DYNAMIC BANDWIDTH ALLOCATION FOR MULTIPLE ACCESS COMMUNICATIONS USING BUFFER URGENCY FACTOR

摘要

A.technique for providing high speed data service over
standard wireless connections via an unique integration of
protocols and existing cellular signaling, such as is available
with Code Division Multiple Access (CDMA) type systems through
more efficient allocation of access to CDMA channels. For
example, when more users exist than channels, the invention
determines a set of probabilities for which users will require
channel access at which times, and dynamically assigns channel
resources accordingly. Channel resources are allocated according
to a buffer monitoring scheme provided on forward and reverse
links between a base station and multiple subscriber units. Each
buffer is monitored over time for threshold levels of data to be
transmitted in that buffer. For each buffer, a probability is
calculated that indicates how often the specific buffer will need
to transmit data and how much data will be transmitted. This
probability takes into account the arrival rates of data into the
buffer, as well as which thresholds within the buffer are
exceeded, as well as which resources in the form of channels are
already allocated to the subscriber unit.