Patent ID: 6865169

Claim:
A cellular wireless internet access system comprising: a plurality of portable subscriber terminals each having a directly attached antenna for communicating in a predetermined frequency band with a predetermined nearby cellular base station; a plurality of cellular base stations each transmitting and receiving in said predetermined frequency band at a single frequency with a predetermined said plurality of said subscriber terminals; and means for operating said base station on a small frequency allocation obtainable anywhere within the designated frequency band using a single frequency channel of varying bandwidth between 6 and 24 MHz using different spread spectrum transmission chip rates; and means for operating said base station in a time-division-duplex mode to enable said transmitting and receiving at said single frequency channel thus avoiding the need for separate channels spaced apart for transmit and receive and including means for allocating the ratio of time for transmitting and receiving on a predetermined basis said time division as a function of expected traffic demand; means for providing high net data rates of 1.5-3.0 Mbps using a plurality of data bearer subchannels on said single frequency channel, orthogonal downlink spreading codes for CDMA transmission, and successive interference cancellation or simultaneous uplink spreading codes.