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A Proposal of Link Metric for Next-Hop
Forwarding Methods in Vehicular Ad Hoc
Networks
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指導教授:許子衡
報告學生:董藝興
教授
作者:OKADA, H.; TAKANO, A.; MASE, K.;
出處:CONSUMER COMMUNICATIONS AND
NETWORKING CONFERENCE, 2009. CCNC 2009.
6TH IEEE
Outline
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Introduction
Next-Hop forwarding method
Proposed Selection Scheme
Performance evaluation
Introduction
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Compared with topology-based routing protocols,
a
routing
protocol
using
GPS
position
information offers the possibility to alleviate
issues of scalability or control overhead.
A
next-hop forwarding method is a type of
position-based routing protocol.
Introduction
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The
easiest scheme is greedy forwarding, in
which the neighbor node closest to the
destination node is selected as the next-hop node.
This forwarding method requires the minimum
number of hops from the source node to the
destination node, but the forwarding distance of
one hop might be large.
Next-Hop forwarding method
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Next-Hop forwarding method
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Proposed Selection Scheme
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Expected Progress Distance
Expected transmission time(ETT)
S is the packet size
B is the transmission rate
ETX is the expected number of transmissions
Proposed Selection Scheme
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Where pf and pr are the packet error rates of
forward and reverse links, respectively.
Proposed Selection Scheme
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Performance evaluation
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Performance evaluation
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Performance evaluation
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Performance evaluation
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Performance evaluation
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Performance evaluation
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Performance evaluation
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