The need of emerging markets telecom, specifically in the Indian telecom scenario, WiMAX is being looked as a broadband access solution ahead of LTE and other competing technologies due its long range and high bandwidth. Voice Over IP (VoIP) will potentially be the killer application for emerging market like India. In this paper we propose a Kiosk based WiMAX infrastructure model to provide voice connectivity to rural Indian villages. In the proposed kiosk model, plain old telephones are connected to a WiMAX subscriber station using Foreign Exchange Subscriber and a Media Gateway. The novelty of the kiosk based infrastructure models is that it has low deployment cost from a service provider perspective, and almost negligible equipment cost for the end user.In order to make the kiosk based model economically sustainable, the number of simultaneous voice calls that can be supported over the WiMAX subscriber stations needs to be maximized. To this end, the paper proposes a Dynamic Frame Profile algorithm to maximize the number of VoIP calls supported over a single subscriber station. A performance evaluation of the the proposed Dynamic Frame Profile algorithm is also carried out to study its effectiveness and reported in this paper.

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Bangalox-560012 INDIA Abstrucr4merging B-ISDN networks which use Asynchronous Transfer Mode (ATM) as a backbone network, need to provide Quality of Service(QoS) to various multimedia traffic classes such as live video, high resolution images, video on demand, etc. Since live video is expected to dominate multimedia traffic, guaranteeing QoS for live video is complex hecause of no U priori knowledge of the video stream and hence requires a good understanding of such video sources. This paper investigates a complete framework for transporting live video over ATM networks with QoS guarantees. The proposed framework comprises of a source model, call admission controller and a scheduler. The source model uses Enbopy as a measure to characterize the live video traffic. A Murkov Chain model is developed based on this measure. The source model aids in reserving resources for the admitted sessions. The algorithm developed for call admission guarantees a minimum bandwidth throughout the duration of the session. Two new scheduling algorithms viz Guaranteed Bandwidth Schedule and Guaranteed Delay Schedule optimize the bandwidth utilization of all active sessions. Using this framework for transporting live video a cell loss probability of 4.87 x lo-' and a best effort bandwidth utilization of 80% is obtained.