Auxiliary information reporting method, apparatus, terminal, network device, and storage medium

Abstract

An auxiliary information reporting method, an apparatus, a terminal, a network device, and a storage medium. The method comprises: a first terminal sends a first message to a network device, wherein the first message comprises at least one of the following: identification information of a multi-hop relay link and identification information of a relay terminal on the multi-hop relay link, and the first terminal is a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

Description

Auxiliary information reporting methods, devices, terminals, network equipment, and storage media

[0001] Related applications

[0002] This application claims priority to Chinese patent application filed on July 24, 2024, application number 2024110000942, entitled “Method, Apparatus, Terminal, Network Device and Storage Medium for Auxiliary Information Reporting”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of communication technology, and in particular to an auxiliary information reporting method, apparatus, terminal, network device, and storage medium. Background Technology

[0004] To extend network coverage, the concept of a relay was introduced. A relay can be a terminal with relay functionality (a relay terminal). If a remote terminal (or the relayed terminal) cannot connect to the network device through a single relay terminal, then a multi-hop relay scenario needs to be considered. In a multi-hop relay scenario, the remote terminal connects to the network device through a multi-hop relay link formed by two or more relay terminals.

[0005] However, for the aforementioned multi-hop relay scenario, there is currently no solution for how network devices can determine which relay terminals are on the multi-hop relay links used by remote terminals when accessing the network. Summary of the Invention

[0006] Firstly, some embodiments of this disclosure provide an auxiliary information reporting method. The method includes:

[0007] A first terminal sends a first message to a network device, the first message including at least one of the following:

[0008] Identification information of multi-hop relay links;

[0009] Identification information of the relay terminal on the multi-hop relay link;

[0010] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0011] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0012] In some embodiments, the target relay terminal includes any one of the following:

[0013] Any relay terminal on the multi-hop relay link;

[0014] First relay terminal;

[0015] Second relay terminal;

[0016] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0017] In some embodiments, the method further includes:

[0018] The target relay terminal receives a second message from the previous hop node in the first transmission direction, the second message including at least one of the following:

[0019] The identification information of the multi-hop relay link;

[0020] Identification information of the relay terminal on the multi-hop relay link;

[0021] Wherein, the first transmission direction is the transmission direction from the remote terminal to the network device or the uplink transmission direction.

[0022] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0023] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0024] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0025] Identification information of all relay terminals on the multi-hop relay link;

[0026] Identification information of some relay terminals on the multi-hop relay link.

[0027] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0028] In some embodiments, the method further includes:

[0029] The remote terminal receives the first configuration information sent by the network device;

[0030] The first configuration information includes at least one of the following:

[0031] The L2 target identifier of the remote terminal;

[0032] The local identifier of the remote terminal;

[0033] The mapping relationship between the end-to-end SRB and / or DRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction;

[0034] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0035] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0036] In some embodiments, the method includes:

[0037] Any relay terminal on the multi-hop relay link receives the second configuration information sent by the network device;

[0038] or,

[0039] Any relay terminal on the multi-hop relay link receives the second configuration information from the previous hop node in the first transmission direction;

[0040] The second configuration information includes at least one of the following:

[0041] The L2 target identifier of the remote terminal;

[0042] The local identifier of the remote terminal;

[0043] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0044] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0045] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0046] In some embodiments, when the relay terminal receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0047] In some embodiments, when the relay terminal receives second configuration information from the previous hop node in the first transmission direction, the second configuration information is carried in the direct communication interface RRC reconfiguration message.

[0048] Secondly, some embodiments of this disclosure provide a method for reporting auxiliary information. The method includes:

[0049] The network device receives a first message sent by the first terminal, the first message including at least one of the following: identification information of a multi-hop relay link;

[0050] Identification information of the relay terminal on the multi-hop relay link;

[0051] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0052] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0053] In some embodiments, the target relay terminal includes any one of the following:

[0054] Any relay terminal on the multi-hop relay link;

[0055] First relay terminal;

[0056] Second relay terminal;

[0057] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0058] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0059] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0060] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0061] Identification information of all relay terminals on the multi-hop relay link;

[0062] Identification information of some relay terminals on the multi-hop relay link.

[0063] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0064] In some embodiments, the method further includes:

[0065] The network device sends first configuration information to the remote terminal;

[0066] The first configuration information includes at least one of the following:

[0067] The L2 target identifier of the remote terminal;

[0068] The local identifier of the remote terminal;

[0069] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the first direct communication link radio link layer control PC5 RLC channel;

[0070] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0071] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0072] In some embodiments, the method further includes:

[0073] The network device sends the second configuration information to any relay terminal on the multi-hop relay link.

[0074] The second configuration information includes at least one of the following:

[0075] The L2 target identifier of the remote terminal;

[0076] The local identifier of the remote terminal;

[0077] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0078] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0079] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0080] In some embodiments, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0081] Thirdly, some embodiments of this disclosure provide an auxiliary information reporting device. The auxiliary information reporting device includes:

[0082] The sending module is configured to send a first message to a network device via a first terminal, the first message including at least one of the following:

[0083] Identification information of multi-hop relay links;

[0084] Identification information of the relay terminal on the multi-hop relay link;

[0085] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0086] Fourthly, some embodiments of this disclosure provide an auxiliary information reporting device. The auxiliary information reporting device includes:

[0087] The receiving module is configured to receive a first message sent by a first terminal through a network device, wherein the first message includes at least one of the following: identification information of a multi-hop relay link;

[0088] Identification information of the relay terminal on the multi-hop relay link;

[0089] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0090] Fifthly, some embodiments of this disclosure provide a terminal. The terminal includes a memory, a transceiver, and a processor.

[0091] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

[0092] The transceiver is controlled to send a first message to the network device, the first message including at least one of the following:

[0093] Identification information of multi-hop relay links;

[0094] Identification information of the relay terminal on the multi-hop relay link;

[0095] The terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0096] In some embodiments, the target relay terminal includes any one of the following:

[0097] Any relay terminal on the multi-hop relay link;

[0098] First relay terminal;

[0099] Second relay terminal;

[0100] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0101] In some embodiments, the terminal is the target relay terminal, and the processor is further configured to perform the following operations:

[0102] The transceiver is controlled to receive a second message from the previous hop node in the first transmission direction, the second message including at least one of the following:

[0103] The identification information of the multi-hop relay link;

[0104] Identification information of the relay terminal on the multi-hop relay link;

[0105] Wherein, the first transmission direction is the transmission direction from the remote terminal to the network device or the uplink transmission direction.

[0106] In some embodiments, when the terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0107] When the terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0108] In some embodiments, the terminal is the remote terminal, and the processor is further configured to perform the following operations:

[0109] Control the transceiver to receive the first configuration information sent by the network device;

[0110] The first configuration information includes at least one of the following:

[0111] The L2 target identifier of the remote terminal;

[0112] The local identifier of the remote terminal;

[0113] The mapping relationship between the end-to-end SRB and / or DRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction;

[0114] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0115] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0116] In some embodiments, the terminal is any relay terminal on the multi-hop relay link, and the processor is further configured to perform the following operations:

[0117] Control the transceiver to receive second configuration information sent by the network device;

[0118] or,

[0119] Control the transceiver to receive second configuration information from the previous hop node in the first transmission direction;

[0120] The second configuration information includes at least one of the following:

[0121] The L2 target identifier of the remote terminal;

[0122] The local identifier of the remote terminal;

[0123] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0124] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0125] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0126] In some embodiments, when the transceiver receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device;

[0127] When the transceiver receives the second configuration information from the previous hop node in the first transmission direction, the second configuration information is carried in the direct communication interface RRC reconfiguration message.

[0128] Sixthly, some embodiments of this disclosure provide a network device. The network device includes a memory, a transceiver, and a processor.

[0129] The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

[0130] The transceiver is controlled to receive a first message sent by a first terminal, the first message including at least one of the following: identification information of a multi-hop relay link;

[0131] Identification information of the relay terminal on the multi-hop relay link;

[0132] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0133] In some embodiments, the target relay terminal includes any one of the following:

[0134] Any relay terminal on the multi-hop relay link;

[0135] First relay terminal;

[0136] Second relay terminal;

[0137] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0138] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0139] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0140] In some embodiments, the processor is further configured to perform the following operations:

[0141] Control the transceiver to send first configuration information to the remote terminal;

[0142] The first configuration information includes at least one of the following:

[0143] The L2 target identifier of the remote terminal;

[0144] The local identifier of the remote terminal;

[0145] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the first direct communication link radio link layer control PC5 RLC channel;

[0146] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0147] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0148] In some embodiments, the processor is further configured to perform the following operations:

[0149] The transceiver is controlled to send the second configuration information to any relay terminal on the multi-hop relay link.

[0150] The second configuration information includes at least one of the following:

[0151] The L2 target identifier of the remote terminal;

[0152] The local identifier of the remote terminal;

[0153] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0154] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0155] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0156] In some embodiments, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0157] In a seventh aspect, some embodiments of this disclosure provide a computer-readable storage medium. The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the methods described in the first or second aspect above.

[0158] Eighthly, some embodiments of this disclosure provide a chip. The chip includes programmable logic circuitry and / or program instructions that, when the chip is executed, implement the steps of the methods described in the first or second aspect above.

[0159] Ninthly, some embodiments of this disclosure provide a computer program product. When executed by a processor, the computer program implements the steps of the methods described in the first or second aspect above.

[0160] The aforementioned auxiliary information reporting method, apparatus, terminal, network device, and storage medium include a first terminal sending a first message to the network device. The first terminal is either a remote terminal on a multi-hop relay link or a target relay terminal on a multi-hop relay link. The first message includes at least one of the following: identification information of the multi-hop relay link and identification information of the relay terminals on the multi-hop relay link. Thus, after receiving the first message, the network device can identify each relay terminal on the multi-hop relay link based on the identification information of the multi-hop relay link and / or the identification information of the relay terminals on the multi-hop relay link included in the first message. Consequently, the network device can provide appropriate configuration information for each relay terminal on the multi-hop relay link. Attached Figure Description

[0161] To more clearly illustrate the technical solutions in some embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0162] Figure 1 is a schematic diagram of the communication method based on cellular networks in an LTE system;

[0163] Figure 2 is a schematic diagram of the direct communication method;

[0164] Figure 3 is a schematic diagram of the communication method in a single-hop relay scenario;

[0165] Figure 4 is a schematic diagram of a communication method in a multi-hop relay scenario;

[0166] Figure 5 is a schematic flowchart of the first auxiliary information reporting method in some embodiments of this disclosure;

[0167] Figure 6 is a second flowchart illustrating the auxiliary information reporting method in some other embodiments of this disclosure;

[0168] Figure 7 is a third flowchart illustrating the auxiliary information reporting method in some other embodiments of this disclosure;

[0169] Figure 8 is a fourth flowchart of the auxiliary information reporting method in some other embodiments of this disclosure;

[0170] Figure 9 is a schematic diagram of the implementation environment of the auxiliary information reporting method in some embodiments of this disclosure;

[0171] Figure 10 is a fifth flowchart of the auxiliary information reporting method in some other embodiments of this disclosure;

[0172] Figure 11 is a sixth flowchart of the auxiliary information reporting method in some other embodiments of this disclosure;

[0173] Figure 12 is a schematic diagram of the seventh process of the auxiliary information reporting method in some other embodiments of this disclosure;

[0174] Figure 13 is a schematic diagram of the eighth process of the auxiliary information reporting method in some other embodiments of this disclosure;

[0175] Figure 14 is a structural block diagram of the auxiliary information reporting device in some embodiments of this disclosure;

[0176] Figure 15 is a structural block diagram of the auxiliary information reporting device in some other embodiments of this disclosure;

[0177] Figure 16 is a schematic diagram of the structure of the first terminal in some embodiments of this disclosure;

[0178] Figure 17 is a schematic diagram of the structure of a network device in some embodiments of this disclosure;

[0179] Figure 18 is a schematic diagram of the chip structure in some embodiments of this disclosure. Detailed Implementation

[0180] The technical solutions of some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0181] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0182] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0183] In related technologies, wireless communication uses cellular networks, and terminals and network devices (such as base stations) transmit uplink and downlink data / control information through the Uu interface.

[0184] Referring to Figure 1, which is a schematic diagram of the communication method based on cellular networks in an LTE (Long Term Evolution) system, UE (User Equipment) 1 and UE2 shown in Figure 1 are different terminals. UE1 and UE2 communicate with the network device through the Uu interface, that is, UE1 and UE2 establish Uu links with the network device through the Uu interface. The network device shown in Figure 1 is a base station, which communicates with the core network (CN).

[0185] Referring to Figure 2, which is a schematic diagram of a communication method that adds direct communication between terminals to Figure 1. In Figure 2, in addition to transmitting uplink and downlink data / control information with network-side devices through the Uu interface, terminals can also communicate directly with each other.

[0186] Direct communication refers to a method in which adjacent terminals can transmit data within a short distance via a direct communication link. A direct communication link is also called a sidelink, PC5 (Proximity Communication Port 5), or bypass. The wireless interface corresponding to a direct communication link is called a direct communication interface, also known as a sidelink interface, PC5 interface, or bypass interface.

[0187] To extend network coverage, the concept of a relay was introduced. A relay can be a terminal with relay functionality (relay terminal).

[0188] For UE-to-Network Relay (U2N Relay), the interface between the relay terminal and the network device uses the Uu interface, and the interface between the relay terminal and the relayed terminal (hereinafter referred to as the remote terminal) uses the Sidelink interface (as mentioned above, also known as the direct communication interface, bypass interface, or PC5 interface).

[0189] Referring to Figure 3, which is a schematic diagram of a communication method in a single-hop relay scenario, the term "single-hop" refers to the number of relay terminals, that is, the remote terminal shown in Figure 3 can connect to the network device through a single relay terminal.

[0190] If a remote terminal cannot connect to a network device through a single relay terminal, then a multi-hop relay scenario needs to be considered. In a multi-hop relay scenario, the remote terminal connects to the network device through a multi-hop relay link formed by two or more relay terminals.

[0191] For example, referring to Figure 4, which is a schematic diagram of a communication method in a multi-hop relay scenario, the multi-hop relay link shown in Figure 4 includes relay terminal 1, relay terminal 2 and relay terminal 3. The relay terminals in Figure 4 that do not have a direct connection with the network device (such as relay terminal 1 and relay terminal 2) can also be called intermediate relays (Immediate Relay), or according to their location, they can be called U2U (UE to UE, terminal to terminal) Relay, or according to their function, they can be called U2N (UE to Network, terminal to network) Relay.

[0192] However, in the aforementioned multi-hop relay scenario, after the remote terminal discovers candidate relays during the relay discovery process, it performs a relay selection process and chooses a multi-hop relay link. However, network devices cannot know which relay terminals are on the multi-hop relay links used by the remote terminal when accessing the network. Therefore, they cannot determine which relay terminals to provide the corresponding configuration information for, which has become a pressing problem to be solved.

[0193] In view of this, some embodiments of this disclosure provide an auxiliary information reporting method, apparatus, terminal, network device, medium, and product. A first terminal sends a first message to the network device. The first terminal is a remote terminal on a multi-hop relay link or a target relay terminal on a multi-hop relay link. The first message includes at least one of the following: identification information of the multi-hop relay link, and identification information of the relay terminals on the multi-hop relay link. In this way, after receiving the first message, the network device can know each relay terminal on the multi-hop relay link based on the identification information of the multi-hop relay link and / or the identification information of the relay terminals on the multi-hop relay link included in the first message. Thus, the network device can provide appropriate configuration information for each relay terminal on the multi-hop relay link.

[0194] The terminal devices (such as remote terminals, relay terminals on multi-hop relay links) involved in some embodiments of this disclosure can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in 5G or 6G systems, the terminal device may be called User Equipment (UE). Wireless terminal devices can be USB storage devices, other personal computer memory devices, and dongles. They can also communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the radio access network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), personal computers, tablets, and Machine-type Communication (MTC) terminal devices. Wireless terminal devices can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile terminals, remote stations, access points, remote terminals, access terminals, user terminals, user agents, user devices, and wireless access devices and routers / modems that meet the limitations of this definition. Some embodiments of this disclosure are not limited to these terms.

[0195] The network devices involved in some embodiments of this disclosure may be base stations, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network devices involved in some embodiments of this disclosure may be evolved network devices (eNBs or e-NodeBs) in long-term evolution (LTE) systems, 5G base stations (gNBs) in next-generation 5G network architectures, or Home evolved Node Bs (HeNBs), relay nodes, femtos, picos, network testing equipment, etc., and are not limited in some embodiments of this disclosure. In some network architectures, network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, which may also be geographically separated.

[0196] It should be noted that the beneficial effects or technical problems solved by some embodiments of this disclosure are not limited to this one, but may also be other implicit or related problems. For details, please refer to the description of the embodiments below.

[0197] The technical solutions of this disclosure and how they solve the aforementioned technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this disclosure will now be described with reference to the accompanying drawings.

[0198] In some embodiments, as shown in FIG5, an auxiliary information reporting method is provided, including the following steps 501:

[0199] Step 501: The first terminal sends a first message to the network device. The first message includes at least one of the following:

[0200] Identification information of multi-hop trunk links; identification information of trunk terminals on multi-hop trunk links.

[0201] In some embodiments, the identification information of a multi-hop trunk link can be the link number of the multi-hop trunk link. Each multi-hop trunk link has a different link number. The link number of the multi-hop trunk link serves as the identification information of the multi-hop trunk link and can be used to uniquely identify a multi-hop trunk link. In some embodiments, the identification information of a multi-hop trunk link can also be other Path IDs (IDentity). The identification information can be used to uniquely identify a multi-hop trunk link.

[0202] In some embodiments, the identification information of a relay terminal on a multi-hop relay link can be the L2 (Layer 2) ID of the relay terminal. The L2 ID of the relay terminal serves as the identification information of the relay terminal and can be used to uniquely identify the relay terminal. In some embodiments, the identification information of the relay terminal can also be other identifiers that can be used to uniquely identify the relay terminal, such as the Cell-Radio Network Temporary Identity (C-RNTI) assigned by the network device to each relay terminal.

[0203] In some embodiments of this disclosure, the first terminal is a remote terminal on a multi-hop relay link or a target relay terminal on a multi-hop relay link. The multi-hop relay link can be a multi-hop relay link selected by the remote terminal through a relay discovery process. The relay discovery process can be a standardized relay discovery process, which will be described in the embodiments below.

[0204] In this way, after the network device receives the identification information of the multi-hop trunk link and / or the identification information of the trunk terminal on the multi-hop trunk link, the network device can determine each trunk terminal on the multi-hop trunk link based on the identification information of the multi-hop trunk link, and / or determine each trunk terminal on the multi-hop trunk link based on the identification information of the trunk terminal on the multi-hop trunk link.

[0205] For example, when the first information includes the identification information of the multi-hop trunk link, the network device can determine each trunk terminal on the multi-hop trunk link based on the identification information of the multi-hop trunk link and the information stored by the network device. The information stored by the network device may be the identification information of the multi-hop trunk link and the routing table corresponding to the identification information of the multi-hop trunk link, wherein the routing table contains the identification information of each trunk terminal on the multi-hop trunk link corresponding to the identification information of the multi-hop trunk link.

[0206] In some embodiments of this disclosure, where the first information includes the identification information of relay terminals on a multi-hop relay link, the identification information of relay terminals on a multi-hop relay link includes at least one of the following: the identification information of all relay terminals on the multi-hop relay link; or the identification information of some relay terminals on the multi-hop relay link.

[0207] In one possible implementation, if the first terminal is a remote terminal on a multi-hop trunk link, the identification information of the trunk terminal on the multi-hop trunk link in step 501 may include the identification information of all trunk terminals on the multi-hop trunk link. In this way, the network device can determine each trunk terminal on the multi-hop trunk link based on the identification information of all trunk terminals on the multi-hop trunk link included in the first message.

[0208] Additionally, when the first terminal is a remote terminal, the first message includes an end-to-end RRC (Radio Resource Control) connection establishment request message between the remote terminal and the network device, such as an RRCSetupRequest message.

[0209] In another possible implementation, if the first terminal is a target relay terminal on a multi-hop relay link, the target relay terminal may include any of the following: any relay terminal on the multi-hop relay link; a first relay terminal; a second relay terminal; wherein the first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection (i.e., a connection via a Uu interface) with the network device. Then, the identification information of the relay terminals on the multi-hop relay link in step 501 may include the identification information of all relay terminals on the multi-hop relay link, or may include the identification information of some relay terminals on the multi-hop relay link, wherein the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0210] Taking the example that the first message includes the identification information of some relay terminals on the multi-hop relay link, after the network device receives the first message sent by the target relay terminal, the network device must know the identification information of the target relay terminal as the sender of the first message. The first message also includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal. Thus, the network device can know the identification information of all relay terminals on the multi-hop relay link. In this way, the network device can determine each relay terminal on the multi-hop relay link based on the identification information of all relay terminals on the multi-hop relay link.

[0211] In addition, when the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal assistance information. Direct communication link terminal information is such as SidelinkUEInformation, and terminal assistance information is such as UEAssistanceInformation.

[0212] It should be noted that if the first message includes both the identification information of the multi-hop trunk link and the identification information of the relay terminals on the multi-hop trunk link, in one possible implementation, the network device can adopt the implementation method of the above embodiments to determine each relay terminal on the multi-hop trunk link based on the identification information of the multi-hop trunk link, or determine each relay terminal on the multi-hop trunk link based on the identification information of the relay terminals on the multi-hop trunk link; in another possible implementation, the network device can also first look up the identification information of the relay terminals on the multi-hop trunk link associated with the identification information of the multi-hop trunk link based on the stored information, and then use the found identification information of the relay terminals on the multi-hop trunk link... The network device verifies the identification information of the relay terminals on the multi-hop relay links included in the first message. If the verification is successful (i.e., the identification information of the relay terminals found on the multi-hop relay links is the same as the identification information of the relay terminals on the multi-hop relay links included in the first message), the network device then determines each relay terminal on the multi-hop relay links based on the identification information of the relay terminals on the multi-hop relay links. If the verification fails, the following operations are performed: it is determined that there is an anomaly in the terminal reporting, and configuration information is not provided to the relay terminals on the multi-hop relay links; or, an indication message is sent to the remote terminal and / or relay terminal, instructing the remote terminal and / or relay terminal to re-report the first information. This can ensure the accuracy of the network device in determining each relay terminal on the multi-hop relay links.

[0213] In the above embodiments, a first terminal sends a first message to a network device. The first terminal is a remote terminal on a multi-hop relay link or a target relay terminal on a multi-hop relay link. The first message includes at least one of the following: identification information of the multi-hop relay link and identification information of the relay terminals on the multi-hop relay link. In this way, after receiving the first message, the network device can know each relay terminal on the multi-hop relay link based on the identification information of the multi-hop relay link and / or the identification information of the relay terminals on the multi-hop relay link included in the first message. Thus, the network device can provide appropriate configuration information for each relay terminal on the multi-hop relay link.

[0214] In some embodiments, based on the embodiment shown in FIG5, when the first terminal is the target relay terminal on a multi-hop relay link, before the target relay terminal sends the first message to the network device, the target relay terminal needs to receive a second message from the previous hop node in the first transmission direction. The second message includes at least one of the following: identification information of the multi-hop relay link; identification information of the relay terminal on the multi-hop relay link.

[0215] The first transmission direction is either the transmission direction from the remote terminal to the network device or the uplink transmission direction.

[0216] For example, if the target relay terminal is the first relay terminal mentioned above, since there is a direct communication interface between the first relay terminal and the remote terminal, the target relay terminal can receive the second message from the remote terminal.

[0217] For example, if the target relay terminal is the aforementioned second relay terminal, then the target relay terminal can obtain the second message from the remote terminal, or the target relay terminal can receive the second message from the previous hop relay terminal in the transmission direction (or uplink transmission direction) from the remote terminal to the network device.

[0218] Understandably, in either case, the target relay terminal can obtain the second message, and then, based on the second message, send the first message to the network device.

[0219] In some embodiments, if the second message includes identification information of a multi-hop relay link, then the first message sent by the target relay terminal to the network device also includes identification information of the multi-hop relay link; in some embodiments, if the second message includes identification information of a relay terminal on a multi-hop relay link, then the first message sent by the target relay terminal to the network device also includes identification information of a relay terminal on a multi-hop relay link; in some embodiments, if the second message includes both identification information of a multi-hop relay link and identification information of a relay terminal on a multi-hop relay link, then the target relay terminal can determine the content of the first message itself, that is, the first message may include identification information of a multi-hop relay link and / or identification information of a relay terminal on a multi-hop relay link.

[0220] Thus, when the first terminal is the target relay terminal on a multi-hop relay link, after receiving the second message from the previous hop node in the first transmission direction, the target relay terminal can send the aforementioned first message to the network device according to the second message; when the first terminal is the remote terminal on a multi-hop relay link, since the multi-hop relay link is selected by the remote terminal, the remote terminal knows the identification information of the multi-hop relay link and / or the identification information of the relay terminals on the multi-hop relay link, so the remote terminal can directly send the aforementioned first message to the network device. After receiving the first message, the network device can know each relay terminal on the multi-hop relay link according to the identification information of the multi-hop relay link and / or the identification information of the relay terminals on the multi-hop relay link included in the first message, so the network device can provide appropriate configuration information for each relay terminal on the multi-hop relay link.

[0221] The above embodiments describe the process of a first terminal sending a first message to a network device. In this way, the network device can learn about each relay terminal on the multi-hop relay link based on the first message. Then, the network device needs to provide appropriate configuration information for each relay terminal on the multi-hop relay link and the remote terminal.

[0222] The following is an exemplary description of the process by which a network device provides appropriate configuration information for each relay terminal and remote terminal on the multi-hop relay link.

[0223] Based on the embodiment shown in FIG5, and referring to FIG6, after step 501, some embodiments of this disclosure may further include step 601 as shown in FIG6:

[0224] Step 601: The remote terminal receives the first configuration information sent by the network device.

[0225] The network device configures first configuration information for the remote terminal according to a preset configuration policy and sends the first configuration information to the remote terminal. The remote terminal receives the first configuration information sent by the network device and can then configure itself according to the first configuration information.

[0226] The first configuration information includes at least one of the following: the L2 target identifier of the remote terminal (i.e., the Layer 2 identifier of the remote terminal); the local identifier of the remote terminal; and the mapping relationship between the end-to-end SRB (Signalling Radio Bearer) and / or DRB (Data Radio Bearer) and the egress PC5 RLC (Radio Link Control) channel between the remote terminal and the network device in the first transmission direction.

[0227] Among them, the local identifier of the remote terminal is the identifier assigned to the remote terminal by the network device.

[0228] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction. The egress PC5 RLC channel is the PC5 RLC channel between the remote terminal and the next-hop relay terminal (such as the first relay terminal). The number of egress PC5 RLC channels can be one or more.

[0229] In this way, based on the mapping relationship between the end-to-end SRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction, and / or the mapping relationship between the end-to-end DRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction, the remote terminal can send signaling and / or data to the next-hop relay terminal (such as the first relay terminal) in the first transmission direction.

[0230] In one implementation, the first configuration information is carried in an end-to-end RRC connection establishment message (RRCSetup message) between the network device and the remote terminal sent by the network device.

[0231] Based on the embodiment shown in FIG5, and referring to FIG7, after step 501, some embodiments of this disclosure may further include step 701 as shown in FIG7:

[0232] Step 701: Any relay terminal on the multi-hop relay link receives the second configuration information sent by the network device; or, any relay terminal on the multi-hop relay link receives the second configuration information from the previous hop node in the first transmission direction.

[0233] The network device configures second configuration information for any relay terminal on the multi-hop relay link according to a preset configuration policy. After receiving the second configuration information, any relay terminal on the multi-hop relay link can then configure itself according to the second configuration information.

[0234] In some embodiments of this disclosure, any relay terminal on a multi-hop relay link can receive second configuration information from a network device. For example, any relay terminal is the aforementioned second relay terminal in the multi-hop relay link. When a relay terminal receives the second configuration information sent by the network device, the second configuration information can be carried in an end-to-end RRC reconfiguration message (such as an RRC Reconfiguration message) sent by the network device between the network device and the relay terminal.

[0235] In some embodiments, any relay terminal on a multi-hop relay link receives second configuration information from a second relay terminal. Any relay terminal is a relay terminal in the multi-hop relay link other than the second relay terminal mentioned above. The second configuration information may be carried in an end-to-end PC5 RRC reconfiguration message (such as an RRC Reconfiguration Sidelink message) between the relay terminal and the second relay terminal.

[0236] In some embodiments, any relay terminal on a multi-hop relay link receives second configuration information from the previous hop node in the first transmission direction. Any relay terminal is any relay terminal in the multi-hop relay link other than the second relay terminal mentioned above. When a relay terminal receives the second configuration information from the previous hop node in the first transmission direction, the second configuration information is carried in a direct communication interface PC5 RRC reconfiguration message (such as an RRC Reconfiguration Sidelink message).

[0237] The second configuration information includes at least one of the following: the L2 target identifier of the remote terminal; the local identifier of the remote terminal; the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal in the first transmission direction; and the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal in the second transmission direction.

[0238] The local identifier of the remote terminal is an identifier assigned to the remote terminal by the network device. In some embodiments, the second configuration information may further include the local identifier assigned to the relay terminal by the network terminal.

[0239] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0240] After receiving the second configuration information, any relay terminal on a multi-hop relay link can send uplink signaling and / or data, downlink signaling and / or data based on the second configuration information.

[0241] It should be noted that in some embodiments of this disclosure, step 501 may be followed by at least one of the above steps 601 and 701. In this way, after the first terminal sends the first message to the network device, the network device can know each relay terminal on the multi-hop relay link according to the first message. Then, the network device can provide appropriate configuration information for each relay terminal and remote terminal on the multi-hop relay link, so that each relay terminal and remote terminal can perform corresponding configuration.

[0242] In some embodiments, referring to Figure 8, an auxiliary information reporting method is provided. The method includes step 801 as shown in Figure 8:

[0243] Step 801: The network device receives a first message sent by the first terminal. The first message includes at least one of the following: identification information of the multi-hop trunk link; identification information of the trunk terminal on the multi-hop trunk link.

[0244] The first terminal is either a remote terminal on a multi-hop relay link or a target relay terminal on a multi-hop relay link.

[0245] In some embodiments, the identification information of a multi-hop trunk link is the link number of the multi-hop trunk link.

[0246] In some embodiments, the target relay terminal includes any of the following:

[0247] Any relay terminal on a multi-hop relay link;

[0248] First relay terminal;

[0249] Second relay terminal;

[0250] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network equipment.

[0251] In some embodiments, when the first terminal is a remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device.

[0252] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0253] In some embodiments, the identification information of the relay terminal on a multi-hop relay link includes at least one of the following:

[0254] Identification information of all relay terminals on a multi-hop relay link;

[0255] Identification information of some relay terminals on multi-hop relay links.

[0256] In some embodiments, the identification information of some relay terminals on a multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0257] In some embodiments, the method further includes:

[0258] The network device sends the first configuration information to the remote terminal;

[0259] The first configuration information includes at least one of the following:

[0260] L2 target identifier of the remote terminal;

[0261] The local identifier of the remote terminal;

[0262] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the first direct communication link radio link layer control PC5 RLC channel;

[0263] The first transmission direction is the transmission direction between the remote terminal and the network device, or the uplink transmission direction.

[0264] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message between the network device and the remote terminal sent by the network device.

[0265] In some embodiments, the method further includes:

[0266] The network device sends the second configuration information to any relay terminal on the multi-hop relay link.

[0267] The second configuration information includes at least one of the following:

[0268] L2 target identifier of the remote terminal;

[0269] The local identifier of the remote terminal;

[0270] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding egress RLC channel of the relay terminal;

[0271] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding exit RLC channel of the relay terminal;

[0272] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0273] In some embodiments, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0274] For the implementation methods and beneficial effects of the auxiliary information reporting method for network devices, please refer to the relevant descriptions in the embodiments of the auxiliary information reporting method above, which will not be repeated here.

[0275] The following four examples, combined with the relay discovery process, illustrate some embodiments of the auxiliary information reporting method of this disclosure.

[0276] Please refer to Figure 9 first. Figure 9 is a schematic diagram of the implementation environment of the auxiliary information reporting methods provided in these four examples. In Figure 9, the multi-hop relay link includes two relay terminals: a first relay terminal and a second relay terminal. The first relay terminal has a direct communication interface (PC5 interface) with the remote terminal, and the second relay terminal is connected to the network device through a Uu interface (air interface).

[0277] Example as follows:

[0278] Example 1: The first relay terminal reports the first message to the network device, and the relay discovery process of Model A is used.

[0279] Referring to Figure 10, the auxiliary information reporting method in this example includes the following steps:

[0280] Step 1: The second relay terminal and the network device establish an RRC connection.

[0281] When the second relay terminal is on the network, it can establish an RRC connection with the network device through the Uu interface.

[0282] Step 2: Establish an end-to-end RRC connection between the first relay terminal and the network device.

[0283] The first relay terminal can discover the second relay terminal through the U2N relay discovery process. Then, the first relay terminal uses the relevant standardized process to establish an end-to-end RRC connection between the second relay terminal and the network device.

[0284] In this embodiment, the relay discovery process of Model A is adopted. If the first relay terminal receives a multi-hop Relay discovery announcement message from the second relay terminal, the first relay terminal determines that if the conditions are met (e.g., the channel quality between the first relay terminal and the second relay terminal is higher than the quality threshold, the number of hops does not exceed the maximum value, etc.), the first relay terminal can forward the Relay discovery announcement message.

[0285] Step 3: The remote terminal performs relay discovery.

[0286] The remote terminal receives the Relay discovery announcement message, which allows it to discover relay terminals that can access the network device, such as the first relay terminal.

[0287] Step 4: The remote terminal performs the first relay terminal selection.

[0288] The remote terminal can select the first relay terminal based on information such as the hop count indication carried in the Relay discovery announcement message and the channel quality of the direct communication interface between the remote terminal and the first relay terminal. The channel quality of the direct communication interface includes information such as SD-RSRP (Reference Signal Receiving Power).

[0289] Step 5: Establish a direct communication interface RRC connection (PC5 connection) between the remote terminal and the first relay terminal.

[0290] Step 6: The remote terminal uses the PC5 connection with the first relay terminal to send an end-to-end RRC connection establishment request between the remote terminal and the network device to the first relay terminal.

[0291] Step 7: The first relay terminal receives the RRC connection establishment request from the remote terminal sent by the first relay terminal, and the first relay terminal sends the first message to the network device.

[0292] The first message includes at least one of the following: identification information of the multi-hop trunk link; identification information of the trunk terminal on the multi-hop trunk link.

[0293] The identification information of relay terminals on a multi-hop relay link includes the identification information (such as L2 ID) of all or some relay terminals on the multi-hop relay link.

[0294] If the message carries the identification information of some relay terminals, then these relay terminals refer to the other relay terminals on the multi-hop relay link besides the first relay terminal. In this embodiment, the first message only carries the identification information of the second relay terminal.

[0295] In addition, the first message can also carry the L2 address of the remote terminal, which is used to request the network device to assign a local identifier to the remote terminal.

[0296] The first message can be direct communication link terminal information (such as SidelinkUE Information, SUI) or terminal assistance information (such as UE Assistance Information, UAI).

[0297] Step 8: The network device sends an RRC reconfiguration message to the second relay terminal.

[0298] After receiving the first message in step 7, the network device can identify each relay terminal on the multi-hop relay link and then send an RRC reconfiguration message to each relay terminal.

[0299] For example, the second relay terminal receives an end-to-end RRC reconfiguration message from the network device, the RRC reconfiguration message including at least one of the following: the L2 target identifier of the remote terminal; the local identifier of the remote terminal;

[0300] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal; in the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal.

[0301] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0302] In some embodiments, for relay terminals other than the second relay terminal (the first relay terminal), the RRC reconfiguration message may also carry the local identifier corresponding to the other relay terminal.

[0303] Step 9: Reconfigure the direct communication interface RRC between the second relay terminal and the first relay terminal.

[0304] Step 9 is an optional step. The second relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 8, and configure the PC5 RLC channel used by the second relay terminal when forwarding / receiving remote terminal SRB and / or DRB to the first relay terminal.

[0305] Step 10: The network device sends an RRC reconfiguration message to the first relay terminal.

[0306] The first relay terminal receives an end-to-end RRC reconfiguration message from the network device. The RRC reconfiguration message includes at least one of the following: the L2 target identifier of the remote terminal; the local identifier of the remote terminal.

[0307] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal; in the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal.

[0308] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0309] In some embodiments, the RRC reconfiguration message may also carry the local identifier corresponding to the first relay terminal.

[0310] Step 11: Reconfigure the direct communication interface RRC between the first relay terminal and the remote terminal.

[0311] Step 11 is an optional step. The first relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 10, and configure the PC5 RLC channel used by the first relay terminal when forwarding / receiving the remote terminal's SRB and / or DRB.

[0312] Step 12: The second relay terminal forwards the aforementioned end-to-end RRC connection establishment request from the remote terminal to the network device.

[0313] Step 13: The network device sends an RRC connection establishment message to the remote terminal through the configured multi-hop relay link.

[0314] The RRC connection establishment message can carry the local identifier of the remote terminal, the egress RLC channel corresponding to the end-to-end SRB and / or DRB.

[0315] Step 14: The remote terminal sends an RRC reconfiguration complete message to the network device through the configured multi-hop transmission path.

[0316] Example 2: The first relay terminal reports the first message to the network device, and the relay discovery process of Model B is adopted.

[0317] Referring to Figure 11, the auxiliary information reporting method in this example includes the following steps:

[0318] Step 0: The remote terminal performs relay discovery.

[0319] In this embodiment, the relay discovery process of Model B is adopted. The remote terminal sends a Relay solicitation message to the first relay terminal. The first relay terminal can send a response message corresponding to the Relay solicitation message to the remote terminal. The response message carries the identification information of each hop relay terminal (such as user information or L2 ID).

[0320] Step 1: The remote terminal performs the first relay terminal selection.

[0321] The remote terminal can select the first relay terminal based on information such as the hop count indication information carried in the response message sent by the first relay terminal and the channel quality of the direct communication interface between the remote terminal and the first relay terminal (such as SD-RSRP).

[0322] Step 2: Establish a direct communication interface RRC connection (PC5 connection) between the remote terminal and the first relay terminal.

[0323] In some embodiments, during or after the establishment of a direct communication interface connection, the remote terminal may send a second message (PC5-RRC message and / or PC5-S message) to the first relay terminal. The second message includes at least one of the following:

[0324] Identification information of multi-hop relay links (such as Path ID);

[0325] Identification information (such as L2 ID) of all or some relay terminals on a multi-hop relay link.

[0326] Step 3: The first relay terminal establishes a direct communication interface connection (PC5 connection) between the second relay terminal and the first relay terminal.

[0327] Step 3 is optional. This step is required if there is no direct communication interface between the first relay terminal and the second relay terminal; otherwise, this step is not required.

[0328] The establishment of a direct communication interface connection between the first relay terminal and the second relay terminal can be triggered by a PC5-S / PC5-RRC message sent by the remote terminal, or by receiving an SL-RLC0 (end-to-end RRC connection establishment request) in subsequent step 6.

[0329] Step 4: Establish an end-to-end Uu connection between the first relay terminal and the network device.

[0330] Step 4 is optional. This step is required if there is no Uu connection between the second relay terminal and the network device. That is, if the second relay terminal is in the IDLE / INACTVE state, it needs to establish an RRC connection with the network device; otherwise, this step is not required.

[0331] Step 5: The first relay terminal establishes an end-to-end RRC connection with the network device through the second relay terminal.

[0332] Step 6: The remote terminal uses the PC5 connection with the first relay terminal to send an end-to-end RRC connection establishment request between itself and the network device to the first relay terminal.

[0333] In some embodiments, during step 6, the remote terminal may also send a second message to the first relay terminal, the second message including at least one of the following:

[0334] Identification information of multi-hop relay links (such as Path ID);

[0335] Identification information (such as L2 ID) of all or some relay terminals on a multi-hop relay link.

[0336] The second message can be transmitted via PC5-S or PC5-RRC signaling, or it can be carried in SL-RLC0 (end-to-end RRC connection establishment request).

[0337] It should be noted that if the remote terminal has already sent the second message to the first relay terminal in step 2, then sending the second message in step 2 can be ignored.

[0338] Step 7: The first relay terminal receives the RRC connection establishment request from the remote terminal sent by the first relay terminal, and the first relay terminal sends the first message to the network device.

[0339] The first message includes at least one of the following: identification information of the multi-hop trunk link; identification information of the trunk terminal on the multi-hop trunk link.

[0340] The identification information of relay terminals on a multi-hop relay link includes the identification information (such as L2 ID) of all or some relay terminals on the multi-hop relay link.

[0341] If the message carries the identification information of some relay terminals, then these relay terminals refer to the other relay terminals on the multi-hop relay link besides the first relay terminal. In this embodiment, the first message only carries the identification information of the second relay terminal.

[0342] In addition, the first message can also carry the L2 address of the remote terminal, which is used to request the network device to assign a local identifier to the remote terminal.

[0343] The first message can be either Direct Communication Link Terminal Information (SUI) or Terminal Assistance Information (UAI).

[0344] Step 8: The network device sends an RRC reconfiguration message to the second relay terminal.

[0345] After receiving the first message in step 7, the network device can identify each relay terminal on the multi-hop relay link and then send an RRC reconfiguration message to each relay terminal.

[0346] For example, the second relay terminal receives an end-to-end RRC reconfiguration message from the network device, the RRC reconfiguration message including at least one of the following: the L2 target identifier of the remote terminal; the local identifier of the remote terminal;

[0347] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal; in the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal.

[0348] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0349] In some embodiments, for relay terminals other than the second relay terminal (the first relay terminal), the RRC reconfiguration message may also carry the local identifier corresponding to the other relay terminal.

[0350] Step 9: Reconfigure the direct communication interface RRC between the second relay terminal and the first relay terminal.

[0351] Step 9 is an optional step. The second relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 8, and configure the PC5 RLC channel used by the second relay terminal when forwarding / receiving remote terminal SRB and / or DRB to the first relay terminal.

[0352] Step 10: The network device sends an RRC reconfiguration message to the first relay terminal.

[0353] The first relay terminal receives an end-to-end RRC reconfiguration message from the network device. The RRC reconfiguration message includes at least one of the following: the L2 target identifier of the remote terminal; the local identifier of the remote terminal.

[0354] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal; in the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal.

[0355] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0356] In some embodiments, the RRC reconfiguration message may also carry the local identifier corresponding to the first relay terminal.

[0357] Step 11: Reconfigure the direct communication interface RRC between the first relay terminal and the remote terminal.

[0358] Step 11 is an optional step. The first relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 10, and configure the PC5 RLC channel used by the first relay terminal when forwarding / receiving the remote terminal's SRB and / or DRB.

[0359] Step 12: The second relay terminal forwards the aforementioned end-to-end RRC connection establishment request from the remote terminal to the network device.

[0360] Step 13: The network device sends an RRC connection establishment message to the remote terminal through the configured multi-hop relay link.

[0361] The RRC connection establishment message can carry the local identifier of the remote terminal, the egress RLC channel corresponding to the end-to-end SRB and / or DRB.

[0362] Step 14: The remote terminal sends an RRC reconfiguration complete message to the network device through the configured multi-hop transmission path.

[0363] Example 3: The second relay terminal reports the first message to the network device, and adopts the relay discovery process of Model B in Example 2.

[0364] Referring to Figure 12, the auxiliary information reporting method in this example includes the following steps:

[0365] Step 0: The remote terminal performs relay discovery.

[0366] In this embodiment, the relay discovery process of Model B is adopted. The remote terminal sends a Relay solicitation message to the first relay terminal. The first relay terminal can send a response message corresponding to the Relay solicitation message to the remote terminal. The response message carries the identification information of each hop relay terminal (such as user information or L2 ID).

[0367] Step 1: The remote terminal performs the first relay terminal selection.

[0368] The remote terminal can select the first relay terminal based on information such as the hop count indication information carried in the response message sent by the first relay terminal and the channel quality of the direct communication interface between the remote terminal and the first relay terminal (such as SD-RSRP).

[0369] Step 2: Establish a direct communication interface RRC connection (PC5 connection) between the remote terminal and the first relay terminal.

[0370] Step 3: The first relay terminal establishes a direct communication interface connection (PC5 connection) between the second relay terminal and the first relay terminal.

[0371] Step 3 is optional. This step is required if there is no direct communication interface between the first relay terminal and the second relay terminal; otherwise, this step is not required.

[0372] The establishment of a direct communication interface connection between the first relay terminal and the second relay terminal can be triggered by a PC5-S / PC5-RRC message sent by the remote terminal, or by receiving an SL-RLC0 (end-to-end RRC connection establishment request) in subsequent step 6.

[0373] Step 4: Establish an end-to-end Uu connection between the first relay terminal and the network device.

[0374] Step 4 is optional. This step is required if there is no Uu connection between the second relay terminal and the network device. That is, if the second relay terminal is in the IDLE / INACTVE state, it needs to establish an RRC connection with the network device; otherwise, this step is not required.

[0375] Step 5: The remote terminal uses the PC5 connection with the first relay terminal to send an end-to-end RRC connection establishment request between itself and the network device to the first relay terminal.

[0376] RRC connection establishment requests are transmitted using SL-RLC0.

[0377] Step 6: The first relay terminal receives the RRC connection establishment request from the remote terminal sent by the first relay terminal. The first relay terminal forwards the RRC connection establishment request received from the remote terminal to the second relay terminal through SL-RLC0.

[0378] In step 6, the second relay terminal needs to obtain a second message, which includes at least one of the following:

[0379] Identification information of multi-hop relay links (such as Path ID);

[0380] Identification information (such as L2 ID) of all or some relay terminals on a multi-hop relay link.

[0381] In some embodiments, the second message may be sent from the first relay terminal to the second relay terminal, for example, by using a PC5-S or PC5-RRC message; the second message may also be sent from the remote terminal to the second relay terminal, for example, it may be carried in an RRCSetup message, or it may be sent along with an RRCSetup message, such as in the MAC (Media Access Control) PDU (Protocol Data Unit) header corresponding to the RRCSetup message.

[0382] Step 7: The second relay terminal receives the second message and sends the first message to the network device.

[0383] The first message includes at least one of the following: identification information of the multi-hop trunk link; identification information of the trunk terminal on the multi-hop trunk link.

[0384] The identification information of relay terminals on a multi-hop relay link includes the identification information (such as L2 ID) of all or some relay terminals on the multi-hop relay link.

[0385] If the message carries the identification information of some relay terminals, then these relay terminals refer to the other relay terminals on the multi-hop relay link besides the first relay terminal. In this embodiment, the first message only carries the identification information of the second relay terminal.

[0386] In addition, the first message can also carry the L2 address of the remote terminal, which is used to request the network device to assign a local identifier to the remote terminal.

[0387] The first message can be either Direct Communication Link Terminal Information (SUI) or Terminal Assistance Information (UAI).

[0388] Step 8: The network device sends an RRC reconfiguration message to the second relay terminal.

[0389] After receiving the first message in step 7, the network device can identify each relay terminal on the multi-hop relay link and then send an RRC reconfiguration message to each relay terminal.

[0390] For example, the second relay terminal receives an end-to-end RRC reconfiguration message from the network device, the RRC reconfiguration message including at least one of the following:

[0391] L2 target identifier of the remote terminal;

[0392] The local identifier of the remote terminal;

[0393] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding egress RLC channel of the relay terminal;

[0394] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding exit RLC channel of the relay terminal;

[0395] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0396] In some embodiments, for relay terminals other than the second relay terminal (the first relay terminal), the RRC reconfiguration message may also carry the local identifier corresponding to the other relay terminal.

[0397] Step 9: Reconfigure the direct communication interface RRC between the second relay terminal and the first relay terminal.

[0398] Step 9 is an optional step. The second relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 8, and configure the PC5 RLC channel used by the second relay terminal when forwarding / receiving remote terminal SRB and / or DRB to the first relay terminal.

[0399] Step 10: The network device sends an RRC reconfiguration message to the first relay terminal.

[0400] The first relay terminal receives an end-to-end RRC reconfiguration message from the network device, and the RRC reconfiguration message includes at least one of the following:

[0401] L2 target identifier of the remote terminal;

[0402] The local identifier of the remote terminal;

[0403] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding egress RLC channel of the relay terminal;

[0404] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding exit RLC channel of the relay terminal;

[0405] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0406] In some embodiments, the RRC reconfiguration message may also carry the local identifier corresponding to the first relay terminal.

[0407] Step 11: Reconfigure the direct communication interface RRC between the first relay terminal and the remote terminal.

[0408] Step 11 is an optional step. The first relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 10, and configure the PC5 RLC channel used by the first relay terminal when forwarding / receiving the remote terminal's SRB and / or DRB.

[0409] Step 12: The second relay terminal forwards the aforementioned end-to-end RRC connection establishment request from the remote terminal to the network device.

[0410] Step 13: The network device sends an RRC connection establishment message to the remote terminal through the configured multi-hop relay link.

[0411] The RRC connection establishment message can carry the local identifier of the remote terminal, the egress RLC channel corresponding to the end-to-end SRB and / or DRB.

[0412] Step 14: The remote terminal sends an RRC reconfiguration complete message to the network device through the configured multi-hop transmission path.

[0413] Example 4: The remote terminal reports the first message to the network device, and adopts the relay discovery process of Model B in Example 2 or Example 3.

[0414] Referring to Figure 13, the auxiliary information reporting method in this example includes the following steps:

[0415] Step 0: The remote terminal performs relay discovery.

[0416] In this embodiment, the relay discovery process of Model B is adopted. The remote terminal sends a Relay solicitation message to the first relay terminal. The first relay terminal can send a response message corresponding to the Relay solicitation message to the remote terminal. The response message carries the identification information of each hop relay terminal (such as user information or L2 ID).

[0417] Step 1: The remote terminal performs the first relay terminal selection.

[0418] The remote terminal can select the first relay terminal based on information such as the hop count indication information carried in the response message sent by the first relay terminal and the channel quality of the direct communication interface between the remote terminal and the first relay terminal (such as SD-RSRP).

[0419] Step 2: Establish a direct communication interface RRC connection (PC5 connection) between the remote terminal and the first relay terminal.

[0420] Step 3: The first relay terminal establishes a direct communication interface connection (PC5 connection) between the second relay terminal and the first relay terminal.

[0421] Step 3 is optional. This step is required if there is no direct communication interface between the first relay terminal and the second relay terminal; otherwise, this step is not required.

[0422] The establishment of a direct communication interface connection between the first relay terminal and the second relay terminal can be triggered by a PC5-S / PC5-RRC message sent by the remote terminal, or by receiving an SL-RLC0 (end-to-end RRC connection establishment request) in subsequent step 6.

[0423] Step 4: Establish an end-to-end Uu connection between the first relay terminal and the network device.

[0424] Step 4 is optional. This step is required if there is no Uu connection between the second relay terminal and the network device. That is, if the second relay terminal is in the IDLE / INACTVE state, it needs to establish an RRC connection with the network device; otherwise, this step is not required.

[0425] Step 5: The remote terminal uses the PC5 connection with the first relay terminal to send an end-to-end RRC connection establishment request between itself and the network device to the first relay terminal.

[0426] RRC connection establishment requests are transmitted using SL-RLC0.

[0427] Step 6: The first relay terminal receives the RRC connection establishment request from the remote terminal sent by the first relay terminal. The first relay terminal forwards the RRC connection establishment request received from the remote terminal to the second relay terminal through SL-RLC0.

[0428] Step 7: The second relay terminal forwards the remote terminal's RRC connection establishment request to the network device.

[0429] This process can use either a pre-configured Uu RLC channel or a specified Uu RLC channel.

[0430] The remote terminal's RRC connection establishment request carries a first message, which includes at least one of the following: identification information of the multi-hop trunk link; identification information of the trunk terminal on the multi-hop trunk link.

[0431] The identification information of relay terminals on a multi-hop relay link includes the identification information (such as L2 ID) of all or some relay terminals on the multi-hop relay link.

[0432] Step 8: The network device sends an RRC reconfiguration message to the second relay terminal.

[0433] After receiving the first message in step 7, the network device can identify each relay terminal on the multi-hop relay link and then send an RRC reconfiguration message to each relay terminal.

[0434] For example, the second relay terminal receives an end-to-end RRC reconfiguration message from the network device, the RRC reconfiguration message including at least one of the following: the L2 target identifier of the remote terminal; the local identifier of the remote terminal;

[0435] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal; in the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the corresponding egress RLC channel of the relay terminal.

[0436] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0437] In some embodiments, for relay terminals other than the second relay terminal (the first relay terminal), the RRC reconfiguration message may also carry the local identifier corresponding to the other relay terminal.

[0438] Step 9: Reconfigure the direct communication interface RRC between the second relay terminal and the first relay terminal.

[0439] Step 9 is an optional step. The second relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 8, and configure the PC5 RLC channel used by the second relay terminal when forwarding / receiving remote terminal SRB and / or DRB to the first relay terminal.

[0440] Step 10: The network device sends an RRC reconfiguration message to the first relay terminal.

[0441] The first relay terminal receives an end-to-end RRC reconfiguration message from the network device, and the RRC reconfiguration message includes at least one of the following:

[0442] L2 target identifier of the remote terminal;

[0443] The local identifier of the remote terminal;

[0444] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding egress RLC channel of the relay terminal;

[0445] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network equipment and the corresponding exit RLC channel of the relay terminal;

[0446] The first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0447] In some embodiments, the RRC reconfiguration message may also carry the local identifier corresponding to the first relay terminal.

[0448] Step 11: Reconfigure the direct communication interface RRC between the first relay terminal and the remote terminal.

[0449] Step 11 is an optional step. The first relay terminal can perform PC5 RRC reconfiguration of the direct communication interface according to the RRC reconfiguration message received in step 10, and configure the PC5 RLC channel used by the first relay terminal when forwarding / receiving the remote terminal's SRB and / or DRB.

[0450] Step 12: The network device sends an RRC connection establishment message to the remote terminal through the configured multi-hop relay link.

[0451] The RRC connection establishment message can carry the local identifier of the remote terminal, the egress RLC channel corresponding to the end-to-end SRB and / or DRB.

[0452] Step 13: The remote terminal sends an RRC reconfiguration complete message to the network device through the configured multi-hop transmission path.

[0453] It should be understood that although the steps in the flowchart above are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps.

[0454] The technical solutions provided in some embodiments of this disclosure can be applied to a variety of systems. For example, applicable systems may include Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems and their evolved communication systems, and 6G (sixth generation mobile communication technology) systems. These various systems may include terminal equipment and network equipment. The system may also include a core network component, such as an Evolved Packet Core (EPC) or a 5G core network (5GC).

[0455] Based on the same technical concept, some embodiments of this disclosure also provide an auxiliary information reporting device.

[0456] In some embodiments, as shown in FIG14, an auxiliary information reporting device is provided, the device comprising:

[0457] Sending module 1401 is configured to send a first message to a network device via a first terminal, the first message including at least one of the following:

[0458] Identification information of multi-hop relay links;

[0459] Identification information of the relay terminal on the multi-hop relay link;

[0460] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0461] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0462] In some embodiments, the target relay terminal includes any one of the following:

[0463] Any relay terminal on the multi-hop relay link;

[0464] First relay terminal;

[0465] Second relay terminal;

[0466] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0467] In some embodiments, the apparatus further includes:

[0468] The receiving module is configured to receive a second message from the previous hop node in the first transmission direction via the target relay terminal, the second message including at least one of the following:

[0469] The identification information of the multi-hop relay link;

[0470] Identification information of the relay terminal on the multi-hop relay link;

[0471] Wherein, the first transmission direction is the transmission direction from the remote terminal to the network device or the uplink transmission direction.

[0472] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0473] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0474] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0475] Identification information of all relay terminals on the multi-hop relay link;

[0476] Identification information of some relay terminals on the multi-hop relay link.

[0477] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0478] In some embodiments, the receiving module is further configured to receive first configuration information sent by the network device through the remote terminal; wherein the first configuration information includes at least one of the following:

[0479] The L2 target identifier of the remote terminal;

[0480] The local identifier of the remote terminal;

[0481] The mapping relationship between the end-to-end SRB and / or DRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction;

[0482] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0483] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0484] In some embodiments, the receiving module is further configured to receive second configuration information sent by a network device through any relay terminal on the multi-hop relay link;

[0485] or,

[0486] The second configuration information is received from the previous hop node in the first transmission direction through any relay terminal on the multi-hop relay link;

[0487] The second configuration information includes at least one of the following:

[0488] The L2 target identifier of the remote terminal;

[0489] The local identifier of the remote terminal;

[0490] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0491] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0492] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0493] In some embodiments, when the relay terminal receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0494] In some embodiments, when the relay terminal receives second configuration information from the previous hop node in the first transmission direction, the second configuration information is carried in the direct communication interface RRC reconfiguration message.

[0495] It should be noted that the auxiliary information reporting device provided in some embodiments of this disclosure can implement all the method steps of the above-described auxiliary information reporting method embodiment for a first terminal (the first terminal is a remote terminal on a multi-hop relay link or a target relay terminal on a multi-hop relay link) or any relay terminal on a multi-hop relay link, and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0496] Each module in the aforementioned auxiliary information reporting device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware within or independently of the processor in the first terminal or any relay terminal on the multi-hop relay link, or stored in software within the memory of the first terminal or any relay terminal on the multi-hop relay link, so that the processor can call and execute the operations corresponding to each module.

[0497] Based on the same technical concept, some embodiments of this disclosure also provide an auxiliary information reporting device. This auxiliary information reporting device can realize the functions of the network devices in the foregoing embodiments.

[0498] In some embodiments, as shown in FIG15, an auxiliary information reporting device is provided, which is disposed in a network device, the device comprising:

[0499] The receiving module 1501 is configured to receive a first message sent by a first terminal through a network device, wherein the first message includes at least one of the following: identification information of a multi-hop relay link;

[0500] Identification information of the relay terminal on the multi-hop relay link;

[0501] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0502] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0503] In some embodiments, the target relay terminal includes any one of the following:

[0504] Any relay terminal on the multi-hop relay link;

[0505] First relay terminal;

[0506] Second relay terminal;

[0507] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0508] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0509] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0510] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0511] Identification information of all relay terminals on the multi-hop relay link;

[0512] Identification information of some relay terminals on the multi-hop relay link.

[0513] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0514] In some embodiments, the apparatus further includes:

[0515] A sending module is used to send first configuration information to the remote terminal through the network device;

[0516] The first configuration information includes at least one of the following:

[0517] The L2 target identifier of the remote terminal;

[0518] The local identifier of the remote terminal;

[0519] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the first direct communication link radio link layer control PC5 RLC channel;

[0520] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0521] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0522] In some embodiments, the sending module is further configured to send second configuration information to any relay terminal on a multi-hop relay link via the network device;

[0523] The second configuration information includes at least one of the following:

[0524] The L2 target identifier of the remote terminal;

[0525] The local identifier of the remote terminal;

[0526] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0527] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0528] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0529] In some embodiments, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0530] It should be noted that the auxiliary information reporting device provided in some embodiments of this disclosure can implement all the method steps implemented in the above-described auxiliary information reporting method embodiments for network devices, and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiments will not be described in detail here.

[0531] Each module in the aforementioned auxiliary information reporting device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the network device in hardware form or independent of it, or stored in the memory of the network device in software form, so that the processor can call and execute the corresponding operations of each module.

[0532] Based on the same technical concept, some embodiments of this disclosure also provide a terminal. This terminal can realize the functions of the first terminal or any relay terminal on a multi-hop relay link in the foregoing embodiments.

[0533] Figure 16 is a schematic diagram of the structure of a terminal provided in some embodiments of this disclosure. The terminal may include a processor 1600, a transceiver 1610, and a memory 1620. The transceiver 1610 is used to receive and send data under the control of the processor 1600.

[0534] In Figure 16, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1600 and memory represented by memory 1620. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface.

[0535] The transceiver 1610 may consist of multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, and other transmission media. For different user equipment, the user interface may also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0536] The processor 1600 is responsible for managing the bus architecture and general processing, while the memory 1620 can store the data used by the processor 1600 during operation.

[0537] In some embodiments, the processor 1600 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), a FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). The processor 1600 may also employ a multi-core architecture. The processor 1600 and the memory 1620 may also be physically separated.

[0538] The processor 1600 invokes a program stored in memory to perform the following steps according to the obtained executable instructions:

[0539] The transceiver 1610 is controlled to send a first message to the network device, the first message including at least one of the following:

[0540] Identification information of multi-hop relay links;

[0541] Identification information of the relay terminal on the multi-hop relay link;

[0542] The terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0543] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0544] In some embodiments, the target relay terminal includes any one of the following:

[0545] Any relay terminal on the multi-hop relay link;

[0546] First relay terminal;

[0547] Second relay terminal;

[0548] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0549] In some embodiments, when the terminal is the target relay terminal, the processor 1600 is further configured to perform the following operations:

[0550] The transceiver 1610 is controlled to receive a second message from the previous hop node in the first transmission direction, the second message including at least one of the following:

[0551] The identification information of the multi-hop relay link;

[0552] Identification information of the relay terminal on the multi-hop relay link;

[0553] Wherein, the first transmission direction is the transmission direction from the remote terminal to the network device or the uplink transmission direction.

[0554] In some embodiments, when the terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0555] When the terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0556] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0557] Identification information of all relay terminals on the multi-hop relay link;

[0558] Identification information of some relay terminals on the multi-hop relay link.

[0559] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0560] In some embodiments, when the terminal is the remote terminal, the processor 1600 is further configured to perform the following operations:

[0561] The transceiver 1610 is controlled to receive the first configuration information sent by the network device;

[0562] The first configuration information includes at least one of the following:

[0563] The L2 target identifier of the remote terminal;

[0564] The local identifier of the remote terminal;

[0565] The mapping relationship between the end-to-end SRB and / or DRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction;

[0566] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0567] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0568] In some embodiments, when the terminal is any relay terminal on the multi-hop relay link, the processor 1600 is further configured to perform the following operations:

[0569] The transceiver 1610 is controlled to receive second configuration information sent by the network device;

[0570] or,

[0571] Control the transceiver 1610 to receive second configuration information from the previous hop node in the first transmission direction;

[0572] The second configuration information includes at least one of the following:

[0573] The L2 target identifier of the remote terminal;

[0574] The local identifier of the remote terminal;

[0575] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0576] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0577] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0578] In some embodiments, when the relay terminal receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0579] In some embodiments, when the relay terminal receives second configuration information from the previous hop node in the first transmission direction, the second configuration information is carried in the direct communication interface RRC reconfiguration message.

[0580] Based on the same technical concept, some embodiments of this disclosure also provide a network device. This network device can implement the functions of the network device in the foregoing embodiments.

[0581] Figure 17 is a schematic diagram of the structure of a network device provided in some embodiments of this disclosure. The network device may include a processor 1700, a transceiver 1710, and a memory 1720. The transceiver 1710 is used to receive and transmit data under the control of the processor 1700.

[0582] In Figure 17, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1700 and memory represented by memory 1720. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface.

[0583] The transceiver 1710 may consist of multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. The processor 1700 is responsible for managing the bus architecture and general processing, and the memory 1720 can store data used by the processor 1700 during operation.

[0584] The processor 1700 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor 1700 can also adopt a multi-core architecture.

[0585] Processor 1700 executes the following steps according to the obtained executable instructions by calling the program stored in memory 1720:

[0586] The transceiver 1710 is controlled to receive a first message sent by a first terminal, the first message including at least one of the following: identification information of a multi-hop relay link;

[0587] Identification information of the relay terminal on the multi-hop relay link;

[0588] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0589] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0590] In some embodiments, the target relay terminal includes any one of the following:

[0591] Any relay terminal on the multi-hop relay link;

[0592] First relay terminal;

[0593] Second relay terminal;

[0594] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0595] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0596] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0597] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0598] Identification information of all relay terminals on the multi-hop relay link;

[0599] Identification information of some relay terminals on the multi-hop relay link.

[0600] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0601] In some embodiments, the processor 1700 is further configured to perform the following operations:

[0602] Control the transceiver 1710 to send the first configuration information to the remote terminal;

[0603] The first configuration information includes at least one of the following:

[0604] The L2 target identifier of the remote terminal;

[0605] The local identifier of the remote terminal;

[0606] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the first direct communication link radio link layer control PC5 RLC channel;

[0607] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0608] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0609] In some embodiments, the processor 1700 is further configured to perform the following operations:

[0610] The transceiver 1710 is controlled to send second configuration information to any relay terminal on the multi-hop relay link.

[0611] The second configuration information includes at least one of the following:

[0612] The L2 target identifier of the remote terminal;

[0613] The local identifier of the remote terminal;

[0614] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0615] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0616] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0617] In some embodiments, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0618] In some embodiments, a computer-readable storage medium is provided, which may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO) etc.), optical memory (e.g., CD, DVD, BD, HVD etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD) etc.).

[0619] In some embodiments, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0620] A first message is sent from a first terminal to a network device, the first message including at least one of the following:

[0621] Identification information of multi-hop relay links;

[0622] Identification information of the relay terminal on the multi-hop relay link;

[0623] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0624] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0625] In some embodiments, the target relay terminal includes any one of the following:

[0626] Any relay terminal on the multi-hop relay link;

[0627] First relay terminal;

[0628] Second relay terminal;

[0629] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0630] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0631] The target relay terminal receives a second message from the previous hop node in the first transmission direction, the second message including at least one of the following:

[0632] The identification information of the multi-hop relay link;

[0633] Identification information of the relay terminal on the multi-hop relay link;

[0634] Wherein, the first transmission direction is the transmission direction from the remote terminal to the network device or the uplink transmission direction.

[0635] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0636] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0637] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0638] Identification information of all relay terminals on the multi-hop relay link;

[0639] Identification information of some relay terminals on the multi-hop relay link.

[0640] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0641] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0642] The remote terminal receives the first configuration information sent by the network device.

[0643] The first configuration information includes at least one of the following:

[0644] The L2 target identifier of the remote terminal;

[0645] The local identifier of the remote terminal;

[0646] The mapping relationship between the end-to-end SRB and / or DRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction;

[0647] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0648] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0649] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0650] The second configuration information sent by the network device is received through any relay terminal on the multi-hop relay link;

[0651] or,

[0652] The second configuration information is received from the previous hop node in the first transmission direction through any relay terminal on the multi-hop relay link;

[0653] The second configuration information includes at least one of the following:

[0654] The L2 target identifier of the remote terminal;

[0655] The local identifier of the remote terminal;

[0656] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0657] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0658] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0659] In some embodiments, when the relay terminal receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0660] In some embodiments, when the relay terminal receives second configuration information from the previous hop node in the first transmission direction, the second configuration information is carried in the direct communication interface RRC reconfiguration message.

[0661] In some embodiments, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0662] The network device receives a first message sent by a first terminal, the first message including at least one of the following: identification information of a multi-hop relay link;

[0663] Identification information of the relay terminal on the multi-hop relay link;

[0664] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0665] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0666] In some embodiments, the target relay terminal includes any one of the following:

[0667] Any relay terminal on the multi-hop relay link;

[0668] First relay terminal;

[0669] Second relay terminal;

[0670] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0671] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0672] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0673] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0674] Identification information of all relay terminals on the multi-hop relay link;

[0675] Identification information of some relay terminals on the multi-hop relay link.

[0676] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0677] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0678] The network device sends the first configuration information to the remote terminal.

[0679] The first configuration information includes at least one of the following:

[0680] The L2 target identifier of the remote terminal;

[0681] The local identifier of the remote terminal;

[0682] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the first direct communication link radio link layer control PC5 RLC channel;

[0683] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0684] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0685] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0686] The network device sends the second configuration information to any relay terminal on the multi-hop relay link.

[0687] The second configuration information includes at least one of the following:

[0688] The L2 target identifier of the remote terminal;

[0689] The local identifier of the remote terminal;

[0690] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0691] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0692] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0693] In some embodiments, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0694] Figure 18 is a schematic structural diagram of a chip according to some embodiments of the present disclosure. The chip 1800 shown in Figure 18 includes a processor 1810, which can call and run computer programs from memory to implement the methods in some embodiments of the present disclosure.

[0695] In some embodiments, as shown in FIG18, chip 1800 may further include memory 1820. Processor 1810 may retrieve and run computer programs from memory 1820 to implement methods in some embodiments of this disclosure.

[0696] The memory 1820 can be a separate device independent of the processor 1810, or it can be integrated into the processor 1810.

[0697] In some embodiments, the chip 1800 may further include an input interface 1830. The processor 1810 can control the input interface 1830 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0698] In some embodiments, the chip 1800 may further include an output interface 1840. The processor 1810 can control the output interface 1840 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0699] In some embodiments, the chip 1800 can be applied to network element devices in some embodiments of this disclosure, and the chip 1800 can implement the corresponding processes implemented in various methods of some embodiments of this disclosure. For the sake of brevity, these will not be described in detail here.

[0700] It should be understood that the chip 1800 mentioned in some embodiments of this disclosure may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0701] In some embodiments, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0702] In some embodiments, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0703] A first message is sent from a first terminal to a network device, the first message including at least one of the following:

[0704] Identification information of multi-hop relay links;

[0705] Identification information of the relay terminal on the multi-hop relay link;

[0706] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0707] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0708] In some embodiments, the target relay terminal includes any one of the following:

[0709] Any relay terminal on the multi-hop relay link;

[0710] First relay terminal;

[0711] Second relay terminal;

[0712] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0713] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0714] The target relay terminal receives a second message from the previous hop node in the first transmission direction, the second message including at least one of the following:

[0715] The identification information of the multi-hop relay link;

[0716] Identification information of the relay terminal on the multi-hop relay link;

[0717] Wherein, the first transmission direction is the transmission direction from the remote terminal to the network device or the uplink transmission direction.

[0718] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0719] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0720] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0721] Identification information of all relay terminals on the multi-hop relay link;

[0722] Identification information of some relay terminals on the multi-hop relay link.

[0723] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0724] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0725] The remote terminal receives the first configuration information sent by the network device.

[0726] The first configuration information includes at least one of the following:

[0727] The L2 target identifier of the remote terminal;

[0728] The local identifier of the remote terminal;

[0729] The mapping relationship between the end-to-end SRB and / or DRB and the egress PC5 RLC channel between the remote terminal and the network device in the first transmission direction;

[0730] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0731] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0732] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0733] The second configuration information sent by the network device is received through any relay terminal on the multi-hop relay link;

[0734] or,

[0735] The second configuration information is received from the previous hop node in the first transmission direction through any relay terminal on the multi-hop relay link;

[0736] The second configuration information includes at least one of the following:

[0737] The L2 target identifier of the remote terminal;

[0738] The local identifier of the remote terminal;

[0739] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0740] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0741] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0742] In some embodiments, when the relay terminal receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0743] In some embodiments, when the relay terminal receives second configuration information from the previous hop node in the first transmission direction, the second configuration information is carried in the direct communication interface RRC reconfiguration message.

[0744] In some embodiments, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0745] The network device receives a first message sent by a first terminal, the first message including at least one of the following: identification information of a multi-hop relay link;

[0746] Identification information of the relay terminal on the multi-hop relay link;

[0747] The first terminal is either a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

[0748] In some embodiments, the identification information of the multi-hop relay link is the link number of the multi-hop relay link.

[0749] In some embodiments, the target relay terminal includes any one of the following:

[0750] Any relay terminal on the multi-hop relay link;

[0751] First relay terminal;

[0752] Second relay terminal;

[0753] The first relay terminal is a relay terminal that has a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal that has an air interface connection with the network device.

[0754] In some embodiments, when the first terminal is the remote terminal, the first message includes an end-to-end Radio Resource Control (RRC) connection establishment request message between the remote terminal and the network device;

[0755] When the first terminal is the target relay terminal, the first message includes direct communication link terminal information and / or terminal auxiliary information.

[0756] In some embodiments, the identification information of the relay terminal on the multi-hop relay link includes at least one of the following:

[0757] Identification information of all relay terminals on the multi-hop relay link;

[0758] Identification information of some relay terminals on the multi-hop relay link.

[0759] In some embodiments, the identification information of some relay terminals on the multi-hop relay link includes the identification information of each relay terminal on the multi-hop relay link other than the target relay terminal.

[0760] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0761] The network device sends the first configuration information to the remote terminal.

[0762] The first configuration information includes at least one of the following:

[0763] The L2 target identifier of the remote terminal;

[0764] The local identifier of the remote terminal;

[0765] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the first direct communication link radio link layer control PC5 RLC channel;

[0766] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction.

[0767] In some embodiments, the first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device between the network device and the remote terminal.

[0768] In some embodiments, when a computer program is executed by a processor, it further performs the following steps:

[0769] The network device sends the second configuration information to any relay terminal on the multi-hop relay link.

[0770] The second configuration information includes at least one of the following:

[0771] The L2 target identifier of the remote terminal;

[0772] The local identifier of the remote terminal;

[0773] In the first transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0774] In the second transmission direction, the mapping relationship between the end-to-end SRB and / or DRB between the remote terminal and the network device and the egress RLC channel corresponding to the relay terminal;

[0775] Wherein, the first transmission direction is the transmission direction between the remote terminal and the network device or the uplink transmission direction; the second transmission direction is the transmission direction between the network device and the remote terminal or the downlink transmission direction.

[0776] In some embodiments, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

[0777] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this disclosure can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0778] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0779] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the scope of protection of this disclosure. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for reporting assistance information, wherein, The method comprises: The first terminal sends a first message to the network device, the first message comprising at least one of: identification information of the multi-hop relay link; identification information of relay terminals on the multi-hop relay link; The first terminal is a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

2. The method of claim 1, wherein, The identification information of the multi-hop relay link is a link number of the multi-hop relay link.

3. The method of claim 1, wherein, The target relay terminal comprises any one of: any relay terminal on the multi-hop relay link; a first relay terminal; a second relay terminal; The first relay terminal is a relay terminal having a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal having an air interface connection with the network device.

4. The method of claim 3, wherein, The method further comprises: The target relay terminal receives a second message from a previous hop node in a first transmission direction, the second message comprising at least one of: identification information of the multi-hop relay link; identification information of relay terminals on the multi-hop relay link; The first transmission direction is a transmission direction from the remote terminal to the network device or an uplink transmission direction.

5. The method of claim 1, wherein, In the case where the first terminal is the remote terminal, the first message comprises an end-to-end radio resource control (RRC) connection establishment request message between the remote terminal and the network device. In the case where the first terminal is the target relay terminal, the first message comprises direct communication link terminal information and / or terminal assistance information.

6. The method of claim 1 or 4, wherein, The identification information of relay terminals on the multi-hop relay link comprises at least one of: identification information of all relay terminals on the multi-hop relay link; identification information of part of the relay terminals on the multi-hop relay link.

7. The method of claim 6, wherein, The identification information of part of the relay terminals on the multi-hop relay link comprises identification information of each relay terminal on the multi-hop relay link except the target relay terminal.

8. The method of claim 1, wherein, The method further comprises: The remote terminal receives first configuration information sent by the network device; The first configuration information comprises at least one of: an L2 target identifier of the remote terminal; a local identifier of the remote terminal; a mapping relationship between end-to-end SRB and / or DRB and an exit PC5 RLC channel between the remote terminal and the network device in a first transmission direction; The first transmission direction is a transmission direction from the remote terminal to the network device or an uplink transmission direction.

9. The method of claim 8, wherein, The first configuration information is carried in an end-to-end RRC connection establishment message between the network device and the remote terminal sent by the network device.

10. The method of claim 1 or 3, wherein, The method comprises: Any relay terminal on the multi-hop relay link receives second configuration information sent by the network device; Or, Any relay terminal on the multi-hop relay link receives second configuration information from a previous hop node in a first transmission direction; The second configuration information comprises at least one of: an L2 target identifier of the remote terminal; a local identifier of the remote terminal; A mapping relationship between an end-to-end SRB and / or DRB between the remote terminal and the network device and an egress RLC channel corresponding to the relay terminal in a first transmission direction; A mapping relationship between an end-to-end SRB and / or DRB between the remote terminal and the network device and an egress RLC channel corresponding to the relay terminal in a second transmission direction; The first transmission direction is a transmission direction between the remote terminal and the network device or an uplink transmission direction, and the second transmission direction is a transmission direction between the network device and the remote terminal or a downlink transmission direction.

11. The method of claim 10, wherein, In a case where the relay terminal receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

12. The method of claim 10, wherein, In a case where the relay terminal receives second configuration information from a previous hop node in the first transmission direction, the second configuration information is carried in a direct communication interface RRC reconfiguration message.

13. A method for reporting assistance information, wherein, The method comprises: The network device receives a first message sent by a first terminal, and the first message comprises at least one of the following: identification information of a multi-hop relay link; identification information of a relay terminal on the multi-hop relay link; The first terminal is a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

14. The method of claim 13, wherein, The identification information of the multi-hop relay link is a link number of the multi-hop relay link.

15. The method of claim 13, wherein, The target relay terminal comprises any one of the following: any relay terminal on the multi-hop relay link; a first relay terminal; a second relay terminal; The first relay terminal is a relay terminal having a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal having an air interface connection with the network device.

16. The method of claim 13, wherein, In a case where the first terminal is the remote terminal, the first message comprises an end-to-end radio resource control (RRC) connection establishment request message between the remote terminal and the network device. In a case where the first terminal is the target relay terminal, the first message comprises direct communication link terminal information and / or terminal assistance information.

17. The method of any one of claims 13 to 16, wherein, The identification information of the relay terminal on the multi-hop relay link comprises at least one of the following: identification information of all relay terminals on the multi-hop relay link; identification information of part of the relay terminals on the multi-hop relay link.

18. The method of claim 17, wherein, The identification information of part of the relay terminals on the multi-hop relay link comprises identification information of each relay terminal on the multi-hop relay link except the target relay terminal.

19. The method of claim 13, wherein, The method further comprises: The network device sends first configuration information to the remote terminal; The first configuration information comprises at least one of the following: an L2 target identifier of the remote terminal; a local identifier of the remote terminal; a mapping relationship between an end-to-end SRB and / or DRB between the remote terminal and the network device and a first direct communication link radio link layer control (PC5 RLC) channel in a first transmission direction; The first transmission direction is a transmission direction between the remote terminal and the network device or an uplink transmission direction.

20. The method of claim 19, wherein, The first configuration information is carried in an end-to-end RRC connection establishment message sent by the network device and between the network device and the remote terminal.

21. The method of claim 13, wherein, The method further includes: The network device sends second configuration information to any relay terminal on the multi-hop relay link, The second configuration information includes at least one of the following: an L2 target identifier of the remote terminal; a local identifier of the remote terminal; a mapping relationship between end-to-end SRBs and / or DRBs between the remote terminal and the network device and corresponding egress RLC channels of the relay terminal in a first transmission direction; a mapping relationship between end-to-end SRBs and / or DRBs between the remote terminal and the network device and corresponding egress RLC channels of the relay terminal in a second transmission direction; The first transmission direction is a transmission direction between the remote terminal and the network device or an uplink transmission direction; and the second transmission direction is a transmission direction between the network device and the remote terminal or a downlink transmission direction.

22. The method of claim 21, wherein, The second configuration information is carried in an end-to-end RRC reconfiguration message sent by the network device and between the network device and the relay terminal.

23. An assistance information reporting apparatus, wherein, The apparatus includes: A sending module configured to send, by a first terminal, a first message to a network device, the first message including at least one of the following: identification information of a multi-hop relay link; identification information of a relay terminal on the multi-hop relay link; The first terminal is a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

24. An assistance information reporting apparatus, wherein, The apparatus includes: A receiving module configured to receive, by a network device, a first message sent by a first terminal, the first message including at least one of the following: identification information of a multi-hop relay link; identification information of a relay terminal on the multi-hop relay link; 25. A terminal, wherein, The first terminal is a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link. includes a memory, a transceiver, and a processor: The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: control the transceiver to send a first message to a network device, the first message including at least one of the following: identification information of a multi-hop relay link; identification information of a relay terminal on the multi-hop relay link; 26. The terminal of claim 25, wherein, The terminal is a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link. The target relay terminal includes any of the following: any relay terminal on the multi-hop relay link; a first relay terminal; a second relay terminal; 27. The terminal of claim 26, wherein, The first relay terminal is a relay terminal having a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal having an air interface connection with the network device. The terminal is the target relay terminal, and the processor is further configured to perform the following operations: control the transceiver to receive a second message from a previous hop node in a first transmission direction, the second message comprising at least one of: identification information of the multi-hop relay link; identification information of a relay terminal on the multi-hop relay link; wherein the first transmission direction is a transmission direction from the remote terminal to the network device or an uplink transmission direction.

28. The terminal of claim 25, wherein, in a case where the terminal is the remote terminal, the first message comprises an end-to-end radio resource control (RRC) connection setup request message between the remote terminal and the network device; in a case where the terminal is the target relay terminal, the first message comprises direct communication link terminal information and / or terminal assistance information.

29. The terminal of claim 25, wherein, in a case where the terminal is the remote terminal, the processor is further configured to perform the following operation: control the transceiver to receive first configuration information sent by the network device; wherein the first configuration information comprises at least one of: an L2 target identity of the remote terminal; a local identity of the remote terminal; a mapping relationship between end-to-end SRB and / or DRB between the remote terminal and the network device in a first transmission direction and an exit PC5 RLC channel; wherein the first transmission direction is a transmission direction from the remote terminal to the network device or an uplink transmission direction.

30. The terminal of claim 29, wherein, the first configuration information is carried in an end-to-end RRC connection setup message between the network device and the remote terminal sent by the network device.

31. The terminal according to claim 25 or 26, wherein in a case where the terminal is any relay terminal on the multi-hop relay link, the processor is further configured to perform the following operation: control the transceiver to receive second configuration information sent by the network device; or, control the transceiver to receive second configuration information from a previous hop node in a first transmission direction; wherein the second configuration information comprises at least one of: an L2 target identity of the remote terminal; a local identity of the remote terminal; a mapping relationship between end-to-end SRB and / or DRB between the remote terminal and the network device in a first transmission direction and an exit RLC channel corresponding to the relay terminal; a mapping relationship between end-to-end SRB and / or DRB between the remote terminal and the network device in a second transmission direction and an exit RLC channel corresponding to the relay terminal; wherein the first transmission direction is a transmission direction from the remote terminal to the network device or an uplink transmission direction; and the second transmission direction is a transmission direction from the network device to the remote terminal or a downlink transmission direction.

32. The terminal of claim 31, wherein, in a case where the transceiver receives second configuration information sent by the network device, the second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device; in a case where the transceiver receives second configuration information from a previous hop node in a first transmission direction, the second configuration information is carried in a direct communication interface RRC reconfiguration message.

33. A network device, wherein, comprise a memory, a transceiver, a processor: The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: controlling the transceiver to receive a first message sent by a first terminal, the first message comprising at least one of the following: identification information of a multi-hop relay link; identification information of a relay terminal on the multi-hop relay link; wherein the first terminal is a remote terminal on the multi-hop relay link or a target relay terminal on the multi-hop relay link.

34. The network device of claim 33, wherein, The target relay terminal comprises any one of the following: any relay terminal on the multi-hop relay link; a first relay terminal; a second relay terminal; wherein the first relay terminal is a relay terminal having a direct communication interface with the remote terminal, and the second relay terminal is a relay terminal having an air interface connection with the network device.

35. The network device of claim 33, wherein, In a case where the first terminal is the remote terminal, the first message comprises an end-to-end radio resource control (RRC) connection establishment request message between the remote terminal and the network device. In a case where the first terminal is the target relay terminal, the first message comprises direct communication link terminal information and / or terminal assistance information.

36. The network device of claim 33, wherein, The processor is further configured to perform the following operations: controlling the transceiver to send first configuration information to the remote terminal; wherein the first configuration information comprises at least one of the following: an L2 target identifier of the remote terminal; a local identifier of the remote terminal; a mapping relationship between end-to-end SRBs and / or DRBs between the remote terminal and the network device and first direct communication link radio link layer control (PC5 RLC) channels in a first transmission direction; wherein the first transmission direction is a transmission direction between the remote terminal and the network device or an uplink transmission direction.

37. The network device of claim 36, wherein, The first configuration information is carried in an end-to-end RRC connection establishment message between the network device and the remote terminal sent by the network device.

38. The network device of claim 33, wherein, The processor is further configured to perform the following operations: controlling the transceiver to send second configuration information to any relay terminal on the multi-hop relay link, wherein the second configuration information comprises at least one of the following: an L2 target identifier of the remote terminal; a local identifier of the remote terminal; a mapping relationship between end-to-end SRBs and / or DRBs between the remote terminal and the network device and an exit RLC channel corresponding to the relay terminal in a first transmission direction; a mapping relationship between end-to-end SRBs and / or DRBs between the remote terminal and the network device and an exit RLC channel corresponding to the relay terminal in a second transmission direction; wherein the first transmission direction is a transmission direction from the remote terminal to the network device or an uplink transmission direction; and the second transmission direction is a transmission direction from the network device to the remote terminal or a downlink transmission direction.

39. The network device of claim 38, wherein, The second configuration information is carried in an end-to-end RRC reconfiguration message between the network device and the relay terminal sent by the network device.

40. A computer readable storage medium having stored thereon a computer program, wherein, The computer program, which is executed by a processor, implements the steps of the method according to any one of claims 1 to 12, or the computer program, which is executed by a processor, implements the steps of the method according to any one of claims 13 to 22.

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