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Route Handoff in Mobile ad hoc Networks
Mobile ad hoc networks are characterized by multi-hop wireless links, absence of any cellular infrastructure, and frequent host mobility. Design of efficient routing protocols is a challenging issue in such networks. Transmissions of packets are impaired by radio link fluctuations. Thus, in this paper an enhanced, channel adaptive routing protocol extensions to a multipath routing protocol known as Ad hoc On-Demand Multipath Distance Vector routing protocol, to accommodate channel fading is introduced. The resulting protocol is referred to as Channel Aware-Ad hoc On-Demand Multipath Distance Vector routing protocol. This routing protocol is quite suitable that uses the channel average nonfading duration as a routing metric to select stable links for path discovery. By exploiting channel state information, it applies a preemptive handoff strategy to maintain reliable and stable connections. Paths can be reused when they become available again, rather than simply regarding them as useless. We provide theoretical expressions for network performance measures, as well as the differences in performance between the two routing protocols mentioned above.
Keywords
Routing Protocols Ad Hoc Networks, on Demand Routing, Channel State Dependent, Adaptive.
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