Patent ID: 7489673
Filing Date: 2009-02-10
Classification: H04B

Abstract:
1. A frequency hopping type wireless communication system in which a time division multiplexing operation is carried out, and a communication operation of the time-division-multiplexed communication signal is carried out while two, or more frequencies are switched between one communication counter party and the own wireless communication system, wherein: a first communication apparatus transmits control-purpose information which constitutes a reference in either a regular manner or an irregular manner by employing at least one slot within plural slots in a predetermined frame period; a second communication apparatus which constitutes a communication counter party of the first communication apparatus receives either a portion or all of the control-purpose information during a waiting operation, synchronizes timing of the frame and the slot with timing of the frequency hopping operation with respect to the first communication apparatus, and establishes a plurality of wireless links when the second communication apparatus commences a communication operation; the first communication apparatus superimposes both a communication-purpose signal and the control-purpose information used between both the first and second communication apparatus on one slot so as to establish a wireless link; and the second communication apparatus transmits the communication-purpose signal with respect to the first communication apparatus, while using only one wireless link selected from the plurality of wireless links in response to an environmental condition.