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Mobile IP for Mobile Ad hoc Networks Mobile IP for Mobile Ad hoc Networks

Mobile IP for Mobile Ad hoc Networks - PowerPoint Presentation

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Mobile IP for Mobile Ad hoc Networks - PPT Presentation

GROUP 9 Sridivya Rapuru Sravani Singirikonda Vikram Siripuram Rishi Remesh Ranjini Ad Hoc Network Reactive On Demand Network Does not require a central base station Temporary network connection for single session ID: 830385

network hoc nodes mobile hoc network mobile nodes internet networks mipmanet routing access aodv node manet demand protocols hop

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Presentation Transcript

Slide1

Mobile IP for Mobile Ad hoc Networks

GROUP - 9

Sridivya Rapuru

Sravani Singirikonda

Vikram Siripuram

Rishi Remesh Ranjini

Slide2

Ad Hoc Network

Reactive (On Demand) Network

Does not require a central base station

Temporary network connection for single session.

Slide3

AODV – Ad Hoc On Demand Distance Vector

Issues arise when Ad Hoc networks integrated with internet.

Pure wireless communication also has limitation in that radio signals are subject to interference and radio frequency higher than 100 MHz rarely propagate beyond line of sight.

MIPMANET resolves some of the major issues and concerns in this case by :

Providing multi-hop wireless network.

Slide4

MANET – Internet Access

Issues arise when Mobile Ad Hoc networks integrated with internet :

Pure wireless communication also has limitation in that radio signals are subject to interference and radio frequency higher than 100 MHz rarely propagate beyond line of sight.

MIPMANET resolves some of the major issues and concerns in this case by :

Providing multi-hop wireless network.

Slide5

MANET – Internet Access

Routing and Addressing

Keeping track of internet host is not required as it is a temporary connection.

Ad hoc network does not need to have a link layer connection between it’s nodes.

Dynamic routing protocols seem to be more efficient in

adhoc

networks.

Slide6

Issues with Multi-Hop Communication.

link- layer connectivity is absent in ad hoc networks.

Multi-Hop communication is used in forwarding packets.

Ad Hoc network routing protocol is used.

PROBLEMS :

Broadcast cost will be high

Overhead in movement detection.

Slide7

Issues with On-Demand Routing

When Mobile IP is made to operate in a on-demand (Reactive) it leads to some negative affects :

Visiting nodes have less information about foreign agent’s existence .

Network suffers flooding from agent discovery and solicitation messages from nodes that do not use mobile IP.

Slide8

Types of Ad hoc Networks

Quasi- Static Ad hoc Network :

Nodes are portable or static

Consists of many sensors spread in geographical area

Sensors are used for handling mobile communication , processing signals and transferring data

Low setup and administration cost

eg

: Sensor Networks

Slide9

Types of Ad hoc Networks

Mobile Ad hoc Network (MANET):

Nodes move relatively fast as the entire network is mobile

Network topologies are dynamic

Each device acts as a router for transferring traffic

Types of MANETS :

Vehicular Ad hoc Network (VANET)

Intelligent Vehicular Ad hoc Network (In VANET)

Internet Based Mobile Ad hoc Network (iMANET)

Slide10

Advantages of MANET

Self organizing and adaptive

Supports peer to peer communications

Reduced cost

Can be easily deployed

Less dependent on infrastructure

Supports peer to remote communication

Slide11

Applications of MANET

Military battle field : maintain network information between military personals’, vehicles and headquarters.

Emergency Services

Education : When meetings or lectures are conducted

Personal Area Networks

Information Services : location dependent and time dependent services

Slide12

MIPMANET

Goal is to provide Internet access to nodes in ad hoc networks.

Uses Mobile IP FA’s as access points to internet.

Ad hoc routing protocol is used to deliver packets

.

AODV,DSR,DSDV etc. are some of the routing protocols that can be used between FA and VN.

Slide13

Protocols like AODV,DSR are on demand routing protocols.(which looks for a route upon demand to send a packet).

DSR uses source routing while AODV doesn’t. Thus, AODV avoids the problems in DSR.

AODV is reactive(on demand) and is more widely used.

AD HOC ROUTING PROTOCOLS

Slide14

In our networks

VN are mobile nodes.(they keep moving)

topology of the networks keep changing frequently.

More efficient to use protocols that can find the routes

(FA

 VN

) only when there is a packet to send.

AODV is one protocol which serves the same purpose.

AODV BETWEEN FA & VN

Slide15

MIPMANET WORKS AS:

Nodes in Ad hoc network use home address to access internet.

To send packet to a node on internet first tunnel the packet to registered FA.

To receive packet from host, it is first routed to FA and FA then delivers it to the Mobile Node.

Slide16

Advantages of having FA as Access Point

Easy to provide internet access to all nodes in ad hoc network using single COA(address of FA).

Nodes can have internet access in any network as long as there exists FA in the network.

Node can be reached in the network using it’s home address registered with FA.

Slide17

TUNNELING

Adding tunneling to MIP MANET enables to use ad hoc routing protocols like AODV,DSR etc.

Packets with destination address is not in ad hoc network are tunneled to FA.

Only registered VN have the address of FA(which is Access Point).

Limited traffic in the network i.e. incoming = packet from VN’s HA

 FA and outgoing = packet from VN  FA.

Slide18

AFFECTS OF MIPMANET ON MOBILE IP

Periodic Agent Advertisements i.e. to avoid flooding beacon period was set high.(Availability of FA is known less frequently).

Movement Detection algorithms like LCS,ECS fail because the movement of node is unknown.

MIP MANET uses hop count to check for node.

MIPMANET Cell Switching: Switch to new FA if it has <= (current hops to FA -2).

Slide19

Some of the movement detection methods used in

M

obile IP

LCS (Lazy Cell Switching)

ECS (Eager Cell Switching)

In case of MIPMANET these fail because of the limitations:

LCS – Node should be with same FA for most of time.(Bad for Ad hoc networks)

ECS – Nodes move in straight line.(No switching)

MIPMANET uses MMCS(= ECS + switching)

MIPMANET Cell

Switching (MMCS

)

Your logo here

Slide20

All five nodes are registered

with

FAI.

Node

E moves toward

FA2.

FA2 has sent 2

agent adv. into the N/W.

Nodes D

and E have decide

d

to switch to FA2

.

MMCS

Your logo here

Slide21

REGISTATION AND DATAGRAM DELIVERY

Unlike in Mobile IP, Request and Reply travel multiple hops.

In case of multi hop request FA has link layer address of last intermediate hop.

Hence use ad hoc routing protocol to forward packets from FA

 VN

.

If visiting node(VN)

 FA connection is lost then remove entry to FA directly and all other destinations that can be tunneled through that FA.

Slide22

MIPMANET INTERNETWORKING

UNIT(MIWU)

Collection of all the new functionality of FA.

Added between FA and Ad hoc network.

Two ways to add:

Either on same link as FA.

Or put on FA itself.

MIWU transforms Mobile IP’s link layer communication into network layer and vice versa.

Slide23

CONCLUSION

MIPMANET = Mobile IP + Ad hoc networking. Result = enhanced mobility.

No changes to FA’s functionality(just add MIWU).

Broadcast agent advertisements helps to connect to closest FA(and access internet).

Transparency of interaction between routing protocol and Mobile IP.

Nodes that are not using Mobile IP have not affect on them.(they see network as standalone)

MIPMANET allows VN to have internet access without involving lot of changes to be made.