Conference Paper

Prioritized Resource Sharing in WiMax and WiFi Integrated Networks

DOI: 10.1109/WCNC.2010.5506188 Conference: Wireless Communications and Networking Conference (WCNC), 2010 IEEE
Source: IEEE Xplore


In order to ensure fair access and efficiency of bandwidth usage in wireless integrated networks, resource allocation algorithms should be well designed. In this paper, we briefly discuss the complete sharing, complete partitioning and Hybrid resource sharing approaches and their shortcomings in WiMax-WiFi integrated networks. To overcome these shortcomings we propose the Prioritized Resource Sharing algorithm for WiMax-WiFi integrated networks. In this algorithm, the channels are prioritized for different traffic classes rather than strict reservation or open access. The prioritized resource sharing algorithm is then extended to multiple integrated networks. Finally, we analyze the proposed algorithm by modeling it using two dimensional continuous time Markov chains. The simulation results indicate that the Prioritized Sharing model achieves the best system utilization compared to other algorithms. It is also observed that due to heavy traffic of one class of users, other class of users are not starved unlike in complete sharing

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Available from: Pankaj Agrawal, Sep 08, 2015
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    ABSTRACT: In this paper, a new interoperability model for deployment of the emerging IEEE 802.16; WiMAX (World Wide Interoperability for Microwave Access) and a Wi-Fi (Wireless Fidelity), IEEE 802.11 based on Wireless LAN technology in a complementary way as a path to migration towards the upcoming fourth generation, is presented. The model allows for the integration of the two technologies, combining the benefits of both worlds for Non line-of-sight environments. The suggested scenario is to have a hotspot Wi-Fi or urban cell surrounded by a set of WiMAX (suburban) cells where users can have continuous connectivity in different propagation environments. If the C/I (Carrier-to-Interference) of a user is higher than a given threshold (say C/I $>$ G) then the user connects to the Wi-Fi cell otherwise the user is admitted to a WiMAX cell. In both cases, the user will have the best of the available access technology with an acceptable level of grade-of-service, i.e. $<$ 2 %, on move. The suggested model includes mixed services support i.e. voice, data and video with mobility, as well as scalability based on scalable orthogonal frequency division multiplexing adaptive bandwidth allocation. The scalability is applied on data connection, where ongoing data connection is asked to modify its transmission rate for the sake of handover calls. Numerical results from the evaluation of the interoperability model are given. The curves for average data rate, utilization, blocking probability, handover blocking probability, grade of service, and throughput demonstrate the effectiveness of the new deployment model.
    No preview · Article · Sep 2013 · Wireless Personal Communications