Patent ID: 9661594
Date: 2017-05-23
CPC Classifications: H04L,H04W

Claim:
1. A method for communicating between wireless devices in a wireless communication system, the method comprising: determining, by a first wireless device, a reference timing; determining, by the first wireless device, a transmission timing of a subframe based on the reference timing, the subframe including a plurality of Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols; and communicating, by the first wireless device, directly with a second wireless device by using the subframe, wherein the reference timing is defined by a downlink reception timing for receiving a downlink subframe from a base station, wherein the direct communication between the first wireless device and the second wireless device uses an uplink carrier frequency of the base station, and wherein a last SC-FDMA symbol of the subframe is not used for the direct communication between the first wireless device and the second wireless device.