Seminar On “Mesh Networking”

Presented By:Vipin Mewar

(05IT6017) M.Tech.(IT)

School of Information TechnologyI I T Kharagpur

Contents

What is mesh networkingTypes of mesh networkingA mesh networking exampleMotivation for mesh networkingMajor issues of mesh networkingApplication of mesh networking

What is Mesh Networking

Mesh networking has created quite a buzz in the wireless community. It promises self-configuring, multi-hop networking capability that lowers node costs and power consumption, and increases reliability in a real-world noisy environment.

Types of Mesh Networking

Mesh networking is typically implemented in two basic modes: infrastructure and/or client meshing. To gain the maximum benefit that meshing can offer, both modes need to be supported simultaneously and seamlessly in a single network.

Infrastructure MeshingClient Meshing

Infrastructure Mesh Networking

Fig From : “Wireless mesh networks: a survey” available online at www.sciencedirect.com

Client Mesh Networking

Fig From : “Wireless mesh networks: a survey” available online at www.sciencedirect.com

Hybrid Mesh Networking

Fig From : “Wireless mesh networks: a survey” available online at www.sciencedirect.com

A Mesh Networking Example

Fig. From : “Wi.232DTS and Mesh Networking for short range applications in the US market “ by Steve Montgomery avavilable at http:// www.radiotronix.com/support/

Enter Mesh NetworkingSince we can determine which “nodes” in this network are in range of the other “nodes” in the network, we could build a small table into each of the nodes that may look like this:

Node 1 2 3 4 5 6

T-1 Entry 2 1 1 3 4 2

T-2 Entry 3 3 2 5 6 5

T-3 Entry NA 6 4 NA NA NA

Fig. From : “Wi.232DTS and Mesh Networking for short range applications in the US market “ by Steve Montgomery avavilable at http:// www.radiotronix.com/support/

How to make node tables??

Automatic Network DiscoveryLogical Network Definition

Motivation For Mesh Networking

Provide Improvement in reliabilityProvide RedundancyIncrease Coverage Area

Major Issues in Mesh Networking ??

Topology ManagementProviding self-configuring mechanisms for highly dynamic mobile wireless nodes

Developing a network control organization that efficiently accommodates a large hierarchical network including highly mobile nodes

Location Management- Locating and tracking highly mobile nodes in a large network

Routing MangementManaging routes to/from/through highly mobile nodes in a large network

Network will be self configurable, no human intervention needed even in a mobile configuration

Unlimited range with repeaters

Route DiscoveryAd hoc On-Demand Distance Vector routing Algo.

AB

D

C

E

G

I

H

Source

Address

Request

ID

Destination

Address

Source

sequence

Dest.

Sequence

Hop

Count

Format of Route Request packet

Source

Address

Dest.

Address

Dest.

Sequence

Hop

Count

Life

Time

Format of ROUTE REPLY packet

So Mesh Networking IS

Network Nodes can be Fixed or Mobile Network Size can be from 2 Nodes to unlimited Data can be sensors or anything that needs to be

monitored Power can be from batteries or AC mains Network will be self configurable, no human intervention

needed even in a mobile configuration Unlimited range with repeaters

Application of Mesh Networking

Digital Home NetworkingEmergency Response AgenciesSolution For Sensor NetworksBattle Field

References

   1.http://www.infoworld.com/article/05/07/20/

2.http://mesh.nowwireless.com

3.http://www.oreillynet.com/pub/a/wireless/2004/01/22/wirelessmesh.html

4. http://wireless.industrial-networking.com/articles/

5. www.radiotronix.com/support/

Thank you !!