to simulate vertical handoff between umts and wlan matlab code

The vertical solution a Handoff Algorithm UMTS-WLAN
Abstract
The next generation of mobile/wirelesscommunication systems is expected to includeheterogeneous broadband wireless networks, which willcoexist and use a shared IP core to offer diverserange high speed multimedia services to end users with modern mobile devices are multihomed areequipped with thenetworks have characteristics that complement each other. This requires the provision of seamless verticalhandoff. This article provides a few attributes anadaptive components of vertical transmission of decisionalgorithm service that allows you to select a network access to mobile node. study on effective use of theintegration of wireless wide area networks (WWAN) card, and wireless local area networks (WLAN) as anexample indicates that our algorithm handoffdecision in vertical position to determine when it is necessary handoffis, and chooses the best network access, network status, isoptimized quality servicerequirements, users ' preferences and cost of services.
1. Introduction
Next generation mobile systems/wirelesscommunication are expected to includeheterogeneous broadband wireless networks, which willcoexist and use a shared IP core to offer diverserange high rates of multimedia data transmission services through userssince networks have characteristics of thatcomplement each other. For example, if the thecomplementary characteristics of 802.11 x Networking (faster, high-capacity, low-cost, short distanceaccess) and third generation (3 g) cellular WWANsuch as universal mobile telecommunications system (UMTS) (a slower, more expensive and long enough alwaysconnected access), it is a compelling, to combine their toprovide omnipresent wireless access for users of mobile devices equipped with withcontemporary withmultiple network interfaces. integration of heterogeneous andinteroperation networksrequires intelligent algorithms design of vertical handoffdecision (VHDAs) to seamlessterminal, the personal and network mobility and toprovide the continuity and transfer of the existing solution sessions.(A) for the vertical channel switching can be onseveral issues associated with the current network that is connected to a node and themobile to networkthat alcohol he plans to relay transmission service. Vertical transmission of service decisioninvolves a compromise between many of the transfer services, suchas network conditions, system performance, applicationtypes, power requirements, mobile site terms and conditions, user settings, security, and cost; that is, quality ofservice (QoS) parameters. Using these indicators involvesthe optimizing key parameters (attributes), including signal strength, network coverage, DataRate, cost of services, reliability, safety, battery-powered, and network latency. These settings can be of importance ofdifferent for vertical handoffdecision.In this article we will present the design of a fuzzy logicbased scheme of vertical transmission of service initiation involvingsome of key parameters, as well as the solution of choice by using fuzzy decision wirelessnetwork multipleattribute solutions (FMADM) algorithm. Inparticular, optimal access network, select wireless network selection function usinga defined attribute onmultiple. The rest of the article isorganised as follows: In the next section, we providerelated the literature work. We introduce the componentsof the algorithm of relay vertical section 3. then fuzzy logic relay initiation ispresented algorithm in section 4. We explain the diagram of networkselection by using the wireless network selectionfunction in section 5. The numerical scheme of vertical performanceevaluation relay isgiven in the section


Reference: http://studentbank.in/report-vertical-ha...z3KFnHlFAz