Mesh Based Multicast Routing in MANET - Copy

8/22/2019 Mesh Based Multicast Routing in MANET - Copy

1/18

MESH BASED MULTICAST

ROUTINGIN MANET :

STABLE LINKAPPROACH

SHUBHAM MANDAL

1JS09IS059


2/18

ABSTRACT The multicast mesh is constructed by using route

request and route reply packets with the help of

multicast routing information cache and link stability

database maintained at every node.

The stable paths are found based on selection of stable

forwarding nodes that have high stability of link

connectivity.

Mesh maintenance is done to avoid link failures.


3/18

INTRODUCTION An ad-hoc network is self-organizing and adaptive. Mobile Ad Hoc Networks

(MANETs) has become one of the most prevalent areas of research in the recent

years because of the vulnerabilities .

MANET is the new emerging technology which enables users to communicate

without any physical infrastructure regardless of their geographical location.

The mobile ad hoc networks (MANETs) do not have fixed network

infrastructure, nodes can act as both host and router, nodes may be mobile,

nodes may have limited resources, limited battery life and they have capability

of self organization.


4/18

MANET MULTICAST ROUTING

PROTOCOL

These are the properties which MANET should

possess :

Power efficient

Security

QoS

Reliability

Avoid overhead


5/18

MANET VULNERABILITIESLack of centralized management

Cooperativeness

Dynamic topology

Limited power supply

Adversary inside the network

No predefined Boundary


6/18

CLASSIFICATIONOF ROUTING

PROTOCOLSFORMANET Proactive Routing Protocols

Reactive Routing Protocols

Hybrid Routing Protocols

Unicast Routing Protocols

Multicast Routing Protocols

FIRST CRITERIA SECOND CRITERIA


7/18

Tree based

Multicast ad hoc on-demand distance vector routing

protocol(MAODV)

Ad hoc multicast routing utilizing increasing ID-

number protocol(AMRIS)

Mesh based

On demand multicast routing protocol(ODMRP)

Dynamic core based multicast protocol(DCMP)

Neighbor supporting ad hoc multicast routing(NSMP)


8/18

LINKSTABILITY BASED MULTICASTROUTING

Mesh creation through the route request (RR)

packets and route reply (RP) packets,

Finding stable routes between source to

destination by selecting stable forwarding nodes

(SFNs) using link stability metric,

Mesh maintenance and handling link failures.


9/18

CONTROL PACKETS

Route Request Packets

Route Reply Packets

Route Error Packets

The fields of RR packet are as follows:

Source address

Multicast group address

Sequence number

Route Request flag

Previous node address

Power

Antenna gain


10/18

LINKSTABILITY DATABASE

Each node maintains a link database information which

helps in establishing and maintaining destinations.

It maintains the following parameters:

Node ID

Power Level

Distance

Link quality

Stability factor


11/18

MULTICAST MESH CREATION Multicast mesh creation involves two phases:

Request phase Reply phase

Request Phase: A source finds the multicast routes to its receivers by using

RR packets.

fig1. Route request path from S to R1 and R2


12/18

Reply phase : In reply phase, RP packet is generated at a multicast receiver

after receiving a RR packet.

fig2.Reply paths from R1 to S fig3. Reply paths from R2 to S


13/18

Finally, the created mesh between source Sand multicast receiversR1 and

R2 with x and y as forwarding nodes is shown in figure 4

fig4. Mesh created between source and receivers R1 and R2


14/18

STABLE PATH FINDING INA MESH

In LSMRM, SFN selection among all forwarding nodes in the mesh is done

by a forwarding node by checking higher value of stability factorSij in its

MRIC.

fig5. SFN selection from R1 fig6. SFN selection from R2


15/18

MESH MAINTENANCE

LSMRM detects two types of link

failures: Link failure between SFN nodes

Link failure between a multicastsource/receiver and a SFN


16/18

MANET APPLICATION Military Battlefield

Commercial Sector

Local Level

Personal Area Network (PAN)


17/18

CONCLUSION

The stability based multicast routing scheme in MANET

finds the multicast routes to receivers by using route

request and route reply packets with the help of routing

information maintained in MRIC and link stability

parameters maintained in link stability database on every

node in a MANET.

This scheme has significant improvement in terms of

reliability, security, QoS, control overhead.


18/18

Mesh Based Multicast Routing in MANET - Copy

Documents

Transcript of Mesh Based Multicast Routing in MANET - Copy