Patent ID: 8175048

Claim:
A multi-hop wireless communication system including a wireless base station and a plurality of wireless terminals, each of the wireless terminals performing wireless communication through a multi-hop route formed directly or through at least one other wireless terminal with the wireless base station, the multi-hop wireless communication system comprising: a time signal synchronizer which synchronizes a time signal generated by a timer device included in each of the wireless terminals; and an active timing setting unit which sets a different active timing for each multi-hop route to wireless terminals located on each multi-hop route, wherein each of the wireless terminals monitors the time signal of the timer device included in the wireless terminal and activates wireless communication of the wireless terminal when it is detected that the time signal matches an active timing set in the wireless terminal, and wherein assuming that the number of multi-hop routes is N, a multi-hop route number is n (n=1˜N), and an active timing period is ACT-P, the active timing ACT-Tn of the multi-hop route number n is expressed by the following equation: ACT- Tn =ACT- T +(ACT- P/N )*( n− 1).