Patent ID: 6240287
Filing Date: 2001-05-29
Classification: H04W

Abstract:
A method of preventing an overload of call processing capacity at a base station of a cellular wireless communication system, comprising:monitoring a level of call processing at the base station with respect to a maximum call processing capacity of the base station, wherein said call processing capacity includes processing of call handoffs, call originations and call terminations handled by the base station;setting a first call processing threshold which is less than the maximum call processing capacity of the base station;setting a second call processing threshold which is greater than the first call processing threshold but less than said maximum call processing capacity;reducing, in a first phase, a present handoff rate for user stations served by the base station when the monitored level of call processing exceeds the first threshold; andwhen the monitored level of call processing exceeds the second threshold,reducing, in a second phase, a present rate of at least one of the call originations and call terminations handled by the base station, while further reducing said handoff rate.