Patent ID: 9686055
Date: 2017-06-20
CPC Classifications: H04B,H04J,H04L,H04W,Y02D

Claim:
1. An apparatus to: select a portion of an uplink (UL) frame, used by a first User Equipment (UE), to establish a direct communication (D2D) between the first UE and one or more second UEs; generate timing information and synchronization source type information, wherein the timing information is used to synchronize the one or more second UEs with the first UE; transmit a synchronization signal comprising the timing information, wherein the timing information is included in the portion of the UL frame used by the first UE, and wherein the first UE is to act as a reference source in a local synchronization area; determine interference with a remote synchronization area that at least partially overlaps with the local synchronization area; and in response to the interference, autonomously change transmission of the synchronization signal to a different subchannel, timeslot or subframe.