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Overcoming fragmentation in mobile Ad Hoc networks

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2 Author(s)
Linda Briesemeister ; DaimlerChrysler Research and Technology, Alt-Moabit 96a, 10559 Berlin, Germany ; Günter Hommel

We present an approach to multicast messages among highly mobile hosts in ad hoc networks. We suggest a new definition of a multicast that suits the special needs of inter-vehicle communication: rather than explicit identification, a multicast group is defined implicitly by location, speed, driving direction and time. As an example, we study a road accident that is reported to nearby vehicles. We focus on sparse deployment of the system which is likely to occur soon after the system is introduced to the market. In this state, the resulting ad hoc network tends to be disconnected. We tailor the proposed algorithm to overcome this problem of network fragmentation. Simulations show us the quality of the proposed protocol by measuring how many vehicles inside a multicast area are informed in time under various conditions.

Published in:

Journal of Communications and Networks  (Volume:2 ,  Issue: 3 )