Special issue from ACM NOSSDAV 2007

Abstract

Highly interactive video-on-demand, peer-assisted IPTV services, multiplayer online games and many other multimedia systems and applications became integral parts of our lives. At the ACM Network and Operating Systems Support for Digital Video and Audio Workshop (NOSSDAV) in Urbana, IL, USA, June 2007, researchers from many countries met to present their results and solutions to the various multimedia system and networking challenges of leading multimedia services, games and applications. At NOSSDAV 2007, 18 papers were presented and discussed. Out of these papers, the chairs of NOSSDAV 2007 selected eight papers from the program and asked the authors to submit the extended version of their NOSSDAV papers to a special issue of Springer Multimedia Systems Journal (MMSJ). Each extended submission was reviewed by three reviewers who carefully considered the presented extensions as well as the content of the whole journal paper. Out of the MMSJ review process, only three submissions had exciting new results in addition to the presentedNOSSDAVwork, and were accepted for publication in a special issue of MMSJ. The three accepted papers address various workload characterization issues, traffic analysis and performance optimizations of well-known multimedia services and systems. Wewill brieflypresent eachpaper taking top–downapproach. Wewill start with a paper that discusses the user characterization and workload analysis of a highly interactive video-ondemand (VoD) service. Then, we will provide an overview of the second paper that addresses the capacity and cost optimization of VOD service in peer-assisted IPTV system.