A Survey of Various Efficient and Secure Routing Protocols for VANETs
1. A Survey of Various Efficient and
Secure Routing Protocols for VANETs
Prepared By:
Abhijit Parmar
2. Contents
1. What is VANET?
2. Classification of routing protocols
3. Transmission strategies for packet forwarding
4. Other Routing Protocols
5. Conclusion
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3. What is VANET?
Vehicular Ad hoc Network (VANET) is a wireless
network that is formed between a collections of
cars connected by wireless links.
The main applications are Safety applications,
Traffic management & User applications.
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6. Proactive Routing Protocol
Proactive protocols allow a network node to use
the routing table to store routes information for all
other nodes.
Here each entry in the table contains the next
hop node used in the path to the destination.
The table must be updated frequently and
should be broadcast periodically to the
neighbors.
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7. Reactive Routing Protocol
Reactive routing protocols do not periodically
update the routing table when there is some data
to send.
Reactive routing protocols are applicable to the
large size of the mobile ad hoc networks which
are highly mobility and frequent topology
changes.
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8. Hybrid Routing Protocol
Hybrid protocol is a mixture of both proactive and
reactive protocols.
The hybrid protocol divides the network to many
zones to provide more reliability for route
discovery and maintenance processes.
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9. Delay Tolerant Network (DTN)
Protocol
In this network, all nodes help each other to
forward packets (store and forward scheme).
These nodes may have a limited transmission
range, so packets transmission will take large
delays.
DTN designed to perform efficiently in networks
with some characteristics:
i. Frequent disconnection communication,
ii. Large scale, long unavoidable delays,
iii. Limited bandwidth,
iv. Power constraints
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10. Non-Delay Tolerant Network
(Non DTN) Protocol
This type of protocol is only suitable for high
density network.
In these protocols, the node forwards its packet to
the closest neighbor to the destination.
Problem:- if there is no closest neighbor to the
current node.
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11. Hybrid Routing Protocol
Position routing protocol reduces control routing
overhead, it doesn't need to construct or
maintain a routing table because it only uses the
location information about the neighbors and
destination nodes, these issues made position-
based routing protocols scalable.
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12. Transmission Strategies for
Packet Forwarding
Delivery of information from a source to a
destination can be classified into three types:
1. Unicast protocols.
2. Broadcast protocols.
3. Multicast protocols.
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16. Other Routing Based
Protocols
Various other routing protocols are as follows
1. Greedy Perimeter Coordinator Routing or Greedy
Source Routing Protocols(GPCR/GPSR).
2. Junction Based Multipath Source Routing
Protocols(JMSR).
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17. GPCR/GPSR Protocol
Greedy Perimeter Coordinator Routing,
Geographic Source Routing or Connectivity-
Aware Routing, use only one single route from the
source to destination.
GPSR handles each packet separately.
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18. JMSR Protocol
JMSR is characterized as junction-based because
it is a geographic or position-based routing
protocol, where the junctions’ positions are of
much higher importance than the positions of the
nodes themselves.
Packet forwarding is handled by the nodes within
the junctions.
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19. Conclusion
The study of different VANETs routing protocols,
help us to know which protocols is effective to be
used. The study help us to overcome the problems
such as low communication overhead, security,
etc.
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