Communication method, base station, terminal and storage medium

Abstract

The embodiment of the invention provides a communication method, a base station, a terminal and a storage medium. The communication method comprises the following steps: respectively receiving transmission blocks TB sent by a remote terminal and a relay terminal through two links; wherein the TB sent by the relay terminal is the copied TB which is copied by the remote terminal on the MAC layer and sent to the relay terminal through a side link; and under the condition 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 forbidding instruction to a sending end which sends the TB through the other link, or not indicating the sending end to carry out data retransmission.

Description

Technical Field

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

[0002] The terminal (User Equipment, UE) aggregation scheme of the side link (SL) relay (Relay) is aggregated at the Packet Data Convergence Protocol (PDCP) layer, that is, data aggregation, diversion and replication are performed at the PDCP layer, which can enhance uplink coverage and significantly improve the cell edge transmission rate. In the UE aggregation scheme at the PDCP layer, the physical downlink shared channel (PDSCH) / uplink shared channel (PUSCH) must be sent at different time-frequency positions, resulting in no gain at the physical layer, and there will be scenarios of data reception failure at the media access control sublayer (MAC) layer and radio link control sublayer (RLC) layer at the receiving end. At this time, multiple data retransmissions need to be performed until the maximum number of retransmissions is reached, which will lead to problems such as increased latency and high resource overhead. Summary of the invention

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

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

[0005] In a first aspect, an embodiment of the present application provides a communication method, which is applied to a base station. The method includes:

[0006] Receiving 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 TB copied by the remote terminal at the media access control MAC layer and sent to the relay terminal through the side link;

[0007] When a TB received through one link is successfully demodulated and a TB received through another link is not successfully demodulated, a data retransmission prohibition instruction is sent to a transmitter that sends the TB through the other link, or the transmitter is not instructed to retransmit data.

[0008] In a second aspect, an embodiment of the present application proposes a communication method, which is applied to a terminal, and the method includes:

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

[0010] The remote terminal sends a TB to the base station via the link between the remote terminal and the base station; so that when the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, the base station sends 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 retransmit data.

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

[0012] A receiving unit, configured to receive 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 replicated TB obtained by replicating the TB at the physical layer of the remote terminal and sending the replicated TB to the relay terminal through a side link;

[0013] The first sending unit is used to send a data retransmission prohibition instruction to the sending end that sends the TB through the other link, or not instruct the sending end to retransmit data, when the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated.

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

[0015] A replication unit, used for the remote terminal to replicate the TB at the physical layer, and send the replicated TB to the relay terminal through the side link; so that the relay terminal can send the replicated TB to the base station through the link between the relay terminal and the base station;

[0016] The second sending unit is used for the remote terminal to send a TB to the base station through the link between the remote terminal and the base station; so that when the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, the base station sends 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 retransmit data.

[0017] In a fifth aspect, an embodiment of the present application proposes a base station, comprising: a first processor and a first memory; when the first processor executes a running program stored in the first memory, the above-mentioned communication method is implemented.

[0018] In a sixth aspect, an embodiment of the present application proposes a terminal, comprising: a second processor and a second memory; when the second processor executes a running program stored in the second memory, the above-mentioned communication method is implemented.

[0019] In a seventh aspect, an embodiment of the present application proposes a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the communication method as described above is implemented.

[0020] The embodiment of the present application provides a communication method and a base station, a terminal, and a storage medium, the method comprising: receiving transmission blocks TB sent by a remote terminal and a relay terminal respectively through two links; wherein the TB sent by the relay terminal is a copied TB that is copied by the remote terminal at the MAC layer and sent to the relay terminal through a side link; in the case of successfully demodulating the TB received through one link and unsuccessfully demodulating the TB received through another link, sending a prohibition data retransmission instruction to the sender that sends the TB through another link, or not instructing the sender to retransmit data. With the above implementation scheme, UE aggregation can be implemented at the physical layer to send TB on the same or different time-frequency resources, thereby improving the physical layer gain, and as long as the base station successfully receives and demodulates the TB through one link, there is no need for the sender corresponding to the other link to retransmit data, thereby reducing the number of data retransmissions, thereby reducing latency and resource overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of data aggregation, splitting and replication currently performed at the PDCP layer;

[0022] Figure 2 A communication method provided in the present application Figure 1 ;

[0023] Figure 3 A schematic diagram of an exemplary terminal aggregation at the PHY layer provided in an embodiment of the present application;

[0024] Figure 4 A communication method provided in the present application Figure 2 ;

[0025] Figure 5 A schematic diagram of a base station structure provided in an embodiment of the present application Figure 1 ;

[0026] Figure 6 A schematic diagram of a base station structure provided in an embodiment of the present application Figure 2 ;

[0027] Figure 7 A schematic diagram of a terminal structure provided in an embodiment of the present application Figure 1 ;

[0028] Figure 8 A schematic diagram of a terminal structure provided in an embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0029] In order to enable a more detailed understanding of 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 conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

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

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

[0032] The schematic diagram of data aggregation, splitting and replication at the PDCP layer is as follows: Figure 1 As shown, the remote terminal is an anchor terminal, transmitting 130Mbps video, and using three relay terminals to transmit data with the base station. The terminal capacity or subscription modulation error ratio of each relay terminal is 40Mbps.

[0033] The retransmission mechanism in the existing standards (TS 38.321MAC and TS 38.322RLC) is specifically as follows: the MAC hybrid automatic repeat request (HARQ) process at the receiving end is: if the TB decoding is successful, it 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 a negative acknowledgment (NACK) information; when the maximum number of retransmissions is reached, the TB is sent to the RLC layer for processing. RLC Automatic Repeat reQuest (ARQ) mechanism at the receiving end: The receiving end checks the serial number (SN) and query bit of the received RLC service data unit (SDU). If the SN number is wrong or not received, it means that the corresponding RLC SDU or its segment has not been received. When the query bit indicates that feedback is required, a status report containing a status protocol data unit (PDU) is sent to instruct the sending end to retransmit the corresponding RLC SDU or its segment. Starting from the first retransmission, the retransmission count is +1. When the number of retransmissions at the RLC layer reaches the maximum, the RLC layer notifies the Radio Resource Control (RRC) layer and triggers the Radio Link Failure (RLF) process.

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

[0035] To solve the above problems, a communication method proposed in an embodiment of the present application can optimize the retransmission problem of the terminal when sending the same data packet in the uplink, reduce resource overhead and delay, improve physical layer resource utilization, improve demodulation performance and save terminal power. Specific details are described in detail in the following embodiments.

[0036] The present application embodiment provides a communication method, such as Figure 2 As shown, applied to a base station, the method may include:

[0037] S101. Receive transmission blocks TB sent by a remote terminal and a relay terminal through two links respectively; wherein the TB sent by the relay terminal is a replicated TB that is copied by the remote terminal at the media access control MAC layer and sent to the relay terminal through a side link.

[0038] In the embodiment of the present application, the remote terminal replicates the TB at the MAC layer, converts a TB into a TB with different redundant versions (RV) numbers, and then the remote terminal sends the replicated TB to the relay terminal through the side link communication, and 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 utilization rate of physical layer resources can be improved, the scheduling flexibility can be improved, the bit error rate can be reduced, and the demodulation performance can be improved.

[0039] For a schematic diagram of terminal aggregation at the physical layer, see Figure 3 The remote terminal transmits the copied TB to the relay terminal at the L1 layer. The relay terminal receives the TB through the fifth-generation interface (PCI-Express, PC5) and then sends it to the base station; the remote terminal also sends the TB to the base station.

[0040] S102: When a TB received through one link is successfully demodulated and a TB received through another link is not successfully demodulated, a data retransmission prohibition instruction is sent to a transmitter that sends the TB through another link, or the transmitter is not instructed to retransmit data.

[0041] It should be noted that in the present application, since the two links transmit the same TB, the base station only needs to correctly receive the data on one of the links. This can solve the problem in the prior art that when the data on a direct link is always incorrect, it will be repeatedly retransmitted until the maximum number of retransmissions is reached, resulting in serious waste of resources and reduced throughput.

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

[0043] It should be noted that when the base station successfully receives and demodulates the TB of a link, it obtains the RV number of the response. If the TB received from another link fails to be decoded at the MAC layer, the base station learns from the RV number that the unsuccessfully demodulated TB has been successfully demodulated on another link, and the same data on this link does not need to be retransmitted if demodulation fails. Therefore, the MACCE can carry an instruction to prohibit retransmission of the TB, indicating that the base station has received the TB from another terminal in the terminal aggregation and does not need to send it repeatedly.

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

[0045] In another optional embodiment, the process of sending a data retransmission prohibition instruction to the sending end that sends the TB through the other link may include: sending a radio link control sublayer RLC status report carrying the retransmission prohibition instruction to the sending end.

[0046] It should be noted that when the base station successfully receives and demodulates a link TB, if the SN number of the RLC PDU received from another link is missing, it means that the RLC PDU (or its segment) of the sender has not been successfully received, and when the query bit indicates that feedback is required, the RLC layer can send a status report including a status PDU to the sender to indicate which RLC SDUs have been successfully received and which RLC SDUs have not been successfully received. In addition, the status report also contains a signaling prohibiting retransmission of the TB, indicating that the base station has received the TB from another terminal aggregated by the UE and does not need to be retransmitted. Therefore, the sender does not need to perform retransmission operations based on the time window judgment, saving resources, reducing latency, and no RLF will occur.

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

[0048] For the above two optional embodiments, if the sending end is a relay terminal, the transmission path for sending the prohibit data retransmission instruction to the sending end that sends TB through the other link can be: sending the prohibit data retransmission instruction to the relay terminal through the direct link between the relay terminal.

[0049] With respect to the above optional embodiment, if the TB transmission of the relay terminal fails, the base station may send a prohibition retransmission instruction to the relay terminal through a direct link between the base station and the relay terminal.

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

[0051] In another optional embodiment described above, if the TB transmission of the relay terminal fails, the base station may send a prohibition retransmission instruction to the terminal through a 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 on the UU link of the relay terminal fails to be sent, the base station sends an RLC status report carrying a prohibition of retransmission instruction to the relay terminal. The relay terminal can know by receiving the instruction that the TB just sent was not successfully received by the base station, but because the base station has successfully received the same TB on another link, there is no need to retransmit the TB again.

[0053] For the above two optional embodiments, if the sending end is a remote terminal, the transmission path for sending the prohibit data retransmission instruction to the sending end that sends TB through the other link can be: sending the prohibit data retransmission instruction to the remote terminal through the direct link between the remote terminal and the remote terminal.

[0054] For the above two optional embodiments, if the sending end is a remote terminal, the transmission path for sending the prohibit data retransmission instruction to the sending end that sends TB through the other link can also be: forwarding the prohibit retransmission instruction to the remote terminal through the relay terminal.

[0055] For the above-mentioned optional embodiment, if the TB sending of the remote terminal fails, the base station can send a MAC CE carrying a prohibition of retransmission instruction to the remote terminal through the following two paths: the first is to transmit the MAC CE to the remote terminal through a direct link between the base station and the remote terminal; the other is that the base station first sends the MAC CE to the relay terminal, 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 on the UU link of the remote terminal fails to be sent, the base station sends a MAC CE indication carrying a prohibition of retransmission instruction to the remote terminal on the direct link between the base station and the remote terminal, so that the remote terminal can know by receiving the instruction: the TB just sent was not successfully received by the base station, but because the base station has successfully received the same TB on another link, there is no need 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 on the UU link of the remote terminal fails to be sent, the base station sends a MAC CE instruction carrying a prohibition of retransmission instruction to the relay terminal. The relay terminal forwards the signaling and transmits it to the remote terminal through the PC5 link. The remote terminal can know by receiving the instruction that the TB just sent was not successfully received by the base station, but because the base station has successfully received the same TB on another link, there is no need to retransmit the TB again.

[0058] For the above-mentioned another optional embodiment, if the TB sending of the remote terminal fails, the base station can send an RLC status report carrying a prohibition of retransmission instruction to the remote terminal through the following two paths: the first is to transmit the RLC status report to the remote terminal through a 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, 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 on the UU link of the remote terminal fails to be sent, the base station sends an RLC status report instruction carrying a prohibition of retransmission instruction to the remote terminal on the direct link between the base station and the remote terminal. The remote terminal can know by receiving the instruction that the TB just sent was not successfully received by the base station, but because the base station has successfully received the same TB on another link, there is no need to retransmit the TB again.

[0060] Specifically, when the base station successfully receives the TB through the UU link of the relay terminal, but the TB on the UU link of the remote terminal fails to be sent, the base station sends an RLC status report instruction carrying a prohibition of retransmission instruction to the relay terminal. The relay terminal forwards the signaling and transmits it to the remote terminal through the PC5 link. The remote terminal can know by receiving the instruction that the TB just sent was not successfully received by the base station, but because the base station has successfully received the same TB on another link, there is no need to retransmit the TB again.

[0061] In another optional embodiment, the process of not instructing the transmitting end to retransmit data may include: not sending a negative response instruction of the MAC layer to the transmitting end or not carrying the problem sequence number in the RLC status report.

[0062] It should be noted that the above two optional embodiments describe methods for explicitly indicating prohibition of retransmission, while another optional embodiment describes a method for implicitly indicating prohibition of retransmission, that is, when the base station has successfully received the TB of a link and learned 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, so the base station does not need to send a MAC instruction or the RLC status contains the SN number with the problem. Therefore, in the uplink data replication scenario of terminal physical layer aggregation, if the TB of one link is successfully received by the base station (that is, the link will receive the MAC or RLC status report sent by the base station). The other link does not need to perceive whether the currently transmitted TB packet is correct. If it is correct, the TB packet is used for data replication; if it is wrong, it is handled by the base station, and the terminal does not need to perceive it. If the retransmission instruction of the base station is not received, there is no need to retransmit. This method can reduce the signaling overhead, and the base station can solve the problem of repeated retransmission of the terminal without sending instructions to 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 NACK instruction of the MAC layer or indicate the problematic SN number in the status report of the RLC layer. The relay terminal does not perceive the transmitted TB and does not receive the retransmission indication from the base station, so there is no need to retransmit the TB block.

[0064] It can be understood that implementing UE aggregation at the physical layer can send TB on the same or different time-frequency resources, thereby improving the physical layer gain. As long as the base station successfully receives and demodulates the TB through one link, there is no need for the transmitter corresponding to another link to retransmit the data, thereby reducing the number of data retransmissions, thereby reducing latency and resource overhead, and saving terminal power.

[0065] Based on the above embodiments, the present application also proposes a communication method, such as Figure 4 As shown, applied to a terminal, the method may include:

[0066] S201. The remote terminal replicates the TB at the physical layer, and sends the replicated TB to the relay terminal via the side link; so that the relay terminal sends the replicated TB to the base station via the link between the relay terminal and the base station.

[0067] In some embodiments, the terminal device may be referred to as User Equipment (UE). The terminal device may 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 may also be a smart phone, a tablet computer, a PDA, a Mobile Station (MS), a Mobile Terminal, etc. The terminal device may communicate with one or more network devices via a Radio Access Network (RAN). For example, the terminal device may be a mobile phone (or a "cellular" phone) or a computer with a terminal device, etc. For example, the terminal device may also be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges voice and / or data with a wireless access network. The terminal device may 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 a future evolving network, etc., which is not limited in the implementation of this application.

[0068] In the embodiment of the present application, when the remote terminal performs data replication in the uplink, the same TB is sent to the relay terminal. The relay terminal receives the TB through the PC5 link between the remote terminal and then sends it to the base station.

[0069] S202. The remote terminal sends a TB to the base station through the link between the remote terminal and the base station; so that when the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, the base station sends a data retransmission prohibition instruction to the sending end that sends the TB through another link, or does not instruct the sending end to retransmit data.

[0070] In the embodiment of the present application, the remote terminal also sends TB to the base station through the 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, the base station only 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 implementing UE aggregation at the physical layer can send TB on the same or different time-frequency resources, thereby improving the physical layer gain. As long as the base station successfully receives and demodulates the TB through one link, there is no need for the transmitter corresponding to the other link to retransmit the data, thereby reducing the number of data retransmissions and thus reducing latency and resource overhead.

[0073] The present application embodiment provides a base station. Figure 5 As shown, the base station 1 includes:

[0074] The receiving unit 10 is used 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 TB copied by the remote terminal at the physical layer and sent to the relay terminal through the side link;

[0075] The first sending unit 11 is used to send a data retransmission prohibition instruction to the sending end that sends the TB through the other link, or not instruct the sending end to retransmit data, when the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated.

[0076] Optionally, the first sending unit 11 is further configured to send 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 used to send 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 used for not sending a negative response instruction of the MAC layer to the sending end or not carrying a problem sequence number in the RLC status report.

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

[0080] The first sending unit 11 is further configured to send the data retransmission prohibition instruction to the relay terminal via a direct link between the first sending unit 11 and the relay terminal.

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

[0082] The first sending unit 11 is further configured to send the data retransmission prohibition instruction to the remote terminal via a direct link between the first sending unit 11 and the remote terminal.

[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 via the relay terminal.

[0085] A base station provided in an embodiment of the present application receives transmission blocks 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 that is copied by the remote terminal at the MAC layer and sent to the relay terminal through a side link; when the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated, a data retransmission prohibition instruction is issued to the sender that sends the TB through another link, or the sender is not instructed to retransmit data. It can be seen that the base station proposed in this embodiment can send TB on the same or different time-frequency resources when UE aggregation is implemented at the physical layer, thereby improving the physical layer gain, and as long as the base station successfully receives and demodulates the TB through one link, there is no need for the sender corresponding to the other link to retransmit data, thereby reducing the time for data retransmission, thereby reducing latency and resource overhead.

[0086] Figure 6 A schematic diagram of the structure of a base station 1 provided in an embodiment of the present application Figure 2 In practical applications, based on the same disclosure concept of the above embodiments, Figure 6 As shown, the base station 1 of this embodiment includes: a first processor 12 , a first memory 13 and a first communication bus 14 .

[0087] In the process of a specific embodiment, the first processor 12 may be at least one of an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing image processing device (DSPD), a programmable logic image processing 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 above-mentioned processor function can also be other, which is not specifically limited in this embodiment.

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

[0089] The transmission blocks TB sent by the remote terminal and the relay terminal are received respectively through two links; wherein the TB sent by the relay terminal is the copied TB that is copied by the remote terminal at the media access control MAC layer and sent to the relay terminal through the side link; in case that the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated, a data retransmission prohibition instruction is issued to the sending end that sends the TB through the other link, or the sending end is not instructed to retransmit data.

[0090] Furthermore, the first processor 12 is further configured to send a medium access control sublayer control element MAC CE carrying the retransmission prohibition instruction to the transmitting end.

[0091] Furthermore, the first processor 12 is further configured to send a radio link control sublayer RLC status report carrying the retransmission prohibition instruction to the transmitting end.

[0092] Furthermore, the first processor 12 is further configured not to send a negative response instruction of the MAC layer to the transmitting end or not to carry the problem sequence number in the RLC status report.

[0093] Furthermore, the transmitting end is the relay terminal,

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

[0095] Furthermore, the transmitting end is the remote terminal,

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

[0097] Furthermore, the transmitting end is the remote terminal,

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

[0099] The present application also provides a terminal, such as Figure 7 As shown, the terminal 2 includes:

[0100] The replication unit 20 is used for the remote terminal to replicate the TB at the physical layer and send the replicated TB to the relay terminal through the side link; so that the relay terminal sends the replicated TB to the base station through the link between the relay terminal and the base station;

[0101] The second sending unit 21 is used for the remote terminal to send a TB to the base station through the link between the remote terminal and the base station; so that when the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, the base station sends 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 retransmit data.

[0102] The embodiment of the present application provides a terminal, in which the remote terminal replicates the TB at the physical layer, and sends the replicated TB to the relay terminal through the side link; so that the relay terminal sends the replicated TB to the base station through the link between the relay terminal and the base station; the remote terminal sends the TB to the base station through the link between the base station; so that when the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, it sends a prohibition data retransmission instruction to the sender that sends the TB through another link, or does not instruct the sender to retransmit data. It can be seen that the terminal proposed in this embodiment can send TB on the same or different time-frequency resources to achieve UE aggregation at the physical layer, thereby improving the physical layer gain, and as long as the base station successfully receives and demodulates the TB through one link, there is no need for the sender corresponding to the other link to retransmit data, which reduces the time of data retransmission, thereby reducing latency and resource overhead.

[0103] Figure 8 A schematic diagram of the structure of a terminal 2 provided in an embodiment of the present application Figure 2 In practical applications, based on the same disclosure concept of the above embodiments, Figure 8 As shown, the terminal 2 of this embodiment includes: a second processor 22 , a second memory 23 and a second communication bus 24 .

[0104] In the process of a specific embodiment, the second processor 22 may be at least one of an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing image processing device (DSPD), a programmable logic image processing device (PLD), a field programmable gate array (FPGA), a CPU, a controller, a microcontroller, and a microprocessor. It is understandable that for different devices, the electronic device used to implement the above-mentioned processor function may also be other, which is not specifically limited in this 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; when the second processor 22 executes the running program stored in the second memory 23, the following communication method is implemented:

[0106] The remote terminal replicates the TB at the physical layer and sends the replicated TB to the relay terminal via the side link; so that the relay terminal sends the replicated TB to the base station via the link between the relay terminal and the base station; the remote terminal sends the TB to the base station via the link between the remote terminal and the base station; so that when the base station successfully demodulates the TB received via one link and fails to demodulate the TB received via another link, the base station sends a data retransmission prohibition instruction to the sending end that sends the TB via the other link, or does not instruct the sending end to retransmit data.

[0107] An embodiment of the present application provides a storage medium having a computer program stored thereon. 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. The computer program implements the communication method as described above.

[0108] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0109] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present disclosure, or the part that contributes to the relevant technology, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for enabling an image display device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0110] The above description is only a 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 in that: Applied to a base station, the method comprises: Receiving 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 TB copied by the remote terminal at the media access control MAC layer and sent to the relay terminal through the side link; When a TB received through one link is successfully demodulated and a TB received through another link is not successfully demodulated, a data retransmission prohibition instruction is sent to a transmitter that sends the TB through the other link, or the transmitter is not instructed to retransmit data.

2. The method according to claim 1, characterized in that The sending of a data retransmission prohibition instruction to a sending end that sends the TB through the other link includes: A medium access control sublayer control element MAC CE carrying the retransmission prohibition instruction is sent to the sending end.

3. The method according to claim 1, characterized in that The sending of a data retransmission prohibition instruction to a sending end that sends the TB through the other link includes: Sending a radio link control sublayer RLC status report carrying the retransmission prohibition instruction to the transmitting end.

4. The method according to claim 1, characterized in that: The not instructing the transmitting end to retransmit the data includes: No negative response instruction of the MAC layer is sent to the transmitting end, or the problem sequence number is not carried in the RLC status report.

5. The method according to claim 1, characterized in that The sending end is the relay terminal, and sending a data retransmission prohibition instruction to the sending end that sends the TB through the other link includes: The data retransmission prohibition instruction is sent to the relay terminal via a direct link with the relay terminal.

6. The method according to claim 1, characterized in that The sending end is the remote terminal, and sending a data retransmission prohibition instruction to the sending end that sends the TB through the other link includes: The data retransmission prohibition instruction is sent to the remote terminal via a direct link with the remote terminal.

7. The method according to claim 1, characterized in that The sending end is the remote terminal, and sending a data retransmission prohibition instruction to the sending end that sends the TB through the other link includes: The retransmission prohibition instruction is forwarded to the remote terminal through the relay terminal.

8. A communication method, characterized in that: Applied to a remote terminal, the method comprises: The remote terminal replicates the TB at the physical layer and sends the replicated TB to the relay terminal via the side link; so that the relay terminal sends the replicated TB to the base station via the link between the relay terminal and the base station; The remote terminal sends a TB to the base station via the link between the remote terminal and the base station; so that when the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, the base station sends 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 retransmit data.

9. A base station, characterized in that: The base station comprises: A receiving unit, configured to receive 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 replicated TB obtained by replicating the TB at the physical layer of the remote terminal and sending the replicated TB to the relay terminal through a side link; The first sending unit is used to send a data retransmission prohibition instruction to the sending end that sends the TB through the other link, or not instruct the sending end to retransmit data, when the TB received through one link is successfully demodulated and the TB received through another link is not successfully demodulated.

10. A terminal, characterized in that: The terminal comprises: A replication unit, used for the remote terminal to replicate the TB at the physical layer, and send the replicated TB to the relay terminal through the side link; so that the relay terminal can send the replicated TB to the base station through the link between the relay terminal and the base station; The second sending unit is used for the remote terminal to send a TB to the base station through the link between the remote terminal and the base station; so that when the base station successfully demodulates the TB received through one link and fails to demodulate the TB received through another link, the base station sends 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 retransmit data.

11. A base station, characterized in that: The base station includes: a first processor and a first memory; when the first processor executes the running program stored in the first memory, the method according to any one of claims 1 to 7 is implemented.

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

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

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