Approaches to the Modeling of Personal Communication Systems

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In this paper, the effects of the speed on the user's and outside observer's points of view of the overlapping region in a mobile cellular Personal Communication Network environment are discussed.In this context, two different methods of assignig priorities to the regions under consideration, actual and differential methods, are first considered through which the handover issue is specified in an n-dimensional space in order to analytically describe an outside observer's point of view of a given Personal Communication System(PCS).Based on these developments, an equivalent queueing model of the proposed location update tree structures is constructed, and it is shown how the performance of the queueing model is dependent on the users' population and speed.The construction of the equivalent queueing model is based on the partition of the communication domains of the Base Stations(BSs)into disjoint sub-regions corresponding to overlapping and non-overlapping regions, arrival characteristics of the location update requests, and the queueing disciplines involved for processing of location update requests.Then, based on the queueing results, the location update tree structure as well as static and dynamic channel allocations are further described using product spaces, as well as a combinatorial point of view, and a users'point of view of communications domain.In particular, the importance of stateposition probabilities and their role in the modeling of users with different speed characteristics are shown.Finally, a new channel allocation approach for high-speed users is proposed, and the probability of overload is analytically expressed.
社団法人電子情報通信学会の論文
1998-05-25

Approaches to the Modeling of Personal Communication Systems

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