38,724 research outputs found

    Multicast broadcast services support in OFDMA-based WiMAX systems [Advances in mobile multimedia]

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    Multimedia stream service provided by broadband wireless networks has emerged as an important technology and has attracted much attention. An all-IP network architecture with reliable high-throughput air interface makes orthogonal frequency division multiplexing access (OFDMA)-based mobile worldwide interoperability for microwave access (mobile WiMAX) a viable technology for wireless multimedia services, such as voice over IP (VoIP), mobile TV, and so on. One of the main features in a WiMAX MAC layer is that it can provide'differentiated services among different traffic categories with individual QoS requirements. In this article, we first give an overview of the key aspects of WiMAX and describe multimedia broadcast multicast service (MBMS) architecture of the 3GPP. Then, we propose a multicast and broadcast service (MBS) architecture for WiMAX that is based on MBMS. Moreover, we enhance the MBS architecture for mobile WiMAX to overcome the shortcoming of limited video broadcast performance over the baseline MBS model. We also give examples to demonstrate that the proposed architecture can support better mobility and offer higher power efficiency

    The Quill -- September 6, 1979

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    v. 60, no. 16, September 17, 1992

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    Spartan Daily, October 19, 1965

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    Volume 53, Issue 20https://scholarworks.sjsu.edu/spartandaily/4762/thumbnail.jp

    Editorial: Special Issue on Recent Advances in Computer and Communication Networks Technology

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    Dramatic improvements in networking technologies over the past couple of decades have yielded substantial increase in computer and communication capabilities. A number of new networking technologies such as middleware, wireless mesh networks anWiMAX, global IPv6, new generation multimedia, and modern network security started taking off. To date, some of these development efforts have mainly focused on protocol standardization, product development, and network operations besides being research targets. We believe that the accumulated experience in new networking practices now provide interesting research opportunities, not only for the broader network research community, but also for those who have been involved in these advancement developments

    Spartan Daily, October 10, 1990

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    Volume 95, Issue 29https://scholarworks.sjsu.edu/spartandaily/8028/thumbnail.jp

    Spartan Daily, December 16, 1969

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    Volume 57, Issue 55https://scholarworks.sjsu.edu/spartandaily/5204/thumbnail.jp

    ACUTA Journal of Telecommunications in Higher Education

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    In This This The Strategic Accommodation of Change Good Advice: Clean Out Your Closets (and More) Making Decisions to Remove Legacy Cable ADVERTORIAL: Best Practices for lP Telephony lmplementation ADVERTORIAL: VolP Security: Myth or Reality? ln-Room Phones: Nice or Necessary? Voice and Network Department Convergence Making Communications Accessible lnstitutional Excellence Award: Sinclair Community College Interview President\u27s Message From the Executive Director Here\u27s My Advic
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