System and method for improved mobile communication admission and congestion control

Abstract

A wireless communication system is provided for improving the quality of service and capacity utilization by dynamically adjusting optimum transmission signal power levels in response to changes in transmission signal and mobile station characteristics, so as to maintain a system outage probability below a desired level. A code division multiple access (CDMA) mobile communication system improved control and capacity utilization are achieved by dynamically adjusting the admission control threshold and/or congestion detection threshold to compensate for variations in the characteristics of the signals and mobile station loading of a base station. In one embodiment, a CDMA base station and control system may include a transmission power detector or sampler coupled to a power control of a transceiver and a transmission power estimator. The power estimator may be a K'th moment estimator and be coupled to an admission control threshold estimator and a capacity estimator. The capacity estimator may be coupled to an admission and/or congestion controller. In general, the CDMA forward link admission control and congestion control mechanisms for admitting or releasing a mobile station from a base station cell operate to dynamically self-configure their admission control threshold and/or congestion detection threshold in order to maintain an outage probability below the desired level. In one embodiment, the average total base station transmission power of a sample set of recent system operation and the variability of the base station transmission power within the sample set are used to dynamically self-configure the system. Therefore, the present invention provides a more efficient method for obtaining optimum quality of service and capacity utilization based on determining a desired maximum outage probability and configuring the base station control system to dynamically self-configure its admission and/or congestion thresholds to meet the outage probability constraints.

Dependencies are inferred from the claim text.