AD-HOC WIRELESS NETWORK

BY R.HARIN

12011J6079

CONTENTS

WHAT IS AD-HOC NETWORK?

WIRELESS MESH NETWORK

WHAT IS WSN?

HYBRID WIRELESS NETWORKS

APPLICATIONS

FUTURE SCOPE

REFERENCE

WHAT IS AD-HOC NETWORK

Ad Hoc Networks: multi-hop radio relaying and without support of

infrastructure and without support of infrastructure

Wireless Mesh Networks

Wireless Sensor Networks

CELLULAR AND AD HOC WIRELESS NETWORKS

WIRELESS MESH NETWORK

An alternate communication infrastructure for mobile or fixed nodes/users

Provides many alternate paths for a data transfer session between a source and transfer session between a source and destination

Advantages of Wireless Mesh Networks

High data rate, quick and low cost of deployment,

enhanced services, high scalability, easy

extendibility, high availability, and low cost per bit

WIRELESS MESH NETWORKS OPERATING

WHAT IS WSN ?

A WSN typically has little or no infrastructure. It consists of a number of sensor nodes (few tens to thousands) working together to monitor a region to obtain data.

There are two types of WSNs:

1.Structured

2.unstructured.

An unstructured WSN is one that contains a dense collection of sensor nodes. Sensor nodes may be deployed in an ad hoc manner into the field.

In a structured WSN, all or some of the sensor nodes are deployed in a pre-planned manner.

The advantage of a structured

network is that fewer nodes can be deployed with lower network maintenance and management cost. Fewer nodes can be deployed now since nodes are placed at specific locations to provide coverage while ad hoc deployment can have uncovered regions.

TYPES OF SENSOR NETWORKS

Current WSNs are deployed on

•land

•Underground and

•underwater.

Depending on the environment, a sensor network faces different challenges and constraints.

There are five types of WSNs:

terrestrial WSN

underground WSN

underwater WSN

multi-media WSN and

mobile WSN

A cellular networks

An ad hoc wireless networks

HYBRID WIRELESS NETWORKS

HYBRID WIRELESS NETWORKS

HWN such as Multi-hop cellular networks and integrated cellular ad hoc

relay networksThe base station maintains the information about the topology of the

network for efficient routing

The capacity of a cellular network can be increased if the network incorporates the properties of multi-hop relaying network incorporates the properties of multi-hop relaying along with the support of existing fixed infrastructure

Advantages:

Higher capacity than cellular networks due to better channel reuse

Increased flexibility and reliability in routing

Better coverage and connectivity in holes

Differences between cellular networks and ad-hoc wireless networks

APPLICATIONS

AD HOC WIRELESS NETWORK applications can be classified into two categories:

•monitoring and tracking (include indoor/outdoor environmental monitoring)

•health and wellness monitoring, power monitoring, inventory

•location monitoring, factory and process automation,and seismic and structural monitoring.

•Tracking applications include tracking objects, animals, humans, and vehicles.

OVERVIEW OF SENSOR APPLICATIONS.

AD HOC WIRELESS INTERNET

FUTURE SCOPE

•* Everything on Internet

•* Everybody on Internet

•-Technology to

*Blend and interconnect individual smart devices*Enable access to information about the real world*Interact and influence the real world *Connected Consumer Electronics*Intelligent transport, industry and society, smart utilities

REFERENCE

Ad hoc wireless networks Architectures and protocols By C.Siva Ram Murthy and

B.S.Manoj

A Secure Routing Protocol for Ad Hoc network By Kimaya Sanzgir

Mobile Communications By Jochen H. Schiller