Method and apparatus for scheme of control information transmission

Patent metadata

Field	Value
Publication number	US-12470976-B2
Application number	US-202218145382-A
Country	US
Kind code	B2
Filing date	Dec 22, 2022
Priority date	Dec 23, 2021
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system. A method performed by a first integrated access and backhaul (IAB) node which is a F1-terminating IAB donor node in a wireless communication system is provided. The method includes receiving, from a second IAB node which is a non-F1-terminating IAB donor node, a first message including backhaul (BH) related information for at least one IAB node of a non-F1-terminating topology associated with the second IAB node and transmitting, to a third IAB node which is an IAB node connected with the first IAB node and the second IAB node, a second message including configuration information for the third IAB node.

First claim

The invention claimed is:

1 . A method performed by a first integrated access and backhaul (IAB) node which is a F1-terminating IAB donor node in a wireless communication system, the method comprising:
receiving, from a second IAB node which is a non-F1-terminating IAB donor node, a first message including backhaul (BH) related information for a non-F1-terminating topology associated with the second IAB node, wherein the BH related information includes at least one of information on an identity of a BH radio link control (RLC) channel, or information on a next-hop backhaul adaptation protocol (BAP) address; and transmitting, to a third IAB node which is an IAB node connected with the first IAB node and the second IAB node, a second message including configuration information for the third IAB node, wherein the configuration information includes at least one of information indicating a type of traffic as a BAP control protocol data unit (PDU), information on an egress BH channel identity, or information indicating the non-F1-terminating topology.

2 . The method of claim 1 , further comprising:
transmitting, to the second IAB node, a request message to release traffics served by the second IAB node; and receiving, from the second IAB node, a response message as a response to the request message, wherein the request message includes at least one of indexes of the traffics or indexes of BH information, and wherein the response message includes information for identifying released traffics.

3 . The method of claim 1 , further comprising:
receiving, from the second IAB node, a request message to release traffics served by the IAB node; and transmitting, to the second IAB node, a response message as a response to the request message, wherein the request message includes at least one of an identity indexes of the traffics or indexes of BH information, and wherein the response message includes information for identifying released traffics.

4 . The method of claim 1 , further comprising:
transmitting, to the second IAB node, threshold configuration information, wherein the threshold configuration information includes a threshold value of a buffer size to determine a congestion.

5 . A method performed by a second integrated access and backhaul (IAB) node which is a non-F1-terminating IAB donor node in a wireless communication system, the method comprising:
transmitting, to a first IAB node which is a F1-terminating IAB donor node, a first message including backhaul (BH) related information for a non-F1-terminating topology associated with the second IAB node, wherein the BH related information includes at least one of information on an identity of a BH radio link control (RLC) channel, or information on a next-hop backhaul adaptation protocol (BAP) address, wherein the first message is for transmitting configuration information to a third IAB node which is an IAB node connected with the first IAB node and the second IAB node, and wherein the configuration information includes at least one of information indicating a type of traffic as a BAP control protocol data unit (PDU), information on an egress BH channel identity, or information indicating the non-F1-terminating topology.

6 . The method of claim 5 , further comprising:
receiving, from the second IAB node, a request message to release traffics served by the second IAB node; and transmitting, to the second IAB node, a response message as a response to the request message, wherein the request message includes at least one of indexes of the traffics or indexes of BH information, and wherein the response message includes information for identifying released traffics.

7 . The method of claim 5 , further comprising:
transmitting, to the second IAB node, a request message to release traffics served by the IAB node; and receiving, the second IAB node, a response message as a response to the request message, wherein the request message includes at least one of indexes of the traffics or indexes of BH information, and wherein the response message includes information for identifying released traffics.

8 . The method of claim 5 , further comprising:
receiving, from the second IAB node, threshold configuration information, wherein the threshold configuration information includes a threshold value of a buffer size to determine a congestion.

9 . A first integrated access and backhaul (IAB) node which is a F1-terminating IAB donor node, the first IAB node comprising:
at least one transceiver; at least one processor communicatively coupled to the at least one transceiver; and at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the first IAB node to:
receive, from a second IAB node which is a non-F1-terminating IAB donor node, a first message including backhaul (BH) related information for a non-F1-terminating topology associated with the second IAB node, wherein the BH related information includes at least one of information on an identity of a BH radio link control (RLC) channel, or information on a next-hop backhaul adaptation protocol (BAP) address; and
transmit, to a third IAB node which is an IAB node connected with the first IAB node and the second IAB node, a second message including configuration information for the third IAB node, wherein the configuration information includes at least one of information indicating a type of traffic as a BAP control protocol data unit (PDU), information on an egress BH channel identity, or information indicating the non-F1-terminating topology.

10 . The first IAB node of claim 9 ,
wherein the instructions further cause the first IAB node to:
transmit, to the second IAB node, a request message to release traffics served by the second IAB node; and
receive, from the second IAB node, a response message as a response to the request message,
wherein the request message includes at least one of indexes of the traffics or indexes of BH information, and wherein the response message includes information for identifying released traffics.

11 . The first IAB node of claim 9 ,
wherein the instructions further cause the first IAB node to:
receive, from the second IAB node, a request message to release traffics served by the IAB node; and
transmit, to the second IAB node, a response message as a response to the request message,
wherein the request message includes at least one of indexes of the traffics or indexes of BH information, and wherein the response message includes information for identifying released traffics.

12 . The first IAB node of claim 9 ,
wherein the instructions further cause the first IAB node to:
transmit, to the second IAB node, threshold configuration information, and
wherein the threshold configuration information includes a threshold value of a buffer size to determine a congestion.

13 . A second integrated access and backhaul (IAB) node which is a non-F1-terminating IAB donor node, the second IAB node comprising:
at least one transceiver; at least one processor communicatively coupled to the at least one transceiver; and at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the second IAB node to:
transmit, to a first IAB node which is a F1-terminating IAB donor node, a first message including backhaul (BH) related information for a non-F1-terminating topology associated with the second IAB node, wherein the BH related informa

Assignees

• Samsung Electronics Co Ltd

Inventors

• Wang Weiwei
• Wang Hong
• Xu Lixiang

Classifications

• H04W28/0284 Primary

  detecting congestion or overload during communication (monitoring arrangements H04L43/00) · CPC title

• H04W88/08

  Access point devices · CPC title

• H04W28/0289 Primary

  Congestion control (load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12) · CPC title

• H04W40/24

  Connectivity information management, e.g. connectivity discovery or connectivity update · CPC title

• H04W40/22

  using selective relaying for reaching a BTS [Base Transceiver Station] or an access point · CPC title