A wireless digital communication system includes a base station in
communication with a plurality of user equipment mobile terminals (UEs).
The system prioritizes the forwarding of blocks of downlink data to
designated ones of the UEs. The system employs adaptive modulation and
coding (AM&C) to achieve improved radio resource utilization and provides
optimum data rates for user services. Blocks of downlink (DL) data are
received by the base station which requests downlink (DL) channel quality
measurements only from those mobile terminals (UEs) with pending downlink
transmissions. The UEs respond to the request by measuring and reporting
DL channel quality to the base station, which then allocates resources
such that the UEs will make best use of radio resources. The base station
notifies the UEs of the physical channel allocation indicating the
modulation/coding rate and allocated slots followed by transmission of
blocks of downlink data which are transmitted to the UEs.