CN-116250257-B - Communication method, device and system

Abstract

A communication method, apparatus and system may be performed by a second terminal device, or may be performed by a component of the second terminal device (e.g., a processor, chip, or system-on-a-chip, etc.). In the method, a second terminal device receives first information from a first terminal device, wherein the first information comprises an identification of the first MBS, the first MBS is interested in the first terminal device, the second terminal device sends a first message to the first terminal device, the first message comprises first configuration information, the first configuration information is used for configuring a first SL radio bearer between the second terminal device and the first terminal device, and the first SL radio bearer is used for transmitting data of the first MBS. The method can solve the problem that the relay terminal equipment cannot forward the MBS data broadcasted by the network equipment to the remote terminal equipment, so that the remote terminal equipment cannot receive the MBS data of the network equipment.

Inventors

• PENG WENJIE

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20200730

Claims (20)

1. 1. A method of communication, comprising: receiving second configuration information from a network device, where the second configuration information is used to receive data of a second multicast broadcast service MBS, where the second configuration information includes information of a first multimedia broadcast multicast service point-to-point radio bearer MRB, the first MRB is used to transmit the data of the second MBS, the information of the first MRB includes first packet data convergence protocol PDCP configuration information, the first PDCP configuration information is used to configure a second PDCP entity, and the second PDCP entity is used to receive the data of the second MBS; transmitting second information to a first terminal device, wherein the second information comprises an identifier of a second MBS, the second MBS is an MBS supported by a first cell, and the first cell is a service cell of the second terminal device; receiving first information from the first terminal equipment, wherein the first information comprises an identifier of a first MBS, the first MBS is an MBS of interest to the first terminal equipment, and the second MBS comprises the first MBS; transmitting a first message to the first terminal device, where the first message includes first configuration information and second PDCP configuration information, the first configuration information is used to configure a first side link SL radio bearer between the second terminal device and the first terminal device, the first SL radio bearer is used to transmit data of the first MBS, the second PDCP configuration information is used to configure a third PDCP entity, and the third PDCP entity is used to receive data of the first MBS.
2. 2. The method according to claim 1, wherein the method further comprises: sending a second message to the network device, wherein the second message comprises third indication information, and the third indication information is used for indicating the first MBS; Receiving a third message from the network device, the third message including third configuration information for configuring the first SL radio bearer.
3. 3. The method of claim 2, wherein the step of determining the position of the substrate comprises, The third message further includes fourth configuration information, where the fourth configuration information is used to configure a first radio bearer between the network device and the second terminal device, and the first radio bearer is used to transmit data of the first MBS.
4. 4. A method according to any one of claims 1 to 3, further comprising: receiving data of the first MBS from the network device; and transmitting the data of the first MBS to the first terminal equipment through the first SL radio bearer.
5. 5. The method according to claim 4, wherein the method further comprises: acquiring at least two pieces of data of the first MBS in a first protocol layer entity according to the data of the first MBS received from a bottom layer entity, wherein the first protocol layer entity is any one of a first packet data convergence protocol PDCP entity, a radio link control layer protocol RLC entity or an adaptation layer entity; and sending one of the data of the at least two first MBS to an upper entity of the first protocol layer entity.
6. 6. The method according to any one of claims 1 to 3, wherein the second configuration information further includes one or more of an identifier of the second MBS, or information of a first time-frequency resource, where the first time-frequency resource is used to carry the second MBS.
7. 7. A method of communication, comprising: Transmitting second configuration information to a second terminal device, where the second configuration information is used to receive data of a second MBS, the second MBS is an MBS supported by a first cell, the first cell is a serving cell of the second terminal device, the second configuration information includes information of a first MRB, the first MRB is used to transmit the data of the second MBS, the information of the first MRB includes first PDCP configuration information, the first PDCP configuration information is used to configure a second PDCP entity, and the second PDCP entity is used to receive the data of the second MBS; Receiving a second message from the second terminal equipment, wherein the second message comprises third indication information, and the third indication information is used for indicating a first multicast broadcast service MBS, and the first MBS is an MBS of interest to the first terminal equipment; Transmitting a third message to the second terminal device, where the third message includes third configuration information and second PDCP configuration information, the third configuration information is used to configure a first side link SL radio bearer between the first terminal device and the second terminal device, the first SL radio bearer is used to transmit data of the first MBS, the second PDCP configuration information is used to configure a third PDCP entity, and the third PDCP entity is used to receive data of the first MBS.
8. 8. The method of claim 7, wherein the step of determining the position of the probe is performed, The third message further includes fourth configuration information, where the fourth configuration information is used to configure a first radio bearer between the second terminal device and the network device, and the first radio bearer is used to transmit data of the first MBS.
9. 9. The method according to claim 7 or 8, wherein the second configuration information further comprises one or more of an identification of the second MBS, or information of a first time-frequency resource, wherein the first time-frequency resource is used for carrying the second MBS, and the first MRB is used for transmitting data of the second MBS.
10. 10. A method of communication, comprising: Receiving second information from a second terminal device, wherein the second information comprises an identifier of a second MBS, the second MBS is an MBS supported by a first cell, and the first cell is a service cell of the second terminal device; Transmitting first information to the second terminal equipment, wherein the first information comprises an identifier of a first Multicast Broadcast Service (MBS), the first MBS is an MBS of interest to the first terminal equipment, and the second MBS comprises the first MBS; Receiving a first message from the second terminal device or receiving fifth configuration information from a network device through the second terminal device; The first message includes first configuration information and second PDCP configuration information, the first configuration information is used for configuring a first side link SL radio bearer between the second terminal device and the first terminal device, the first SL radio bearer is used for transmitting data of the first MBS, the second PDCP configuration information is used for configuring a third PDCP entity, and the third PDCP entity is used for receiving the data of the first MBS; the fifth configuration information is used for receiving the data of the first MBS, the fifth configuration information comprises second PDCP configuration information, the second PDCP configuration information is used for configuring a third PDCP entity, and the third PDCP entity is used for receiving the data of the first MBS.
11. 11. The method of claim 10, wherein prior to transmitting the first information to the second terminal device, the method further comprises: And determining that the first cell supports the first MBS according to the second information.
12. 12. A method of communication, comprising: Receiving sixth configuration information from the network device, where the sixth configuration information is used for the second terminal device to receive the data of the first MBS, the sixth configuration information includes information of a second MRB, the information of the second MRB includes third PDCP configuration information, the third PDCP configuration information is used for configuring a first PDCP entity, and the first PDCP entity is used for receiving the data of the first MBS; Receiving first information from a first terminal device, wherein the first information comprises an identifier of a first Multicast Broadcast Service (MBS), and the first MBS is an MBS of interest to the first terminal device; Transmitting the first information to the network device; Receiving fifth configuration information from the network device, wherein the fifth configuration information is used for the first terminal device to receive the data of the first MBS, and the fifth configuration information comprises second PDCP configuration information, and the second PDCP configuration information is used for configuring a third PDCP entity, and the third PDCP entity is used for receiving the data of the first MBS; and sending the fifth configuration information to the first terminal equipment.
13. 13. The method according to claim 12, wherein the method further comprises: acquiring at least two pieces of data of the first MBS in a first protocol layer entity according to the data of the first MBS received from a bottom layer entity, wherein the first protocol layer entity is any one of a first packet data convergence protocol PDCP entity, a radio link control layer protocol RLC entity or an adaptation layer entity; and sending one of the data of the at least two first MBS to an upper entity of the first protocol layer entity.
14. 14. The method according to claim 12 or 13, wherein the sixth configuration information further comprises one or more of an identification of the first MBS, or information of a second time-frequency resource, wherein the second time-frequency resource is used for carrying the first MBS.
15. 15. A method of communication, comprising: Transmitting sixth configuration information to a second terminal device, where the sixth configuration information is used for the second terminal device to receive data of a first MBS, and the sixth configuration information includes information of a second MRB, where the information of the second MRB includes third PDCP configuration information, where the third PDCP configuration information is used for configuring a first PDCP entity, and the first PDCP entity is used for receiving the data of the first MBS; Receiving, by the second terminal device, first information from a first terminal device, where the first information includes an identifier of a first multicast broadcast service MBS, and the first MBS is an MBS of interest to the first terminal device; transmitting fifth configuration information to the first terminal device through the second terminal device, wherein the fifth configuration information is used for the first terminal device to receive the data of the first MBS, and the fifth configuration information comprises second PDCP configuration information, wherein the second PDCP configuration information is used for configuring a third PDCP entity, and the third PDCP entity is used for receiving the data of the first MBS.
16. 16. The method of claim 15, wherein the sixth configuration information further comprises one or more of an identification of the first MBS, or information of a second time-frequency resource, wherein the second time-frequency resource is used to carry the first MBS.
17. 17. A communication device comprising means for performing the method of any one of claims 1 to 6, or for performing the method of any one of claims 7 to 9, or for performing the method of claim 10 or 11, or for performing the method of any one of claims 12 to 14, or for performing the method of claim 15 or 16.
18. 18. A communications device comprising a processor coupled to a memory for storing a program or instruction that when executed by the processor causes the device to perform the method of any one of claims 1 to 6, or the method of any one of claims 7 to 9, or the method of claim 10 or 11, or the method of any one of claims 12 to 14, or the method of claim 15 or 16.
19. 19. A communication system comprising means for performing the method of any one of claims 1 to 6 and/or means for performing the method of any one of claims 7 to 9 and/or means for performing the method of claim 10 or 11.
20. 20. A communication system comprising means for performing the method of claim 10 or 11 and/or means for performing the method of any of claims 12 to 14 and/or means for performing the method of claim 15 or 16.

Description

Communication method, device and system Technical Field The present application relates to the field of wireless communications technologies, and in particular, to a communication method, device, and system. Background The long term evolution (long term evolution, LTE) system supports the transmission of multicast broadcast services (multicast broadcast service, MBS). The network device may broadcast configuration information of the MBS and data of the MBS within its coverage area. The terminal device located in the coverage area of the network device may receive the configuration information of the MBS, and determine the identifier of the MBS data transmitted by the network device according to the configuration information of the MBS. If there is an MBS of interest to the terminal device in the MBS transmitted by the network device, the terminal device can establish a multimedia broadcast multicast service point-to-point radio bearer (multimedia broadcast multicast service point to multipoint radio bearer, MRB) with the network device according to the configuration information of the MBS so as to receive the data of the MBS of interest to the terminal device. The technology of terminal Equipment and Network Equipment relay (User Equipment-to-Network relay) is a technology capable of effectively improving Network coverage. The Network elements involved in the UE-to-Network relay scenario include Network devices, relay terminal devices (relay user equipment, relay UE), and remote terminal devices (remote UE). The network device and the relay terminal device have radio resource control (radio resource control, RRC) connection, and the relay terminal device and the remote terminal device have Sidelink (SL) unicast connection, so that the remote terminal device can access the network device through the relay terminal device to obtain services from the network device. Taking downlink transmission as an example, the network device may send data to be sent to the remote terminal device to the relay terminal device, where the data is forwarded to the remote terminal device by the relay terminal device. For the data of the MBS, the network equipment is sent in a broadcast or multicast mode, unicast connection is not established between the remote terminal equipment and the network equipment for the MBS under the condition that the remote terminal equipment is out of the coverage range of the network equipment, the relay terminal equipment does not forward the data of the MBS broadcasted by the network equipment to the remote terminal equipment, and the remote terminal equipment cannot receive the data of the MBS from the network equipment. Disclosure of Invention The embodiment of the application provides a communication method, a device and a system, which can realize that remote terminal equipment receives MBS data broadcasted by network equipment through relay terminal equipment. In a first aspect, embodiments of the present application provide a communication method, which may be performed by a second terminal device, or may also be performed by a component (such as a processor, a chip, or a chip system) of the second terminal device. In the method, a second terminal device receives first information from a first terminal device, the first information comprises an identification of the first MBS, the first MBS is interested in the first terminal device, the second terminal device sends a first message to the first terminal device, the first message comprises first configuration information, the first configuration information is used for configuring a first SL radio bearer between the second terminal device and the first terminal device, and the first SL radio bearer is used for transmitting data of the first MBS. In the above technical solution, the first terminal device may report the identifier of the MBS of interest to the second terminal device, so that the second terminal device may intercept and receive, according to the identifier of the first MBS, the data of the MBS of interest of the first terminal device broadcast by the network device. The second terminal device may send the first configuration information to the first terminal device, and may cause the first terminal device to establish a first SL radio bearer with the second terminal device according to the first configuration information, where the first SL radio bearer is used to transmit data of the first MBS, so that the first terminal device may successfully receive the data of the first MBS of the network device through the first SL radio bearer. For example, the above technical solution can solve the problem that in the UE-to-Network relay scenario, the relay terminal device is only passively forwarded as an intermediate node between the Network device and the remote terminal device, and the remote terminal device cannot receive the MBS data broadcast by the Network device because the remote terminal device actively forwards the MBS data br