A prefetching protocol for streaming of prerecorded continuous media in wireless environments

F. H P Fitzek, Martin Reisslein

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Streaming of continuous media over wireless links is a notoriously difficult problem. This is due to the stringent Quality of Service requirements of continuous media and the unreliability of wireless links. We develop a streaming protocol for the real-time delivery of prerecorded continuous media from a central base station to multiple wireless clients within a wireless cell. Our protocol prefetches parts of the ongoing continuous media streams into prefetch buffers in the clients. Our protocol prefetches according to a Join-the-Shortest-Queue policy. By exploiting rate adaptation techniques of wireless data packet protocols, the Join-the-Shortest-Queue policy dynamically allocates more transmission capacity to streams with small prefetched reserves. Our protocol uses channel probing to handle the location-dependent, time-varying, and bursty errors of wireless links. We evaluate our prefetching protocol through extensive simulations with VBR MPEG encoded video traces. Our simulations indicate that for bursty VBR video with an average rate of 64 kbit/sec and typical wireless communication conditions our prefetching protocol achieves client starvation probabilities on the order of 10 -4 and a bandwidth efficiency of 90 % with prefetch buffers of 128 kBytes.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsS. Fahmy, K. Park
Number of pages9
StatePublished - 2001
EventScalability and Traffic Control in IP Networks - Denver, CO, United States
Duration: Aug 22 2001Aug 24 2001


OtherScalability and Traffic Control in IP Networks
Country/TerritoryUnited States
CityDenver, CO


  • Channel Probing
  • Prefetching
  • Prerecorded Continuous Media
  • Real-Time Streaming
  • Wireless Communication

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


Dive into the research topics of 'A prefetching protocol for streaming of prerecorded continuous media in wireless environments'. Together they form a unique fingerprint.

Cite this