System and method for aggregate overload control

Details System and method for aggregate overload control System and method for aggregate overload control

H - Electricity

04

Q

H04Q 7/36 (2006.01)

Patent

CA 2319895

A wireless communications system and method controls network load by selectively scaling aggregate base station transmit signals. In one implementation, aggregate in-phase (I) and quadrature (Q) channel transmit signals are multiplied by a scaling coefficient output by an aggregate overload controller based on load levels relative to a threshold. By scaling aggregate I- and Q-channel transmit signals when load level measurements indicate a high load situation, handoff control measurements made at mobile subscriber terminals, such as received signal strength from the base station, bit/frame error rates, and signal-to- noise ratio, will be affected, thereby prompting mobile subscriber terminals at the cell/sector boundaries to request handoff to an adjacent cell/sector. Thus, load is balanced between a number of cells/sector to increase network capacity and prevent overload without relying on a call admission/blocking scheme.

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