Thesis Open Access

Optimization of Soft Handover for Addis Ababa UMTS Radio Access Network

Nigussie Beyene


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        <foaf:name>Nigussie Beyene</foaf:name>
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    <dct:title>Optimization of Soft Handover for Addis Ababa UMTS Radio Access Network</dct:title>
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    <dct:description>&lt;p&gt;Handover is an essential radio management technique of mobile communication to enable seamless communication while users move from one cell to another one. To mitigate impacts of interference on cell-edge users, third Generation (3G) supports soft handover where users can be simultaneously served by two or more cells, in addition to hard handover, where a user is served by only one cell. The number of soft handover users and their active cells determine the degree of soft handover overhead. The soft handover overhead data for the year 2018 of Addis Ababa 3G network is 87% average overhead, which is considerably beyond the maximum recommended value. This figure indicates the requirement to optimize the soft handover overhead using the soft handover related network parameters&amp;rsquo; configurations. In this thesis, soft handover overhead performance of the Addis Ababa 3G network is analyzed. The spatial distribution of the overhead is visualized using data collected from the network management system. Furthermore, optimization of soft handover overhead is done through fine-tuning window add, pilot power, and electrical antenna down tilt&lt;/p&gt;</dct:description>
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