Operating method for iab node in wireless communication system, and apparatus using same

Patent metadata

Field	Value
Publication number	US-2023164747-A1
Application number	US-202117799129-A
Country	US
Kind code	A1
Filing date	Feb 10, 2021
Priority date	Feb 12, 2020
Publication date	May 25, 2023
Grant date	—

Abstract

Provided are a method of operating an integrated access and backhaul (IAB) node including a mobile terminal (MT) and a distributed unit (DU) in a wireless communication system, and an apparatus using the method. The method identifies a specific resource supporting the simultaneous operation of the MT and the DU, and according to a type of a first signal that the MT intends to communicate in the specific resource and a type of a second signal that the DU intends to communicate in the specific resource, a multiplexing type to be applied to the specific resource is determined.

First claim

1 . A method of operating an integrated access and backhaul (IAB) node including a distributed unit (DU) and a mobile terminal (MT) in a wireless communication system, the method comprising:
receiving first configuration information for configuring a resource for an operation of the MT; receiving second configuration information for configuring a resource for an operation of the DU; and identifying a specific resource supporting simultaneous operation of the MT and the DU based on the first configuration information and the second configuration information, wherein according to a type of a first signal that the MT intends to communicate in the specific resource and a type of a second signal that the DU intends to communicate in the specific resource, a multiplexing type to be applied to the specific resource is determined.

2 . The method of claim 1 , wherein based on a signal related to a physical random access channel (PRACH) transmitted by the MT or a sounding reference signal (SRS) being included as the type of the first signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a second multiplexing type operating with TDM for transmission of the MT.

3 . The method of claim 1 , wherein based on a synchronization signal or a channel state information reference signal (CSI-RS) received by the MT being included as the type of the first signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a third multiplexing type operating with TDM for reception of the MT.

4 . The method of claim 1 , wherein based on a synchronization signal or a channel state information reference signal (CSI-RS) transmitted by the DU being included as the type of the second signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a fourth multiplexing type operating with TDM for transmission of the DU.

5 . The method of claim 1 , wherein based on a signal related to a physical random access channel (PRACH) or a sounding reference signal (SRS) received by the DU being included as the type of the second signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a fifth multiplexing type operating with TDM for reception of the DU.

6 . The method of claim 1 , wherein a multiplexing type to be applied to the specific resource and a multiplexing type to be applied to another resource located after the specific resource are different from each other.

7 . An integrated access and backhaul (IAB) node including a distributed unit (DU) and a mobile terminal (MT), the IAB node comprising:
a transceiver; at least one memory; and at least one processor operatively coupled with the at least one memory and the transceiver, wherein the processor is configured to: receive first configuration information for configuring a resource for an operation of the MT; receive second configuration information for configuring a resource for an operation of the DU; and identify a specific resource supporting simultaneous operation of the MT and the DU based on the first configuration information and the second configuration information, wherein according to a type of a first signal that the MT intends to communicate in the specific resource and a type of a second signal that the DU intends to communicate in the specific resource, a multiplexing type to be applied to the specific resource is determined.

8 . The IAB node of claim 7 , wherein based on a signal related to a physical random access channel (PRACH) transmitted by the MT or a sounding reference signal (SRS) being included as the type of the first signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a second multiplexing type operating with TDM for transmission of the MT.

9 . The IAB node of claim 7 , wherein based on a synchronization signal or a channel state information reference signal (CSI-RS) received by the MT being included as the type of the first signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a third multiplexing type operating with TDM for reception of the MT.

10 . The IAB node of claim 7 , wherein based on a synchronization signal or a channel state information reference signal (CSI-RS) transmitted by the DU being included as the type of the second signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a fourth multiplexing type operating with TDM for transmission of the DU.

11 . The IAB node of claim 7 , wherein based on a signal related to a physical random access channel (PRACH) or a sounding reference signal (SRS) received by the DU being included as the type of the second signal, the multiplexing type to be applied to the specific resource is i) a first multiplexing type operating with time division multiplexing (TDM) for all transmission/reception combinations of the MT and the DU, or ii) a fifth multiplexing type operating with TDM for reception of the DU.

12 . The IAB node of claim 7 , wherein a multiplexing type to be applied to the specific resource and a multiplexing type to be applied to another resource located after the specific resource are different from each other.

13 . (canceled)

14 . (canceled)

15 . A method for a parent node to communicate with an integrated access and backhaul (IAB) node including a distributed unit (DU) and a mobile terminal (MT) in a wireless communication system, the method comprising:
transmitting, to the IAB node, first configuration information for configuring a resource for an operation of the MT; transmitting, to the IAB node, second configuration information for configuring a resource for an operation of the DU; and communicating with the IAB node in a specific resource supporting simultaneous operation of the MT and the DU based on the first configuration information and the second configuration information, wherein a multiplexing type applied to the specific resource is determined according to a type of a first signal that the MT intends to communicate in the specific resource and a type of a second signal that the DU intends to communicate in the specific resource.

16 . (canceled)

Assignees

• Lg Electronics Inc

Inventors

• You Hyangsun
• Ko Hyunsoo

Classifications

• H04W74/0833

  Random access procedures, e.g. with 4-step access · CPC title

• H04W84/047

  using dedicated repeater stations · CPC title

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04W88/04

  adapted for relaying to or from another terminal or user · CPC title

• H04W72/535 Primary

  based on resource usage policies · CPC title