IP Library › Granted Patent US 12713307

Granted Patent B2

US 12713307 · App. 18/165,095 · Granted Aug 18, 2026

Integrated access and backhaul node configuration method and communication apparatus

Inventors: Yibin Zhuo (Shenzhen, CN); Yuanping Zhu (Shanghai, CN); Jing Liu (Shanghai, CN); Yulong Shi (Beijing, CN)

Assignee: HUAWEI TECHNOLOGIES CO., LTD.

H04W36/0072 H04W36/08 H04W72/0446

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Quick Facts

Patent No.: US 12713307
App. No.: 18/165,095
Granted: Aug 18, 2026
Kind: B2

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Abstract

An integrated access and backhaul (IAB) node configuration method includes receiving, by a target IAB donor, first information from a source IAB donor. The method also includes sending, by the target IAB donor, first configuration information to the source IAB donor. The first configuration information is for handing over an IAB node from the source IAB donor to the target IAB donor. The IAB node includes a mobile terminal (MT) function and a distributed unit (DU) function. The first configuration information is based on the first information. The first configuration information indicates a transmission direction of a time domain resource configured by the target IAB donor for the MT function. The first information indicates one or more different types of information.

Claims (119)

1 . An integrated access and backhaul (IAB) node configuration method, comprising:

receiving, by a target IAB donor, first information from a source IAB donor;

sending, by the target IAB donor, first configuration information to the source IAB donor; and

sending, by the target IAB donor, second configuration information to the source IAB donor, wherein

the first configuration information is for handing over an IAB node from the source IAB donor to the target IAB donor,

the IAB node comprises a mobile terminal (MT) function and a distributed unit (DU) function,

the first configuration information is based on the first information,

the first configuration information indicates a transmission direction of a time domain resource configured by the target IAB donor for the MT function,

the second configuration information is based on the first information,

the second configuration information indicates one or more of a transmission direction of a time domain resource configured by the target IAB donor for the DU function or a status of the transmission direction of the time domain resource configured by the target IAB donor for the DU function, and

the first information indicates one or more of:

information supporting or not supporting that the MT function receives data and the DU function sends data simultaneously;

information supporting or not supporting that the MT function receives data and the DU function receives data simultaneously;

information supporting or not supporting that the MT function sends data and the DU function sends data simultaneously; or

information supporting or not supporting that the MT function sends data and the DU function receives data simultaneously.

2 . The IAB node configuration method according to claim 1 , further comprising:

receiving, by the target IAB donor, second information from the source IAB donor,

wherein the second information indicates one or more of a transmission direction of a time domain resource configured by the source IAB donor for the DU function or a status of the transmission direction of the time domain resource configured by the source IAB donor for the DU function.

3 . The IAB node configuration method according to claim 2 , wherein

the transmission direction of the time domain resource is an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction, and

the status of the transmission direction of the time domain resource is an available state, a conditionally available state, or a not available state.

4 . An integrated access and backhaul (IAB) node configuration method, comprising:

sending, by a source IAB donor, first information to a target IAB donor;

receiving, by the source IAB donor, first configuration information from the target IAB donor; and

receiving, by the source IAB donor, second configuration information from the target IAB donor,

wherein

the first configuration information is for handing over an IAB node from the source IAB donor to the target IAB donor,

the IAB node comprises a mobile terminal (MT) function and a distributed unit (DU) function,

the first configuration information is based on the first information,

the first configuration information indicates a transmission direction of a time domain resource configured by the target IAB donor for the MT function,

the second configuration information is based on the first information,

the first information indicates one or more of:

information supporting or not supporting that the MT function receives data and the DU function sends data simultaneously;

information supporting or not supporting that the MT function receives data and the DU function receives data simultaneously;

information supporting or not supporting that the MT function sends data and the DU function sends data simultaneously; or

information supporting or not supporting that the MT function sends data and the DU function receives data simultaneously.

5 . The IAB node configuration method according to claim 4 , further comprising:

sending, by the source IAB donor, second information to the target IAB donor,

6 . The IAB node configuration method according to claim 5 , wherein

the transmission direction of the time domain resource is an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction, and

the status of the transmission direction of the time domain resource is an available state, a conditionally available state, or a not available state.

7 . An apparatus in an integrated access and backhaul (IAB) system, comprising:

at least one processor; and

at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to:

receive as a target IAB donor, first information from a source IAB donor;

send as the target IAB donor, first configuration information to the source IAB donor; and

send as the target IAB donor, second configuration information to the source IAB donor, wherein

the first configuration information is for handing over an IAB node from the source IAB donor to the target IAB donor,

the IAB node comprises a mobile terminal (MT) function and a distributed unit (DU) function,

the first configuration information is based on the first information,

the first configuration information indicates a transmission direction of a time domain resource configured by the target IAB donor for the MT function,

the second configuration information is based on the first information,

the first information indicates one or more of:

information supporting or not supporting that the MT function receives data and the DU function sends data simultaneously;

information supporting or not supporting that the MT function receives data and the DU function receives data simultaneously;

information supporting or not supporting that the MT function sends data and the DU function sends data simultaneously; or

information supporting or not supporting that the MT function sends data and the DU function receives data simultaneously.

8 . The apparatus according to claim 7 , wherein the apparatus is further caused to:

receive as the target IAB donor, second information from the source IAB donor,

9 . The apparatus according to claim 8 , wherein

the transmission direction of the time domain resource is an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction, and

the status of the transmission direction of the time domain resource is an available state, a conditionally available state, or a not available state.

10 . An apparatus in an integrated access and backhaul (IAB) system, comprising:

at least one processor; and

at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to:

send as a source IAB donor, first information to a target IAB donor;

receive as the source IAB donor, first configuration information from the target IAB donor; and

receive as the source IAB donor, second configuration information from the target IAB donor, wherein

the first configuration information is for handing over an IAB node from the source IAB donor to the target IAB donor,

the IAB node comprises a mobile terminal (MT) function and a distributed unit (DU) function,

the first configuration information is based on the first information,

the first configuration information indicates a transmission direction of a time domain resource configured by the target IAB donor for the MT function,

the second configuration information is based on the first information,

the first information indicates one or more of:

information supporting or not supporting that the MT function receives data and the DU function sends data simultaneously;

information supporting or not supporting that the MT function receives data and the DU function receives data simultaneously;

information supporting or not supporting that the MT function sends data and the DU function sends data simultaneously; or

information supporting or not supporting that the MT function sends data and the DU function receives data simultaneously.

11 . The apparatus according to claim 10 , wherein the apparatus is further caused to:

send as the source IAB donor, second information to the target IAB donor,

12 . The apparatus according to claim 11 , wherein

the transmission direction of the time domain resource is an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction, and

the status of the transmission direction of the time domain resource is an available state, a conditionally available state, or a not available state.

13 . A integrated access and backhaul (IAB) system, comprising:

a target IAB donor; and

a source IAB donor,

wherein

the target IAB donor is configured to:

receive first information from the source IAB donor;

send first configuration information to the source IAB donor; and

send second configuration information to the source IAB donor,

the source IAB donor is configured to:

send the first information to the target IAB donor;

receive the first configuration information from the target IAB donor; and

receive the second configuration information from the target IAB donor,

the first configuration information is for handing over an IAB node from the source IAB donor to the target IAB donor,

the IAB node comprises a mobile terminal (MT) function and a distributed unit (DU) function,

the first configuration information is based on the first information,

the first configuration information indicates a transmission direction of a time domain resource configured by the target IAB donor for the MT function,

the second configuration information is based on the first information,

the first information indicates one or more of:

information supporting or not supporting that the MT function receives data and the DU function sends data simultaneously;

information supporting or not supporting that the MT function receives data and the DU function receives data simultaneously;

information supporting or not supporting that the MT function sends data and the DU function sends data simultaneously; or

information supporting or not supporting that the MT function sends data and the DU function receives data simultaneously.

14 . The system according to claim 13 , wherein

the target IAB donor is further configured to receive second information from the source IAB donor,

the second information indicates one or more of a transmission direction of a time domain resource configured by the source IAB donor for the DU function or a status of the transmission direction of the time domain resource configured by the source IAB donor for the DU function, and

the source IAB donor is further configured to send the second information to the target IAB donor.

15 . The system according to claim 14 , wherein

the transmission direction of the time domain resource is an uplink transmission direction, a downlink transmission direction, or a flexible transmission direction, and

the status of the transmission direction of the time domain resource is an available state, a conditionally available state, or a not available state.