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Handover mechanisms in ATM-based mobile systems

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4 Author(s)
G. Karagiannis ; Centre for Telematics & Inf. Technol., Twente Univ., Enschede, Netherlands ; M. C. de Lignie ; J. de Bie ; I. G. M. M. Niemegeers

This paper presents two handover mechanisms that can be used in the access part of an ATM-based mobile system. The first handover mechanism, which is called “handover synchronised switching” is relatively simple and does not use any ATM multicasting or resynchronisation in the network. It assumes that there is sufficient time available such that all data and history information of the old path can be transferred to the mobile terminal (MT) before the actual handover to the new path takes place. It is possible that the time between a handover decision and the actual handover is too short to end the transmission on the old path gracefully (e.g., ending the interleaving matrix, ending transcoder functions, emptying intermediate buffers). A possible solution to this problem is given by the second handover mechanism, where multicast connections to all possible target radio systems (RAS) are used in the core network. This mechanism is called “handover with multicast support”

Published in:

Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE  (Volume:5 )

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