[Kumari*, 4 (7): July, 2015] ISSN: 2277-9655 (I2OR), Publication Impact Factor: 3.785 http: // www.ijesrt.com © International Journal of Engineering Sciences & Research Technology [483] IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY ANALYSING THE PROPOSED HANDOVER APPROACH FOR WI FI AND WIMAX Jyoti Kumari * , Gurudutt Sharma And Neha Mehta * Electronics and Communication Department, Sat Kabir Institute Of Technology and Management, Haryana, India. ABSTRACT A wireless network in which, computer devices communicates with each other without any wire. The communication medium between the computer devices is wireless. When a computer device wants to communicate with another device, the destination device must lays within the radio range of each other. Users in wireless networks transmit and receive data using electromagnetic waves. Recently wireless networks are getting more and more popular because of its mobility, simplicity and very affordable and cost saving installation. the architecture of WiMAX network and important functional entities and interfaces between these entities like base station (BS), Access service network (ASN) gateway and how it supports connection and mobility management across cell sites and inter-service provider network boundaries. Our work starts with problem formulation and implementation, giving the idea about the methodology used to solve the problem of efficient heterogeneous network handover and gives details of the factors involved in handover decision. In includes the proposed algorithm along with the proposed work description with parameter specification. KEYWORDS: wireless network, WiMAX, ASN, mobility, heterogenous, handover. INTRODUCTION Wireless networks are gaining popularity to its peak today, as the user wants wireless connectivity irrespective of their geographic position. Wireless Networks enable users to communicate and transfer data with each other without any wired medium between them. One of the reasons of the popularity of these networks is widely penetration of wireless devices. Wireless applications and devices mainly emphasize on Wireless Local Area Networks (WLANs). This has mainly two modes of operations, i.e. in the presence of Control Module (CM) also known as Base Stations and Ad-Hoc connectivity where there is no Control Module. Ad-Hoc networks do not depend on fixed infrastructure in order to carry out their operations. The operation mode of such network is stand alone, or may be attached with one or multiple points to provide internet and connectivity to cellular networks. These networks exhibits the same conventional problems of wireless communications i.e. bandwidth limitations, battery power, enhancement of transmission quality and coverage problems. Network: Before going into the details of wireless network, it is important to understand what a network is and different kind of networks available today. Any collection of devices/ computers connected with each other by means of communication channels that help the users to share resources and communicate with other users. There are two main types of network i.e. wired network and wireless network. THEORETICAL DEVELOPMENT Architecture of WiMAX: The network reference model envisions unified network architecture for supporting fixed and mobile deployments and is based on an IP service model. Below is simplified illustration of IP-based WiMAX network architecture. The overall network may be logically divided into three parts[37]:  Mobile Stations (MS) used by the end user to access the network.  The access service network (ASN), which comprises one or more base stations and one or more ASN gateways that form the radio access network at the edge.  Connectivity service network (CSN), which provides IP connectivity and all the IP core network functions. The network reference model developed by the WiMAX Forum NWG defines a number of functional entities and interfaces between those entities. Fig below shows some of the more important functional entities[37].