An ad-hoc wireless network is a collection of wireless nodes that can dynamically be set up anywhere and anytime without using an existing network infrastructure or centralized administration. There are different types including wireless mesh networks, wireless sensor networks, and hybrid wireless networks. Wireless mesh networks provide many paths for data transfer between sources and destinations with advantages like high data rates and scalability. Wireless sensor networks consist of sensor nodes that monitor regions without infrastructure by working together. Hybrid wireless networks incorporate properties of multi-hop relaying along with existing infrastructure for higher capacity and flexibility. Applications include monitoring, tracking, location services, and future scopes involve connecting more devices and enabling access to real-world information.

1. AD-HOC WIRELESS NETWORK
BY
R.HARIN
12011J6079

2. CONTENTS
WHAT IS AD-HOC NETWORK?
WIRELESS MESH NETWORK
WHAT IS WSN?
HYBRID WIRELESS NETWORKS
APPLICATIONS
FUTURE SCOPE
REFERENCE

3. 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

4. CELLULAR AND AD HOC WIRELESS NETWORKS

5. 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

6. WIRELESS MESH NETWORKS OPERATING

7. 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.

8. 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.

9. 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

10. A cellular networks

11. An ad hoc wireless networks

12. HYBRID WIRELESS NETWORKS

13. HYBRID WIRELESS NETWORKS
HWN such as Multi-hop cellular networks and integrated cellular ad hoc
relay networks
The 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

14. Differences between cellular networks and ad-hoc
wireless networks

15. 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.

16. OVERVIEW OF SENSOR APPLICATIONS.

17. AD HOC WIRELESS INTERNET

18. 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

20. 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