US 12,224,958 B2
Method and apparatus for transmitting and receiving reference signal for sidelink communication
Gene Back Hahn, Gyeonggi-do (KR); In Yong Jung, Gyeonggi-do (KR); and Hyuk Min Son, Jeollabuk-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Wonkwang University Center for Industry-Academy Cooperation, Jeollabuk-do (KR)
Appl. No. 17/276,651
Filed by Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Wonkwang University Center For Industry-Academy Cooperation, Jeollabuk-do (KR)
PCT Filed Dec. 24, 2020, PCT No. PCT/KR2020/019147
§ 371(c)(1), (2) Date Nov. 1, 2022,
PCT Pub. No. WO2021/141306, PCT Pub. Date Jul. 15, 2021.
Claims priority of provisional application 62/958,464, filed on Jan. 8, 2020.
Prior Publication US 2023/0064036 A1, Mar. 2, 2023
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/0051 (2013.01) 20 Claims
OG exemplary drawing
 
1. An operation method of a first terminal in a communication system, the operation method comprising:
receiving a message including a first demodulation reference signal (DMRS) scrambling identifier NID for sidelink communication from a base station;
calculating a first pseudo-random sequence cinit by inputting the first DMRS scrambling identifier NID into Equation 1;
cinit=(217(Nsymbslotns,fμ+l+1)(2NID+1)+2NID) mod 231  (Equation 1)
calculating a first DMRS sequence rl(m) by inputting the first pseudo-random sequence cinit into Equation 2; and

OG Complex Work Unit Math
transmitting sidelink control information (SCI) and a first DMRS generated based on the first DMRS sequence rl(m) to a second terminal through a physical sidelink control channel (PSCCH),
wherein Nsymbslot denotes a number of symbols in a slot, ns,fμ denotes a slot number in a frame, and l denotes a symbol number in the slot.