CN117015987A

CN117015987A - Communication method, device and storage medium

Info

Publication number: CN117015987A
Application number: CN202380009656.7A
Authority: CN
Inventors: 杨星
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2023-11-07

Abstract

The present disclosure relates to a communication method, apparatus, and storage medium. The method comprises the following steps: the method comprises the steps that a first terminal sends first indication information to a relay terminal and receives service data sent by the relay terminal; the first indication information is used for indicating a first service expected to be received by the first terminal, and the service data is data corresponding to the first service expected to be received by the first terminal. Thus, the first terminal can realize the service data receiving of the first service through the relay terminal, so that the plurality of services can be realized through the support of the relay terminal.

Description

Communication method, device and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communication method, apparatus, and storage medium.

Background

With the development of wireless communication technology, in order to achieve direct communication between terminal devices, the third generation partnership project (3rd Generation Partnership Project,3GPP) defines a communication manner of a direct link (Sidelink, which may also be referred to as a side link). For example, one typical application scenario of a direct link is the Vehicle-to-evaluation (V2X). In the Internet of vehicles, each vehicle can be used as a terminal, and information transmission can be carried out between the terminals through a direct link, so that communication time delay can be effectively reduced.

Disclosure of Invention

The embodiment of the disclosure provides a communication method, a device and a storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a communication method performed by a first terminal, the method comprising:

sending first indication information to a 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.

According to a second aspect of embodiments of the present disclosure, there is provided a communication method performed by a relay terminal, the method comprising:

receiving 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.

According to a third aspect of embodiments of the present disclosure, there is provided a communication method performed by a network device, the method comprising:

sending service data to a 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.

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

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.

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

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.

According to a sixth aspect of embodiments of the present disclosure, there is provided 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.

According to a seventh aspect of embodiments of the present disclosure, there is provided a communication apparatus comprising:

a processor;

a memory for storing processor-executable instructions;

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

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

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

a first terminal, the first terminal being capable of executing the communication method provided in the first aspect of the present disclosure;

a relay terminal that can perform the communication method provided in the second aspect of the present disclosure;

a network device that can perform the communication method provided in the third aspect of the present disclosure.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the method comprises the steps that a first terminal sends first indication information to a relay terminal and receives service data sent by the relay terminal; the first indication information is used for indicating a first service expected to be received by the first terminal, and the service data is data corresponding to the first service expected to be received by the first terminal. Thus, the first terminal can realize the service data receiving of the first service through the relay terminal, so that the plurality of services can be realized through the support of the relay terminal.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

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, shown according to an exemplary embodiment.

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

Fig. 3 is a schematic diagram illustrating a method of transmitting service data according to an exemplary embodiment.

Fig. 4 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 5 is a flow chart illustrating a method of communication according to an exemplary embodiment.

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

Fig. 7 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 8 is a flow chart illustrating a method of communication according to an exemplary embodiment.

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

Fig. 10 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 11 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 12 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 13 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 14 is a block diagram of a first terminal, according to an example embodiment.

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

Fig. 16 is a block diagram of a network device, according to an example embodiment.

Fig. 17 is a block diagram illustrating a communication device according to an example embodiment.

Detailed Description

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

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

Unless otherwise indicated, the same reference numerals in different figures may refer to the same elements throughout the description with reference to the figures. Although the operations or steps are described in a particular order in the disclosed embodiments or figures, this should not be understood as requiring that the operations or steps be performed in the particular order shown or in sequential order, or that all of the illustrated operations or steps be performed, to achieve desirable results. In the disclosed embodiments, these operations or steps may be performed in any order, without conflict; these operations or steps may also be performed in parallel; some of these operations or steps may also be performed; operations or steps in various embodiments or figures may be combined in any manner and are not limited by the disclosed embodiments.

In describing embodiments of the present disclosure, unless otherwise indicated, "a plurality" means two or more, and other adjectives are similar thereto. "at least one item", "an item" or "a plurality of items" or the like, refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one term(s) may represent any number; as another example, one (or more) of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. "and/or" is an association relationship describing an association object, meaning that there may be three relationships, e.g., a and/or B, which may represent: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" indicates that the front-rear association object is an or relationship.

In describing embodiments of the present disclosure, the singular forms "a," "an," "the," "said," "the," and "such" may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated or clearly indicated by the context. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the description of the embodiments of the present disclosure, "in a case a, in another case B", "in response to a case a", "in response to another case B", and the like, the following technical solutions may be included according to circumstances: a is performed independently of B, i.e., a in some embodiments; b is performed independently of a, i.e., in some embodiments B; a and B are selectively performed, i.e., in some embodiments selected from a and B; both a and B are performed, i.e., a and B in some embodiments. Similar to that described above when there are more branches such as A, B, C.

In the description of the embodiments of the present disclosure, the "a or B" recording manner may include the following technical solutions according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments execution is selected from a and B (a and B are selectively executed). Similar to that described above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In the description of the embodiments of the present disclosure, "including a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In the description of the embodiments of the present disclosure, terms "responsive to … …", "responsive to determination … …", "in the case of … …", "at … …", "when … …", "if … …", "if … …", and the like may be interchanged without contradiction or lack of characterization.

In the description of the embodiments of the present disclosure, terms such as "greater than", "greater than or equal to", "not less than", "more than or equal to", "not less than", "above", "below", and the like may be replaced with terms such as "less than", "less than or equal to", "not greater than", "less than or equal to", "not more than", "below", "and the like may be replaced with terms such as" below ", and the like, without contradiction or no feature description.

In the description of the embodiments of the present disclosure, an apparatus or the like may be interpreted as an entity, or may be interpreted as a virtual, and the names thereof are not limited to the names described in the embodiments, "apparatus," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip system," "entity," "body," and the like may be replaced with each other.

In the description of the embodiments of the present disclosure, the names of messages or information interacted between a plurality of devices are for illustrative purposes only and are not intended to limit the scope of such messages or information.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

The following first describes the environment in which embodiments of the present disclosure are implemented.

The technical scheme of the embodiment of the disclosure can be applied to various communication systems. The communication system may include one or more of a fourth generation (the 4th Generation,4G) communication system, a fifth generation (the 5th Generation,5G) communication system, and other future wireless communication systems such as 6G. The communication system may also include one or more of a public land mobile network (Public Land Mobile Network, PLMN) network, a Device-to-Device (D2D) communication system, a machine-to-machine (Machine to Machine, M2M) communication system, an internet of things (Internet of Things, ioT) communication system, a Vehicle-to-evaluation (V2X) communication system, or other communication systems.

Fig. 1 is a schematic diagram of a communication system 100, shown according to an example embodiment. As shown in fig. 1, the communication system 100 may include a terminal device 150 and a network device 160. The communication system may be used to support 4G network access technologies, such as long term evolution (Long Term Evolution, LTE) access technologies, or 5G network access technologies, such as New radio access technologies (New Radio Access Technology, new RAT), or other future wireless communication technologies. It should be noted that, in the communication system, the number of network devices and terminal devices may be one or more, and the number of network devices and terminal devices in the communication system shown in fig. 1 is merely an adaptive example, which is not limited in this disclosure.

The network device of fig. 1 may be used to support communication by the terminal device. For example, the network device may include an evolved base station (evolutional 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 gndeb) in a 5G network; the network device may also include a radio access network (NG-Radio Access Network, NG-RAN) device in a 5G network; the network device may also include at least one of a base station, broadband network service gateway (Broadband Network Gateway, BNG), aggregation switch, or non-3 GPP access device in a future evolved public land mobile network (Public Land Mobile Network, PLMN). Optionally, the network device in the embodiments of the present disclosure may include at least one of the following various forms of base stations, for example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, 5G base stations or future base stations, satellites, transmission points (Transmitting and Receiving Point, TRP), transmission points (Transmitting Point, TP), mobile switching centers, and Device-to-Device (D2D), machine-to-Machine (M2M), internet of things (Internet of Things, ioT), internet of vehicles (V2X), other devices that assume base station functionality in a communication system, and the like, as the embodiments of the present disclosure are not limited in this regard. For convenience of description, in the embodiments of the present disclosure, a device that provides a wireless communication function for a terminal device is collectively referred to as a network device, a base station, or an access network device.

In some embodiments, the network device may include a core network device and an access network device, which may also be referred to as a base station. The terminal device may communicate with the core network device via the access network device.

In some embodiments, AN Access network Device (Access Network Device, AN Device), a radio Access network Device (Radio Access Network Device, RAN Device), a Base Station (BS), a radio Base Station (Radio Base Station), a Fixed Station (Fixed Station), a NODE (NODE), AN Access Point (Access Point), a Transmission Point (Transmission Point, TP), a Reception Point (RP), a Transmission Reception Point (Transmission/Reception Point, the terms TRP) "," Panel "," Antenna Array "," Cell "," Macro Cell "," Small Cell "," Femto Cell "," Pico Cell "," Sector "," Cell Group "," serving Cell "," Carrier "," component Carrier (Component Carrier) ", bandwidth Part (BWP)", etc. may be replaced with each other.

The Terminal device in fig. 1 may be an electronic device providing voice or data connectivity, and may be referred to as a User Equipment (UE), a Subscriber Unit (Subscriber Unit), a Mobile Station (Mobile Station), a Station (Station), a Terminal (Terminal), or the like, for example. By way of example, the terminal device may include a smart phone, a smart wearable device, a smart speaker, a smart tablet, a wireless modem (modem), a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a customer terminal device (Customer Premise Equipment, CPE), and the like. With the development of wireless communication technology, a device that can access a communication system, can communicate with a network device of the communication system, can communicate with other objects through the communication system, or a device that can directly communicate between two or more devices may be a terminal device in an embodiment of the disclosure; for example, terminals and automobiles in intelligent transportation, household devices in intelligent homes, meter reading instruments for electric power in smart grids, voltage monitoring instruments, environment monitoring instruments, video monitoring instruments in intelligent security networks, cash registers, etc. In the embodiments of the present disclosure, the terminal device may communicate with the network device. Communication may also take place between a plurality of terminal devices. The terminal device may be stationary or mobile, and the embodiments of the present disclosure are not limited in this regard.

In some embodiments, "Terminal (Terminal)", "Terminal Device (Terminal Device)", "User Equipment (Ue)", "User Terminal (User Terminal)", "Mobile Station (MS)", "Mobile Terminal (MT)", "Subscriber Station (Subscriber Station)", "Mobile Unit (Mobile Unit)", "Subscriber Unit (Subscriber Unit)", "Wireless Unit (Wireless Unit)", "Remote Unit (Remote Unit)", "Mobile Device (Mobile Device)", "Wireless Device (Wireless Communication Device)", "Remote Device (Mobile Device)", "Mobile Subscriber Station (Mobile Subscriber Station)", "Access Terminal (Access Terminal)", "Mobile Terminal (Mobile Terminal)", "Wireless Terminal (Wireless Terminal)", "Remote Terminal (Terminal Unit)", "User Terminal (Mobile Unit)", "User Agent (Client Terminal)", and the like.

In some embodiments, the access network device, core network device, or network device may be replaced with a terminal. For example, the embodiments of the present disclosure may also be applied to a structure in which an access network device, a core network device, or communication between a network device and a terminal is replaced with communication between a plurality of terminals (for example, device-to-device (D2D), vehicle-to-device (V2X), or the like). In this case, the terminal may have all or part of the functions of the access network device. In addition, terms such as "uplink", "downlink", and the like may be replaced with terms corresponding to communication between terminals (e.g., "side by side or direct connection"). For example, uplink, downlink, etc. may be replaced with a sidelink or a direct link, and uplink, downlink, etc. may be replaced with a sidelink or a direct link.

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. Wherein: the relay terminal 153 may be used to provide a relay function for the first terminal to communicate with the network device, in which case the first terminal 151 may be referred to as a remote terminal or a remote UE (remote UE), and the relay terminal 153 providing the relay function may also be referred to as a relay UE (relay UE).

In some embodiments, communication between relay terminal 153 and network device 160 may be via a first wireless link, which is a non-direct link, which may include an uplink and/or a downlink between the relay terminal and the network device. For example, the first wireless link may include one or more wireless channels, e.g., one or more of PRACH (Physical Random Access Channel ), PUCCH (Physical Uplink Control Channel, physical uplink control channel), PUSCH (Physical Uplink Shared Channel ), PDSCH (Physical Downlink Shared Channel, physical downlink shared channel), PDCCH (Physical Downlink Control Channel ), and the like. The interface between the relay terminal 153 and the network device 160 for communication may be referred to as a first wireless interface, which is a non-direct 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. Illustratively, the direct link may include one or more direct link channels, e.g., one or more of a physical direct link broadcast channel (Physical Sidelink Broadcast Channel, PSBCH), a physical direct link control channel (Physical Sidelink Control Channel, PSCCH), a physical direct link shared channel (Physical Sidelink Shared Channel, PSSCH), and the like. The interface for communication between the first terminal 151 and the relay terminal 153 may be referred to as a PC5 interface or a direct communication interface. The manner in which the direct link communication is performed between the first terminal 151 and the relay terminal 153 may include any one or more of unicast, multicast, or broadcast.

In some embodiments, direct communication may be performed between the first terminal 151 and the network device 160 via a first wireless link; in other embodiments, communication between the first terminal 151 and the network device 160 may also be implemented by a relay terminal; in other embodiments, communication between the first terminal 151 and the network device 160 may be performed either directly via the first wireless link or via a relay terminal.

It should be noted that, in fig. 1, the terminal device 150 may further include a second terminal, a third terminal, or more terminals; the first terminal may be one or more, and the relay terminal may be one or more, which is not limited in this disclosure.

In some embodiments of the present disclosure, the terminal device may receive a multicast broadcast service MBS transmitted by the network device. For example, the network device may send a multicast broadcast service broadcast configuration (MBSBroadcastConfiguration) message on a multicast broadcast service control channel (MBS Control Channel, MCCH) carrying a multicast broadcast service information List (MBSSessionInfoList) provided by the network device (e.g., the current cell), a DRX configuration List (DRX-configpm-List) and a neighbor cell List (MBSNeighbourCellList) providing multicast broadcast services.

One or more pieces of multicast broadcast service information may be carried in the multicast broadcast service list, where one piece of multicast broadcast service information may include at least one piece of information such as a temporary mobile Group identifier (Temporary Mobile Group Identity, TMGI), a broadcast RNTI (Group-Radio Network Temporary Identity, G-RNTI), a broadcast service radio bearer configuration, a neighbor list supporting the multicast broadcast service, or a DRX configuration of the multicast broadcast service. Wherein the TMGI may be used to identify multicast broadcast services and the broadcast services radio bearer configuration may be used to indicate PDCP, RLC configurations. The DRX configuration of the multicast broadcast service may be an index identification that may be used to determine a DRX configuration in the DRX-configpm-List.

If the terminal device is interested in the multicast broadcast service indicated in the multicast broadcast service information list, a radio bearer can be established according to the corresponding radio bearer configuration of the broadcast service, for example, a corresponding PDCP entity and RLC entity can be established, and the multicast broadcast service sent by the network device can be received.

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

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

s201, the network equipment sends service configuration information to the relay terminal.

Wherein 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 may send the service configuration information to the relay terminal through a wireless link (a non-direct link, for example, UU port). For example, the network device may send a first message to the relay terminal through the wireless link, where the first message may include the service configuration information. The first message may include at least one of a radio resource control RRC (Radio Resource Control) message, a medium access control element MAC CE (Medium Access Control Control Element), downlink control information DCI (Downlink Control Information), or other message sent by the network device to the terminal device.

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 a multicast service and/or a broadcast service.

Alternatively, one first service may correspond to one service channel or one service program of the MBS, for example, the service configuration information may include configuration information of a plurality of first services corresponding to programs or channels of a first movie program, a second movie program, a first television program, a first sports channel, and the like, respectively.

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

In some embodiments, the 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 may be used to establish a radio bearer, which may be a packet data convergence protocol PDCP (Packet Data Convergence Protocol) entity. For example, both the network device and the first terminal may establish a radio bearer (e.g., PDCP entity) based on the radio bearer configuration information.

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

Direct link radio link control SL-RLC (Sidelink-Radio Link Control) configuration information: the SL-RLC configuration information may be used to establish the SL-RLC entity. For example, both the relay terminal and the first terminal may establish a 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 transmit the service configuration information to the first terminal through the direct link.

For example, the relay terminal may transmit a second message to the first terminal, and the second message may include the service configuration information. The second message may include at least one of a direct link radio resource control (sip RRC) message, a direct link Medium Access Control (MAC) CE (Sidelink Medium Access Control Control Element), direct link downlink control information (sip 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 RRC reconfiguration message to the first terminal through the direct link, where the service configuration information is carried in the multicast broadcast service broadcast configuration or RRC reconfiguration message.

In some embodiments, the relay terminal may receive 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 service configuration information received from the network device, and transmit the service configuration information to the first terminal in case of establishing a direct link with the first terminal or receiving service request information of the first terminal.

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

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

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

Therefore, the relay terminal can directly forward the service configuration information without carrying out additional processing on the service configuration information, and the load and time delay caused by information processing are reduced.

In other embodiments, the relay terminal may process (e.g., add, delete, or modify a portion of the fields) the received service configuration information, 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 radio bearer configuration information and RLC configuration information corresponding to the first service, but not SL-RLC configuration information; the service configuration information sent by the relay terminal to the first terminal may include radio bearer configuration information and SL-RLC configuration information corresponding to the first service, and 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 radio bearer configuration information and SL-RLC configuration information corresponding to the first service, and does not include RLC configuration information.

In this way, the relay terminal can only forward the service configuration information required by the first terminal to the first terminal, thereby reducing the data volume transmitted by 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 and direct link radio link control SL-RLC configuration information corresponding to the first service. The relay terminal may establish a SL-RLC entity corresponding to the first service according to the service configuration information (e.g., SL-RLC configuration information); the relay terminal may transmit 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, direct link radio link control SL-RLC configuration information, and radio link control RLC configuration information corresponding to the first service. The relay terminal can establish an RLC entity corresponding to the first service according to the RLC configuration information; establishing an SL-RLC entity corresponding to the first service according to the SL-RLC configuration information; in this way, the relay terminal may receive service data transmitted by the network device through the RLC entity, and transmit the service data to the first terminal through the SL-RLC entity.

S203, the first terminal determines a first service expected to be received according to the service configuration information.

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

In one implementation, the first terminal may present information about the first service (e.g., configure a new) to the user according to the service configuration information, and determine, in response to an input instruction from the user, the first service that the first terminal desires to receive.

It should be noted that in the embodiments of the present disclosure, "desired reception" and "interested" may be replaced with each other. For example, the first service that the first terminal desires to receive may also be referred to as a first service that the first terminal is interested in (inter).

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.

Alternatively, the first terminal may establish a radio bearer and a SL-RLC entity corresponding to the first service according to the service configuration information. For example, a radio bearer (e.g., PDCP entity) may be established according to radio bearer configuration information, and a SL-RLC entity may be established according to SL-RLC configuration information. In this way, the first terminal may receive, through the SL-RLC entity and the radio bearer, service data transmitted by the relay terminal, where the service data may be data corresponding to a first service that the first terminal desires to receive.

It should be noted that, the first terminal may establish, according to the service configuration information, a radio bearer and an SL-RLC entity corresponding to a first service that the first terminal expects to receive; the first terminal may also establish radio bearers and SL-RLC entities corresponding to all the first services included in the service configuration information.

S204, the first terminal sends first indication information to the relay terminal.

The first indication information may be used to indicate a first service that the first terminal desires 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 instruction information. The third message may include at least one of a Sidelink RRC message, a Sidelink MAC CE, a Sidelink DCI, or other messages corresponding to the direct link.

The first indication information may also be referred to as first request information, and may be used to request or instruct the relay terminal to send the service data of the first service.

In some embodiments, the first indication information may include a first service identifier, where the first service identifier may be an identifier corresponding to a first service that the first terminal desires 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 may explicitly indicate directly the first service that the first terminal desires to receive.

In other embodiments, the first indication information may include a second service identifier, where the second service identifier may be an identifier of a first service that the first terminal does not desire to receive, and all other first services except the second service identifier are MBS that the first terminal desires to receive or interested in. In this way, the first terminal may implicitly indicate the first service that it desires to receive; the relay terminal may transmit service data of other first services than the first service indicated by the second service identification to the first terminal.

In one implementation, the first service may be an MBS, and the first service identifier or the second service identifier may be a temporary mobile group identifier (Temporary Mobile Group Identity, TMGI) or other identifier for indicating the first service.

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

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

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

In other embodiments, the relay terminal may also establish, according to the service configuration information, a radio bearer and a SL-RLC entity corresponding to a first service that the first terminal desires to receive, where the first indication information is sent and the first indication response information is received.

S205, the relay terminal sends first auxiliary information to the network equipment.

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 an MBS that the first terminal desires to receive.

The first terminal identity may include a direct link sidelink identity, a radio network temporary identity RNTI (Radio Network Temporary Identity), a C-RNTI, a 5G-S-TMSI, a 4G-S-TMSI, or other identity for uniquely identifying the first terminal.

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

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

Optionally, the first auxiliary information may further 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 upon receiving the first indication information sent by the first terminal.

Also, the network device may receive the first auxiliary information transmitted by the relay terminal.

In one implementation, the network device may perform control of 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 when releasing or updating the first service corresponding to the first service identifier, may notify the first terminal. 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 service can be provided to the first terminal.

S206, the network equipment sends the service data to the relay terminal.

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

In some embodiments, the service data may be used for forwarding the data to the first terminal by the relay terminal according to first indication information, where the first indication information is used for indicating a first service that the first terminal desires 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 transmitted by the first terminal and transmit service data to the first terminal. The service data may be data corresponding to a first service that the first terminal desires to receive.

For example, the relay terminal may transmit service data to the first terminal in response to receiving the first indication information transmitted 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 a first radio network temporary identifier RNTI according to the first indication information, and receive service data sent by the network device according to the first RNTI. The first RNTI is an RNTI corresponding to a first service expected to be received by the first terminal.

For example, the relay terminal may monitor a control channel corresponding to the RNTI sent by the network device, so as to receive 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 one implementation, the relay terminal may further receive a service identifier corresponding relationship sent by the network device, where the service identifier corresponding relationship may include a corresponding relationship between the first service identifier and the RNTI. The service identifier correspondence may be carried by any message, for example, 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 the service data.

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

It should be noted that, the first terminal may 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, in the case where the first service is a multicast broadcast service MBS, the first terminal may display corresponding MBS information according to the service data, for example, play a video program, etc.

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

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

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

It is also noted that in embodiments of the present disclosure, "no longer desired to receive", "no desired to receive", "desired to stop receiving", "no longer of interest", "no interest (non-interested)" may be substituted for each other. For example, the first service that the first terminal no longer desires to receive may also be referred to as a first service that the first terminal is not interested in (non-interested), or a first service that the first terminal is no longer interested in, or a first service that the first terminal does not desire to receive.

For example, if the first terminal no longer expects to receive the first service, the second indication information may be sent 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 transmitted to the relay terminal through the first indication information, the second indication information may be transmitted to the relay terminal.

The second instruction information may be the same as or different from the first instruction information.

In some embodiments, the second indication information may include a second service identity, which may be an identity of the first service that the first terminal no longer expects to receive.

In this way, the first terminal may carry in the second indication information an identification of the first service that is no longer desired to be received.

In other embodiments, the second indication information includes a third service identifier, where the third service identifier may be an identifier of a first service that the first terminal currently expects to receive, and all the first services other than the first service corresponding to the third service identifier are 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 desired to be received in the second indication information, and the second indication information does not carry the identifier of the first service that is no longer desired to be received.

And S210, the relay terminal releases the first service which the first terminal no longer expects to receive according to the second indication information.

In some embodiments, the relay terminal may determine a second service identifier according to the second indication information, and release the first service corresponding to the second service identifier, where the second service identifier may be an identifier of the first service that the first terminal no longer expects to receive.

In some embodiments, the relay terminal may release the first SL-RLC entity according to the second indication information, where the first SL-RLC entity is a corresponding SL-RCL entity of 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, in the case where there are a plurality of 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 may release the first service, for example, release the RLC entity and the SL-RLC entity corresponding to the first service; if there is at least one first terminal still desiring 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 the 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 SL-RLC entity corresponding to the second terminal which is no longer desiring to receive the first service.

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

By adopting the method, the first terminal can receive the service data of the first service through the relay terminal, thereby realizing the specific service (such as MBS) in the direct link scene.

Fig. 3 is a schematic diagram illustrating a method of transmitting service data according to an exemplary embodiment. As shown in fig. 3, the network device may transmit 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 may receive the service data through the SL-RLC entity and the PDCP entity. In this way, the relay terminal can realize the forwarding of the service data through the RLC entity and the SL-RLC entity without the PDCP entity.

Note that the PDCP entity may also be referred to as a UU-PDCP entity, the RLC entity may also be referred to as a UU-RLC entity, and the SL-RLC entity may also be referred to as a PC5-RLC entity.

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

Note that, for the relevant descriptions of PDCP, RLC, MAC and PHY, reference may be made to descriptions in the 3GPP protocol, and details are not repeated here.

Fig. 4 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a first terminal in the communication system described above. As shown in fig. 4, the method may include:

s401, the first terminal sends first indication information to the relay terminal.

It should be noted that, for the specific implementation 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 is not repeated herein.

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

In one implementation, the first terminal may send the first indication information to the relay terminal through a direct link. Similarly, the first terminal may 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, under the condition of no contradiction, the present embodiment may be combined with the foregoing embodiment or implementation manner of the present disclosure and various alternatives thereof, and the specific implementation manner of the foregoing steps in the present embodiment may also refer to the description in the embodiment shown in fig. 2 of the present disclosure, which is not repeated herein.

By adopting the method, the first terminal sends the first indication information to the relay terminal and receives the service data sent by the relay terminal; the first indication information is used for indicating a first service expected to be received by the first terminal, and the service data is data corresponding to the first service expected to be received by the first terminal. Thus, the first terminal can realize the service data receiving of the first service through the relay terminal, so that the plurality of services can be realized through the support of the relay terminal.

Fig. 5 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a first terminal in the communication system described above. As shown in fig. 5, the method may include:

s501, the first terminal receives service configuration information sent by the relay terminal.

Wherein the service configuration information comprises configuration information of at least one first service.

It should be noted that, for the specific implementation 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 is not repeated herein.

S502, the first terminal determines a first service expected to be received by the first terminal in at least one first service indicated by the service configuration information.

In some embodiments of the present disclosure, after determining a first service that is desired to be received, the first terminal may receive 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 may establish a radio bearer and a SL-RLC entity corresponding to the first service according to the received service configuration information, and receive service data sent by the relay terminal through the radio bearer and the SL-RLC entity.

In this way, the first terminal can determine the first service expected to be received according to the received service configuration information, and can request the first service from the relay terminal through the first indication information, so that the service data of the first service can be received.

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

s601, the first terminal sends second instruction information to the relay terminal.

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

In this way, the first terminal can indicate to the relay terminal that the first service is no longer expected to be received, so as to reduce the data volume transmitted by the direct link and reduce the network load.

In some embodiments, the first terminal may perform the steps of the embodiments shown in fig. 4, 5 or 6 separately.

In other embodiments, the first terminal may perform the steps of the embodiments shown in fig. 4, 5 and 6 in any order and combination. Illustratively, the first terminal may perform the steps of the embodiment shown in fig. 6 after performing the steps of the embodiment shown in fig. 4; the first terminal may execute the steps of the embodiment shown in fig. 6 after executing the steps of the embodiment shown in fig. 5; the first terminal may also perform the steps of the embodiments shown in fig. 5, 4 and 6 in sequence; the first terminal may also cycle through the steps of the embodiments shown in fig. 4 and 6; the present disclosure is not limited in this regard.

Thus, the first terminal can receive the service data of the first service by flexibly combining the above steps.

Fig. 7 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a relay terminal in the above-described communication system. As shown in fig. 7, the method may include:

s701, the relay terminal receives first indication information sent by the first terminal.

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

For example, the relay terminal may transmit service data to the first terminal in response to the first indication information.

By adopting the 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 for indicating a first service expected to be received by the first terminal, and the service data is data corresponding to the first service expected to be received by the first terminal. In this way, the relay terminal can realize the service data transmission of the first service to the first terminal, so as to support the realization of multiple services.

Fig. 8 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a relay terminal in the above-described communication system. As shown in fig. 8, the method may include:

s801, the relay terminal receives service configuration information sent by the network equipment.

Wherein 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 action 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 is not repeated herein.

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

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

In some embodiments, the relay terminal may 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 further establish a SL-RLC entity corresponding to the first service according to 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 radio network temporary identifier RNTI according to the first indication information, and receive service data sent by the network device according to the first RNTI. The first RNTI is an RNTI corresponding to a first service expected to be received by the first terminal.

It should also be noted that, for the specific implementation manner of the above steps in this embodiment, reference may also be made to the description in the embodiment shown in fig. 2 of this disclosure, which is not repeated here.

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

Fig. 9 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a relay terminal in the above-described communication system. As shown in fig. 9, the method may include:

and S901, the relay terminal receives second indication information sent by the first terminal.

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

And S902, the relay terminal releases the first service which the first terminal no longer expects to receive according to the second indication information.

In this way, the relay terminal can release the first service which the first terminal no longer expects to receive, so as to reduce the data volume transmitted by the direct link and reduce the network load.

Fig. 10 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a relay terminal in the above-described communication system. As shown in fig. 9, the method may include:

s1001, the relay terminal transmits 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 may be a service identifier of an MBS that the first terminal desires to receive.

For example, the relay terminal may transmit the first auxiliary information to the network device upon receiving the first indication information transmitted by the first terminal.

In this way, the relay terminal may send the first auxiliary information to the network device, so that the network device controls the first service according to the first auxiliary information.

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

In other embodiments, the relay terminal may perform the steps of the embodiments shown in fig. 7, 8, 9, and 10 in any order and combination. Illustratively, 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 execute the steps of the embodiment shown in fig. 9 after executing the steps of the embodiment shown in fig. 8; the relay terminal may further sequentially perform the steps of the embodiments shown in fig. 8, 7, 10 and 9; the relay terminal may also cycle the steps of the embodiments shown in fig. 7 and 9; the present disclosure is not limited in this regard.

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.

Fig. 11 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a network device in the communication system described above. As shown in fig. 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 the data to the first terminal according to first indication information, where the first indication information may be used to indicate a first service that the first terminal desires to receive.

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

By adopting the method, the network equipment sends service data to the relay terminal; the service data may be used by the relay terminal to forward the data to the first terminal according to first indication information, where the first indication information may be used to indicate a first service that the first terminal desires to receive.

Fig. 12 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a network device in the communication system described above. As shown in fig. 12, the method may include:

s1201, the network device sends service configuration information to the relay terminal.

The service configuration information includes 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, for example.

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

Fig. 13 is a flow chart illustrating a method of communication according to an exemplary embodiment. The method may be performed by a network device in the communication system described above. As shown in fig. 13, the method may include:

S1301, the network equipment receives first auxiliary information sent by the relay terminal.

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

It should be noted that, the steps of the embodiments shown in fig. 11, fig. 12, or fig. 13 may be performed by the network device alone, or the steps of the embodiments shown in fig. 11, fig. 12, and fig. 13 may be performed by the network device in any order and combination, which is not limited in this disclosure.

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

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

In one implementation, the first service identity may be a 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 one implementation, the first terminal may receive the first service sent by the relay terminal on the direct link sidelink.

In one implementation, the first terminal may send one or more first service identities to the relay terminal.

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

Embodiment 2, based on embodiment 1, the first terminal may receive the service configuration information forwarded by the relay terminal, determine that the first service therein is interested, and send the corresponding first service identifier to the relay terminal.

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

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

Wherein the first serving radio bearer configuration may be a PDCP configuration.

Embodiment 4, based on any one of embodiments 1 to 3, the first terminal may establish the first service radio bearer and the corresponding SL-RLC according to the service configuration information, and data of the first service radio bearer is transmitted through the corresponding SL-RLC.

Wherein the first traffic 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 identification that has been sent to the relay terminal, sends the second indication information to the relay terminal.

In one implementation, the second indication information may carry a first service identity that is not of interest.

In one implementation, the second indication information may be a first service identifier of current interest, where the first service identifier of no interest is carried.

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

in 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 one implementation, the relay terminal may send the first service to the first terminal on a direct link sidelink.

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

In embodiment 13, based on embodiment 12, the relay terminal may receive service configuration information sent by the base station, where the service configuration information carries SL-RLC configuration corresponding to the first service.

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

In one implementation, the correspondence of the first service identity and the G-RNTI is indicated in a 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 a first terminal identifier of the first terminal and/or a first service identifier sent by the first terminal.

In one implementation, the first terminal identity may be a sidelink identity or a C-RNTI or a 5G-S-TMSI.

In one implementation, 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 upon determining that all connected first terminals are no longer interested in the currently received first service.

In one implementation, the relay terminal may determine that the first terminal is not interested in a certain first service according to receiving the second indication information sent by the first terminal.

In an exemplary embodiment, the present disclosure further provides a communication system, which may include a first terminal, a relay terminal, and a network device, wherein the first terminal may perform the communication method performed by the first terminal in the foregoing embodiments of the present disclosure; the relay terminal may perform the communication method performed by the relay terminal in the foregoing embodiments of the present disclosure; the network device may perform the communication method performed by the network device in the foregoing embodiments of the present disclosure.

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

a first transmission module 2101 configured to transmit first instruction information to the relay terminal; the first indication information is used for indicating a first service expected to be received by the first terminal;

a first receiving module 2102 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.

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 a link between the first terminal and the relay terminal.

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

the first terminal further includes:

a first processing module 2103 configured to determine a first service that the first terminal desires to receive among at least one first service indicated by the service configuration information.

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

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

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

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

In some embodiments, the first transmitting module 2101 is configured to transmit second indication information to a relay terminal; the second indication information is used for indicating the first service which the first terminal no longer expects to receive.

In some embodiments of the present invention, in some embodiments,

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.

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

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

a second receiving module 2201 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;

a second transmitting module 2202 configured to transmit service data to the first terminal; the service data is data corresponding to a first service expected to be received by the first terminal.

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 a link between the first terminal and the relay terminal.

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 comprises configuration information of at least one first service;

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

In some embodiments, 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 relay terminal further includes:

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

the second transmitting module 2202 is configured to transmit the service data to the first terminal through the SL-RLC entity.

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

the second processing module 2203 is further 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, by the RLC entity, service data sent by the network device.

In some embodiments, the second processing module 2203 is configured to determine 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;

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 second receiving module 2201 is further configured to receive second indication information sent by the first terminal; the second indication information is used for indicating a first service which the first terminal no longer expects to receive;

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

In some embodiments of the present invention, in some embodiments,

In some embodiments, the second transmitting module 2202 is further configured to transmit first assistance 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.

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

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

a third transmitting module 2301 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.

In some embodiments, the third sending module 2301 is further configured to send service configuration information to a 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, direct link radio link control SL-RLC configuration information, and radio link control RLC configuration information corresponding to the first service.

In some embodiments, the network device further comprises:

a third receiving module 2302 configured to receive 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.

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

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 17 is a block diagram illustrating a communication device according to an example embodiment. The communication apparatus 3000 may be a first terminal, a relay terminal, or a network device in the communication system shown in fig. 1.

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

The processing component 3002 may be used to control overall operations of the apparatus 3000, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing assembly 3002 may include one or more processors 3020 to execute instructions to perform all or part of the steps of the communication methods described above. Further, the processing component 3002 may include one or more modules to facilitate interactions between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate interaction between the multimedia component and the processing component 3002.

The memory 3004 is configured to store various types of data to support operations at the apparatus 3000. Examples of such data include instructions for any application or method operating on device 3000, contact data, phonebook data, messages, pictures, videos, and the like. The memory 3004 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The communication component 3006 is configured to facilitate communication between the apparatus 3000 and other devices in a wired or wireless manner. The device 3000 may access a wireless network based on a communication standard, 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 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may 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, the apparatus 3000 may be implemented 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 Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the above-described communication methods.

The apparatus 3000 may be a stand-alone electronic device or may be part of a stand-alone electronic device, for example, in one embodiment, the electronic device may be an integrated circuit (Integrated Circuit, IC) or a chip, where the integrated circuit may be an IC or may be a set of multiple ICs; the chip may include, but is not limited to, the following: GPU (Graphics Processing Unit, graphics processor), CPU (Central Processing Unit ), FPGA (Field Programmable Gate Array, programmable logic array), DSP (Digital Signal Processor ), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), SOC (System on Chip, SOC, system on Chip or System on Chip), etc. The integrated circuits or chips described above may be used to execute executable instructions (or code) to implement the communication methods described above. The executable instructions may be stored on the integrated circuit or chip or may be retrieved from another device or apparatus, such as the integrated circuit or chip including a processor, memory, and interface for communicating with other devices. The executable instructions may be stored in the processor, which when executed by the processor, implement the communication method described above; alternatively, the integrated circuit or chip may receive executable instructions through the interface and transmit them to the processor for execution to implement the communication methods described above.

In an exemplary embodiment, the present disclosure also provides a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the communication method provided by the present disclosure. The computer readable storage medium may be, for example, a non-transitory computer readable storage medium including instructions, for example, the memory 3004 including instructions executable by the processor 3020 of the apparatus 3000 to perform the communication method described above. 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, comprising a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described communication method when executed by the programmable apparatus.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. 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 arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

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;

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,

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;

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,

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:

27. A relay terminal, comprising:

28. A network device, comprising:

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.