An alternative strategy for location update and paging in mobile networks

In mobile systems, the influence of mobility on the network performance must be strengthened, mainly due to the huge number of mobile users and the small of cells. This paper presents a profile-based strategy combined with a built-in memory method to reduce the signaling cost during the location update processes by increasing the intelligence of the location procedure. This strategy associates to each user a list of cells where it is likely to be with a given probability in each period of time. The list is ranked from to the least likely place where a user is found. When a call arrives for a mobile, it is paged sequentially in each location within the list. When a user moves between location areas in the list, no location update is required. The implementation of this strategy has been subject to extensive tests. The results obtained confirm the efficiency and the effectiveness of PBS to significantly reduce the costs of both location updates and call delivery procedures, in comparison with IS-41 and other strategies well-known in the literature.

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