Patent ID: 11895718
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A method of performing device-to-device (D2D) communication by a second device, the method comprising:
transmitting at least one first reference signal to a first device in a first mode;
receiving, from the first device, at least one transmission parameter adjusted by the first device based on a relative velocity between the first device and the second device; and
receiving data from the first device based on the at least one transmission parameter received from the first device,
wherein the at least one transmission parameter is included in a plurality of transmission parameters determined by the first device based on an channel state in the first mode,
wherein the channel state is estimated by the first device based on the at least one first reference signal in the first mode,
wherein the method further comprises:
receiving at least one second reference signal from the first device in a second mode;
generating channel state information based on the at least one second reference signal in the second mode; and
providing the channel state information to the first device in the second mode,

wherein the plurality of transmission parameters is determined by the first device based on the channel state information in the second mode, and
wherein the first mode is a channel reciprocity mode and the second mode is a channel state information feedback mode.