Position-based routing (PBR) provides efficient and scalable routing in ad hoc networks with frequent topology changes and is a strong candidate for vehicular ad hoc networks (VANETs). Like all other routing protocols, simple PBR does not specify a value of power for transmission to the next hop and most commonly a high value is chosen in order to assure correct reception, which results in unnecessary harmful interference to other nodes. Based on a model for wireless communication, a cross-layer approach is developed combining routing scheme and transmit power control, called power-aware PBR for VANETs, that improves overall sharing of bandwidth. The scheme is implemented in a software prototype, set up an experimental testbed and conducted experiments with vehicles on German highways. By comparison with simple PBR, is can be concluded that power-aware PBR achieves considerable saving of power without impairing the probability of reception.
On power-aware greedy forwarding in highway scenarios
Ein Beitrag zum vorwärts gerichteten, leistungsstarken Erfassen von Autobahn-Szenarien
2001
6 Seiten, 5 Bilder, 1 Tabelle, 13 Quellen
Conference paper
English
Greedy Routing in Highway Scenarios: The Impact of Position Faking Nodes
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