Patent ID: 6470004
Filing Date: 2002-10-22
Classification: H04B,H04W

Abstract:
A wireless Asynchronous Transfer Mode (ATM) communication system transmitting and receiving data of ATM cells by a radio system employing Time Division Multiple Access (TDMA) system, comprising:a base station for assigning a data channel for a user who has requested connection establishment, for assigning a part of user channel being assigned to other user but not used all part of the user channel as an additional user channel when amount of data to be transmitted from said base station being detected to be too large to carry by said assigned user channel, and for transmitting a control channel in which slot positions of said additional user channel being indicated; and a terminal station for detecting use of additional user channel indicated in said control channel, and for receiving the data in designated slot positions of said additional user channel in addition to the data in the user channel assigned for own station, wherein said base station further comprising: data management means for detecting amount of data to be transmitted for each terminal station when commencing data communication with one of terminal stations, for allocating additional user channel, which has allocated to other terminal station but containing available portion not used, to said terminal station when an allocated user channel to said terminal station being not enough to carry amount of data to be transmitted to said terminal station, and for outputting user channel allocation information; and data assembling means for assembling slot position information of the additional user channel in a control channel, for assembling ATM cells to be transmitted to said terminal station in the allocated user channel and designated portion of the additional user channel, and for producing a TDMA frame including the control channels and user data channels to be transmitted to the terminal stations.