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Ferry replacement protocols in sparse MANET message ferrying systems

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4 Author(s)
Jeonghwa Yang ; Networking & Telecommun. Group, Georgia Inst. of Technol., Atlanta, GA, USA ; Yang Chen ; M. Ammar ; Chungkee Lee

The message ferrying (MF) scheme has been proposed as a strategy for providing connectivity in sparse partitioned ad hoc networks. A set of nodes, called ferries, are responsible for carrying messages for all nodes in the network. A ferry periodically moves around the deployed area along a pre-determined route and relays messages between mobile nodes which otherwise cannot communicate with each other directly. The MF scheme relies on the ferry to provide connectivity and is vulnerable to a single point of failure. Also, mobile nodes might take turns to be a ferry since they normally have limited resources. Therefore, ferry replacement is important for robustness in MF deployment. We propose two ferry replacement protocols: in the designation scheme, the ferry designates its successor; in the distributed election approach, nodes collaborate and elect one node among themselves as the ferry replacement. We evaluate the performance of these two replacement protocols through comprehensive simulation.

Published in:

IEEE Wireless Communications and Networking Conference, 2005  (Volume:4 )

Date of Conference:

13-17 March 2005