disperses.
Preferably, described transmitting terminal comprises one of following: base station, terminal, relay station, Home eNodeB.
According to another aspect of the invention, provide a kind of data transmission method, having comprised: the data of the upper carrying of M the TTI that the receiving terminal receiving end/sending end sends; Described receiving terminal is determined the redundancy versions that the upper one or more TTI of a described M TTI send according to the first pre-defined rule or the second pre-defined rule; Described receiving terminal is decoded described redundancy versions and is obtained the transmission block that transmitting terminal sends.
Preferably, described receiving terminal is determined the redundancy versions that the upper one or more TTI of a described M TTI send according to the first pre-defined rule or the second pre-defined rule and is comprised:
When described predetermined number equaled M, described receiving terminal was according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, determined to send redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
During greater than M or less than M, determine described redundancy versions according to the indexed sequential of a described predetermined number redundancy versions in the order that each TTI of a described M TTI sends successively at described predetermined number; Or
The upper redundancy versions that sends of each TTI that described receiving terminal is determined among the described M TTI is identical, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Described receiving terminal is determined the redundancy versions index of the upper transmission of each TTI among the described M TTI according to predefined rule.
Preferably, described receiving terminal comprises one of following: base station, terminal, relay station, Home eNodeB.
According to a further aspect in the invention, provide a kind of data transmission device, having comprised: coding module, the data aggregate that is used for M Transmission Time Interval TTI sent is encoded into a transmission block, and wherein, M is the integer greater than 1; Generation module, the data that are used for carrying according to a described transmission block generate a predetermined number redundancy versions; Sending module is for a redundancy versions that sends a described predetermined number redundancy versions according to the first pre-defined rule or the second pre-defined rule at each TTI of a described M TTI.
Preferably, described sending module one of in the following manner sends a redundancy versions in the described predetermined number redundancy versions at each TTI of a described M TTI:
When described predetermined number equaled M, described transmitting terminal was according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, sent redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
At described predetermined number during greater than M or less than M, send successively at each TTI of a described M TTI according to the indexed sequential of a described predetermined number redundancy versions; Or
Described transmitting terminal each TTI in a described M TTI sends identical redundancy versions, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Described transmitting terminal is determined the redundancy versions index of the upper transmission of each TTI among the described M TTI according to predefined rule.
Preferably, also comprise: retransmission module is used for carrying out the re-transmission of a described predetermined number redundancy versions according to the second pre-defined rule.
Preferably, described retransmission module one of in the following manner carries out carrying out according to the second pre-defined rule the re-transmission of a described predetermined number redundancy versions:
Employing is transmitted the identical order of a described predetermined number redundancy versions with the first time and is retransmitted a described predetermined number redundancy versions; Or
The index that carries out the described predetermined number redundancy versions that retransmits for the N time is identical with the number of times of described re-transmission; Or
From the next redundancy versions of the index that transmits for the first time a described predetermined number redundancy versions, according to the numeric order of a described predetermined number redundancy versions, retransmit a described predetermined number redundancy versions.
In accordance with a further aspect of the present invention, provide a kind of data transmission device, having comprised: receiver module is used for the upper data of carrying of M TTI that receiving end/sending end sends; Determination module is used for determining the redundancy versions that the upper one or more TTI of a described M TTI send according to the first pre-defined rule or the second pre-defined rule; Decoder module obtains the transmission block that transmitting terminal sends for described redundancy versions is decoded.
Preferably, described determination module is determined one of in the following manner described redundancy versions:
When described predetermined number equals M, according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, determine to send redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
During greater than M or less than M, determine described redundancy versions according to the indexed sequential of a described predetermined number redundancy versions in the order that each TTI of a described M TTI sends successively at described predetermined number; Or
The upper redundancy versions that sends of each TTI of determining among the described M TTI is identical, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Determine the redundancy versions of the upper transmission of each TTI among the described M TTI according to predefined rule.
By the present invention, adopt transmitting terminal that M TTI sent the specified data combined coding and become a transmission block, and according to the first pre-defined rule at each TTI transmission of M TTI redundancy versions by the data generation of transmission block.Realize combined coding and the binding transmission of a plurality of TTI data, solved the lower problem of the coding gain of data in the correlation technique, reached the coding gain that improves data, improved to a certain extent the effect of the covering performance of the transmission of data.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the uplink schematic diagram according to correlation technique;
Fig. 2 is the first pass figure according to the data transmission method of the embodiment of the invention;
Fig. 3 is the second flow chart according to the data transmission method of the embodiment of the invention;
Fig. 4 is the first structured flowchart according to the data transmission device of the embodiment of the invention;
Fig. 5 is preferred the first structured flowchart according to the data transmission device of the embodiment of the invention;
Fig. 6 is the second structured flowchart according to the data transmission device of the embodiment of the invention;
Fig. 7 is uplink schematic diagram one during according to a down control channel indication of the employing of the embodiment of the invention;
Fig. 8 is uplink schematic diagram two during according to the indication of a plurality of down control channels of the employing of the embodiment of the invention;
Fig. 9 be according to the embodiment of the invention when the M=4, the first schematic diagram that passes and retransmit the redundancy encoding version number rule one of transmitting among each TTI in the combined coding transmission;
Figure 10 be according to the embodiment of the invention when the M=4, the first schematic diagram that passes and retransmit the redundancy encoding version number rule two of transmitting among each TTI in the combined coding transmission;
Figure 11 be according to the embodiment of the invention when the M=6, the first schematic diagram that passes and retransmit the redundancy encoding version number rule of transmitting among each TTI in the combined coding transmission;
Figure 12 be according to the embodiment of the invention when the M=8, the first schematic diagram that passes and retransmit the redundancy encoding version number rule of transmitting among each TTI in the combined coding transmission; And
Figure 13 be according to the embodiment of the invention when the M=4, during discontinuous binding transmission, the first schematic diagram that passes and retransmit the redundancy encoding version number rule of transmitting among each TTI in the combined coding transmission.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Present embodiment provides a kind of data transmission method, and Fig. 2 is the flow chart according to the data transmission method of the embodiment of the invention, and as shown in Figure 2, the method comprises the steps that S202 is to step S206.
Step S202: the data aggregate that transmitting terminal sends M TTI is encoded into a transmission block.
Step S204: transmitting terminal generates a predetermined number redundancy versions according to the data that this transmission block carries;
Step S206: transmitting terminal is according to the redundancy versions of the first pre-defined rule in the described predetermined number of each TTI transmission redundancy versions of this M TTI.
By above-mentioned steps, transmitting terminal sends the specified data combined coding with M TTI and becomes a transmission block, and sends the redundancy versions that the data by transmission block generate according to the first pre-defined rule at each TTI of M TTI.Realize combined coding and the binding transmission of a plurality of TTI data, overcome the lower problem of the coding gain of data in the correlation technique, improved the coding gain of data, improved to a certain extent the covering performance of the transmission of data.
When implementing, can indicate transmitting terminal according to the redundancy versions of the first pre-defined rule in the described predetermined number of each TTI transmission redundancy versions of a described M TTI by high-level signaling.For example: can be by one of following three kinds of modes:
Mode one: when predetermined number equaled M, transmitting terminal was according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, sent redundancy versions corresponding to this each TTI time slot sequence number at described each TTI.
Mode two: at predetermined number during greater than M or less than M, send successively at each TTI of M TTI according to the indexed sequential of this predetermined number redundancy versions.
Mode three: transmitting terminal each TTI in M TTI sends identical redundancy versions, and wherein, this identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions.
Method four: transmitting terminal sends redundancy versions according to predefined rule ordering each TTI in M TTI.
The implementation of mode one is fairly simple, such as, there are four redundancy versions to be respectively R0, R1, R2 and R3, M is 4, then according to mode one, transmits successively R0, R1, R2 and R3 on the 4th TTI of first TTI to the, perhaps R3, R2, R1 and R0.Redundancy versions numbering in this mode is since 0.
Mode two can realize that redundancy versions is greater than the transmission of redundancy versions in the situation of M, for example: five redundancy versions are arranged, and M is 4, then according to mode one, transmits successively R0, R1, R2 and R3 on four TTI of first TTI to the, perhaps R4, R3, R2 and R1.
Three of modes are not considered the number of redundancy versions and the magnitude relationship of M, at an identical redundancy versions of each TTI transmission.This mode can lower the complexity of configuration.
The transmission sequence of redundancy versions can be disposed by high level in the mode four, for example, has four redundancy versions to be respectively R0, R1, R2 and R3, and M is 4, then according to the high level configuration, transmits successively R0, R2, R3 and R1 on the 4th TTI of first TTI to the.When implementing, receiving terminal and transmitting terminal can be appointed the configuration of adopting in advance, to reduce the load of signalling.
In order to improve the reliability of transmission, after according to a redundancy versions in the described predetermined number of each a TTI transmission redundancy versions of pre-defined rule at M TTI, transmitting terminal can also carry out according to the second pre-defined rule the re-transmission of a predetermined number redundancy versions.
When implementing, transmitting terminal can be accomplished in several ways the re-transmission of carrying out a described predetermined number redundancy versions according to the second pre-defined rule.For example: can retransmit in the following way.
Mode one: adopt the order identical with transmitting for the first time a predetermined number redundancy versions to retransmit a predetermined number redundancy versions.
Mode two: the index that carries out the predetermined number redundancy versions that retransmits for the N time is identical with the number of times of re-transmission;
Mode three: from the next redundancy versions of the index that transmits for the first time a described predetermined number redundancy versions, according to the numeric order of a predetermined number redundancy versions, retransmit a described predetermined number redundancy versions.
Mode one can adopt and transmit identical order for the first time, implements easier.Mode two can be by repeatedly retransmitting the transmission that realizes whole redundancy versions, and for example, the redundancy versions of the 2nd re-transmission is R2 (index of supposing a predetermined number redundancy versions is that wherein N is the sum of redundancy versions from 1 to N).Mode three can realize the transmission of all versions, if: the index of redundancy versions is 1 to 8, if the index of the redundancy versions of transmission is 1 to 4 for the first time, can be from the redundancy versions that index is 5 when then retransmitting, until then this redundancy versions index 8 restarts transmission from 1 of this redundancy versions index, until finish the re-transmission of all number of times.
In order to improve the accuracy of transmission, before step S206, transmitting terminal can also be by used Resource Block RB number, RB index and/or the redundancy versions of each TTI among M TTI of one or more down control channel indications.More excellent, when adopting a down control channel indication, can determine the RB quantity and/or the RB index that distribute among each TTI according to channel condition information corresponding to first TTI among M the TTI, for example: each TTI distributes among M TTI RB number and/or RB index are identical, thereby can determine total RB number that M TTI transmits.More excellent, when adopting a plurality of down control channels indication, can determine the RB quantity of distributing among each TTI according to channel condition information corresponding to each TTI among M the TTI, indicate by M the Physical Downlink Control Channel that each TTI among this M TTI is corresponding.For example: transmitting terminal is given the used RB number of each TTI among M TTI of information indication and/or the location index of RB by ascending resource in the down control channel that first TTI is corresponding among M the TTI, wherein, the used RB number of each TTI and/or the index information of RB can be determined according to channel condition information corresponding to first TTI among M TTI, and the position of the used RB number of each TTI and RB is identical among M TTI.Again for example: transmitting terminal is given M TTI of information the indication respectively used RB number of definite this TTI and the index information of RB by ascending resource in the down control channel that each TTI is corresponding among M the TTI, wherein, the used RB number of each TTI and the index of RB are to determine regulation according to channel condition information corresponding to each TTI among M TTI, and the RB number that adopts of each TTI and the position of RB can be not identical.
Preferably, the ascending resource information of giving comprise following one of at least: dynamic dispatching is given information, is semi-staticly given information, accidental access response is given information.Send the flexibility that can raising information sends according to the much information in this preferred implementation.In addition, give priority can also for above-mentioned information, receiving in the situation of much information, can process according to priority, can improve the efficient of information processing.
In order to improve the efficient of coding, step S204 can generate a predetermined number redundancy versions in the following manner: the data communication device that transmitting terminal carries a described transmission block is crossed the code check coupling and is obtained female code; Transmitting terminal generates a described predetermined number redundancy versions according to female code.
For the data transfer mode of compatible existing system, before step S202, transmitting terminal receives the signaling that the combined coding that is used to indicate coverage enhancement enables.Under this signaling triggers, the data of M TTI are encoded.Preferably, this signaling can send at Physical Downlink Control Channel (PDCCH) or at Physical Downlink Shared Channel (PDSCH).
In order to improve the resource utilization of system, above-mentioned M TTI part on time domain disperses.But need to prove that in order to reduce the complexity of resource distribution, M TTI also can be all continuous on time domain.
Preferably, transmitting terminal comprises one of following: base station, terminal, relay station, Home eNodeB.By this preferred implementation, improved the practicality of data transmission method.
This enforcement also provides a kind of data transmission method, and Fig. 3 is the second flow chart according to the data transmission method of the embodiment of the invention, and as shown in Figure 3, the method comprises the steps that S302 is to step S306.
Step S302: the data of the upper carrying of M the TTI that the receiving terminal receiving end/sending end sends.
Step S304: receiving terminal is determined the redundancy versions that the upper one or more TTI of M TTI send according to the first pre-defined rule or the second pre-defined rule.
Step S306: receiving terminal is decoded the redundancy versions of determining and is obtained the transmission block that transmitting terminal sends.
Pass through above-mentioned steps, receiving terminal receives the data of the upper carrying of M TTI, and determine the upper redundancy versions that sends of the upper one or more TTI of M TTI according to the first pre-defined rule or the second pre-defined rule, then the redundancy versions of determining being decoded obtains transmitting terminal and sends the regulation transmission block.Realize combined coding and the binding transmission of a plurality of TTI data, overcome the lower problem of the coding gain of data in the correlation technique, improved the coding gain of data, improved to a certain extent the covering performance of the transmission of data.
When implementing, receiving terminal can be determined according to the first pre-defined rule or the second pre-defined rule the upper redundancy versions that sends of one or more TTI of M TTI.For example: can be by one of following four kinds of modes:
Mode one: when predetermined number equals M, described transmitting terminal is according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, determines to send redundancy versions corresponding to this each TTI time slot sequence number at described each TTI.
Mode two: during greater than M or less than M, determine described redundancy versions according to the indexed sequential of a described predetermined number redundancy versions in the order that each TTI of M TTI sends successively at predetermined number.
Mode three: the upper redundancy versions that sends of each TTI of determining among M the TTI is identical, and wherein, identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions.
Mode four: the redundancy versions of determining the upper transmission of each TTI among the described M TTI according to predefined rule.
Preferably, receiving terminal comprises one of following: base station, terminal, relay station, Home eNodeB.
Need to prove, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the flow chart of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
In another embodiment, also provide a kind of data transmission software, this software be used for to be carried out the technical scheme that above-described embodiment and preferred embodiment are described.
In another embodiment, also provide a kind of storage medium, stored above-mentioned data transmission software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
The embodiment of the invention also provides a kind of data transmission device, this device can be applied to transmitting terminal, this data transmission device can be used for realizing above-mentioned data transmission method and preferred implementation, carried out explanation, repeat no more, the below describes the module that relates in this data transmission device.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described system and method for following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.
Fig. 4 is the structured flowchart according to the data transmission device of the embodiment of the invention, and as shown in Figure 4, this device comprises: coding module 42, and generation module 44 and sending module 46, the below is described in detail said structure.
Coding module 42, the data aggregate that is used for M Transmission Time Interval TTI sent is encoded into a transmission block; Generation module 44 is connected to coding module 42, is used for generating a predetermined number redundancy versions according to the data that the transmission block that coding module 42 codings obtain carries; Sending module 46 is connected to generation module 44, is used for sending at each TTI of a described M TTI according to the first pre-defined rule a redundancy versions of a predetermined number redundancy versions of generation module 44 generations.
Preferably, sending module 46 one of in the following manner sends a redundancy versions in predetermined number redundancy versions at each TTI of M TTI:
Mode one: when predetermined number equaled M, transmitting terminal was according to the corresponding relation of the time slot numeric order of each TTI among the numeric order of redundancy versions and the described M TTI, sent redundancy versions corresponding to this each TTI time slot sequence number at each TTI;
Mode two: at predetermined number during greater than M or less than M, send successively at each TTI of a described M TTI according to the numeric order of a predetermined number redundancy versions;
Mode three: transmitting terminal each TTI in M TTI sends identical redundancy versions, and wherein, this identical redundancy versions is the default redundancy versions in the predetermined number redundancy versions.
Fig. 5 is the preferred structured flowchart according to the data transmission device of the embodiment of the invention, and this device also comprises: retransmission module 52, the below is described in detail said structure.
Retransmission module 52 is used for carrying out the re-transmission of a described predetermined number redundancy versions according to the second pre-defined rule.
Preferably, retransmission module 52 one of in the following manner carries out carrying out according to the second pre-defined rule the re-transmission of a described predetermined number redundancy versions:
Mode one: employing is transmitted the identical order of a predetermined number redundancy versions with the first time and is retransmitted a described predetermined number redundancy versions.
Mode two: the index that carries out the predetermined number redundancy versions that retransmits for the N time is identical with the number of times of described re-transmission.
Mode three: from the redundancy versions of the Next Sequence of the index that transmits for the first time a predetermined number redundancy versions, according to the numeric order of a predetermined number redundancy versions, retransmit a described predetermined number redundancy versions.
Preferably, transmitting terminal comprises one of following: base station, terminal, relay station, Home eNodeB.
In another embodiment, also provide a kind of data transmission software, this software be used for to be carried out the technical scheme that above-described embodiment and preferred embodiment are described.
In another embodiment, also provide a kind of storage medium, stored above-mentioned data transmission software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
The embodiment of the invention also provides a kind of data transmission device, this device can be applied to receiving terminal, this data transmission device can be used for realizing above-mentioned data transmission method and preferred implementation, carried out explanation, repeat no more, the below describes the module that relates in this data transmission device.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described system and method for following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.
Fig. 6 is the second structured flowchart according to the data transmission device of the embodiment of the invention, and as shown in Figure 6, this device comprises: receiver module 62, and determination module 64, decoder module 66, the below is described in detail said structure.
Receiver module 62 is used for the upper data of carrying of M TTI that receiving end/sending end sends; Determination module 64 is connected to receiver module 62, is used for determining according to the first pre-defined rule the redundancy versions of the upper one or more TTI transmissions of M TTI that receiver module 62 receives; Decoder module 66 is connected to determination module 64, and decoding for the redundancy versions that determination module 64 is determined obtains the transmission block that transmitting terminal sends.
Preferably, determination module 64 is determined one of in the following manner described redundancy versions:
Mode one: when predetermined number equals M, according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, determine to send redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
Mode two: during greater than M or less than M, determine described redundancy versions according to the indexed sequential of a described predetermined number redundancy versions in the order that each TTI of a described M TTI sends successively at predetermined number;
Mode three: the upper redundancy versions that sends of each TTI of determining among the described M TTI is identical, and wherein, identical redundancy versions is the default redundancy versions in the predetermined number redundancy versions.
Method four: the redundancy versions of determining the upper transmission of each TTI among the described M TTI according to predefined rule.
Preferably, receiving terminal comprises one of following: base station, terminal, relay station, Home eNodeB.
Describe below in conjunction with preferred embodiment, following preferred embodiment combines above-described embodiment and preferred implementation.
Preferred embodiment one
Present embodiment provides a kind of transmission rule of the coverage enhancement coding that is applicable to moderate rate transmission and the method for sending and receiving of indication signaling.
The method of present embodiment comprises the steps S402 and step S404.
Step S402: transmitting terminal at control channel to the receiving terminal information that sends control signaling, whether the combined coding of indication coverage enhancement enables, if it is true that the combined coding of coverage enhancement enables parameter configuration, transmitting terminal carries out combined coding with the data that M TTI carries, wherein, M is the integer greater than 1.
Step S404: transmitting terminal sends data behind the described combined coding to receiving terminal.
Preferably, in the present embodiment, the combined coding of this coverage enhancement enables parameter and is disposed by high level, sends at the PDSCH channel, perhaps sends in PDCCH.
Preferably, the data that transmitting terminal among the step S402 carries M Transmission Time Interval TTI are carried out combined coding and comprised: transmitting terminal is L1 according to the data of carrying in M the TTI (system data bit) total length, then combined coding obtains a transmission block (female code), the transmission block size is L2, L2＞L1.Generate R redundancy versions according to female code.
Preferably, transmitting terminal can also be determined the RB quantity of distributing among each TTI according to channel condition information corresponding to first TTI among the described M TTI, and wherein RB is the resource allocation unit.
For example: the RB quantity among each TTI and RB index are by a PDCCH or the indication of a plurality of PDCCH channel.
The data that transmitting terminal among the step S404 sends behind the described combined coding comprise: each TTI among M TTI sends a redundancy versions.
Preferably, the used RB number of each TTI among M TTI and/or redundancy versions are by one or more Physical Downlink Control Channel indications.
For example: when by a Physical Downlink Control Channel indication: by Physical Downlink Control Channel indication corresponding to first TTI among M the TTI; When by a plurality of Physical Downlink Control Channel indication, by each the self-corresponding M of M TTI among the described M TTI Physical Downlink Control Channel indication.
For example: when by the indication of Physical Downlink Control Channel: transmitting terminal according to a described M TTI in channel condition information corresponding to first TTI determine the RB quantity of distributing among each TTI, the RB number that each TTI distributes among M TTI is identical, thereby determines total RB number that M TTI transmits.
For example: when by a plurality of Physical Downlink Control Channel indication, transmitting terminal is determined the RB quantity of distributing among each TTI according to channel condition information corresponding to each TTI among the described M TTI, by M Physical Downlink Control Channel indication corresponding to each TTI among the described M TTI.
Preferably, when by the indication of Physical Downlink Control Channel: transmitting terminal is according to predefined rule redundancy versions of each TTI transmission in M TTI respectively.
Preferably, when by the indication of a plurality of Physical Downlink Control Channel: transmitting terminal is according to predefined rule or channel condition information redundancy versions of each TTI transmission in M TTI respectively.
Preferably, transmitting terminal is indicated at the PDCCH of redundant version number in a nearest frame that the N frame sends.
Preferably, transmitting terminal is one of following: base station, terminal, relay station, Home eNodeB.
By the preferred embodiment, can effectively bring coding gain in conjunction with combined coding and binding transmission, strengthen to a certain extent covering performance.
Preferred embodiment two
Present embodiment provides a kind of data transmission method, compares explanation in conjunction with the data transmission method of the transmission method in the correlation technique and present embodiment.
Fig. 1 is the uplink schematic diagram according to correlation technique, in Fig. 1, in order to support the transmission of up moderate rate, when for example supporting 384kbps professional, usually selects every TTI transmission, for example adopts every TTI transmission of TBS=392bits.This moment, each TTI transmitted a TB, its key character is that the data 392bits of each TTI is that absolute coding formation code check is female code of 1/3, then generate a plurality of redundancy versions according to female code, then transmit, and in the control information transmission of this TB of PDCCH indicating of the n-4 of correspondence, information such as resource location and quantity.
Fig. 7 is the uplink schematic diagram one according to the embodiment of the invention, as shown in Figure 7, same in order to support the transmission of up moderate rate, when for example supporting 384kbps professional, if adopt the combined coding that carries out among 4 TTI, the data aggregate that is about to 4 TTI is encoded into approximate 392x4=1568bits size, the supported TB of system, for example 1544bits, perhaps 1608bits.Then 1544bits or 1608bits being carried out combined coding, to form code check be female code of 1/3, then generates a plurality of redundancy versions according to female code, and a plurality of redundancy versions are transmitted in 4 TTI.
In the present embodiment, the combined coding of coverage enhancement enables parameter and is disposed by high level, sends at the PDSCH channel, perhaps sends in PDCCH.
Preferably, after the configuration combined coding enables, behind the data aggregate coding of transmitting terminal with 4 TTI, generate 4 redundancy versions, suppose that version number is respectively RV0, RV1, RV2 and RV3, then in 4 continuous TTI, transmit respectively 4 different version numbers according to the order of RV0, RV1, RV2 and RV3.
In the present embodiment, resource among these 4 TTI is distributed the control information transmission by this TB of n-4PDCCH indicating of corresponding first up TTI (for example TTI n), information such as resource location and quantity, this 4 TTI transmission takies identical resource location and identical resource quantity so, and Fig. 7 is uplink schematic diagram one during according to a down control channel indication of employing of the embodiment of the invention.Also can be according to a plurality of down control channel indications, as shown in Figure 8.
Preferably, receiving terminal carries out combined decoding after receiving the coded message of 4 different editions of whole 4 TTI, if decoding is correct, and feeding back ACK indication information then, decoding error then feeds back nack message.
In the present embodiment, when occuring to retransmit, in 4 continuous TTI, send successively RV0, RV1, RV2, the encoding block data of RV3 version.
Preferably, in 4 TTI of continuously transmission, transmit different coded data redundant version number, and the order of version transmission can be different.According to RV0, RV1, RV2, RV3 sequential delivery, also can be that concrete order is disposed as the case may be by high level elements according to other sequential delivery not necessarily.
Preferably, when occuring to retransmit, in 4 continuous TTI, send RV0, RV1, RV2, the encoding block data of four versions of RV3, transmission sequence is identical with first biography.
Such scheme by present embodiment has adopted combined coding, has improved the coding gain of receiving terminal, thereby improves system's covering performance.
Preferred embodiment three
This preferred embodiment provides a kind of data transmission method, Figure 10 be according to the embodiment of the invention when the M=4, the first schematic diagram that passes and retransmit the redundancy encoding version number rule two of transmitting among each TTI in the combined coding transmission, as shown in figure 10, when head passes, transmission RV0 version number in 4 continuous TTI; When retransmitting for the N time, transmission RVN version number in 4 continuous TTI.
In the present embodiment, when the combined coding of coverage enhancement enables parameter when being true, the combined coding redundant version number of transmission is relevant with the number of transmissions CURRENT_TX_NB, and 4 continuous identical version numbers of TTI transmission.
Preferred embodiment four
This preferred embodiment provides a kind of data transmission method, and this preferred embodiment is with the difference of preferred embodiment two: behind the data aggregate coding of transmitting terminal with 4 TTI, generate M redundancy versions, M is positive integer, and 1＜M＜9 suppose that version number is respectively RV0, RV1 ... RV (M-1); First biography and retransmission frame send the different redundancy versions of this transmission block successively, after all versions all transfer, begin then transmission from RV0, successively again transmission.
Figure 11 be according to the embodiment of the invention when the M=6, the first schematic diagram that passes and retransmit the redundancy encoding version number rule of transmitting among each TTI in the combined coding transmission, Figure 12 be according to the embodiment of the invention when the M=8, the first schematic diagram that passes and retransmit the redundancy encoding version number rule of transmitting among each TTI in the combined coding transmission firstly in the combined coding transmission in this preferred embodiment passes and retransmits the redundancy encoding version number rule transmitted among each TTI such as Figure 11 and shown in Figure 12.
When M=4, the rule of the redundant version number of transmission is identical with preferred embodiment one.
When M=8, during first the biography, binding continuously transmission 4 TTI in send successively the encoding block data of RV0, RV1, RV2, RV3 version;
When retransmitting for the first time, binding continuously transmission 4 TTI in send successively the encoding block data of RV4, RV5, RV6, RV7 version;
When retransmitting for the second time, binding continuously transmission 4 TTI in send successively the encoding block data of RV0, RV1, RV2, RV3 version;
Follow-up re-transmission is with above-mentioned regular identical.
In this preferred embodiment, when the combined coding of coverage enhancement enables parameter when being true, the combined coding redundant version number of transmission is relevant with the number of transmissions CURRENT_TX_NB, when CURRENT_TX_NB was even number, 4 TTI of transmission transmitted respectively the encoding block data of RV0, RV1, RV2, RV3 version continuously.When CURRENT_TX_NB was odd number, 4 TTI of transmission transmitted respectively the encoding block data of RV4, RV5, RV6, RV7 version continuously.
When 4＜M＜8: during first the biography, binding continuously transmission 4 TTI in send successively the encoding block data of RV0, RV1, RV2, RV3 version;
When retransmitting for the first time, binding continuously transmission 4 TTI in send successively RV4 ... RV (M-1), RV0 ... the encoding block data of RV (7-M) version.
By that analogy, each TTI is according to RV0, RV1, and RV2, RV3 ... the order of RV (M-1) is transmitted different redundancy versions successively, comprises first pass and retransmitting, and when all versions all behind the end of transmission, from the RV0 version, continues successively transmission of ordering again.
Preferred embodiment five
Present embodiment provides a kind of data transmission method, this preferred embodiment is with the difference of preferred embodiment one: 4 TTI that carry out joint transmission can not be continuous (as shown in figure 13), disposed according to actual conditions by high level, in the PDCCH of n-4 frame or the version number of PDSCH indicating n frame transmission, receiving terminal is according to the version information of indication, carry out combined decoding, when current version number is RV0, directly according to the current version information decoding, when current version number is not RV0, then carry out combined decoding in conjunction with the reception information of same process in the buffer memory before, after successfully decoded, feeding back ACK information in feedback channel empties the reception information cache of this process; After decoding unsuccessfully, in feedback channel, feed back nack message, in buffer memory, keep the reception information of this process.
Preferred embodiment six
This preferred embodiment provides a kind of data transmission method, this preferred embodiment is with the difference of preferred embodiment one: in the preferred embodiment one, resource among 4 TTI of transmission is distributed the control information transmission by this TB of n-4 PDCCH indicating of corresponding first up TTI (for example TTI n) continuously, information such as resource location and quantity that is to say that the resource location that 4 TTI transmission distribute all is identical with quantity.
In the present embodiment, the Resource Block RB index of n TTI transmission distribution and quantity are at PDCCH or the PDSCH indicating of n-4 frame, and Resource Block RB index and the quantity of the distribution that each TTI is are independently, can be different.This mode is more flexible, and when receiving terminal can't detect the resource allocation information of n-4 frame, then receiving terminal was as the criterion according to the resource allocation information that receives recently.
Preferably, the transmitting terminal in the above preferred embodiment can be the equipment such as base station, Home eNodeB, relay station, also can be communication terminal, notebook computer, Hand Personal Computer etc.Similarly, receiving terminal is used for the data-signal of receiving end/sending end, and receiving terminal can be the terminal equipments such as mobile phone, notebook computer, Hand Personal Computer, also can be the base station, the control appliances such as relay station.
Pass through above-described embodiment, data transmission method and device are provided, by transmitting terminal M TTI sent the specified data combined coding and become a transmission block, and send the redundancy versions that the data by transmission block generate according to the first pre-defined rule at each TTI of M TTI.Realize combined coding and the binding transmission of a plurality of TTI data, overcome the lower problem of the coding gain of data in the correlation technique, improved the coding gain of data, improved to a certain extent the covering performance of the transmission of data.Need to prove that these technique effects are not that above-mentioned all execution modes have, some technique effect is that some preferred implementation just can obtain.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby they can be stored in the storage device, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (22)
1. data transmission method is characterized in that comprising:
The data aggregate that transmitting terminal sends M Transmission Time Interval TTI is encoded into a transmission block, and wherein, M is the integer greater than 1;
Described transmitting terminal generates a predetermined number redundancy versions according to the data that a described transmission block carries;
Described transmitting terminal is according to the redundancy versions of the first pre-defined rule in the described predetermined number of each TTI transmission redundancy versions of a described M TTI.
2. method according to claim 1 is characterized in that, described transmitting terminal comprises at the redundancy versions that each TTI of a described M TTI sends in the described predetermined number redundancy versions according to pre-defined rule:
When described predetermined number equaled M, described transmitting terminal was according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, sent redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
At described predetermined number during greater than M or less than M, send successively at each TTI of a described M TTI according to the indexed sequential of a described predetermined number redundancy versions; Or
Described transmitting terminal each TTI in a described M TTI sends identical redundancy versions, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Described transmitting terminal sends redundancy versions according to predefined rule ordering each TTI in a described M TTI.
3. method according to claim 1 and 2 is characterized in that, described transmitting terminal also comprises according to after the redundancy versions of pre-defined rule in the described predetermined number of each TTI transmission redundancy versions of a described M TTI:
Described transmitting terminal carries out the re-transmission of a described predetermined number redundancy versions according to the second pre-defined rule.
4. method according to claim 3 is characterized in that, described transmitting terminal comprises according to the re-transmission that the second pre-defined rule carries out a described predetermined number redundancy versions:
Employing is transmitted the identical order of a described predetermined number redundancy versions with the first time and is retransmitted a described predetermined number redundancy versions;
The index that carries out the described predetermined number redundancy versions that retransmits for the N time is identical with the number of times of described re-transmission;
From the next redundancy versions of the index that transmits for the first time a described predetermined number redundancy versions, according to the numeric order of a described predetermined number redundancy versions, retransmit a described predetermined number redundancy versions.
5. method according to claim 1 and 2 is characterized in that, before described transmitting terminal is according to a redundancy versions in the described predetermined number of each a TTI transmission redundancy versions of the first pre-defined rule at a described M TTI, also comprises:
Described transmitting terminal is indicated used Resource Block RB number, RB index and/or the redundancy versions of each TTI among the described M TTI by the ascending resource information of giving in one or more down control channels.
6. method according to claim 5 is characterized in that, described transmitting terminal indicates used Resource Block RB number and/or the RB index of each TTI among the described M TTI to comprise by the ascending resource information of giving in the down control channel:
Described transmitting terminal is indicated the used RB number of each TTI among the described M TTI by the ascending resource information of giving in the down control channel that first TTI is corresponding among the described M TTI, wherein, the used RB number of each TTI is to determine according to channel condition information corresponding to described first TTI among the described M TTI, and used RB number and the RB index of each TTI is identical among the described M TTI.
7. method according to claim 5 is characterized in that, described transmitting terminal indicates used Resource Block RB number and/or the RB index of each TTI among the described M TTI to comprise by the ascending resource information of giving in M the down control channel:
Described transmitting terminal indicates a described M TTI to determine respectively used RB number and the RB index of this TTI by the ascending resource information of giving in the down control channel that each TTI is corresponding among the described M TTI, wherein, used RB number and/or the RB index of each TTI is to determine according to channel condition information corresponding to this each TTI among the described M TTI.
8. each described method in 7 according to claim 5 is characterized in that, the described ascending resource information of giving comprise following one of at least: dynamic dispatching is given information, is semi-staticly given information, accidental access response is given information.
9. method according to claim 1 and 2 is characterized in that, the data that described transmitting terminal carries according to a described transmission block generate a predetermined number redundancy versions and comprise:
The data communication device that described transmitting terminal carries a described transmission block is crossed the code check coupling and is obtained female code;
Described transmitting terminal generates a described predetermined number redundancy versions according to described female code.
10. method according to claim 1 and 2 is characterized in that, before the data aggregate that described transmitting terminal sends M TTI is encoded into a transmission block, also comprises:
Described transmitting terminal receives the signaling that the combined coding that is used to indicate coverage enhancement enables.
11. method according to claim 10 is characterized in that, the signaling that the described combined coding that is used to indicate coverage enhancement enables is to send in physical downlink control channel PDCCH or at Physical Downlink Shared Channel PDSCH.
12. method according to claim 1 and 2 is characterized in that, described M Transmission Time Interval TTI part on time domain disperses.
13. method according to claim 1 and 2 is characterized in that, it is one of following that described transmitting terminal comprises: base station, terminal, relay station, Home eNodeB.
14. a data transmission method is characterized in that comprising:
The data of the upper carrying of M the TTI that the receiving terminal receiving end/sending end sends;
Described receiving terminal is determined the redundancy versions that the upper one or more TTI of a described M TTI send according to the first pre-defined rule or the second pre-defined rule;
Described receiving terminal carries out combined decoding with described one or more redundancy versions and obtains the transmission block that transmitting terminal sends.
15. method according to claim 14 is characterized in that, the redundancy versions that described receiving terminal is determined the upper one or more TTI transmissions of a described M TTI according to the first pre-defined rule or the second pre-defined rule comprises:
When described predetermined number equaled M, described receiving terminal was according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, determined to send redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
During greater than M or less than M, determine described redundancy versions according to the indexed sequential of a described predetermined number redundancy versions in the order that each TTI of a described M TTI sends successively at described predetermined number; Or
The upper redundancy versions that sends of each TTI that described receiving terminal is determined among the described M TTI is identical, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Described receiving terminal is determined the redundancy versions index of the upper transmission of each TTI among the described M TTI according to predefined rule.
16. according to claim 14 or 15 described methods, it is characterized in that it is one of following that described receiving terminal comprises: base station, terminal, relay station, Home eNodeB.
17. a data transmission device is applied to transmitting terminal, it is characterized in that comprising:
Coding module, the data aggregate that is used for M Transmission Time Interval TTI sent is encoded into a transmission block, and wherein, M is the integer greater than 1;
Generation module, the data that are used for carrying according to a described transmission block generate a predetermined number redundancy versions;
Sending module is for a redundancy versions that sends a described predetermined number redundancy versions according to the first pre-defined rule or the second pre-defined rule at each TTI of a described M TTI.
18. device according to claim 17 is characterized in that, described sending module one of in the following manner sends a redundancy versions in the described predetermined number redundancy versions at each TTI of a described M TTI::
When described predetermined number equaled M, described transmitting terminal was according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, sent redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
At described predetermined number during greater than M or less than M, send successively at each TTI of a described M TTI according to the indexed sequential of a described predetermined number redundancy versions; Or
Described transmitting terminal each TTI in a described M TTI sends identical redundancy versions, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Described transmitting terminal is determined the redundancy versions index of the upper transmission of each TTI among the described M TTI according to predefined rule.
19. according to claim 17 or 18 described devices, it is characterized in that, also comprise:
Retransmission module is used for carrying out the re-transmission of a described predetermined number redundancy versions according to the second pre-defined rule.
20. device according to claim 19 is characterized in that, described retransmission module one of in the following manner carries out carrying out according to the second pre-defined rule the re-transmission of a described predetermined number redundancy versions:
Employing is transmitted the identical order of a described predetermined number redundancy versions with the first time and is retransmitted a described predetermined number redundancy versions;
The index that carries out the described predetermined number redundancy versions that retransmits for the N time is identical with the number of times of described re-transmission;
From the next redundancy versions of the index that transmits for the first time a described predetermined number redundancy versions, according to the numeric order of a described predetermined number redundancy versions, retransmit a described predetermined number redundancy versions.
21. a data transmission device is applied to receiving terminal, it is characterized in that comprising:
Receiver module is used for the upper data of carrying of M TTI that receiving end/sending end sends;
Determination module is used for determining the redundancy versions that the upper one or more TTI of a described M TTI send according to the first pre-defined rule or the second pre-defined rule;
Decoder module obtains the transmission block that transmitting terminal sends for described redundancy versions is decoded.
22. device according to claim 21 is characterized in that, described determination module is determined one of in the following manner described redundancy versions:
When described predetermined number equals M, according to the corresponding relation of the time slot numeric order of each TTI among the indexed sequential of redundancy versions and the described M TTI, determine to send redundancy versions corresponding to this each TTI time slot sequence number at described each TTI; Or
During greater than M or less than M, determine described redundancy versions according to the indexed sequential of a described predetermined number redundancy versions in the order that each TTI of a described M TTI sends successively at described predetermined number; Or
The upper redundancy versions that sends of each TTI of determining among the described M TTI is identical, and wherein, described identical redundancy versions is the default redundancy versions in the described predetermined number redundancy versions; Or
Determine the redundancy versions of the upper transmission of each TTI among the described M TTI according to predefined rule.
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