CN117015987A - Communication method, device and storage medium - Google Patents

Abstract

The present disclosure relates to a communication method, device and storage medium. The method includes: the first terminal sends first indication information to the relay terminal, and receives service data sent by the relay terminal; the first indication information is used to indicate the first service that the first terminal expects to receive, and the service data is the first service. Data corresponding to the first service that a terminal expects to receive. In this way, the first terminal can receive the service data of the first service through the relay terminal, thereby supporting multiple services through the relay terminal.

Description

Communication method, device and storage medium

Technical field

The present disclosure relates to the field of communication technology, and specifically, to a communication method, device and storage medium.

Background technique

With the development of wireless communication technology, in order to achieve direct communication between terminal devices, the 3rd Generation Partnership Project (3GPP) has defined a direct link (Sidelink, also known as a side link). road or sidelink) communication method. For example, a typical application scenario of direct links is Vehicle-to-Everything (V2X). In the Internet of Vehicles, each vehicle can serve as a terminal, and information can be transmitted between terminals through direct links, which can effectively reduce communication delays.

Contents of the invention

Embodiments of the present disclosure provide a communication method, device and storage medium.

According to a first aspect of an embodiment of the present disclosure, a communication method is provided, executed by a first terminal, and the method includes:

Send first indication information to the relay terminal; wherein the first indication information is used to indicate the first service that the first terminal expects to receive;

Receive service data sent by the relay terminal; the service data is data corresponding to the first service that the first terminal expects to receive.

According to a second aspect of the embodiment of the present disclosure, a communication method is provided, which is performed by a relay terminal. The method includes:

Receive first indication information sent by the first terminal; wherein the first indication information is used to indicate the first service that the first terminal expects to receive;

Send service data to the first terminal; the service data is data corresponding to the first service that the first terminal expects to receive.

According to a third aspect of an embodiment of the present disclosure, a communication method is provided, executed by a network device, and the method includes:

Send service data to the relay terminal; the service data is used by the relay terminal to forward data to the first terminal according to first indication information, and the first indication information is used to indicate that the first terminal expects to receive the first business.

According to a fourth aspect of the embodiments of the present disclosure, a first terminal is provided, including:

The first sending module is configured to send first indication information to the relay terminal; wherein the first indication information is used to indicate the first service that the first terminal expects to receive;

The first receiving module is configured to receive service data sent by the relay terminal; the service data is data corresponding to the first service that the first terminal expects to receive.

According to a fifth aspect of the embodiments of the present disclosure, a relay terminal is provided, including:

The second receiving module is configured to receive the first indication information sent by the first terminal; wherein the first indication information is used to indicate the first service that the first terminal expects to receive;

The second sending module is configured to send service data to the first terminal; the service data is data corresponding to the first service that the first terminal expects to receive.

According to a sixth aspect of the embodiment of the present disclosure, a network device is provided, including:

The third sending module is configured to send service data to the relay terminal; the service data is used by the relay terminal to forward data to the first terminal according to the first instruction information, and the first instruction information is used to instruct the The first service that the first terminal expects to receive.

According to a seventh aspect of the embodiment of the present disclosure, a communication device is provided, including:

processor;

Memory used to store instructions executable by the processor;

Wherein, the processor is configured to perform the steps of the communication method provided by the first aspect, the second aspect or the third aspect of the present disclosure.

According to an eighth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having computer program instructions stored thereon, and when the computer program instructions are executed by a processor, the first, second or third aspect of the present disclosure is implemented. The steps of the communication method provided.

According to a ninth aspect of the embodiments of the present disclosure, a communication system is provided, including:

A first terminal, the first terminal can execute the communication method provided by the first aspect of the present disclosure;

A relay terminal, which can perform the communication method provided by the second aspect of the present disclosure;

Network device, the network device can execute the communication method provided by the third aspect of the present disclosure.

The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the first terminal sends first indication information to the relay terminal and receives the service data sent by the relay terminal; the first indication information is used to indicate that the first terminal expects to receive The first service, the service data is the data corresponding to the first service that the first terminal expects to receive. In this way, the first terminal can receive the service data of the first service through the relay terminal, thereby supporting multiple services through the relay terminal.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit the present disclosure.

Description of the drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of a communication system according to an exemplary embodiment.

Figure 2 is a flow chart of a communication method according to an exemplary embodiment.

Figure 3 is a schematic diagram of a service data transmission method according to an exemplary embodiment.

Figure 4 is a flowchart of a communication method according to an exemplary embodiment.

Figure 5 is a flowchart of a communication method according to an exemplary embodiment.

Figure 6 is a flow chart of a communication method according to an exemplary embodiment.

Figure 7 is a flowchart of a communication method according to an exemplary embodiment.

Figure 8 is a flowchart of a communication method according to an exemplary embodiment.

Figure 9 is a flow chart of a communication method according to an exemplary embodiment.

Figure 10 is a flowchart of a communication method according to an exemplary embodiment.

Figure 11 is a flowchart of a communication method according to an exemplary embodiment.

Figure 12 is a flowchart of a communication method according to an exemplary embodiment.

Figure 13 is a flowchart of a communication method according to an exemplary embodiment.

Figure 14 is a block diagram of a first terminal according to an exemplary embodiment.

Figure 15 is a block diagram of a relay terminal according to an exemplary embodiment.

Figure 16 is a block diagram of a network device according to an exemplary embodiment.

Figure 17 is a block diagram of a communication device according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the disclosure as detailed in the appended claims.

The embodiments of this disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to specifically limit the scope of protection of this disclosure. If there is no contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution in which some steps are removed from a certain embodiment can also be used. It is implemented as an independent embodiment, and the order of each step in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, various embodiments can be arbitrarily combined, for example , some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with optional implementations of other embodiments.

In each embodiment of the present disclosure, if there is no special explanation or logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be used according to their inherent logical relationships. Combined to form new embodiments.

The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure.

In the description with reference to the drawings, the same reference numerals in different drawings may represent the same elements unless otherwise specified. Although operations or steps are described in a specific order in the embodiments of the present disclosure or in the drawings, this should not be construed as requiring that these operations or steps be performed in the specific order shown or in serial order, or that all of them are performed. actions or steps shown to obtain the desired results. In the embodiments of the present disclosure, if there is no contradiction, these operations or steps can be performed in any order; these operations or steps can also be performed in parallel; a part of these operations or steps can also be performed; or multiple implementations can be performed. The operations or steps in the examples or drawings can be combined in any way, and the embodiments of the present disclosure are not limited to this.

In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" refers to two or more than two, and other quantifiers are similar. “At least one item (item)”, “one item (item) or multiple items (items)” or similar expressions refer to any combination of these items (items), including single item (items) or plural items (items) ) any combination. For example, at least one item (item) can represent any number; for another example, one (item) or multiple items (items) among a, b, and c can represent: a, b, c, a-b, a-c, b-c, Or a-b-c, where a, b, c can be single or multiple. "And/or" is an association relationship that describes related objects. It means that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. , where A and B can be singular or plural. The character "/" indicates that the related objects are in an "or" relationship.

In the description of the embodiments of the present disclosure, the singular forms “a”, “an”, “an”, “the”, “the” and “the above” are used unless otherwise stated or the context clearly indicates otherwise. , "the aforementioned" and "this" may mean "one and only one", "one or more", "at least one", etc. For example, when articles (articles) such as "a", "an", and "the" in English are used in translation, the noun after the article can be understood as a singular expression or a plural expression. .

In the description of the embodiments of the present disclosure, "in one situation A, in another situation B", "in response to one situation A, in response to another situation B" and other description methods may include the following technical solutions according to the situation: A is executed independently of B, i.e., in some embodiments, A; B is executed independently of A, i.e., in some embodiments, B; A and B are selectively executed, i.e., in some embodiments, from A to B is selected for execution; both A and B are executed, that is, in some embodiments A and B. It is similar to the above when there are more branches such as A, B, C, etc.

In the description of the embodiments of the present disclosure, descriptions such as "A or B" may include the following technical solutions depending on the situation: in some embodiments A (executing A independently of B); in some embodiments B (executing A independently of A); B) is executed independently; in some embodiments A and B are selectively executed (A and B are selectively executed). It is similar to the above when there are more branches such as A, B, C, etc.

The prefixes such as "first" and "second" in the embodiments of this disclosure are only used to distinguish different description objects and do not limit the position, order, priority, quantity or content of the description objects. See the description of the context in the claims or embodiments, and the use of prefixes should not constitute unnecessary limitations. For example, if the description object is "field", then the ordinal word before "field" in "first field" and "second field" does not limit the position or order between "fields". "First" and "Second field" " does not limit whether the "fields" it modifies are in the same message, nor does it limit the order of the "first field" and "second field". For another example, if the description object is "level", then the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the number of description objects is not limited by ordinal numbers, and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. ; For another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

In the description of the embodiments of the present disclosure, "includes A", "includes A", "is used to indicate A", and "carries A" can be interpreted as directly carrying A, or as indirectly indicating A.

In the description of the embodiments of the present disclosure, "in response to...", "in response to determining...", "in the case of..." and "when..." unless there is no contradiction or characterization. , "when...", "if...", "if..." and other terms are interchangeable.

In the description of the embodiments of the present disclosure, “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, and “less than” are used without contradiction or characterization. Terms such as "less than", "higher than", "higher than or equal to", "not less than" and "above" can be interchanged. "Less than", "less than or equal to", "not greater than", "less than", Terms such as "less than or equal to", "no more than", "less than", "less than or equal to", "no higher than" and "below" may be used interchangeably.

In the description of the embodiments of the present disclosure, devices can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments, such as "device", "equipment", "equipment" (device)", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", The terms "entity" and "subject" are interchangeable.

In the description of the embodiments of the present disclosure, the names of messages or information exchanged between multiple devices are only used for illustrative purposes and are not used to limit the scope of these messages or information.

In addition, each element, each row, or each column in the table in the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any element, any row, and any column can also be implemented as an independent embodiment.

The following first introduces the implementation environment of the embodiment of the present disclosure.

The technical solutions of the embodiments of the present disclosure can be applied to various communication systems. The communication system may include one or more of the 4th Generation (4G) communication system, the 5th Generation (5G) communication system, and other future wireless communication systems (such as 6G). The communication system may also include a Public Land Mobile Network (PLMN) network, a Device-to-Device (D2D) communication system, a Machine to Machine (M2M) communication system, One or more of the Internet of Things (IoT) communication system, the Vehicle-to-Everything (V2X) communication system or other communication systems.

FIG. 1 is a schematic diagram of a communication system 100 according to an exemplary embodiment. As shown in FIG. 1 , the communication system 100 may include a terminal device 150 and a network device 160 . The communication system can be used to support 4G network access technology, such as Long Term Evolution (LTE) access technology, or 5G network access technology, such as New Radio Access Technology (New RAT), Or, other future wireless communication technologies. It should be noted that in this communication system, the number of network devices and terminal devices can be one or more. The number of network devices and terminal devices in the communication system shown in Figure 1 is only an example of adaptability. This disclosure is No restrictions.

The network equipment in Figure 1 can be used to support communication between end devices. For example, the network device may include an evolutionary Node B (eNB or eNodeB) in LTE; the network device may also include a next-generation base station (the next Generation Node B, gNB or gNodeB) in a 5G network; the network The equipment may also include NG-Radio Access Network (NG-RAN) equipment in the 5G network; the network equipment may also include base stations, At least one of the devices such as Broadband Network Gateway (BNG), aggregation switch or non-3GPP access equipment. Optionally, the network device in the embodiment of the present disclosure may include at least one of the following various forms of base stations, such as: macro base station, micro base station (also called a small station), relay station, access point, 5G base station or Future base stations, satellites, transmission points (Transmitting and Receiving Point, TRP), transmitting points (TP), mobile switching centers and device-to-device (D2D), machine-to-machine (Machine-to -Machine, M2M), Internet of Things (IoT), Vehicle-to-Everything (V2X), or other equipment that assumes base station functions in the communication system, etc., the embodiments of the present disclosure do not specifically limit this. For convenience of description, in the embodiments of the present disclosure, devices that provide wireless communication functions for terminal equipment are collectively referred to as network equipment, base stations or access network equipment.

In some embodiments, the above network equipment may include core network equipment and access network equipment, and the access network equipment may also be called a base station. Terminal equipment can communicate with core network equipment through access network equipment.

In some embodiments, "Access Network Device (AN Device)", "Radio Access Network Device (RAN Device)", "Base Station (BS)", "Wireless "Radio Base Station", "Fixed Station", "NODE", "Access Point", "Transmission Point (TP)", "Reception Point" Point, RP)", "Transmission/Reception Point (TRP)", "Panel", "Antenna Panel (Antenna Panel)", "Antenna Array (Antenna Array)", "Cell" ”, “Macro Cell”, “Small Cell”, “Femto Cell”, “Pico Cell”, “Sector”, “Cell Group” (Cell Group)", "serving cell", "carrier", "component carrier (ComponentCarrier)", "bandwidth part (Bandwidth Part, BWP)" and other terms can be replaced with each other.

The terminal device in Figure 1 may be an electronic device that provides voice or data connectivity. For example, the terminal device may also be called User Equipment (UE), Subscriber Unit (Subscriber Unit), or Mobile Station. ), Station, Terminal, etc. For example, the terminal device may include a smartphone, a smart wearable device, a smart speaker, a smart tablet, a wireless modem (modem), a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital assistant (Personal Digital Assistant, PDA). ), customer terminal equipment (Customer Premise Equipment, CPE), etc. With the development of wireless communication technology, devices that can access the communication system, can communicate with the network equipment of the communication system, can communicate with other objects through the communication system, or can communicate directly between two or more devices The devices can all be terminal devices in the embodiments of the present disclosure; for example, terminals and cars in smart transportation, household equipment in smart homes, power meter reading instruments, voltage monitoring instruments, environmental monitoring instruments, and intelligent safety networks in smart grids. Video monitoring instruments, cash registers, etc. In embodiments of the present disclosure, the terminal device can communicate with the network device. Communication between multiple terminal devices is also possible. The terminal device may be static or fixed, or may be mobile, which is not limited in the embodiments of the present disclosure.

In some embodiments, "Terminal (Terminal)", "Terminal Device (Terminal Device)", "User Equipment (Ue)", "User Terminal (User Terminal)", "Mobile Station (MS) )", "Mobile Terminal (MT)", "Subscriber Station", "MobileUnit", "Subscriber Unit (Subscriber Unit)", "Wireless Unit (Wireless Unit)", " "RemoteUnit", "Mobile Device", "Wireless Device", "Wireless Communication Device", "Remote Device", "Mobile Subscriber Station" MobileSubscriber Station", "Access Terminal", "Mobile Terminal", "Wireless Terminal", "Remote Terminal", "Handset", Terms such as "User Agent", "Mobile Client" and "Client" can be interchanged.

In some embodiments, access network equipment, core network equipment, or network equipment may be replaced by terminals. For example, the communication between access network equipment, core network equipment, or network equipment and terminals is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-networking (vehicle- to-everything, V2X, etc.) structures, various embodiments of the present disclosure can also be applied. In this case, the terminal may be configured to have all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" may also be replaced with terms corresponding to inter-terminal communication (for example, "sidelink or direct connection (side)"). For example, uplink channels, downlink channels, etc. can be replaced by sidelink channels or direct channels, and uplinks, downlinks, etc. can be replaced by sidelinks or direct links.

In some embodiments of the present disclosure, as shown in FIG. 1 , the terminal device 150 may include a first terminal 151 and a relay terminal 153. Among them: the relay terminal 153 can be used to provide a relay function for the first terminal to communicate with the network device. In this scenario, the first terminal 151 can be called a remote terminal or a remote UE (remote UE), providing The relay terminal 153 with the relay function may also be called a relay UE (relay UE).

In some embodiments, the relay terminal 153 and the network device 160 may communicate through a first wireless link. The first wireless link is an indirect link. The first wireless link may include a relay terminal. Uplinks and/or downlinks to and from network devices. For example, the first wireless link may include one or more wireless channels, for example, PRACH (Physical Random Access Channel, physical random access channel), PUCCH (Physical Uplink Control Channel, physical uplink control channel), PUSCH (Physical Uplink Control Channel) One or more channels such as Shared Channel (Physical Uplink Shared Channel), PDSCH (Physical Downlink Shared Channel), and PDCCH (Physical Downlink Control Channel). The interface for communication between the relay terminal 153 and the network device 160 may be called a first wireless interface, and the first wireless interface may be an indirect link interface. For example, the first wireless interface may be a UU interface.

In some embodiments, the first terminal 151 and the relay terminal 153 may communicate through a direct link Sidelink. For example, the direct link may include one or more direct link channels, such as a Physical Sidelink Broadcast Channel (PSBCH), a Physical Sidelink Control Channel (PSCCH) ), physical sidelink shared channel (Physical Sidelink SharedChannel, PSSCH) and other channels. The interface for communication between the first terminal 151 and the relay terminal 153 may be called a PC5 interface or a direct communication interface. The direct link communication method between the first terminal 151 and the relay terminal 153 may include any one or more of unicast, multicast or broadcast.

In some embodiments, the first terminal 151 and the network device 160 may communicate directly through the first wireless link; in other embodiments, the communication between the first terminal 151 and the network device 160 may also occur through the Relay terminal implementation; in other embodiments, the first terminal 151 and the network device 160 can communicate directly through the first wireless link or through a relay terminal.

It should be noted that in Figure 1, the above-mentioned terminal device 150 may also include a second terminal, a third terminal or more terminals; the above-mentioned first terminal may be one or more, and the relay terminal may also be one or more This disclosure does not limit this.

In some embodiments of the present disclosure, the terminal device may receive the multicast broadcast service MBS sent by the network device. For example, the network device may send a multicast broadcast service broadcast configuration (MBSBroadcastConfiguration) message on the multicast broadcast service control channel (MBS Control Channel, MCCH), which carries a multicast broadcast service information list provided by the network device (for example, the current cell) (MBSSessionInfoList), DRX configuration list (drx-ConfigPTM-List) and neighbor cell list (MBSNeighbourCellList) that provides multicast broadcast services.

The multicast broadcast service list may carry one or more multicast broadcast service information. One multicast broadcast service information may include a Temporary Mobile Group Identity (TMGI), a broadcast RNTI (Group-Radio Network Temporary Identity). , G-RNTI), broadcast service radio bearer configuration, neighbor cell list supporting the multicast broadcast service, or DRX configuration of the multicast broadcast service and other information. TMGI can be used to identify multicast broadcast services, and broadcast service radio bearer configuration can be used to indicate PDCP and RLC configurations. The DRX configuration of the multicast broadcast service may be an index identifier, and the index identifier may be used to determine a DRX configuration in the drx-ConfigPTM-List.

If the terminal device is interested in the multicast broadcast service indicated in the multicast broadcast service information list, the wireless bearer can be established according to the corresponding broadcast service wireless bearer configuration. For example, the corresponding PDCP entity and RLC entity can be established to receive the packets sent by the network device. multicast broadcast service.

In the related art, if the first terminal communicates with the network device through the relay terminal, the first terminal cannot receive the MBS sent by the network device. Therefore, how to implement multicast broadcast services based on relay terminals has become an urgent problem to be solved.

Figure 2 is a flow chart of a communication method according to an exemplary embodiment. The method can be performed by the communication system described above. As shown in Figure 2, the method may include:

S201. The network device sends service configuration information to the relay terminal.

The service configuration information may include configuration information of at least one first service. For example, the service configuration information may include configuration information of one first service, or may include configuration information of two or more first services. It should be noted that different first services may correspond to the same service configuration information, or may correspond to different service configuration information.

In this step, the network device can send the service configuration information to the relay terminal through a wireless link (indirect link, such as a UU port). For example, the network device may send a first message to the relay terminal through a wireless link, and the first message may include the service configuration information. The first message may include a Radio Resource Control (RRC) message, a Medium Access Control Control Element (MAC CE), a Downlink Control Information (DCI), or other messages sent by the network device to the terminal device. at least one of them.

In some embodiments, the network device may send the service configuration information to the relay terminal through a multicast broadcast service broadcast configuration (MBSBroadcastConfiguration) or an RRC reconfiguration message.

In some embodiments, the first service may be a multicast broadcast service MBS (Multicast Broadcast Service). It should be noted that the MBS may include multicast services and/or broadcast services.

Optionally, a first service may correspond to a service channel or a service program of MBS. For example, the service configuration information may include configuration information of multiple first services, and the multiple first services respectively correspond to first movie programs. , the second movie program, the first TV series program, the first sports channel and other programs or channels.

In other embodiments, the first service may also be an emergency service (Emergency Service), or other services that need to be sent to the first terminal through the relay terminal.

In some embodiments, the above-mentioned service configuration information may include at least one of the following configuration information corresponding to the first service:

Radio bearer configuration information: The radio bearer configuration information can be used to establish a radio bearer, and the radio bearer can be a Packet Data Convergence Protocol (PDCP) entity. For example, both the network device and the first terminal can establish a radio bearer (eg, PDCP entity) based on the radio bearer configuration information.

Radio Link Control RLC (Radio Link Control) configuration information: This RLC configuration information can be used to establish RLC entities. For example, both the network device and the relay terminal can establish an RLC entity based on the radio bearer configuration information.

Direct link wireless link control SL-RLC (Sidelink-Radio Link Control) configuration information: This SL-RLC configuration information can be used to establish an SL-RLC entity. For example, both the relay terminal and the first terminal can establish an SL-RLC entity based on the SL-RLC configuration information.

S202. The relay terminal sends service configuration information to the first terminal.

In this step, the relay terminal may send the service configuration information to the first terminal through a direct link.

For example, the relay terminal may send a second message to the first terminal, and the second message may include the service configuration information. The second message may include a Sidelink RRC (Sidelink Radio Resource Control) message, a Sidelink MAC CE (Sidelink Medium Access Control Element), and a direct link downlink control information. At least one of Sidelink DCI (Sidelink Downlink Control Information) or other messages corresponding to the direct link.

In some embodiments, the relay terminal may send a multicast broadcast service broadcast configuration (MBSBroadcastConfiguration) or an RRC reconfiguration message to the first terminal through a direct link, and the multicast broadcast service broadcast configuration or RRC reconfiguration message carries The business configuration information.

In some embodiments, the relay terminal may receive the service configuration information sent by the network device and send the service configuration information to the first terminal.

For example, the relay terminal may forward the service configuration information to the first terminal in response to receiving the service configuration information sent by the network device.

For another example, the relay terminal may store the service configuration information received from the network device, and when establishing a direct link with the first terminal or receiving service request information from the first terminal, send the service configuration information to the first terminal. .

In this way, the relay terminal can flexibly send service configuration information to the first terminal.

The service configuration information sent by the relay terminal to the first terminal and the service configuration information received by the relay terminal from the network device may be the same or different.

In some embodiments, the relay terminal may directly forward the service configuration information received from the network device to the first terminal.

For example, the service configuration information sent by the network device to the relay terminal may include radio bearer configuration information, RLC configuration information and SL-RLC configuration information corresponding to the first service; the service configuration information sent by the relay terminal to the first terminal may also include Radio bearer configuration information, RLC configuration information and SL-RLC configuration information corresponding to the first service.

In this way, the relay terminal can directly forward the service configuration information without additional processing of the service configuration information, thereby reducing the load and delay caused by information processing.

In other embodiments, the relay terminal may process the received service configuration information (for example, add, delete, or modify some fields), and forward the processed service configuration information to the first terminal.

For example, the service configuration information sent by the network device to the relay terminal may include the radio bearer configuration information and RLC configuration information corresponding to the first service, but does not include SL-RLC configuration information; the service configuration information sent by the relay terminal to the first terminal It may include radio bearer configuration information and SL-RLC configuration information corresponding to the first service, but does not include RLC configuration information.

For another example, the service configuration information sent by the network device to the relay terminal may include radio bearer configuration information, RLC configuration information and SL-RLC configuration information corresponding to the first service; the service configuration information sent by the relay terminal to the first terminal may include The radio bearer configuration information and SL-RLC configuration information corresponding to the first service do not include RLC configuration information.

In this way, the relay terminal can forward only the service configuration information required by the first terminal to the first terminal, thereby reducing the amount of data transmitted on the direct link and improving the communication efficiency of the direct link.

In some embodiments, the service configuration information received by the relay terminal may include radio bearer configuration information corresponding to the first service and direct link radio link control SL-RLC configuration information. The relay terminal can establish an SL-RLC entity corresponding to the first service according to the service configuration information (for example, SL-RLC configuration information); the relay terminal can send service data to the first terminal through the SL-RLC entity.

In other embodiments, the service configuration information received by the relay terminal may include radio bearer configuration information corresponding to the first service, direct link radio link control SL-RLC configuration information and radio link control RLC configuration information. The relay terminal can establish an RLC entity corresponding to the first service according to the RLC configuration information; establish an SL-RLC entity corresponding to the first service according to the SL-RLC configuration information; in this way, the relay terminal can receive the RLC entity sent by the network device through the RLC entity. The service data is sent to the first terminal through the SL-RLC entity.

S203. The first terminal determines the first service it expects to receive based on the service configuration information.

In some embodiments, the first terminal may receive the service configuration information sent by the relay terminal, and determine the first service that the first terminal expects to receive among at least one first service indicated by the service configuration information. The service configuration information may include configuration information of at least one first service.

In one implementation, the first terminal can display the relevant information of the first service (for example, configure a new service) to the user according to the service configuration information, and in response to the user's input instruction, determine the first service that the first terminal expects to receive. .

It should be noted that in the embodiments of the present disclosure, "expected to receive" and "interested" can be replaced with each other. For example, the first service that the first terminal desires to receive may also be called the first service that the first terminal is interested in.

In some embodiments, the service configuration information received by the first terminal may include radio bearer configuration information and SL-RLC configuration information corresponding to the first service.

Optionally, the first terminal may establish a radio bearer and an SL-RLC entity corresponding to the first service according to the service configuration information. For example, a radio bearer (such as a PDCP entity) can be established according to the radio bearer configuration information, and an SL-RLC entity can be established according to the SL-RLC configuration information. In this way, the first terminal can receive the service data sent by the relay terminal through the SL-RLC entity and the radio bearer, and the service data can be data corresponding to the first service that the first terminal expects to receive.

It should be noted that the first terminal can establish the radio bearer and SL-RLC entity corresponding to the first service that the first terminal expects to receive according to the service configuration information; the first terminal can also establish all the first services included in the service configuration information. The radio bearer and SL-RLC entity corresponding to the service.

S204. The first terminal sends the first instruction information to the relay terminal.

The first indication information may be used to indicate the first service that the first terminal expects to receive.

In some embodiments, the first terminal may send the first indication information to the relay terminal through a direct link. For example, the first terminal may send a third message to the relay terminal through the instruction link, and the third message may include the first indication information. The third message may include at least one of the Sidelink RRC message, Sidelink MAC CE, Sidelink DCI, or other messages corresponding to the direct link.

It should be noted that the first indication information may also be called first request information, and may be used to request or instruct the relay terminal to send service data of the first service.

In some embodiments, the first indication information may include a first service identifier, and the first service identifier may be an identifier corresponding to the first service that the first terminal expects to receive. It should be noted that the first indication information may include one or more first service identifiers. In this way, the first terminal can explicitly and directly indicate the first service that the first terminal expects to receive.

In other embodiments, the first indication information may include a second service identifier, and the second service identifier may be an identifier of a first service that the first terminal does not expect to receive. In addition to the second service identifier, other first services They are all MBSs that the first terminal expects to receive or is interested in. In this way, the first terminal can implicitly indicate the first service it expects to receive; the relay terminal can send service data of other first services except the first service indicated by the second service identifier to the first terminal.

In one implementation, the first service may be MBS, and the first service identifier or the second service identifier may be a Temporary Mobile Group Identity (TMGI) or other identifier used to indicate the first service.

In some embodiments, after receiving the first indication information, the relay terminal may send first indication response information to the first terminal, and the first indication response information may be used to instruct the first terminal to receive the first service. Similarly, the first terminal may receive the first indication response information.

It should be noted that the above service configuration information may also include a first service identifier corresponding to the first service.

In some embodiments, the relay terminal may establish the radio bearer and SL-RLC entity corresponding to the first service that the first terminal expects to receive according to the service configuration information before, after or at the same time as sending the first indication information.

In other embodiments, when the relay terminal sends the first indication information and receives the first indication response information, the relay terminal may establish the radio bearer corresponding to the first service that the first terminal expects to receive according to the service configuration information. SL-RLC entity.

S205. The relay terminal sends the first auxiliary information to the network device.

The first auxiliary information may include a first terminal identifier and/or a first service identifier, where the first terminal identifier is an identifier of the first terminal, and the first service identifier is a service identifier of the MBS that the first terminal desires to receive.

The first terminal identification may include the direct link sidelink identification of the first terminal, the radio network temporary identification RNTI (Radio Network Temporary Identity), C-RNTI, 5G-S-TMSI, 4G-S-TMSI or other An identifier that uniquely identifies the first terminal.

In an implementation manner, the relay terminal may obtain the first service identifier from the received first indication information.

In an implementation manner, the first terminal may send the first terminal identification to the relay terminal, and the relay terminal may also obtain the first terminal identification from the message or information sent by the first terminal. For example, the first terminal may send the first terminal identification to the relay terminal through first indication information or other information or other messages.

Optionally, the first auxiliary information may also include a relay terminal identifier corresponding to the relay terminal.

In some embodiments, the relay terminal may send the first auxiliary information to the network device after receiving the first indication information sent by the first terminal.

Similarly, the network device may receive the first auxiliary information sent by the relay terminal.

In an implementation manner, the network device may control the first service according to the first auxiliary information. For example, after receiving the first auxiliary information, the network device may record the first terminal identifier and the first service identifier, and may notify the first terminal when releasing or updating the first service corresponding to the first service identifier. For another example, the network device may obtain the authority of the first terminal according to the first terminal identifier, and determine whether the first terminal can receive the first service corresponding to the first service identifier, so as to determine whether the first terminal can be provided with the first service. One business.

S206. The network device sends service data to the relay terminal.

The service data may be data corresponding to the first service that the first terminal expects to receive.

In some embodiments, the service data may be used by the relay terminal to forward data to the first terminal according to the first indication information, and the first indication information is used to indicate the first service that the first terminal expects to receive.

S207. The relay terminal sends service data to the first terminal.

In some embodiments, the relay terminal may receive the first indication information sent by the first terminal and send service data to the first terminal. The service data may be data corresponding to the first service that the first terminal expects to receive.

For example, the relay terminal may send service data to the first terminal in response to receiving the first indication information sent by the first terminal.

For another example, the relay terminal may forward the service data received from the network device to the first terminal after receiving the first indication information sent by the first terminal.

In some embodiments, the relay terminal may determine the first wireless network temporary identity RNTI according to the first indication information, and receive the service data sent by the network device according to the first RNTI. Wherein, the first RNTI is an RNTI corresponding to the first service that the first terminal expects to receive.

For example, the relay terminal may monitor the control channel corresponding to the RNTI sent by the network device in order to receive the service data corresponding to the first service. In one implementation, the control channel may be a PDCCH, and the RNTI may be a group RNTI (G-RNTI).

In an implementation manner, the relay terminal may also receive the service identifier correspondence relationship sent by the network device, and the service identifier correspondence relationship may include the correspondence relationship between the first service identifier and the RNTI. The service identifier correspondence relationship can be carried through any message, for example, it can be carried through a multicast broadcast service broadcast configuration or RRC reconfiguration message. In this way, the relay terminal receives the first service identifier in the first indication information and can determine the corresponding RNTI according to the first service identifier.

S208. The first terminal receives service data.

In some embodiments, the relay terminal may send service data to the first terminal through a direct link, and the direct link may be a link between the first terminal and the relay terminal. Similarly, the first terminal can also receive the service data sent by the relay terminal through the direct link.

It should be noted that the first terminal can receive the service data in any state. For example, the first terminal may be in a connected state, an idle state or an inactive state.

In some embodiments, when the first service is a multicast broadcast service MBS, the first terminal can display corresponding MBS information according to the service data, for example, play video programs, etc.

In this way, the first terminal can receive the service data of the first service through the relay terminal.

S209. The first terminal sends the second instruction information to the relay terminal.

The second indication information may be used to indicate the first service that the first terminal no longer wishes to receive.

It should also be noted that in the embodiments of the present disclosure, "no longer expect to receive", "do not expect to receive", "expect to stop receiving", "no longer interested", and "not interested" can be interchanged with each other. replace. For example, the first service that the first terminal no longer wishes to receive may also be called the first service that the first terminal is not interested in (not interested), or the first service that the first terminal is no longer interested in, or the first service that the first terminal is no longer interested in. A terminal does not wish to receive the first traffic.

For example, if the first terminal no longer desires to receive the first service, it may send the second indication information to the relay terminal.

For another example, if the first terminal no longer desires to receive the first service and the first service has been previously sent to the relay terminal through the first indication information, the second indication information may be sent to the relay terminal.

It should be noted that the second indication information and the first indication information may be the same or different.

In some embodiments, the second indication information may include a second service identifier, and the second service identifier may be an identifier of the first service that the first terminal no longer wishes to receive.

In this way, the first terminal may carry in the second indication information the identification of the first service that it no longer wishes to receive.

In other embodiments, the second indication information includes a third service identifier, and the third service identifier may be an identifier of the first service that the first terminal currently expects to receive, in addition to the first service corresponding to the third service identifier. The other first services are all first services that the first terminal no longer expects to receive.

In this way, the first terminal may carry the identifier of the first service that is expected to be received in the second indication information, and the second indication information may not carry the identifier of the first service that is no longer expected to be received.

S210. The relay terminal releases the first service that the first terminal no longer expects to receive according to the second instruction information.

In some embodiments, the relay terminal may determine the second service identifier according to the second indication information, and release the first service corresponding to the second service identifier. The second service identifier may be the first service identifier that the first terminal no longer expects to receive. Business identity.

In some embodiments, the relay terminal may release the first SL-RLC entity according to the second indication information. The first SL-RLC entity is the SL-RCL entity corresponding to the first service that the first terminal no longer expects to receive.

In other embodiments, the relay terminal may also release the first RLC entity, which is the RCL entity corresponding to the first service that the first terminal no longer expects to receive.

It should be noted that when there are multiple first terminals connected to the relay terminal, if all the first terminals no longer expect to receive the first service corresponding to the second service identifier, the relay terminal can release the first service. Services, for example, release the RLC entity and SL-RLC entity corresponding to the first service; if there is at least one first terminal that still expects to receive the first service corresponding to the second service identifier, the relay terminal does not release the first service , for example, the relay terminal does not release the RLC entity and SL-RLC entity corresponding to the first service, or the relay terminal does not release the RLC entity corresponding to the first service, but may release the RLC entity that no longer expects to receive the first service. The SL-RLC entity corresponding to the second terminal.

In some embodiments, when the relay terminal releases the first service, it may notify the network device and/or the first terminal.

Using the above method, the first terminal can receive the service data of the first service through the relay terminal, thereby realizing a specific service (such as MBS) in a direct link scenario.

Figure 3 is a schematic diagram of a service data transmission method according to an exemplary embodiment. As shown in Figure 3, the network device can send the service data of the first service through the PDCP entity and the RLC entity; the relay terminal receives the service data through the RLC entity and sends the service data through the SL-RLC entity; the first terminal can The service data is received through the SL-RLC entity and PDCP entity. In this way, the relay terminal can forward the service data through the RLC entity and the SL-RLC entity without the PDCP entity.

It should be noted that the PDCP entity may also be called a UU-PDCP entity, the RLC entity may also be called a UU-RLC entity, and the SL-RLC entity may also be called a PC5-RLC entity.

In some embodiments, the network device may also include a media access control MAC (Medium Access Control) entity and a physical layer PHY (Physical) entity. The first terminal may also include a direct link medium access control SL-MAC entity and a direct link media access control SL-MAC entity. Connected to the link physical layer SL-PHY entity, similarly, the relay terminal may also include a MAC entity, PHY entity, SL-MAC entity and SL-PHY entity.

It should be noted that for relevant descriptions of PDCP, RLC, MAC and PHY, please refer to the description in the 3GPP protocol and will not be repeated here.

Figure 4 is a flowchart of a communication method according to an exemplary embodiment. The method may be executed by the first terminal in the above communication system. As shown in Figure 4, the method may include:

S401. The first terminal sends first instruction information to the relay terminal.

The first indication information may be used to indicate the first service that the first terminal expects to receive.

It should be noted that, regarding the specific implementation manner of the first indication information and the first service, reference may be made to the specific description in the embodiment shown in FIG. 2 of the present disclosure, which will not be described again here.

S402. The first terminal receives the service data sent by the relay terminal.

The service data may be data corresponding to the first service that the first terminal expects to receive.

In an implementation manner, the first terminal may send the first indication information to the relay terminal through a direct link. Similarly, the first terminal can also receive the service data sent by the relay terminal through the direct link. The direct link may be a link between the first terminal and the relay terminal.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

Using the above method, the first terminal sends first indication information to the relay terminal, and receives the service data sent by the relay terminal; the first indication information is used to indicate the first service that the first terminal expects to receive, and the service data is the first service. Data corresponding to the first service that a terminal expects to receive. In this way, the first terminal can receive the service data of the first service through the relay terminal, thereby supporting multiple services through the relay terminal.

Figure 5 is a flowchart of a communication method according to an exemplary embodiment. The method may be executed by the first terminal in the above communication system. As shown in Figure 5, the method may include:

S501. The first terminal receives the service configuration information sent by the relay terminal.

The service configuration information includes configuration information of at least one first service.

It should be noted that, regarding the specific implementation manner of the service configuration information, reference may be made to the specific description in the embodiment shown in FIG. 2 of the present disclosure, which will not be described again here.

S502. The first terminal determines the first service that the first terminal expects to receive from at least one first service indicated by the service configuration information.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

In some embodiments of the present disclosure, after determining the first service that it desires to receive, the first terminal may receive the service data of the first service based on the steps of the embodiment shown in FIG. 4 .

In some embodiments of the present disclosure, the first terminal can establish a radio bearer and SL-RLC entity corresponding to the first service according to the received service configuration information, and receive the radio bearer and SL-RLC entity sent by the relay terminal through the radio bearer and SL-RLC entity. business data.

In this way, the first terminal can determine the first service it desires to receive based on the received service configuration information, and can request the first service from the relay terminal through the first indication information, so that it can receive the service data of the first service.

Figure 6 is a flow chart of a communication method according to an exemplary embodiment. The method may be executed by the first terminal in the above communication system. As shown in Figure 6, the method may include:

S601. The first terminal sends second instruction information to the relay terminal.

Wherein, the second indication information is used to indicate the first service that the first terminal no longer wishes to receive.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

In this way, the first terminal can indicate to the relay terminal the first service that it no longer expects to receive, so as to reduce the amount of data transmitted on the direct link and reduce the network load.

In some embodiments, the first terminal may independently perform the steps of the embodiment shown in FIG. 4, FIG. 5 or FIG. 6.

In other embodiments, the first terminal can perform the steps of the embodiments shown in Figure 4, Figure 5 and Figure 6 in any order and combination. For example, the first terminal may execute the steps of the embodiment shown in FIG. 6 after executing the steps of the embodiment shown in FIG. 4; the first terminal may also execute the steps of the embodiment shown in FIG. 5 after executing the steps of the embodiment shown in FIG. The steps of the embodiment shown in Figure 6; the first terminal can also perform the steps of the embodiment shown in Figure 5, Figure 4 and Figure 6 in sequence; the first terminal can also perform the steps of the embodiment shown in Figure 4 and Figure 6 in a loop; This disclosure does not limit this.

In this way, the first terminal can receive the service data of the first service by flexibly combining the above steps.

Figure 7 is a flowchart of a communication method according to an exemplary embodiment. This method can be performed by a relay terminal in the above communication system. As shown in Figure 7, the method may include:

S701. The relay terminal receives the first instruction information sent by the first terminal.

The first indication information may be used to indicate the first service that the first terminal expects to receive.

S702. The relay terminal sends service data to the first terminal.

The service data may be data corresponding to the first service that the first terminal expects to receive.

For example, the relay terminal may respond to the first indication information and send service data to the first terminal.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

Using the above method, the relay terminal receives the first indication information sent by the first terminal and sends service data to the first terminal; the first indication information is used to indicate the first service that the first terminal expects to receive, and the service data is the first service. Data corresponding to the first service that a terminal expects to receive. In this way, the relay terminal can transmit the service data of the first service to the first terminal, thereby supporting the implementation of multiple services.

Figure 8 is a flowchart of a communication method according to an exemplary embodiment. This method can be performed by a relay terminal in the above communication system. As shown in Figure 8, the method may include:

S801. The relay terminal receives the service configuration information sent by the network device.

The service configuration information may include configuration information of at least one first service.

It should be noted that, regarding the service configuration information received by the relay terminal and the actions performed by the relay terminal based on the service configuration information, reference may be made to the description in the embodiment shown in FIG. 2 of the present disclosure, which will not be described again here.

S802. The relay terminal sends service configuration information to the first terminal.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

In this way, the relay terminal can forward the service configuration information to the first terminal.

In some embodiments, the relay terminal can establish an RLC entity corresponding to the first service according to the received service configuration information, and receive service data sent by the network device through the RLC entity.

In other embodiments, the relay terminal may also establish an SL-RLC entity corresponding to the first service based on the received service configuration information, and send service data to the first terminal through the SL-RLC entity.

In some embodiments, the relay terminal may determine the first wireless network temporary identity RNTI according to the first indication information, and receive service data sent by the network device according to the first RNTI. Wherein, the first RNTI is an RNTI corresponding to the first service that the first terminal expects to receive.

It should also be noted that for the specific implementation of the above steps in this embodiment, reference can also be made to the description in the embodiment shown in FIG. 2 of the present disclosure, which will not be described again here.

In this way, the relay terminal can receive the service data sent by the network device and forward the service data to the first terminal.

Figure 9 is a flow chart of a communication method according to an exemplary embodiment. This method can be performed by a relay terminal in the above communication system. As shown in Figure 9, the method may include:

S901. The relay terminal receives the second instruction information sent by the first terminal.

The second indication information is used to indicate the first service that the first terminal no longer wishes to receive.

S902: The relay terminal releases the first service that the first terminal no longer expects to receive according to the second instruction information.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, you can also refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

In this way, the relay terminal can release the first service that the first terminal no longer expects to receive, so as to reduce the amount of data transmitted on the direct link and reduce the network load.

Figure 10 is a flowchart of a communication method according to an exemplary embodiment. This method can be performed by a relay terminal in the above communication system. As shown in Figure 9, the method may include:

S1001. The relay terminal sends the first auxiliary information to the network device.

The first auxiliary information may include a first terminal identifier and/or a first service identifier. The first terminal identifier may be an identifier of the first terminal. The first service identifier may be a service identifier of the MBS that the first terminal desires to receive. .

For example, the relay terminal may send the first auxiliary information to the network device after receiving the first indication information sent by the first terminal.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

In this way, the relay terminal can send the first auxiliary information to the network device, so that the network device controls the first service based on the first auxiliary information.

In some embodiments, the relay terminal may independently perform the steps of the embodiments shown in FIG. 7, FIG. 8, FIG. 9 or FIG. 10.

In other embodiments, the relay terminal may perform the steps of the embodiments shown in FIG. 7, FIG. 8, FIG. 9, and FIG. 10 in any order and combination. For example, the relay terminal may execute the steps of the embodiment shown in FIG. 9 after executing the steps of the embodiment shown in FIG. 7; the relay terminal may also execute the steps of the embodiment shown in FIG. 8, and then execute the steps of the embodiment shown in FIG. The steps of the embodiment shown in Figure 9; the relay terminal can also perform the steps of the embodiment shown in Figures 8, 7, 10 and 9 in sequence; the relay terminal can also perform the embodiments shown in Figures 7 and 9 in a loop. steps; this disclosure does not limit this.

In this way, the relay terminal can forward the service data of the first service to the first terminal by flexibly combining the above steps.

Figure 11 is a flowchart of a communication method according to an exemplary embodiment. The method can be performed by the network device in the above communication system. As shown in Figure 11, the method may include:

S1101. The network device sends service data to the relay terminal.

The service data may be used by the relay terminal to forward data to the first terminal according to the first indication information, and the first indication information may be used to indicate the first service that the first terminal expects to receive.

In an implementation manner, the first service may be a multicast broadcast service MBS.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

Using the above method, the network device sends service data to the relay terminal; wherein the service data can be used by the relay terminal to forward data to the first terminal according to the first indication information, and the first indication information can be used to indicate that the first terminal expects First business received.

Figure 12 is a flowchart of a communication method according to an exemplary embodiment. The method can be performed by the network device in the above communication system. As shown in Figure 12, the method may include:

S1201. The network device sends service configuration information to the relay terminal.

The service configuration information may include configuration information of at least one first service.

For example, the service configuration information includes at least one of radio bearer configuration information corresponding to the first service, direct link radio link control SL-RLC configuration information, and radio link control RLC configuration information.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

In this way, the network device can configure the first service through the service configuration information, so as to complete the transmission of the first service.

Figure 13 is a flowchart of a communication method according to an exemplary embodiment. The method can be performed by the network device in the above communication system. As shown in Figure 13, the method may include:

S1301. The network device receives the first auxiliary information sent by the relay terminal.

The first auxiliary information may include a first terminal identifier and/or a first service identifier. The first terminal identifier may be an identifier of the first terminal. The first service identifier may be a service identifier of the MBS that the first terminal desires to receive. .

In an implementation manner, the network device may control the first service according to the first auxiliary information. For example, after receiving the first auxiliary information, the network device may record the first terminal identifier and the first service identifier, and may notify the first terminal when releasing or updating the first service corresponding to the first service identifier. For another example, the network device may obtain the authority of the first terminal according to the first terminal identifier, and determine whether the first terminal can receive the first service corresponding to the first service identifier, so as to determine whether the first terminal can be provided with the first service. One business.

It should also be noted that, without conflict, this embodiment can be combined with the foregoing embodiments or implementations of the present disclosure and various optional solutions. For the specific implementation of the above steps in this embodiment, please refer to The description of the embodiment shown in FIG. 2 of the present disclosure will not be repeated here.

In this way, the network device can control the first service according to the first auxiliary information, thereby improving the data transmission reliability of the first service.

It should be noted that the network device can perform the steps of the embodiment shown in Figure 11, Figure 12 or Figure 13 individually, and the network device can also perform the steps of the embodiment shown in Figure 11, Figure 12 and Figure 13 in any order and combination. This disclosure does not limit this.

In some embodiments of the present disclosure, a communication method is provided. The communication method can be performed by the first terminal. The method can include at least one of the following embodiments:

Embodiment 1: the first terminal sends a first service identifier to the relay terminal, and receives the first service sent by the relay terminal.

In an implementation manner, the first service identifier may be TMGI. The first service may be a multicast or broadcast service. The first terminal may be in a connected state, an idle state or an inactive state.

In an implementation manner, the first terminal may receive the first service sent by the relay terminal on the direct link sidelink.

In an implementation manner, the first terminal may send one or more first service identifiers to the relay terminal.

In an implementation manner, the first terminal may send the first service identifier to the relay terminal through first indication information.

Embodiment 2. Based on Embodiment 1, the first terminal can receive the service configuration information forwarded by the relay terminal, determine that it is interested in the first service, and send the corresponding first service identifier to the relay terminal.

In an implementation manner, the service configuration information may be indicated through a multicast broadcast service broadcast configuration (MBSBroadcastConfiguration) or indicated through an RRC reconfiguration message.

Embodiment 3, based on Embodiment 2, the service configuration information may carry the first service radio bearer configuration, the SL-RLC configuration, and the corresponding relationship between the first service radio bearer and the SL-RLC.

The first service radio bearer configuration may be a PDCP configuration.

Embodiment 4, based on any one of Embodiments 1 to 3, the first terminal can establish the first service wireless bearer and the corresponding SL-RLC according to the service configuration information, and the data of the first service wireless bearer passes through the corresponding SL-RLC. RLC transmission.

The first service radio bearer may be a PDCP entity.

Embodiment 5: Based on any one of Embodiments 1 to 4, if the first terminal is not interested in the first service corresponding to the first service identifier that has been sent to the relay terminal, then the second indication information is sent to the relay terminal. .

In one implementation, the second indication information may carry an uninteresting first service identifier.

In an implementation manner, the second indication information may be the first service identifier of current interest, which does not carry the first service identifier of no interest.

In some embodiments of the present disclosure, a communication method is also provided. The communication method can be performed by a relay terminal. The method can include at least one of the following embodiments:

Embodiment 11: The relay terminal receives the first service identifier sent by the first terminal, determines the first service, and forwards the first service to the first terminal.

In an implementation manner, the relay terminal may send the first service to the first terminal on the direct link sidelink.

Embodiment 12, based on Embodiment 11, the relay terminal can establish the SL-RLC and RLC corresponding to the first service according to the service configuration information, and the data of the first service is transmitted through the corresponding RLC and SL-RLC.

Embodiment 13: Based on Embodiment 12, the relay terminal may receive the service configuration information sent by the base station, which carries the SL-RLC configuration and RLC configuration corresponding to the first service.

Embodiment 14, based on any one of Embodiments 11 to 13, the relay terminal may determine the RNTI corresponding to the first service identifier, monitor the PDCCH corresponding to the RNTI sent by the base station, and obtain the first service.

In an implementation manner, the corresponding relationship between the first service identifier and the G-RNTI is indicated in the multicast broadcast service broadcast configuration (MBSBroadcastConfiguration).

In one implementation, the RNTI may be a G-RNTI.

Embodiment 15, based on any one of Embodiments 11 to 14, the relay terminal may send first auxiliary information to the base station, where the auxiliary information includes the first terminal identifier of the first terminal and/or the first terminal identifier sent by the first terminal. 1. Business identification.

In an implementation manner, the first terminal identifier may be a sidelink identifier, C-RNTI or 5G-S-TMSI.

In an implementation manner, the first terminal sends the C-RNTI or 5G-S-TMSI to the relay terminal.

Embodiment 16: Based on any one of Embodiments 11 to 15, the relay terminal may release the corresponding first service bearer after determining that all connected first terminals are no longer interested in the currently received first service.

In an implementation manner, the relay terminal may determine that the first terminal is not interested in a certain first service based on receiving the second indication information sent by the first terminal.

In an exemplary embodiment, the present disclosure also provides a communication system. The communication system may include a first terminal, a relay terminal and a network device, wherein the first terminal may perform the steps described in the foregoing embodiments of the present disclosure. A communication method executed by a terminal; the relay terminal can execute the communication method executed by the relay terminal in the foregoing embodiments of the present disclosure; the network device can execute the communication method executed by the network device in the foregoing embodiments of the present disclosure.

Figure 14 is a block diagram of a first terminal according to an exemplary embodiment. As shown in Figure 14, the first terminal 151 may include:

The first sending module 2101 is configured to send first indication information to the relay terminal; wherein the first indication information is used to indicate the first service that the first terminal expects to receive;

The first receiving module 2102 is configured to receive service data sent by the relay terminal; the service data is data corresponding to the first service that the first terminal expects to receive.

In some embodiments, the first receiving module 2102 is configured to receive the service data sent by the relay terminal through a direct link; the direct link is between the first terminal and the Links between relay terminals.

In some embodiments, the first receiving module 2102 is further configured to receive the service configuration information sent by the relay terminal; the service configuration information includes configuration information of at least one first service;

The first terminal also includes:

The first processing module 2103 is configured to determine the first service that the first terminal expects to receive from at least one first service indicated by the service configuration information.

In some embodiments, the service configuration information includes radio bearer configuration information corresponding to the first service and direct link radio link control SL-RLC configuration information.

In some embodiments, the first processing module 2103 is further configured to establish the radio bearer and SL-RLC entity corresponding to the first service according to the service configuration information;

The first receiving module 2102 is configured to receive the service data sent by the relay terminal through the SL-RLC entity and the radio bearer.

In some embodiments, the first indication information includes a first service identifier, and the first service identifier is an identifier corresponding to the first service that the first terminal expects to receive.

In some embodiments, the first sending module 2101 is configured to send second indication information to the relay terminal; wherein the second indication information is used to indicate that the first terminal no longer wishes to receive the first business.

In some embodiments,

The second indication information includes a second service identifier, and the second service identifier is an identifier of the first service that the first terminal no longer expects to receive; or,

The second indication information includes a third service identifier. The third service identifier is the identifier of the first service that the first terminal currently expects to receive. In addition to the first service corresponding to the third service identifier, other third services A service is a first service that the first terminal no longer expects to receive.

In some embodiments, the first service is a multicast broadcast service MBS.

Figure 15 is a block diagram of a relay terminal according to an exemplary embodiment. As shown in Figure 15, the relay terminal 153 may include:

The second receiving module 2201 is configured to receive the first indication information sent by the first terminal; wherein the first indication information is used to indicate the first service that the first terminal expects to receive;

The second sending module 2202 is configured to send service data to the first terminal; the service data is data corresponding to the first service that the first terminal expects to receive.

In some embodiments, the second sending module 2202 is configured to send the service data to the first terminal through a direct link; the direct link is between the first terminal and the links between terminals.

In some embodiments, the second receiving module 2201 is further configured to receive service configuration information sent by the network device; the service configuration information includes configuration information of at least one first service;

The second sending module 2202 is also configured to send the service configuration information to the first terminal.

In some embodiments, the service configuration information includes radio bearer configuration information corresponding to the first service and direct link radio link control SL-RLC configuration information;

The relay terminal also includes:

The second processing module 2203 is configured to establish an SL-RLC entity corresponding to the first service according to the service configuration information;

The second sending module 2202 is configured to send the service data to the first terminal through the SL-RLC entity.

In some embodiments, the service configuration information also includes radio link control RLC configuration information corresponding to the first service;

The second processing module 2203 is also configured to establish an RLC entity corresponding to the first service according to the RLC configuration information;

The second receiving module 2201 is configured to receive service data sent by the network device through the RLC entity.

In some embodiments, the second processing module 2203 is configured to determine a first wireless network temporary identity RNTI according to the first indication information; the first RNTI is the first service that the first terminal expects to receive. Corresponding RNTI;

The second receiving module 2201 is configured to receive service data sent by the network device according to the first RNTI.

In some embodiments, the first indication information includes a first service identifier, and the first service identifier is an identifier corresponding to the first service that the first terminal expects to receive.

In some embodiments, the second receiving module 2201 is further configured to receive second indication information sent by the first terminal; wherein the second indication information is used to indicate that the first terminal no longer wishes to receive First business;

The second processing module 2203 is further configured to release the first service that the first terminal no longer expects to receive according to the second indication information.

In some embodiments,

The second indication information includes a second service identifier, and the second service identifier is an identifier of the first service that the first terminal no longer expects to receive; or,

The second indication information includes a third service identifier. The third service identifier is the identifier of the first service that the first terminal currently expects to receive. In addition to the first service corresponding to the third service identifier, other third services A service is a first service that the first terminal no longer expects to receive.

In some embodiments, the second sending module 2202 is also configured to send first auxiliary information to the network device; the first auxiliary information includes a first terminal identification and/or a first service identification, and the The first terminal identifier is the identifier of the first terminal, and the first service identifier is the service identifier of the MBS that the first terminal expects to receive.

In some embodiments, the first service is a multicast broadcast service MBS.

Figure 16 is a block diagram of a network device according to an exemplary embodiment. As shown in Figure 16, the network device 160 may include:

The third sending module 2301 is configured to send service data to the relay terminal; the service data is used by the relay terminal to forward data to the first terminal according to the first instruction information, and the first instruction information is used to indicate that the The first service that the first terminal desires to receive.

In some embodiments, the third sending module 2301 is further configured to send service configuration information to the relay terminal; the service configuration information includes configuration information of at least one first service.

In some embodiments, the service configuration information includes at least one of radio bearer configuration information corresponding to the first service, direct link radio link control SL-RLC configuration information, and radio link control RLC configuration information.

In some embodiments, the network device further includes:

The third receiving module 2302 is configured to receive the first auxiliary information sent by the relay terminal; the first auxiliary information includes a first terminal identifier and/or a first service identifier, and the first terminal identifier is the The identifier of the first terminal, where the first service identifier is the service identifier of the MBS that the first terminal expects to receive.

In some embodiments, the first service is a multicast broadcast service MBS.

Regarding the devices in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

Figure 17 is a block diagram of a communication device according to an exemplary embodiment. The communication device 3000 may be a first terminal, a relay terminal or a network device in the communication system shown in FIG. 1 .

Referring to Figure 17, the apparatus 3000 may include one or more of the following components: a processing component 3002, a memory 3004, and a communications component 3006.

The processing component 3002 may be used to control the overall operations of the device 3000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the above communication method. Additionally, processing component 3002 may include one or more modules that facilitate interaction between processing component 3002 and other components. For example, processing component 3002 may include a multimedia module to facilitate interaction between the multimedia component and processing component 3002.

Memory 3004 is configured to store various types of data to support operations at device 3000. Examples of such data include instructions for any application or method operating on device 3000, contact data, phonebook data, messages, pictures, videos, etc. Memory 3004 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EEPROM), Programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

Communication component 3006 is configured to facilitate wired or wireless communication between apparatus 3000 and other devices. The device 3000 can access a wireless network based on communication standards, such as Wi-Fi, 2G, 3G, 4G, 5G, 6G, NB-IOT, eMTC, etc., or a combination thereof. In one exemplary embodiment, the communication component 3006 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3006 also includes a near field communication (NFC) module to facilitate short-range communications. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 3000 may be configured by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Gate array (FPGA), controller, microcontroller, microprocessor or other electronic components are implemented for performing the above communication method.

The above-mentioned device 3000 can be an independent electronic device or a part of an independent electronic device. For example, in one embodiment, the electronic device can be an integrated circuit (Integrated Circuit, IC) or a chip, where the integrated circuit can be an IC can also be a collection of multiple ICs; the chip can include but is not limited to the following types: GPU (Graphics Processing Unit, graphics processor), CPU (Central Processing Unit, central processing unit), FPGA (Field Programmable Gate Array, Programmable logic array), DSP (Digital SignalProcessor, digital signal processor), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), SOC (System on Chip, SoC, system on a chip or system-level chip), etc. The above integrated circuit or chip can be used to execute executable instructions (or codes) to implement the above communication method. The executable instructions can be stored in the integrated circuit or chip, or can be obtained from other devices or devices. For example, the integrated circuit or chip includes a processor, a memory, and an interface for communicating with other devices. The executable instructions can be stored in the processor, and when the executable instructions are executed by the processor, the above communication method is implemented; or, the integrated circuit or chip can receive the executable instructions through the interface and transmit them to the processor for execution, to implement the above communication methods.

In an exemplary embodiment, the present disclosure also provides a computer-readable storage medium on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the communication method provided by the present disclosure are implemented. For example, the computer-readable storage medium may be a non-transitory computer-readable storage medium including instructions, for example, may be the above-mentioned memory 3004 including instructions, and the above-mentioned instructions may be executed by the processor 3020 of the device 3000 to complete the above-mentioned communication. method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a function for performing the above when executed by the programmable device. The code part of the communication method.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure that follow the general principles of the disclosure and include common knowledge or customary technical means in the technical field that are not disclosed in the disclosure. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the appended claims.

Claims (31)

1. A method of communication, the method comprising:

the first terminal sends first indication information to the relay terminal; the first indication information is used for indicating a first service expected to be received by the first terminal;

receiving service data sent by the relay terminal; the service data is data corresponding to a first service expected to be received by the first terminal.

2. The method of claim 1, wherein the receiving the service data sent by the relay terminal comprises:

receiving the service data sent by the relay terminal through a direct link; the direct link is a link between the first terminal and the relay terminal.

3. The method according to claim 1, wherein the method further comprises:

receiving service configuration information sent by the relay terminal; the service configuration information comprises configuration information of at least one first service;

And determining the first service expected to be received by the first terminal from at least one first service indicated by the service configuration information.

4. A method according to claim 3, wherein the service configuration information comprises radio bearer configuration information and direct link radio link control SL-RLC configuration information corresponding to the first service.

5. The method according to claim 4, wherein the method further comprises:

according to the service configuration information, establishing a radio bearer and an SL-RLC entity corresponding to the first service;

the receiving the service data sent by the relay terminal comprises the following steps:

and receiving the service data sent by the relay terminal through the SL-RLC entity and the radio bearer.

6. The method of claim 1, wherein the first indication information includes a first service identifier, the first service identifier being an identifier corresponding to a first service that the first terminal desires to receive.

7. The method according to claim 1, wherein the method further comprises:

sending second indication information to the relay terminal; the second indication information is used for indicating the first service which the first terminal no longer expects to receive.

8. The method of claim 7, wherein the step of determining the position of the probe is performed,

the second indication information comprises a second service identifier, wherein the second service identifier is an identifier of a first service which the first terminal no longer expects to receive; or,

the second indication information comprises a third service identifier, wherein the third service identifier is an identifier of a first service which the first terminal expects to receive currently, and other first services except the first service corresponding to the third service identifier are first services which the first terminal does not expect to receive any more.

9. The method according to any of claims 1 to 8, wherein the first service is a multicast broadcast service, MBS.

10. A method of communication, the method comprising:

the relay terminal receives first indication information sent by a first terminal; the first indication information is used for indicating a first service expected to be received by the first terminal;

sending service data to the first terminal; the service data is data corresponding to a first service expected to be received by the first terminal.

11. The method of claim 10, wherein the sending traffic data to the first terminal comprises:

Transmitting the service data to the first terminal through a direct link; the direct link is a link between the first terminal and the relay terminal.

12. The method according to claim 10, wherein the method further comprises:

receiving service configuration information sent by network equipment; the service configuration information comprises configuration information of at least one first service;

and sending the service configuration information to the first terminal.

13. The method according to claim 12, wherein the service configuration information includes radio bearer configuration information and direct link radio link control SL-RLC configuration information corresponding to the first service;

the method further comprises the steps of:

according to the service configuration information, establishing a SL-RLC entity corresponding to the first service;

the sending the service data to the first terminal includes:

and transmitting the service data to the first terminal through the SL-RLC entity.

14. The method of claim 13, wherein the service configuration information further comprises radio link control RLC configuration information corresponding to the first service;

the method further comprises the steps of:

according to the RLC configuration information, an RLC entity corresponding to the first service is established;

And receiving service data sent by the network equipment through the RLC entity.

15. The method according to claim 10, wherein the method further comprises:

determining a first radio network temporary identifier RNTI according to the first indication information; the first RNTI is an RNTI corresponding to a first service expected to be received by the first terminal;

and receiving service data sent by the network equipment according to the first RNTI.

16. The method of claim 10, wherein the first indication information includes a first service identifier, the first service identifier being an identifier corresponding to a first service that the first terminal desires to receive.

17. The method according to claim 10, wherein the method further comprises:

receiving second indication information sent by a first terminal; the second indication information is used for indicating a first service which the first terminal no longer expects to receive;

and according to the second indication information, releasing the first service which the first terminal no longer expects to receive.

18. The method of claim 17, wherein the step of determining the position of the probe is performed,

the second indication information comprises a second service identifier, wherein the second service identifier is an identifier of a first service which the first terminal no longer expects to receive; or,

The second indication information comprises a third service identifier, wherein the third service identifier is an identifier of a first service which the first terminal expects to receive currently, and other first services except the first service corresponding to the third service identifier are first services which the first terminal does not expect to receive any more.

19. The method according to claim 10, wherein the method further comprises:

transmitting first auxiliary information to the network device; the first auxiliary information comprises a first terminal identifier and/or a first service identifier, wherein the first terminal identifier is an identifier of the first terminal, and the first service identifier is a service identifier of an MBS (multicast service provider) expected to be received by the first terminal.

20. The method according to any of the claims 10 to 19, characterized in that the first service is a multicast broadcast service, MBS.

21. A method of communication, the method comprising:

the network equipment sends service data to the relay terminal; the service data is used for the relay terminal to forward the data to the first terminal according to first indication information, and the first indication information is used for indicating a first service expected to be received by the first terminal.

22. The method of claim 21, wherein the method further comprises:

sending service configuration information to a relay terminal; the service configuration information includes configuration information of at least one first service.

23. The method of claim 22, wherein the service configuration information comprises at least one of radio bearer configuration information, direct link radio link control, SL-RLC, configuration information, and radio link control, RLC, configuration information corresponding to the first service.

24. The method of claim 21, wherein the method further comprises:

receiving first auxiliary information sent by the relay terminal; the first auxiliary information comprises a first terminal identifier and/or a first service identifier, wherein the first terminal identifier is an identifier of the first terminal, and the first service identifier is a service identifier of an MBS (multicast service provider) expected to be received by the first terminal.

25. The method according to any of the claims 21 to 24, characterized in that said first service is a multicast broadcast service, MBS.

26. A first terminal, comprising:

the first sending module is configured to send first indication information to the relay terminal; the first indication information is used for indicating a first service expected to be received by the first terminal;

The first receiving module is configured to receive service data sent by the relay terminal; the service data is data corresponding to a first service expected to be received by the first terminal.

27. A relay terminal, comprising:

the second receiving module is configured to receive first indication information sent by the first terminal; the first indication information is used for indicating a first service expected to be received by the first terminal;

the second sending module is configured to send service data to the first terminal; the service data is data corresponding to a first service expected to be received by the first terminal.

28. A network device, comprising:

a third transmitting module configured to transmit service data to the relay terminal; the service data is used for the relay terminal to forward the data to the first terminal according to first indication information, and the first indication information is used for indicating a first service expected to be received by the first terminal.

29. A communication device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the method of any one of claims 1 to 9, or the processor is configured to perform the steps of the method of any one of claims 10 to 20, or the processor is configured to perform the steps of the method of any one of claims 21 to 25.

30. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, perform the steps of the method according to any of claims 1 to 9, or which when executed by a processor, perform the steps of the method according to any of claims 10 to 20, or which when executed by a processor, perform the steps of the method according to any of claims 21 to 25.

31. A communication system, comprising:

a first terminal performing the method of any of claims 1 to 9;

a relay terminal performing the method of any of claims 10 to 20;

a network device performing the method of any of claims 21 to 25.