Patent ID: 8270390

Claim:
A wireless communication system comprised of: a base station and one or more terminals, the wireless communication system carrying out wireless data communication by use of a first frequency band, wherein a wireless access system employs a centralized CSMA/CA and/or TDMA/TDD system as the wireless access system, and thus, the base station broadcasts a control signal at the first frequency band periodically to manage wireless data transmission of the one or more terminals; in addition to the first frequency band, the base station can allocate one or more frequency bands for the data transmission of the one or more terminals different from the first frequency band, wherein the control signal indicates the location of the one or more frequency bands which can be used; the wireless data transmission at the first frequency band and the wireless data transmission at the one or more frequency bands can be simultaneously carried out; a time synchronization of the wireless communication system is realized by the control signal transmitted from the base station at the first frequency band and received by each of the one or more terminals, and thus, based on the time synchronization between the base station and the one or more terminals, the wireless data transmission at the one or more frequency bands is time-synchronized with the wireless data transmission at the first frequency band; and at the one or more frequency bands, the control signal is not transmitted, wherein the control signal at the first frequency band comprises control data configured to manage wireless data transmission between the base station and the one or more terminals at the first frequency band, the control signal at the first frequency band being utilized instead of a control signal at the one or more frequency bands that is configured to manage wireless data transmission between the one or more terminals at the one or more frequency bands, the control signal at the first frequency band being utilized in synchronization of frames between the wireless data transmission at the first frequency band and the wireless data transmission at the one or more frequency bands, permitting the simultaneous wireless data transmission both on the first frequency band and on the one or more frequency bands.