EC8702 Adhoc Wireless Sensor Networks

1. Course Code / Name : EC8702 -
AD HOC AND WIRELESS SENSOR NETWORKS
Nadar Saraswathi College of
Engineering & Technology
Vadapudupatti, Theni
Staff Name/ Designation: N.Mathavan /Assistant Professor
Department: Electronics and Communication Engineering
Year/Semester: IV/VII

2. UNIT I - AD HOC NETWORKS – INTRODUCTION AND ROUTING PROTOCOLS
Elements of Ad hoc Wireless Networks, Issues in Ad hoc wireless networks,
Example commercial applications of Ad hoc networking, Ad hoc wireless Internet,
Issues in Designing a Routing Protocol for Ad Hoc Wireless Networks, Classifications of
Routing Protocols, Table Driven Routing Protocols - Destination Sequenced
Distance Vector (DSDV), On–Demand Routing protocols –Ad hoc On–Demand
Distance Vector Routing (AODV).
UNIT II SENSOR NETWORKS – INTRODUCTION & ARCHITECTURES
Challenges for Wireless Sensor Networks, Enabling Technologies for Wireless
Sensor Networks, WSN application examples, Single-Node Architecture - Hardware
Components, Energy Consumption of Sensor Nodes, Network Architecture -
Sensor Network Scenarios, Transceiver Design Considerations, Optimization Goals
and Figures of Merit.

3. UNIT III WSN NETWORKING CONCEPTS AND PROTOCOLS
MAC Protocols for Wireless Sensor Networks, Low Duty Cycle Protocols And
Wakeup Concepts - S-MAC, The Mediation Device Protocol, Contention based
protocols - PAMAS, Schedule based protocols – LEACH, IEEE 802.15.4 MAC
protocol, Routing Protocols- Energy Efficient Routing, Challenges and Issues in
Transport layer protocol.
UNIT IV SENSOR NETWORK SECURITY
Network Security Requirements, Issues and Challenges in Security Provisioning,
Network Security Attacks, Layer wise attacks in wireless sensor networks,
possible solutions for jamming, tampering, black hole attack, flooding attack. Key
Distribution and Management, Secure Routing – SPINS, reliability requirements in
sensor networks. .
UNIT V SENSOR NETWORK PLATFORMS AND TOOLS
Sensor Node Hardware – Berkeley Motes, Programming Challenges, Node-level
software platforms – TinyOS, nesC, CONTIKIOS, Node-level Simulators – NS2 and
its extension to sensor networks, COOJA, TOSSIM, Programming beyond individual
nodes – State centric programming.

4. What is ad-hoc network?
An ad hoc network is one that is spontaneously
formed when devices connect and communicate with
each other.
The term ad hoc is a Latin word that literally
means "for this,"
implying improvised or impromptu.
it's decentralized and is considered a
peer-to-peer (P2P) network.

5. • Ad hoc networks are mostly wireless local area networks (LANs).
• The devices communicate with each other directly instead of relying on a
base station or access points as in wireless LANs for data transfer co-
ordination. (device-to-device network)S
• Each device participates in routing activity, by determining the route using
the routing algorithm and forwarding data to other devices via this route.

12. Classifications of Ad Hoc Networks
• Ad hoc networks can be classified into several
types depending upon the nature of their
applications. The most prominent ad hoc
networks that are commonly incorporated are
illustrated in the diagram.

23. Following are some features, uses, benefits, and
disadvantages of ad hoc networks:
• Expensive equipment isn't necessary to set up an on-the-fly, ad hoc
network.
• There isn't a single point of failure in an ad hoc network.
• Ad hoc networks are useful when you need to share files or other data
directly with another computer but don't have access to a Wi-Fi network.
• In emergencies where a wireless network is suitable but there isn't an
underlying network to use, wireless ad hoc networks deploy quickly and
produce similar results.
• More than one laptop can be connected to the ad hoc network, as long as
the adapter cards are configured for ad hoc mode and connect to the
same SSID. The computers need to be within 100 meters of each other.
• You can use an ad hoc wireless network to share your computer's internet
connection with another computer.
• There is no central management hub where all devices can be controlled.

24. Issues in Ad Hoc Networks
1.Spectrum Allocation and Purchase
2.Medium access scheme
3.Routing
4.Multicasting
5.Transport layer protocol Performance
6.Pricing scheme
7.QoS provisioning
8.Security
9.Energy management
10.Addressing and service discovery
11.Scalability1
2.Deployment considerations