Biomedical Engineering Reference
In-Depth Information
NP-AOMDV, throughput, End-To-End delay, routing control overhead com-
pares with the well-known AOMDV.
8. Jyoti Jain et al. [
10
], MANET is a wireless self-organized distributed network.
This chapter gives a general survey of research on local repair of link, if it is
broken during communication for MANET and proposes a new local repair
scheme in order to make up the deficiency of the existing local repair schemes.
The improved local repair scheme concerns about the over head requirement and
end-to-end delay in transmission. Nodes are required to keep the next two-hop
node address for each route entry in routing table. During local repair, the
repairing node uses Ant algorithm for finding new route for next-to-next node in
the link considering that other part of the link is already in existence. Reduced
size of F-ANT and B-ANT will give significant reduction in overhead. In this
case, repairing node not only tries to discover the route to the destination node of
data packet, but also attempts to establish the route to its downstream node (i.e.,
the next hop node). The proposed algorithm will be highly adaptive, scalable,
and efficient and mainly reduces end-to-end delay in high mobility cases.
Problem Occurs
By all the recent work done by the researchers in field of the AODV routing
protocols will increase the performance of the AODV routing protocols to a great
extent. But despite of that if nodes or links fails then this performance will be
going to suffer a lot [
4
]. There are several points that needs to be considered which
degrades the performance of the AODV routing protocols when nodes or links
fails they are [
11
]:
1. Suppose nodes or links fails then error message is sent back to the source this
will activate the source nodes to resend the data back to destination and this
will take too much time to perform the whole procedure again.
2. Time consuming [
4
].
3. Traffic congestion increases as same packet is send again and again.
4. The effect of traffic congestion will pay impact on the performance/throughput
of AODV system due to resending of same packet will cause other nodes
waited to send data.
5. The security [
2
] of AODV will be based on one-way hashed, two-hashed, and
digital signature. All the three security procedure consist of several steps,
several inbuilt functions that need to be applied, extensive procedure needs to
be applied before sending and receiving the packet. Now suppose if nodes or
links fails so all procedure, steps, inbuilt function needs to be applied again to
same packet.
Search WWH ::
Custom Search