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

Claim 0:
1. A method of performing device-to-device (D2D) communication by a first device, the method comprising:
in a first mode:
receiving at least one first reference signal from a second device;
estimating a channel state based on the at least one first reference signal; and
determining a plurality of transmission parameters based on the estimated channel state; or

in a second mode:
transmitting at least one second reference signal to the second device;
receiving channel state information from the second device corresponding to the at least one second reference signal; and
determining the plurality of transmission parameters based on the channel state information; and

in the first mode or the second mode:
obtaining at least one measurement value corresponding to a relative velocity between the first device and the second device;
adjusting at least one transmission parameter, among the plurality of transmission parameters, based on the at least one measurement value;
providing the adjusted at least one transmission parameter to the second device; and
transmitting data to the second device based on the adjusted at least one transmission parameter,

wherein the first mode is a channel reciprocity mode and the second mode is a channel state information feedback mode.