CROSS LAYER DESIGN IN MULTI-HOP WIRELESS NETWORKS

1. ABSTRACT:

MULTI -hop wireless networks are usually defined as a collection of nodes equipped with radio transmitters, which not only have the capability to communicate each other in a multi-hop fashion, but also to route each others’ data packets. The idea of multihop wireless networking is sometimes also called infrastructure-less networking, since nodes in the network dynamically establish routing among themselves to form their own network “on the fly.”The distributed nature of such networks makes them suitable for a variety of applications where there are no assumed reliable central entities, or controllers,and may significantly improve the scalability issues of conventional single-hop wireless networks.  Multi-hop wireless networks are becoming a new attractive network design paradigm owing to their low cost and ease of deployment, and have found more and more applications.

2.EXISTING SYSTEM : 

The currently available system: Single Hop Wireless Network

Cellular networks and wireless local area networks (WLANs) where every node is within one hop of a central controlled entity (e.g., base stations, access points, etc.), and only communicates with the entity through single hop transmission. These networks require much infrastructure support,hence are expensive to deploy.

 3.PROPOSED SYSTEM

Multi-hop wireless networks can be further classified into three categories:   

1.    Mobile and hoc networks (MANETs),

                                    2. Wireless Mesh Networks (WMN's)

                             3.  Wireless Sensor Networks (WSN's)

For the  efficient multi-hop wireless networks design, namely: (a) network protocols and (b) network operations and management (O&M)

                                            The designs include both in a cross-layer design paradigm to ensure the notion of service quality, such as quality of service (QoS) in wireless mesh networks (WMNs) and quality of information (QoI) in wireless sensor networks (WSNs).

This dissertation proposes:

A cross-layer design framework integrating distributed proportional-fair scheduling, QoS routing, and connection admission control algorithms,

while using WMNs.

A run time,quantitative feedback control methodology to estimate the network capacity for any packet network, by modeling the network as a black box, where a generic admission control scheme is also developed to perform QoS control for the new connection.

Enhancement to the previous designs by proposing a negotiation process, to bridge the applications’ service quality demands and the resource management

Quality is extended to the environment of multiple, disconnected, mobile multi-hop wireless networks, where the question of how to maintain communications using dynamically controlled, unmanned data ferries is investigated.

4. SYSTEM REQUIREMENT :

4.1 HARDWARE SPECIFICATION :

Processor Type           : Pentium -IV

Speed                          : 1.2 GHZ

Ram                            : 512MB RAM

  Hard disk                    : 40GB HD

4.2 SOFTWARE SPECIFICATION :

Operating System        : Win2000/xp                                                    

Language                      : .Net,SQL server 2005

Protocol                        : TCP/IP