Method and device for supporting cell reselection operation in mobile iab

Patent metadata

Field	Value
Publication number	US-2026046724-A1
Application number	US-202318998056-A
Country	US
Kind code	A1
Filing date	Jul 26, 2023
Priority date	Jul 26, 2022
Publication date	Feb 12, 2026
Grant date	—

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting higher data rates. The present disclosure relates to a method for performing cell reselection in mobile IAB. According to one embodiment of the present invention, a method by which a terminal operates in a wireless communication system may be disclosed. The method may comprise the steps of: receiving a system information block (SIB) from a base station; identifying whether the base station is a mobile integrated access and backhaul (IAB) node, on the basis of a mobile IAB indicator included in the SIB; and, when the base station for a serving cell of the terminal is a mobile IAB node, performing cell reselection on the basis of cell reselection parameters for the mobile IAB included in the SIB.

First claim

1 . A method performed by a terminal in a wireless communication system, the method comprising:
receiving a system information block (SIB) from a base station: identifying, based on a mobile integrated access and backhaul (IAB) indicator included in the SIB, whether the base station is associated with a mobile IAB cell; and performing cell reselection based on mobile IAB-specific cell reselection parameters included in the SIB in case that a serving cell of the terminal is the mobile IAB cell.

2 . The method of claim 1 ,
wherein the SIB includes a list of mobile IAB cells for inter-frequency cell reselection.

3 . The method of claim 1 , wherein a frequency associated with the mobile IAB cell is considered to be the highest priority.

4 . The method of claim 1 , wherein the mobile IAB-specific cell reselection parameters include a mobile IAB-specific reselection time value.

5 . The method of claim 1 , wherein the mobile IAB-specific cell reselection parameters include threshold values for received signal quality and received signal strength.

6 . The method of claim 1 , wherein the mobile IAB-specific cell reselection parameters include offset values to be applied to cell-ranking values.

7 . The method of claim 1 , wherein the mobile IAB-specific cell reselection parameters include cell reselection priority information for multiple mobile IAB cells.

8 . The method of claim 2 , further comprising:
performing cell reselection based on the list of mobile IAB cells for inter-frequency cell reselection in case that the serving cell of the terminal is not a mobile IAB cell and a neighbor cell of the terminal is a mobile IAB cell.

9 . A terminal operating in a wireless communication system, comprising:
a transceiver; and a controller, wherein the controller is configured to:
receive a system information block (SIB) from a base station,
identify, based on a mobile integrated access and backhaul (IAB) indicator included in the SIB, whether the base station is associated with a mobile IAB cell, and
perform cell reselection based on mobile IAB-specific cell reselection parameters included in the SIB in case that serving cell of the terminal is the mobile IAB cell.

10 . The terminal of claim 9 , wherein the SIB includes a list of mobile IAB cells for inter-frequency cell reselection.

11 . The terminal of claim 9 , wherein a frequency associated with the mobile IAB cell is considered to be the highest priority.

12 . The terminal of claim 9 , wherein the mobile IAB-specific cell reselection parameters include a mobile IAB-specific reselection time value.

13 . The terminal of claim 9 , wherein the mobile IAB-specific cell reselection parameters include threshold values for received signal quality and received signal strength.

14 . The terminal of claim 9 , wherein the mobile IAB-specific cell reselection parameters include offset values to be applied to cell-ranking values, and cell reselection priority information for multiple mobile IAB cells.

15 . The terminal of claim 10 , wherein the controller is further configured to:
perform cell reselection based on the mobile IAB-specific cell reselection parameters in case that the base station associated with the serving cell of the terminal is not a mobile IAB node and a cell close to the terminal is a mobile IAB cell.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Sangbum
• Jung Sangyeob
• Hwang June

Classifications

• H04W84/047

  using dedicated repeater stations · CPC title

• H04W48/20 Primary

  Selecting an access point · CPC title

• H04W36/0061

  of neighbour cell information · CPC title

• H04W36/0058

  Transmission of hand-off measurement information, e.g. measurement reports · CPC title

• H04W36/13 Primary

  Cell handover without a predetermined boundary, e.g. virtual cells · CPC title