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Design and implementation of two-tier mobile ad hoc networks with seamless roaming and load-balancing routing capability

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6 Author(s)
Yuan-Ying Hsu ; Dept. of Comput. Sci. & Inf. Eng., Nat. Chiao Tung Univ., Hsin-Chu, Taiwan ; Yu-Chee Tseng ; Chien-Chao Tseng ; Chi-Fu Huang
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Due to its flexibility, mobile ad hoc network (MANET) has attracted a lot of attention recently. Most existing works, however, limit a MANET as a stand-alone network. In this paper, we propose a two-tier MANET by extending the connectivity of the MANET to the Internet. Some hosts in the MANET are equipped with cellular interfaces and are called gateways, which can provide Internet connections. Such extension would greatly improve the connectivity of MANET. To maintain seamless connectivity, we modify the mobile IP to make traversing private networks (i.e., NAT) of cellular networks possible. We also propose a load-balancing routing protocol to utilize the cellular interfaces of gateways, which are likely to be bottlenecks to the Internet. A prototype is implemented and performance results obtained from the testbed is reported.

Published in:

Quality of Service in Heterogeneous Wired/Wireless Networks, 2004. QSHINE 2004. First International Conference on

Date of Conference:

18-20 Oct. 2004