Replication transmission method and device, equipment, chip and storage medium

Abstract

The embodiment of the invention provides a copy transmission method, which is applied to a first device, one or more links exist between the first device and a second device, and one or more relay terminal devices exist on each link, and comprises the following steps: acquiring first information, the first information is used for determining whether to activate a packet data convergence protocol PDCP replication transmission mechanism of the first device, and the PDCP replication transmission mechanism is used for the first device to send the first data to the second device. According to the method, under the condition that each link between the first equipment and the second equipment is a non-direct link, activation control of a PDCP replication transmission mechanism of the first equipment can be realized.

Description

A copy transmission method, device, equipment, chip and storage medium Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and specifically to a copy transmission method, apparatus, device, chip, and storage medium. Background Art

[0002] In a UE-to-Network (U2N) relay scenario, each link between the remote terminal and the network can be an indirect link. This effectively improves data transmission reliability and throughput for terminals outside the network's coverage area. However, since there is no direct link between the remote terminal and the network, there is a need to address the issue of how to activate the Packet Data Convergence Protocol (PDCP) duplicate transmission mechanism in this scenario.

[0003] Summary of the Invention

[0004] Embodiments of the present application provide a method, apparatus, device, chip, and storage medium for copy transmission.

[0005] In the first aspect, an embodiment of the present application provides a replication transmission method, which is applied to a first device, where there are one or more links between the first device and the second device, and there are one or more relay terminal devices on each link. The method includes: obtaining first information, where the first information is used to determine whether to activate the Packet Data Convergence Protocol PDCP replication transmission mechanism of the first device, and the PDCP replication transmission mechanism is used by the first device to send first data to the second device.

[0006] In the second aspect, an embodiment of the present application provides a replication transmission method, which is applied to a second device. There are one or more links between the first device and the second device, and there are one or more relay terminal devices on each link. The method includes: sending first information to the first device, and the first information is used to determine whether to activate the Packet Data Convergence Protocol PDCP replication transmission mechanism of the first device. The PDCP replication transmission mechanism is used by the first device to send first data to the second device.

[0007] In the third aspect, an embodiment of the present application provides a replication transmission method, which is applied to a first relay terminal device, the first relay terminal device is located on a first link between a first device and a second device, the first relay terminal device is directly connected to the first device, there are one or more links between the first device and the second device, and there are one or more relay terminal devices on each link, the method comprising: sending first information to the first device, the first information being used to determine whether to activate a packet data convergence protocol PDCP replication transmission mechanism of the first device, the replication transmission mechanism being used by the first device to send first data to the second device.

[0008] In the fourth aspect, an embodiment of the present application provides a replication transmission device, wherein there are one or more links between the device and a second device, and there are one or more relay terminal devices on each link. The device includes: an acquisition unit, configured to obtain first information, the first information is used to determine whether to activate the packet data convergence protocol PDCP replication transmission mechanism of the device, and the PDCP replication transmission mechanism is used by the device to send first data to the second device.

[0009] In the fifth aspect, an embodiment of the present application provides a replication transmission device, wherein there are one or more links between a first device and the device, and there are one or more relay terminal devices on each link. The device includes: a first sending unit, configured to send first information to the first device, the first information is used to determine whether to activate the Packet Data Convergence Protocol PDCP replication transmission mechanism of the first device, and the PDCP replication transmission mechanism is used by the first device to send first data to the device.

[0010] In the sixth aspect, an embodiment of the present application provides a replication transmission device, which is located on a first link between a first device and a second device. The device is directly connected to the first device. There are one or more links between the first device and the second device. There are one or more relay terminal devices on each link. The device includes: a second sending unit, configured to send first information to the first device, the first information is used to determine whether to activate the packet data convergence protocol PDCP replication transmission mechanism of the first device, and the replication transmission mechanism is used by the first device to send first data to the second device.

[0011] In a seventh aspect, an embodiment of the present application provides a communication device, comprising a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the method described in any one of the first to third aspects.

[0012] In an eighth aspect, an embodiment of the present application provides a chip, comprising: a processor configured to call and execute a computer program from a memory, so that a device equipped with the chip executes the method described in any one of the first to third aspects.

[0013] In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium for storing a computer program, which enables a computer to execute the method described in any one of the first to third aspects.

[0014] In a tenth aspect, an embodiment of the present application provides a computer program product, comprising computer program instructions, which enable a computer to execute the method described in any one of the first to third aspects.

[0015] In an eleventh aspect, an embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the method described in any one of the first to third aspects.

[0016] In this method, multiple links exist between a first device and a second device, and one or more relay terminal devices exist on each link. The first device can obtain first information and, based on the first information, determine whether to activate a PDCP duplicate transmission mechanism for the first device. This PDCP duplicate transmission mechanism can be used by the first device to send first data to the second device. This allows activation control of the PDCP duplicate transmission mechanism for the first device even when each link between the first device and the second device is a non-direct link. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] FIG1-1 is a schematic diagram of resource selection corresponding to the first mode provided in an embodiment of the present application;

[0019] Figure 1-2 is a schematic diagram of resource selection corresponding to the second mode provided in an embodiment of the present application;

[0020] FIG2 is a schematic diagram of a user plane protocol stack of a sideline L2 U2N relay architecture provided in an embodiment of the present application;

[0021] FIG3 is a schematic diagram of a user plane protocol stack of an L2 multipath relay based on a side link provided in an embodiment of the present application;

[0022] FIG4 is a schematic diagram of an example of a user plane protocol stack for a multipath U2N relay scenario provided in an embodiment of the present application;

[0023] FIG5 is a schematic diagram of a flow chart of a copy transmission method provided in an embodiment of the present application;

[0024] FIG6 is a schematic diagram of an example of the format of a PDCP control PDU provided in an embodiment of the present application;

[0025] 7 is a schematic diagram of a process of activating / deactivating a PDCP duplicate transmission mechanism according to control signaling according to an embodiment of the present application;

[0026] FIG8 is a schematic diagram of an example of the format of a MAC CE sent by a network according to an embodiment of the present application;

[0027] FIG9 is a schematic diagram of an example of the format of an RLC control PDU or SRAP control PDU sent by a network according to an embodiment of the present application;

[0028] FIG10 is a schematic diagram of an example of the format of an RLC control PDU or SRAP control PDU sent by a relay terminal according to an embodiment of the present application;

[0029] FIG11 is a schematic diagram of the first structure of the copy transmission device provided in an embodiment of the present application;

[0030] FIG12 is a second schematic diagram of the structure of the copy transmission device provided in an embodiment of the present application;

[0031] FIG13 is a third schematic diagram of the structure of the copy transmission device provided in an embodiment of the present application;

[0032] FIG14 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0033] FIG15 is a schematic structural diagram of a chip according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] The technical solutions of the embodiments of the present application can be applied to various side communication systems. To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are explained below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0036] 1. Device to Device (D2D) / Vehicle to Everything (V2X) in Long Term Evolution (LTE)

[0037] Device-to-device communication is a sidelink (SL) transmission technology based on D2D. Unlike traditional cellular systems, where communication data is received or transmitted via base stations, the connected vehicle system uses direct end-to-end communication, resulting in higher spectrum efficiency and lower transmission latency. The 3rd Generation Partnership Project (3GPP) defines two transmission modes: Mode 1 (Mode 3) and Mode 2 (Mode 4).

[0038] Mode 1: The terminal's transmission resources are allocated by the base station (eNB). The terminal transmits data on the sidelink based on the allocated resources. The base station can allocate resources for a single transmission or for semi-static transmission. As shown in Figure 1-1, the terminal's transmission resources are allocated by the base station. The base station allocates resources to the terminal via downlink based on grant signaling (Grant). The terminal transmits data on the sidelink based on the allocated resources.

[0039] Second mode: The terminal selects a resource in the resource pool for data transmission. As shown in Figure 1-2, the terminal selects a resource in the resource pool for data transmission.

[0040] In 3GPP, D2D is divided into the following different phases for research:

[0041] 1) Proximity-based Service (ProSe): In Rel-12 / 13, device-to-device communication was studied for ProSe scenarios, primarily targeting public safety services.

[0042] In ProSe, by configuring the position of the resource pool in the time domain, for example, the resource pool is non-continuous in the time domain, the UE can transmit / receive data discontinuously on the sidelink, thereby achieving power saving.

[0043] 2) V2X: In Rel-14 / 15, the vehicle-to-vehicle (V2X) system studied vehicle-to-vehicle (V2V) communication scenarios, primarily targeting relatively high-speed vehicle-to-vehicle and vehicle-to-pedestrian communication services.

[0044] In V2X, since the on-board system has continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue. Therefore, the system design requires the terminal equipment to perform continuous transmission and reception.

[0045] 3) Wearable devices (FeD2D): In Rel-14, this scenario studies the scenario of wearable devices accessing the network through mobile phones, which is mainly aimed at scenarios with low mobile speed and low power access.

[0046] In FeD2D, during the pre-research phase, 3GPP concluded that a base station can configure the discontinuous reception (DRX) parameters of a remote terminal through a relay terminal, but did not provide a conclusion on the specific details of how to perform DRX configuration.

[0047] 2. New Radio (NR) V2X

[0048] Based on LTE V2X, NR V2X is not limited to broadcast scenarios, but has been further expanded to unicast and multicast scenarios, and the application of V2X is studied in these scenarios.

[0049] Similar to LTE V2X, NR V2X also defines two resource authorization modes: mode-1 / 2 (i.e., the first mode and the second mode mentioned above). Furthermore, the user may be in a mixed mode, that is, they can use mode-1 to acquire resources and mode-2 to acquire resources at the same time. Unlike LTE V2X, in addition to the feedback-free, UE-initiated Hybrid Automatic Repeat reQuest (HARQ) retransmission, NR V2X introduces feedback-based HARQ retransmission, which is not limited to unicast communication, but also includes multicast communication.

[0050] 3. Sideline L2 U2N relay technology

[0051] Figure 2 shows the user plane protocol stack for the sidelink L2 U2N relay architecture. For L2 U2N relay, the Sidelink Relay Adaptation Protocol (SRAP) sublayer sits above the Radio Link Control (RLC) sublayers of the control and user planes at the PC5 and Uu interfaces. The Service Data Adaptation Protocol (SDAP), PDCP, and Radio Resource Control (RRC) sublayers of the Uu interface terminate between the remote UE and the gNB of the U2N relay, while the SRAP, RLC, MAC, and Physical Layer (PHY) sublayers terminate on each link (i.e., the link between the remote UE of the U2N relay and the U2N relay UE, and the link between the U2N relay UE and the gNB).

[0052] FIG3 shows a user plane protocol stack of a sidelink-based L2 multipath (MP) relay.

[0053] 4. PDCP copy transmission mechanism

[0054] For signaling radio bearers (SRBs), duplicate transmission is always in the active state. For data radio bearers (DRBs), the active state can be enabled or disabled by the network through RRC signaling and then through the Media Access Control (MAC) Control Element (MAC CE). Using RRC configuration signaling, the value of the pdcp-Duplication IE in the PDCP configuration information (PDCP-Config) can be set to 'true' or 'false', indicating whether duplicate transmission is configured for the DRB. For radio bearers (RBs) configured with duplicate transmission by RRC, the network further enables / disables duplicate transmission of the bearer's data packets by sending a duplication activation / deactivation MAC CE. The value of the i-th bit (0 / 1) indicates that the terminal needs to deactivate / activate the i-th DRB (the corresponding DRB ID is the ID of the i-th DRB in ascending order among the multiple DRBs configured with the PDCP-duplication IE corresponding to the cell group). When PDCP packet duplication transmission is not activated or deactivated (via MAC CE or RRC signaling), the primary RLC entity and logical channel will still be responsible for packet transmission, while the secondary RLC entity and logical channel will not be used for packet duplication transmission.

[0055] The above briefly explains the relevant technologies / terms involved in the embodiments of this application, which will not be repeated in the following embodiments.

[0056] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document is merely a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the objects associated before and after are in an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B. It should also be understood that the "correspondence" mentioned in the embodiments of this application can mean that there is a direct or indirect correspondence between the two, or it can mean that there is an association relationship between the two, or it can mean a relationship between indication and indication, configuration and configuration, etc. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). This application does not limit its specific implementation method.

[0057] It should also be understood that the embodiments of the present application do not limit the specific forms of terminal devices and network devices.

[0058] The terminal device (or terminal) in the embodiments of the present application may refer to an access terminal, user equipment (UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0059] The network device in the embodiment of the present application may be an evolved base station (eNB or eNodeB) in an LTE system, or a next generation radio access network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a cloud radio access network (CRAN), or the network device 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (PLMN).

[0060] In U2N relay scenarios, one or more links between the remote terminal and the network can be indirect links. This effectively improves data transmission reliability and throughput for terminals outside the network's coverage area. However, since there is no direct link between the remote terminal and the network, there is a need to address the issue of how to activate the PDCP duplicate transmission mechanism in this scenario.

[0061] Currently, the network can control the terminal to activate the PDCP duplicate transmission mechanism by sending a MAC CE to the terminal. However, in the U2N (L2 U2N) relay scenario, the MAC entity exists on each hop of the link between the network and the relay, and on each hop of the link between the relay and the remote terminal, but there is no MAC entity from the network to the remote terminal, while the PDCP entity is between the network and the remote terminal. Therefore, in the U2N relay scenario (for example, in the multipath U2N relay scenario), if each link between the remote terminal and the network is not directly connected, the activation of the PDCP duplicate transmission mechanism in the scenario cannot be controlled by the existing MAC CE mechanism. In other words, in the U2N relay scenario, if each link between the remote terminal and the network is not directly connected, it is not clear how to control the activation of the PDCP duplicate transmission mechanism.

[0062] Taking the multipath U2N relay scenario as an example, Figure 4 shows a schematic diagram of the user plane protocol stack for this scenario. As shown in Figure 4, two links (paths) exist between the remote terminal and the network (gNB), with a relay terminal on each link. For example, relay terminal #1 exists on link #1, and relay terminal #2 exists on link #2. In other words, both links between the remote terminal and the network are indirect links. Since there is no MAC entity from the network to the remote terminal, while the PDCP entity exists between the network and the remote terminal, the activation of the PDCP duplicate transmission mechanism in this scenario cannot be controlled using the existing MAC CE mechanism.

[0063] It should be noted that the number of links between the remote terminal and the network in Figure 4 is only exemplary. For example, in some other scenarios, there may be one link between the remote terminal and the network, or there may be three or more links, which is not limited in this embodiment of the present application.

[0064] It should also be noted that the number of relay terminals on each link in FIG4 is merely exemplary. For example, in some other scenarios, the number of relay terminals on each link may be greater than one.

[0065] In view of this, the present application provides a replication transmission method, apparatus, device, chip and storage medium. In this method, there are multiple links between a first device and a second device, and there are one or more relay terminal devices on each link. The first device can obtain first information, and thus determine whether to activate the PDCP replication transmission mechanism of the first device based on the first information. The PDCP replication transmission mechanism can be used by the first device to send first data to the second device. In this way, the activation control of the PDCP replication transmission mechanism of the first device can be achieved when each link between the first device and the second device is a non-direct link.

[0066] For example, in the embodiments of the present application, the first device may be a terminal device (e.g., a remote terminal device), and the second device may be a network device (e.g., a base station). In this case, the method may be applicable to a U2N relay scenario. Alternatively, both the first device and the second device may be terminal devices (e.g., a remote terminal device), in which case the method may be applicable to a U2U relay scenario.

[0067] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0068] FIG5 is a flow chart of a replication transmission method provided by an embodiment of the present application. In this method, one or more links (paths) may exist between the first device and the second device, and one or more relay terminal devices may exist on each link. As shown in FIG5 , the method may include the following steps:

[0069] S501: A first device obtains first information, where the first information is used to determine whether to activate a PDCP duplicate transmission mechanism of the first device, where the PDCP duplicate transmission mechanism is used by the first device to send first data to a second device.

[0070] Activating the PDCP duplicate transmission mechanism (such as activating the PDCP duplicate transmission mechanism of the first device) can also be understood as turning on the PDCP duplicate transmission mechanism. In some scenarios, the PDCP duplicate transmission mechanism can also be replaced by PDCP duplicate transmission, duplicate transmission, or duplicate transmission mechanism.

[0071] In this embodiment, the first device may obtain the first information, and thereby determine whether to activate the PDCP duplicate transmission mechanism of the first device based on the first information. The PDCP duplicate transmission mechanism may be used by the first device to send the first data to the second device.

[0072] In some embodiments, the first information may be from an upper layer of the first device, and the first information may be used to indicate whether to activate the PDCP duplicate transmission mechanism; or, if the first data is of a specific service type, to activate the PDCP duplicate transmission mechanism. In other words, the first device may determine whether to activate the PDCP duplicate transmission mechanism based on the upper layer indication.

[0073] In one example, the first information is used to indicate whether to activate the PDCP duplicate transmission mechanism. That is, the upper layer may explicitly indicate whether to activate the PDCP duplicate transmission mechanism. For example, if the first information indicates to activate the PDCP duplicate transmission mechanism, the first device may activate the PDCP duplicate transmission mechanism.

[0074] In another example, the first information is used to indicate that the PDCP duplicate transmission mechanism is activated when the first data is of a specific service type (e.g., a high reliability and low latency type, a voice data type, a non-voice data type, etc.). For example, if the first information indicates that the PDCP duplicate transmission mechanism is activated when the first data is voice data, then if the first data to be sent by the first device is voice data, the first device may activate the PDCP duplicate transmission mechanism and send the first data to the second device based on the PDCP duplicate transmission mechanism.

[0075] In some embodiments, the first information may include a packet error rate (PER), and when the PER is less than or equal to a first threshold, the PDCP duplicate transmission mechanism is activated.

[0076] Exemplarily, when the first data is a DRB (denoted as the first DRB), the PER may be the minimum, maximum, or average value of the PERs in the Quality of Service (QoS) flows associated with the first DRB. For example, the first DRB may be associated with one or more QoS flows, and the PER may be the minimum, maximum, or average value of the PERs in the one or more QoS flows.

[0077] It can be understood that if the PER is less than or equal to the first threshold, it may indicate that the reliability requirement for data transmission is high. Therefore, the first device may activate the PDCP duplicate transmission mechanism to improve the reliability of sending the first data to the second device.

[0078] In some embodiments, the first threshold may be configurable, for example, by the network.

[0079] In some embodiments, the first threshold is related to one or more of the following information a) to e):

[0080] a) First QoS parameter.

[0081] As an example, the first QoS parameter may include: the priority of the first data; and / or the packet delay budget (PDB). Taking the example of the first QoS parameter including the priority of the first data, a higher priority of the first data indicates a higher requirement for transmission reliability of the first data. Therefore, the first threshold may be relatively large to more easily meet the condition that the PER is less than or equal to the first threshold. In other words, it is easier to meet the condition for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data transmitted by the first device to the second device.

[0082] b) First measurement value.

[0083] As an example, the first measurement value may include: a congestion level of a resource pool; and / or a signal quality.

[0084] Taking the first measurement value including the resource pool congestion level as an example, it can be understood that when the resource pool congestion level is high, the copy transmission of data should be restricted to control the overall data flow. Therefore, the higher the resource pool congestion level, the smaller the first threshold can be, so that the conditions for activating the PDCP copy transmission mechanism are more difficult to achieve.

[0085] Taking the first measurement value including signal quality as an example, it can be understood that the worse the signal quality, the more unstable the link. Therefore, in the case of poor signal quality, the first threshold may be relatively large to make it easier to meet the conditions for activating the PDCP copy transmission mechanism, so as to improve the reliability of the first device sending the first data to the second device.

[0086] c) The number of relay terminal devices.

[0087] In some embodiments, a greater number of relay terminal devices indicates a higher probability of data transmission failure. Therefore, in this case, the first threshold may be relatively large to make it easier to meet the conditions for activating the PDCP replication transmission mechanism, thereby improving the success rate of data transmission.

[0088] In some embodiments, a greater number of relay terminal devices indicates more resources occupied. Therefore, in this case, data copy transmission should be limited. Therefore, the first threshold may be relatively small to make the conditions for activating the PDCP copy transmission mechanism more difficult to achieve.

[0089] d) A method for the first device (the first device is a terminal device) to obtain transmission resources.

[0090] In some embodiments, if the first device obtains transmission resources in mode 1, that is, the transmission resources of the first device are allocated by the base station, in this case, it can be considered that the probability of resource collision of the transmission resources is low and the data transmission reliability is relatively high. Therefore, there is no need to activate the PDCP copy transmission mechanism. Therefore, the first threshold can be relatively small to make the conditions for activating the PDCP copy transmission mechanism more difficult to achieve.

[0091] In some embodiments, if the first device obtains transmission resources in mode 2, that is, the first device selects a resource in the resource pool to transmit data, in this case, it can be considered that the probability of resource collision of the transmission resources is high and the data transmission reliability is relatively low. Therefore, it is necessary to activate the PDCP copy transmission mechanism. Therefore, the first threshold can be relatively large to make the conditions for activating the PDCP copy transmission mechanism easier to meet.

[0092] e) RLC mode.

[0093] For example, when the RLC mode is Acknowledge Mode (AM), since AM supports feedback, it is beneficial to ensure the reliability of data transmission, so there is no need to activate the PDCP duplicate transmission mechanism. Therefore, the first threshold can be relatively small to make the conditions for activating the PDCP duplicate transmission mechanism more difficult to achieve.

[0094] According to the above technical solution, the first device can determine whether to activate the PDCP duplicate transmission mechanism by comparing the PER and the first threshold, and the first threshold can be related to one or more of the information in a) to e) above. Therefore, the first device can determine whether to activate the PDCP duplicate transmission mechanism based on a comprehensive consideration of multiple factors such as the PER to meet corresponding data transmission requirements.

[0095] In some embodiments, when multiple links exist between a first device and a second device, the first information may include: a data transmission result received by the first device on a first link among the multiple links within a first duration; the data transmission result may come from a first relay terminal device on the first link, which is directly connected to the first device. In other words, the first relay terminal device on the first link may send the data transmission result (first information) within the first duration to the first device, and the first device may receive the data transmission result and determine whether to activate the PDCP duplicate transmission mechanism based on the transmission result.

[0096] In the embodiment of the present application, the first relay terminal device is directly connected to the first device, which can also be understood as the number of hops from the first device to the first relay terminal device is one hop (per-hop).

[0097] Exemplarily, the first link may be any link between the first device and the second device, or may be a specific link between the first device and the second device. The specific path may be configured by the network, or may be a main link (primary path).

[0098] In some embodiments, the PDCP copy transmission mechanism is activated when a first condition is met. The first condition may include: the data transmission result (i.e., the data transmission result within the above-mentioned first time length) includes a first number of consecutive non-affirmative feedbacks; or, the data transmission result includes a first number of non-affirmative feedbacks.

[0099] In one example, the first condition may include: the data transmission result includes a first number (e.g., N) of consecutive non-acknowledged feedback. That is, if within a first duration, the first device continuously receives at least a first number (e.g., at least N) of non-acknowledged feedback (e.g., NACK, or no ACK) from the first relay terminal device on the first link, the PDCP duplicate transmission mechanism may be activated.

[0100] In another example, the first condition may include: the data transmission result includes a first number (e.g., N) of non-positive feedback. That is, if within a first time duration, the first device receives at least a first number (e.g., at least N) of non-positive feedback (e.g., NACK, or no ACK) from the first relay terminal device on the first link, the PDCP duplicate transmission mechanism may be activated.

[0101] In some embodiments, when a link exists between a first device and a second device, the first information may include: a data transmission result received by the first device on the link within a first duration; the data transmission result may come from a first relay terminal device on the link, and the first relay terminal device is directly connected to the first device. In other words, the first relay terminal device on the link may send the data transmission result (first information) within the first duration to the first device, and the first device may receive the data transmission result and determine whether to activate the PDCP duplicate transmission mechanism based on the transmission result.

[0102] In some embodiments, the PDCP copy transmission mechanism is activated when a first condition is met. The first condition may include: the data transmission result (i.e., the data transmission result within the above-mentioned first time length) includes a first number of consecutive non-affirmative feedbacks; or, the data transmission result includes a first number of non-affirmative feedbacks.

[0103] In one example, the first condition may include: the data transmission result includes a first number (e.g., N) of consecutive non-acknowledged feedback. In other words, if, within a first duration, the first device continuously receives at least a first number (e.g., at least N) of non-acknowledged feedback (e.g., NACK, or no ACK) from the first relay terminal device on the link, the PDCP duplicate transmission mechanism may be activated.

[0104] In another example, the first condition may include: the data transmission result includes a first number (e.g., N) of non-acknowledged feedback. That is, if within a first duration, the first device receives at least a first number (e.g., at least N) of non-acknowledged feedback (e.g., NACK, or no ACK) from the first relay terminal device on the link, the PDCP duplicate transmission mechanism may be activated.

[0105] In some embodiments, when there are multiple links between the first device and the second device, the first information may include: data transmission results received by the first device on at least two of the multiple links within a first time period; data transmission results received by the first device on each of the at least two links, from a first relay terminal device on the link, and the first relay terminal device is directly connected to the first device.

[0106] For example, assuming there are two links between a first device and a second device, namely link #1 and link #2, the first information may include: the data transmission result received by the first device on link #1 within a first duration, and the data transmission result received by the first device on link #2 within the first duration. The data transmission result received by the first device on link #1 comes from the first relay terminal device on link #1, and the data transmission result received by the first device on link #2 comes from the first relay terminal device on link #2.

[0107] In some embodiments, the PDCP copy transmission mechanism is activated when the second condition is met, and the second condition may include: each data transmission result includes a first number of consecutive non-affirmative feedbacks; or, each data transmission result includes a first number of non-affirmative feedbacks; or, the sum of the number of consecutive non-affirmative feedbacks included in each data transmission result reaches a first number; or, the sum of the number of non-affirmative feedbacks included in each data transmission result reaches a first number.

[0108] In one example, the first condition may include: each data transmission result includes a first number (eg, N) of consecutive non-positive feedbacks.

[0109] For example, assuming that there are two links between the first device and the second device, namely link #1 and link #2, then if within a first time period, the first device continuously receives at least a first number (such as at least N) of non-positive feedback from the first relay terminal device of link #1, and also continuously receives at least a first number (such as at least N) of non-positive feedback from the first relay terminal device of link #2, the PDCP copy transmission mechanism can be activated.

[0110] In another example, the first condition may include: each data transmission result includes a first number of non-positive feedbacks.

[0111] For example, assuming that there are two links between the first device and the second device, namely link #1 and link #2, then if within a first time period, the first device receives at least a first number (such as at least N) of non-positive feedback from the first relay terminal device of link #1, and also receives at least a first number (such as at least N) of non-positive feedback from the first relay terminal device of link #2, the PDCP copy transmission mechanism can be activated.

[0112] In another example, the first condition may include: a sum of the numbers of consecutive non-positive feedbacks included in each data transmission result reaches a first number.

[0113] For example, assuming that there are two links between the first device and the second device, namely link #1 and link #2, and assuming that within a first time length, the number of non-positive feedbacks continuously received by the first device from the first relay terminal device of link #1 is n1, and the number of non-positive feedbacks continuously received by the first device from the first relay terminal device of link #2 is n2, then, if the result of n1+n2 is greater than or equal to the first number, the PDCP copy transmission mechanism can be activated.

[0114] In another example, the first condition may include: a sum of the number of non-positive feedbacks included in each data transmission result reaches a first number.

[0115] For example, assuming that there are two links between the first device and the second device, namely link #1 and link #2, and assuming that within a first time length, the number of non-positive feedbacks received by the first device from the first relay terminal device of link #1 is n3, and the number of non-positive feedbacks received from the first relay terminal device of link #2 is n4, then, if the result of n3+n4 is greater than or equal to the first number, the PDCP copy transmission mechanism can be activated.

[0116] According to the above technical solution, the first device can determine whether to activate the PDCP duplicate transmission mechanism based on the data transmission result from the first relay terminal device. Because a greater number of non-positive feedback in the data transmission result indicates poorer channel quality and a lower probability of successful data transmission, the first device can activate the PDCP duplicate transmission mechanism if there is a large number of non-positive feedback to increase the probability of successful transmission of the first data from the first device to the second device.

[0117] In some embodiments, the first number may be configured by a network, for example.

[0118] In some embodiments, the first quantity is related to one or more of the following information: PER (which may be included in the QoS parameters); the first QoS parameter; the first measurement value; the number of relay terminal devices; the way in which the first device obtains transmission resources; and the RLC mode.

[0119] In some embodiments, when the first data is a DRB (denoted as the first DRB), the PER may be the minimum, maximum, or average PER of the QoS flows associated with the first DRB. The first QoS parameter may include, for example, the priority of the first data and / or the PDB. The first measurement value may include, for example, the congestion level of the resource pool and / or the signal quality.

[0120] In one example, the first number may be related to the PER. It is understood that a smaller PER in the QoS parameter indicates a higher requirement for data transmission reliability. Therefore, when the PER is small, the first number may be relatively small to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data being sent from the first device to the second device.

[0121] In another example, the first number may be related to the priority of the first data. It is understood that a higher priority for the first data indicates a higher requirement for transmission reliability of the first data. Therefore, when the priority of the first data is high, the first number may be relatively small to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data transmitted by the first device to the second device.

[0122] The relationship between the first quantity and other relevant information can be inferred based on the description of information a) to e) in the aforementioned embodiment, and will not be repeated here.

[0123] In some embodiments, the first duration may be configured by the network, for example.

[0124] In some embodiments, the first duration is related to one or more of the following information: PER (which may be included in the QoS parameters, for example, it may be the minimum, maximum or average value of the PER in the QoS flow associated with the first DRB); the first QoS parameter (for example, it may include the priority and / or PDB of the first data); the first measurement value (for example, it may include the congestion level of the resource pool and / or the signal quality); the number of relay terminal devices; the way in which the first device obtains transmission resources; and, the RLC mode.

[0125] In one example, the first duration may be related to the PER. It is understood that a smaller PER in the QoS parameters indicates a higher requirement for data transmission reliability. Therefore, when the PER is smaller, the first duration may be relatively longer to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data being sent from the first device to the second device.

[0126] In another example, the first duration may be related to the priority of the first data. It is understood that a higher priority for the first data indicates a higher requirement for transmission reliability of the first data. Therefore, when the priority of the first data is higher, the first duration may be relatively longer to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data transmitted by the first device to the second device.

[0127] The relationship between the first duration and other relevant information can be inferred based on the description of information a) to e) in the aforementioned embodiment, and will not be repeated here.

[0128] In some embodiments, the first duration may be, for example, a timer value (a timing duration of a timer), and the timer may start timing when the first device receives a non-positive feedback.

[0129] According to the above technical solution, the first device can determine whether to activate the PDCP copy transmission mechanism based on various factors such as comprehensive data transmission results to meet corresponding data transmission requirements.

[0130] In some embodiments, the above-mentioned data transmission result may be, for example, a HARQ feedback result or an RLC feedback result.

[0131] In some embodiments, the first information may include a data transmission result from the second device, where the data transmission result is used to determine the amount of lost data in the data sent from the first device to the second device. That is, the second device may send the first information including the data transmission result to the first device, so that the first device can determine the amount of lost data in the data sent from the first device to the second device based on the data transmission result from the second device, and further determine whether to activate the PDCP duplicate transmission mechanism based on the amount of lost data.

[0132] Exemplarily, the data transmission result from the second device may be, for example, a PDCP status report (Status Report, SR).

[0133] In some embodiments, if the amount of lost data is greater than or equal to a second threshold, the PDCP duplicate transmission mechanism is activated.

[0134] It can be understood that the greater the amount of lost data, the worse the channel quality and the lower the probability of successful data transmission. Therefore, when the amount of lost data is large (for example, when the amount of lost data is greater than or equal to the second threshold), the first device can activate the PDCP copy transmission mechanism to increase the probability of the first device successfully transmitting the first data to the second device.

[0135] In some embodiments, the second threshold may be configurable, for example, by the network.

[0136] In some embodiments, the second threshold is related to one or more of the following information: PER (which may be included in the QoS parameters); the first QoS parameter; the first measurement value; the number of relay terminal devices; the way in which the first device obtains transmission resources; and the RLC mode.

[0137] In some embodiments, when the first data is a DRB (denoted as the first DRB), the PER may be the minimum, maximum, or average PER of the QoS flows associated with the first DRB. The first QoS parameter may include, for example, the priority of the first data and / or the PDB. The first measurement value may include, for example, the congestion level of the resource pool and / or the signal quality.

[0138] In one example, the second threshold may be related to the PER. It is understood that a smaller PER in the QoS parameters indicates a higher requirement for data transmission reliability. Therefore, when the PER is smaller, the second threshold may be relatively small to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data being sent from the first device to the second device.

[0139] In another example, the second threshold may be related to the priority of the first data. It is understood that a higher priority for the first data indicates a higher requirement for transmission reliability of the first data. Therefore, when the priority of the first data is higher, the second threshold may be relatively small to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data transmitted by the first device to the second device.

[0140] The relationship between the second threshold and other relevant information can be inferred based on the description of information a) to e) in the above embodiments, and will not be repeated here.

[0141] According to the above technical solution, the first device can determine whether to activate the PDCP copy transmission mechanism based on multiple factors such as the amount of lost data, so as to meet the corresponding data transmission requirements.

[0142] In some embodiments, the first information may include: the amount of data contained in one or more layers of the PDCP layer, the RLC layer, and the MAC layer of the first device (or the amount of data contained).

[0143] In one example, the first information may include: the amount of data contained in one of the PDCP layer, RLC layer, and MAC layer of the first device. For example, the first information may include the amount of data contained in the PDCP layer of the first device. The amount of data contained in the PDCP layer can also be understood as the amount of data contained in the buffer of the PDCP layer.

[0144] In another example, the first information may include: the amount of data (total amount of data) contained in multiple layers of the PDCP layer, RLC layer, and MAC layer of the first device. For example, the first information may include the amount of data (total amount of data) contained in the PDCP layer, RLC layer, and MAC layer of the first device. The amount of data contained in the RLC layer can also be understood as the amount of data contained in the RLC layer buffer; the amount of data contained in the MAC layer can also be understood as the amount of data contained in the MAC layer buffer.

[0145] For example, assuming that the amount of data contained in the PDCP layer of the first device is m1, the amount of data contained in the RLC layer is m2, and the amount of data contained in the MAC layer is m3, then the amount of data contained in the PDCP layer, RLC layer and MAC layer of the first device (total data amount) is m1+m2+m3.

[0146] In some embodiments, when the data amount is less than or equal to a third threshold, the PDCP duplicate transmission mechanism is activated.

[0147] It can be understood that since the larger the amount of data, the more data the first device has to send, there may be a situation where the transmission resources are insufficient. Therefore, when the amount of data is large, the PDCP copy transmission mechanism should not be activated. When the amount of data is small (for example, when the amount of data is less than or equal to the third threshold), the first device can activate the PDCP copy transmission mechanism to improve the reliability of the first device sending the first data to the second device.

[0148] In some embodiments, the third threshold may be configured, for example, by the network.

[0149] In some embodiments, the third threshold is related to one or more of the following information: PER (which may be included in the QoS parameters); the first QoS parameter; the first measurement value; the number of relay terminal devices; the way in which the first device obtains transmission resources; and the RLC mode.

[0150] In some embodiments, when the first data is a DRB (denoted as the first DRB), the PER may be the minimum, maximum, or average PER of the QoS flows associated with the first DRB. The first QoS parameter may include, for example, the priority of the first data and / or the PDB. The first measurement value may include, for example, the congestion level of the resource pool and / or the signal quality.

[0151] For example, the third threshold may be related to the PER. It is understood that a smaller PER in the QoS parameters indicates a higher requirement for data transmission reliability. Therefore, when the PER is smaller, the third threshold may be relatively larger to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data being sent from the first device to the second device.

[0152] In another example, the third threshold may be related to the priority of the first data. It is understood that a higher priority for the first data indicates a higher requirement for transmission reliability of the first data. Therefore, when the priority of the first data is higher, the third threshold may be relatively large to more easily meet the conditions for activating the PDCP duplicate transmission mechanism, thereby improving the reliability of the first data transmitted by the first device to the second device.

[0153] The relationship between the third threshold and other relevant information can be inferred based on the description of information a) to e) in the above embodiments, and will not be repeated here.

[0154] According to the above technical solution, the first device can determine whether to activate the PDCP copy transmission mechanism based on various factors such as the amount of data to be sent, so as to meet the corresponding data transmission requirements.

[0155] In some embodiments, if multiple links exist between the first device and the second device, then when the PDCP duplicate transmission mechanism is activated, at least two of the multiple links may be used for the first device to send the first data to the second device, or in other words, the at least two links may be activated. The at least two links may be determined by the first device, for example.

[0156] For example, assuming there are three links between a first device and a second device, namely link #1, link #2, and link #3, then when the PDCP duplicate transmission mechanism is activated, the first device may select at least two of the links to transmit the first data. For example, the first device may select link #1 and link #3 for transmitting the first data. That is, the first device may simultaneously transmit the first data to the second device via link #1 and link #3, thereby improving the reliability of the first data transmission from the first device to the second device.

[0157] In some embodiments, if there is a link between the first device and the second device, the first device may send multiple copies (such as two copies) of the first data to the second device on the link based on carrier aggregation (CA) technology to improve the reliability of the first device sending the first data to the second device.

[0158] In some embodiments, the first information may be control signaling from the second device, such as a PDCP control protocol data unit (PDU).

[0159] That is, the second device may send control signaling (first information) to the first device, and accordingly, the first device may receive the control signaling and thereby determine whether to activate the PDCP duplicate transmission mechanism based on the control signaling.

[0160] In some embodiments, the control signaling may be used to indicate whether to activate the PDCP duplicate transmission mechanism.

[0161] As an implementation, the control signaling may include an activation / deactivation indication (DA) to indicate whether to activate the PDCP duplicate transport mechanism. In one example, when the activation / deactivation indication is set to 0, the PDCP duplicate transport mechanism is deactivated; and when the activation / deactivation indication is set to 1, the PDCP duplicate transport mechanism is activated. In another example, when the activation / deactivation indication is set to 1, the PDCP duplicate transport mechanism is deactivated; and when the activation / deactivation indication is set to 0, the PDCP duplicate transport mechanism is activated.

[0162] In some embodiments, when the DA indicates activation of the PDCP copy transmission mechanism, if there are multiple links between the first device and the second device, then the multiple links can all be activated for the first device to send the first data to the second device, that is, the first device can send the first data to the second device simultaneously on the multiple links to improve the reliability of the first device sending the first data to the second device.

[0163] In some embodiments, when the DA indicates activation of the PDCP copy transmission mechanism, if there is a link between the first device and the second device, the first device may send multiple copies (such as two copies) of the first data to the second device on the link based on CA technology to improve the reliability of the first device sending the first data to the second device.

[0164] In some embodiments, when there are multiple links between the first device and the second device, the control signaling can be used to indicate: activating the PDCP copy transmission mechanism, and at least two links among the multiple links, where the at least two links are used for the first device to send the first data to the second device.

[0165] That is, based on the control signaling, the first device can know whether to activate the PDCP duplicate transmission mechanism, and can know at least two links used to send the first data to the second device.

[0166] As an implementation method, the control signaling may include an activation / deactivation indication (DA) and the configuration corresponding to each link between the first device and the second device. The DA can be used to indicate whether the PDCP replication transmission mechanism is activated. In the case where the DA indicates the activation of the PDCP replication transmission mechanism, the configuration corresponding to each link can be used to indicate the activated link. For example, in the case where the DA indicates the activation of the PDCP replication transmission mechanism, if the configuration corresponding to two or more links is set to activated (such as set to 1), the two or more links can be used for the first device to send the first data to the second device.

[0167] As another implementation, the control signaling may include configurations corresponding to each link between the first device and the second device. The configuration corresponding to each link may be used to indicate whether the link is activated for the first device to send the first data to the second device. For example, if the configuration corresponding to two or more links is set to activated (e.g., set to 1), it indicates that the PDCP duplicate transmission mechanism needs to be activated, and the two or more links need to be activated, so that the first device can send the first data to the second device over the two or more links.

[0168] In some embodiments, the first information is control signaling from at least one first relay terminal device, which is located on at least one link between the first device and the second device, and is directly connected to the first device.

[0169] For example, assuming that there are two links between the first device and the second device, namely link #1 and link #2, then the at least one first relay terminal device can be a relay terminal device directly connected to the first device on link #1 or link #2, or the at least one first relay terminal device can include: a relay terminal device directly connected to the first device on link #1, and a relay terminal device directly connected to the first device on link #2.

[0170] That is, the first relay terminal device on one or more links between the first device and the second device can send control signaling (first information) to the first device. Accordingly, the first device can receive the control signaling and determine whether to activate the PDCP copy transmission mechanism based on the control signaling.

[0171] Exemplarily, the control signaling from the at least one first relay terminal device may be, for example: MAC CE, RLC control PDU or SRAP control PDU.

[0172] In some embodiments, the first data includes one or more DRBs, and the first information may be used to indicate: activation or deactivation of the PDCP duplicate transmission mechanism; and the one or more DRBs.

[0173] That is, based on the control signaling, the first device can know whether to activate the PDCP duplicate transmission mechanism, and can know one or more DRBs that need to be transmitted based on the PDCP duplicate transmission mechanism.

[0174] In some embodiments, when the control signaling is a MAC CE, the MAC CE may, for example, include configurations corresponding to multiple DRBs, wherein the configuration corresponding to each DRB may be used to indicate whether the DRB needs to be transmitted based on the PDCP replication transmission mechanism. For example, if the configuration corresponding to one or more DRBs among the multiple DRBs is set to activated (such as set to 1), it means that the first device should activate the PDCP replication transmission mechanism to send the one or more DRBs set to activated to the second device. In other words, if the configuration corresponding to one or more DRBs among the multiple DRBs is set to activated (such as set to 1), the first device needs to send the one or more DRBs set to activated to the second device based on the PDCP replication transmission mechanism.

[0175] In some embodiments, when the control signaling is an RLC control PDU or an SRAP control PDU, the RLC control PDU or the SRAP control PDU may, for example, include an activation / deactivation indication (denoted as DA) and configurations corresponding to multiple DRBs. DA can be used to indicate whether the PDCP duplicate transmission mechanism is activated. In one example, when the activation / deactivation indication is set to 0, it indicates deactivation of the PDCP duplicate transmission mechanism; when the activation / deactivation indication is set to 1, it indicates activation of the PDCP duplicate transmission mechanism. In another example, when the activation / deactivation indication is set to 1, it indicates deactivation of the PDCP duplicate transmission mechanism; when the activation / deactivation indication is set to 0, it indicates activation of the PDCP duplicate transmission mechanism.

[0176] In the case where the DA indicates the activation of the PDCP copy transmission mechanism, the configurations corresponding to multiple DRBs can be used to indicate one or more DRBs that need to be transmitted based on the PDCP copy transmission mechanism. For example, in the case where the DA indicates the activation of the PDCP copy transmission mechanism, if the configuration corresponding to one or more DRBs among the multiple DRBs is set to activated (such as set to 1), it means that the first device should activate the PDCP copy transmission mechanism to send the one or more DRBs set to activated to the second device. In other words, in the case where the DA indicates the activation of the PDCP copy transmission mechanism, if the configuration corresponding to one or more DRBs among the multiple DRBs is set to activated (such as set to 1), the first device needs to send the one or more DRBs set to activated to the second device based on the PDCP copy transmission mechanism.

[0177] In some embodiments, the first information may be determined based on second information from the second device, or in other words, the first information may be triggered based on the second information from the second device. The second information may be used to indicate an identifier (ID) of the first device; activation or deactivation of the PDCP duplicate transmission mechanism; and one or more DRBs to be transmitted based on the PDCP duplicate transmission mechanism.

[0178] That is, the second device may send the second information to at least one first relay terminal device, and accordingly, the at least one first relay terminal device may receive the second information from the second device. After receiving the second information, the at least one first relay terminal device may determine that the device for which the PDCP duplicate transmission mechanism needs to be activated is the first device based on the identifier of the first device carried in the second information, and may determine / set the first information to be sent to the first device according to the content indicated by the second information.

[0179] For example, if the second information includes configurations corresponding to multiple DRBs, the first relay terminal device may carry the configurations corresponding to the multiple DRBs in the first information and send it to the first device; for another example, if the second information includes an activation / deactivation indication and configurations corresponding to multiple DRBs, the first relay terminal device may carry the activation / deactivation indication and the configurations corresponding to the multiple DRBs in the first information and send it to the first device.

[0180] In some embodiments, the first device is a terminal device, and the second device is a network device or a terminal device.

[0181] In one example, the first device is a terminal device (such as a remote terminal device) and the second device is a network device. In this case, the method of the embodiment of the present application can be applied to the U2N relay scenario. In another example, the first device and the second device are both terminal devices (such as remote terminal devices). In this case, the method of the embodiment of the present application can be applied to the U2U relay scenario.

[0182] The above introduces the replication transmission method provided in the embodiment of the present application. To facilitate understanding of the embodiment of the present application, the following takes the first device as a remote terminal device (hereinafter referred to as the remote terminal) and the second device as a network device (hereinafter referred to as the network) as an example to introduce possible implementation schemes of the replication transmission method applicable to the embodiment of the present application.

[0183] For example, possible implementations include:

[0184] Solution 1: The remote terminal activates the PDCP duplicate transmission mechanism according to certain rules.

[0185] Solution 2: The remote terminal activates / deactivates the PDCP duplicate transmission mechanism according to the end-to-end (E2E) control signaling from the network.

[0186] Solution 3: The remote terminal activates / deactivates the PDCP duplicate transmission mechanism based on per-hop control signaling from the relay terminal (an example of the first relay terminal device mentioned above).

[0187] The three solutions mentioned above are introduced below.

[0188] Option 1

[0189] In solution 1, when the network configures the PDCP duplicate transmission mechanism of the remote terminal, the remote terminal can activate the PDCP duplicate transmission mechanism according to certain rules.

[0190] In a first implementation manner, the remote terminal may determine whether to activate the PDCP duplicate transmission mechanism according to an instruction from an upper layer (eg, Non-Access Stratum (NAS); or Prose).

[0191] In one example, the upper layer may explicitly indicate whether to activate the PDCP duplicate transmission mechanism. For example, if the upper layer indicates to activate the PDCP duplicate transmission mechanism, the terminal may activate the PDCP duplicate transmission mechanism.

[0192] In another example, the upper layer may implicitly indicate whether to activate the PDCP duplicate transmission mechanism. For example, the upper layer may indicate that the terminal may activate the PDCP duplicate transmission mechanism when the data to be transmitted (such as PDU data or QoS flow data) is data of a specific service type.

[0193] In the second implementation, the remote terminal may determine whether to activate the PDCP duplicate transmission mechanism based on a QoS parameter (such as PER). The following description will be given using the QoS parameter PER as an example.

[0194] In one example, if PER < threshold #1, the PDCP duplicate transmission mechanism is activated. Threshold #1 may be configured by the network, and the PER value may be the minimum, maximum, or average of the PERs in the QoS flows associated with the DRB to be sent.

[0195] In another example, if PER < Threshold #2, the PDCP duplicate transmission mechanism is activated. Threshold #2 is associated with data priority (or other QoS parameters, such as PDB). Different priorities correspond to different Threshold #2 values. Threshold #2 is network-configurable, and the PER value can be the minimum, maximum, or average of the PERs for the QoS flows associated with the DRB to be transmitted.

[0196] As another example, if PER < Threshold #3, the PDCP duplicate transmission mechanism is activated. Threshold #3 is associated with the resource pool congestion level (or other measurement, such as signal quality). Different resource pool congestion levels correspond to different Threshold #3 values. Threshold #3 is network-configurable, and the PER value can be the minimum, maximum, or average of the PERs for the QoS flows associated with the DRB to be transmitted.

[0197] It should be noted that the threshold used for comparison with the PER may also be related to one or more other parameters. For example, if the PER is less than threshold #4, the PDCP duplicate transmission mechanism is activated. Threshold #4 may be related to data priority, resource pool congestion, and / or other variables (such as the number of relay hops, resource acquisition method, RLC mode, etc.).

[0198] In a third implementation manner, the remote terminal may determine whether to activate the PDCP duplicate transmission mechanism according to the data transmission result.

[0199] In some embodiments, the data transmission result may be, for example: a single-hop data transmission result (between a remote terminal and a relay terminal), such as HARQ feedback or RLC feedback from the relay terminal.

[0200] In one example, if the remote terminal receives N consecutive non-acknowledgement feedback (NACK / or no ACK), the PDCP duplicate transmission mechanism is activated. The remote terminal can determine whether N consecutive non-acknowledgement feedback has been received by defining a timer and a counter. For example, the remote terminal can start a timer when receiving non-acknowledgement feedback and stop the timer when receiving affirmative feedback. After the timer is started, the counter starts counting from 0. If the timer times out / the counter is stopped, the counter is reset to zero. If the counter value reaches N, it indicates that the remote terminal has received N consecutive non-acknowledgement feedback, and the remote terminal can activate the PDCP duplicate transmission mechanism.

[0201] In another example, if the remote terminal receives M non-acknowledged feedbacks (not necessarily consecutive) within a certain period of time, the PDCP duplicate transmission mechanism is activated. The remote terminal can determine whether M non-acknowledged feedbacks have been received within a certain period of time by defining a timer and a counter. For example, the remote terminal can start a timer upon receiving non-acknowledged feedback. After the timer is started, the counter starts counting from 0 and is reset to zero when the timer times out. If the counter value reaches M, it indicates that the remote terminal has received M non-acknowledged feedbacks, and the remote terminal can activate the PDCP duplicate transmission mechanism.

[0202] In some embodiments, the above-mentioned timer value (timer duration), as well as the values ​​of M and N can be configured by the network, and the network-configured values ​​(timer value, M and N) can be related to one or more of the following information: PER, data priority, PDB, resource pool congestion level, signal quality, number of relay hops, resource acquisition method, and RLC mode.

[0203] It should be noted that, for the above counting, a single path counting may be considered, or a mixed counting of multiple paths may be considered.

[0204] In some embodiments, individual path counts may be considered. For example, if any path between the remote terminal and the network meets a condition (e.g., N consecutive non-acknowledged feedback received on that path; or M non-acknowledged feedback received within a certain period of time), the PDCP duplicate transmission mechanism is activated. For another example, if a specific path between the remote terminal and the network meets the condition, the PDCP duplicate transmission mechanism is activated. The specific path may be configured by the network or be the primary path.

[0205] In some embodiments, multiple path mixed counts may be considered. In one example, if the sum of the number of multiple paths reaches a corresponding number of times, the PDCP duplicate transmission mechanism is activated. For example, assuming that the multiple paths include path #1 and path #2, then if the sum of the number of consecutive non-affirmative feedbacks received on path #1 and the number of consecutive non-affirmative feedbacks received on path #2 reaches a corresponding number of times, the PDCP duplicate transmission mechanism may be activated. In another example, if both paths reach a certain number of times respectively, the PDCP duplicate transmission mechanism is activated. For example, assuming that the multiple paths include path #1 and path #2, then if the number of consecutive non-affirmative feedbacks received on path #1 and the number of consecutive non-affirmative feedbacks received on path #2 both reach a certain number of times, the PDCP duplicate transmission mechanism may be activated.

[0206] In some embodiments, the data transmission result may be, for example, an E2E data transmission result (between the remote terminal and the network). That is, the remote terminal may determine whether to activate the PDCP duplicate transmission mechanism based on the data transmission result between the remote terminal and the network. The data transmission result may be, for example, a PDCP SR from the network.

[0207] As an example, if the remote terminal detects, based on a PDCP SR from the network, that the number of lost data packets exceeds threshold #5, the PDCP duplicate transmission mechanism is activated. Threshold #5 may be configured by the network. In some embodiments, threshold #5 may be related to one or more of the following information: PER, data priority, PDB, resource pool congestion, signal quality, number of relay hops, resource acquisition method, and RLC mode.

[0208] In a fourth implementation, the remote terminal may determine whether to activate the PDCP duplicate transmission mechanism based on the amount of data in the buffer. For example, the amount of data in the buffer may include at least one of the following: the amount of data in the PDCP layer buffer; the amount of data in the RLC layer buffer; and the amount of data in the MAC layer buffer.

[0209] In some embodiments, if the amount of data in the buffer is less than threshold #6, the PDCP duplicate transmission mechanism is activated. Threshold #6 may be configured by the network, for example. In some embodiments, threshold #6 may be related to one or more of the following information: PER, data priority, PDB, resource pool congestion, signal quality, number of relay hops, resource acquisition method, and RLC mode.

[0210] Option 2

[0211] In solution 2, the remote terminal can activate / deactivate the PDCP duplicate transmission mechanism based on E2E control signaling from the network.

[0212] In some embodiments, the control signaling is a PDCP control PDU. Exemplarily, the PDCP control PDU may include the following parameters 1) to 4):

[0213] 1) D / C bit: used to indicate whether it is a data or control PDU.

[0214] 2) PDU type (3 bits). For example, 100 indicates a duplicate transmission (PDCP duplicate transmission mechanism) activation / deactivation control PDU. The PDU type is shown in Table 1.

[0215] Table 1

[0216] 3) Activation / deactivation indication (represented by DA), such as 0 for deactivation and 1 for activation.

[0217] 4) R i : Indicates the path number to be activated.

[0218] In some embodiments, R i The activation / deactivation (inactivation) indication can be used together. For example, the activation / deactivation indication can be used to indicate whether to activate the copy transmission. i Can be used to indicate which path is active.

[0219] In some embodiments, R i Can be used alone to indicate which path is active.

[0220] In some embodiments, the activation / deactivation indication can be used alone. For example, when the DA indication activates the replication transmission, all paths are activated.

[0221] Figure 6 shows an example of the format of a PDCP control PDU provided in an embodiment of the present application. In Figure 6, if the PDCP duplicate transmission mechanism needs to be activated, and path #2 (corresponding path numbered R2) and path #1 (corresponding path numbered R1) need to be activated, the D / C indication can be set to a control PDU, the PDU type can be set to 100, the DA (activation / deactivation indication) can be set to 1, and the configurations corresponding to R2 and R1 can be set to 1. After receiving this control PDU, the remote terminal can activate path #2 and path #1 for duplicate transmission.

[0222] Option 3

[0223] In solution three, the remote terminal can activate / deactivate the PDCP duplicate transmission mechanism based on the single-hop control signaling from the relay terminal.

[0224] In some embodiments, single-hop control signaling from a relay terminal may be triggered by network control. As shown in FIG7 , in S701, the network may send control signaling (e.g., denoted as first control signaling) to the relay terminal. The first control signaling is a PDCP duplicate transmission activation / deactivation instruction for the remote terminal. After receiving the first control signaling, the relay terminal may set control signaling (e.g., denoted as second control signaling) on ​​the PC5 interface between the relay terminal and the remote terminal in accordance with the first control signaling. In S702, the relay terminal may send the second control signaling to the remote terminal.

[0225] In a first implementation manner, the control signaling may be MAC CE.

[0226] In some embodiments, the network can autonomously select which relay terminal or terminals on which paths to send the MAC CE (first control signaling). In one example, the network can send the MAC CE to a relay terminal on the primary path, i.e., the network can send the MAC CE via the primary path. In another example, the network can send the MAC CE to a relay terminal on the secondary path, i.e., the network can send the MAC CE via the secondary path. In yet another example, the network can send the MAC CE to relay terminals on both the primary and secondary paths, i.e., the network can send the MAC CE via both the primary and secondary paths. For example, in the scenario shown in Figure 4, the network (gNB) can choose to send the MAC CE to one of relay terminals #1 and #2, or the network can send the MAC CE to both relay terminals #1 and #2 simultaneously.

[0227] In some embodiments, the information to be included in the MAC CE from the network to the relay terminal includes: whether DRB needs to activate duplicate transmission; and the ID of the remote terminal for which duplicate transmission needs to be activated (such as L2ID or local UE ID).

[0228] Whether DRB replication transmission needs to be activated can be indicated, for example, via a bitmap. For example, in the format of the MAC CE (an example of first control signaling) shown in FIG8 , D0 to D7 each correspond to a DRB. If one or more values ​​in D0 to D7 are set to 1, the corresponding DRB is activated. As shown in FIG8 , the MAC CE may also include a UE ID (i.e., the ID of the remote terminal for which replication transmission needs to be activated).

[0229] After receiving the MAC CE from the network, the relay terminal can configure the MAC CE (second control signaling) on ​​the PC5 interface between the relay terminal and the remote terminal according to the MAC CE. The MAC CE from the relay terminal to the remote terminal must include the following information: the index or ID (which can be in bitmap format) of the DRB for which duplicate transmission is to be activated. The possible format of the MAC CE from the relay terminal to the remote terminal can, for example, reuse the existing PDCP duplication activation / deactivation MAC CE format.

[0230] After receiving the MAC CE from the relay terminal, the remote terminal can activate / deactivate the corresponding DRB replication transmission according to the indication of whether to activate replication transmission for each DRB in the MAC CE.

[0231] In a second implementation manner, the control signaling may be an RLC control PDU or an SRAP control PDU.

[0232] In some embodiments, the network can independently select the relay terminal or terminals on which the RLC control PDU or SRAP control PDU (first control signaling) is to be sent. In one example, the network can send the RLC control PDU or SRAP control PDU to the relay terminal on the primary path, that is, the network can send the RLC control PDU or SRAP control PDU via the primary path; in another example, the network can send the RLC control PDU or SRAP control PDU to the relay terminal on the secondary path, that is, the network can send the RLC control PDU or SRAP control PDU via the secondary path; in yet another example, the network can send the RLC control PDU or SRAP control PDU to the relay terminals on both the primary and secondary paths, that is, the network can send the RLC control PDU or SRAP control PDU via both the primary and secondary paths. For example, in the scenario shown in FIG4 , the network (gNB) may choose to send the RLC control PDU or SRAP control PDU to one of relay terminals #1 and #2, or the network may send the RLC control PDU or SRAP control PDU to both relay terminal #1 and #2 at the same time.

[0233] In some embodiments, the information that needs to be included in the RLC control PDU or SRAP control PDU from the network to the relay terminal includes: the ID of the remote terminal for which duplicate transmission needs to be activated (L2ID or local UE ID); the DRB index or ID for which duplicate transmission needs to be activated; and an activation / deactivation indication.

[0234] Figure 9 shows a possible format of an RLC control PDU or SRAP control PDU sent by the network. As shown in Figure 9, the RLC control PDU or SRAP control PDU may include the following parameters:

[0235] D / C: used to indicate whether it is a data or control PDU; activation / deactivation indication (represented by DA); D0 to D7 (DRB index or ID); UE ID (ID of the remote terminal that needs to activate duplicate transmission). R in Figure 9 represents a padding bit.

[0236] After receiving the RLC control PDU or SRAP control PDU from the network, the relay terminal may set the RLC control PDU or SRAP control PDU (second control signaling) on ​​the PC5 interface between the relay terminal and the remote terminal according to the RLC control PDU or SRAP control PDU.

[0237] Figure 10 shows a possible format of an RLC control PDU or SRAP control PDU sent by a relay terminal. As shown in Figure 10, the RLC control PDU or SRAP control PDU may include the following parameters:

[0238] D / C: used to indicate whether it is a data or control PDU; activation / deactivation indication (represented by DA); D0 to D7 (DRB index or ID). R in Figure 10 represents a padding bit.

[0239] After receiving the RLC control PDU or SRAP control PDU from the relay terminal, the remote terminal can activate / deactivate the corresponding DRB replication transmission according to the indication of whether to activate replication transmission for each DRB in the RLC control PDU or SRAP control PDU.

[0240] According to the method of the embodiment of the present application, in a scenario where each path between a remote terminal and a network is a non-direct connection path, activation of a dynamic PDCP duplicate transmission mechanism is supported.

[0241] In some embodiments, the embodiments of the present application may also be applied to U2U relay scenarios, that is, in scenarios where each path between a remote terminal and another remote terminal is an indirect path, the activation of a dynamic PDCP duplicate transmission mechanism is supported.

[0242] In some embodiments, when considering which path to use for a split-bearer in a non-duplicate transmission scenario, a dynamic decision can be made based on QoS requirements (e.g., PDB, PER, etc.) and the link conditions of each path (e.g., number of relay hops, congestion level, signal quality, etc.). For example, if a low PDB is required for the data to be transmitted, a path with fewer relay hops can be selected; if a low PER is required (i.e., high transmission reliability is required), a path with better signal quality can be selected.

[0243] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0244] It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply a precedence in the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data, where "downlink" is used to indicate the first direction of transmission of signals or data from a site to a user equipment in a cell, "uplink" is used to indicate the second direction of transmission of signals or data from a user equipment in a cell to a site, and "sidelink" is used to indicate the third direction of transmission of signals or data from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist. Specifically, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0245] Based on the aforementioned embodiments, the embodiments of the present application provide corresponding copy transmission devices.

[0246] Figure 11 is a schematic diagram of the first structure of a replication transmission apparatus provided in an embodiment of the present application, applied to a first device. One or more links exist between replication transmission apparatus 1100 and a second device, with one or more relay terminal devices on each link. As shown in Figure 11 , replication transmission apparatus 1100 (hereinafter referred to as apparatus 1100 ) includes:

[0247] The acquiring unit 1101 is configured to acquire first information, where the first information is used to determine whether to activate a Packet Data Convergence Protocol (PDCP) duplicate transmission mechanism of the apparatus 1100 , where the PDCP duplicate transmission mechanism is used by the apparatus 1100 to send first data to a second device.

[0248] In some embodiments, the first information comes from an upper layer of the device 1100, and the first information is used to indicate: whether to activate the PDCP copy transmission mechanism; or, when the first data is a specific service type, activate the PDCP copy transmission mechanism.

[0249] In some embodiments, the first information includes a packet error rate PER, and when the PER is less than or equal to a first threshold, the PDCP duplicate transmission mechanism is activated.

[0250] In some embodiments, the first threshold is related to one or more of the following information: a first quality of service QoS parameter; a first measurement value; the number of relay terminal devices; a manner in which the apparatus 1100 obtains transmission resources; and a radio link control RLC mode.

[0251] In some embodiments, there are multiple links between the apparatus 1100 and the second device, and the first information includes: the data transmission result received by the apparatus 1100 on the first link among the multiple links within a first time period; the data transmission result comes from the first relay terminal device on the first link, and the first relay terminal device is directly connected to the apparatus 1100.

[0252] In some embodiments, there is a link between apparatus 1100 and a second device, and the first information includes: the data transmission result received by apparatus 1100 on the link within a first time period; the data transmission result comes from a first relay terminal device on the link, and the first relay terminal device is directly connected to apparatus 1100.

[0253] In some embodiments, the PDCP duplicate transmission mechanism is activated when a first condition is met, the first condition including: the data transmission result includes a first number of consecutive non-positive feedbacks; or the data transmission result includes a first number of non-positive feedbacks.

[0254] In some embodiments, there are multiple links between the device 1100 and the second device, and the first information includes: data transmission results received by the device 1100 on at least two of the multiple links within a first time period; the data transmission results received by the device 1100 on each of the at least two links come from the first relay terminal device on the link, and the first relay terminal device is directly connected to the device 1100.

[0255] In some embodiments, the PDCP copy transmission mechanism is activated when the second condition is met, and the second condition includes: each data transmission result includes a first number of consecutive non-affirmative feedbacks; or, each data transmission result includes a first number of non-affirmative feedbacks; or, the sum of the number of consecutive non-affirmative feedbacks included in each data transmission result reaches a first number; or, the sum of the number of non-affirmative feedbacks included in each data transmission result reaches a first number.

[0256] In some embodiments, the first quantity is related to one or more of the following information: PER; a first QoS parameter; a first measurement value; the number of relay terminal devices; a manner in which the apparatus 1100 obtains transmission resources; and an RLC mode.

[0257] In some embodiments, the first duration is related to one or more of the following information: PER; a first QoS parameter; a first measurement value; the number of relay terminal devices; a manner in which the apparatus 1100 obtains transmission resources; and an RLC mode.

[0258] In some embodiments, the data transmission result is a hybrid automatic repeat request feedback result or an RLC feedback result.

[0259] In some embodiments, the first information includes: a data transmission result from the second device, where the data transmission result is used to determine the amount of lost data in the data sent by the apparatus 1100 to the second device.

[0260] In some embodiments, if the amount of lost data is greater than or equal to a second threshold, the PDCP duplicate transmission mechanism is activated.

[0261] In some embodiments, the second threshold is related to one or more of the following information: PER; the first QoS parameter; the first measurement value; the number of relay terminal devices; the way in which the apparatus 1100 obtains transmission resources; and the RLC mode.

[0262] In some embodiments, the data transmission result is a PDCP status report.

[0263] In some embodiments, the first information includes: the amount of data contained in one or more layers of the PDCP layer, the RLC layer, and the media access control MAC layer of the apparatus 1100 .

[0264] In some embodiments, when the data amount is less than or equal to a third threshold, the PDCP duplicate transmission mechanism is activated.

[0265] In some embodiments, the third threshold is related to one or more of the following information: PER; the first QoS parameter; the first measurement value; the number of relay terminal devices; the way in which the apparatus 1100 obtains transmission resources; and the RLC mode.

[0266] In some embodiments, the first QoS parameter includes: priority of the first data; and / or packet delay budget; the first measurement value includes: resource pool congestion level; and / or signal quality.

[0267] In some embodiments, the first data is a first data radio bearer DRB, and the PER is the minimum, maximum or average value of the PER in the QoS flow associated with the first DRB.

[0268] In some embodiments, there are multiple links between apparatus 1100 and the second device. When the PDCP copy transmission mechanism is activated, at least two of the multiple links are used for apparatus 1100 to send first data to the second device, and the at least two links are determined by apparatus 1100.

[0269] In some embodiments, the first information is used to indicate whether the PDCP copy transmission mechanism is activated; or, in the case where there are multiple links between the device 1100 and the second device, the first information is used to indicate: activating the PDCP copy transmission mechanism, and at least two links among the multiple links, at least two links are used for the device 1100 to send the first data to the second device.

[0270] In some embodiments, the first information is a PDCP control protocol data unit from the second device.

[0271] In some embodiments, the first data includes one or more DRBs; the first information is used to indicate: activation or deactivation of the PDCP duplicate transmission mechanism; and the one or more DRBs.

[0272] In some embodiments, the first information is determined based on second information from the second device, the second information being used to indicate: an identification of the apparatus 1100; activation or deactivation of the PDCP duplicate transmission mechanism; and the one or more DRBs.

[0273] In some embodiments, the first information is a MAC control unit, an RLC control protocol data unit, or a sidelink relay adaptation protocol SRAP control protocol data unit from at least one first relay terminal device; at least one first relay terminal device is located on at least one link between the device 1100 and the second device, and at least one first relay terminal device is directly connected to the device 1100.

[0274] In some embodiments, the apparatus 1100 is a terminal device, and the second device is a network device or a terminal device.

[0275] Figure 12 is a second schematic diagram of the structure of a replication transmission apparatus provided in an embodiment of the present application, applied to a second device. One or more links exist between the first device and replication transmission apparatus 1200, with one or more relay terminal devices on each link. As shown in Figure 12, replication transmission apparatus 1200 (hereinafter referred to as apparatus 1200) includes:

[0276] The first sending unit 1201 is configured to send first information to the first device, where the first information is used to determine whether to activate a Packet Data Convergence Protocol (PDCP) duplicate transmission mechanism of the first device, where the PDCP duplicate transmission mechanism is used by the first device to send first data to the apparatus 1200 .

[0277] In some embodiments, the first information includes: a data transmission result, where the data transmission result is used to determine the amount of lost data in the data sent by the first device to the apparatus 1200 .

[0278] In some embodiments, if the amount of lost data is greater than or equal to a second threshold, the PDCP duplicate transmission mechanism is activated.

[0279] In some embodiments, the second threshold is related to one or more of the following information: packet error rate PER; first quality of service QoS parameter; first measurement value; number of relay terminal devices; way in which the first device obtains transmission resources; and radio link control RLC mode.

[0280] In some embodiments, the first data is a first data radio bearer DRB, and the PER is the minimum, maximum or average value of the PER in the QoS flow associated with the first DRB; the first QoS parameter includes: the priority of the first data; and / or, the packet delay budget; the first measurement value includes: the congestion level of the resource pool; and / or, the signal quality.

[0281] In some embodiments, the data transmission result is a PDCP status report.

[0282] In some embodiments, the first information is used to indicate whether the PDCP copy transmission mechanism is activated; or, in the case where there are multiple links between the first device and the apparatus 1200, the first information is used to indicate: activating the PDCP copy transmission mechanism, and at least two links of the multiple links, at least two links being used for the first device to send the first data to the apparatus 1200.

[0283] In some embodiments, the first information is a PDCP control protocol data unit.

[0284] In some embodiments, the first device is a terminal device, and the apparatus 1200 is a network device or a terminal device.

[0285] Figure 13 is a third schematic diagram of the structure of a replication transmission device provided in an embodiment of the present application, applied to a first relay terminal device. Replication transmission device 1300 is located on a first link between a first device and a second device. Replication transmission device 1300 is directly connected to the first device. One or more links exist between the first device and the second device, and one or more relay terminal devices exist on each link. As shown in Figure 13, replication transmission device 1300 (hereinafter referred to as device 1300) includes:

[0286] The second sending unit 1301 is configured to send first information to the first device, where the first information is used to determine whether to activate a Packet Data Convergence Protocol PDCP duplicate transmission mechanism of the first device, where the duplicate transmission mechanism is used by the first device to send first data to the second device.

[0287] In some embodiments, the first information includes: data transmission results within a first time period.

[0288] In some embodiments, the PDCP duplicate transmission mechanism is activated when a first condition is met, the first condition including: the data transmission result includes a first number of consecutive non-positive feedbacks; or the data transmission result includes a first number of non-positive feedbacks.

[0289] In some embodiments, the first quantity is related to one or more of the following information: packet error rate PER; first quality of service QoS parameter; first measurement value; number of relay terminal devices; way in which the first device obtains transmission resources; and radio link control RLC mode.

[0290] In some embodiments, the first duration is related to one or more of the following information: PER; a first QoS parameter; a first measurement value; the number of relay terminal devices; a manner in which the first device obtains transmission resources; and an RLC mode.

[0291] In some embodiments, the first data is a first data radio bearer DRB, and the PER is the minimum, maximum or average value of the PER in the QoS flow associated with the first DRB; the first QoS parameter includes: the priority of the first data; and / or, the packet delay budget; the first measurement value includes: the congestion level of the resource pool; and / or, the signal quality.

[0292] In some embodiments, the data transmission result is a hybrid automatic repeat request feedback result or an RLC feedback result.

[0293] In some embodiments, the first data includes one or more DRBs; the first information is used to indicate: activation or deactivation of the PDCP duplicate transmission mechanism; and the one or more DRBs.

[0294] In some embodiments, the first information is determined based on second information from the second device, the second information being used to indicate: an identification of the first device; activation or deactivation of a PDCP duplicate transport mechanism; and the one or more DRBs.

[0295] In some embodiments, the first information is a MAC control element, an RLC control protocol data unit, or a Sidelink Relay Adaptation Protocol (SRAP) control protocol data unit.

[0296] In some embodiments, the first device is a terminal device, and the second device is a network device or a terminal device.

[0297] Those skilled in the art should understand that the relevant description of the above-mentioned copy and transmission device in the embodiment of the present application can be understood with reference to the relevant description of the copy and transmission method in the embodiment of the present application.

[0298] Figure 14 is a schematic structural diagram of a communication device 1400 provided in an embodiment of the present application. The communication device 1400 shown in Figure 14 includes a processor 1410, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0299] Optionally, as shown in FIG14 , the communication device 1400 may further include a memory 1420. The processor 1410 may call and execute a computer program from the memory 1420 to implement the method in the embodiment of the present application.

[0300] The memory 1420 may be a separate device independent of the processor 1410 , or may be integrated into the processor 1410 .

[0301] Optionally, as shown in FIG14 , the communication device 1400 may further include a transceiver 1430 , and the processor 1410 may control the transceiver 1430 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0302] The transceiver 1430 may include a transmitter and a receiver. The transceiver 1430 may further include an antenna, and the number of antennas may be one or more.

[0303] Optionally, the communication device 1400 may specifically be the first device of the embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0304] Optionally, the communication device 1400 may specifically be the second device of the embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the second device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0305] Optionally, the communication device 1400 may specifically be the first relay terminal device of the embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the first relay terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0306] Figure 15 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1500 shown in Figure 15 includes a processor 1510, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0307] Optionally, as shown in FIG15 , the chip 1500 may further include a memory 1520. The processor 1510 may call and execute a computer program from the memory 1520 to implement the method in the embodiment of the present application.

[0308] The memory 1520 may be a separate device independent of the processor 1510 , or may be integrated into the processor 1510 .

[0309] Optionally, the chip 1500 may further include an input interface 1530. The processor 1510 may control the input interface 1530 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0310] Optionally, the chip 1500 may further include an output interface 1540. The processor 1510 may control the output interface 1540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0311] Optionally, the chip can be applied to the first device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first device in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0312] Optionally, the chip can be applied to the second device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the second device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0313] Optionally, the chip can be applied to the first relay terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first relay terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0314] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0315] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0316] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0317] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0318] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0319] Optionally, the computer-readable storage medium can be applied to the first device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first device in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0320] Optionally, the computer-readable storage medium can be applied to the second device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0321] Optionally, the computer-readable storage medium can be applied to the first relay terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first relay terminal device in the various methods of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0322] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0323] Optionally, the computer program product can be applied to the first device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first device in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0324] Optionally, the computer program product can be applied to the second device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the second device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0325] Optionally, the computer program product can be applied to the first relay terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first relay terminal device in the various methods of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0326] The embodiment of the present application also provides a computer program.

[0327] Optionally, the computer program can be applied to the first device in the embodiment of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the first device in the various methods of the embodiment of the present application. For the sake of brevity, they are not repeated here.

[0328] Optionally, the computer program can be applied to the second device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the second device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0329] Optionally, the computer program can be applied to the first relay terminal device in the embodiment of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the first relay terminal device in the various methods of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0330] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0331] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0332] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0333] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0334] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0335] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0336] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A replication transmission method is applied to a first device. There is one or more links between the first device and a second device, and there is one or more relay terminal devices on each of the links. The method includes: Obtaining first information, where the first information is used to determine whether to activate the Packet Data Convergence Protocol (PDCP) replication transmission mechanism of the first device, and the PDCP replication transmission mechanism is used for the first device to send first data to the second device.

2. The method according to claim 1, wherein, the first information comes from the upper layer of the first device, and the first information is used to indicate: whether to activate the PDCP replication transmission mechanism; or, when the first data is of a specific service type, activate the PDCP replication transmission mechanism.

3. The method according to claim 1, wherein, the first information includes the Packet Error Rate (PER). When the PER is less than or equal to a first threshold, the PDCP replication transmission mechanism is activated.

4. The method according to claim 3, wherein, the first threshold is related to one or more of the following information: The first Quality of Service (QoS) parameter; The first measurement value; The number of the relay terminal devices; The way for the first device to obtain transmission resources; and, The Radio Link Control (RLC) mode.

5. The method according to claim 1, wherein, there are multiple links between the first device and the second device, and the first information includes: Within a first time period, the data transmission result received by the first device on a first link among the multiple links; the data transmission result comes from a first relay terminal device on the first link, and the first relay terminal device is directly connected to the first device.

6. The method according to claim 1, wherein, there is one link between the first device and the second device, and the first information includes: Within a first time period, the data transmission result received by the first device on the link; the data transmission result comes from a first relay terminal device on the link, and the first relay terminal device is directly connected to the first device.

7. The method according to claim 5 or 6, wherein, when a first condition is satisfied, the PDCP replication transmission mechanism is activated, and the first condition includes: the data transmission result includes a first number of consecutive non-acknowledgments; or, the data transmission result includes a first number of non-acknowledgments.

8. The method according to claim 1, wherein, there are multiple links between the first device and the second device, and the first information includes: Within a first time period, the data transmission results respectively received by the first device on at least two links among the multiple links; the data transmission result received by the first device on each of the at least two links comes from a first relay terminal device on the link, and the first relay terminal device is directly connected to the first device.

9. The method according to claim 8, wherein, When the second condition is satisfied, the PDCP replication transmission mechanism is activated, and the second condition includes: Each of the data transmission results includes a consecutive first number of negative acknowledgments; or, Each of the data transmission results includes a first number of negative acknowledgments; or, The sum of the numbers of consecutive negative acknowledgments included in each of the data transmission results reaches the first number; or, The sum of the numbers of negative acknowledgments included in each of the data transmission results reaches the first number.

10. The method according to claim 7 or 9, wherein, The first number is related to one or more of the following information: PER; The first QoS parameter; The first measurement value; The number of relay terminal devices; The manner in which the first device acquires transmission resources; and, The RLC mode.

11. The method according to any one of claims 5 to 10, wherein, The first duration is related to one or more of the following information: PER; The first QoS parameter; The first measurement value; The number of relay terminal devices; The manner in which the first device acquires transmission resources; and, The RLC mode.

12. The method according to any one of claims 5 to 11, wherein, The data transmission result is a hybrid automatic repeat request feedback result or an RLC feedback result.

13. The method according to claim 1, wherein, The first information includes: The data transmission result from the second device, and the data transmission result is used to determine the number of lost data in the data sent by the first device to the second device.

14. The method according to claim 13, wherein, When the number of lost data is greater than or equal to the second threshold, the PDCP replication transmission mechanism is activated.

15. The method according to claim 14, wherein, The second threshold is related to one or more of the following information: PER; The first QoS parameter; The first measurement value; The number of relay terminal devices; The manner in which the first device acquires transmission resources; and, The RLC mode.

16. The method according to any one of claims 13 to 15, wherein, The data transmission result is a PDCP status report.

17. The method according to claim 1, wherein, The first information includes: the data volume included in one or more of the PDCP layer, RLC layer, and media access control MAC layer of the first device.

18. The method according to claim 17, wherein, When the data volume is less than or equal to the third threshold, the PDCP replication transmission mechanism is activated.

19. The method according to claim 18, wherein, The third threshold is related to one or more of the following information: PER; The first QoS parameter; The first measurement value; The number of relay terminal devices; The manner in which the first device acquires transmission resources; and, The RLC mode.

20. The method according to claim 4, 10, 11, 15 or 19, wherein, The first QoS parameter includes: the priority of the first data; and / or, the packet delay budget; The first measurement value includes: the congestion degree of the resource pool; and / or, the signal quality.

21. The method according to claim 3, 4, 10, 11, 15 or 19, wherein, The first data is the first data radio bearer DRB, and the PER is the minimum value, maximum value or average value of the PER in the QoS flow associated with the first DRB.

22. The method according to any one of claims 1 to 21, wherein, There are multiple links between the first device and the second device. When the PDCP replication transmission mechanism is activated, at least two of the multiple links are used by the first device to send the first data to the second device, and the at least two links are determined by the first device.

23. The method according to claim 1, wherein, The first information is used to indicate whether to activate the PDCP replication transmission mechanism; or, When there are multiple links between the first device and the second device, the first information is used to indicate: activating the PDCP replication transmission mechanism, and at least two of the multiple links, and the at least two links are used by the first device to send the first data to the second device.

24. The method according to claim 23, wherein, The first information is a PDCP control protocol data unit from the second device.

25. The method according to claim 1, wherein, The first data includes one or more DRBs; The first information is used to indicate: Activating or deactivating the PDCP replication transmission mechanism; and, The one or more DRBs.

26. The method according to claim 25, wherein, The first information is determined based on second information from the second device, and the second information is used to indicate: The identifier of the first device; Activating or deactivating the PDCP replication transmission mechanism; and, The one or more DRBs.

27. The method according to claim 25 or 26, wherein, The first information is a MAC control unit, an RLC control protocol data unit or a sidelink relay adaptation protocol SRAP control protocol data unit from at least one first relay terminal device; the at least one first relay terminal device is respectively located on at least one link between the first device and the second device, and the at least one first relay terminal device is directly connected to the first device.

28. The method according to any one of claims 1 to 27, wherein, The first device is a terminal device, and the second device is a network device or a terminal device.

29. A replication transmission method, applied to a second device, where there is one or more links between a first device and the second device, and there is one or more relay terminal devices on each link, the method includes: Sending first information to the first device, where the first information is used to determine whether to activate the packet data convergence protocol PDCP replication transmission mechanism of the first device, and the PDCP replication transmission mechanism is used for the first device to send first data to the second device.

30. The method according to claim 29, wherein, the first information includes: a data transmission result, which is used to determine the number of lost data in the data sent from the first device to the second device.

31. The method according to claim 30, wherein, when the number of the lost data is greater than or equal to a second threshold, the PDCP replication transmission mechanism is activated.

32. The method according to claim 31, wherein, the second threshold is related to one or more of the following information: packet error rate PER; a first quality of service QoS parameter; a first measurement value; the number of relay terminal devices; the manner in which the first device acquires transmission resources; and radio link control RLC mode.

33. The method according to claim 32, wherein, the first data is a first data radio bearer DRB, and the PER is the minimum value, maximum value or average value of the PER in the QoS flow associated with the first DRB; the first QoS parameter includes: the priority of the first data; and / or, packet delay budget; the first measurement value includes: resource pool congestion degree; and / or, signal quality.

34. The method according to any one of claims 30 to 33, wherein, the data transmission result is a PDCP status report.

35. The method according to claim 29, wherein, the first information is used to indicate whether to activate the PDCP replication transmission mechanism; or when there are multiple links between the first device and the second device, the first information is used to indicate: activating the PDCP replication transmission mechanism, and at least two of the multiple links, and the at least two links are used for the first device to send the first data to the second device.

36. The method according to claim 35, wherein, the first information is a PDCP control protocol data unit.

37. The method according to any one of claims 29 to 36, wherein, the first device is a terminal device, and the second device is a network device or a terminal device.

38. A replication transmission method, applied to a first relay terminal device, the first relay terminal device is located on a first link between a first device and a second device, the first relay terminal device is directly connected to the first device, and there is one or more links between the first device and the second device, and there is one or more relay terminal devices on each link, the method comprises: sending first information to the first device, where the first information is used to determine whether to activate the packet data convergence protocol PDCP replication transmission mechanism of the first device, and the replication transmission mechanism is used for the first device to send first data to the second device.

39. The method according to claim 1, wherein, the first information includes: a data transmission result within a first duration.

40. The method according to claim 39, wherein, when a first condition is satisfied, the PDCP replication transmission mechanism is activated, and the first condition includes: The data transmission result includes a consecutive first number of negative acknowledgments; or, The data transmission result includes a first number of negative acknowledgments.

41. The method according to claim 40, wherein, The first number is related to one or more of the following information: Packet error rate PER; First quality of service QoS parameter; First measurement value; The number of relay terminal devices; The manner in which the first device acquires transmission resources; and, Radio link control RLC mode.

42. The method according to any one of claims 39 to 41, wherein, The first duration is related to one or more of the following information: PER; First QoS parameter; First measurement value; The number of relay terminal devices; The manner in which the first device acquires transmission resources; and, RLC mode.

43. The method according to claim 41 or 42, wherein, The first data is a first data radio bearer DRB, and the PER is the minimum value, maximum value, or average value of the PER in the QoS flow associated with the first DRB; The first QoS parameter includes: the priority of the first data; and / or, packet delay budget; The first measurement value includes: resource pool congestion level; and / or, signal quality.

44. The method according to any one of claims 39 to 43, wherein, The data transmission result is a hybrid automatic repeat request feedback result or an RLC feedback result.

45. The method according to claim 27, wherein, The first data includes one or more DRBs; The first information is used to indicate: Activating or deactivating the PDCP duplication transmission mechanism; and, The one or more DRBs.

46. The method according to claim 45, wherein, The first information is determined based on second information from the second device, and the second information is used to indicate: The identifier of the first device; Activating or deactivating the PDCP duplication transmission mechanism; and, The one or more DRBs.

47. The method according to claim 45 or 46, wherein, The first information is a MAC control unit, an RLC control protocol data unit, or a sidelink relay adaptation protocol SRAP control protocol data unit.

48. The method according to any one of claims 38 to 47, wherein, The first device is a terminal device, and the second device is a network device or a terminal device.

49. A duplication transmission device, there is one or more links between the device and a second device, and there is one or more relay terminal devices on each of the links, the device comprises: An acquisition unit, configured to acquire first information, where the first information is used to determine whether to activate the packet data convergence protocol PDCP duplication transmission mechanism of the device, and the PDCP duplication transmission mechanism is used for the device to send first data to the second device.

50. A duplication transmission device, there is one or more links between a first device and the device, and there is one or more relay terminal devices on each of the links, the device comprises: A first sending unit, configured to send first information to the first device, where the first information is used to determine whether to activate a packet data convergence protocol (PDCP) replication transmission mechanism of the first device, and the PDCP replication transmission mechanism is used for the first device to send first data to the apparatus.

51. A replication transmission apparatus, where the apparatus is located on a first link between a first device and a second device, the apparatus is directly connected to the first device, there is one or more links between the first device and the second device, and there is one or more relay terminal devices on each link, the apparatus comprises: A second sending unit, configured to send first information to the first device, where the first information is used to determine whether to activate a packet data convergence protocol (PDCP) replication transmission mechanism of the first device, and the replication transmission mechanism is used for the first device to send first data to the second device.

52. A communication device, comprises: A processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 37, or the method according to any one of claims 38 to 48.

53. A chip, comprises: A processor, used to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 37, or the method according to any one of claims 38 to 48.

54. A computer-readable storage medium, used to store a computer program, and the computer program enables a computer to execute the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 37, or the method according to any one of claims 38 to 48.

55. A computer program product, comprising computer program instructions, and the computer program instructions enable a computer to execute the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 37, or the method according to any one of claims 38 to 48.

56. A computer program, and the computer program enables a computer to execute the method according to any one of claims 1 to 28, or the method according to any one of claims 29 to 37, or the method according to any one of claims 38 to 48.

Images