add, remove node by changing the weight
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Chapter 1
Introduction
1.1 Problem

The objective of this project is to draw nodes in the specified network.we can add nodes,delete nodes,change the weight of the node ,remove the node
By changing the weight of the node to zero. We can also find the best path for the designed network.
1.2 Software tools
Front-end tool: JAVA 1.4

Java is an object-oriented programming language developed sun Microsystems and it is also a powerful internet programming language. Java is a high-level programming language which has the following features
• Object oriented
• Portable
• Architecture-neutral
• High-performance
• Multithreaded
• Robust
• Secure
Java is an efficient application programming language. It has APIs to support the GUI based application development. The following feature of java makes it more suitable for implementing this project.
Platform Independent
Platform independence-that is, the ability of a program to move easily from one computer system to another-is one of the most significant advantages that Java has over other programming languages. Java is platform independent at both the source and the binary level.
Powerful database connectivity
Java has powerful database connectivity. The effective back end connectivity support will results in quick retrieval and storage of large volume of data .It also supports concurrency control mechanisms and thus it can improve the data consistency.
Back-end tool: MS-ACCESS
• It minimizes data contention and guarantees data concurrency.
• Access maintains the preceding features with a high degree of overall system performance.
• Database users do not suffer from slow processing performance.
• Access also offers the heterogeneous option that allows users to access data on some non oracle database transparently.
PROBLEM STATEMENT
Chapter 2
Problem Statement

The objective of this project is to draw nodes in the specified network.we can add nodes, delete nodes, change the weight of the node, and remove the node.
By changing the weight of the node to zero. We want to find the best path for the designed network.
METHODOLOGY
Chapter 3
Methodology
Abstract:

The vision of the mobile ad-hoc networking is to support robust and efficient operation in mobile wireless networks by incorporating routing functionality into mobile nodes. With this increasing popularity and deployment, the demands on the wireless network are going to increase in future.
The long-term goal of this research is to improve the speed of wireless networks so that it can meet the ever so rising demands of bandwidth. The primary goals are to provide a framework for performing the necessary experiments in a platform independent environment. For that, the designing and implementation of a basic Simulation of Routers with QoS in Java.
Existing System:
In the existing simulation packages the design is based on building a model of a network of routers and then generates traffic for each node. If the number of nodes increases we have to simulate a very large number of routers and the complexity of the simulation increases as the square of that number.
So we need a system which has to provide a new approach to simulate these routers of ad-hoc Networks.
Proposed System:
The emergence of roaming applications has recently generated much interest in wireless network infrastructures that support real-time communications. In this project, we propose a bandwidth routing protocol for quality-of-service (QoS) support in a mobile network. The QoS routing feature is important for a mobile network to interconnect wired networks with QoS support (e.g., ATM, Internet, etc.). The QoS routing protocol can also work in a stand-alone multihop mobile network for real-time applications. Our QoS routing protocol contains end-to-end bandwidth calculation and bandwidth allocation. Under such a routing protocol, the source (or the ATM gateway) is informed of the bandwidth and QoS available to any destination in the mobile network. This knowledge enables the establishment of QoS connections within the mobile network
and the efficient support of real-time applications.
In addition, it enables more efficient call admission control. In the case of Router interconnection, the bandwidth information can be used to carry out intelligent handoff between router gateways and/or to extend the router virtual circuit service to the mobile network with possible renegotiation of QoS parameters at the gateway. We examine the system performance in various QoS traffic flows and mobility environments via simulation.
Simulation results suggest distinct performance advantages of our protocol that calculates the bandwidth information. It is particularly useful in call admission control. Furthermore, “standby” routing enhances the performance in the mobile environment. Simulation experiments show this improvement.
Module Information:
Module-1
Simulation of Routers.
Module-2
Implementing the QoS.
Module Description:
Module 1:
A. Bandwidth Reservation:

Multimedia applications such as digital audio and video have much more stringent QoS requirements than traditional datagram applications. For a network to deliver QoS guarantees, it must reserve and control resources. A major challenge in multihop, multimedia networks is the ability to account for resources so that bandwidth reservations (in a deterministic or statistical sense) can be placed on them. We note that in cellular (single hop) networks, such accountability is made easily by the fact that all stations learn of each other’s requirements, either directly or through a control station (e.g., the base station in cellular systems).
However, this solution cannot be extended to the multihop environment. To support QoS for real-time applications, we need to know not only the minimal delay path to the destination, but also the available bandwidth on it. A VC should be accepted only if there is enough available bandwidth. Otherwise, it would disrupt the existing VC’s.
We only consider “bandwidth” as the QoS (thus omitting signal-to-interference ratio (SIR), packet loss rate, etc.). This is because bandwidth guarantee is one of the most critical requirements for real-time applications. “Bandwidth” in timeslotted network systems is measured in terms of the amount of “free” slots. The goal of the QoS routing algorithm is to find a shortest path such that the available bandwidth on the path is above the minimal requirement.
To compute the “bandwidth”-constrained shortest path, we not only have to know the available bandwidth on each page link along the path, but we also have to determine the scheduling of free slots. Though some algorithms were proposed to solve this QoS routing problem, they unfortunately may only work in some special environments.
B. Bandwidth Calculation
The transmission time scale is organized in frames, each containing a fixed number of time slots. The entire network is synchronized on a frame and slot basis. The frame/slot synchronization mechanism is not described here, but can be implemented with techniques similar to those employed in the wired networks (e.g., “follow the slowest clock” and properly modified to operate in a wireless mobile environment. Propagation delays will cause imprecision in slot synchronization. However, slot guard times (fractions of a microsecond) will amply absorb propagation delay effects (in the order of microseconds).
Each frame is divided into two phases, namely, the control phase and the data phase. The size of each slot in the control phase is much smaller than the one in the data phase. The control phase is used to perform all the control functions, such as slot and frame synchronization, power measurement, code assignment, VC setup, slots request, routing table. The amount of data slots/frame assigned to a VC is determined according to a QoS requirement.
The control phase uses pure TDMA with full power transmission in a common code. That is, each node takes turns to broadcast its information to all of its neighbors in a predefined slot, such that the network control functions can be performed distributive. We assume the information can be heard by all of its adjacent nodes. In a noisy environment, where the information may not always be heard perfectly at the adjacent nodes, an acknowledgment scheme is performed in which each node has to ACK for the last information in its control slot. By exploiting this approach, there may b e one frame delay for the data transmission after issuing the data slot reservation. Ideally, at the end of the control phase, each node has learned the channel reservation status of the data phase. This information will help one to schedule free slots, verify the failure of reserved slots, and drop expired real-time packets between and is {1, 3}.
SYSTEM REQUIREMENTS
Chapter 5
Hardware & Software Requirements
Hardware specification:

S/W Description:
OPERATING SYSTEM: Linux
PROGRAMMING
LANGUAGE : Java

Software specification:
Technology : Java API for Wireless Application Protocol which implements the 802.11 WLAN MAC protocol.
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