System and method for reverse link overload control

Details System and method for reverse link overload control System and method for reverse link overload control

Category

H - Electricity

Subcategory

04

Subsubcategory

Q

IPC codes

H04Q 3/64 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01)

Type

Patent

Patent number

CA 2320534

Description

A system and method for controlling call admission in a wireless communications network recursively estimates reverse link load levels as a function of changes in base station receive power and/or the number of mobiles served in the cell/sector. In one implementation, a call admission controller utilizes multiple load level estimating methods, whereby a first method estimates load as a function of changes in base station receive power and changes in the number of served mobiles. The call admission controller uses a second method to recursively update load level estimates as proportionally changing with number of users. The call admission controller may utilize a third estimate method as an accuracy check based on a changes in base station receive power measurements. The call admission controller outputs a call blocking command when load level estimates exceed a threshold to avoid cell/sector overload conditions and network instability.

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