Publication Date:
2014-10-26
Description:
In vehicular ad hoc networks (VANETs), the communication links are inherently unstable due tovehicles' mobility and various impairment of radio signal. Existing geographic routing protocolsoften choose the next hop according to the greedy forwarding, regardless of the link's quality andtransmission reliability. The successful packet delivery rate is decreased in non-ideal communicationlinks. Consequently, the reliability of data transmission is worse and the network throughput isdeclined. In this paper, we propose a routing protocol called link state aware geographic routingprotocol (LSGR) for VANETs. In LSGR, a routing metric called expected one-transmission advance(EOA) is contrived to improve the greedy forwarding algorithm by explicitly incorporating the linkstate and packet's advance. Routing with the EOA metric, one can improve the transmission efficiencyby diminishing transmission failures. Simulation results show that LSGR can achieve a higherthroughput and packet delivery rate than the geographic routing protocols that adopt the traditionalgreedy forwarding.
Print ISSN:
1687-1472
Electronic ISSN:
1687-1499
Topics:
Electrical Engineering, Measurement and Control Technology
,
Computer Science
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