US 12,261,785 B2
Apparatus and method for multiplexing switching of integrated access and backhaul node in wireless communication system
Seunghoon Choi, Suwon-si (KR); Youngbum Kim, Suwon-si (KR); Hyunseok Ryu, Suwon-si (KR); and Sungjin Park, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 11, 2022, as Appl. No. 17/741,816.
Claims priority of application No. 10-2021-0060754 (KR), filed on May 11, 2021.
Prior Publication US 2022/0368478 A1, Nov. 17, 2022
Int. Cl. H04W 88/14 (2009.01); H04L 5/00 (2006.01)
CPC H04L 5/0023 (2013.01) [H04L 5/0053 (2013.01); H04W 88/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method performed by a first integrated access and backhaul (IAB) node in a wireless communication system, the method comprising:
receiving, from a second IAB node, multiplexing scheme configuration information of data transmitted or received by a mobile termination (MT) and a distributed unit (DU) included in the first IAB node;
based on the multiplexing scheme configuration information, determining a multiplexing scheme to be used by the first IAB node to among a spatial division multiplexing (SDM) scheme or a frequency division multiplexing (FDM) scheme;
transmitting or receiving data using the SDM scheme or the FDM scheme;
identifying whether a fallback condition from the SDM scheme or the FDM scheme to a time division multiplexing, TDM, scheme is satisfied;
controlling data transmission and reception of the MT, and data transmission and reception of the DU on an allocated radio resource for transmission and reception of the TDM scheme based on the multiplexing scheme configuration information and the data transmission and reception of the MT before switching to the TDM scheme, in case that the data transmission and reception of the MT on the allocated radio resource is not complete,
wherein the allocated radio resource is determined a soft type resource, for the transmission and reception of the MT that does not affect the transmission and reception of the DU, or
wherein the transmission and reception of the MT has priority to the data transmission and reception of the DU; and
switching the multiplexing scheme to be used by the first IAB node to the TDM scheme, in case that the fallback condition to the TDM scheme is satisfied.