Patent ID: 7577167

Claim:
A method for adaptive transmission timing control, comprising: transmitting a pilot signal with a predetermined signal pattern from a first wireless communication device to a second wireless communication device, by the second wireless communication device, calculating as a delay profile a correlation electric power of a received signal and the pilot signal for a given time range, calculating based on this delay profile a transmission timing offset value to be set in the first wireless communication device, and communicating the transmission timing offset value to the first wireless communication device, by the first wireless communication device, offsetting its own transmission timing based on the transmission timing offset value communicated by the second wireless communication device, wherein a limit is put on the transmission timing offset amount applied in a single transmission timing control iteration, and the second wireless communication device, along with setting the transmission timing offset value such that the main component of the delay profile calculated from the pilot signal transmitted with offset transmission timing falls within the time range of when the current delay profile was calculated, shifts the time range for calculating the next delay profile such that a delay profile calculated from the pilot signal transmitted with offset transmission timing falls within the shifted range, starting at the earliest component.