Title :
Improving the fault tolerance of GSM networks
Author :
Chang, Ming-Feng ; Lin, Yi-Bing ; Su, Shu-Chin
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A PCS network constantly tracks the locations of the mobile stations so that incoming calls can be delivered to the target mobile stations. In general, a two-level database system is used to store location information of the mobile stations. When the location databases fail, incoming calls may be lost. This article describes the standard GSM database failure restoration procedure which reduces the number of lost calls. Then we propose an efficient visitor location register (VLR) identification algorithm for the home location register (HLR) failure recovery procedure, which utilizes mobile station movement information to speed up the recovery procedure
Keywords :
cellular radio; database management systems; fault tolerant computing; land mobile radio; personal communication networks; telecommunication computing; telecommunication network management; telecommunication network reliability; tracking; GSM database failure restoration; GSM networks; HLR failure recovery procedure; PCS network; VLR identification algorithm; fault tolerance; home location register; incoming calls; location information storage; mobile station tracking; two-level database system; user information management; visitor location register; Base stations; Communication switching; Computer networks; Databases; GSM; ISDN; Mobile computing; Mobile radio mobility management; Personal communication networks; Switches;
Journal_Title :
Network, IEEE
