Patent ID: 7397818

Claim:
A method of determining and effectuating split positions between uplink and downlink bandwidth in a point to multipoint radio access system, wherein the system utilizes a time division duplex scheme on a frame by frame basis and with at least two quality of service classes, a first class for guaranteed services (RT) and a second class of best effort services (BE); wherein, within every frame a portion of bandwidth is devoted to uplink traffic and another portion to downlink traffic, and wherein a split between uplink and downlink bandwidth is controlled by a call admission controller (CAC), and wherein scheduling of traffic is performed according to a scheduling policy carried out by a medium access control (MAC) layer, said method comprising the steps of: said medium access control (MAC) layer monitoring the status of best effort (BE) uplink and downlink queues and averaging them during an observation period; for every observation period, said medium access control (MAC) layer evaluating a further movement of the split; and according to the evaluated split position, said medium access control (MAC) layer allocating resources frame by frame to user terminals and to a base station using its scheduling policy.