International Journal of Computer Applications (0975 – 8887) Volume 95 – No 2, June 2014 19 Performance Analysis of Handoff Calls for Quality of Service using Call Admission Control Algorithm for Data, Video and Voice Traffic Ratnesh Konte M.TECH* (DC) SSSIST, Sehore, M.P., India Neeraj Kumar Department of Electronics and Communication, SSSIST, Sehore, M.P. India Jaikaran Singh Department of Electronics and Communication, SSSIST, Sehore, M.P. India Mukesh Tiwari Department of Electronics and Communication, SSSIST, Sehore, M.P. India ABSTRACT Call admission control is a very important measure in CDMA system to guarantee the quality of the communicating links. In future wireless networks multimedia traffic will have different QoS requirements. The call admission control is very important measure in CDMA system to guarantee the quality of the communicating link In future wireless networks multimedia traffic will have different QoS requirements. We have proposed call admission and call control algorithms for QoS provisioning for multimedia traffic in a cellular mobile network. In this paper we propose a call admission control algorithm that keeps the dropping probability below a specified level while achieving high channel utilization. Keywords 3G, Call admission control, Quality of service. 1. INTRODUCTION The first generation and second generation system are offered better voice quality and efficient spectrum utilization through digital modulation techniques but it is not efficient for the better service performances of the selected network traffic. The third generation (3G) systems focused itself primarily on universality, high data rate, flexibility, service quality. The data rate to be supported were at least 144 kbps in vehicular, 394 kbps in outdoor-to-indoor, and up to 2 Mbps in indoor. 3G systems allowed both circuit switching and packet switching and opened the possibility to provide advanced and flexible quality of service (QoS) support. Delay sensitive Services, such as voice and video, were served in circuit- switched mode. while data traffic, which can tolerate relatively long delay, have been through packet switched mode to efficiently utilize the system resource. 2. CALL ADMISSION CONTROL IN MOBILE WIRELESS NETWORKS Call Admission Control (CAC) is defined as a system for managing arriving traffic, at the call, connection or session level based on some predefined criteria. A CAC scheme admits, rejects or delays the incoming calls based on a criteria to achieve some QoS objectives for new and existing users [3]. The performance requirements posed by users are measured in terms of quality of service (QoS) and grade of service (GoS). GoS is a call‐level factor, which includes new call blocking probability and handoff call blocking probability. Call Admission Control (CAC) ensures network integrity by restricting access to the network so as to avoid overload and congestion, and ensures that QoS requirements of all ongoing connections are satisfied. Resource provision is the major requirement to provide integrated services through wireless mobile communication systems such as voice, data, images, paging, e-mail and multimedia services. Our CAC algorithm reduces the congestion, call blocking and call dropping by creating a limited number of call connections in the network. CAC algorithms achieve efficient resource management by limiting the number of admitted calls and by ensuring QoS to users. Since mobile users experience severe service disruption when handoff calls are dropped, many CAC algorithms employ guard channels for prioritizing and protecting handoff calls [1]. 3. ALGORITHM In a mobile wireless cell, the base station has limited power resources. In other words the combined transmitted power to all mobile terminals cannot exceed a certain maximum level. Each newly admitted call makes this resource further scarce. Hence it is very important to adopt policy that will determine which calls to efficiently admit, block or reject based on available resources. Call admission control algorithm ensure that the admission of new call into the resource constrained network does not violate the ongoing users. The following outlines some of the basic needs for which CAC is employed. • Maximize revenue. • Fair resource sharing. • Guarantee transmission rate. • Guarantee QoS at packet level. • Some UMTS classes given priority over others. • Guarantee call-dropping probability. • Guarantee signal quality.