When mobile wireless ATM (Asynchronous Transfer Mode) networks, for example in airplanes or ships, move from one access point in a coverage area to another, it is desirable to preserve the active connections with their respective negotiated quality of service parameters. In order to achieve this, the connections are handed over to the new access point instead of dropping and reestablishing them.
In this thesis the issue of connection handover in mobile ATM networks is discussed. First an overview of ATM, mobile communications and wireless mobile ATM is given. Then the
concept of connection handover and its algorithms are outlined. A list of quality criteria is established. Message and data flow scenarios are given for multiple connection handover approaches. They are followed by a thorough investigation of connection handover performance according to the given quality criteria. A comparison of the different
handover approaches in terms of performance is made. Next, the influence of the network topology on the performance of the connection handover is investigated. Some conclusions are drawn from the overall investigations concerning connection handover.
By: Sonja Buchegger
Published in: RZ3159 in 1999
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