Abstract
Location management, which consists of location registration and paging, is essential to provide mobile communication services to mobile stations (MSs). Since MSs riding on a public transportation system (TS) generates significant location registration signaling loads simultaneously when a TS with riding MSs moves between location areas (LAs), group location management was proposed. Under the group location management, an MS performs group registration when it gets on a TS and performs group deregistration when it gets off a TS. Then, only a TS updates its current location when it changes LA, on behalf of all riding MSs. In this paper, movement-based group location management using radio frequency identification (RFID) is proposed, where the MS’s getting on and getting off behaviors are detected using RFID and only location update of a TS is carried out if the number of crossed cells from the last updated cell exceeds a predefined movement threshold, on behalf of all riding MSs. Then, we develop an analytical model for the performance analysis of the movement-based group location management and analyze the effects of various parameters on the performance. The results show that the movement-based group location management has reduced signaling cost compared with movement-based individual location management, and optimal performance can be achieved by choosing appropriate movement threshold values.
Highlights
In mobile communication systems, location management, which consists of location registration and paging, is essential to provide mobile communication services to mobile stations (MSs) [1].In location registration, an MS updates its location information at location registers (LRs) when it changes location area (LA) consisting of a group of cells
We extended the zone-based group location management by considering movement-based location registration [20] and analyzed the performance of movement-based location registration based on simple exponential distribution for cell residence time and the same movement threshold values for both MSs and transportation system (TS)
Based on the cell information, the gateway mobile switching center (MSC) sends the paging request to all cells located within an area from the last updated cell of the MS to the cells of dM S -th ring, where dM S is defined as a predefined movement threshold for an MS via the serving MSC
Summary
Location management, which consists of location registration and paging, is essential to provide mobile communication services to mobile stations (MSs) [1]. Significant signaling loads are generated at cells located in the boundary of LAs. diverse traffic and mobility characteristics of MSs are not efficiently accommodated in static zone-based location management scheme. In the movement-based location registration scheme, an MS performs a location registration whenever it moves for a predefined movement threshold [7] from the last registered cell In these individual location management schemes, which manage the location information of an individual MS separately, significant simultaneous location registration signaling loads of MSs riding on a transportation system (TS) are generated when a TS with riding. Significant signaling loads are generated at the boundary cells of static LAs in zone-based location registration, and diverse traffic and mobility characteristics of MSs and TSs are not efficiently accommodated.
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