Method and apparatus for controlling application processor occupancy based traffic overload
AssigneeLucent Technologies Inc.
InventorMirko Djuric
Life of this patent
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Abstract
This invention relates to a method and apparatus for controlling application processor occupancy based traffic overload. More particularly, the invention is directed to a system to maintain call processing related traffic below a predefined threshold in application processors that are typically incorporated into communication networks.
Claims10
A method for controlling call traffic in an application processor of a communication network, the network including microcells communicating with the application processor which is also connected to other portions of the network, the application processor comprising a central processing unit having a total load capacity of which at least a portion is uncontrollable and a plurality of radio cluster servers communicating with the microcells, the method comprising steps of:
- monitoring a number of call requests to the radio cluster servers from the microcells;
- determining a total load of the central processing unit based on the number of call requests and the uncontrollable portion;
- determining whether an overload condition exists based on the determining of the total load;
- determining a first acceptance rate for the call load if the overload condition exists;
- setting a second acceptance rate approximately equal to 100% for the call load if the overload condition does not exist;
- determining a single splitting sequence for the application processor based on one of the first and second acceptance rates;
- and,
- determining whether call requests are accepted or rejected based on the splitting sequence.
A method for controlling called traffic in an application processor of a communication network, the network including microcells communicating with the application processor which is also connected to other portions of the network, the application processor comprising a central processing unit having a total load capacity at least a portion of which is uncontrollable and a plurality of radio cluster servers communicating with the microcells, the method comprising steps of:
- (a) measuring call traffic in a first time interval;
- (b) calculating CPU occupancy for the first time interval based on the measured called traffic and the uncontrolled portion of the CPU load;
- (c) calculating a first acceptance rate for the first time interval based on the CPU occupancy;
- (d) applying the first acceptance rate for a second time interval;
- (e) estimating CPU occupancy for the second time interval;
- (f) determining if an overload condition exists based on the estimated CPU occupancy for the second time interval;
- (g) calculating actual CPU occupancy for the second time interval if the overload condition exists;
- and,
- (h) calculating a second acceptance rate for the second time interval based on the actual CPU occupancy if the overload condition exists.
An apparatus comprising:
- (a) means for measuring call traffic in a first time interval;
- (b) means for calculating CPU occupancy for the first time interval based on the measured called traffic and the uncontrolled portion of the CPU load;
- (c) means for calculating a first acceptance rate for the first time interval based on the CPU occupancy;
- (d) means for applying the first acceptance rate for a second time interval;
- (e) means for estimating CPU occupancy for the second time interval;
- (f) means for determining if an overload condition exists based on the estimated CPU occupancy for the second time interval;
- (g) means for calculating actual CPU occupancy for the second time interval if the overload condition exists;
- and,
- (h) means for calculating a second acceptance rate for the second time interval based on the actual CPU occupancy if the overload condition exists.
Dependencies are inferred from the claim text.