Patent ID: 6240077
Filing Date: 2001-05-29
Classification: H04J,H04W

Abstract:
A station apparatus coupled to a wireless local network of subscriber units for providing two-way communications, the station apparatus comprising:a receiving circuit for receiving at least wireless local inbound data from the subscriber units, the wireless local inbound data being transferred using a Frequency Division Modulation Access (FDMA) technique;a transmit circuit coupled to the receiving circuit, the transmit circuit transmitting at least wireless local outbound data to the subscriber units, the wireless local outbound data being transmitted using a Time Division Modulation Access (TDMA) technique;a Radio Frequency (RF) antenna coupled to the receive and transmit circuits, the RF antenna radiating and receiving at least the local inbound and outbound data; anda first modulator-demodulator (modem) circuit coupled to the receive and transmit circuit, the first modem circuit demodulating local inbound data and modulating local outbound data;wherein under the implemented FDMA technique, a carrier frequency band is allocated to each subscriber unit such that the carrier frequency band is segmented into sub-frequencies for carrying inbound data, the data rate carried within each sub-frequency is varied to accommodate a bandwidth requirement, wherein under the implemented TDMA technique, the local outbound data is transmitted as a plurality of slots in a time sequence such that each slot contains data designated for a particular subscriber unit, the number of the plurality of slots is varied to accommodate a bandwidth requirement of a communication application;wherein the receive circuit together with the transmit circuit performing dynamic channel selection and bandwidth allocation.