Granted Patent B2

US 12,621,880 · App. 17/401,926 · Granted May 5, 2026

Inventors: Yuanping Zhu (Shanghai, CN); Mingzeng Dai (Shenzhen, CN); Yibin Zhuo (Shenzhen, CN); Jing Liu (Shanghai, CN)

Assignee: Huawei Technologies Co., LTD.

H04W76/11H04W36/0019H04W36/0064H04W76/12

Abstract

Claims (43)

1 . An identifier management method, comprising:

receiving, by a first donor node, first indication information sent by a first node to the first donor node, wherein the first indication information indicates to the first donor node that the first node is an integrated access and backhaul (IAB) node;

in response to receiving the first indication information, obtaining, by the first donor node, a first identifier, wherein the first identifier includes an IP address of the first node that is allocated by an OAM to the first node;

sending, by the first donor node, handover request information to a second donor node, wherein the handover request information requests to connect the first node to the second donor node;

receiving, by the first donor node from the second donor node, identification information of the first node allocated by the second donor node, wherein the identification information of the first node is an adaptation layer identifier; and

in response to receiving the identification information of the first node from the second donor node, sending, by the first donor node to the first node, a handover command, wherein the handover command carries the identification information of the first node;

wherein the first donor node comprises a distributed unit (DU) and a centralized unit (CU), and wherein the method further comprises:

receiving, by the DU, first configuration information sent by the CU, wherein the first configuration information comprises a first adaptation layer identifier of the first node and the IP address of the first node;

receiving, by the DU, a first data packet sent by the CU, wherein the first data packet comprises the IP address of the first node and data; and

sending, by the DU to the first node, a second data packet, wherein the second data packet comprises the IP address of the first node and the data.

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

allocating, by the first donor node to the first node, the first adaptation layer identifier of the first node;

sending, by the first donor node to the first node, the first adaptation layer identifier of the first node; and

sending, by the first donor node to a second node, the first adaptation layer identifier of the first node, wherein the second node is a parent node of the first node.

3 . The method according to claim 2 , wherein sending, by the first donor node to the first node, the first adaptation layer identifier of the first node comprises:

sending, by the first donor node to the first node, an F1 application protocol (F1AP) message comprising the first adaptation layer identifier of the first node.

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

receiving, by the DU from the CU, an adaptation layer identifier which is allocated by the CU to the DU.

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

receiving, by the DU, a third data packet which comprises an IP layer identifier of a target wireless backhaul node; and

adding, by the DU, an adaptation layer identifier of the target wireless backhaul node into the third data packet.

6 . The method according to claim 1 , wherein the first indication information further indicates the first donor node to allocate a first adaptation layer identifier to the first node.

7 . The method according to claim 1 , wherein the first indication information further indicates the first donor node to allocate the first identifier to the first node, and the first identifier further includes an identifier of the first donor node.

8 . A first donor node, comprising at least one processor and at least memory storing instructions, wherein the instructions are executed by the at least one processor to cause the first donor node to perform a method of:

receiving first indication information sent by a first node to the first donor node, wherein the first indication information indicates to the first donor node that the first node is an integrated access and backhaul (IAB) node;

in response to receiving the first indication information, obtaining a first identifier, wherein the first identifier includes an IP address of the first node that is allocated by an OAM to the first node;

sending handover request information to a second donor node, wherein the handover request information requests to connect the first node to the second donor node;

receiving, from the second donor node, identification information of the first node allocated by the second donor node, wherein the identification information of the first node is an adaptation layer identifier; and

in response to receiving the identification information of the first node from the second donor node, sending, to the first node, a handover command, wherein the handover command carries the identification information of the first node;

wherein the first donor node comprises a distributed unit (DU) and a centralized unit (CU), and wherein the DU is configured to:

receive first configuration information sent by the CU, wherein the first configuration information comprises a first adaptation layer identifier of the first node and the IP address of the first node;

receive a first data packet sent by the CU, wherein the first data packet comprises the IP address of the first node and data; and

send a second data packet to the first node, wherein the second data packet comprises the IP address of the first node and the data.

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

allocating, to the first node, the first adaptation layer identifier of the first node;

sending, to the first node, the first adaptation layer identifier of the first node; and

sending, to a second node, the first adaptation layer identifier of the first node, wherein the second node is a parent node of the first node.

10 . The node according to claim 9 , wherein sending, to the first node, the first adaptation layer identifier of the first node comprises:

sending, to the first node, an F1 application protocol (F1AP) message comprising the first adaptation layer identifier of the first node.

11 . The node according to claim 8 , wherein the DU is configured to receive, from the CU, an adaptation layer identifier which is allocated by the CU to the DU.

12 . The node according to claim 8 , wherein the DU is configured to:

receive a third data packet comprising an IP layer identifier of a target wireless backhaul node; and

add an adaptation layer identifier of the target wireless backhaul node into the third data packet.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (26)