Patent ID: 8184038

Claim:
A method of wireless communication, comprising: transmitting, by a first node, a first set of pulses; receiving, at the first node, a second set of pulses, wherein at least one pulse of the second set is received after at least one pulse of the first set is transmitted and before at least one other pulse of the first set is transmitted; and determining a distance between the first node and a second node based on at least some of the pulses of the first set and at least some of the pulses of the second set, wherein: the first node receives at least a portion of a ranging preamble associated with the second set of pulses before transmitting an entire ranging preamble associated with the first set of pulses, and the determination of the distance is further based on the ranging preamble associated with the first set of pulses and the ranging preamble associated with the second set of pulses.