Microcells deployment and their applications with the co-existing macrocell infrastructure

Pao Yue-kong Library Electronic Theses Database

Microcells deployment and their applications with the co-existing macrocell infrastructure

 

Author: Chan, Ying-sun
Title: Microcells deployment and their applications with the co-existing macrocell infrastructure
Degree: M.Sc.
Year: 1997
Subject: Cell interaction
Mobile communication systems
Cellular telephones
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Dept. of Electronic Engineering
Pages: 110, [4] leaves : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1420196
URI: http://theses.lib.polyu.edu.hk/handle/200/236
Abstract: The main focus of this thesis is on the multi-layer design of the microcells deployment and their applications with the co-existing macrocell infrastructure. This work has produced an understanding of the detailed application of new microcell architectures so that the number of mobile subscribers can be increased under the same limited frequency bands. Throughout the dissertation, an overview on the changed market situation is presented. New approaches and techniques are applied to the existing digital cellular communication system. This dissertation describes the design concept about the capacity gain in overlay-underlay hierarchy and the various approaches within the microcell framework. The key to the success of microcell deployment is that it is usually less than 500 meters in radius, thus requiring only low transmission power (i.e., less than 2 watts). The microcell techniques that allow higher re-use of frequencies, and smaller cells using conventional high-power (i.e., approximately 20 watts) cellular radio equipment (i.e., Base Transceiver Station) have been used. During the operations of the combined cell (i.e., overlay and underlay networks ), the frequency co-ordination, channel management and handoff must be noticed. To expand the user base, not only the suppliers face with technical queries to reduce interference as the increased capacity, but also operators must desire to increase capacity without degrading the quality of service. Finally, microcells embedded in cellular systems can extend the overall network capacity and improve coverage, performance, reduce the effects of congestion, fill in dead spots, and they are small in size and cost effective.

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