WO2021036736A1 - 数据传输方法、用户终端及计算机可读存储介质 - Google Patents

数据传输方法、用户终端及计算机可读存储介质 Download PDF

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Publication number
WO2021036736A1
WO2021036736A1 PCT/CN2020/107623 CN2020107623W WO2021036736A1 WO 2021036736 A1 WO2021036736 A1 WO 2021036736A1 CN 2020107623 W CN2020107623 W CN 2020107623W WO 2021036736 A1 WO2021036736 A1 WO 2021036736A1
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Prior art keywords
data
response message
cue
segmented
bits
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French (fr)
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刘萌萌
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • 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
    • H04L1/1607—Details of the supervisory signal
    • 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
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK

Definitions

  • the present invention relates to the field of communication technology, in particular to a data transmission method, a user terminal and a computer-readable storage medium.
  • UE User Equipment
  • the network can construct a user equipment cooperation group (UE cooperation group) according to criteria such as service requirements and channel status.
  • a user equipment cooperative group includes at least one cooperative UE (Cooperative UE, CUE) and one target UE (Target UE, TUE).
  • user cooperation is divided into two stages: the first stage, the base station sends data packets to the user equipment cooperation group; the second stage, the CUE in the user equipment cooperation group forwards the data packets received from the base station to the TUE.
  • the first stage is on the downlink, and the second stage is on the sidelink.
  • the TUE After the TUE receives the data packet, if it is successfully decoded, it will feed back an Acknowledgement (ACK) message; otherwise, it will feed back a Negative Acknowledgement (NACK) message.
  • ACK Acknowledgement
  • NACK Negative Acknowledgement
  • the existing method of feeding back ACK/NACK messages is only applicable to the case where the user equipment cooperative group contains only one TUE and one CUE.
  • the user equipment cooperative group contains multiple CUEs and one TUE at the same time, how to perform ACK /NACK message feedback, currently unresolved.
  • the problem to be solved by the present invention is how to perform ACK/NACK message feedback when multiple CUEs and one TUE are included in the user equipment cooperative group at the same time.
  • an embodiment of the present invention provides a data transmission method, the method includes: when receiving the first segmented data forwarded by the CUE, decoding the first segmented data; the first segmented data , Is any part of the segmented data obtained by the base station segmenting the original data; there are more than two CUEs forwarding the segmented data; based on the decoding result, a response message is fed back to the CUE, and the CUE will receive The received response message is forwarded to the base station.
  • the feeding back a response message to the CUE based on the decoding result includes: feeding back a response message to the CUE forwarding the first segmented data based on the decoding result of the first segmented data.
  • the feeding back a response message to the CUE based on the decoding result includes: feeding back the same response message to the CUE that forwards each of the divided data based on the decoding result of all the segmented data corresponding to the original data.
  • the response message is used to feed back whether the original data is successfully received.
  • the response message is used to feed back whether each of the segmented data is successfully received.
  • the response message is used to feed back whether the original data is successfully received, and whether each of the segmented data is successfully received.
  • M bits are used to feed back whether each of the divided data is successfully received; wherein the value of M is the same as the number of divided data, and the value of each bit in the M bits is the same as that of the divided data.
  • M bits are used to feed back whether each of the divided data is successfully received; wherein the value of M is the same as the number of divided data, and the value of each bit in the M bits is the same as that of the divided data.
  • the order of the bits in the M bits is sorted according to the identity identification number of the CUE sending the corresponding segmented data or the serial number of the corresponding segmented data.
  • K bits are used to feed back whether each of the divided data is successfully received; wherein the value of K is the same as the number of non-repetitive divided data in the divided data, and each bit of the K bits The value of is in a one-to-one correspondence with the decoding result of the non-overlapping segmented data.
  • the order of each bit in the K bits is sorted according to the number of the corresponding divided data.
  • 1 bit is used to feed back whether the original data is successfully received.
  • the CUE forwarding the received response message to the base station includes: the CUE pre-designated by the base station forwards the received response message to the base station.
  • the CUE forwarding the received response message to the base station includes: each CUE that has received the response message forwards the received response message to the base station.
  • the method further includes: judging whether the received data is segmentation data based on physical layer signaling.
  • An embodiment of the present invention also provides a user terminal, the user terminal comprising: a decoding unit, adapted to decode the first divided data when the first divided data forwarded by the CUE is received; the first divided data Data is any part of the divided data obtained by the base station dividing the original data; there are more than two CUEs that forward the divided data; the response message feedback unit is adapted to feed back a response message to the CUE based on the decoding result , The CUE forwards the received response message to the base station.
  • the response message feedback unit is adapted to feed back a response message to the CUE forwarding the first segmented data based on the decoding result of the first segmented data.
  • the response message feedback unit is adapted to feed back the same response message to the CUE that forwards each of the segmented data based on the decoding results of all the segmented data corresponding to the original data.
  • the response message is used to feed back whether the original data is successfully received.
  • the response message is used to feed back whether each of the segmented data is successfully received.
  • the response message is used to feed back whether the original data is successfully received, and whether each of the segmented data is successfully received.
  • the number of bits used to feed back whether each of the segmented data is successfully received is M bits; wherein, the value of M is equal to the value of the segmented data.
  • the number is the same, and the value of each bit in the M bits corresponds to the decoding result of the divided data in a one-to-one correspondence.
  • the order of the bits in the M bits is sorted according to the identity identification number of the CUE sending the corresponding segmented data or the serial number of the corresponding segmented data.
  • the number of bits used to feed back whether each of the segmented data is successfully received is K bits; wherein, the value of K is the same as that of the segmented data.
  • the number of non-repeated segmented data is the same, and the value of each bit in the K bits corresponds to the decoding result of the non-repeated segmented data in a one-to-one correspondence.
  • the order of each bit in the K bits is sorted according to the number of the corresponding divided data.
  • the number of bits used to feed back whether the original data is successfully received is 1 bit.
  • the embodiment of the present invention also provides a computer-readable storage medium having computer instructions stored thereon, and the computer instructions execute the steps of any one of the above-mentioned methods when the computer instructions are run.
  • An embodiment of the present invention also provides a user terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes any of the above when the computer instructions are executed. The steps of the described method.
  • the TUE decodes the split data and feeds back a response message to the CUE, and then the CUE forwards the received response message to the base station, thereby realizing the user equipment
  • the cooperative group includes multiple CUEs and one TUE at the same time, ACK/NACK message feedback.
  • Figure 1 is a flowchart of a data transmission method in an embodiment of the present invention
  • Figure 2 is a schematic diagram of signaling interaction in a data transmission process in an embodiment of the present invention
  • Fig. 3 is a schematic diagram of signaling interaction of the TUE feedback response message in Fig. 2;
  • Fig. 4 is a schematic structural diagram of a user terminal in an embodiment of the present invention.
  • the TUE can directly feed back the ACK/NACK message to the base station through the uplink (uplink), or through the side link, the ACK/NACK message can be transmitted first.
  • the NACK message is fed back to the CUE, which is then fed back to the base station via the uplink.
  • the base station can divide the original data packets into small pieces and send them to multiple CUEs, and these CUEs forward them to the TUE.
  • TUE can get the original data packet after assembling the received small blocks.
  • the user equipment cooperation group includes multiple CUEs and one TUE, and the CUE and TUE are in a many-to-one relationship.
  • the user equipment cooperative group includes multiple CUEs and one TUE at the same time, how to perform ACK/NACK message feedback has not yet been resolved.
  • the present invention provides a data transmission method.
  • the TUE decodes the split data and feeds back a response message to the CUE, and then the CUE will receive the response message. It is forwarded to the base station, so that ACK/NACK message feedback can be realized when the user equipment cooperation group contains multiple CUEs and one TUE at the same time.
  • an embodiment of the present invention provides a data transmission method, and the method may include the following steps:
  • Step 11 When receiving the first segmented data forwarded by the CUE, decode the first segmented data.
  • the first segmented data is any piece of segmented data obtained by dividing the original data by the base station; there are more than two CUEs that forward the segmented data.
  • the ACK/NACK message means an ACK message or a NACK message.
  • the TUE successfully receives the data, it feeds back an ACK message, otherwise it feeds back a NACK message.
  • the base station divides the original data to be sent to the TUE into multiple pieces.
  • each divided data is simply referred to as divided data.
  • the base station sends each segmented data to multiple CUEs, and the multiple CUEs forward the segmented data to the TUE.
  • TUE assembles the received segmented data to obtain the original data.
  • the TUE may also determine whether the received data is segmented data based on physical layer signaling.
  • the physical layer signaling may be SCI, of course, it may also be other physical layer signaling.
  • the base station may add two fields to the SCI, one of which is used to indicate the number of divided data (T_num), and the other is used to indicate the number (C_num) of the currently scheduled divided data. Based on the two newly added fields in the SCI, TUE can determine whether the received data is segmented data.
  • a user equipment cooperative group includes 4 CUEs, namely CUE1, CUE2, CUE3, and CUE4.
  • C_num 3.
  • the resource allocation field in the SCI also comes from DCI.
  • the base station should first add a corresponding field in the DCI sent to each CUE, and the corresponding field will be added in the SCI.
  • Step 12 Based on the decoding result, a response message is fed back to the CUE, and the CUE forwards the received response message to the base station.
  • multiple methods can be used to feed back the response message to the CUE.
  • a response message may be fed back to the CUE that forwards the first segmented data.
  • a response message can be fed back to the CUE that forwards the segmented data.
  • Each segmentation data is fed back separately.
  • the response message received by each CUE that forwards the segmented data may be the same, for example, all segmented data are received successfully or all of the segmented data has failed to be received.
  • the response message received by each CUE that forwards the segmented data may also be different, for example, all segmented data is partially received successfully or partially failed. Since the response message is only fed back to one CUE at a time, the TUE can use 1 bit to feed back the response message.
  • the TUE may also feed back the same response message to the CUE forwarding each of the segmented data based on the decoding results of all the segmented data corresponding to the original data. At this time, the response message received by each CUE that forwards the divided data is the same.
  • the TUE when the TUE successfully receives all the divided data, it is determined that the original data has been successfully received. At this time, when the TUE fails to receive any divided data, it is determined that the original data has failed to be received.
  • 1 bit may be used to feed back whether the original data is successfully received. For example, when the original data is successfully received, the feedback bits received by each of the CUEs are all 1. When the original data reception fails, the feedback bits received by each of the CUEs are all 0. At this time, the base station needs to reschedule all links after receiving the response message forwarded by the CUE.
  • the base station in order to save data transmission resources, only feed back to the CUE whether each of the divided data is successfully received, or feed back to each CUE whether the original data is successfully received or not at the same time. Whether each of the divided data is successfully received.
  • the base station after receiving the response message forwarded by the CUE, the base station can learn the link that failed to schedule, and then reschedule the link on the link that failed to schedule, instead of rescheduling all links, thereby saving data transmission Resources.
  • multiple methods may be used to feed back to the CUE whether each of the segmented data is successfully received.
  • M bits may be used to feed back whether each of the divided data is successfully received.
  • M is a positive integer
  • the value of M is the same as the number of the divided data
  • the value of each bit in the M bits corresponds to the decoding result of the divided data in a one-to-one correspondence.
  • each bit is used to indicate whether the uniquely corresponding divided data is successfully received.
  • the order of the bits in the M bits may be sorted according to the CUE ID of the CUE sending the corresponding segmented data or the number of the corresponding segmented data.
  • K bits may be used to feed back whether each of the segmented data is successfully received.
  • K is a positive integer.
  • the value of K is the same as the number of non-repetitive divided data in the divided data, and the value of each bit in the K bits corresponds to the decoding result of the non-repetitive divided data in a one-to-one correspondence.
  • the non-repetitive segmentation data refers to that two pieces of the segmentation data are not completely repeated, for example, part of the data is repeated, or all data is not repeated at all.
  • the order of each bit in the K bits can be sorted according to the number of the corresponding divided data.
  • 1 bit may be used to feed back to the CUE whether the original data was successfully received
  • M bits or K bits may be used to feed back to each CUE whether the divided data was successfully received.
  • each CUE that receives the response message may forward the received response message to the base station.
  • only the CUE pre-designated by the base station may forward the received response message to the base station.
  • the base station can at most specify only one of the CUEs to feed back the ACK/NACK message.
  • the base station can specify which CUEs need to forward ACK/NACK messages through physical layer signaling or high-layer signaling when building a user equipment cooperative group or when building an association relationship between TUE and CUE.
  • Figure 2 is a schematic diagram of signaling interaction in a data transmission process in an embodiment of the present invention.
  • a user equipment cooperation group includes 4 CUEs, namely CUE1, CUE2, CUE3, and CUE4.
  • the segmented data obtained after the original data is segmented are piece 1, piece 2, piece 3, and piece 4, respectively.
  • the base station gNB sends the segmented data piece 3 to CUE1, sends the segmented data piece 2 to CUE2, sends the segmented data piece 1 to CUE3, and sends the segmented data piece 4 to CUE4.
  • CUE1 to CUE4 send the corresponding segmentation data to the TUE.
  • the base station gNB indicates the resource allocation of divided data through Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the split data sent by CUE1 to CUE4 to TUE is carried by the Physical Sidelink Shared Channel (PSSCH).
  • PSSCH Physical Sidelink Shared Channel
  • the CUE also sends sidelink control information (Sidelink Control Information, SCI) to each TUE respectively.
  • SCI Seglink Control Information
  • Each side link between CUE and TUE has corresponding SCI and segmentation data. SCI is used to indicate the resource allocation of split data.
  • Fig. 3 is a schematic diagram of signaling interaction for the TUE in Fig. 2 to feed back an ACK/NACK message.
  • the TUE can feed back each segmented data separately.
  • the TUE can feed back the NACK message to CUE1 (as shown in step 301), that is, the feedback bit received by CUE1 is 0, and the ACK message is fed back to CUE2, CUE3, and CUE4 (as shown in step 302 to step 304).
  • Show that is, the feedback bits received by CUE2, CUE3, and CUE4 are all 1.
  • the base station only needs to reschedule the link that failed to forward, that is, the side link between CUE1 and TUE.
  • steps 301 to 304 can be performed at the same time, that is, the TUE sends data to CUE1 to CUE4 at the same time.
  • steps 301 to 304 can also be performed sequentially, that is, the TUE sends data to CUE1 to CUE4 in sequence.
  • the specific execution sequence of step 301 to step 304 does not constitute a limitation to the present invention, and all fall within the protection scope of the present invention.
  • the TUE can use 1 bit to feed back to each CUE whether the original data is successfully received. Since the reception of the divided data piece 3 fails, the original data reception fails. Therefore, the response messages fed back by the TUE to the CUE1 to CUE4 are all bit 0.
  • the base station needs to reschedule all links, namely the side link between CUE1 and TUE, the side link between CUE2 and TUE, the side link between CUE3 and TUE, and the side link between CUE4 and TUE.
  • the segmented data needs to be retransmitted on the link.
  • the TUE may feed back to the CUE whether each of the segmented data is successfully received by using 4 bits.
  • the TUE sorts the bits that need to be fed back to CUE1 to CUE4, obtains an M-bit response message, and sends the 4-bit response message to CUE1 to CUE4, respectively. among them:
  • TUEs can be arranged in ascending order of CUE ID.
  • the corresponding 4-bit response message is: 0, 1, 1, 1.
  • TUEs can also be arranged in descending order of CUE ID.
  • the corresponding 4-bit response message is: 1, 1, 1, 0.
  • the TUE can also be arranged in ascending order of the number of the divided data.
  • the corresponding 4-bit response message is: 1, 1, 0, 1.
  • the TUE can also be arranged in descending order of the number of the divided data. At this time, the corresponding 4-bit response message is: 1, 0, 1, 1.
  • the TUE After the TUE receives the SCI sent by each side link, according to the information in the SCI, it can determine which side links the segmented data sent are repeated.
  • a user equipment cooperation group includes 4 CUEs, namely CUE1, CUE2, CUE3, and CUE4.
  • the segmented data obtained after the original data segmentation are piece1 and piece 2, respectively.
  • the SCI information sent on each side link is as follows:
  • the 2-bit response message is: 1, 1.
  • 1 bit may be used to feed back to the CUE whether the original data is successfully received, and M bits or K bits may be used to feed back to each CUE whether the divided data is successfully received.
  • the response message received by each CUE should be (1+M) bits or (1+K) bits.
  • step 305 to step 308 after CUE1 to CUE4 receive the response message fed back by the TUE, they all forward the received response message to the base station gNB, respectively.
  • the CUE pre-designated by the base station gNB in CUE1 to CUE4 can forward the received response message to the base station gNB instead of all CUEs.
  • the received response message is forwarded to the base station gNB.
  • the CUE After receiving the response message fed back by the TUE, in step 211, the CUE sends the multiplexed response message to the base station gNB.
  • the subsequent base station gNB can re-schedule the divided data piece 3 based on the multiplexed response message.
  • the base station gNB can first indicate the data to be retransmitted to the CUE through DCI (ie step 309), and then CUE1 retransmits the segmented data piece 3, and instructs the resource allocation of the retransmitted data through the corresponding SCI (ie step 310) .
  • the TUE when there are more than two CUEs forwarding the split data, after the TUE decodes the split data, the TUE feeds back a response message to the CUE, and then the CUE will receive the received message.
  • the response message is forwarded to the base station, so that ACK/NACK message feedback can be realized when the user equipment cooperative group contains multiple CUEs and one TUE at the same time.
  • an embodiment of the present invention provides a user terminal 40.
  • the user terminal 30 may include a decoding unit 41 and a response message feedback unit 42. among them:
  • the decoding unit 41 is adapted to decode the first segmented data when the first segmented data forwarded by the CUE is received; the first segmented data is the segmented data obtained by the base station segmenting the original data Any one of the CUEs that forward the segmented data is more than two;
  • the response message feedback unit 42 is adapted to feed back a response message to the CUE based on the decoding result, and the CUE forwards the received response message to the base station.
  • the response message feedback unit 42 is adapted to feed back a response message to the CUE forwarding the first segmented data based on the decoding result of the first segmented data.
  • the response message feedback unit 42 is adapted to feed back the same response message to the CUE forwarding each of the segmented data based on the decoding results of all the segmented data corresponding to the original data.
  • the response message is used to feed back whether the original data is successfully received.
  • the response message is used to feed back whether each of the segmented data is successfully received.
  • it is used to feed back whether the original data is successfully received, and whether each of the segmented data is successfully received.
  • the number of bits used to feed back whether each of the segmented data is successfully received is M bits; wherein, the value of M is The number of the divided data is the same, and the value of each bit in the M bits corresponds to the decoding result of the divided data in a one-to-one correspondence.
  • the order of each bit in the M bits is sorted according to the identity identification number of the CUE sending the corresponding segmented data or the serial number of the corresponding segmented data.
  • the number of bits used to feed back whether each of the segmented data is successfully received is K bits; wherein, the value of K , The number of non-repetitive divided data in the divided data is the same, and the value of each bit in the K bits corresponds to the decoding result of the non-repetitive divided data in a one-to-one correspondence.
  • the order of each bit in the K bits is sorted according to the number of the corresponding divided data.
  • the number of bits used to feed back whether the original data is successfully received is 1 bit.
  • the embodiment of the present invention also provides another computer-readable storage medium on which computer instructions are stored.
  • the steps of any one of the data transmission methods in the foregoing embodiments are executed, and details are not described herein again.
  • the computer-readable storage medium may include: ROM, RAM, magnetic disk, or optical disk, etc.
  • An embodiment of the present invention also provides a user terminal, the user terminal may include a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor runs the computer instructions The steps of any one of the data transmission methods in the foregoing embodiments are executed at the time, and details are not described herein again.

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Abstract

一种数据传输方法、用户终端及计算机可读存储介质。所述方法包括：当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码；所述第一分割数据，是基站对原始数据进行分割所得到的分割数据中的任意一份；转发所述分割数据的CUE为两个以上；基于解码结果，向所述CUE反馈应答消息，由所述CUE将所接收到的应答消息转发至基站。应用上述方案，可以实现用户设备协作组中同时包含多个CUE及一个TUE的情况下，ACK/NACK消息的反馈。

Description

数据传输方法、用户终端及计算机可读存储介质
本申请要求于2019年8月30日提交中国专利局、申请号为201910816989.6、发明名称为“数据传输方法、用户终端及计算机可读存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体涉及一种数据传输方法、用户终端及计算机可读存储介质。
背景技术
在无线通信网络中，当某些用户设备(User Equipment，UE)处于网络覆盖边缘、处于网络覆盖外(out-of-coverage)、或者周围干扰较大时，可以通过周围其他UE的协助进行数据的发送或接收，以提高用户速率、增强覆盖。
网络可以根据业务需求、信道状态等准则构建用户设备协作组(UE cooperation group)。一个用户设备协作组至少包含一个协作UE(Cooperative UE，CUE)和一个目标UE(Target UE，TUE)。
以下行为例，用户协作分为两个阶段：第一阶段，基站发送数据包给用户设备协作组；第二阶段，用户设备协作组中的CUE把从基站接收到的数据包转发给TUE。
其中，第一阶段是在下行链路(downlink)上，第二阶段是在侧链路(sidelink)上。TUE接收到数据包后，如果成功解码，则反馈确认应答(Acknowledgement，ACK)消息，否则，反馈否定确认应 答(Negative Acknowledgement，NACK)消息。
然而，现有反馈ACK/NACK消息的方法，仅适用于用户设备协作组中仅包含一个TUE及一个CUE的情况，对于用户设备协作组中同时包含多个CUE及一个TUE的情况，如何进行ACK/NACK消息反馈，目前尚未解决。
发明内容
本发明要解决的问题是在用户设备协作组中同时包含多个CUE及一个TUE时，如何进行ACK/NACK消息反馈。
为解决上述问题，本发明实施例提供了一种数据传输方法，所述方法包括：当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码；所述第一分割数据，是基站对原始数据进行分割所得到的分割数据中的任意一份；转发所述分割数据的CUE为两个以上；基于解码结果，向所述CUE反馈应答消息，由所述CUE将所接收到的应答消息转发至基站。
可选地，所述基于解码结果，向所述CUE反馈应答消息，包括：基于对所述第一分割数据的解码结果，向转发所述第一分割数据的CUE反馈应答消息。
可选地，所述基于解码结果，向所述CUE反馈应答消息，包括：基于所述原始数据对应的全部分割数据的解码结果，分别向转发各所述分割数据的CUE反馈相同的应答消息。
可选地，所述应答消息用于反馈所述原始数据是否被成功接收。
可选地，所述应答消息用于反馈各所述分割数据是否被成功接收。
可选地，所述应答消息，用于反馈所述原始数据是否被成功接收，以及各所述分割数据是否被成功接收。
可选地，采用M比特反馈各所述分割数据是否被成功接收；其中，所述M的值，与所述分割数据的数量相同，且所述M比特中各比特的值，与所述分割数据的解码结果一一对应。
可选地，所述M比特中各比特位的顺序，按照发送对应分割数据的CUE的身份标识号或对应分割数据的编号进行排序。
可选地，采用K比特反馈各所述分割数据是否被成功接收；其中，所述K的值，与所述分割数据中，不重复的分割数据的数量相同，且所述K比特中各比特的值，与所述不重复的分割数据的解码结果一一对应。
可选地，所述K比特中各比特位的顺序，按照对应分割数据的编号进行排序。
可选地，采用1比特反馈所述原始数据是否被成功接收。
可选地，所述由所述CUE将所接收到的应答消息转发至基站，包括：由基站预先指定的CUE将所接收到的应答消息转发至所述基站。
可选地，所述由所述CUE将所接收到的应答消息转发至基站，包括：由各接收到所述应答消息的CUE，分别将所接收到的应答消息转发至所述基站。
可选地，在所述当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码之前，还包括：基于物理层信令，判断所接收到的数据是否为分割数据。
本发明实施例还提供了一种用户终端，所述用户终端包括：解码单元，适于当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码；所述第一分割数据，是基站对原始数据进行分割所得到的分割数据中的任意一份；转发所述分割数据的CUE为两个以上；应答消息反馈单元，适于基于解码结果，向所述CUE反馈应答消息，由所述CUE将所接收到的应答消息转发至基站。
可选地，所述应答消息反馈单元，适于基于对所述第一分割数据的解码结果，向转发所述第一分割数据的CUE反馈应答消息。
可选地，所述应答消息反馈单元，适于基于所述原始数据对应的全部分割数据的解码结果，分别向转发各所述分割数据的CUE反馈相同的应答消息。
可选地，所述应答消息用于反馈所述原始数据是否被成功接收。
可选地，所述应答消息用于反馈各所述分割数据是否被成功接收。
可选地，所述应答消息，用于反馈所述原始数据是否被成功接收，以及各所述分割数据是否被成功接收。
可选地，所述应答消息反馈单元所反馈的应答消息中，用于反馈各所述分割数据是否被成功接收的比特数为M比特；其中，所述M的值，与所述分割数据的数量相同，且所述M比特中各比特的值，与所述分割数据的解码结果一一对应。
可选地，所述M比特中各比特位的顺序，按照发送对应分割数据的CUE的身份标识号或对应分割数据的编号进行排序。
可选地，所述应答消息反馈单元所反馈的应答消息中，用于反馈各所述分割数据是否被成功接收的比特数为K比特；其中，所述K的值，与所述分割数据中，不重复的分割数据的数量相同，且所述K比特中各比特的值，与所述不重复的分割数据的解码结果一一对应。
可选地，所述K比特中各比特位的顺序，按照对应分割数据的编号进行排序。
可选地，所述应答消息反馈单元所反馈的应答消息中，用于反馈所述原始数据是否被成功接收的比特数为1比特。
本发明实施例还提供了一种计算机可读存储介质，其上存储有计算机指令，所述计算机指令运行时执行上述任一种所述方法的步骤。
本发明实施例还提供了一种用户终端，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机指令，所述处理器运行所述计算机指令时执行上述任一种所述方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下优点：
采用上述方案，在转发分割数据的CUE为两个以上时，TUE对分割数据进行解码后，向CUE反馈应答消息，再由CUE将所接收到的应答消息转发至基站，由此可以实现用户设备协作组中同时包含多个CUE及一个TUE的情况下，ACK/NACK消息的反馈。
附图说明
图1是本发明实施例中一种数据传输方法的流程图；
图2是本发明实施例中一种数据传输过程的信令交互的示意图；
图3是图2中TUE反馈应答消息的信令交互示意图；
图4是本发明实施例中一种用户终端的结构示意图。
具体实施方式
现有技术中，对于用户设备协作组中仅包含一个TUE及一个CUE的情况，TUE可以直接通过上行链路(uplink)向基站反馈ACK/NACK消息，也可以通过侧链路，先将ACK/NACK消息反馈给CUE，再由CUE通过上行链路反馈给基站。
然而，随着用户密度的不断增加和设备种类的多样化，出现了新的应用场景。在某些场景下，基站需要发送大数据包，或者下行数据业务比较紧急时，基站可以把原始数据包分割成一些小块(piece)分别发送给多个CUE，再由这些CUE分别转发给TUE，TUE把收到的小块组装后可得到原始数据包，此时，用户设备协作组中包含多个CUE及一个TUE，且CUE和TUE是多对一的关系。
对于用户设备协作组中同时包含多个CUE及一个TUE的情况，如何进行ACK/NACK消息反馈，目前尚未解决。
针对上述问题，本发明提供了一种数据传输方法，在转发分割数据的CUE为两个以上时，TUE对分割数据进行解码后，向CUE反馈应答消息，再由CUE将所接收到的应答消息转发至基站，由此可以实现用户设备协作组中同时包含多个CUE及一个TUE的情况下，ACK/NACK消息的反馈。
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例作详细地说明。
参照图1，本发明实施例提供了一种数据传输方法，所述方法可以包括以下步骤：
步骤11，当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码。
其中，所述第一分割数据，是基站对原始数据进行分割所得到的分割数据中的任意一份；转发所述分割数据的CUE为两个以上。
在本发明的实施例中，ACK/NACK消息，表示ACK消息或NACK消息。其中，当TUE成功接收到数据时，反馈ACK消息，否则反馈NACK消息。
在具体实施中，基站将要发送给TUE的原始数分割成多个小块(piece)。本发明的实施例中，为了描述方便，将每个分割后的数据简称为分割数据。基站将各分割数据分别发送给多个CUE，再由该多个CUE将分割数据转发给该TUE。TUE将接收到的分割数据组装后得到原始数据。
在本发明的一实施例中，对所述第一分割数据进行解码之前，TUE还可以基于物理层信令，判断所接收到的数据是否为分割数据。
其中，所述物理层信令可以为SCI，当然也可以为其它物理层信 令。比如，基站可以在SCI中增加两个域，其中一个域用于指示分割数据的数量(T_num)，另一个域用于指示当前调度的分割数据的编号(C_num)。TUE基于该SCI中新增加的两个域，可以判断所接收到的数据是否为分割数据。
比如，若一个用户设备协作组中包含4个CUE，分别为CUE1、CUE2、CUE3及CUE4。原始数据包被分割为4份分割数据，分别为piece 1、piece 2、piece 3及piece 4，则T_num＝4。
若CUE1与TUE之间的侧链路上调度的分割数据为piece 3，则基站向CUE1发送的DCI，以及CUE1向TUE发送的SCI中，C_num＝3。
若CUE2与TUE之间的侧链路上调度的分割数据为piece 2，则基站向CUE2发送的DCI，以及CUE2向TUE发送的SCI中，C_num＝2。
若CUE3与TUE之间的侧链路上调度的分割数据为piece 1，则基站向CUE3发送的DCI，以及CUE3向TUE发送的SCI中，C_num＝1。
若CUE4与TUE之间的侧链路上调度的分割数据为piece 4，则基站向CUE4发送的DCI，以及CUE4向TUE发送的SCI中，C_num＝4。
可以理解的是，由于是基站控制模式，所以SCI中的资源分配域也是来自DCI。也就是说，基站应先在发送至各CUE的DCI中增加相应的域，SCI中即会增加相应的域。
步骤12，基于解码结果，向所述CUE反馈应答消息，由所述CUE将所接收到的应答消息转发至基站。
在具体实施中，基于解码结果，可以采用多种方式，向CUE反馈应答消息。
在本发明的一实施例中，基于对所述第一分割数据的解码结果，可以向转发所述第一分割数据的CUE反馈应答消息。
也就是说，对于任意分割数据，在解码成功后，即可向转发该分割数据的CUE反馈应答消息。每个分割数据单独反馈。此时，每个转发分割数据的CUE接收到的应答消息可能相同，比如，所有分割数据全部接收成功或全部接收失败。每个转发分割数据的CUE接收到的应答消息也可能不同，比如，所有分割数据部分接收成功或部分接收失败。由于每次仅向一个CUE反馈应答消息，故TUE可以采用1比特反馈应答消息。
在本发明的另一实施例中，TUE也可以基于所述原始数据对应的全部分割数据的解码结果，分别向转发各所述分割数据的CUE反馈相同的应答消息。此时，每个转发分割数据的CUE接收到的应答消息是相同的。
具体地，基于所述原始数据对应的全部分割数据的解码结果，可以仅向各CUE反馈所述原始数据是否被成功接收，或者仅向各CUE反馈各所述分割数据是否被成功接收，也可以既向各CUE反馈所述原始数据是否被成功接收，也向各CUE反馈各所述分割数据是否被成功接收。
在具体实施中，当TUE成功接收所有分割数据时，判定原始数据接收成功。此时当TUE接收任意分割数据失败时，判定原始数据接收失败。
本发明的一实施例中，可以采用1比特反馈所述原始数据是否被成功接收。比如，在原始数据接收成功时，各所述CUE接收到的反馈比特均为1。当原始数据接收失败时，各所述CUE接收到的反馈比特均为0。此时，基站在接收到CUE转发的应答消息后，需要重新调度所有的链路。
在本发明的一实施例中，为了节约数据传输资源，仅向CUE反 馈各所述分割数据是否被成功接收，或者在向各CUE反馈所述原始数据是否被成功接收的同时，向各CUE反馈各所述分割数据是否被成功接收。此时，基站在接收到CUE转发的应答消息后，能够获知调度失败的链路，进而在调度失败的链路上，重新调度该链路，而非重新调度所有链路，由此节约数据传输资源。
在具体实施中，可以采用多种方式向CUE反馈各所述分割数据是否被成功接收。
在本发明的一实施例中，可以采用M比特反馈各所述分割数据是否被成功接收。其中，M为正整数，所述M的值，与所述分割数据的数量相同，且所述M比特中各比特的值，与所述分割数据的解码结果一一对应。
比如，当所述分割数据的数量为4时，M＝4。4个比特中，每一比特，均用于表示唯一对应的分割数据是否为被成功接收。
在具体实施中，所述M比特中各比特位的顺序，可以按照发送对应分割数据的CUE的身份标识号(CUE ID)或对应分割数据的编号进行排序。
在本发明的另一实施例中，为了节约传输应答消息所需要的资源，可以采用K比特反馈各所述分割数据是否被成功接收。其中，K为正整数。所述K的值，与所述分割数据中，不重复的分割数据的数量相同，且所述K比特中各比特的值，与所述不重复的分割数据的解码结果一一对应。
本发明的实施例中，所述不重复的分割数据，指的是两份所述分割数据不完全重复，比如，部分数据重复，或者所有数据完全不重复。
比如，当原始数据包被分割为2份分割数据时，若存在4个CUE，则必然有不重复的分割数据数量为2。
在具体实施中，所述K比特中各比特位的顺序，可以按照对应分割数据的编号进行排序。
在本发明的其它实施例中，还可以既向CUE反馈所述原始数据是否被成功接收，又向各CUE反馈各所述分割数据是否被成功接收。其中，如上所述，可以采用1比特向CUE反馈所述原始数据是否被成功接收，而采用M比特或K比特，向各CUE反馈各所述分割数据是否被成功接收。
在具体实施中，各接收到所述应答消息的CUE，可以均将所接收到的应答消息转发至所述基站。
在本发明的一实施例中，为了缓解其他不需要转发ACK/NACK反馈的CUE的半双工问题，可以仅由基站预先指定的CUE将所接收到的应答消息转发至所述基站。
如果两个CUE接收的是相同的分割数据，则基站最多只指定其中一个CUE反馈ACK/NACK消息。基站可以在构建用户设备协作组的时候，或者在构建TUE和CUE的关联关系时，就通过物理层信令或高层信令指定好哪些CUE需要转发ACK/NACK消息。
图2为本发明实施例中一种数据传输过程的信令交互示意图。
参照图2，假设一个用户设备协作组中包含4个CUE，分别为CUE1、CUE2、CUE3及CUE4。原始数据分割后得到的分割数据分别为piece 1、piece 2、piece 3及piece 4。在步骤201至204中，基站gNB将分割数据piece 3发送至CUE1，将分割数据piece 2发送至CUE2，将分割数据piece 1发送至CUE3，及将分割数据piece 4发送至CUE4。在步骤205至208中，CUE1～CUE4将相应的分割数据发送至TUE。
其中，基站gNB通过下行控制信息(Downlink Control Information，DCI)指示分割数据的资源分配。CUE1～CUE4发送给TUE的分割数据由物理侧链共享信道(Physical Sidelink Shared Channel，PSSCH)承载。CUE还分别向各TUE发送侧链控制信息(Sidelink Control Information，SCI)。各CUE与TUE之间的侧链路， 都有相对应的SCI和分割数据。SCI用来指示分割数据的资源分配。
图3为图2中TUE反馈ACK/NACK消息的信令交互示意图。
若只有分割数据piece 3接收失败，在一实施例中，TUE可以针对每个分割数据单独反馈。具体可以参照图3，TUE可以向CUE1反馈NACK消息(如步骤301所示)，即CUE1接收到的反馈比特为0，而向CUE2、CUE3及CUE4均反馈ACK消息(如步骤302至步骤304所示)，即CUE2、CUE3及CUE4接收到的反馈比特均为1。此时，基站仅需要重新调度转发失败的链路，即CUE1与TUE之间的侧链路。
可以理解的是，步骤301至步骤304可以同时执行，即TUE同时向CUE1～CUE4发送数据。步骤301至步骤304也可以顺序执行，即TUE顺序向CUE1～CUE4发送数据。具体步骤301至步骤304的执行顺序，并不构成对本发明的限制，且均在本发明的保护范围之内。
在另一实施例中，TUE可以通过1比特，向各CUE反馈所述原始数据是否被成功接收。由于分割数据piece 3接收失败，故所述原始数据接收失败，因此，TUE向CUE1～CUE4反馈的应答消息均为比特0。此时，基站需要重新调度所有链路，即在CUE1与TUE之间的侧链路、CUE2与TUE之间的侧链路、CUE3与TUE之间的侧链路及CUE4与TUE之间的侧链路上都需要重传分割数据。
在又一实施例中，TUE可以通过4比特向CUE反馈各所述分割数据是否被成功接收。
具体地，TUE将需要反馈给CUE1～CUE4的各个比特进行排序后，得到M比特的应答消息，并将该4比特的应答消息分别发送给CUE1～CUE4。其中：
TUE可以按照CUE ID的升序排列，此时，对应的4比特应答消息为：0，1，1，1。
TUE也可以按照CUE ID的降序排列，此时，对应的4比特应答 消息为：1，1，1，0。
TUE还可以按照分割数据的编号的升序进行排列，此时，对应的4比特应答消息为：1，1，0，1。
TUE还可以按照分割数据的编号的降序进行排列，此时，对应的4比特应答消息为：1，0，1，1。
在具体实施中，若分割数据的数量小于一个用户设备协作组中包含的CUE的数量，则其中两个或两个以上的CUE接收到的分割数据为同一分割数据。TUE在接收到各个侧链路发送的SCI后，根据SCI中的信息，可以判断出哪几条侧链路上发送的分割数据是重复的。
比如，假设一个用户设备协作组中包含4个CUE，分别为CUE1、CUE2、CUE3及CUE4。原始数据分割后得到的分割数据分别为piece1及piece 2，
各个侧链路上发送的SCI的信息如下：
CUE1向TUE发送的SCI中，分割数据的数量T_num＝4，当前调度的分割数据的编号C_num＝1，TUE接收该分割数据失败；
CUE2向TUE发送的SCI中，分割数据的数量T_num＝4，当前调度的分割数据的编号C_num＝2，TUE接收该分割数据成功；
CUE3向TUE发送的SCI中，分割数据的数量T_num＝4，当前调度的分割数据的编号C_num＝2，TUE接收该分割数据成功；
CUE4向TUE发送的SCI中，分割数据的数量T_num＝4，当前调度的分割数据的编号C_num＝1，TUE接收该分割数据成功。
TUE接收到SCI后，根据T_num和C_num便可判断出C_num＝1所表示的分割数据piece 1在CUE1→TUE和CUE4→TUE两条链路中是重复发送的，同样地，C_num＝2所表示的piece 2在CUE2→TUE和CUE3→TUE两条链路中是重复发送的。对于同一个分割数据，只要有一条链路接收成功即可。
此时，为了节约数据传输资源，可以仅使用2比特向CUE反馈各所述分割数据是否被成功接收。比如，按照分割数据的编号的升序或者降序进行排列，该2比特的应答消息为：1，1。
在本发明的其它实施例中，还可以采用1比特向CUE反馈所述原始数据是否被成功接收，而采用M比特或K比特，向各CUE反馈各所述分割数据是否被成功接收。最后各CUE接收到的应答消息应为(1+M)比特或者为(1+K)比特。
继续参照图3，在一实施例中，如步骤305至步骤308所示，CUE1～CUE4接收到TUE反馈的应答消息后，均分别将所接收到的应答消息转发至所述基站gNB。在其它实施例中，若CUE1～CUE4接收到的应答消息相同，则可以由CUE1～CUE4中基站gNB预先指定的CUE，将所接收到的应答消息转发至所述基站gNB，而非所有CUE均将所接收到的应答消息转发至所述基站gNB。
收到TUE反馈的应答消息后，在步骤211，CUE将所述复用后的应答消息发送至基站gNB。后续基站gNB可以基于复用后的应答消息重新进行分割数据piece 3的调度。
具体地，基站gNB可以通过DCI先向CUE指示待重传的数据(即步骤309)，然后由CUE1重传分割数据piece 3，并通过相应的SCI指示重传数据的资源分配(即步骤310)。
由上述内容可知，本发明实施例中的数据传输方法，在转发分割数据的CUE为两个以上时，TUE对分割数据进行解码后，通过TUE向CUE反馈应答消息，再由CUE将所接收到的应答消息转发至基站，由此可以实现用户设备协作组中同时包含多个CUE及一个TUE的情况下，ACK/NACK消息的反馈。
为了使本领域技术人员更好地理解和实现本发明，以下对上述方法对应的装置及计算机可读存储介质进行详细描述。
参照图4，本发明实施例提供了一种用户终端40，所述用户终端 30可以包括：解码单元41及应答消息反馈单元42。其中：
所述解码单元41，适于当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码；所述第一分割数据，是基站对原始数据进行分割所得到的分割数据中的任意一份；转发所述分割数据的CUE为两个以上；
所述应答消息反馈单元42，适于基于解码结果，向所述CUE反馈应答消息，由所述CUE将所接收到的应答消息转发至基站。
在本发明的一实施例中，所述应答消息反馈单元42，适于基于对所述第一分割数据的解码结果，向转发所述第一分割数据的CUE反馈应答消息。
在本发明的另一实施例中，所述应答消息反馈单元42，适于基于所述原始数据对应的全部分割数据的解码结果，分别向转发各所述分割数据的CUE反馈相同的应答消息。
在具体实施中，所述应答消息用于反馈所述原始数据是否被成功接收。
在具体实施中，所述应答消息用于反馈各所述分割数据是否被成功接收。
在具体实施中，用于反馈所述原始数据是否被成功接收，以及各所述分割数据是否被成功接收。
在本发明的一实施例中，所述应答消息反馈单元42所反馈的应答消息中，用于反馈各所述分割数据是否被成功接收的比特数为M比特；其中，所述M的值，与所述分割数据的数量相同，且所述M比特中各比特的值，与所述分割数据的解码结果一一对应。
在具体实施中，所述M比特中各比特位的顺序，按照发送对应分割数据的CUE的身份标识号或对应分割数据的编号进行排序。
在本发明的另一实施例中，所述应答消息反馈单元42所反馈的 应答消息中，用于反馈各所述分割数据是否被成功接收的比特数为K比特；其中，所述K的值，与所述分割数据中，不重复的分割数据的数量相同，且所述K比特中各比特的值，与所述不重复的分割数据的解码结果一一对应。
在具体实施中，所述K比特中各比特位的顺序，按照对应分割数据的编号进行排序。
在本发明的又一实施例中，所述应答消息反馈单元42所反馈的应答消息中，用于反馈所述原始数据是否被成功接收的比特数为1比特。
本发明实施例还提供了另一种计算机可读存储介质，其上存储有计算机指令，所述计算机指令运行时执行上述实施例中任一种所述数据传输方法的步骤，不再赘述。
在具体实施中，所述计算机可读存储介质可以包括：ROM、RAM、磁盘或光盘等。
本发明实施例还提供了一种用户终端，所述用户终端可以包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机指令，所述处理器运行所述计算机指令时执行上述实施例中任一种所述数据传输方法的步骤，不再赘述。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (27)

  1. 一种数据传输方法，其特征在于，包括：
    当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码；所述第一分割数据，是基站对原始数据进行分割所得到的分割数据中的任意一份；转发所述分割数据的CUE为两个以上；
    基于解码结果，向所述CUE反馈应答消息，由所述CUE将所接收到的应答消息转发至基站。
  2. 如权利要求1所述的数据传输方法，其特征在于，所述基于解码结果，向所述CUE反馈应答消息，包括：
    基于对所述第一分割数据的解码结果，向转发所述第一分割数据的CUE反馈应答消息。
  3. 如权利要求1所述的数据传输方法，其特征在于，所述基于解码结果，向所述CUE反馈应答消息，包括：
    基于所述原始数据对应的全部分割数据的解码结果，分别向转发各所述分割数据的CUE反馈相同的应答消息。
  4. 如权利要求3所述的数据传输方法，其特征在于，所述应答消息用于反馈所述原始数据是否被成功接收。
  5. 如权利要求3所述的数据传输方法，其特征在于，所述应答消息用于反馈各所述分割数据是否被成功接收。
  6. 如权利要求3所述的数据传输方法，其特征在于，所述应答消息，用于反馈所述原始数据是否被成功接收，以及各所述分割数据是否被成功接收。
  7. 如权利要求5或6所述的数据传输方法，其特征在于，采用M比特反馈各所述分割数据是否被成功接收；其中，所述M的值，与所述分割数据的数量相同，且所述M比特中各比特的值，与所述分割数据的解码结果一一对应。
  8. 如权利要求7所述的数据传输方法，其特征在于，所述M比特中各比特位的顺序，按照发送对应分割数据的CUE的身份标识号或对应分割数据的编号进行排序。
  9. 如权利要求5或6所述的数据传输方法，其特征在于，采用K比特反馈各所述分割数据是否被成功接收；其中，所述K的值，与所述分割数据中，不重复的分割数据的数量相同，且所述K比特中各比特的值，与所述不重复的分割数据的解码结果一一对应。
  10. 如权利要求9所述的数据传输方法，其特征在于，所述K比特中各比特位的顺序，按照对应分割数据的编号进行排序。
  11. 如权利要求4或6所述的数据传输方法，其特征在于，采用1比特反馈所述原始数据是否被成功接收。
  12. 如权利要求1所述的数据传输方法，其特征在于，所述由所述CUE将所接收到的应答消息转发至基站，包括：
    由基站预先指定的CUE将所接收到的应答消息转发至所述基站。
  13. 如权利要求1所述的数据传输方法，其特征在于，所述由所述CUE将所接收到的应答消息转发至基站，包括：
    由各接收到所述应答消息的CUE，分别将所接收到的应答消息转发至所述基站。
  14. 如权利要求1所述的数据传输方法，其特征在于，在所述当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码之前，还包括：
    基于物理层信令，判断所接收到的数据是否为分割数据。
  15. 一种用户终端，其特征在于，包括：
    解码单元，适于当接收到CUE转发的第一分割数据时，对所述第一分割数据进行解码；所述第一分割数据，是基站对原始数据进行 分割所得到的分割数据中的任意一份；转发所述分割数据的CUE为两个以上；
    应答消息反馈单元，适于基于解码结果，向所述CUE反馈应答消息，由所述CUE将所接收到的应答消息转发至基站。
  16. 如权利要求15所述的用户终端，其特征在于，所述应答消息反馈单元，适于基于对所述第一分割数据的解码结果，向转发所述第一分割数据的CUE反馈应答消息。
  17. 如权利要求15所述的用户终端，其特征在于，所述应答消息反馈单元，适于基于所述原始数据对应的全部分割数据的解码结果，分别向转发各所述分割数据的CUE反馈相同的应答消息。
  18. 如权利要求17所述的用户终端，其特征在于，所述应答消息用于反馈所述原始数据是否被成功接收。
  19. 如权利要求17所述的用户终端，其特征在于，所述应答消息用于反馈各所述分割数据是否被成功接收。
  20. 如权利要求17所述的用户终端，其特征在于，所述应答消息，用于反馈所述原始数据是否被成功接收，以及各所述分割数据是否被成功接收。
  21. 如权利要求19或20所述的用户终端，其特征在于，所述应答消息反馈单元所反馈的应答消息中，用于反馈各所述分割数据是否被成功接收的比特数为M比特；其中，所述M的值，与所述分割数据的数量相同，且所述M比特中各比特的值，与所述分割数据的解码结果一一对应。
  22. 如权利要求21所述的用户终端，其特征在于，所述M比特中各比特位的顺序，按照发送对应分割数据的CUE的身份标识号或对应分割数据的编号进行排序。
  23. 如权利要求19或20所述的用户终端，其特征在于，所述应答消 息反馈单元所反馈的应答消息中，用于反馈各所述分割数据是否被成功接收的比特数为K比特；其中，所述K的值，与所述分割数据中，不重复的分割数据的数量相同，且所述K比特中各比特的值，与所述不重复的分割数据的解码结果一一对应。
  24. 如权利要求23所述的用户终端，其特征在于，所述K比特中各比特位的顺序，按照对应分割数据的编号进行排序。
  25. 如权利要求18或19所述的用户终端，其特征在于，所述应答消息反馈单元所反馈的应答消息中，用于反馈所述原始数据是否被成功接收的比特数为1比特。
  26. 一种计算机可读存储介质，其上存储有计算机指令，其特征在于，所述计算机指令运行时执行权利要求1至14任一项所述方法的步骤。
  27. 一种用户终端，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机指令，其特征在于，所述处理器运行所述计算机指令时执行权利要求1至14任一项所述方法的步骤。
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