Patent ID: 8811372
Filing Date: 2014-08-19
Classification: H04W

Abstract:
1. A method of operating a peer to peer wireless terminal to perform timing synchronization within a peer to peer communications network in a peer to peer configuration, comprising: receiving a first timing reference from a network broadcast signal source in another network which is a different type of network from said peer to peer communications network, said network broadcast signal source being one of a base station in an infrastructure network, a satellite transmitter, or TV transmitter; determining, based on the first timing reference, a sequence of timing synchronization time intervals; determining a symbol timing based on the first timing reference; choosing a fraction in at least one of the timing synchronization time intervals to transmit a first signal with the symbol timing; receiving at least a second signal during a non-chosen fraction of the at least one time interval, the second signal including a second timing reference; determining a composite timing reference value from timing references obtained from signals received from different devices; determining a timing adjustment based on the symbol timing and the second timing reference such that the symbol timing is to be delayed when the symbol timing is earlier than the composite timing reference value and the symbol timing is to be advanced when the composite timing reference value is earlier than the symbol timing; and adjusting the symbol timing based on the timing adjustment.