Patent ID: 7257098
Filing Date: 2007-08-14
Classification: H04W

Abstract:
1. A wireless communications system comprising: a plurality of communications station units; and a base station unit operable to wirelessly communicate with the communications station units, wherein each of the communications station units is operable to wirelessly communicate with the base station unit, each of the communications station units is assigned to one of a plurality of groups that perform at least one of receiving and sending in a same communication time band, each of the groups having a different communication time band for downlink communication and uplink communication, the downlink communication and the uplink communication between the base station unit and the communications station units being performed with time-division multiplexing regarding each of the groups, and, at a time of group assignment, a total amount of sending and a total amount of receiving are adjusted for each of the groups based on a traffic situation of each of the communications station units, the base station unit comprises: each of the communications station units comprises: the traffic situation detection unit is to detect a number of times that a data send request is received from each of the communications station units during a group composition update time period as a usage situation of send channels and detect a number of times that data sending is performed to each of the communications station units during the group composition update time period as a usage situation of receive channels, and the group assignment unit is to take a value found by subtracting the number of times that the data send request is received from the number of times that the data sending is performed for each of the communications station units to be a send/receive state number of the respective communications station unit, assign the communications station unit with a largest send/receive state number and the communications station unit with a smallest send/receive state number to the same group, and repeat, among the communications station units excluding the assigned communications station units, the assignment of the communications station unit with the largest send/receive state number and the communications station unit with the smallest send/receive state number to a same group that is different than any group having communications station units previously assigned thereto until all of the communications station units are assigned to the groups.