US 12,256,296 B2
Sidelink connection establishment design to support unicast and groupcast communication for NR V2X
Ansab Ali, Cupertino, CA (US); Kyeongin Jeong, Cupertino, CA (US); Sangeetha L. Bangolae, Cupertino, CA (US); and Youn Hyoung Heo, Cupertino, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/422,665
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Jan. 16, 2020, PCT No. PCT/US2020/013914
§ 371(c)(1), (2) Date Jul. 13, 2021,
PCT Pub. No. WO2020/150495, PCT Pub. Date Jul. 23, 2020.
Claims priority of provisional application 62/793,126, filed on Jan. 16, 2019.
Prior Publication US 2022/0124466 A1, Apr. 21, 2022
Int. Cl. H04L 69/24 (2022.01); H04W 4/40 (2018.01); H04W 80/04 (2009.01)
CPC H04W 4/40 (2018.02) [H04W 80/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting, by a user equipment (UE), an announcement of support for a vehicle-to-everything (V2X) service using a unicast or a groupcast communication;
transmitting, by the UE, a first connection establishment request message to establish a secure link to a second UE, to support a V2X communication to enable the V2X service, wherein the first connection establishment request message is transmitted over a PC5-S interface;
receiving, by the UE, a first response message from the second UE over the PC5-S interface that accepts the first connection establishment request message;
transmitting, by the UE, a second connection establishment request message that is transmitted over a PC5-Radio Resource Control (PC5-RRC) interface to the second UE; and
receiving, by the UE, a second response message from the second UE over the PC5-RRC interface that accepts or rejects the second connection establishment request message.