Practical Performance Modeling: Application of the Mosel Language
Practical Performance Modeling: Application of the Mosel Language
Modeling multiple IP traffic streams with rate limits
IEEE/ACM Transactions on Networking (TON)
Performance aspects of data broadcast in wireless networks with user retrials
IEEE/ACM Transactions on Networking (TON)
Migration to 4 G: Mobile IP based Solutions
AICT-ICIW '06 Proceedings of the Advanced Int'l Conference on Telecommunications and Int'l Conference on Internet and Web Applications and Services
Performance evaluation of admission control and adaptive modulation in OFDMA WiMax systems
IEEE/ACM Transactions on Networking (TON)
Phase-type models for cellular networks supporting voice, video and data traffic
Mathematical and Computer Modelling: An International Journal
IEEE Communications Magazine
IEEE Communications Magazine
Overview of mobile WiMAX technology and evolution
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
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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.