Overload control for an integrated MSC/HLR switch
AssigneeNortel Networks Limited
InventorsMadhusudham Vudali, Steven W. Racz, Stephen Bird, Imran Rehman, Kalyan Basu
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Abstract
An integrated MSC/HLR switch accommodates overloads by throttling peripherals during MSC overload conditions, and halting TCAP messages and throttling peripherals during HLR overload conditions.
Claims19
An integrated Mobile Switching Center (MSC).backslash.Home Location Register (HLR) switch receiving MSC and HLR messages, the switch comprising:
- HLR overload detect means for generating an HLR overload condition signal in response to the detection of an HLR overload condition;
- MSC overload detect means for generating an MSC overload condition signal in response to the detection of an MSC overload condition;
- and
- throttling means, responsive to the HLR overload condition signal and MSC overload condition signal, for signaling a need for reducing the number of MSC messages received by the switch.
In an integrated Mobile Switching Center (MSC).backslash.Home Location Register (HLR) switch receiving MSC and HLR messages, a single controller comprising:
- HLR overload detect means for generating an HLR overload condition signal in response to the detection of an HLR overload condition;
- MSC overload detect means for generating an MSC overload condition signal in response to the detection of an MSC overload condition;
- and
- throttling means, responsive to the HLR overload condition signal and MSC overload condition signal, for signaling a need for reducing the number of MSC messages received by the switch.
A method for preventing Home Location Register (HLR) overload conditions in an integrated Mobile Switching Center(MSC).backslash.HLR switch receiving MSC and HLR messages, the method comprising the steps of:
- detecting an HLR overload condition in the switch;
- detecting an MSC overload condition in the switch;
- generating an HLR overload condition signal in response to a detected HLR overload condition;
- generating an MSC overload condition signal in response to the MSC overload condition;
- and
- signaling a the need for reducing the number of MSC messages received by the switch upon generation of the HLR overload condition signal and MSC overload condition signal.
Dependencies are inferred from the claim text.