US 12,218,867 B2
Method implemented by device to transmit reference signal, computer program product, and device
Cristina Ciochina, Rennes (FR)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/273,520
Filed by MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
PCT Filed Oct. 1, 2019, PCT No. PCT/JP2019/039418
§ 371(c)(1), (2) Date Mar. 4, 2021,
PCT Pub. No. WO2020/090350, PCT Pub. Date May 7, 2020.
Claims priority of application No. 18306438 (EP), filed on Oct. 31, 2018.
Prior Publication US 2021/0218530 A1, Jul. 15, 2021
Int. Cl. H04L 5/00 (2006.01); H04W 92/18 (2009.01)
CPC H04L 5/0048 (2013.01) [H04W 92/18 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method implemented by a user equipment to transmit reference signal, RS, in a device-to-device, D2D, communication in a wireless communication system, the method comprising:
selecting, by the user equipment, an RS pattern among a set of at least two RS patterns, stored in the user equipment, according to at least conditions related to a radio channel of the D2D communication and/or to a communication parameter of the D2D communication;
emitting a radio signal for D2D communication according to the selected RS pattern;
wherein the selection of the RS pattern by the user equipment comprises:
obtaining a value corresponding to the conditions related to a radio channel of the D2D communication or to the communication parameter of the D2D communication;
receiving a set of thresholds Th0, . . . , Thn, where, Thi≤Thi+1, 0≤i≤n−1 and either a set of each half-open interval [Thi; Thi+1) or a set of each half-open interval (Thi; Thi+1] corresponds to a subset of the set of at least two RS patterns;
comparing the value with the set of thresholds Th0, . . . , Thn, and disabling an i-th subset of the at least two RS patterns where Thi=Thi+1; and
selecting an RS pattern among the subset corresponding to the half-open interval in which the value is based on the comparing.