Analysis and Simulation of Wireless Ad-Hoc Network Routing Protocols
An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. Ad-hoc networks, characterized by dynamic topology. Each host moves in an arbitrary manner and routes are subjec...
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| 格式: | Thesis |
| 语言: | English English |
| 出版: |
2004
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| 主题: | |
| 在线阅读: | http://psasir.upm.edu.my/id/eprint/68/1/1000548973_t_FK_2004_20.pdf |
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| 总结: | An ad hoc network is a collection of wireless mobile nodes dynamically forming a
temporary network without the use of any existing network infrastructure or
centralized administration. Ad-hoc networks, characterized by dynamic topology.
Each host moves in an arbitrary manner and routes are subject to frequent
disconnection. During the period of route reconstruction, packets can be dropped. The
loss of packets will cause significant throughput degradation. A number of routing
protocols like Dynamic Source Routing (DSR), Ad Hoc On-Demand Distance Vector
Routing (AODV) and Destination-Sequenced Distance-Vector (DSDV. have been
implemented. In this project an attempt has been made using network simulator (NS)
to compare the performance of two on-demand reactive routing protocols for mobile
ad hoc networks: DSR and AODV, along with the traditional proactive DSDV
protocol, using more stressful parameters, such as a very high mobility, large number
of nodes and with a very heavy traffic loads.The simulation results show that at a
small to medium field area with a considerably large number of nodes, the tabledriven
DSDV protocol performs better than the On-demand protocols, AODV and
DSR at low mobility.While On-demand protocols, AODV perform very well at all
network conditions. While at large field area all the routing protocols performed
poorly due to large number of hops that needed for one node to communicate with
another and link breakage are likely to happens. Although DSR and AODV share
similar on-demand behavior, the differences in the protocol mechanics can lead to
significant performance differentials. The performance differentials are analyzed
using varying network load, mobility, and network size. The simulation results show
that On-demand routing protocol AODV and Table-driven routing protocol DSDV
can be used for most of ad-hoc applications delivering about 95% of data packets to
the destination nodes. These simulations are carried out based on the Rice Monarch
Project that has made substantial extensions to the NS-2 network simulator to run ad
hoc simulations.
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