Patent ID: 7545777

Claim:
A communication method in a communication system for performing communication between a base station and terminal stations, comprising the steps of: transmitting, from each terminal station, a first signal; performing, in the base station, a timing acquisition of the first signal from each terminal station and transmitting first difference information for coarse adjustment which indicates a phase difference between the first signal and a reference phase; generating, in each terminal station, an orthogonal signal having a phase set in accordance with the first difference information and transmitting a second signal using the generated orthogonal signal; performing, in the base station, a tracking of the second signal from each terminal station and transmitting a second difference information for fine adjustment between the second signal and the reference phase; and setting, in each terminal station, a delay amount of a delay circuit in accordance with the second difference information, wherein the delay circuit is between an antenna of each terminal station and a generator means for generating the orthogonal signal, wherein the first difference information is input to the generator means and the second difference information is input to the delay circuit.