3/21/11

IN CAVE WIRELESS COMMUNICATION SYSTEM

Click to edit Master subtitle style

1NT06EC10

V.UJJWALA

3/21/11

WHAT IS ICWCS???

In-cave Wireless Communication System (ICWCS) is a Wireless Multimedia Sensor Network (WMSN) based architecture used to communicate within a cave

3/21/11

WHY WIRELESS SENSOR NETWORK???

3/21/11

WMSN NETWORKNetwork components

Standard Audio and Video sensors Scalar sensors Multiple processing hubs Storage hubs Sink Gateway Users

WMSN NETWORK ARCHITECTURE

3/21/11

Wireless multimedia sensor nodes3/21/11

A multimedia sensor node is composed of the following components:

Sensing unit

Processing unit (CPU)

Communication sub system

Storage unit (memory)

ARCHITECTURE OF SENSOR NODE

3/21/11

3/21/11

ICWCS has two kinds of nodes:

BACKBONE NODES(BN) which are mounted on the walls of the caves

MOBILE NODES (MN) which are similar to cell phones carried by team members

In addition to these nodes there is a directory service which usually runs on a computer outside the cave, stores IDs of BN, MN and user information.

ICWCS NETWORK

3/21/11

3/21/11

ICWCS OPERATION

DEPLOYMENT SETUP AND ROUTING NODE REGISTERATION

INITIAL

MOBILE

CALL

MANAGEMENT LINK DETECTION AND

BROKEN

3/21/11

1. DEPLOYMENT: WSN can be deployed manually orrandomly using the Received Signal Strength Indicator (RSSI) functionality of the BNs

2. INITIAL SETUP AND ROUTING: routing tables ofthe BNs are used to exchange topology information. Link state routing algorithm is used for routing calls. Age column values in the routing tables are used to detect dead BNs

3. MOBILE NODE REGISTRATION: each MN must

Fig.1 ICWCS Network

Fig.3 Final Routing Table for BN4BN4 To Sink BN1 BN2 BN3 BN5 BN6 BN7 BN8 Reach Age over BN2 BN2 --BN2 ----BN6 BN6 N N N N N N N N

3/21/11

Fig.2 Initial Routing Setup

Fig.4 MN Connection TableMobile Node MN1 MN2 MN3 MN4 MN5 Backbone Node BN1 BN3 BN4 BN4 BN6 Age N N N N N

3/21/11

4. CALL MANAGEMENT: there isConnection

a Mobile Node

table present on the directory service. A MN retrieves a list of the online users from this table and shows the information to the user.

5. BROKEN LINK DETECTION AND RECOVERY: toprovide uninterrupted connectivity a dead BN should be detected and its operation must be resumed by either replacing

3/21/11

OTHER APPLICATIONS OF WMSN Multimedia

Surveillance Sensor Networks Avoidance, Enforcement and Control Systems Health care

Traffic

Advanced

Delivery

3/21/11

CONCLUSION Reliable

voice communication can be provided using WMSN in RF challenged indoor environment different types of sensor nodes were used, their design was based on VF1A sensor node ICWCS is a point-to-point communication, it is being improved to have multicast and broadcast capabilities

Two

This

3/21/11