Effects of user mobility on handoff performance in a hierarchical cellular system

TitleEffects of user mobility on handoff performance in a hierarchical cellular system
Publication TypeConference Paper
Year of Publication1995
AuthorsHuang, W., and V. K. Bhargava
Conference NameElectrical and Computer Engineering, 1995. Canadian Conference on
Pagination551 -554 vol.1
Date Publishedsep.
Keywordsanalytical models, call attempts probability, handoff performance, handoff rate minimisation, hierarchical cellular overlays, hierarchical cellular system, imperfect speed estimation, land mobile radio, mobile stations, personal communication networks, personal communication system, radio spectrum management, telecommunication network management, telecommunication traffic, threshold speed, traffic, traffic management, user mobility

A personal communication system with hierarchical cellular overlays is described. Two strategies for traffic management are considered and compared. In strategy 1, the mobile stations are divided into two groups based upon their speed and then are served by different layers to minimize the handoff rate. In strategy 2, the mobile stations may enter either a layer regardless of their speed. It is shown that the probability of call attempts not completed is much smaller for strategy 1 than for strategy 2. We also discuss how to determine the threshold speed to keep the traffic balanced between the two layers. Analytical models are proposed to study the performance of the strategies. It is also found that the performance of strategy 1 is insensitive to imperfect speed estimation


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