IP Library › Granted Patent US 12677301

Granted Patent B2

US 12677301 · App. 17/982,935 · Granted Jul 7, 2026

Communication method and apparatus, and storage medium

Inventors: Jianxin Jia (Shanghai, CN); Wenfu Wu (Shanghai, CN); Zaifeng Zong (Nanjing, CN)

Assignee: HUAWEI TECHNOLOGIES CO., LTD.

H04W72/30 H04W4/06

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Quick Facts

Patent No.: US 12677301
App. No.: 17/982,935
Filed: Nov 8, 2022
Granted: Jul 7, 2026
Kind: B2
Examiner: CHANG, KAI J
Art Unit: 2468
USPC: 370/329

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Abstract

A communication method and apparatus, and a storage medium are provided, to resolve a problem in a conventional technology of discontinuity of a multicast/broadcast service of a UE during handover. The method includes: A target access network device receives first multicast/broadcast service data from a source access network device and second multicast/broadcast service data from a core network device; and if determining that the first multicast/broadcast service data is synchronous with the second multicast/broadcast service data, the target access network device sends the second multicast/broadcast service data to a terminal device, so that the continuity of the multicast/broadcast service of the UE during handover is ensured as much as possible.

Claims (84)

1 . A communication method, comprising:

determining, by a target access network device or a chip in a target access network device, first radio bearer configuration information and second radio bearer configuration information of a terminal device, wherein

the first radio bearer configuration information is to be used by the terminal device to receive first multicast/broadcast service data that is transmitted in an air interface unicast mode from the target access network device or the chip in the target access network device, and

the second radio bearer configuration information is to be used by the terminal device to receive second multicast/broadcast service data that is transmitted in an air interface multicast/broadcast mode from the target access network device or the chip in the target access network device;

sending, by the target access network device or the chip in the target access network device, the first radio bearer configuration information and the second radio bearer configuration information to the terminal device through a source access network device.

2 . The method according to claim 1 , wherein the first multicast/broadcast service data and the second multicast/broadcast service data are data of a same-source service.

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

receiving, by the target access network device or the chip in the target access network device, the first multicast/broadcast service data from the source access network device.

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

receiving, by the target access network device or the chip in the target access network device, the first multicast/broadcast service data from the source access network device through a forwarding tunnel corresponding to a first multicast/broadcast session of the terminal device, wherein the first multicast/broadcast session corresponds to a multicast/broadcast service.

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

sending, by the target access network device or the chip in the target access network device, the first multicast/broadcast service data in the air interface unicast mode to the terminal device; and

sending, by the target access network device or the chip in the target access network device, the second multicast/broadcast service data in the air interface multicast/broadcast mode to the terminal device.

6 . A communication method, comprising:

receiving, by a terminal device or a chip in a terminal device, first radio bearer configuration information and second radio bearer configuration information of the terminal device or the chip in the terminal device from a source access network device;

receiving, by the terminal device or the chip in the terminal device using the first radio bearer configuration information, first multicast/broadcast service data that is transmitted in an air interface unicast mode from a target access network device; and

receiving, by the terminal device or the chip in the terminal device using the second radio bearer configuration information, second multicast/broadcast service data that is transmitted in an air interface multicast/broadcast mode from the target access network device.

7 . The method according to claim 6 , wherein the first multicast/broadcast service data and the second multicast/broadcast service data are data of a same-source service.

8 . A communication apparatus, comprising:

a transceiver;

at least one processor; and

one or more memories coupled to the at least one processor and storing programming instructions executable by the at least one processor to cause the communication apparatus to:

determine first radio bearer configuration information and second radio bearer configuration information of a terminal device, wherein

send the first radio bearer configuration information and the second radio bearer configuration information to the terminal device through a source access network device.

9 . The communication apparatus according to claim 8 , wherein the first multicast/broadcast service data and the second multicast/broadcast service data are data of a same-source service.

10 . The communication apparatus according to claim 8 ,

wherein the programming instructions are executable by the at least one processor to further cause the communication apparatus to:

receive the first multicast/broadcast service data from the source access network device.

11 . The communication apparatus according to claim 8 ,

wherein the programming instructions are executable by the at least one processor to further cause the communication apparatus to:

receive the first multicast/broadcast service data from the source access network device through a forwarding tunnel corresponding to a first multicast/broadcast session of the terminal device, wherein the first multicast/broadcast session corresponds to a multicast/broadcast service.

12 . The communication apparatus according to claim 8 ,

wherein the programming instructions are executable by the at least one processor to further cause the communication apparatus to: send the first multicast/broadcast service data in the air interface unicast mode to the terminal device, and

send the second multicast/broadcast service data in the air interface multicast/broadcast mode to the terminal device.

13 . A communication apparatus, comprising:

a transceiver;

at least one processor; and

one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the communication apparatus to:

receive first radio bearer configuration information and second radio bearer configuration information of the communication apparatus from a source access network device;

receive, by using the first radio bearer configuration information, first multicast/broadcast service data that is transmitted in an air interface unicast mode from a target access network device; and

receive, by using the second radio bearer configuration information, second multicast/broadcast service data that is transmitted in an air interface multicast/broadcast mode from the target access network device.

14 . The communication apparatus according to claim 13 , wherein the first multicast/broadcast service data and the second multicast/broadcast service data are data of a same-source service.

15 . A communication method, comprising:

receiving, by a source access network device or a chip in a source access network device, first radio bearer configuration information and second radio bearer configuration information from a target access network device, wherein

the first radio bearer configuration information is to be used by a terminal device to receive first multicast/broadcast service data that is transmitted in an air interface unicast mode from the target access network device, and

sending, by the source access network device or the chip in the source access network device, the first radio bearer configuration information and the second radio bearer configuration information to the terminal device.

16 . The method according to claim 15 , wherein the first multicast/broadcast service data and the second multicast/broadcast service data are data of a same-source service.

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

sending, by the source access network device or the chip in the source access network device, the first multicast/broadcast service data to the target access network device.

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

sending, by the source access network device or the chip in the source access network device, the first multicast/broadcast service data to the target access network device through a forwarding tunnel corresponding to a first multicast/broadcast session of the terminal device, wherein the first multicast/broadcast session corresponds to a multicast/broadcast service.

19 . A communication apparatus, comprising:

a transceiver;

at least one processor; and

one or more memories coupled to the at least one processor and storing programming instructions executable by the at least one processor to cause the communication apparatus to:

receive first radio bearer configuration information and second radio bearer configuration information from a target access network device, wherein

send the first radio bearer configuration information and the second radio bearer configuration information to the terminal device.

20 . The communication apparatus according to claim 19 , wherein the first multicast/broadcast service data and the second multicast/broadcast service data are data of a same-source service.

21 . The communication apparatus according to claim 19 , wherein the programming instructions are executable by the at least one processor to further cause the communication apparatus to:

send the first multicast/broadcast service data to the target access network device.

22 . The communication apparatus according to claim 19 , wherein the programming instructions are executable by the at least one processor to further cause the communication apparatus to:

send the first multicast/broadcast service data to the target access network device through a forwarding tunnel corresponding to a first multicast/broadcast session of the terminal device, wherein the first multicast/broadcast session corresponds to a multicast/broadcast service.

23 . A communication system, comprising:

a target access network device or a chip in a target access network device;

a source access network device or a chip in a source access network device; and

a terminal device or a chip in a terminal device;

wherein the target access network device or the chip in the target access network device is configured to:

determine first radio bearer configuration information and second radio bearer configuration information of the terminal device or the chip in the terminal device, wherein

the first radio bearer configuration information is to be used by the terminal device or the chip in the terminal device to receive first multicast/broadcast service data that is transmitted in an air interface unicast mode from the target access network device or the chip in the target access network device, and

the second radio bearer configuration information is to be used by the terminal device or the chip in the terminal device to receive second multicast/broadcast service data that is transmitted in an air interface multicast/broadcast mode from the target access network device or the chip in the target access network device; and

send the first radio bearer configuration information and the second radio bearer configuration information to the source access network device or the chip in the source access network device; and

wherein the source access network device or the chip in the source access network device is configured to:

receive the first radio bearer configuration information and the second radio bearer configuration information; and

send the first radio bearer configuration information and the second radio bearer configuration information to the terminal device or the chip in the terminal device; and

wherein the terminal device or the chip in the terminal device is configured to:

receive the first radio bearer configuration information and the second radio bearer configuration information of the terminal device or the chip in the terminal device from the source access network device or the chip in the source access network device;

receive, by using the first radio bearer configuration information, the first multicast/broadcast service data that is transmitted in the air interface unicast mode from the target access network device or the chip in the target access network device; and

receive, by using the second radio bearer configuration information, the second multicast/broadcast service data that is transmitted in the air interface multicast/broadcast mode from the target access network device or the chip in the target access network device.

24 . The system according to claim 23 , wherein the first multicast/broadcast service data and the second multicast/broadcast service data are data of a same-source service.