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Rate Guarantees and Overload Protection in Input-Queued Switches

Hari Balakrishnan, Srinivas Devadas, Douglas Ehlert, Arvind
IEEE Infocom 2004, Hong Kong, China, March 2004

Abstract: Wireless local area networks, such as 802.11b, are becoming wide-spread as they provide simple wireless connectivity and data delivery. This paper examines low-latency (conversational) video communication over 802.11b networks. The challenges to enable low-latency video include overcoming the highly variable delays, losses, and bandwidth of 802.11b wireless networks. To overcome these challenges we (1) employ the H.264/MPEG-4 Advanced Video Coding (AVC) standard for high video compression efficiency and good resilience to losses, (2) use low-latency best-effort transport mechanisms, and (3) exploit the potential path diversity between each mobile client and multiple access points in the infrastructure, where we use multiple paths simultaneously or switch between multiple paths (site selection) as a function of channel characteristics. Our results indicate that the proposed system can provide significant benefits over conventional single access point (single path) systems. [Gzipped PostScript (367kB)][PDF (916kB)]

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Bibtex Entry:

   author =       "Hari Balakrishnan and Srinivas Devadas and Douglas Ehlert and Arvind ",
   title =        "{Rate Guarantees and Overload Protection in Input-Queued Switches}",
   booktitle =    {IEEE Infocom 2004},
   year =         {2004},
   month =        {March},
   address =      {Hong Kong, China}