WO2017193260A1 - 一种数据传输的方法及装置 - Google Patents

一种数据传输的方法及装置 Download PDF

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Publication number
WO2017193260A1
WO2017193260A1 PCT/CN2016/081416 CN2016081416W WO2017193260A1 WO 2017193260 A1 WO2017193260 A1 WO 2017193260A1 CN 2016081416 W CN2016081416 W CN 2016081416W WO 2017193260 A1 WO2017193260 A1 WO 2017193260A1
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Prior art keywords
tbs
data
code rate
data transmission
base station
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PCT/CN2016/081416
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English (en)
French (fr)
Inventor
秦一平
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16901215.0A priority Critical patent/EP3444977A4/en
Priority to PCT/CN2016/081416 priority patent/WO2017193260A1/zh
Priority to CN201680084943.4A priority patent/CN109075894B/zh
Publication of WO2017193260A1 publication Critical patent/WO2017193260A1/zh
Priority to US16/184,496 priority patent/US20190081745A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0016—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • the data transmission channel in the Long Term Evolution (LTE) system includes a Physical Uplink Shared Channel (PUSCH) carrying uplink data and a Physical Downlink Shared Channel (PDSCH) carrying downlink data.
  • PUSCH Physical Uplink Shared Channel
  • PDSCH Physical Downlink Shared Channel
  • AMC Adaptive Modulation and Coding
  • HARQ Hybrid Automatic Repeat ReQuest
  • the AMC selects an appropriate modulation and coding mode according to the change of the wireless channel, and selects different modulation modes and code rates in the data transmission to adapt to the data transmission in the scenario of the data transmission and the channel quality difference in the scene with good channel quality.
  • HARQ is responsible for ensuring that data is correctly transmitted through data retransmission and merging in the event of an error in data transmission.
  • the AMC of the PUSCH and the PDSCH data transmission can ensure the correct demodulation and decoding of the data according to a large probability for the first data transmission, and the code rate of the selected data single transmission is relatively conservative, generally lower, and Below 1.0, the transport block size of the selected data single transmission is the size of the transport block corresponding to the code rate less than 1.0.
  • the transport block size of the selected data single transmission is the size of the transport block corresponding to the code rate less than 1.0.
  • the present application provides a data transmission method and apparatus, which can improve the code rate of data transmission and improve the spectrum efficiency of the transmission link.
  • a method of data transmission which can include:
  • the sending device acquires a first transport block size TBS, where the code rate corresponding to the first TBS is greater than or equal to 1;
  • the transmitting device acquires data of at least two different locations of the same coded block according to the second TBS, and sends the data to the receiving device, where the receiving device mixes the data of the at least two different locations.
  • Request HARQ merge decoding
  • the sending device may obtain the second TBS according to the first TBS whose code rate is greater than or equal to 1, and the absolute value of the difference between the second TBS and the first TBS is the smallest, or the second TBS is greater than or equal to the first TBS.
  • a TBS and the difference between the two is the smallest, or the second TBS is less than or equal to the first TBS and the difference between the two is the smallest, and the code rate of the second TBS is also greater than or equal to 1, and may be greater than or equal to 1 according to the code rate.
  • the second TBS acquires data of different locations of the same coding block and sends the data to the receiving device, where the receiving device performs HARQ merge decoding according to the data of different positions of the same coding block.
  • the present application can adopt TBS corresponding to a code rate greater than or equal to 1 for data transmission, which can improve the code rate of data transmission and improve the spectrum efficiency of the data transmission link.
  • the sending device is a base station, and the receiving device is a user equipment UE;
  • the sending device acquires the first TBS, including:
  • the base station calculates a first TBS according to a code rate of a predefined data transmission, and a number of scheduled resource blocks RB;
  • the code rate of the predefined data transmission is a code rate corresponding to the first TBS.
  • the method provided by the present application can define the code rate of the data transmission by itself, and further can determine the TBS of the corresponding data transmission, that is, the first TBS according to the predefined code rate of the data transmission and the number of scheduled RBs, thereby improving the code rate of the data transmission.
  • the sending device is a base station, and the receiving device is a UE;
  • the sending device acquires the first TBS, including:
  • the base station searches for a target TBS from a predefined TBS lookup table according to the modulation and coding mode MCS index of the data transmission and the number of scheduled RBs, and the code rate corresponding to the target TBS is less than 1;
  • the base station amplifies the target TBS by a factor of N to obtain a first TBS, where the N is a positive real number that causes a code rate corresponding to the first TBS to be greater than or equal to 1.
  • the method provided by the present application may search for a target TBS from a predefined TBS lookup table according to the MCS index of the data transmission and the number of scheduled RBs, and further amplify the target TBS corresponding to the code stream less than 1, to obtain the amplified first TBS.
  • the code rate of the first TBS is greater than or equal to one.
  • the foregoing predefined TBS lookup table may be a table set in the 3GPP standard protocol, which enhances the controllability of data transmission by using a TBS with a code rate greater than or equal to 1, and increases the application of the method described in this application. range.
  • the sending device is a UE, and the receiving device is a base station;
  • the sending device acquires the first TBS, including:
  • the UE acquires the first TBS according to the scheduling information.
  • the UE when the sending device is the UE and the receiving device is the base station, the UE may determine the first TBS for performing data transmission according to the scheduling information of the base station, and the base station may control the selection of the TBS in the data transmission. It ensures the consistency of the TBS of the data transmission of the receiving device and the transmitting device, and enhances the success rate of data transmission.
  • the scheduling information carries a preset data rate of the data transmission and a number of scheduled RBs
  • the acquiring, by the UE, the first TBS according to the scheduling information includes:
  • the UE calculates a first TBS according to the predefined code rate and the number of RBs.
  • the first TBS can be calculated according to the code rate of the predefined data transmission and the number of scheduled RBs carried in the scheduling information of the base station, and the consistency of the TBS of the sending device and the receiving device is ensured.
  • the scheduling information carries an MCS index of the data transmission and a number of scheduled RBs
  • the acquiring, by the UE, the first TBS according to the scheduling information includes:
  • the UE searches for a target TBS from a predefined TBS lookup table according to the MCS index and the number of scheduled RBs, where the target TBS corresponds to a code rate less than 1;
  • the UE amplifies the target TBS by a factor of N to obtain a first TBS, where the N is a positive real number that causes a code rate corresponding to the first TBS to be greater than or equal to 1.
  • the first TBS when the UE is used as the sending device, the first TBS can be calculated according to the MCS index and the number of scheduled RBs carried in the scheduling information of the base station, and the consistency of the TBS of the sending device and the receiving device is ensured, thereby enhancing the code rate.
  • the controllability of data transmission by a TBS greater than or equal to 1 increases the scope of application of the method described herein.
  • the sending device acquires data of the at least two different locations of the coding block according to the second TBS And sent to the receiving device separately, including:
  • the transmitting device determines, according to the size of the data of the coding block and the number of transmissions, a redundancy version used for each transmission;
  • the transmitting device determines, according to the redundancy version used for each transmission, the location of each transmitted data at the coded block;
  • the transmitting device acquires data transmitted each time at a position of the coding block according to the data transmitted each time;
  • the transmitting device sends the data transmitted each time to the receiving device.
  • the sending device may determine the number of transmissions of the foregoing coding block according to the size of the data of the second TBS and the scheduled coding block, and may also determine the redundancy for the data transmission according to the size of the data of the coding block and the number of transmissions.
  • the position of the data transmitted by the remaining version in the coding block, and the data of different positions of the coding block corresponding to each redundancy version can be obtained and sent to the receiving device, which can ensure the complete transmission of the data of different positions of the coding block during data transmission. Improve the success rate of the combined decoding of data by the receiving device.
  • the sending device is a UE, and the receiving device is a base station;
  • Receiving the scheduling information of the base station by the UE including:
  • the UE continuously receives M pieces of scheduling information of the base station in a preset time interval
  • the M pieces of scheduling information are the coding by the base station according to the second TBS and scheduling.
  • the size of the data of the block determines scheduling information that is sent to the UE after the scheduling number M required for scheduling the data of the encoding block by the second TBS, and the M is greater than 1.
  • the UE when the UE is used as the sending device, the UE can continuously receive multiple pieces of scheduling information of the base station in a preset time interval to perform data transmission according to the scheduling information, thereby shortening the delay of data transmission. Improve the efficiency of data transmission.
  • the frame structure adopted by the sending device and the receiving device for data transmission is a frame structure having a shortened transmission interval short TTI;
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the method for providing data transmission by the receiving device and the transmitting device provided by the present application may adopt a short TTI frame structure, which can shorten the delay of data transmission and improve the efficiency of data transmission.
  • the UE by using the target TBS to obtain a first TBS, is obtained by:
  • the rounding of the N times value of the target TBS includes rounding up, rounding down, or rounding off any one of rounding;
  • the target TBS corresponds to a first code rate
  • the second TBS corresponds to a second code rate
  • the second code rate is N times the target code rate
  • the target TBS when the UE enlarges the target TBS that is found, the target TBS may be multiplied by N and rounded, and the rounding manner may include multiple types, which increases the diversity of the zoom operation of the target TBS, and is rounded up after zooming in.
  • the operation convenience of searching for the second TBS according to the first TBS can also be improved, and the efficiency of data transmission is improved.
  • a method of data transmission which can include:
  • the second TBS is obtained in the predefined TBS set according to the first TBS whose corresponding code rate is greater than or equal to 1;
  • the receiving device performs hybrid automatic repeat request HARQ merge decoding on the received data of different locations of the coded block.
  • the method receiving device provided by the present application can receive data of different locations of the same coding block sent by the second TBS corresponding to the corresponding code stream by the transmitting device, thereby improving the efficiency of data transmission.
  • the receiving device can also perform HARQ merge decoding on data of different positions of the same coding block, thereby improving the accuracy of data decoding of the coded block of data transmission.
  • the method further includes:
  • the feedback mode includes at least one of the following: performing feedback once every time data is received, or performing feedback once every time K data is received;
  • K is a natural number greater than 1 and not greater than M.
  • the receiving device After receiving the data sent by the sending device, the receiving device provided by the method can also perform feedback according to multiple feedback manners, thereby improving the diversity of the manner of data feedback. If the receiving device adopts a feedback manner that receives a plurality of data and performs one feedback, the signaling of the data transmission can be saved, and the power consumption of the data transmission is reduced.
  • the receiving device is a base station, and the sending device is a UE;
  • the method further includes:
  • the base station calculates a first TBS, and acquires a second TBS in a predefined TBS set according to the first TBS, where an absolute value of a difference between the second TBS and the first TBS is the smallest, or The second TBS is greater than the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is smaller than the first TBS and the second TBS is different from the first TBS The difference is the smallest;
  • the UE Determining, by the base station, a scheduling number M required for scheduling the data of the coding block according to the second TBS according to the size of the data of the second TBS and the scheduled coding block, and continuously continuing to the preset time interval
  • the UE sends M pieces of scheduling information.
  • the base station is used as the receiving device, and when the UE is used as the sending device, the base station can determine the TBS and the number of data transmission times of the data transmission, and can further send multiple scheduling information to the UE in a preset time interval to ensure the receiving device during data transmission. Simultaneously with the TBS of the transmitting device, the delay of data transmission is shortened, and the efficiency of data transmission is improved.
  • the base station calculates the first TBS, including:
  • the base station calculates a first TBS according to a code rate of a predefined data transmission, and a number of the scheduled resource blocks RB, where the code rate of the predefined data transmission is a code rate corresponding to the first TBS; or
  • the base station searches for a target TBS from a predefined TBS lookup table according to the modulation and coding mode MCS index of the data transmission and the number of scheduled RBs, and enlarges the target TBS by N times to obtain a first TBS, where the The code rate corresponding to the target TBS is less than 1, and the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the base station is used as the receiving device, and when the UE is used as the sending device, the base station can determine the first TBS of the data transmission in multiple manners, improve the diversity of the TBS acquisition manner of the data transmission, and improve the adoption of the high code rate.
  • the applicability of data transmission improves the efficiency of data transmission and the spectral efficiency of data transmission links.
  • the scheduling information is used to trigger the UE to send data of the coded block to the base station;
  • the scheduling information carries the number of scheduled RBs and at least one of the following: a predefined code rate of data transmission, or an MCS index of data transmission.
  • the method provided by the application base station may send the code rate of the pre-defined data transmission, or the MCS index, and the number of scheduled RBs to the UE through scheduling information, trigger the UE to send the data of the coding block to the base station, and ensure the receiving device of the data transmission.
  • the consistency of the TBS adopted by the transmitting device enhances the accuracy of data transmission.
  • the frame structure used by the receiving device and the sending device to perform data transmission is to have a shortened transmission Interval short TTI frame structure
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • a transmitting device for data transmission which may include:
  • a first acquiring module configured to acquire a first transport block size TBS, where a code rate corresponding to the first TBS is greater than or equal to 1;
  • a second acquiring module configured to acquire, according to the first TBS acquired by the first acquiring module, a second TBS in a predefined TBS set, where an absolute value of the difference between the second TBS and the first TBS is The value is the smallest, or the second TBS is greater than or equal to the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is less than or equal to the first TBS and The difference between the second TBS and the first TBS is the smallest;
  • a sending module configured to acquire data of at least two different locations of the same coded block according to the second TBS acquired by the second acquiring module, and send the data to the receiving device, where the receiving device uses the at least two The data of different locations is subjected to hybrid automatic repeat request HARQ merge decoding.
  • the sending device is a base station, and the receiving device is a user equipment UE;
  • the first acquiring module is specifically configured to:
  • the code rate of the predefined data transmission is a code rate corresponding to the first TBS.
  • the sending device is a base station, and the receiving device is a UE;
  • the first acquiring module is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the sending device is a UE, and the receiving device is a base station;
  • the first acquiring module is specifically configured to:
  • the scheduling information carries a preset code rate of the data transmission and a number of scheduled RBs
  • the first acquiring module is specifically configured to:
  • the first TBS is calculated based on the predefined code rate and the number of RBs.
  • the scheduling information carries an MCS index of the data transmission and a number of scheduled RBs
  • the first acquiring module is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the sending module is specifically configured to:
  • the data transmitted each time is transmitted to the receiving device.
  • the sending device is a UE, and the receiving device is a base station;
  • the first acquiring module is specifically configured to:
  • the M pieces of scheduling information are determined by the base station, after determining, according to the size of the second TBS and the scheduled data of the coded block, the number of times of scheduling required for scheduling the data of the coded block according to the second TBS.
  • the scheduling information sent to the UE, the M being greater than one.
  • the frame structure used by the sending device and the receiving device for data transmission is shortened transmission Interval short TTI frame structure
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the first acquiring module is specifically configured to:
  • the rounding of the N times value of the target TBS includes rounding up, rounding down, or rounding off any one of rounding;
  • the target TBS corresponds to a first code rate
  • the second TBS corresponds to a second code rate
  • the second code rate is N times the target code rate
  • a fourth aspect provides a receiving device for data transmission, which may include:
  • a receiving module configured to receive data of the same coding block that is sent by the sending device at least twice according to the second transport block size TBS, where the data of the same coded block that is sent at least twice is data of different positions of the coded block
  • the second TBS is obtained in the predefined TBS set according to the first TBS whose corresponding code rate is greater than or equal to 1;
  • a decoding module configured to perform hybrid automatic repeat request HARQ merge decoding on data of different locations of the coded block received by the receiving module.
  • the receiving device further includes:
  • a feedback module configured to feed back, to the sending device, the receiving state of the data that the receiving module receives the coded block according to a preset feedback manner
  • the feedback mode includes at least one of the following: performing feedback once every time data is received, or performing feedback once every time K data is received;
  • K is a natural number greater than 1 and not greater than M.
  • the receiving device is a base station, and the sending device is a UE;
  • the receiving device further includes:
  • a scheduling module configured to calculate a first TBS, and obtain a second TBS in the predefined TBS set according to the first TBS, where an absolute value of the difference between the second TBS and the first TBS is the smallest, or The second TBS is greater than the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is smaller than the first TBS and the second TBS is different from the first TBS The difference between a TBS is the smallest;
  • the TBS schedules the number M of scheduling required for the data of the coding block, and continuously sends M pieces of scheduling information to the UE within a preset time interval.
  • the scheduling module is specifically configured to:
  • the scheduling information is used to trigger the UE to send data of the coded block to the base station;
  • the scheduling information carries the number of scheduled RBs and at least one of the following: a predefined code rate of data transmission, or an MCS index of data transmission.
  • the frame structure used by the receiving device and the sending device to perform data transmission is to have a shortened transmission Interval short TTI frame structure
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • a fifth aspect provides a transmitting terminal, which may include: a memory and a processor, a transmitter, the memory, the transmitter, and the processor connected;
  • the memory is for storing a set of program codes
  • the processor and the transmitter are configured to invoke the program code stored in the memory to perform the following operations:
  • the processor is configured to acquire a first transport block size TBS, where a code rate corresponding to the first TBS is greater than or equal to 1;
  • the processor is further configured to acquire a second TBS according to the predefined TBS set stored in the memory by the first TBS, where an absolute value of a difference between the second TBS and the first TBS Minimum, or the second TBS is greater than or equal to the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is less than or equal to the first TBS And the difference between the second TBS and the first TBS is the smallest;
  • the processor is further configured to acquire data of at least two different locations of the same coded block according to the second TBS;
  • the transmitter is configured to send data of at least two different locations of the same coded block acquired by the processor to the receiving terminal, where the receiving terminal mixes the data of the at least two different locations automatically.
  • the retransmission request HARQ merge decoding is configured to send data of at least two different locations of the same coded block acquired by the processor to the receiving terminal, where the receiving terminal mixes the data of the at least two different locations automatically.
  • the sending terminal is a base station, and the receiving terminal is a user equipment UE;
  • the processor is specifically configured to:
  • the code rate of the predefined data transmission is a code rate corresponding to the first TBS.
  • the sending terminal is a base station, and the receiving terminal is a UE;
  • the processor is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the sending terminal is a UE, and the receiving terminal is a base station;
  • the processor is specifically configured to:
  • the scheduling information carries a preset data rate of the data transmission and a number of scheduled RBs
  • the processor is specifically configured to:
  • the first TBS is calculated based on the predefined code rate and the number of RBs.
  • the scheduling information carries an MCS index of the data transmission and a number of scheduled RBs
  • the processor is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the processor is specifically configured to:
  • the transmitter is specifically configured to:
  • the sending device is a UE, and the receiving device is a base station;
  • the processor is specifically configured to:
  • the M pieces of scheduling information are determined by the base station, after determining, according to the size of the second TBS and the scheduled data of the coded block, the number of times of scheduling required for scheduling the data of the coded block according to the second TBS.
  • the scheduling information sent to the UE, the M being greater than one.
  • the frame structure adopted by the sending terminal and the receiving terminal for data transmission is to have a shortened transmission Interval short TTI frame structure
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the processor is specifically configured to:
  • the rounding of the N times value of the target TBS includes rounding up, rounding down, or rounding off any one of rounding;
  • the target TBS corresponds to a first code rate
  • the second TBS corresponds to a second code rate
  • the second code rate is N times the target code rate
  • a receiving terminal which can include: a memory, a receiver, and a processor, wherein the memory, the receiver, and the processor are connected;
  • the memory is for storing a set of program codes
  • the receiver and the processor are configured to invoke the program code stored in the memory to perform the following operations:
  • the receiver is configured to receive data of the same coding block that is sent by the transmitting terminal according to the second transmission block size TBS at least twice, and the data of the same coding block that is sent at least twice is different positions of the coding block.
  • Data, the second TBS is obtained in a predefined TBS set according to a first TBS whose corresponding code rate is greater than or equal to 1;
  • the processor is configured to perform hybrid automatic repeat request HARQ merge decoding on data of different locations of the coded block received by the receiver.
  • the processor is further configured to:
  • the feedback mode includes at least one of the following: performing feedback once every time data is received, or performing feedback once every time K data is received;
  • K is a natural number greater than 1 and not greater than M.
  • the receiving terminal is a base station, and the sending terminal is a UE;
  • the processor is further configured to:
  • Calculating a first TBS and acquiring, according to the first TBS, a second TBS in a predefined TBS set, where an absolute value of a difference between the second TBS and the first TBS is the smallest, or the second TBS Greater than the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is smaller than the first TBS and the difference between the second TBS and the first TBS Minimum
  • the processor is specifically configured to:
  • the scheduling information is used to trigger the UE to send data of the coded block to the base station;
  • the scheduling information carries the number of scheduled RBs and at least one of the following: a predefined code rate of data transmission, or an MCS index of data transmission.
  • a frame structure used by the receiving terminal and the transmitting terminal to perform data transmission is to have a shortened transmission Interval short TTI frame structure
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • a system for data transmission which may include: the foregoing transmitting terminal and the receiving terminal.
  • FIG. 1 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of data interaction between a receiving device and a transmitting device of uplink data transmission
  • FIG. 3 is a schematic flowchart of uploading data transmission according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a receiving device performing data combining and decoding on a coded block
  • FIG. 6 is a schematic diagram of an adaptive retransmission flow of uplink data transmission
  • FIG. 7 is a schematic diagram of a comparison of retransmission feedback timings
  • FIG. 9 is another schematic flowchart of a method for data transmission according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a transmitting device for data transmission according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a receiving device for data transmission according to an embodiment of the present invention.
  • FIG. 12 is another schematic structural diagram of a receiving device for data transmission according to an embodiment of the present invention.
  • FIG. 13 is another schematic structural diagram of a receiving device for data transmission according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 15 is another schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a system for data transmission according to an embodiment of the present invention.
  • the code rate of the data transmission described in the embodiment of the present invention is defined as a ratio of the number of bits of useful information that needs to be transmitted to the number of bits of data that can be transmitted by the air interface.
  • the higher the code rate of the data transmission the higher the spectral efficiency of the transmission link, and the lower the code rate of the data transmission, the lower the frequency efficiency of the transmission link.
  • the code rate less than 1.0 indicates that the number of bits of useful information to be transmitted is smaller than the number of bits of data that can be transmitted by the air interface.
  • the data transmitted by the transmitting device to the receiving device needs to contain certain redundant data, so the code rate selected by the transmitting device for transmitting data will be less than 1.0.
  • the redundant data may be used to correct errors in the demodulation and decoding of the transmission data at the receiving device, so as to better demodulate and decode the data transmitted by the encoding end. If the receiving device cannot correctly decode the data sent by the sending device, the transmitting device needs to retransmit the data.
  • the code rate of the data transmission is reduced to ensure the correct probability of the first data transmission, which will further reduce the spectral efficiency of the transmission link.
  • the transmitting device can select a high code rate for data transmission, and when the high code rate is selected for data transmission, the data of the same code block can be transmitted multiple times.
  • the coded bits of different positions of the same code block are transmitted next time, that is, data of different positions of the same code block are transmitted each time, and the transmission is stopped after the receiving device correctly decodes.
  • the code rate of each data transmission corresponding to the same coding block may exceed 1.0, and the code rate exceeding 1.0 means that the data size of the air interface that can be transmitted in a single transmission is smaller than that required to be transmitted.
  • the number of bits of useful information does not include redundant data in a single transmission, and the receiving device cannot correctly decode the data according to a single transmission.
  • the receiving device may perform HARQ combining and decoding the data transmitted by the receiving device multiple times, and the bit combination equivalent code rate of different codes may be less than 1.0, and the lower the equivalent code rate, the more redundant information is included. And vice versa, so error correction can be obtained to obtain data of the coded block transmitted by the transmitting device. Since the erroneous transmission can be guaranteed by retransmission and the constraint that the first transmission must be transmitted with high probability is released, the rate selection can be more aggressive, and the spectral efficiency loss caused by unpredictable channel or neighbor interference can be converted into the same code. The fluctuation of the number of block transmissions avoids the loss of spectral efficiency.
  • FIG. 1 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention.
  • the method provided by the embodiment of the present invention includes the following steps:
  • the sending device acquires a first transport block size TBS.
  • the first transport block size (TBS) corresponds to a code rate greater than or equal to 1.
  • the foregoing sending device may be a base station or a UE.
  • the LTE system includes a PUSCH that carries uplink data and a PDSCH that carries downlink data.
  • the data transmission of the LTE includes transmission of downlink data carried by the PDSCH and transmission of uplink data carried by the PUSCH.
  • the base station is a transmitting device for data transmission
  • the UE is a receiving device for data transmission.
  • the UE is a transmitting device for data transmission
  • the base station is a receiving device for data transmission.
  • the base station when the sending device is a base station and the receiving device is a UE, the base station When acquiring the first TBS, the first TBS may be calculated according to a code rate of a predefined data transmission, and a number of scheduled Resource Blocks (RBs).
  • the code rate of the foregoing predefined data transmission is greater than or equal to a code rate of 1. That is, the base station may predefine a code rate greater than or equal to 1, and then calculate how much the TBS needs to be based on the pre-defined code rate and the number of scheduled RBs to make the data rate of the data transmission be the above-mentioned predefined code rate.
  • the code rate is a ratio of the number of bits of useful information to be transmitted to the number of bits of data that can be transmitted by the air interface, wherein the number of bits of useful information to be transmitted is determined by the TBS, and the number of bits of the data that can be transmitted by the air interface. It is determined by the number of RBs, and therefore, the size of the TBS can be determined by the predefined code rate and the number of RBs.
  • the base station may further transmit data determined according to a Modulation and Coding Scheme (MCS) of the data transmission and a number of scheduled RBs.
  • MCS Modulation and Coding Scheme
  • the code rate is amplified to amplify a code rate of less than one to a code rate greater than or equal to one.
  • the base station may select a TBS for data transmission according to the MCS index and the number of scheduled RBs. Since each TBS of the data transmission corresponds to a code rate, when the number of bits that can be transmitted by the air interface is constant, if the TBS is increased, the corresponding code rate is correspondingly increased. Therefore, the TBS of the data transmission selected by the base station is equivalent to the code rate at which the data transmission is selected.
  • the data transmission of the LTE restricts the selection of the MCS by controlling an Initial Block Error Rate (IBLER).
  • the base station may select the MCS according to a Signal to Interference plus Noise Ratio (SINR) or a Channel Quality Indicator (CQI), and further adjust the selected MCS according to the target value of the IBLER.
  • SINR Signal to Interference plus Noise Ratio
  • CQI Channel Quality Indicator
  • the target value of IBLER can be set to 10%. If the current data transmission IBLER is higher than the target value, the base station may lower the MCS selected according to the SINR or CQI to increase the probability of correctly transmitting data, thereby reducing the value of the IBLER to be close to the target value.
  • the base station may increase the MCS selected according to the SINR or CQI to increase the probability of erroneous transmission, thereby increasing the value of the IBLER to be close to the target value.
  • the base station increases the selected MCS to increase the probability of erroneous transmission to increase the value of the IBLER.
  • the transmission error probability is improved, the transmission code rate is also improved, and the spectrum efficiency of the system is guaranteed.
  • the TBS of the data transmission can be selected according to the MCS and the number of scheduled RBs.
  • the value range of the MCS index can be obtained after the MCS is quantized.
  • the PDSCH is used as an example.
  • the initial MCS index ranges from 0 to 28.
  • the base station may determine its corresponding MCS index according to the selected MCS, and then may be predefined according to the number of scheduled RBs.
  • the TBS lookup table finds the target TBS corresponding to the above MCS index and the number of RBs.
  • the foregoing predefined TBS lookup table includes Table 1 and Table 2.
  • Table 1 is the modulation and TBS index table of the PDSCH (see table7.1.7.1-1 in 3GPP TS36.213 v12.2.0 (2014-06)), and Table 2 is the transport block size table (see 3GPP).
  • the base station can find the TBS index from Table 1 according to the MCS index.
  • the target TBS corresponding to the TBS index and the number of RBs can be obtained from the table 2 according to the TBS index obtained by the search and the number of the RBs.
  • the TBS index 15 corresponding to the MCS index can be found in Table 1, and the target can be found from Table 2 according to the TBS index and the number of RBs.
  • the TBS is 2472.
  • the target TBS when the data transmission is the transmission of the downlink data carried by the PDSCH, after the base station finds the target TBS from the foregoing Table 2, the target TBS may be amplified by N times to obtain the first TBS. Specifically, the base station may multiply the target TBS by the multiple of multiples N to obtain the N times value of the target TBS, and then round the N times value of the obtained target TBS to obtain the first TBS.
  • the target TBS corresponds to the first code rate
  • the first TBS corresponds to the second code rate
  • the second code rate is N times the first code rate
  • N is a positive real number that makes the code rate corresponding to the second TBS greater than or equal to 1. .
  • the base station can determine the multiple that needs to be amplified when the code rate is increased to a code rate greater than or equal to 1 according to the code rate corresponding to the target TBS, set the amplification factor to N, and then enlarge the target TBS according to the amplification factor N, and then The first TBS is obtained by rounding the enlarged TBS, so that the second code rate corresponding to the first TBS is not less than 1.
  • the magnification of the target TBS obtained by the MCS search may be the same or different, and may be determined according to application requirements, and is not limited herein.
  • the base station finds that the target TBS is 2472 according to the foregoing implementation manner, and the target TBS is 2472 corresponding to the first code rate.
  • the base station when the data transmission is transmission of uplink data carried by the PUSCH, the base station functions as a receiving device, and the UE functions as a transmitting device.
  • the TBS of the data transmission is searched between the base station and the UE by using an agreed search rule, and the specific search rule may be agreed.
  • the receiving device and the transmitting device use the same search rule to find the TBS for data transmission, which can ensure the smooth transmission of data and receive data, and ensure the correct decoding of the data.
  • the data transmission of the base station and the UE may be controlled by the base station, that is, the code rate may be selected by the base station or the data rate of the data transmission is predefined, and determined by the base station.
  • the information of the number of RBs to be scheduled may send scheduling information to the UE, and trigger the UE to perform data transmission.
  • the base station may also send the code rate of the pre-defined data transmission and the number of scheduled RBs to the UE by using the scheduling information, so that the UE obtains the first TBS.
  • the base station may send, by using the scheduling information, the TBS search information, such as the foregoing predefined code rate or the selected MCS index, and the number of scheduled RBs.
  • the UE is configured to obtain, by the UE, the corresponding TBS according to the foregoing TBS search information.
  • the UE when the scheduling information carries the code rate of the data transmission predefined by the base station and the number of scheduled RBs, after receiving the scheduling information, the UE may be based on the foregoing predefined code rate and the foregoing RB.
  • the number calculates the first TBS.
  • the implementation manner of the first TBS is calculated by the UE according to the code rate and the RB, and the implementation manner of the first TBS is calculated by the base station according to the predefined code rate. .
  • the UE may obtain a predefined TBS lookup table according to the foregoing MCS index and the number of RBs.
  • the target TBS is searched for, wherein the above TBS lookup table includes Table 2 and Table 3 above.
  • Table 3 shows the modulation, TBS index and redundancy version table of the PUSCH (see table 8.6.1-1 in 3GPP TS 36.213 v12.2.0 (2014-06)).
  • the UE may find the TBS index from the foregoing Table 3 according to the MCS index, and then find the target TBS according to the TBS index and the scheduled number of RBs obtained by searching, where the target TBS has a code rate less than 1.
  • the target TBS may also be amplified by N times to obtain a first TBS, where the N is a positive real number that makes the code rate of the first TBS greater than or equal to 1.
  • the base station may send the foregoing MCE index and the number of RBs to the UE by using scheduling information, and after determining the MCS index and the number of RBs according to the scheduling information,
  • the corresponding MCS index can be found in Table 3.
  • the TBS index 15 can further find the target TBS from the table 2 according to the TBS index and the number of RBs is 2472. After the UE finds that the target TBS is 2472, it can also be amplified according to the foregoing implementation manner to obtain the first TBS, which is 4944. For details, refer to the implementation manner of the foregoing base station, and details are not described herein again.
  • the first code rate corresponding to the target TBS may be amplified to obtain the first
  • the code rate is M1 times the code rate, and the M1 code rate can also be less than 1 or infinitely close to 1, which is not limited herein.
  • M1 is a positive real number less than N.
  • the code rate of the amplified TBS is less than 1, the data transmission of the transmitting device and the receiving device can still be performed according to the existing operation mode, that is, the receiving device can correctly decode the data originally transmitted by the transmitting device, and no longer Narration.
  • the code rate of the single transmission corresponding to the target TBS obtained by the sending device (the base station during downlink data transmission or the UE during uplink data transmission) according to the MCS index and the number of RBs is less than 1.0, if The transmitting device directly performs data transmission according to the target TBS, and the spectrum efficiency of the higher transmission link cannot be obtained. If the channel or neighboring interference stores unpredictable fluctuations, the code rate will be further reduced to ensure the correct probability of the first data transmission, which will result in a further reduction in the frequency efficiency of the transmission link.
  • the obtained target TBS can be amplified to obtain a larger TBS, and then the data transmission can be performed according to the amplified TBS, thereby improving the code rate of the data transmission, thereby ensuring the transmission link.
  • Spectral efficiency In order to ensure the spectrum efficiency of the transmission link, the obtained target TBS can be amplified to obtain a larger TBS, and then the data transmission can be performed according to the amplified TBS, thereby improving the code rate of the data transmission, thereby ensuring the transmission link.
  • the sending device acquires a second TBS in a predefined TBS set according to the first TBS.
  • the absolute value of the difference between the second TBS and the first TBS is the smallest, or the second TBS is greater than or equal to the first TBS, and the difference between the second TBS and the first TBS is the smallest, or the foregoing
  • the two TBSs are less than or equal to the first TBS and the difference between the second TBS and the first TBS is the smallest.
  • the second TBS may be obtained in the predefined TBS set according to the foregoing first TBS, where the predefined TBS set is as shown in Table 2 above. A collection of individual TBSs. If the data is transmitted as downlink data After the base station processes the first TBS, the TBS closest to the first TBS (ie, 4944) can be searched from the above table 2 (as in the case of 4968 in Table 2), and the found TBS is set to The second TBS, in turn, can perform data transmission according to the second TBS.
  • the foregoing TBS that is closest to the first TBS may include at least one of the following: the absolute value of the difference from the first TBS is the smallest, or is greater than or equal to the first TBS and the difference from the first TBS is the smallest, or is less than or It is equal to the first TBS and the difference from the first TBS is the smallest, and the like may be determined according to the actual application, and is not limited herein. It should be noted that the labels of the first TBS and the second TBS (ie, the first and second) are only for better differentiation and description, and the specific content is not limited. The first TBS and the second TBS are respectively searched by the base station. The value of the TBS involved in the different operations of the TBS.
  • the UE may also find the second TBS according to the foregoing implementation manner, and details are not described herein again.
  • the sending device acquires data of at least two different locations of the same coded block according to the second TBS, and sends the data to the receiving device.
  • the code rate corresponding to the second TBS is greater than 1
  • the data size of the air interface transmittable by the base station is smaller than the number of bits of useful information to be transmitted.
  • the data transmitted in a single transmission does not include redundant data, and the receiving device (ie, the UE) cannot correctly decode the data according to the single transmission.
  • the base station needs to perform multiple transmissions on the data of the same coding block, and the UE may perform HARQ combining and decoding the data transmitted by the received base station multiple times, and the equivalent code rate of the bit combination after different coding will be less than 1.0, the equivalent code rate.
  • the data transmission is an uplink data transmission
  • the data size of the air interface that can be transmitted by the UE for one single transmission is smaller than the number of bits of the useful information to be transmitted, and the data transmitted in a single transmission does not include the redundant data, and the receiving device (ie, the base station) cannot Correct decoding based on data transmitted in a single pass.
  • the UE needs to perform multiple transmissions on the data of the same coding block, and the base station may perform HARQ combining and decoding the data transmitted by the received UE multiple times, and the equivalent code rate of the bit combination after different coding is less than 1.0, the equivalent code rate.
  • the base station may determine, according to the size of the data of the second TBS and the scheduled data block, the number of transmissions required to transmit the foregoing coding block to the UE according to the foregoing second TBS.
  • the base station may be configured according to the size of the data of the coding block and the determined number of transmissions, wherein the number of transmissions is greater than one.
  • the base station determines the redundancy version used for each transmission, and then determines the location of each transmitted data in the above-described coding block based on the redundancy version used for each transmission. After the base station determines the position of the data transmitted by each redundancy version in the above-mentioned coding block, the data transmitted in each of the above-mentioned coding blocks can be obtained according to the position of the data transmitted in each of the above-mentioned redundancy versions, and the redundancy is performed according to the above redundancy.
  • the sorting order of the remaining versions sends the obtained data of each transmission to the UE.
  • the UE may perform HARQ combining and decoding on the data of multiple redundancy versions.
  • the code combining equivalent code rate of different codes may be less than 1.0, and the equivalent code rate is lower. The more redundant information is included, and vice versa, so error correction can be obtained to obtain the data of the above coded block.
  • the base station may determine, according to the size of the data of the second TBS and the scheduled coding block, a scheduling required to schedule data of the coding block according to the second TBS. The number of times M.
  • the base station schedules the coded block data
  • the UE also performs data transmission according to the size of the second TBS.
  • the code rate of the second TBS is greater than 1, and the data base station transmitted by the UE cannot be correctly decoded. Therefore, the base station needs to perform multiple
  • the secondary scheduling triggers the UE to perform multiple data transmissions. Therefore, the above-mentioned scheduling number M is greater than 1.
  • the base station may continuously send M pieces of scheduling information to the UE within a preset time interval.
  • the scheduling information of each of the TBSs carries the search information of the TBS, that is, the scheduling information carries the number of scheduled RBs and the code rate of the predefined data transmission, or the number of RBs and data transmissions carried in the scheduling information.
  • the preset time interval may be a plurality of shortened transmission time intervals (TTIs), that is, a short TTI, between the first scheduling information sent by the base station and the data uploaded by the UE corresponding to the scheduling information.
  • TTIs shortened transmission time intervals
  • the base station sends the scheduling information to the UE once, and the UE feeds back the uplink data to the base station.
  • the base station After receiving the uplink data sent by the UE, the base station sends the next scheduling information, and the UE sends feedback to the base station.
  • One uplink data this cycle until all data transfers are completed.
  • the base station sends the scheduling information to the UE to the base station to feed back the uplink data corresponding to the scheduling information to the UE.
  • the base station sends the next scheduling information and waits for several transmission intervals. The more the number, the longer the base station waits, the longer the data transmission, and the lower the transmission efficiency.
  • the number of RBs carried in the M pieces of scheduling information sent by the base station to the UE may be the same or different, and may be determined according to actual application requirements, and is not limited herein.
  • the number of RBs carried in each scheduling information sent by the base station to the UE determines how much data is sent in each redundancy version, and the number of RBs may be selected such that the data sent by each redundancy version is as close as possible to the code corresponding to each redundancy version. All useful data on the location of the block.
  • FIG. 3 is a schematic flowchart of uploading data transmission according to an embodiment of the present invention.
  • the base station may predetermine the number of schedulings required for data transmission of the coding block. If the number of scheduling M is 2, the base station may send M-1 times on consecutive short TTIs after transmitting the first scheduling information (as shown in FIG. 3, M- 1 is the remaining one of the 2 times) scheduling information, and the remaining M-1 scheduling information is delivered by using the time interval between the delivery of the first scheduling information and the reception of the corresponding uplink data.
  • the base station can determine the second TBS when the UE transmits data as the transmitting device according to the implementation manner of the transmitting device, and can also be based on the size of the data of the scheduled coding block. The number of schedulings is determined, and multiple scheduling information can be sent to the UE within a preset time.
  • the specific implementation manner of the second TBS when the base station is used as the receiving device to determine the data transmission by the UE may participate in the implementation of the foregoing base station as the sending device, and details are not described herein again.
  • the UE may continuously receive the M pieces of scheduling information of the base station in the preset time interval, and further determine, according to the M pieces of scheduling information, the scheduled data corresponding to each piece of scheduling information. After receiving the first scheduling information, the UE may upload the data to the base station according to the time of the uplink data feedback, and then sequentially upload each of the M-1 scheduling information in a continuous time interval after the first uploading of the data.
  • the uplink data corresponding to the information shortens the data upload interval and improves the efficiency of data transmission.
  • FIG. 4 is a schematic structural diagram of an LTE slot.
  • the duration of one subframe is 1 millisecond (ms)
  • each subframe is further divided into two 0.5 ms slots, each slot containing 7 symbols (where the uplink data transmission corresponds)
  • the symbol is a single-carrier frequency-division multiple access (SC-FDMA) symbol
  • the symbol corresponding to the downlink data transmission is an orthogonal frequency division multiple access (OFDMA) symbol.
  • SC-FDMA single-carrier frequency-division multiple access
  • OFDMA orthogonal frequency division multiple access
  • the embodiment of the present invention can adopt Short TTI
  • the frame structure performs data transmission, that is, only one 1, 2, 3, 4 or 7 SC-FDMA or OFDMA symbols may be included in one TTI (non-shortened TTI is 14 SC-FDMA or OFDMA symbols per TTI).
  • the amplification of the TBS is equivalent to the improvement of the code rate.
  • the data of the coding block needs to be transmitted multiple times, and the transmission delay of one coding block is increased.
  • the short TTI frame structure for data transmission can utilize the short TTI interval of the short TTI to solve the problem of increasing the transmission delay caused by increasing the bit rate, and ensuring the transmission delay and code after the bit rate is improved.
  • the transmission delay before the rate increase is similar, and the efficiency of data transmission is improved.
  • the base station may also perform M scheduling information transmission according to the data transmission manner shown in FIG. 2 on the short TTI frame structure, which is not limited herein.
  • the short TTI frame structure is used for data transmission. Even if the base station adopts the data transmission mode shown in FIG. 2, the data transmission increment can be reduced while the code rate is increased, and the transmission delay of the data transmission is similar to that before the code rate is improved.
  • FIG. 5 is a schematic diagram of a receiving device combining and decoding data sent by a transmitting device. It is assumed that the base station determines that the number of scheduling required to schedule the data of the coding block according to the second TBS is four times according to the size of the data of the coding block and the second TBS, and the base station may send four pieces of scheduling information to the UE.
  • the UE may use 8 redundancy versions (including RV0 to RV7) to upload data to the base station, specifically through initial transmission, first retransmission, second retransmission, and third retransmission. Upload 4 redundant version data to the base station.
  • the base station may perform combined decoding of the data of the coding block to obtain coded block data.
  • the data of the foregoing coding block may specifically be the information bit data shown in FIG. 5, and the parity bit data shown in FIG. 5 is a redundant bit, which can be used for error correction of the combined decoding.
  • the receiving device solves the problem that the transmitting device (the UE in the uplink data transmission and the base station in the downlink data transmission) uses the high code rate to perform data through the combined decoding of the data of the coding block.
  • the single transmission cannot be correctly demodulated and decoded during transmission.
  • the receiving device ensures that the data transmitted by the transmitting device using the high code rate can be correctly demodulated and decoded through the combined decoding, so as to ensure the correct transmission of data.
  • Increased bit rate If the other conditions of the data transmission are unchanged, the increase in the code rate also improves the spectral efficiency of the transmission link.
  • FIG. 6 is an adaptive retransmission flow of uplink data transmission. Schematic diagram.
  • the receiving device ie, the base station
  • the base station sends scheduling information to the UE, and after receiving the scheduling information, the UE uploads uplink data to the base station.
  • the base station feeds back the demodulation and decoding status of the uplink data to the UE, and sends retransmission scheduling information to the UE according to the demodulation and decoding status.
  • the UE After receiving the retransmission scheduling information, the UE retransmits the uplink data, and the loop is repeated until the uplink data demodulation and decoding succeeds.
  • the base station may feed back the receiving state of the data of the coding block to the UE according to a preset feedback manner.
  • the foregoing receiving state may include an ACK or a NACK, which respectively indicates correct demodulation decoding and incorrect demodulation decoding of the data.
  • the preset feedback manner may include: receiving data once for feedback, or receiving K times of data for feedback, wherein K is a natural number greater than 1 and not greater than M.
  • the base station may feedback the receiving state of the data after receiving the data fed back by the UE, and may also feedback the receiving state of the data after receiving the data fed back by the UE any number of times, or may receive the feedback of the UE after receiving all the times.
  • the reception status of the feedback data after the data is not limited here.
  • the specific implementation manner of the receiving state of the feedback data after the base station receives the data fed back by the UE may be implemented in the standard protocol of the 3GPP, and details are not described herein again. Referring to FIG. 7, FIG. 7 is a comparison diagram of retransmission feedback timing.
  • the feedback mode that is pre-agreed by the base station and the UE is that the feedback is received once after receiving the data for three times, that is, the number of times of non-feedback is two times, the base station may feedback the data after receiving the three times of data uploaded by the UE. Receive status.
  • FIG. 8 is another comparison diagram of retransmission feedback timing.
  • the base station may not send the initial data of the UE after transmitting the scheduling information of the initial data of the UE for the first time. The scheduling information of the two upload data, thereby reducing the overhead of control signaling.
  • the receiving device receives the transmitting device (ie, the UE in the uplink data transmission and the downlink data transmission).
  • the base station is transmitting data
  • multiple feedback methods may be included in the process of receiving data multiple times. That is, when receiving data of the same coding block, the receiving device can simultaneously adopt the method of receiving data feedback once and receiving data multiple times, and different feedback methods can be used in the process of receiving data of the same coding block multiple times. use.
  • the base station may receive the feedback mode of receiving the data reception state once when receiving the data for the first time and the second time receiving the data, and may also receive the data in the third time.
  • the base station may send the scheduling information of the coded block data according to the feedback manner agreed by the UE, and may be performed by using the method of continuously sending the scheduling information and the multiple scheduling information continuously, and the different scheduling information may be sent in the manner of It is used in the process of scheduling data of the same coded block, and is not limited here.
  • the base station may send the scheduling information of the next scheduling after receiving the data sent by the UE, and may also continuously send the scheduling information of the multiple schedulings before receiving the data sent by the UE.
  • the UE may also perform the feedback of the data receiving state according to the foregoing manner after receiving the coded block data sent by the base station.
  • Narration refers to the foregoing embodiment, where Narration.
  • the transmitting device when the transmitting device (the UE of the uplink data transmission or the base station of the downlink data transmission) transmits the data of the same coding block multiple times through multiple redundancy versions, the same coding block is different.
  • the TTI of the redundant version of the data transmission may be determined according to the actual application, and may be a plurality of consecutive TTIs or a plurality of discontinuous TTIs, and the operation is flexible and the adaptability is high.
  • the sending device may obtain a TBS with a code rate greater than or equal to 1 in the data transmission process, and perform multiple times of data of different positions of the same coding block by using the obtained TBS with a code rate greater than or equal to 1.
  • the data is transmitted to the receiving device, and the HARQ can be combined and decoded by the receiving device to transmit the data of the same code block transmitted by the transmitting device multiple times to ensure correct demodulation and decoding of the data in the data transmission state of the high code rate.
  • the transmitting device performs data transmission through a high-rate TBS, and the receiving device ensures correct reception and decoding of data transmitted at a high code rate through HARQ merge decoding of data, acquires time diversity gain and coding gain, and ensures transmission quality of the encoded block data. Improve the spectral efficiency of the data system.
  • FIG. 9 is another schematic flowchart of a method for data transmission according to an embodiment of the present invention.
  • the method described in the embodiments of the present invention includes the following steps:
  • the receiving device receives data of the same coding block that is sent by the sending device according to the second transport block size TBS at least twice.
  • the data of the same coding block that is sent at least twice is data of different positions of the coding block, and the second TBS is in the predefined TBS set, according to the first code corresponding to a code rate greater than or equal to 1. TBS gets it.
  • the receiving device mixes the received data of different locations of the coding block.
  • the method further includes:
  • the feedback mode includes at least one of the following: performing feedback once every time data is received, or performing feedback once every time K data is received;
  • K is a natural number greater than 1 and not greater than M.
  • the receiving device is a base station, and the sending device is a UE;
  • the method further includes:
  • the base station calculates a first TBS, and acquires a second TBS in a predefined TBS set according to the first TBS, where an absolute value of a difference between the second TBS and the first TBS is the smallest, or The second TBS is greater than the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is smaller than the first TBS and the second TBS is different from the first TBS The difference is the smallest;
  • the UE Determining, by the base station, a scheduling number M required for scheduling the data of the coding block according to the second TBS according to the size of the data of the second TBS and the scheduled coding block, and continuously continuing to the preset time interval
  • the UE sends M pieces of scheduling information.
  • the base station calculates the first TBS, including:
  • the base station calculates a first TBS according to a code rate of a predefined data transmission, and a number of the scheduled resource blocks RB, where the code rate of the predefined data transmission is a code rate corresponding to the first TBS; or
  • the base station searches for a target TBS from a predefined TBS lookup table according to the modulation and coding mode MCS index of the data transmission and the number of scheduled RBs, and enlarges the target TBS by N times to obtain a first TBS, where the The code rate corresponding to the target TBS is less than 1, and the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the scheduling information is used to trigger the UE to send data of the encoded block to the base station;
  • the scheduling information carries the number of scheduled RBs and at least one of the following information: The code rate of the defined data transmission, or the MCS index of the data transmission.
  • the frame structure adopted by the receiving device and the transmitting device for data transmission is a frame structure having a shortened transmission interval short TTI;
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the implementation manners of the receiving device in the uplink data transmission and the downlink data transmission may be referred to the implementation manners described in the foregoing steps in the foregoing embodiments, and details are not described herein again.
  • the receiving device may receive data of different locations of the same coding block that the transmitting device transmits multiple times according to the high code rate, and may further combine and decode the HARQ of the data of the same coding block that is transmitted multiple times.
  • the receiving device may receive data of different locations of the same coding block that the transmitting device transmits multiple times according to the high code rate, and may further combine and decode the HARQ of the data of the same coding block that is transmitted multiple times.
  • FIG. 10 is a schematic structural diagram of a transmitting device for data transmission according to an embodiment of the present invention.
  • the sending device described in the embodiment of the present invention includes:
  • the first obtaining module 11 is configured to obtain a first transport block size TBS, where a code rate corresponding to the first TBS is greater than or equal to 1.
  • a second acquiring module 12 configured to acquire, according to the first TBS acquired by the first acquiring module 11, a second TBS in a predefined TBS set, where the second TBS is different from the first TBS
  • the absolute value is the smallest, or the second TBS is greater than or equal to the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is less than or equal to the first TBS And the difference between the second TBS and the first TBS is the smallest.
  • the sending module 13 is configured to acquire data of at least two different locations of the same coded block according to the second TBS acquired by the second acquiring module 12, and send the data to the receiving device, where the receiving device uses the The data of at least two different locations is subjected to hybrid automatic repeat request HARQ merge decoding.
  • the sending device is a base station, and the receiving device is a user equipment UE;
  • the first obtaining module 11 is specifically configured to:
  • the code rate of the predefined data transmission is a code rate corresponding to the first TBS.
  • the sending device is a base station, and the receiving device is a UE;
  • the first obtaining module 11 is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the sending device is a UE, and the receiving device is a base station;
  • the first obtaining module 11 is specifically configured to:
  • the scheduling information carries a preset code rate of the data transmission and a number of scheduled RBs
  • the first obtaining module 11 is specifically configured to:
  • the first TBS is calculated based on the predefined code rate and the number of RBs.
  • the scheduling information carries an MCS index of the data transmission and a number of scheduled RBs
  • the first obtaining module 11 is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the sending module 13 is specifically configured to:
  • the data transmitted each time is transmitted to the receiving device.
  • the sending device is a UE, and the receiving device is a base station;
  • the first obtaining module 11 is specifically configured to:
  • the M pieces of scheduling information are determined by the base station, after determining, according to the size of the second TBS and the scheduled data of the coded block, the number of times of scheduling required for scheduling the data of the coded block according to the second TBS.
  • the scheduling information sent to the UE, the M being greater than one.
  • the frame structure adopted by the transmitting device and the receiving device for data transmission is a frame structure having a shortened transmission interval short TTI;
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the foregoing sending device may be specifically a UE in uplink data transmission or a base station in downlink data transmission.
  • the above-mentioned transmitting device can implement the corresponding implementation manners by using the modules included in the foregoing.
  • the specific implementation manners refer to the implementation manners described in the foregoing steps in the foregoing embodiments, and details are not described herein again.
  • the sending device may obtain a TBS with a code rate greater than or equal to 1 in the data transmission process, and perform multiple times of data of different positions of the same coding block by using the obtained TBS with a code rate greater than or equal to 1.
  • the data is transmitted to the receiving device, and the HARQ can be combined and decoded by the receiving device to transmit the data of the same code block transmitted by the transmitting device multiple times to ensure correct demodulation and decoding of the data in the data transmission state of the high code rate.
  • the transmitting device performs data transmission through a high-rate TBS, and the receiving device ensures correct reception and decoding of data transmitted at a high code rate through HARQ merge decoding of data, acquires time diversity gain and coding gain, and ensures transmission quality of the encoded block data. Improve the spectral efficiency of the data system.
  • FIG. 11 is a schematic structural diagram of a receiving device for data transmission according to an embodiment of the present invention.
  • the receiving device described in the embodiment of the present invention includes:
  • the receiving module 21 is configured to receive data of the same coding block that is sent by the sending device according to the second transmission block size TBS at least twice, where the data of the same coding block that is sent at least twice is different positions of the coding block.
  • Data, the second TBS is obtained in a predefined TBS set according to a first TBS whose corresponding code rate is greater than or equal to 1.
  • the decoding module 22 is configured to perform hybrid automatic repeat request HARQ merge decoding on the data of different positions of the coding block received by the receiving module.
  • FIG. 12 it is another schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • the above receiving device further includes:
  • the feedback module 23 is configured to feed back, to the sending device, the receiving state of the data that the receiving module receives the coded block according to a preset feedback manner;
  • the feedback mode includes at least one of the following: performing feedback once every time data is received, or performing feedback once every time K data is received;
  • K is a natural number greater than 1 and not greater than M.
  • FIG. 13 is another schematic structural diagram of a receiving device according to an embodiment of the present invention.
  • the receiving device is a base station, and the sending device is a UE;
  • the receiving device further includes:
  • the scheduling module 24 is configured to calculate a first TBS, and obtain a second TBS in the predefined TBS set according to the first TBS, where an absolute value of the difference between the second TBS and the first TBS is the smallest, Or the second TBS is greater than the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is smaller than the first TBS and the second TBS is The difference of the first TBS is the smallest;
  • the scheduling module 24 is specifically configured to:
  • the scheduling information is used to trigger the UE to send data of the encoded block to the base station;
  • the scheduling information carries the number of scheduled RBs and at least one of the following: a predefined code rate of data transmission, or an MCS index of data transmission.
  • the receiving device performs data transmission with the sending device.
  • the frame structure used is a frame structure with a shortened transmission interval short TTI;
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the receiving device may be a base station in uplink data transmission or a UE in downlink data transmission.
  • the above-mentioned receiving device can implement the corresponding implementation manners by using the modules included in the foregoing.
  • the specific implementation refer to the implementation manners described in the foregoing steps in the foregoing embodiments, and details are not described herein again.
  • the receiving device may receive data of different locations of the same coding block that the transmitting device transmits multiple times according to the high code rate, and may further combine and decode the HARQ of the data of the same coding block that is transmitted multiple times.
  • the receiving device may receive data of different locations of the same coding block that the transmitting device transmits multiple times according to the high code rate, and may further combine and decode the HARQ of the data of the same coding block that is transmitted multiple times.
  • FIG. 14 is a schematic structural diagram of an embodiment of a transmitting terminal according to an embodiment of the present invention.
  • the transmitting terminal described in the embodiment of the present invention includes: a memory 1001 and a processor 1002, a transmitter 1003, and the memory 1001, the transmitter 1003, and the processor 1002 are connected;
  • the memory 1001 is configured to store a set of program codes
  • the processor 1002 and the transmitter 1003 are configured to invoke the program code stored in the memory to perform the following operations:
  • the processor 1002 is configured to obtain a first transport block size TBS, where a code rate corresponding to the first TBS is greater than or equal to 1.
  • the processor 1002 is further configured to acquire a second TBS according to the predefined TBS set stored in the memory by the first TBS, where an absolute value of the difference between the second TBS and the first TBS is The value is the smallest, or the second TBS is greater than or equal to the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is less than or equal to the first TBS and The difference between the second TBS and the first TBS is the smallest.
  • the processor 1002 is further configured to acquire data of at least two different locations of the same coded block according to the second TBS.
  • the transmitter 1003 is configured to send data of at least two different locations of the same coded block acquired by the processor to the receiving terminal, where the receiving terminal uses the at least two different locations
  • the data is subjected to hybrid automatic repeat request HARQ merge decoding.
  • the sending terminal is a base station, and the receiving terminal is a user equipment UE;
  • the processor 1002 is specifically configured to:
  • the code rate of the predefined data transmission is a code rate corresponding to the first TBS.
  • the sending terminal is a base station, and the receiving terminal is a UE;
  • the processor 1002 is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the sending terminal is a UE, and the receiving terminal is a base station;
  • the processor 1002 is specifically configured to:
  • the scheduling information carries a preset code rate of the data transmission and a number of scheduled RBs
  • the processor 1002 is specifically configured to:
  • the first TBS is calculated based on the predefined code rate and the number of RBs.
  • the scheduling information carries an MCS index of the data transmission and a number of scheduled RBs
  • the processor 1002 is specifically configured to:
  • the target TBS is amplified by N times to obtain a first TBS, wherein the N is a positive real number that makes the code rate corresponding to the first TBS greater than or equal to 1.
  • the processor 1002 is specifically configured to:
  • the transmitter is specifically configured to:
  • the sending device is a UE, and the receiving device is a base station;
  • the processor 1002 is specifically configured to:
  • the M pieces of scheduling information are determined by the base station, after determining, according to the size of the second TBS and the scheduled data of the coded block, the number of times of scheduling required for scheduling the data of the coded block according to the second TBS.
  • the scheduling information sent to the UE, the M being greater than one.
  • the frame structure adopted by the transmitting terminal and the receiving terminal for data transmission is a frame structure having a shortened transmission interval short TTI;
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the foregoing sending terminal may specifically be a UE in uplink data transmission or a base station in downlink data transmission.
  • the foregoing sending terminal can perform the corresponding implementation manners by using the modules included in the foregoing.
  • the specific implementation manners refer to the implementation manners described in the foregoing steps in the foregoing embodiments, and details are not described herein again.
  • FIG. 15 is a schematic structural diagram of an embodiment of a receiving terminal according to an embodiment of the present invention.
  • the receiving terminal described in the embodiment of the present invention includes: a memory 2001, a receiver 2002, and a processor 2003, and the memory 2001, the receiver 2002, and the processor 2003 are connected;
  • the memory 2001 is configured to store a set of program codes
  • the receiver 2002 and the processor 2003 are configured to invoke the program code stored in the memory to perform the following operations:
  • the receiver 2002 is configured to receive data of a same coding block that is sent by the transmitting terminal according to the second transmission block size TBS at least twice, and the data of the same coding block that is sent at least twice is the For encoding data of different locations of the block, the second TBS is obtained in a predefined TBS set according to a first TBS whose corresponding code rate is greater than or equal to 1.
  • the processor 2003 is configured to perform hybrid automatic repeat request HARQ merge decoding on data of different locations of the coded block received by the receiver.
  • the processor 2003 is further configured to:
  • the feedback mode includes at least one of the following: performing feedback once every time data is received, or performing feedback once every time K data is received;
  • K is a natural number greater than 1 and not greater than M.
  • the receiving terminal is a base station, and the sending terminal is a UE;
  • the processor 2003 is further configured to:
  • Calculating a first TBS and acquiring, according to the first TBS, a second TBS in a predefined TBS set, where an absolute value of a difference between the second TBS and the first TBS is the smallest, or the second TBS Greater than the first TBS and the difference between the second TBS and the first TBS is the smallest, or the second TBS is smaller than the first TBS and the difference between the second TBS and the first TBS Minimum
  • the processor 2003 is specifically configured to:
  • the scheduling information is used to trigger the UE to send data of the encoded block to the base station;
  • the scheduling information carries the number of scheduled RBs and at least one of the following information: The code rate of the defined data transmission, or the MCS index of the data transmission.
  • the frame structure adopted by the receiving terminal and the transmitting terminal for data transmission is a frame structure having a shortened transmission interval short TTI;
  • the number of symbols included in each TTI in the frame structure of the short TTI includes any one of 1, 2, 3, 4, and 7.
  • the receiving terminal may be a base station in uplink data transmission or a UE in downlink data transmission.
  • the foregoing receiving terminal can perform the corresponding implementation manners by using the modules included in the foregoing.
  • the specific implementation manners refer to the implementation manners described in the foregoing steps in the foregoing embodiments, and details are not described herein again.
  • a system for data transmission may include: a transmitting terminal 1000 and a receiving terminal 2000 described in the embodiments of the present invention.
  • a transmitting terminal 1000 and a receiving terminal 2000 described in the embodiments of the present invention.
  • the sending terminal 1000 and the receiving terminal 2000 refer to the implementation manners described in the foregoing steps in the foregoing embodiments, and details are not described herein.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例提供了一种数据传输的方法，包括：发送设备获取第一传输块大小TBS，其中，第一TBS对应的码率大于或者等于1；发送设备根据第一TBS在预先定义的TBS集合中获取第二TBS，其中，第二TBS与第一TBS差值的绝对值最小，或者第二TBS大于或者等于第一TBS并且第二TBS与第一TBS的差值最小，或者第二TBS小于或者等于第一TBS并且第二TBS与第一TBS的差值最小；发送设备根据第二TBS获取同一个编码块至少两个不同位置的数据，并分别发送给接收设备，用于接收设备将所述至少两个不同位置的数据进行混合自动重传请求HARQ合并译码。本发明实施例还提供了一种数据传输的装置。采用本发明实施例，具体可提高数据传输的效率，提高数据链路的频谱效率的优点。

Description

一种数据传输的方法及装置 技术领域
本发明涉及通信技术领域，尤其涉及一种数据传输的方法及装置。
背景技术
长期演进(Long Term Evolution，LTE)系统中的数据传输信道包含承载上行数据的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)和承载下行数据的物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，PUSCH和PDSCH传输数据时采用自适应调制编码(Adaptive Modulation and Coding，AMC)和混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)技术。其中，AMC是根据无线信道变化选择合适的调制和编码方式，数据传输时通过选择不同的调制方式和码率来适应信道质量好的场景下的数据传输和信道质量差的场景下的数据传输，以确保链路的传输质量。HARQ负责在数据传输出错的情况下，通过数据重传与合并来保证数据能够正确传输。
现有技术中，PUSCH和PDSCH数据传输的AMC为了保证首次数据传输能够按照较大的概率进行数据的正确解调译码，选择的数据单次传输的码率较为保守，一般会稍低，且低于1.0，即选择的数据单次传输的传输块大小为小于1.0的码率对应的传输块的大小。在数据传输带宽保持不变的情况下，数据传输的码率越低，传输链路的频谱效率就越低，数据传输的码率越高，传输链路的频谱效率就越高。若要传输链路获得较大的频谱效率，则需要充分利用HARQ合并的增益，选择首次传输时较高的码率，甚至码率超过1.0。
发明内容
本申请提供了一种数据传输的方法及装置，可提高数据传输的码率，提高传输链路的频谱效率。
第一方面，提供了一种数据传输的方法，其可包括：
发送设备获取第一传输块大小TBS，其中，所述第一TBS对应的码率大于或者等于1；
所述发送设备根据所述第一TBS在预先定义的TBS集合中获取第二 TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
所述发送设备根据所述第二TBS获取同一个编码块至少两个不同位置的数据，并分别发送给接收设备，用于所述接收设备将所述至少两个不同位置的数据进行混合自动重传请求HARQ合并译码。
本申请提供的方法中，发送设备可根据码率大于或者等于1的第一TBS获取得到第二TBS，第二TBS与第一TBS的差值的绝对值最小，或者第二TBS大于或者等于第一TBS并且两者差值最小，或者第二TBS小于或者等于第一TBS并且两者差值最小，可保证第二TBS的码率也大于或者等于1，进而可根据码率大于或者等于1的第二TBS获取同一个编码块的不同位置的数据发送给接收设备，用于接收设备根据上述同一个编码块的不同位置的数据进行HARQ合并译码。本申请可采用对应码率大于或者等于1的TBS进行数据传输，可提高数据传输的码率，提高了数据传输链路的频谱效率。
结合第一方面，在第一种可能的实现方式中，所述发送设备为基站，所述接收设备为用户设备UE；
所述发送设备获取第一TBS，包括：
所述基站根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS；
其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率。
本申请提供的方法可自行定义数据传输的码率，进而可根据预先定义的数据传输的码率和调度的RB数目确定对应的数据传输的TBS，即第一TBS，提高了数据传输的码率的选择的灵活性，增强数据传输的效率和数据传输链路的频谱效率的可控性。
结合第一方面，在第二种可能的实现方式中，所述发送设备为基站，所述接收设备为UE；
所述发送设备获取第一TBS，包括：
所述基站根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
所述基站将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
本申请提供的方法可根据数据传输的MCS索引和调度的RB数目从预先定义的TBS查找表中查找目标TBS，进而可将对应码流小于1的目标TBS进行放大，得到放大后的第一TBS，并且第一TBS的码率大于或者等于1。其中，上述预先定义的TBS查找表可为3GPP标准协议中设定的表格，增强了采用码率大于或者等于1的TBS进行数据传输的可控性，增大了本申请所描述的方法的适用范围。
结合第一方面，在第三种可能的实现方式中，所述发送设备为UE，所述接收设备为基站；
所述发送设备获取第一TBS，包括：
所述UE接收所述基站的调度信息；
所述UE根据所述调度信息获取第一TBS。
本申请所描述的方法中当发送设备为UE，接收设备为基站时，UE可根据基站的调度信息来确定用于进行数据传输的第一TBS，可由基站来控制数据传输中的TBS的选择，保证接收设备和发送设备的数据传输的TBS的一致，增强数据传输的成功率。
结合第一方面第三种可能的实现方式，在第四种可能的实现方式中，所述调度信息中携带预先定义的数据传输的码率和调度的RB数目；
所述UE根据所述调度信息获取第一TBS，包括：
所述UE根据所述预先定义的码率和所述RB数目计算第一TBS。
本申请所描述的方法中UE作为发送设备时可根据基站的调度信息中携带的预先定义的数据传输的码率和调度的RB数目计算第一TBS，保证发送设备和接收设备的TBS的一致性，进而提高了数据传输的码率的选择的灵活性，增强数据传输的效率和数据传输链路的频谱效率的可控性。
结合第一方面第三种可能的实现方式，在第五种可能的实现方式中，所述调度信息中携带数据传输的MCS索引和调度的RB数目；
所述UE根据所述调度信息获取第一TBS，包括：
所述UE根据MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
所述UE将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
本申请提供的方法中UE作为发送设备时可根据基站的调度信息中携带的MCS索引和调度的RB数目计算第一TBS，保证发送设备和接收设备的TBS的一致性，进而增强了采用码率大于或者等于1的TBS进行数据传输的可控性，增大了本申请所描述的方法的适用范围。
结合第一方面至第一方面第五种可能的实现方式中任一种，在第六种可能的实现方式中，所述发送设备根据所述第二TBS获取编码块至少两个不同位置的数据，并分别发送给接收设备，包括：
所述发送设备根据所述第二TBS和调度的所述编码块的数据的大小，确定根据所述第二TBS传输所述编码块给所述接收设备所需的传输次数，所述传输次数大于1；
所述发送设备根据所述编码块的数据的大小和所述传输次数，确定每次传输使用的冗余版本；
所述发送设备根据每次传输使用的冗余版本确定每次传输的数据在所述编码块的位置；
所述发送设备根据所述每次传输的数据在所述编码块的位置获取每次传输的数据；
所述发送设备将所述每次传输的数据发送给所述接收设备。
本申请提供的方法中发送设备可根据第二TBS和调度的编码块的数据的大小确定传输上述编码块的传输次数，还可根据编码块的数据的大小和传输次数确定用于数据传输的冗余版本传输的数据在编码块中的位置，进而可获取每个冗余版本对应的编码块的不同位置的数据并发送给接收设备，可保证数据传输时完整传输编码块的不同位置的数据，提高接收设备进行数据的合并译码的成功率。
结合第一方面第三种可能的实现方式，在第七种可能的实现方式中，所述发送设备为UE，所述接收设备为基站；
所述UE接收所述基站的调度信息，包括：
所述UE在预设时间间隔内连续接收所述基站的M条调度信息；
其中，所述M条调度信息为所述基站根据所述第二TBS和调度的所述编码 块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M之后向所述UE发送的调度信息，所述M大于1。
本申请提供的方法中UE作为发送设备，基站作为接收设备时，UE可在预设时间间隔内连续接收基站的多条调度信息，以根据调度信息进行数据传输，可缩短数据传输的时延，提高数据传输的效率。
结合第一方面至第一方面第七种可能的实现方式中任一种，在第八种可能的实现方式中，
所述发送设备与所述接收设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
本申请提供的方法接收设备和发送设备进行数据传输可采用short TTI的帧结构，可缩短数据传输的时延，提高数据传输的效率。
结合第一方面第五种可能的实现方式，在第九种可能的实现方式中，所述UE将所述目标TBS放大N倍以得到第一TBS，包括：
将所述目标TBS乘上N以得到目标TBS的N倍值，并将所述目标TBS的N倍值进行取整以得到所述第一TBS；
其中，将所述目标TBS的N倍值进行取整包括向上取整、向下取整或者四舍五入取整中的任意一种取整方式；
所述目标TBS对应第一码率，所述第二TBS对应第二码率，所述第二码率为所述目标码率的N倍。
本申请提供的方法中UE将查找到的目标TBS进行放大时可目标TBS乘上N并进行取整，取整方式可包括多种，增加了目标TBS的放大操作的多样性，放大后取整也可提高根据第一TBS查找第二TBS的操作便捷性，提高数据传输的效率。
第二方面，提供了一种数据传输的方法，其可包括：
接收设备接收发送设备根据第二传输块大小TBS至少两次发送的同一个编码块的数据，所述至少两次发送的同一个编码块的数据为所述编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到；
所述接收设备将接收到的所述编码块的不同位置的数据进行混合自动重传请求HARQ合并译码。
本申请提供的方法接收设备可接收发送设备根据对应码流大于或者等于1的第二TBS发送的同一个编码块的不同位置的数据，提高了数据传输的效率。接收设备还可将同一个编码块的不同位置的数据进行HARQ合并译码，提高了数据传输的编码块的数据译码的准确性。
结合第二方面，在第一种可能的实现方式中，所述接收设备接收发送设备根据第二TBS至少两次发送的同一个编码块的数据之后，所述方法还包括：
所述接收设备按照预设的反馈方式向所述发送设备反馈所述编码块的数据的接收状态；
其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
其中，所述K为大于1并且不大于M的自然数。
本申请提供的方法接收设备接收到发送设备发送的数据之后，还可按照多种反馈方式进行反馈，提高了数据反馈的方式的多样性。若接收设备采用接收多次数据进行一次反馈的反馈方式还可节省数据传输的信令，降低数据传输的功耗。
结合第二方面或第二方面第一种可能的实现方式，在第二种可能的实现方式中，
所述接收设备为基站，所述发送设备为UE；
所述接收设备接收发送设备根据第二TBS至少两次发送的同一个编码块的数据之前，所述方法还包括：
所述基站计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
本申请提供的方法中基站作为接收设备，UE作为发送设备时，基站可确定数据传输的TBS和数据传输次数，进而可在预设时间间隔内向UE发送多条调度信息，保证数据传输时接收设备和发送设备的TBS的一致性的同时，缩短了数据传输的时延，提高了数据传输的效率。
结合第二方面第二种可能的实现方式，在第三种可能的实现方式中，所述基站计算第一TBS，包括：
所述基站根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
所述基站根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
本申请提供的方法中基站作为接收设备，UE作为发送设备时，基站可采用多种方式确定数据传输的第一TBS，提高了数据传输的TBS的获取方式的多样性，提高了采用高码率进行数据传输的适用性，提高数据传输的效率和数据传输链路的频谱效率。
结合第二方面第三种可能的实现方式，在第四种可能的实现方式中，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先定义的数据传输的码率，或者数据传输的MCS索引。
本申请提供的方法基站可将预先定义的数据传输的码率，或者MCS索引，以及调度的RB数目通过调度信息发送给UE，触发UE向基站发送编码块的数据，保证数据传输的接收设备和发送设备采用的TBS的一致性，增强数据传输的准确性。
结合第二方面至第二方面第四种可能的实现方式中任一种，在第五种可能的实现方式中，所述接收设备与所述发送设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
第三方面，提供了一种数据传输的发送设备，其可包括：
第一获取模块，用于获取第一传输块大小TBS，其中，所述第一TBS对应的码率大于或者等于1；
第二获取模块，用于根据所述第一获取模块获取的所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
发送模块，用于根据所述第二获取模块获取的所述第二TBS获取同一个编码块至少两个不同位置的数据，并分别发送给接收设备，用于所述接收设备将所述至少两个不同位置的数据进行混合自动重传请求HARQ合并译码。
结合第三方面，在第一种可能的实现方式中，所述发送设备为基站，所述接收设备为用户设备UE；
所述第一获取模块具体用于：
根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS；
其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率。
结合第三方面，在第二种可能的实现方式中，所述发送设备为基站，所述接收设备为UE；
所述第一获取模块具体用于：
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
结合第三方面，在第三种可能的实现方式中，所述发送设备为UE，所述接收设备为基站；
所述第一获取模块具体用于：
接收所述基站的调度信息，根据所述调度信息获取第一TBS。
结合第三方面第三种可能的实现方式，在第四种可能的实现方式中，所述调度信息中携带预先定义的数据传输的码率和调度的RB数目；
所述第一获取模块具体用于：
根据所述预先定义的码率和所述RB数目计算第一TBS。
结合第三方面第三种可能的实现方式，在第五种可能的实现方式中，所述调度信息中携带数据传输的MCS索引和调度的RB数目；
所述第一获取模块具体用于：
根据MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
结合第三方面至第三方面第五种可能的实现方式中任一种，在第六种可能的实现方式中，所述发送模块具体用于：
根据所述第二TBS和调度的所述编码块的数据的大小，确定根据所述第二TBS传输所述编码块给所述接收设备所需的传输次数，所述传输次数大于1；
根据所述编码块的数据的大小和所述传输次数，确定每次传输使用的冗余版本；
根据每次传输使用的冗余版本确定每次传输的数据在所述编码块的位置；
根据所述每次传输的数据在所述编码块的位置获取每次传输的数据；
将所述每次传输的数据发送给所述接收设备。
结合第三方面第三种可能的实现方式，在第七种可能的实现方式中，所述发送设备为UE，所述接收设备为基站；
所述第一获取模块具体用于：
在预设时间间隔内连续接收所述基站的M条调度信息；
其中，所述M条调度信息为所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M之后向所述UE发送的调度信息，所述M大于1。
结合第三方面至第三方面第七种可能的实现方式中任一种，在第八种可能的实现方式中，所述发送设备与所述接收设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
结合第三方面第五种可能的实现方式，在第九种可能的实现方式中，所述第一获取模块具体用于：
将所述目标TBS乘上N以得到目标TBS的N倍值，并将所述目标TBS的N倍值进行取整以得到所述第一TBS；
其中，将所述目标TBS的N倍值进行取整包括向上取整、向下取整或者四舍五入取整中的任意一种取整方式；
所述目标TBS对应第一码率，所述第二TBS对应第二码率，所述第二码率为所述目标码率的N倍。
第四方面，提供了一种数据传输的接收设备，其可包括：
接收模块，用于接收发送设备根据第二传输块大小TBS至少两次发送的同一个编码块的数据，所述至少两次发送的同一个编码块的数据为所述编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到；
译码模块，用于将所述接收模块接收到的所述编码块的不同位置的数据进行混合自动重传请求HARQ合并译码。
结合第四方面，在第一种可能的实现方式中，所述接收设备还包括：
反馈模块，用于按照预设的反馈方式向所述发送设备反馈所述接收模块接收所述编码块的数据的接收状态；
其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
其中，所述K为大于1并且不大于M的自然数。
结合第四方面或者第四方面第一种可能的实现方式，在第二种可能的实现方式中，所述接收设备为基站，所述发送设备为UE；
所述接收设备还包括：
调度模块，用于计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二 TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
结合第四方面第二种可能的实现方式，在第三种可能的实现方式中，所述调度模块具体用于：
根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
结合第四方面第三种可能的实现方式，在第四种可能的实现方式中，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先定义的数据传输的码率，或者数据传输的MCS索引。
结合第四方面至第四方面第四种可能的实现方式中任一种，在第五种可能的实现方式中，所述接收设备与所述发送设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
第五方面提供了一种发送终端，其可包括：存储器和处理器、发送器，所述存储器、所述发送器和所述处理器连接；
所述存储器用于存储一组程序代码；
所述处理器和所述发送器用于调用所述存储器中存储的所述程序代码执行如下操作：
所述处理器，用于获取第一传输块大小TBS，其中，所述第一TBS对应的码率大于或者等于1；
所述处理器，还用于根据所述第一TBS在所述存储器中存储的预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于或者等于所述第一TBS 并且所述第二TBS与所述第一TBS的差值最小；
所述处理器，还用于根据所述第二TBS获取同一个编码块至少两个不同位置的数据；
所述发送器，用于将所述处理器获取的同一个编码块至少两个不同位置的数据分别发送给接收终端，用于所述接收终端将所述至少两个不同位置的数据进行混合自动重传请求HARQ合并译码。
结合第五方面，在第一种可能的实现方式中，所述发送终端为基站，所述接收终端为用户设备UE；
所述处理器具体用于：
根据所述存储器中存储的预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS；
其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率。
结合第五方面，在第二种可能的实现方式中，所述发送终端为基站，所述接收终端为UE；
所述处理器具体用于：
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
结合第五方面，在第三种可能的实现方式中，所述发送终端为UE，所述接收终端为基站；
所述处理器具体用于：
接收所述基站的调度信息，根据所述调度信息获取第一TBS。
结合第五方面第三种可能的实现方式，在第四种可能的实现方式中，所述调度信息中携带预先定义的数据传输的码率和调度的RB数目；
所述处理器具体用于：
根据所述预先定义的码率和所述RB数目计算第一TBS。
结合第五方面第三种可能的实现方式，在第五种可能的实现方式中，所述调度信息中携带数据传输的MCS索引和调度的RB数目；
所述处理器具体用于：
根据MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
结合第五方面至第五方面第五种可能的实现方式中任一种，在第六种可能的实现方式中，所述处理器具体用于：
根据所述第二TBS和调度的所述编码块的数据的大小，确定根据所述第二TBS传输所述编码块给所述接收终端所需的传输次数，所述传输次数大于1；
根据所述编码块的数据的大小和所述传输次数，确定每次传输使用的冗余版本；
根据每次传输使用的冗余版本确定每次传输的数据在所述编码块的位置；
根据所述每次传输的数据在所述编码块的位置获取每次传输的数据；
所述发送器具体用于：
将所述处理器获取的所述每次传输的数据发送给所述接收终端。
结合第五方面第三种可能的实现方式，在第七种可能的实现方式中，所述发送设备为UE，所述接收设备为基站；
所述处理器具体用于：
在预设时间间隔内连续接收所述基站的M条调度信息；
其中，所述M条调度信息为所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M之后向所述UE发送的调度信息，所述M大于1。
结合第五方面至第五方面第七种可能的实现方式中任一种，在第八种可能的实现方式中，所述发送终端与所述接收终端进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
结合第五方面第五种可能的实现方式，在第九种可能的实现方式中，所述处理器具体用于：
将所述目标TBS乘上N以得到目标TBS的N倍值，并将所述目标TBS 的N倍值进行取整以得到所述第一TBS；
其中，将所述目标TBS的N倍值进行取整包括向上取整、向下取整或者四舍五入取整中的任意一种取整方式；
所述目标TBS对应第一码率，所述第二TBS对应第二码率，所述第二码率为所述目标码率的N倍。
第六方面，提供了一种接收终端，其可包括：存储器、接收器和处理器，所述存储器、所述接收器和所述处理器连接；
所述存储器用于存储一组程序代码；
所述接收器和所述处理器用于调用所述存储器中存储的所述程序代码执行如下操作：
所述接收器，用于接收发送终端根据第二传输块大小TBS至少两次发送的同一个编码块的数据，所述至少两次发送的同一个编码块的数据为所述编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到；
所述处理器，用于将所述接收器接收到的所述编码块的不同位置的数据进行混合自动重传请求HARQ合并译码。
结合第六方面，在第一种可能的实现方式中，所述处理器还用于：
按照预设的反馈方式向所述发送终端备反馈所述编码块的数据的接收状态；
其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
其中，所述K为大于1并且不大于M的自然数。
结合第六方面或者第六方面第一种可能的实现方式，在第二种可能的实现方式中，所述接收终端为基站，所述发送终端为UE；
所述处理器还用于：
计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
结合第六方面第二种可能的实现方式，在第三种可能的实现方式中，所述处理器具体用于：
根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
结合第六方面第三种可能的实现方式，在第四种可能的实现方式中，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先定义的数据传输的码率，或者数据传输的MCS索引。
结合第六方面至第六方面第四种可能的实现方式中任一种，在第五种可能的实现方式中，所述接收终端与所述发送终端进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
第七方面，提供了一种数据传输的系统，其可包括：上述发送终端和上述接收终端。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的数据传输的方法的一流程示意图；
图2是上行数据传输的接收设备和发送设备的数据交互示意图；
图3是本发明实施例提供的上传数据传输的流程示意图；
图4是LTE时隙的结构示意图；
图5是接收设备进行编码块的数据进行合并译码的示意图；
图6为上行数据传输的自适应重传流程示意图；
图7是重传反馈时序一比较示意图；
图8是重传反馈时序另一比较示意图；
图9是本发明实施例提供的数据传输的方法的另一流程示意图；
图10是本发明实施例提供的数据传输的发送设备的结构示意图；
图11是本发明实施例提供的数据传输的接收设备的一结构示意图；
图12是本发明实施例提供的数据传输的接收设备的另一结构示意图；
图13是本发明实施例提供的数据传输的接收设备的另一结构示意图；
图14是本发明实施例提供的终端的一结构示意图；
图15是本发明实施例提供的终端的另一结构示意图；
图16是本发明实施例提供的数据传输的系统结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
具体实现中，本发明实施例中所描述数据传输的码率定义为需要传输的有用信息的比特数与空口可传输的数据的比特数的比值。在其他数据传输条件不变的情况下，数据传输的码率越高，传输链路的频谱效率就越高，数据传输的码率越低，传输链路的频率效率就越低。其中，码率小于1.0则表示需要传输的有用信息的比特数小于空口可传输的数据的比特数。由于数据传输中，为了保证接收设备对发送设备发送的数据的正确译码，发送设备传输给接收设备的数据需要包含一定的冗余数据，因此发送设备传输数据选择的码率将会小于1.0。其中，上述冗余数据可用于纠正传输数据在接收设备解调译码出现的错误，以更好地解调译码得到编码端传输的数据。若接收设备无法正确译码得到发送设备发送的数据，则需要发送设备重传数据。此外，当信道或者邻区干扰 存在不可预测的波动时，数据传输的码率就会降低以保证首次数据传输的正确概率，这将使得传输链路的频谱效率进一步降低。
为了避免频谱效率的损失，本发明实施例所描述的数据传输方法中，发送设备可选择高码率进行数据传输，选择高码率进行数据传输时可多次传输同一个编码块的数据，每次传输同一个编码块的不同位置的编码后比特，即，每次传输同一个编码块的不同位置的数据，直到接收设备正确译码后停止传输。在本发明实施例所描述的数据传输方法中，同一个编码块对应的每次数据传输的码率可以超过1.0，码率超过1.0则表示单次传输的空口可传输的数据大小小于需要传输的有用信息的比特数，单次传输的数据中不包括冗余数据，接收设备无法根据单次传输的数据进行正确译码。接收设备可将接收到的发送设备多次传输的数据进行HARQ合并后译码，不同编码后比特合并等效码率会小于1.0，等效码率越低，则包含的冗余信息就越多；反之亦然，因此可以纠错，从而得到发送设备发送的编码块的数据。由于错误的传输可由重传来保证，且放开了首次必须大概率正确传输的约束，码率选择可以较为激进，可以将不可预测的信道或者邻区干扰导致的频谱效率损失转化为同一个编码块传输次数的波动，避免了频谱效率的损失。
下面将结合图1至图16，对本发明实施例提供的数据传输的方法及装置进行具体描述。
参见图1，是本发明实施例提供的数据传输的方法的一流程示意图。本发明实施例提供的方法，包括步骤：
S101，发送设备获取第一传输块大小TBS。
在一些可行的实施方式中，上述第一传输块大小(Transport Block Size，TBS)对应的码率大于或者等于1。其中，上述发送设备可为基站，也可为UE。
具体实现中，LTE系统包含承载上行数据的PUSCH和承载下行数据的PDSCH，LTE的数据传输包括由PDSCH承载的下行数据的传输和由PUSCH承载的上行数据的传输。当数据传输为由PDSCH承载的下行数据的传输时，基站为数据传输的发送设备，UE为数据传输的接收设备。当数据传输为由PUSCH承载的上行数据的传输时，UE为数据传输的发送设备，基站为数据传输的接收设备。
在一些可行的实施方式中，当发送设备为基站，接收设备为UE时，基站 获取第一TBS时可根据预先定义的数据传输的码率，和调度的资源块(Resource Block，RB)数目计算第一TBS。其中，上述预先定义的数据传输的码率为大于或者等于1的码率。即，基站可预先定义一个大于或者等于1的码率，再根据预先定义的码率和调度的RB数目计算要使数据传输的码率为上述预先定义的码率，TBS需要多大。具体实现中，码率为需要传输的有用信息的比特数与空口可传输的数据的比特数的比值，其中，需要传输的有用信息的比特数由TBS决定，上述空口可传输的数据的比特数由RB数目决定，因此，由预先定义的码率和RB数目则可确定TBS的大小。
在一些可行的实施方式中，当发送设备为基站，接收设备为UE时，基站还可将根据数据传输的调制和编码方式(Modulation and Coding Scheme，MCS)和调度的RB数目确定的数据传输的码率进行放大，将小于1的码率放大为大于或者等于1的码率。具体实现中，基站可根据MCS索引和调度的RB数目选择数据传输的TBS。由于数据传输的每个TBS对应着一个码率，当空口可传输的比特数不变时，若TBS增大，则其对应的码率也对应增大。因此，基站选择的数据传输的TBS则等效于选择了数据传输的码率。
具体实现中，LTE的数据传输通过控制初传误块率(Initial Block Error Rate，IBLER)来约束MCS的选择。具体实现中，基站可根据信号与干扰噪声比(Signal to Interference plus Noise Ratio，SINR)或者信道质量指示(Channel Quality Indicator，CQI)选择MCS，进而可根据IBLER的目标值对选择的MCS进行调整。其中，IBLER的目标值可设定为10％。若当前数据传输的IBLER高于目标值，基站则可将根据SINR或者CQI选择的MCS调低以提高正确传输数据的概率，进而可降低IBLER的值使其接近目标值。若当前数据传输的IBLER低于目标值，基站则可将根据SINR或者CQI选择的MCS调高以提高错误传输的概率，进而可提高IBLER的值使其接近目标值。其中，基站将选择的MCS调高以提高错误传输的概率来提高IBLER的值，虽然传输错误概率提高，但是传输码率也提高，保障了系统的频谱效率。基站确定了MCS之后，则可根据MCS和调度的RB数目来选择数据传输的TBS。
具体实现中，在LTE中，MCS量化编码之后可得到MCS索引的取值范围，以PDSCH为例，初传MCS索引的取值范围为0至28。基站可根据选择的MCS确定其对应的MCS索引，进而可根据调度的RB数目从预先定义的 TBS查找表中查找得到上述MCS索引和RB数目对应的目标TBS。其中，上述预先定义的TBS查找表包括表1和表2。其中，表1为PDSCH的调制和TBS索引表格(参见《3GPP TS36.213 v12.2.0(2014-06)》中的table7.1.7.1-1)，表2为传输块大小表格(参见《3GPP TS36.213 v12.2.0(2014-06)》中的table7.1.7.2.1-1)中的部分数据表格。具体的，基站可根据MCS索引从表1中查找得到TBS索引。
表1
Figure PCTCN2016081416-appb-000001
Figure PCTCN2016081416-appb-000002
基站根据表1查找得到TBS索引之后，可根据查找得到的TBS索引和上述RB数目从表2中查找得到上述TBS索引和RB数目对应的目标TBS。
表2
Figure PCTCN2016081416-appb-000003
Figure PCTCN2016081416-appb-000004
例如，若基站选择的MCS索引为16，基站调度的RB数目为8，则可从表1中查找得到MCS索引对应的TBS索引15，进而可根据TBS索引和RB数目从表2中查找得到目标TBS为2472。
在一些可行的实施方式中，当数据传输为由PDSCH承载的下行数据的传输时，基站从上述表2中查找得到目标TBS之后，则可将目标TBS放大N倍以得到第一TBS。具体的，基站可将目标TBS乘上放大倍数N以得到目标TBS的N倍值，再将得到的目标TBS的N倍值进行取整以得到第一TBS。其中，上述目标TBS对应第一码率，第一TBS对应第二码率，第二码率为第一码率的N倍，N为使第二TBS对应的码率大于或者等于1的正实数。即，基站可根据目标TBS对应的码率确定将其放大为大于或者等于1的码率时需要放大的倍数，将该放大倍数设定为N，再根据放大倍数N将目标TBS放大，进而可将放大后的TBS进行取整得到第一TBS，使得第一TBS对应的第二码率不小于1。其中，在本发明实施例中，每阶MCS查找得到的目标TBS进行放大时放大倍数可以相同也可以不同，具体可根据应用需求确定，在此不做限制。
例如，基站根据上述实现方式查找得到目标TBS为2472，此时目标TBS为2472对应第一码率。其中，第一码率的大小可根据目标TBS和RB数目具体计算得到，在此将以第一码率为0.5作为示例说明。若将第一码率放大2倍则可使放大后的码率大于或者等于1(例如0.5*2＝1)，则可将目标TBS放大2倍得到目标TBS的2倍值，即4944，此时第一TBS即为4944。若此时放大之后的数据不为整数，则可进行取整得到整数，将取整后的数据设定为第一TBS。
进一步的，在一些可行的实施方式中，当数据传输为PUSCH承载的上行数据的传输时，基站作为接收设备，UE作为发送设备。基站与UE之间采用约定的查找规则查找数据传输的TBS，具体可约定为相同的查找规则。接收设备和发送设备采用相同的查找规则查找得到数据传输的TBS，可保证数据的发送和接收的顺利进行，保证数据的正确译码。基站和UE的数据传输可由基站控制，即，可由基站选择MCS或者预先定义数据传输的码率，并由基站确定 调度的RB数目等信息，进而可由基站下发调度信息给UE，触发UE进行数据传输。基站还可通过调度信息将预先定义的数据传输的码率和调度的RB数目发送给UE，以供UE进行第一TBS的获取。
在一些可行的实施方式中，当数据传输为PUSCH承载的上行数据的传输时，基站可将上述预先定义的码率或者选择的MCS索引，以及调度的RB数目等TBS查找信息通过调度信息发送给UE，以供UE根据上述TBS查找信息查找得到相应的TBS。
在一些可行的实施方式中，当上述调度信息中携带基站预先定义的数据传输的码率和调度的RB数目时，UE接收到上述调度信息之后，则可根据上述预先定义的码率和上述RB数目计算第一TBS。其中，UE根据码率和RB计算第一TBS的实现方式与基站计算第一TBS的实现方式相同，具体可参见上述基站根据预先定义的码率计算第一TBS的实现方式，在此不再赘述。
在一些可行的实施方式中，当上述调度信息中携带数据传输的MCS索引和调度的RB数目时，UE接收基站发送的调度信息之后，可根据上述MCS索引和RB数目从预先定义的TBS查找表中查找目标TBS，其中，上述TBS查找表包括上述表2和表3。其中，表3为PUSCH的调制、TBS索引和冗余版本表格(参见《3GPP TS36.213 v12.2.0(2014-06)》中的table8.6.1-1)。具体的，UE可根据MCS索引从上述表3中查找得到TBS索引，再根据查找得到的TBS索引和调度的RB数目从表2中查找得到目标TBS，其中，上述目标TBS的码率小于1。UE查找得到目标TBS之后，还可将目标TBS放大N倍以得到第一TBS，其中，上述N为使第一TBS的码率大于或者等于1的正实数。其中，上述UE根据MCS索引和RB数目查找得到目标TBS，并将目标TBS放大得到第一TBS的具体实现过程可参见上述基站的实现方式，在此不再赘述。
表3
Figure PCTCN2016081416-appb-000005
Figure PCTCN2016081416-appb-000006
例如，若基站选择的MCS索引为16，基站调度的RB数目为8，基站可将上述MCE索引和RB数目通过调度信息发送给UE，UE根据调度信息确定了上述MCS索引和RB数目之后，则可从表3中查找得到MCS索引对应的 TBS索引15，进而可根据TBS索引和RB数目从表2中查找得到目标TBS为2472。UE查找得到目标TBS为2472之后，也可按照上述实现方式进行放大以得到第一TBS为4944，具体可参见上述基站的实现方式，在此不再赘述。
需要说明的是，在本发明实施例中，基站或者UE将目标TBS进行放大并取整以得到第一TBS的实现过程中，也可将目标TBS对应的第一码率进行放大以得到第一码率的M1倍码率，该M1倍码率也可以小于1或者无限接近1，在此不做限制。其中，M1为小于N的正实数。当目标TBS放大得到其M1倍值的TBS时，上述目标TBS的M1倍值的TBS对应的码率虽然小于1，数据传输可按照单次传输译码的方式进行，但是码率依然是目标TBS对应的第一码率的M1倍，码率提高了，传输链路的频谱效率也将随着提高。当放大后的TBS的码率小于1时，发送设备和接收设备的数据传输依然可以按照现有的操作方式进行，即，接收设备可对发送设备初传的数据进行正确解码，在此不再赘述。
在一些可行的实施方式中，由于发送设备(下行数据传输时的基站或者上行数据传输时的UE)根据MCS索引和RB数目查找得到的目标TBS对应的单次传输的码率均小于1.0，若发送设备直接根据上述目标TBS进行数据发送，则无法得到更高的传输链路的频谱效率。若信道或者邻区干扰存储不可预测的波动，则将进一步降低码率以保证首次数据传输的正确概率，这将导致传输链路的频率效率的进一步降低。为了保证传输链路的频谱效率，则可将查找得到的目标TBS进行放大以得到更大的TBS，进而可根据放大后的TBS进行数据传输，提高数据传输的码率，进而保证传输链路的频谱效率。
S102，所述发送设备根据所述第一TBS在预先定义的TBS集合中获取第二TBS。
具体实现中，上述第二TBS与上述第一TBS差值的绝对值最小，或者上述第二TBS大于或者等于上述第一TBS并且上述第二TBS与上述第一TBS的差值最小，或者上述第二TBS小于或者等于上述第一TBS并且上述第二TBS与上述第一TBS的差值最小。
在一些可行的实施方式中，发送设备获取得到第一TBS之后，可根据上述第一TBS在预先定义的TBS集合中获取第二TBS，其中，上述预先定义的TBS集合为上述表2中所示的各个TBS组成的集合。若数据传输为下行数据 传输，则基站处理得到第一TBS之后，则可从上述表2中查找与上述第一TBS(即4944)最接近的TBS(如表2中的4968)，并将查找得到的TBS设定为第二TBS，进而可根据第二TBS进行数据传输。其中，上述与第一TBS最接近的TBS可包括以下至少一种：与上述第一TBS差值的绝对值最小，或者大于或者等于第一TBS并且与第一TBS的差值最小，或者小于或者等于第一TBS并且与第一TBS的差值最小等，具体可根据实际应用确定，在此不做限制。需要说明的是，上述第一TBS和第二TBS的标号(即第一和第二)仅是为了更好地区分和描述，不限制其具体内容，第一TBS和第二TBS分别是基站查找TBS的不同操作过程涉及到的TBS的取值。
若数据传输为上行数据传输，则UE也可按照上述实现方式查找得到第二TBS，在此不再赘述。
S103，所述发送设备根据所述第二TBS获取同一个编码块至少两个不同位置的数据，并分别发送给接收设备。
在一些可行的实施方式中，当第二TBS对应的码率大于1时，若数据传输是下行数据传输，则表示基站单次传输的空口可传输的数据大小小于需要传输的有用信息的比特数，单次传输的数据中不包括冗余数据，接收设备(即UE)无法根据单次传输的数据进行正确译码。基站需要对同一个编码块的数据进行多次传输，UE可将接收到的基站多次传输的数据进行HARQ合并后译码，不同编码后比特合并等效码率会小于1.0，等效码率越低，则包含的冗余信息就越多；反之亦然，因此可以纠错，从而得到基站发送的编码块的数据。若数据传输是上行数据传输，则表示UE单次传输的空口可传输的数据大小小于需要传输的有用信息的比特数，单次传输的数据中不包括冗余数据，接收设备(即基站)无法根据单次传输的数据进行正确译码。UE需要对同一个编码块的数据进行多次传输，基站可将接收到的UE多次传输的数据进行HARQ合并后译码，不同编码后比特合并等效码率会小于1.0，等效码率越低，则包含的冗余信息就越多；反之亦然，因此可以纠错，从而得到UE发送的编码块的数据。
在一些可行的实施方式中，当数据传输为下行数据传输时，基站可根据第二TBS和调度的数据块的数据的大小，确定按照上述第二TBS传输上述编码块给UE所需的传输次数，每次传输上述编码块不同的编码后比特。其中，上 述每次传输的上述编码块不同的编码后比特可通过不同的冗余版本进行传输，不同的冗余版本可携带不同的编码后比特数据。基站可根据上述编码块的数据的大小和上述确定的传输次数，其中，上述传输次数大于1。基站确定每次传输使用的冗余版本，再根据每次传输使用的冗余版本确定每次传输的数据在上述编码块中的位置。基站确定了每个冗余版本传输的数据在上述编码块中的位置之后，则可根据上述每个冗余版本传输的数据在上述编码块中的位置获取每次传输的数据，并按照上述冗余版本的排序顺序将获取得到的每次传输的数据发送给UE。UE接收到基站发送的多个冗余版本的数据之后，则可将多个冗余版本的数据进行HARQ合并译码，不同编码后比特合并等效码率会小于1.0，等效码率越低，则包含的冗余信息就越多；反之亦然，因此可以纠错，从而得到上述编码块的数据。
在一些可行的实施方式中，若数据传输为上行数据传输，则基站可根据上述第二TBS和调度的编码块的数据的大小，确定根据上述第二TBS调度上述编码块的数据所需的调度次数M。由于基站调度编码块数据时，UE也是按照上述第二TBS的大小进行数据传输的，第二TBS的码率大于1，UE单次传输的数据基站无法进行正确译码，因此，基站需要进行多次调度触发UE进行多次数据传输，因此，上述调度次数M大于1。
在一些可行的实施方式中，基站确定了调度上述编码块的数据所需的调度次数M之后，则可在预设时间间隔内连续向UE发送M条调度信息。其中，每次发送的调度信息均携带上述TBS的查找信息，即，上述调度信息中携带调度的RB数目和预先定义的数据传输的码率，或者上述调度信息中携带调度的RB数目和数据传输的MCS的索引等。其中，上述预设时间间隔可为基站发送第一条调度信息到接收到该调度信息对应的UE上传的数据之间的多个缩短传输间隔(Transmission Time Interval，TTI)，即，short TTI。如图2，图2是现有技术中上行数据传输的接收设备和发送设备的数据交互示意图。在现有实现方式的上行数据传输中，基站向UE发送一次调度信息，UE则向基站反馈一次上行数据，基站接收到UE发送的上行数据之后再下发下一个调度信息，UE再向基站反馈一次上行数据，如此循环直至所有数据传输完成。由于基站向UE发送调度信息到UE向基站反馈该调度信息对应的上行数据之间存在在一定的传输间隔，基站发送下一条调度信息需要等待若干个传输间隔，调度次 数越多，基站等待的时间越长，数据传输耗时长，传输效率低。
需要说明的是，基站向UE发送的M条调度信息中携带的RB数目可以相同也可不同，具体可根据实际应用需求确定，在此不做限制。基站向UE发送的每个调度信息中携带的RB数目决定了每个冗余版本发送多少数据，该RB数目可选择为使每个冗余版本发送的数据尽量接近每个冗余版本对应的编码块的位置上的所有有用数据。
本发明实施例所描述的实现方式，如图3，图3是本发明实施例提供的上传数据传输的流程示意图。基站可预先确定编码块的数据传输需要的调度次数，假设调度次数M为2，则基站可在发送第一条调度信息之后的连续的short TTI上发送M-1次(如图3，M-1则为2次中剩下的一次)调度信息，充分利用第一条调度信息的下发与其对应的上行数据的接收之间的时间间隔下发剩下的M-1条调度信息。其中，当基站作为接收设备，UE作为发送设备时，基站可根据其作为发送设备时的实现方式确定UE作为发送设备进行数据传输时的第二TBS，还可根据调度的编码块的数据的大小确定调度次数，进而可在预设时间内向UE发送多条调度信息。其中，上述基站作为接收设备确定UE进行数据传输时的第二TBS的具体实现方式可参加上述基站作为发送设备时的实现方式，在此不再赘述。UE可在预设时间间隔内连续接收基站的M条调度信息，进而可根据上述M条调度信息确定每条调度信息对应调度的数据。UE接收到第一条调度信息之后，则可按照上行数据反馈的时间上传数据给基站，进而可在第一次上传数据之后的连续时间间隔内依次上传上述M-1条调度信息中每条调度信息对应的上行数据，缩短了数据的上传间隔，提高了数据传输的效率。
需要说明的是，本发明实施例所描述的实现方式中，无论是上行数据传输还是下行数据传输，基站和UE之间进行数据传输采用的帧结构为上述short TTI的帧结构。如图4，图4是LTE时隙的结构示意图。LTE非缩短TTI中，一个子帧的时长为1毫秒(ms)，每个子帧又分为两个0.5ms的时隙(slot)，每个slot又包含7个符号(其中上行数据传输对应的符号是单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)符号，下行数据传输对应的符号是正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)符号)。在LTE的基础上，本发明实施例可采用Short TTI 的帧结构进行数据传输，即，一个TTI中可仅包含1、2、3、4或者7个SC-FDMA或者OFDMA符号(非缩短TTI是每个TTI包含14个SC-FDMA或者OFDMA符号)。在本发明实施例中，TBS的放大等效为码率的提升，码率提升后使得编码块的数据需要多次传输，增加了一个编码块的传输时延。采用short TTI的帧结构进行数据传输可利用short TTI本身的TTI间隔短的特点，解决提升码率后带来的传输时延的增加的问题，保证提升码率后带来的传输时延与码率提升之前的传输时延相近，提高数据传输的效率。
需要说明的是，本发明实施例所描述的实现方式中，基站也可在short TTI的帧结构上按照如图2所示的数据传输方式进行M次调度信息的发送，在此不做限制。采用short TTI的帧结构进行数据传输，即使基站采用图2所示的数据传输方式也可在提升码率的同时降低数据传输的增量，保证数据传输的传输时延与码率提升之前相近。
在一些可行的实施方式中，若数据传输为上行数据传输，基站将调度信息发送给UE之后，UE则可向基站发送数据。基站接收到UE上传的数据之后，则可将UE多次上传的同一个编码块的数据进行HARQ合并译码。如图5，图5是接收设备将发送设备发送的数据进行合并译码的示意图。假设，基站根据编码块的数据的大小和第二TBS确定了根据上述第二TBS调度上述编码块的数据所需的调度次数为4次，基站则可向UE发送4条调度信息。UE接收到基站发送的调度信息之后可采用8个冗余版本(包括RV0至RV7)向基站上传数据，具体可通过初传、第一次重传、第二次重传和第三次重传向基站上传4个冗余版本数据。基站接收到上述4个冗余版本数据之后，则可进行编码块的数据的合并译码，得到编码块数据。其中，上述编码块的数据具体可为图5中所示的信息位数据，图5中所示的校验位数据为冗余比特，可用于合并译码的纠错。接收设备(上行数据传输时的基站和下行传输时的UE)通过编码块的数据的合并译码解决了发送设备(上行数据传输时的UE和下行数据传输时的基站)采用高码率进行数据传输时单次传输无法正确解调译码的问题，接收设备通过合并译码保证发送设备采用高码率进行数据传输的数据也能被正确解调译码，进而在保证数据的正确传输的同时提高了码率。若数据传输的其他条件不变，则码率的提升也提高了传输链路的频谱效率。
在一些可行的实施方式中，如图6，图6为上行数据传输的自适应重传流 程示意图。上行数据传输时，接收设备(即基站)接收到发送设备(即UE)上传的数据之后，会对数据的接收状态进行反馈和重传调度。基站向UE发送调度信息，UE接收到调度信息之后向基站上传上行数据。基站接收到数据之后向UE反馈上行数据的解调译码状态，并根据解调译码状态向UE发送重传调度信息。UE接收到重传调度信息之后会重传上行数据，如此循环，直至上行数据解调译码成功。具体的，基站接收到UE上传的数据之后，可按照预设的反馈方式向UE反馈编码块的数据的接收状态。其中，上述接收状态可包括ACK或者NACK，分别表示数据的正确解调译码和未正确解调译码等。上述预设的反馈方式可包括：接收一次数据进行一次反馈，或者接收K次数据进行一次反馈等，其中K为大于1并且不大于M的自然数。即，基站可在每次接收到UE反馈的数据之后反馈数据的接收状态，也可在任意多次接收到UE反馈的数据之后反馈数据的接收状态，也可在接收完所有次数的UE反馈的数据之后反馈数据的接收状态，在此不做限制。其中，基站每次接收到UE反馈的数据之后反馈数据的接收状态的具体实现方式可3GPP的标准协议中所描述的实现方式，在此不再赘述。参见图7，图7是重传反馈时序一比较示意图。在本发明实施例中，假设基站与UE预先约定的反馈方式为接收到3次数据后反馈一次，即，不反馈次数为2次，则基站可在接收到UE上传的3次数据之后反馈数据的接收状态。参见图8，图8是重传反馈时序另一比较示意图。当调度资源不变时，若基站与UE约定的反馈方式为接收到3次数据后反馈一次，基站也可在第一次发送UE初传数据的调度信息之后，不再发送UE初传数据后面的两次上传数据的调度信息，进而可减少控制信令的开销。
需要说明的是，在同一个编码块的数据的传输中，接收设备(即上行数据传输中的基站或者下行数据传输中的UE)接收发送设备(即上行数据传输中的UE和下行数据传输中的基站)发送的数据时，在多次接收数据的过程中可包含多种反馈方式。即，接收设备接收同一个编码块的数据时，可同时采用接收一次数据反馈一次和接收多次数据反馈一次数据的方式，不同的反馈方式可在多次接收同一个编码块的数据的过程中使用。例如，基站接收UE多次发送的同一个编码块的数据时，可在首次接收数据和第二次接收数据时，采用接收一次数据反馈一次数据接收状态的反馈方式，还可在第三次接收数据和第四次接收数据时，采用接收2次数据反馈一次数据接收状态的反馈方式等方式进行 数据接收的反馈。相应的，基站可按照与UE约定的反馈方式发送编码块数据的调度信息，可同时采用逐次下发调度信息和多次调度信息连续下发的方式进行，不同的调度信息的下发方式可在调度同一个编码块的数据的过程中使用，在此不做限制。例如，基站可在每次接收到UE发送的数据之后下发下一次调度的调度信息，也可在接收到UE发送的数据之前连续下发多次调度的调度信息。
在一些可行的实施方式中，若数据传输为下行数据传输，则UE接收基站发送的编码块数据之后也可按照上述方式进行数据的接收状态的反馈，具体可参见上述实施例，在此不再赘述。
需要说明的是，在本发明实施例中，发送设备(上行数据传输的UE或者下行数据传输的基站)通过多个冗余版本多次发送同一个编码块的数据时，同一个编码块的不同冗余版本的数据发送的TTI可根据实际应用确定，可为连续的多个TTI，也可为不连续的多个TTI，操作灵活，适应性高。
在本发明实施例中，发送设备可在数据传输过程中获取码率大于或者等于1的TBS，并通过获取的码率大于或者等于1的TBS进行同一个编码块的不同位置的数据的多次传输给接收设备，进而可通过接收设备将发送设备多次传输的同一个编码块的数据的HARQ合并译码来保证高码率的数据传输状态下数据的正确解调译码。发送设备通过高码率的TBS进行数据传输，接收设备通过数据的HARQ合并译码来保证高码率传输的数据的正确接收译码，获取时间分集增益和编码增益，保证编码块数据的传输质量，提升数据系统的频谱效率。
参见图9，是本发明实施例提供的数据传输的方法的另一流程示意图。本发明实施例所描述的方法，包括步骤：
S201，接收设备接收发送设备根据第二传输块大小TBS至少两次发送的同一个编码块的数据。
其中，所述至少两次发送的同一个编码块的数据为所述编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到。
S202，所述接收设备将接收到的所述编码块的不同位置的数据进行混合自 动重传请求HARQ合并译码。
在一些可行的实施方式中，，所述接收设备接收发送设备根据第二TBS至少两次发送的同一个编码块的数据之后，所述方法还包括：
所述接收设备按照预设的反馈方式向所述发送设备反馈所述编码块的数据的接收状态；
其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
其中，所述K为大于1并且不大于M的自然数。
在一些可行的实施方式中，所述接收设备为基站，所述发送设备为UE；
所述接收设备接收发送设备根据第二TBS至少两次发送的同一个编码块的数据之前，所述方法还包括：
所述基站计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
在一些可行的实施方式中，所述基站计算第一TBS，包括：
所述基站根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
所述基站根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
在一些可行的实施方式中，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先 定义的数据传输的码率，或者数据传输的MCS索引。
在一些可行的实施方式中，所述接收设备与所述发送设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
具体实现中，接收设备在上行数据传输和下行数据传输中执行的实现方式可参见上述实施例中各个步骤所描述的实现方式，在此不再赘述。
在本发明实施例中，接收设备可接收发送设备根据高码率多次传输的同一个编码块的不同位置的数据，进而可通过将多次传输的同一个编码块的数据的HARQ合并译码来保证高码率的数据传输状态下数据的正确解调译码，获取时间分集增益和编码增益，保证编码块数据的传输质量，提升数据系统的频谱效率。
参见图10，是本发明实施例提供的数据传输的发送设备的结构示意图。本发明实施例中所描述的发送设备，包括：
第一获取模块11，用于获取第一传输块大小TBS，其中，所述第一TBS对应的码率大于或者等于1。
第二获取模块12，用于根据所述第一获取模块11获取的所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小。
发送模块13，用于根据所述第二获取模块12获取的所述第二TBS获取同一个编码块至少两个不同位置的数据，并分别发送给接收设备，用于所述接收设备将所述至少两个不同位置的数据进行混合自动重传请求HARQ合并译码。
在一些可行的实施方式中，所述发送设备为基站，所述接收设备为用户设备UE；
所述第一获取模块11具体用于：
根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS；
其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率。
在一些可行的实施方式中，所述发送设备为基站，所述接收设备为UE；
所述第一获取模块11具体用于：
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
在一些可行的实施方式中，所述发送设备为UE，所述接收设备为基站；
所述第一获取模块11具体用于：
接收所述基站的调度信息，根据所述调度信息获取第一TBS。
在一些可行的实施方式中，所述调度信息中携带预先定义的数据传输的码率和调度的RB数目；
所述第一获取模块11具体用于：
根据所述预先定义的码率和所述RB数目计算第一TBS。
在一些可行的实施方式中，所述调度信息中携带数据传输的MCS索引和调度的RB数目；
所述第一获取模块11具体用于：
根据MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
在一些可行的实施方式中，所述发送模块13具体用于：
根据所述第二TBS和调度的所述编码块的数据的大小，确定根据所述第二TBS传输所述编码块给所述接收设备所需的传输次数，所述传输次数大于1；
根据所述编码块的数据的大小和所述传输次数，确定每次传输使用的冗余版本；
根据每次传输使用的冗余版本确定每次传输的数据在所述编码块的位置；
根据所述每次传输的数据在所述编码块的位置获取每次传输的数据；
将所述每次传输的数据发送给所述接收设备。
在一些可行的实施方式中，所述发送设备为UE，所述接收设备为基站；
所述第一获取模块11具体用于：
在预设时间间隔内连续接收所述基站的M条调度信息；
其中，所述M条调度信息为所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M之后向所述UE发送的调度信息，所述M大于1。
在一些可行的实施方式中，所述发送设备与所述接收设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
具体实现中，上述发送设备具体可为上行数据传输中的UE，或者下行数据传输中的基站。上述发送设备可通过其包含的各个模块执行相应的实现方式，具体实现方式可参见上述实施例中各个步骤所描述的实现方式，在此不再赘述。
在本发明实施例中，发送设备可在数据传输过程中获取码率大于或者等于1的TBS，并通过获取的码率大于或者等于1的TBS进行同一个编码块的不同位置的数据的多次传输给接收设备，进而可通过接收设备将发送设备多次传输的同一个编码块的数据的HARQ合并译码来保证高码率的数据传输状态下数据的正确解调译码。发送设备通过高码率的TBS进行数据传输，接收设备通过数据的HARQ合并译码来保证高码率传输的数据的正确接收译码，获取时间分集增益和编码增益，保证编码块数据的传输质量，提升数据系统的频谱效率。
参见图11，是本发明实施例提供的数据传输的接收设备的一结构示意图。本发明实施例中所描述的接收设备，包括：
接收模块21，用于接收发送设备根据第二传输块大小TBS至少两次发送的同一个编码块的数据，所述至少两次发送的同一个编码块的数据为所述编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到。
译码模块22，用于将所述接收模块接收到的所述编码块的不同位置的数据进行混合自动重传请求HARQ合并译码。
在一些可行的实施方式中，参见图12，是本发明实施例提供的接收设备的另一结构示意图。上述接收设备还包括：
反馈模块23，用于按照预设的反馈方式向所述发送设备反馈所述接收模块接收所述编码块的数据的接收状态；
其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
其中，所述K为大于1并且不大于M的自然数。
在一些可行的实施方式中，参见图13，是本发明实施例提供的接收设备的另一结构示意图。所述接收设备为基站，所述发送设备为UE；
所述接收设备还包括：
调度模块24，用于计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
在一些可行的实施方式中，所述调度模块24具体用于：
根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
在一些可行的实施方式中，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先定义的数据传输的码率，或者数据传输的MCS索引。
在一些可行的实施方式中，所述接收设备与所述发送设备进行数据传输采 用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
具体实现中，上述接收设备具体可为上行数据传输中的基站，或者下行数据传输中的UE。上述接收设备可通过其包含的各个模块执行相应的实现方式，具体实现方式可参见上述实施例中各个步骤所描述的实现方式，在此不再赘述。
在本发明实施例中，接收设备可接收发送设备根据高码率多次传输的同一个编码块的不同位置的数据，进而可通过将多次传输的同一个编码块的数据的HARQ合并译码来保证高码率的数据传输状态下数据的正确解调译码，获取时间分集增益和编码增益，保证编码块数据的传输质量，提升数据系统的频谱效率。
参见图14，是本发明实施例提供的发送终端的实施例结构示意图。本发明实施例中所描述的发送终端包括：存储器1001和处理器1002、发送器1003，所述存储器1001、所述发送器1003和所述处理器1002连接；
所述存储器1001用于存储一组程序代码；
所述处理器1002和所述发送器1003用于调用所述存储器中存储的所述程序代码执行如下操作：
所述处理器1002，用于获取第一传输块大小TBS，其中，所述第一TBS对应的码率大于或者等于1。
所述处理器1002，还用于根据所述第一TBS在所述存储器中存储的预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小。
所述处理器1002，还用于根据所述第二TBS获取同一个编码块至少两个不同位置的数据。
所述发送器1003，用于将所述处理器获取的同一个编码块至少两个不同位置的数据分别发送给接收终端，用于所述接收终端将所述至少两个不同位置 的数据进行混合自动重传请求HARQ合并译码。
在一些可行的实施方式中，所述发送终端为基站，所述接收终端为用户设备UE；
所述处理器1002具体用于：
根据所述存储器中存储的预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS；
其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率。
在一些可行的实施方式中，所述发送终端为基站，所述接收终端为UE；
所述处理器1002具体用于：
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
在一些可行的实施方式中，所述发送终端为UE，所述接收终端为基站；
所述处理器1002具体用于：
接收所述基站的调度信息，根据所述调度信息获取第一TBS。
在一些可行的实施方式中，所述调度信息中携带预先定义的数据传输的码率和调度的RB数目；
所述处理器1002具体用于：
根据所述预先定义的码率和所述RB数目计算第一TBS。
在一些可行的实施方式中，所述调度信息中携带数据传输的MCS索引和调度的RB数目；
所述处理器1002具体用于：
根据MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
在一些可行的实施方式中，所述处理器1002具体用于：
根据所述第二TBS和调度的所述编码块的数据的大小，确定根据所述第二TBS传输所述编码块给所述接收终端所需的传输次数，所述传输次数大于 1；
根据所述编码块的数据的大小和所述传输次数，确定每次传输使用的冗余版本；
根据每次传输使用的冗余版本确定每次传输的数据在所述编码块的位置；
根据所述每次传输的数据在所述编码块的位置获取每次传输的数据；
所述发送器具体用于：
将所述处理器获取的所述每次传输的数据发送给所述接收终端。
在一些可行的实施方式中，所述发送设备为UE，所述接收设备为基站；
所述处理器1002具体用于：
在预设时间间隔内连续接收所述基站的M条调度信息；
其中，所述M条调度信息为所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M之后向所述UE发送的调度信息，所述M大于1。
在一些可行的实施方式中，所述发送终端与所述接收终端进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
具体实现中，上述发送终端具体可为上行数据传输中的UE，或者下行数据传输中的基站。上述发送终端可通过其包含的各个模块执行相应的实现方式，具体实现方式可参见上述实施例中各个步骤所描述的实现方式，在此不再赘述。
参见图15，是本发明实施例提供的接收终端的实施例结构示意图。本发明实施例中所描述的接收终端，包括：存储器2001、接收器2002和处理器2003，所述存储器2001、所述接收器2002和所述处理器2003连接；
所述存储器2001用于存储一组程序代码；
所述接收器2002和所述处理器2003用于调用所述存储器中存储的所述程序代码执行如下操作：
所述接收器2002，用于接收发送终端根据第二传输块大小TBS至少两次发送的同一个编码块的数据，所述至少两次发送的同一个编码块的数据为所述 编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到。
所述处理器2003，用于将所述接收器接收到的所述编码块的不同位置的数据进行混合自动重传请求HARQ合并译码。
在一些可行的实施方式中，所述处理器2003还用于：
按照预设的反馈方式向所述发送终端备反馈所述编码块的数据的接收状态；
其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
其中，所述K为大于1并且不大于M的自然数。
在一些可行的实施方式中，所述接收终端为基站，所述发送终端为UE；
所述处理器2003还用于：
计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
在一些可行的实施方式中，所述处理器2003具体用于：
根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
在一些可行的实施方式中，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先 定义的数据传输的码率，或者数据传输的MCS索引。
在一些可行的实施方式中，所述接收终端与所述发送终端进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
具体实现中，上述接收终端具体可为上行数据传输中的基站，或者下行数据传输中的UE。上述接收终端可通过其包含的各个模块执行相应的实现方式，具体实现方式可参见上述实施例中各个步骤所描述的实现方式，在此不再赘述。
参见图16，是本发明实施例提供的数据传输的系统，可包括：本发明实施例中所描述的发送终端1000和接收终端2000。其中，上述发送终端1000和接收终端2000进行数据传输的实现方式可参见上述实施例中各个步骤所描述的实现方式，在此不再赘述。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (31)

  1. 一种数据传输的方法，其特征在于，包括：
    发送设备获取第一传输块大小TBS，其中，所述第一TBS对应的码率大于或者等于1；
    所述发送设备根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
    所述发送设备根据所述第二TBS获取同一个编码块至少两个不同位置的数据，并分别发送给接收设备，用于所述接收设备将所述至少两个不同位置的数据进行混合自动重传请求HARQ合并译码。
  2. 如权利要求1所述的方法，其特征在于，所述发送设备为基站，所述接收设备为用户设备UE；
    所述发送设备获取第一TBS，包括：
    所述基站根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS；
    其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率。
  3. 如权利要求1所述的方法，其特征在于，所述发送设备为基站，所述接收设备为UE；
    所述发送设备获取第一TBS，包括：
    所述基站根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
    所述基站将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
  4. 如权利要求1所述的方法，其特征在于，所述发送设备为UE，所述接 收设备为基站；
    所述发送设备获取第一TBS，包括：
    所述UE接收所述基站的调度信息；
    所述UE根据所述调度信息获取第一TBS。
  5. 如权利要求4所述的方法，其特征在于，所述调度信息中携带预先定义的数据传输的码率和调度的RB数目；
    所述UE根据所述调度信息获取第一TBS，包括：
    所述UE根据所述预先定义的码率和所述RB数目计算第一TBS。
  6. 如权利要求4所述的方法，其特征在于，所述调度信息中携带数据传输的MCS索引和调度的RB数目；
    所述UE根据所述调度信息获取第一TBS，包括：
    所述UE根据MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
    所述UE将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
  7. 如权利要求1至6任一项所述的方法，其特征在于，所述发送设备根据所述第二TBS获取编码块至少两个不同位置的数据，并分别发送给接收设备，包括：
    所述发送设备根据所述第二TBS和调度的所述编码块的数据的大小，确定根据所述第二TBS传输所述编码块给所述接收设备所需的传输次数，所述传输次数大于1；
    所述发送设备根据所述编码块的数据的大小和所述传输次数，确定每次传输使用的冗余版本；
    所述发送设备根据每次传输使用的冗余版本确定每次传输的数据在所述编码块的位置；
    所述发送设备根据所述每次传输的数据在所述编码块的位置获取每次传输的数据；
    所述发送设备将所述每次传输的数据发送给所述接收设备。
  8. 如权利要求4所述的方法，其特征在于，所述发送设备为UE，所述接收设备为基站；
    所述UE接收所述基站的调度信息，包括：
    所述UE在预设时间间隔内连续接收所述基站的M条调度信息；
    其中，所述M条调度信息为所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M之后向所述UE发送的调度信息，所述M大于1。
  9. 如权利要求1-8任一项所述的方法，其特征在于，所述发送设备与所述接收设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
    其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
  10. 一种数据传输的方法，其特征在于，包括：
    接收设备接收发送设备根据第二传输块大小TBS至少两次发送的同一个编码块的数据，所述至少两次发送的同一个编码块的数据为所述编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到；
    所述接收设备将接收到的所述编码块的不同位置的数据进行混合自动重传请求HARQ合并译码。
  11. 如权利要求10所述的方法，其特征在于，所述接收设备接收发送设备根据第二TBS至少两次发送的同一个编码块的数据之后，所述方法还包括：
    所述接收设备按照预设的反馈方式向所述发送设备反馈所述编码块的数据的接收状态；
    其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
    其中，所述K为大于1并且不大于M的自然数。
  12. 如权利要求10或12所述的方法，其特征在于，所述接收设备为基站，所述发送设备为UE；
    所述接收设备接收发送设备根据第二TBS至少两次发送的同一个编码块的数据之前，所述方法还包括：
    所述基站计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
    所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
  13. 如权利要求12所述的方法，其特征在于，所述基站计算第一TBS，包括：
    所述基站根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
    所述基站根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
  14. 如权利要求13所述的方法，其特征在于，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
    其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先定义的数据传输的码率，或者数据传输的MCS索引。
  15. 如权利要求10-14任一项所述的方法，其特征在于，所述接收设备与所述发送设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
    其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
  16. 一种数据传输的发送设备，其特征在于，包括：
    第一获取模块，用于获取第一传输块大小TBS，其中，所述第一TBS对应的码率大于或者等于1；
    第二获取模块，用于根据所述第一获取模块获取的所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于或者等于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
    发送模块，用于根据所述第二获取模块获取的所述第二TBS获取同一个编码块至少两个不同位置的数据，并分别发送给接收设备，用于所述接收设备将所述至少两个不同位置的数据进行混合自动重传请求HARQ合并译码。
  17. 如权利要求16所述的发送设备，其特征在于，所述发送设备为基站，所述接收设备为用户设备UE；
    所述第一获取模块具体用于：
    根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS；
    其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率。
  18. 如权利要求16所述的发送设备，其特征在于，所述发送设备为基站，所述接收设备为UE；
    所述第一获取模块具体用于：
    根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
    将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一 TBS对应的码率大于或者等于1的正实数。
  19. 如权利要求16所述的发送设备，其特征在于，所述发送设备为UE，所述接收设备为基站；
    所述第一获取模块具体用于：
    接收所述基站的调度信息，根据所述调度信息获取第一TBS。
  20. 如权利要求19所述的发送设备，其特征在于，所述调度信息中携带预先定义的数据传输的码率和调度的RB数目；
    所述第一获取模块具体用于：
    根据所述预先定义的码率和所述RB数目计算第一TBS。
  21. 如权利要求19所述的发送设备，其特征在于，所述调度信息中携带数据传输的MCS索引和调度的RB数目；
    所述第一获取模块具体用于：
    根据MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，所述目标TBS对应的码率小于1；
    将所述目标TBS放大N倍以得到第一TBS，其中，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
  22. 如权利要求16-21任一项所述的发送设备，其特征在于，所述发送模块具体用于：
    根据所述第二TBS和调度的所述编码块的数据的大小，确定根据所述第二TBS传输所述编码块给所述接收设备所需的传输次数，所述传输次数大于1；
    根据所述编码块的数据的大小和所述传输次数，确定每次传输使用的冗余版本；
    根据每次传输使用的冗余版本确定每次传输的数据在所述编码块的位置；
    根据所述每次传输的数据在所述编码块的位置获取每次传输的数据；
    将所述每次传输的数据发送给所述接收设备。
  23. 如权利要求19所述的发送设备，其特征在于，所述发送设备为UE，所述接收设备为基站；
    所述第一获取模块具体用于：
    在预设时间间隔内连续接收所述基站的M条调度信息；
    其中，所述M条调度信息为所述基站根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M之后向所述UE发送的调度信息，所述M大于1。
  24. 如权利要求16-23任一项所述的发送设备，其特征在于，所述发送设备与所述接收设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
    其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、4以及7的任一种。
  25. 一种数据传输的接收设备，其特征在于，包括：
    接收模块，用于接收发送设备根据第二传输块大小TBS至少两次发送的同一个编码块的数据，所述至少两次发送的同一个编码块的数据为所述编码块的不同位置的数据，所述第二TBS在预先定义的TBS集合中，根据对应码率大于或者等于1的第一TBS获取得到；
    译码模块，用于将所述接收模块接收到的所述编码块的不同位置的数据进行混合自动重传请求HARQ合并译码。
  26. 如权利要求25所述的接收设备，其特征在于，所述接收设备还包括：
    反馈模块，用于按照预设的反馈方式向所述发送设备反馈所述接收模块接收所述编码块的数据的接收状态；
    其中，所述反馈方式至少包括以下一种：每接收一次数据进行一次反馈，或者，每接收K次数据进行一次反馈；
    其中，所述K为大于1并且不大于M的自然数。
  27. 如权利要求25或26所述的接收设备，其特征在于，所述接收设备为基站，所述发送设备为UE；
    所述接收设备还包括：
    调度模块，用于计算第一TBS，并根据所述第一TBS在预先定义的TBS集合中获取第二TBS，其中，所述第二TBS与所述第一TBS差值的绝对值最小，或者所述第二TBS大于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小，或者所述第二TBS小于所述第一TBS并且所述第二TBS与所述第一TBS的差值最小；
    根据所述第二TBS和调度的所述编码块的数据的大小确定根据所述第二TBS调度所述编码块的数据所需的调度次数M，并在预设时间间隔内连续向所述UE发送M条调度信息。
  28. 如权利要求27所述的接收设备，其特征在于，所述调度模块具体用于：
    根据预先定义的数据传输的码率，和调度的资源块RB数目计算第一TBS，其中，所述预先定义的数据传输的码率为所述第一TBS对应的码率；或者
    根据数据传输的调制和编码方式MCS索引和调度的RB数目，从预先定义的TBS查找表中查找目标TBS，并将所述目标TBS放大N倍以得到第一TBS，其中，所述目标TBS对应的码率小于1，所述N为使所述第一TBS对应的码率大于或者等于1的正实数。
  29. 如权利要求28所述的接收设备，其特征在于，所述调度信息用于触发所述UE向所述基站发送所述编码块的数据；
    其中，所述调度信息中携带调度的RB数目以及以下至少一种信息：预先定义的数据传输的码率，或者数据传输的MCS索引。
  30. 如权利要求25-29任一项所述的接收设备，其特征在于，所述接收设备与所述发送设备进行数据传输采用的帧结构为具有缩短传输间隔short TTI的帧结构；
    其中，所述short TTI的帧结构中每个TTI包含的符号的数目包括1、2、3、 4以及7的任一种。
  31. 一种数据传输的系统，其特征在于，包括：如权利要求16-24任一项所述的发送设备，以及如权利要求25-30任一项所述的接收设备。
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