Patent ID: 9635629
Date: 2017-04-25
CPC Classifications: H04W

Claim:
1. A method of performing device-to-device (D2D) communication between a first user equipment and a second user equipment in a wireless communication system, comprising: providing a plurality of resource groups and a plurality of synchronization signals for use in the wireless communication system; setting first monitor time associated with sending data and second monitor time associated with receiving data; linking a first resource group among the plurality of resource groups to the first monitor time, the second monitor time, and a first synchronization signal among the plurality of synchronization signals; the first user equipment determining if the first synchronization signal is being transmitted by a third user equipment of the wireless communication system at the first monitor time and at the second monitor time during a first frame; and the first user equipment claiming the first resource group by broadcasting the first synchronization signal at the first monitor time during a second frame after determining that the first synchronization signal is not being transmitted by the third user equipment at the first monitor time and at the second monitor time during the first frame, wherein the second frame occurs immediately after the first frame.