A Novel Group Location Management Scheme Based on Route Information of Public Transportation System

Yun Won CHUNG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E94-B   No.2   pp.477-483
Publication Date: 2011/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.477
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network Management/Operation
Keyword: 
location management,  location registration,  paging,  group,  transportation system,  

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Summary: 
In group location management, when a transportation system (TS) with mobile stations (MSs) changes location area (LA), only a single group location update by the TS is needed, instead of multiple individual location updates by MSs riding on the TS. Therefore, group location management significantly reduces location update signaling of the current individual location management. In this paper, we further improve the conventional group location management, by paging cells containing the route of public TS within an LA only, if an incoming call arrives at an MS riding on the TS, based on the observation that public TS, such as bus, subway, and train, follows a fixed route; its movement is not random. The performance of the proposed scheme is analyzed in terms of total signaling cost based on the modeling of public TS route. Numerical results reveal that the proposed scheme significantly outperforms the conventional scheme from the aspect of total signaling cost, at the expense of small network overhead due to the additional queries needed to acquire public TS route information.