System and method for control of total overload

Application Number  00129216 Application Date  2000.09.28
Publication Number  1290081 Publication Date  2001.04.04
Priority Information   1999/9/29 US 09/407,882  
Applicant(s) Name  Lucent Technologies Inc.  
Inventor(s) Name  W.J. Levo  
Patent Agency Code  11038 Patent Agent  jiang shixun
AbstractA 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.