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| Analysis of Reversal GLR Failure Recovery Algorithm in 3G Mobile Networks |
| Jiang Hong①; Zhang Hong-wei② |
| ①Information engineering College, Southwest Science and Technology University, Mianyang 621010, China; ②China Unicom MianYang Branch, Mianyang 620000, China |
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Abstract In 3G mobile networks, when the location information of a roaming user in a Gateway Location Register (GLR) is incorrect or obsolete, the location tracking before recovery will fail which severely degrades system performance. Traditional location recovery algorithms needed to occupy a great many long-distance signaling circuit resources. In order to reduce occupation on long-distance signaling circuit and GLR failure recovery interval, a new algorithm, referred to as reversal GLR failure recovery algorithm, is proposed in this paper. The proposed algorithm fully uses corresponding information in Visited Location Register(VLR) to avoid long-distance signaling cost between GLR and Home Location Register(HLR). Through performance analysis, the algorithm is proved to be feasible.
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Received: 27 August 2005
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2007, Vol. 29 
