Granted Patent B2

US 12,635,027 · App. 18/314,209 · Granted May 19, 2026

Inventors: Haifeng Yu (Beijing, CN); Bingzhao Li (Beijing, CN); Zhenzhen Cao (Boulogne Billancourt, FR); Lei Chen (Beijing, CN)

Assignee: HUAWEI TECHNOLOGIES CO., LTD.

H04W76/20H04W72/23

Abstract

Claims (33)

1 . A communication method, comprising:

obtaining, by a terminal device or a chip in the terminal device, configuration information of a multicast service, wherein the configuration information is useable by the terminal device to receive data of the multicast service; and

receiving first indication information from an access network device, wherein the first indication information is useable to indicate a manner of obtaining configuration update information of the multicast service, wherein

the manner of obtaining the configuration update information of the multicast service is a first manner or a second manner, wherein the first manner is obtaining the configuration update information by receiving a common message, and the second manner is obtaining the configuration update information by receiving a dedicated message;

wherein the first indication information is included in a second radio resource control (RRC) message, a media access control (MAC) control element (CE), or downlink control information (DCI); and

the first indication information comprises an index of the manner of obtaining the configuration update information of the multicast service.

2 . The method according to claim 1 , wherein the obtaining configuration information of the multicast service comprises:

receiving a first radio resource control (RRC) message from the access network device, wherein the first RRC message comprises the configuration information of the multicast service; or

receiving the common message from the access network device, wherein the common message comprises the configuration information of the multicast service.

3 . The method according to claim 1 , wherein before the receiving the first indication information from the access network device, the method further comprises:

receiving a third RRC message from the access network device, wherein the third RRC message comprises an index of the first manner and an index of the second manner.

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

receiving second indication information from the access network device, wherein the second indication information is useable to indicate an effective time of the first indication information.

5 . A communication method, comprising:

sending, by an access network device or a chip in the access network device, configuration information of a multicast service, wherein the configuration information is useable by a terminal device to receive data of the multicast service; and

sending first indication information to the terminal device, wherein the first indication information is useable to indicate a manner of obtaining configuration update information of the multicast service by the terminal device, wherein

the manner of obtaining the configuration update information of the multicast service is a first manner or a second manner, wherein the first manner is obtaining the configuration update information by receiving a common message, and the second manner is obtaining the configuration update information by receiving a dedicated message;

wherein the first indication information is carried in a second radio resource control (RRC) message, a media access control (MAC) control element (CE), or downlink control information (DCI); and

the first indication information comprises an index of the manner of obtaining the configuration update information of the multicast service.

6 . The method according to claim 5 , wherein the sending configuration information of the multicast service comprises:

sending a first radio resource control (RRC) message to the terminal device, wherein the first RRC message comprises the configuration information of the multicast service; or

sending the common message, wherein the common message comprises the configuration information of the multicast service.

7 . The method according to claim 5 , wherein before the sending the first indication information to the terminal device, the method further comprises:

sending a third RRC message to the terminal device, wherein the third RRC message comprises an index of the first manner and an index of the second manner.

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

sending second indication information to the terminal device, wherein the second indication information is useable to indicate an effective time of the first indication information.

9 . A communication apparatus, wherein the apparatus comprises

a terminal device or a chip in the terminal device configured to perform operations comprising:

obtaining configuration information of a multicast service, wherein the configuration information is useable by the terminal device to receive data of the multicast service; and

receiving first indication information from an access network device, wherein the first indication information is useable to indicate a manner of obtaining configuration update information of the multicast service by the terminal device, wherein

the manner of obtaining the configuration update information of the multicast service is a first manner or a second manner, wherein the first manner is obtaining the configuration update information by receiving a common message, and the second manner is obtaining the configuration update information by receiving a dedicated message;

wherein the first indication information is carried in a second radio resource control (RRC) message, a media access control (MAC) control element (CE), or downlink control information (DCD; and

the first indication information comprises an index of the manner of obtaining the configuration update information of the multicast service.

Assignments (1)

Continuity (2)

References Cited (61)