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MANET vs VANET | difference between MANET and VANET

This page compares MANET vs VANET and describes difference between MANET and VANET. The term MANET refers to Mobile Ad hoc Network where as VANET refers to Vehicular Ad hoc Network.

These networks are used for communication between following:
•between vehicles•between vehicles and road-side infrastructure.

MANET is the short form of Mobile AdHoc Network. In ad-hoc networks all the nodes are mobile in nature and hence they can be interfaced dynamically in arbitrary fashion.

As we know any wireless transmission has distance coverage limitation, wireless node will utilize its neighboring nodes to transmit the packet beyond its distance limitation. To overcome this limitation, MANET nodes require ad-hoc type routing protocols. They are of two types viz. table driven routing protocols and On demand routing protocols.

Following are the features of MANET network:
• Dynamic topologies
• variable capacity links
• Energy constrained operation
• Limited physical security

VANET is the short form of Vehicular Adhoc Network. It is subgroup of network of MANET type.

The routing protocols of MANET are not feasible to be used in the VANET network. If they are used then also they will not be able to deliver required throughput as it has fast changing adhoc network.

VANET hybrid network

In VANET, the communication nodes are moving on pre-defined roads as finalized initially.

The VANET architecture consists of three type of categories as mentioned below:
• cellular and WLAN network
• Pure Ad hoc (network between vehicles and fixed gateways)
• hybrid(combination of both infrastructure and adhoc networks), as shown in figure.

In the first type, fixed gateways and WiMaX/WiFi APs are used at traffic junctions to connect with the internet, to obtain traffic information and used for routing.

The VANET nodes are not subject to storage and power limitation.

Tabular difference between MANET and VANET

Following table mentions difference between MANET and VANET types.

Characteristics MANET VANET
Node Mobility Low High
Node Speed Lower (~ 6 Km/h) Medium to high (~ 20 to 100 Km/h)
Mobility Model Random Regular
Node Density Low High
Topology Change Slow Fast
Radio propagation model Close to Ground, LoS is not available for all cases Close to Ground, LoS is not available for all cases
Power consumption and network lifetime Energy efficiency protocols Not needed
Computational Power Limited High
Localization GPS GPS, AGPS, DGPS
Cost Inexpensive Costly
Bandwidth Hundred Kbps Thousand Kbps
Range Upto 100 meters Upto 600 meters

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