A communication method, base station, terminal, and storage medium

Abstract

The embodiment of the application provides a communication method and a base station, a terminal and a storage medium, comprising: receiving transport blocks (TBs) transmitted by a remote terminal and a relay terminal through two links respectively; wherein the TB transmitted by the relay terminal is a copied TB which is copied by the remote terminal at a MAC layer and transmitted to the relay terminal through a sidelink; in the case that the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated, issuing a data retransmission prohibition instruction to a sending end which sends the TB through the other link, or not instructing the sending end to perform data retransmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, in particular to a communication method, a base station, a terminal and a storage medium. BACKGROUND

[0002] A terminal (User Equipment, UE) aggregation scheme of a side link (Side Link, SL) relay is to aggregate at a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, that is, to aggregate and split data and to copy data at the PDCP layer, so as to enhance uplink coverage and significantly improve cell edge transmission rate. In the UE aggregation scheme at the PDCP layer, a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) / physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) must be sent at different time-frequency locations, resulting in no gain of a physical layer, and there are scenarios of data reception failure at a medium access control (Medium Access Control, MAC) layer and a radio link control (Radio Link Control, RLC) layer of a receiving end, in which case multiple data retransmissions need to be performed until a maximum number of retransmissions is reached, resulting in problems of increased latency and large resource overhead. SUMMARY

[0003] Embodiments of the present application provide a communication method, a base station, a terminal and a storage medium, which can improve physical layer gain, reduce latency and resource overhead.

[0004] The technical solution of the present application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a communication method applied to a base station, the method comprising:

[0006] receiving a transport block (TB) sent by a remote terminal and a relay terminal through two links respectively; wherein the TB sent by the relay terminal is a copied TB sent by the remote terminal to the relay terminal through a side link after copying the TB at a medium access control (MAC) layer;

[0007] in a case where the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated, issuing an instruction to prohibit data retransmission to a sending end that sends the TB through the other link, or not instructing the sending end to perform data retransmission.

[0008] In a second aspect, an embodiment of the present application provides a communication method applied to a terminal, the method comprising:

[0009] The remote terminal replicates the TB at a physical layer and sends the replicated TB to the relay terminal through a sidelink, so that the relay terminal sends the replicated TB to the base station through a link between the relay terminal and the base station;

[0010] The remote terminal sends the TB to the base station through a link between the remote terminal and the base station, so that the base station issues a data retransmission prohibition instruction to a sending terminal that sends the TB through another link, or does not instruct the sending terminal to perform data retransmission, in a case where the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated.

[0011] In a third aspect, an embodiment of the present application provides a base station, which comprises:

[0012] A receiving unit is configured to receive transport blocks (TBs) sent by a remote terminal and a relay terminal through two links respectively, wherein the TBs sent by the relay terminal are replicated TBs replicated by the remote terminal at a physical layer and sent to the relay terminal through a sidelink;

[0013] A first sending unit is configured to issue a data retransmission prohibition instruction to a sending terminal that sends the TB through another link, or not to instruct the sending terminal to perform data retransmission, in a case where the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated.

[0014] In a fourth aspect, an embodiment of the present application provides a terminal, which comprises:

[0015] A replicating unit is configured to replicate, by a remote terminal, a TB at a physical layer and send the replicated TB to a relay terminal through a sidelink, so that the relay terminal sends the replicated TB to a base station through a link between the relay terminal and the base station;

[0016] A second sending unit is configured to send, by the remote terminal, the TB to the base station through a link between the remote terminal and the base station, so that the base station issues a data retransmission prohibition instruction to a sending terminal that sends the TB through another link, or does not instruct the sending terminal to perform data retransmission, in a case where the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated.

[0017] In a fifth aspect, an embodiment of the present application provides a base station, which comprises a first processor and a first memory, and the first processor implements the above communication method when executing a running program stored in the first memory.

[0018] In a sixth aspect, an embodiment of the present application provides a terminal, which comprises a second processor and a second memory; the second processor implements the communication method as described above when executing a running program stored in the second memory.

[0019] In a seventh aspect, an embodiment of the present application provides a storage medium, which stores a computer program, and the computer program is executed by a processor to implement the communication method as described above.

[0020] Embodiments of the present application provide a communication method, a base station, a terminal and a storage medium. The method comprises: receiving transport blocks (TBs) transmitted by a remote terminal and a relay terminal through two links respectively; wherein the TB transmitted by the relay terminal is a copied TB which is copied by the remote terminal at a MAC layer and transmitted to the relay terminal through a sidelink; and in a case that the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated, issuing an instruction of prohibiting data retransmission to a transmission end which transmits the TB through the other link, or not instructing the transmission end to perform data retransmission. By using the implementation scheme, the UE aggregation at the physical layer can transmit the TBs on the same or different time-frequency resources, the physical layer gain is improved, and the base station does not need to perform data retransmission by the transmission end corresponding to the other link as long as the TB is successfully received and demodulated through one link, the number of data retransmissions is reduced, and the time delay and resource consumption are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 1 is a schematic diagram of a data convergence, shunting and copying at a PDCP layer;

[0022] Figure 2 FIG. 2 is a flow of a communication method provided by an embodiment of the present application; Figure One ;

[0023] Figure 3 FIG. 3 is a schematic diagram of a terminal at a PHY layer aggregation provided by an embodiment of the present application;

[0024] Figure 4 FIG. 4 is a flow of a communication method provided by an embodiment of the present application; Figure Two ;

[0025] Figure 5 FIG. 5 is a structure schematic of a base station provided by an embodiment of the present application; Figure One ;

[0026] Figure 6 FIG. 6 is a structure schematic of a base station provided by an embodiment of the present application; Figure Two ;

[0027] Figure 7 FIG. 7 is a structure schematic of a terminal provided by an embodiment of the present application; Figure One ;

[0028] Figure 8 A structure diagram of a terminal provided by an embodiment of the present application Figure Two . DETAILED DESCRIPTION

[0029] In order to enable a person skilled in the art to better understand the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in combination with the drawings, and the drawings are only used for reference and are not intended to limit the embodiments of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the present application is only for the purpose of describing the embodiments of the present application and is not intended to limit the present application.

[0031] In the following description, "some embodiments" are related to a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict. It should be noted that the terms "first, second, third" related to the embodiments of the present application are only used to distinguish similar objects, and do not represent a specific order of the objects. It can be understood that "first, second, third" can be interchanged in a specific order or sequence as allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0032] A schematic diagram of data aggregation and shunting and replication at the PDCP layer is shown in FIG. 1, wherein a remote terminal is an anchor terminal, a 130 Mbps video is transmitted, and three relay terminals are used for data transmission between the base station, and the terminal capacity or subscription modulation error ratio of each relay terminal is 40 Mbps. Figure 1

[0033] ​The retransmission mechanism in the existing standard (TS 38.321 MAC and TS 38.322 RLC) is as follows: the MAC hybrid automatic repeat reQuest (HARQ) process of the receiving end is as follows: if the TB decoding is successful, the TB is sent to the upper layer; if the decoding is unsuccessful, the TB or code block group (CBG) is placed in the HARQ buffer, and the physical layer is instructed to send negative acknowledgement (NACK) information; and when the maximum number of retransmissions is reached, the TB is sent to the RLC layer for processing. The RLC automatic repeat reQuest (ARQ) mechanism of the receiving end is as follows: the receiving end checks the serial number (SN) of the received RLC service data unit (SDU) and the polling bit, and if the SN number is incorrect or not received, it means that the corresponding RLC SDU or segment thereof is not received, and the polling bit indicates that feedback is required, so a status report containing a protocol data unit (PDU) is sent to instruct the sending end to retransmit the corresponding RLC SDU or segment thereof. The retransmission count is +1 from the first retransmission. When the number of RLC layer retransmissions reaches the maximum, the RLC layer notifies the radio resource control (RRC) layer and triggers the radio link failure (RLF) process.

[0034] However, only the PDCP layer aggregation scheme of the terminal is supported in the prior art, so that the resource blocks in the physical layer are different, and therefore, in the PDCP aggregation scheme, the PDSCH / PUSCH must send different resource blocks at different time-frequency locations, and the physical layer has no gain.

[0035] To solve the above problems, the communication method provided in the embodiments of the present application can optimize the retransmission problem of the terminal when sending the same data packet uplink, reduce resource overhead and reduce latency, improve physical layer resource utilization, improve demodulation performance, and save terminal power. Specific reference is made to the following embodiments for specific description.

[0036] The embodiments of the present application provide a communication method, as shown in Figure 2 The method can include the following steps.

[0037] S101, receiving the transmission block (TB) sent by the remote terminal and the relay terminal through two links respectively; wherein the TB sent by the relay terminal is the copied TB of the remote terminal, which is copied at the medium access control (MAC) layer and sent to the relay terminal through the sidelink.

[0038] In the embodiment of the present application, the remote terminal replicates the TB at the MAC layer, converts one TB into a TB with different Redundant Version (RV) numbers, and then sends the replicated TB to the relay terminal through sidelink communication. Then, the relay terminal and the remote terminal each send the same TB to the base station. At this time, the terminal is aggregated at the physical layer, and the TB can be sent on the same or different time-frequency domain resources, and the physical layer resource utilization, scheduling flexibility, error rate, and demodulation performance can be improved.

[0039] The schematic diagram of terminal aggregation at the physical layer is shown in Figure 3 The remote terminal transmits the replicated TB to the relay terminal at the L1 layer, and the relay terminal sends the TB to the base station after receiving the TB through the fifth generation interface (PCI-Express, PC5) interface. The remote terminal also sends the TB to the base station.

[0040] S102, in the case of successfully demodulating the TB received through one link and unsuccessfully demodulating the TB received through the other link, issuing a data retransmission prohibition instruction to the sending end that sends the TB through the other link, or not instructing the sending end to perform data retransmission.

[0041] It should be noted that, in the present application, since the same TB is transmitted through two links, the base station only needs to correctly receive data on one link, which can solve the problem of repeated retransmission when one direct link data is always incorrect in the prior art, until the maximum number of retransmissions is reached, thereby causing serious resource waste and throughput decline.

[0042] In an optional embodiment, the process of issuing a data retransmission prohibition instruction to the sending end that sends the TB through the other link can include: issuing a MAC control element (Control Element, CE) carrying the retransmission prohibition instruction to the sending end.

[0043] It should be noted that, in the case of successfully receiving and demodulating the TB of one link, the base station obtains the corresponding RV number. If the TB received from the other link is not successfully decoded at the MAC layer, the base station knows through the RV number that the unsuccessfully demodulated TB has been successfully demodulated on the other link. The same data on this link fails to be demodulated and does not need to be retransmitted again. Therefore, the MAC CE can carry the instruction to prohibit retransmission of the TB, indicating that the base station has received the TB from another terminal of the terminal aggregation, and there is no need to repeatedly send.

[0044] It can be understood that the method of sending the retransmission prohibition instruction through the MAC CE has faster response speed and lower latency, can save more resources, and is suitable for time-sensitive services.

[0045] In another alternative embodiment, the process of issuing the instruction of prohibiting data retransmission to the sending end that sends the TB through the other link can include: issuing a radio link control sublayer (RLC) status report carrying the instruction of prohibiting retransmission to the sending end.

[0046] It should be noted that, in the case where the base station successfully receives the demodulation of the TB of one link, if the SN number of the RLC PDU received from the other link is missing, it indicates that the RLC PDU (or its segment) of the sending end is not successfully received, and the query bit indicates that feedback is required, the RLC layer can send a status report including a status PDU to the sending end to indicate which RLC SDU is successfully received and which RLC SDU is not successfully received. In addition, the status report also contains the signaling of prohibiting retransmission of the TB, indicating that the base station has received the TB from another terminal aggregated by the UE, and there is no need to repeatedly send. Therefore, the sending end does not need to judge according to the time window and thus perform retransmission operation, saving resources, reducing latency, and also avoiding RLF.

[0047] It can be understood that the method of sending the instruction of prohibiting retransmission through the RLC status report can tolerate some TB retransmission of the MAC layer, and is suitable for services that are not sensitive to latency and have high accuracy requirements.

[0048] For the above two alternative embodiments, if the sending end is a relay terminal, the transmission path of the instruction of prohibiting data retransmission to the sending end that sends the TB through the other link can be: issuing the instruction of prohibiting data retransmission to the relay terminal through the direct link between the base station and the relay terminal.

[0049] For the above alternative embodiment, if the TB sending of the relay terminal fails, the base station can send the instruction of prohibiting retransmission to the relay terminal through the direct link between the base station and the relay terminal.

[0050] Specifically, when the base station successfully receives the TB through the UU link (the interface between the terminal device (User Equipment, UE) and the universal terrestrial radio access network (UMTS Terrestrial Radio Access Network, UTRAN)) of the remote terminal, but the TB sending of the UU link of the relay terminal fails, the base station issues a MAC CE instruction carrying the instruction of prohibiting retransmission through the UU direct link. The relay terminal can know from receiving the instruction that the TB just sent is not successfully received by the base station, but since the base station has successfully received the same TB on the other link, there is no need to retransmit the TB again.

[0051] For the above another optional embodiment, if the TB transmission of the relay terminal fails, the base station can send the no-retransmission instruction to the terminal through the direct link between the base station and the relay terminal.

[0052] Specifically, when the base station successfully receives the TB through the UU link of the remote terminal, but the TB transmission on the UU link of the relay terminal fails, the base station sends the RLC status report carrying the no-retransmission instruction to the relay terminal, so that the relay terminal can know that the just transmitted TB is not successfully received by the base station, but because the base station has successfully received the same TB on another link, it is not necessary to retransmit the TB again.

[0053] For the above two optional embodiments, if the sending terminal is the remote terminal, the transmission path of the no-retransmission instruction sent to the sending terminal that transmits the TB through the another link can be: sending the no-retransmission instruction to the remote terminal through the direct link between the base station and the remote terminal.

[0054] For the above two optional embodiments, if the sending terminal is the remote terminal, the transmission path of the no-retransmission instruction sent to the sending terminal that transmits the TB through the another link can also be: forwarding the no-retransmission instruction to the remote terminal through the relay terminal.

[0055] For the above one optional embodiment, if the TB transmission of the remote terminal fails, the base station can send the MAC CE carrying the no-retransmission instruction to the remote terminal through the following two paths: the first one is to transmit the MAC CE to the remote terminal through the direct link between the base station and the remote terminal; the other one is that the base station first sends the MAC CE to the relay terminal, and the relay terminal forwards the message and sends it to the remote terminal through the PC5 link.

[0056] Specifically, when the base station successfully receives the TB through the UU link of the relay terminal, but the TB transmission on the UU link of the remote terminal fails, the base station sends the MAC CE instruction carrying the no-retransmission instruction to the remote terminal through the direct link between the base station and the remote terminal, so that the remote terminal can know that the just transmitted TB is not successfully received by the base station, but because the base station has successfully received the same TB on another link, it is not necessary to retransmit the TB again.

[0057] Specifically, when the base station successfully receives the TB through the UU link of the relay terminal, but the TB transmission on the UU link of the remote terminal fails, the base station sends the RLC status report carrying the retransmission prohibition instruction to the remote terminal through the direct link between the base station and the remote terminal, so that the remote terminal can know through the received instruction that the just transmitted TB is not successfully received by the base station, but because the base station has successfully received the same TB on another link, the TB does not need to be retransmitted again.

[0058] For the above-mentioned another optional embodiment, if the TB transmission of the remote terminal fails, the base station can send the RLC status report carrying the retransmission prohibition instruction to the remote terminal through the following two paths: the first is to transmit the RLC status report to the remote terminal through the direct link between the base station and the remote terminal; the other is that the base station first sends the RLC status report to the relay terminal, and the relay terminal forwards the message and sends it to the remote terminal through the PC5 link.

[0059] Specifically, when the base station successfully receives the TB through the UU link of the relay terminal, but the TB transmission on the UU link of the remote terminal fails, the base station sends the RLC status report carrying the retransmission prohibition instruction to the remote terminal through the direct link between the base station and the remote terminal, so that the remote terminal can know through the received instruction that the just transmitted TB is not successfully received by the base station, but because the base station has successfully received the same TB on another link, the TB does not need to be retransmitted again.

[0060] Specifically, when the base station successfully receives the TB through the UU link of the relay terminal, but the TB transmission on the UU link of the remote terminal fails, the base station sends the RLC status report carrying the retransmission prohibition instruction to the remote terminal through the direct link between the base station and the remote terminal, so that the remote terminal can know through the received instruction that the just transmitted TB is not successfully received by the base station, but because the base station has successfully received the same TB on another link, the TB does not need to be retransmitted again.

[0061] In still another optional embodiment, the process of not instructing the sending end to perform data retransmission can include: not sending a negative acknowledgement instruction of a MAC layer to the sending end or not carrying a problem sequence number in an RLC status report.

[0062] It should be noted that the above two optional embodiments describe the method of explicitly indicating the prohibition of retransmission, and in the third optional embodiment, the method of implicitly indicating the prohibition of retransmission is described, that is, when the base station has successfully received a TB of a link and knows the RV number of the TB, therefore, when the TB of another link is not successfully decoded and the corresponding RV number is known, the base station can know that the TB transmitted by the link with the problem is the amplitude version of the TB of another link, and therefore, the base station does not need to send the MAC instruction or the RLC status report containing the SN number with the problem. Therefore, in the uplink data duplication scenario of terminal physical layer aggregation, if the TB of one link is successfully received by the base station (that is, the link receives the MAC or RLC status report sent by the base station to indicate that the TB is successfully received). Another link does not need to sense whether the currently transmitted TB packet is correct, if correct, the TB packet is used for data duplication; if incorrect, it is handed over to the base station for processing, and the terminal does not need to sense it. If the retransmission instruction of the base station is not received, retransmission is not needed. This method can reduce the signaling overhead, and the base station does not need to send an instruction to indicate the terminal to solve the problem of repeated retransmission of the terminal.

[0063] Specifically, when the base station successfully receives the TB through the UU link of the remote terminal, but the TB transmission on the UU link of the relay terminal fails, the base station does not send the MAC layer NACK instruction or does not indicate the SN number with the problem in the RLC layer status report, and the relay terminal does not sense the transmitted TB. If the retransmission instruction of the base station is not received, the TB block does not need to be retransmitted again.

[0064] It can be understood that the UE aggregation implemented in the physical layer can transmit the TB on the same or different time-frequency resources, improve the physical layer gain, and the base station only needs to successfully receive and demodulate the TB through one link, and the corresponding sending end of the other link does not need to perform data retransmission, thereby reducing the number of data retransmission, and further reducing the time delay and resource overhead, and saving the terminal power.

[0065] Based on the above embodiments, the embodiments of the present application also propose a communication method, as shown in Figure 4 The method can include the following steps.

[0066] S201, the remote terminal duplicates the TB in the physical layer, and sends the duplicated TB to the relay terminal through the sidelink; so that the relay terminal sends the duplicated TB to the base station through the link between the relay terminal and the base station.

[0067] In some embodiments, the terminal device can be referred to as a user equipment (UE). The terminal device can be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. The terminal device can also be a smart phone, a tablet computer, a palm computer, a mobile station (MS), a mobile terminal (MT), etc. The terminal device can communicate with one or more network devices via a radio access network (RAN). For example, the terminal device can be a mobile telephone (also known as a "cellular" phone) or a computer with a mobile telephone, etc. The terminal device can also be a portable, pocket, hand-held, computer-embedded, or car-mounted mobile apparatus which exchanges voice and / or data with a radio access network. The terminal device can also be a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in future evolved networks, etc. The present application is not limited in this regard.

[0068] In the embodiments of the present application, when the remote terminal performs data duplication in uplink, the same TB is sent to the relay terminal, and the relay terminal sends the TB to the base station after receiving the TB through the PC5 link between the relay terminal and the remote terminal.

[0069] S202, the remote terminal sends a TB to the base station through a link between the remote terminal and the base station; so that the base station issues a data retransmission prohibition instruction to a sending end that sends the TB through another link, or does not instruct the sending end to perform data retransmission, in a case where the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated.

[0070] In the embodiments of the present application, the remote terminal also sends a TB to the base station through a link between the remote terminal and the base station. If one of the channels is poor and causes transmission failure and retransmission, considering that the two channels send the same TB, only the base station needs to correctly receive the TB on one of the links.

[0071] In the embodiments of the present application, generally, the link between the remote terminal and the base station is faster than the link between the relay terminal and the base station.

[0072] It can be understood that the UE aggregation implemented in the physical layer can send the TBs on the same or different time-frequency resources, improve the physical layer gain, and the base station does not need the data retransmission of the corresponding sending end of the other link as long as the demodulated TB is successfully received through one link, thereby reducing the number of data retransmissions, and further reducing the time delay and resource overhead.

[0073] Embodiments of the present application provide a base station. As shown in the figure, the base station 1 comprises: Figure 5

[0074] The receiving unit 10 is configured to receive the transport blocks TB sent by the remote terminal and the relay terminal through two links respectively; wherein the TB sent by the relay terminal is the copied TB of the remote terminal, which is copied at the physical layer and sent to the relay terminal through the sidelink.

[0075] The first sending unit 11 is configured to, in the case that the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated, issue a data retransmission prohibition instruction to the sending end that sends the TB through the other link, or does not instruct the sending end to perform data retransmission.

[0076] Optionally, the first sending unit 11 is further configured to issue a medium access control sublayer control element MAC CE carrying the retransmission prohibition instruction to the sending end.

[0077] Optionally, the first sending unit 11 is further configured to issue a radio link control sublayer RLC status report carrying the retransmission prohibition instruction to the sending end.

[0078] Optionally, the first sending unit 11 is further configured to not issue a negative acknowledgement instruction of the MAC layer or not carry a problem sequence number in the RLC status report to the sending end.

[0079] Optionally, the sending end is the relay terminal,

[0080] The first sending unit 11 is further configured to issue the data retransmission prohibition instruction to the relay terminal through the direct link between the relay terminal and the base station.

[0081] Optionally, the sending end is the remote terminal,

[0082] The first sending unit 11 is further configured to issue the data retransmission prohibition instruction to the remote terminal through the direct link between the remote terminal and the base station.

[0083] Optionally, the sending end is the remote terminal,

[0084] ​The first sending unit 11 is further configured to forward the retransmission prohibition instruction to the remote terminal through the relay terminal.

[0085] The base station provided in the embodiments of the present application receives the transmission blocks (TBs) sent by the remote terminal and the relay terminal through two links respectively; wherein the TB sent by the relay terminal is the copied TB which is copied by the remote terminal at the MAC layer and sent to the relay terminal through the sidelink; in the case that the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated, an instruction of prohibiting data retransmission is issued to the sending end which sends the TB through the other link, or the sending end is not instructed to perform data retransmission. As can be seen, the base station provided in the embodiments of the present application can improve the physical layer gain by realizing UE aggregation to send the TBs on the same or different time-frequency resources, and the base station does not need the data retransmission of the corresponding sending end through the other link as long as the TB is successfully received and demodulated through one link, thereby reducing the data retransmission, and further reducing the time delay and resource consumption.

[0086] Figure 6 The base station 1 provided in the embodiments of the present application has the component structure as shown in the figure Figure Two In actual application, based on the same disclosure concept of the above embodiments, as shown in the figure Figure 6 The base station 1 of the embodiments of the present application includes a first processor 12, a first memory 13 and a first communication bus 14.

[0087] In the process of the specific embodiments, the first processor 12 can be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a CPU, a controller, a microcontroller, and a microprocessor. It can be understood that for different devices, the electronic device for realizing the function of the processor can also be other devices, and the embodiments of the present application do not make specific limitations.

[0088] In the embodiments of the present application, the first communication bus 14 is used to realize the connection and communication between the first processor 12 and the first memory 13; and the first processor 12 realizes the following communication method when executing the running program stored in the first memory 13.

[0089] receive a transport block (TB) transmitted by a remote terminal and a relay terminal through two links respectively; wherein the TB transmitted by the relay terminal is a copied TB of the TB transmitted by the remote terminal to the relay terminal through a sidelink at a medium access control (MAC) layer; and in a case that the TB received through one link is successfully demodulated and the TB received through the other link is not successfully demodulated, issue a data retransmission prohibition instruction to a transmission end that transmits the TB through the other link, or do not instruct the transmission end to perform data retransmission.

[0090] Further, the first processor 12 is further configured to issue a medium access control (MAC) control element (CE) carrying the data retransmission prohibition instruction to the transmission end.

[0091] Further, the first processor 12 is further configured to issue a radio link control (RLC) status report carrying the data retransmission prohibition instruction to the transmission end.

[0092] Further, the first processor 12 is further configured to not issue a negative acknowledgement (NAK) instruction of the MAC layer to the transmission end or not carry a problem sequence number in the RLC status report.

[0093] Further, the transmission end is the relay terminal,

[0094] The first processor 12 is further configured to issue the data retransmission prohibition instruction to the relay terminal through a direct link between the relay terminal and the first processor 12.

[0095] Further, the transmission end is the remote terminal,

[0096] The first processor 12 is further configured to issue the data retransmission prohibition instruction to the remote terminal through a direct link between the remote terminal and the first processor 12.

[0097] Further, the transmission end is the remote terminal,

[0098] The first processor 12 is further configured to forward the data retransmission prohibition instruction to the remote terminal through the relay terminal.

[0099] Embodiments of the present application also provide a terminal, such as Figure 7 As shown in the figure, the terminal 2 comprises:

[0100] A copying unit 20 configured to copy a TB at a physical layer by a remote terminal, and transmit the copied TB to a relay terminal through a sidelink; so that the relay terminal transmits the copied TB to a base station through a link between the relay terminal and the base station.

[0101] The second sending unit 21 is configured to send, by the remote terminal, a TB to the base station through a link between the remote terminal and the base station, so that the base station sends, to a sending terminal that sends the TB through another link, a data retransmission prohibition instruction or does not instruct the sending terminal to perform data retransmission, in a case where the base station successfully demodulates the TB received through one link and does not successfully demodulate the TB received through the other link.

[0102] The terminal provided in the embodiment of the present application is configured to: copy, by a remote terminal, a TB at a physical layer, and send the copied TB to a relay terminal through a sidelink; send, by the relay terminal, the copied TB to a base station through a link between the relay terminal and the base station; send, by the remote terminal, the TB to the base station through a link between the remote terminal and the base station; and send, by the base station, to a sending terminal that sends the TB through another link, a data retransmission prohibition instruction or do not instruct the sending terminal to perform data retransmission, in a case where the base station successfully demodulates the TB received through one link and does not successfully demodulate the TB received through the other link. As can be seen, the terminal provided in the embodiment of the present application can send TBs on the same or different time-frequency resources by implementing UE aggregation at a physical layer, thereby improving physical layer gain, and the base station does not need to perform data retransmission by the sending terminal corresponding to the other link as long as the TB is successfully received and demodulated through one link, thereby reducing data retransmission, and further reducing time delay and resource consumption.

[0103] Figure 8 The terminal 2 provided in the embodiment of the present application includes a second processor 22, a second memory 23, and a second communication bus 24. Figure Two In actual applications, based on the same disclosure concept of the above embodiment, as shown in Figure 8 The terminal 2 provided in the embodiment of the present application includes a second processor 22, a second memory 23, and a second communication bus 24.

[0104] In the process of the specific embodiment, the second processor 22 can be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a CPU, a controller, a microcontroller, and a microprocessor. It can be understood that, for different devices, the electronic device used to implement the function of the processor can also be other devices, which is not specifically limited in the embodiment.

[0105] In the embodiment of the present application, the second communication bus 24 is used to realize the connection communication between the second processor 22 and the second memory 23; the second processor 22 realizes the following communication method when executing the running program stored in the second memory 23:

[0106] The remote terminal performs TB duplication at a physical layer, and sends the duplicated TB to the relay terminal through a sidelink; the relay terminal sends the duplicated TB to the base station through a link between the relay terminal and the base station; the remote terminal sends the TB to the base station through a link between the remote terminal and the base station; in a case that the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, the base station issues a data retransmission prohibition instruction to a sending end that sends the TB through the another link, or does not instruct the sending end to perform data retransmission.

[0107] The embodiment of the present application provides a storage medium, which stores a computer program; the computer readable storage medium stores one or more programs; the one or more programs can be executed by one or more first processors and / or second processors; and the computer program realizes the communication method as described above.

[0108] It should be noted that, in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0109] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions for causing an image display device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present disclosure.

[0110] The above description is only the preferred embodiment of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. A communication method characterized by comprising: The method applied to a base station comprises: Respectively receiving transport blocks (TBs) transmitted by a remote terminal and a relay terminal through two links; wherein the TB transmitted by the relay terminal is a copied TB copied by the remote terminal at a medium access control (MAC) layer and transmitted to the relay terminal through a sidelink; In a case where a TB received through one link is successfully demodulated and a TB received through another link is not successfully demodulated, issuing a data retransmission prohibition instruction to a transmitting end that transmits the TB through the another link, or not instructing the transmitting end to perform data retransmission.

2. The method of claim 1, wherein, The method applied to a base station comprises: Issuing a medium access control (MAC) control element (CE) carrying the data retransmission prohibition instruction to the transmitting end.

3. The method of claim 1, wherein, The method applied to a base station comprises: Issuing a radio link control (RLC) status report carrying the data retransmission prohibition instruction to the transmitting end.

4. The method of claim 1, wherein, The method applied to a base station comprises: Not issuing a negative acknowledgement (NAK) instruction of the MAC layer to the transmitting end or not carrying a problem sequence number in the RLC status report.

5. The method of claim 1, wherein, The transmitting end is the relay terminal, and the method applied to a base station comprises: Issuing the data retransmission prohibition instruction to the relay terminal through a direct link between the base station and the relay terminal.

6. The method of claim 1, wherein, The transmitting end is the remote terminal, and the method applied to a base station comprises: Issuing the data retransmission prohibition instruction to the remote terminal through a direct link between the base station and the remote terminal.

7. The method of claim 1, wherein, The transmitting end is the remote terminal, and the method applied to a base station comprises: Forwarding the data retransmission prohibition instruction to the remote terminal through the relay terminal.

8. A communication method characterized by comprising: The method applied to a remote terminal comprises: The remote terminal copies a TB at a physical layer and transmits the copied TB to a relay terminal through a sidelink; so that the relay terminal transmits the copied TB to a base station through a link between the relay terminal and the base station; The remote terminal transmits a TB to a base station through a link between the remote terminal and the base station; so that the base station, in a case where a TB received through one link is successfully demodulated and a TB received through another link is not successfully demodulated, issues a data retransmission prohibition instruction to a transmitting end that transmits the TB through the another link, or does not instruct the transmitting end to perform data retransmission.

9. A base station, characterized by The base station comprises: A receiving unit configured to respectively receive transport blocks (TBs) transmitted by a remote terminal and a relay terminal through two links; wherein the TB transmitted by the relay terminal is a copied TB copied by the remote terminal at a physical layer and transmitted to the relay terminal through a sidelink; The first sending unit is configured to issue a data retransmission prohibition instruction to a sending end that sends a TB through another link or not to instruct the sending end to perform data retransmission, in a case where the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated.

10. A terminal, characterized by comprising: The terminal comprises: The copying unit is configured to copy, at a physical layer, a TB by a remote terminal and send the copied TB to a relay terminal through a sidelink; and send, by the relay terminal, the copied TB to a base station through a link between the relay terminal and the base station. The second sending unit is configured to send, by the remote terminal, a TB to the base station through a link between the remote terminal and the base station; and cause the base station to issue a data retransmission prohibition instruction to a sending end that sends a TB through another link or not to instruct the sending end to perform data retransmission, in a case where the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated.

11. A base station, characterized by The base station comprises a first processor and a first memory; and the first processor implements the method according to any one of claims 1-7 when executing a running program stored in the first memory.

12. A terminal, characterized by comprising: The terminal comprises a second processor and a second memory; and the second processor implements the method according to claim 8 when executing a running program stored in the second memory.

13. A storage medium having stored thereon a computer program, characterized in that The computer program is executed by a processor to implement the method according to any one of claims 1-8.

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