WO2021036736A1

WO2021036736A1 - Data transmission method, user terminal and computer-readable storage medium

Info

Publication number: WO2021036736A1
Application number: PCT/CN2020/107623
Authority: WO
Inventors: 刘萌萌
Original assignee: 北京紫光展锐通信技术有限公司
Priority date: 2019-08-30
Filing date: 2020-08-07
Publication date: 2021-03-04
Also published as: CN110519022A; CN110519022B

Abstract

A data transmission method, a user terminal and a computer-readable storage medium. The method comprises: when first segmentation data forwarded by a CUE is received, decoding the first segmentation data, wherein the first segmentation data is any one of the pieces of segmentation data obtained by segmenting original data by a base station, and the number of CUEs for forwarding the segmentation data is more than two; on the basis of a decoding result, feeding back a response message to the CUE, and forwarding, by the CUE, the received response message to the base station. By applying the above-mentioned solution, the feedback of an ACK/NACK message can be realized where a user equipment cooperation group comprises a plurality of CUEs and a TUE at the same time.

Description

Data transmission method, user terminal and computer readable storage medium

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910816989.6, and the invention title is "data transmission method, user terminal and computer-readable storage medium" on August 30, 2019, the entire content of which is incorporated by reference Incorporated in this application.

Technical field

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.

Background technique

In a wireless communication network, when some User Equipment (UE) is at the edge of the network coverage, out-of-coverage, or the surrounding interference is large, data can be performed with the assistance of other nearby UEs. Send or receive to increase user rate and enhance coverage.

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).

In the following behavior example, 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.

Among them, the first stage is on the downlink, and the second stage is on the sidelink. 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.

However, 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. For the case where the user equipment cooperative group contains multiple CUEs and one TUE at the same time, how to perform ACK /NACK message feedback, currently unresolved.

Summary of the invention

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.

In order to solve the above-mentioned problem, 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.

Optionally, 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.

Optionally, 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.

Optionally, the response message is used to feed back whether the original data is successfully received.

Optionally, the response message is used to feed back whether each of the segmented data is successfully received.

Optionally, 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.

Optionally, 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. There is a one-to-one correspondence between data decoding results.

Optionally, 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.

Optionally, 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.

Optionally, the order of each bit in the K bits is sorted according to the number of the corresponding divided data.

Optionally, 1 bit is used to feed back whether the original data is successfully received.

Optionally, 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.

Optionally, 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.

Optionally, when the first segmentation data forwarded by the CUE is received, before decoding the first segmentation data, 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.

Optionally, 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.

Optionally, 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.

Optionally, in the response message fed back by the response message feedback unit, 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.

Optionally, in the response message fed back by the response message feedback unit, 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.

Optionally, in the response message fed back by the response message feedback unit, 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.

Compared with the prior art, the technical solution of the embodiment of the present invention has the following advantages:

With the above solution, when there are more than two CUEs forwarding the split data, 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 When the cooperative group includes multiple CUEs and one TUE at the same time, ACK/NACK message feedback.

Description of the drawings

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.

detailed description

In the prior art, for the case where the user equipment cooperation group contains only one TUE and one CUE, 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.

However, with the continuous increase in user density and the diversification of device types, new application scenarios have emerged. In some scenarios, when the base station needs to send large data packets, or when the downlink data service is urgent, 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. At this time, the user equipment cooperation group includes multiple CUEs and one TUE, and the CUE and TUE are in a many-to-one relationship.

For the case where 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.

To solve the above problems, the present invention provides a data transmission method. When there are more than two CUEs forwarding split data, 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.

In order to make the above objectives, features and advantages of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1, 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.

Wherein, 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.

In the embodiment of the present invention, the ACK/NACK message means an ACK message or a NACK message. Among them, when the TUE successfully receives the data, it feeds back an ACK message, otherwise it feeds back a NACK message.

In a specific implementation, the base station divides the original data to be sent to the TUE into multiple pieces. In the embodiment of the present invention, for the convenience of description, 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.

In an embodiment of the present invention, before decoding the first segmented data, the TUE may also determine whether the received data is segmented data based on physical layer signaling.

Wherein, the physical layer signaling may be SCI, of course, it may also be other physical layer signaling. For example, 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.

For example, if a user equipment cooperative group includes 4 CUEs, namely CUE1, CUE2, CUE3, and CUE4. The original data packet is divided into 4 pieces of divided data, which are piece 1, piece 2, piece 3, and piece 4, so T_num=4.

If the divided data scheduled on the side link between CUE1 and TUE is piece 3, in the DCI sent by the base station to CUE1 and the SCI sent by CUE1 to TUE, C_num=3.

If the divided data scheduled on the side link between CUE2 and TUE is piece 2, then in the DCI sent by the base station to CUE2 and the SCI sent by CUE2 to TUE, C_num=2.

If the segmented data scheduled on the side link between CUE3 and TUE is piece 1, then in the DCI sent by the base station to CUE3 and the SCI sent by CUE3 to TUE, C_num=1.

If the divided data scheduled on the side link between CUE4 and TUE is piece 4, in the DCI sent by the base station to CUE4 and the SCI sent by CUE4 to TUE, C_num=4.

It is understandable that because it is the base station control mode, the resource allocation field in the SCI also comes from DCI. In other words, 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.

In a specific implementation, based on the decoding result, multiple methods can be used to feed back the response message to the CUE.

In an embodiment of the present invention, based on the decoding result of the first segmented data, a response message may be fed back to the CUE that forwards the first segmented data.

In other words, for any segmented data, after the decoding is successful, a response message can be fed back to the CUE that forwards the segmented data. Each segmentation data is fed back separately. At this time, 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.

In another embodiment of the present invention, 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.

Specifically, based on the decoding results of all the segmented data corresponding to the original data, it is possible to feed back to each CUE only whether the original data was successfully received, or to feed back to each CUE only whether the segmented data was successfully received, or It not only feeds back to each CUE whether the original data is successfully received, but also feeds back to each CUE whether each of the segmented data is successfully received.

In a specific implementation, 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.

In an embodiment of the present invention, 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.

In an embodiment of the present invention, 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. At this time, 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.

In a specific implementation, multiple methods may be used to feed back to the CUE whether each of the segmented data is successfully received.

In an embodiment of the present invention, M bits may be used to feed back whether each of the divided data is successfully received. Wherein, M is a positive integer, the value of M is the same as the number of the divided data, 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.

For example, when the number of divided data is 4, M=4. Among the 4 bits, each bit is used to indicate whether the uniquely corresponding divided data is successfully received.

In a specific implementation, 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.

In another embodiment of the present invention, in order to save resources required for transmitting the response message, K bits may be used to feed back whether each of the segmented data is successfully received. Among them, 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.

In the embodiment of the present invention, 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.

For example, when the original data packet is divided into 2 pieces of divided data, if there are 4 CUEs, there must be 2 non-repetitive pieces of divided data.

In a specific implementation, the order of each bit in the K bits can be sorted according to the number of the corresponding divided data.

In other embodiments of the present invention, it is also possible to feed back to the CUE whether the original data is successfully received, and to feed back to each CUE whether the divided data is successfully received. Wherein, as described above, 1 bit may be used to feed back to the CUE whether the original data was successfully received, and M bits or K bits may be used to feed back to each CUE whether the divided data was successfully received.

In a specific implementation, each CUE that receives the response message may forward the received response message to the base station.

In an embodiment of the present invention, in order to alleviate the half-duplex problem of other CUEs that do not need to forward ACK/NACK feedback, only the CUE pre-designated by the base station may forward the received response message to the base station.

If two CUEs receive the same segmented data, 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.

Referring to FIG. 2, it is assumed that 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. In steps 201 to 204, 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. In steps 205 to 208, CUE1 to CUE4 send the corresponding segmentation data to the TUE.

Among them, the base station gNB indicates the resource allocation of divided data through Downlink Control Information (DCI). The split data sent by CUE1 to CUE4 to TUE is carried by the Physical Sidelink Shared Channel (PSSCH). The CUE also sends sidelink control information (Sidelink Control Information, SCI) to each TUE respectively. 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.

If only the segmented data piece 3 fails to be received, in an embodiment, the TUE can feed back each segmented data separately. 3, 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. At this time, the base station only needs to reschedule the link that failed to forward, that is, the side link between CUE1 and TUE.

It is understandable that 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.

In another embodiment, 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. At this time, 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.

In another embodiment, the TUE may feed back to the CUE whether each of the segmented data is successfully received by using 4 bits.

Specifically, 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. At this time, the corresponding 4-bit response message is: 0, 1, 1, 1.

TUEs can also be arranged in descending order of CUE ID. In this case, 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. At this time, 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.

In a specific implementation, if the number of divided data is less than the number of CUEs included in one user equipment cooperation group, the divided data received by two or more of the CUEs is the same divided data. 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.

For example, suppose that 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:

In the SCI sent by CUE1 to TUE, the number of segmented data is T_num=4, and the number of segmented data currently scheduled is C_num=1, and TUE fails to receive the segmented data;

In the SCI sent by CUE2 to TUE, the number of divided data is T_num=4, and the number of currently scheduled divided data is C_num=2, and TUE successfully receives the divided data;

In the SCI sent by CUE3 to TUE, the number of divided data is T_num=4, and the number of currently scheduled divided data is C_num=2, and TUE successfully receives the divided data;

In the SCI sent by CUE4 to TUE, the number of divided data is T_num=4, and the number of currently scheduled divided data is C_num=1, and the TUE successfully receives the divided data.

After the TUE receives the SCI, it can be judged according to T_num and C_num that the segmented data piece represented by C_num=1 is repeatedly sent in the two links CUE1→TUE and CUE4→TUE. Similarly, C_num=2 The piece 2 of is repeatedly sent in the two links CUE2→TUE and CUE3→TUE. For the same segmented data, as long as there is a link to receive successfully.

At this time, in order to save data transmission resources, only 2 bits may be used to feed back to the CUE whether each of the divided data is successfully received. For example, according to the ascending or descending order of the number of the divided data, the 2-bit response message is: 1, 1.

In other embodiments of the present invention, 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. Finally, the response message received by each CUE should be (1+M) bits or (1+K) bits.

3, in an embodiment, as shown in 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. In other embodiments, if the response messages received by CUE1 to CUE4 are the same, 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.

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.

Specifically, 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) .

It can be seen from the above content that in the data transmission method in the embodiment of the present invention, 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.

In order to enable those skilled in the art to better understand and implement the present invention, the device and computer-readable storage medium corresponding to the above method will be described in detail below.

4, 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.

In an embodiment of the present invention, 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.

In another embodiment of the present invention, 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.

In a specific implementation, the response message is used to feed back whether the original data is successfully received.

In a specific implementation, the response message is used to feed back whether each of the segmented data is successfully received.

In specific implementation, it is used to feed back whether the original data is successfully received, and whether each of the segmented data is successfully received.

In an embodiment of the present invention, in the response message fed back by the response message feedback unit 42, 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.

In a specific implementation, 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.

In another embodiment of the present invention, in the response message fed back by the response message feedback unit 42, 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.

In a specific implementation, the order of each bit in the K bits is sorted according to the number of the corresponding divided data.

In another embodiment of the present invention, in the response message fed back by the response message feedback unit 42, 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. When the computer instructions are executed, the steps of any one of the data transmission methods in the foregoing embodiments are executed, and details are not described herein again.

In a specific implementation, 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.

Although the present invention is disclosed as above, the present invention is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

A data transmission method, characterized in that it comprises:

When receiving the first segmented data forwarded by the CUE, decode the first segmented data; the first segmented data is any one of the segmented data obtained by the base station segmenting the original data; forwarding the There are more than two CUEs for splitting the data;

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.
The data transmission method according to claim 1, wherein the feedback message to the CUE based on the decoding result comprises:

Based on the decoding result of the first segmented data, a response message is fed back to the CUE that forwards the first segmented data.
The data transmission method according to claim 1, wherein the feedback message to the CUE based on the decoding result comprises:

Based on the decoding results of all the segmented data corresponding to the original data, the same response message is fed back to the CUE that forwards each segmented data.
The data transmission method according to claim 3, wherein the response message is used to feed back whether the original data is successfully received.
The data transmission method according to claim 3, wherein the response message is used to feed back whether each of the segmented data is successfully received.
3. The data transmission method according to claim 3, wherein 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 data transmission method according to claim 5 or 6, wherein 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 corresponds to the decoding result of the divided data in a one-to-one correspondence.
7. The data transmission method according to claim 7, wherein the order of the bits in the M bits is sorted according to the identity of the CUE sending the corresponding segmented data or the number of the corresponding segmented data.
The data transmission method according to claim 5 or 6, characterized in that 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 that of the divided data. The amount of 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.
9. The data transmission method according to claim 9, wherein the order of each bit in the K bits is sorted according to the number of the corresponding divided data.
The data transmission method according to claim 4 or 6, characterized in that 1 bit is used to feed back whether the original data is successfully received.
8. The data transmission method according to claim 1, wherein the forwarding of the received response message by the CUE to the base station comprises:

The CUE pre-designated by the base station forwards the received response message to the base station.
8. The data transmission method according to claim 1, wherein the forwarding of the received response message by the CUE to the base station comprises:

Each CUE that receives the response message forwards the received response message to the base station.
5. The data transmission method according to claim 1, wherein when the first segmented data forwarded by the CUE is received, before the first segmented data is decoded, the method further comprises:

Based on the physical layer signaling, it is determined whether the received data is segmented data.
A user terminal, characterized in that it comprises:

The decoding unit is adapted to decode the first divided data when the first divided data forwarded by the CUE is received; the first divided data is any one of the divided data obtained by the base station dividing the original data Copies; there are more than two CUEs that forward the split data;

The response message feedback unit 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 user terminal according to claim 15, wherein 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 user terminal according to claim 15, wherein the response message feedback unit is adapted to feed back the same information to the CUE that forwards each of the divided data based on the decoding results of all the divided data corresponding to the original data. Reply to the message.
The user terminal according to claim 17, wherein the response message is used to feed back whether the original data is successfully received.
The user terminal according to claim 17, wherein the response message is used to feed back whether each of the segmented data is successfully received.
The user terminal according to claim 17, wherein 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 user terminal according to claim 19 or 20, wherein, in the response message fed back by the response message feedback unit, the number of bits used to feed back whether each of the divided data is successfully received is M bits; wherein, The value of M is the same as the number of the divided data, 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 user terminal according to claim 21, wherein 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 user terminal according to claim 19 or 20, wherein, in the response message fed back by the response message feedback unit, 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 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 user terminal according to claim 23, wherein the order of each bit in the K bits is sorted according to the number of the corresponding divided data.
The user terminal according to claim 18 or 19, wherein in the response message fed back by the response message feedback unit, the number of bits used to feed back whether the original data is successfully received is 1 bit.
A computer-readable storage medium having computer instructions stored thereon, wherein the computer instructions execute the steps of the method according to any one of claims 1 to 14 when the computer instructions are run.
A user terminal, comprising a memory and a processor, the memory stores computer instructions that can run on the processor, wherein the processor executes any of claims 1 to 14 when the computer instructions are executed. One of the steps of the described method.