US 11,723,068 B2
Method for terminal to transmit and receive sidelink signal in wireless communication system supporting sidelink, and device for same
Hyukjin Chae, Seoul (KR); and Hanbyul Seo, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/58,648
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed May 27, 2019, PCT No. PCT/KR2019/006325
§ 371(c)(1), (2) Date Nov. 24, 2020,
PCT Pub. No. WO2019/226029, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. 10-2018-0059881 (KR), filed on May 25, 2018.
Prior Publication US 2021/0212117 A1, Jul. 8, 2021
Int. Cl. H04W 74/08 (2009.01); H04W 72/04 (2023.01)
CPC H04W 74/0808 (2013.01) [H04W 72/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of transmitting a sidelink signal by a user equipment (UE) in a wireless communication system supporting sidelink, the method comprising:
performing a synchronization for a sidelink communication;
receiving configuration information for configuring a resource pool including a plurality of sub-channels for sidelink communication;
determining a plurality of candidate resources based on reserved resources sensed from the resource pool and a received strength of a signal;
based on an attribute of a packet included in the sidelink signal, determining to perform additional carrier sensing for selecting a transmission resource from among the plural candidate resources;
based on performing the carrier sensing, selecting the transmission resource; and
transmitting the sidelink signal based on the selected transmission resource,
wherein the additional carrier sensing is performed based on a back-off counter that is backed off by a detection of a reception strength below a specific threshold for each of the plurality of sub-channels, and
wherein a counter value of the back-off counter is selected within a differently configured a counter range based on the attribute of the packet.