Patent ID: 6407993
Filing Date: 2002-06-18
Classification: H04L,Y02D

Abstract:
A method for transmitting and receiving signals between a primary station and a plurality of secondary stations in a single downlink frame, said method comprising the steps of:a) receiving first signals at said primary station from said secondary stations on an uplink; b) estimating the quality of each of said received uplink signals at said primary station; c) individually selecting modulation and coding schemes at said primary station in accordance with said estimated signals received on said uplinks for each of said secondary stations; d) modulating second signals according to selected modulation and coding schemes for each of said secondary stations; and e) transmitting said selectively modulated and coded second signals to each of said secondary stations on a single downlink frame, said downlink frame including a frame structure having a header for said frame and a data burst for each modulated second signal for each secondary station, said header providing information enabling each secondary station to locate its respective data burst within the frame structure.