Patent ID: 9642108
Date: 2017-05-02
CPC Classifications: H04J,H04L,H04W

Claim:
1. In a wireless network that includes a base station, a method, in a first UE, for carrying out device-to-device communication with a second UE, the method comprising: receiving a first control channel indicating a first resource for transmitting to the base station; in response to receiving the first control channel, transmitting a first signal to the base station via the first resource using a first cyclic prefix; receiving a second control channel indicating a second resource for transmitting to the second UE; and if at least one of a first timing advance for the first UE or a second timing advance for the second UE exceeds a pre-defined threshold, then transmitting, in response to receiving the second control channel, a second signal to the second UE via the second resource using a second cyclic prefix; wherein the second cyclic prefix is longer than the first cyclic prefix.