A novel multicast scheduling scheme for multimedia servers with variable access patterns
نویسندگان
چکیده
Analysis of server logs from multimedia servers, a FTP server, and a web server suggest that irrespective of the content type and protocol used to retrieve it, the small percentage of files that account for the most load on the server exhibit a very dynamic popularity behavior. This observation has implications for content dissemination techniques like caching, server replication, content distribution networks, and multicast. This paper focuses on the impact of multimedia popularity on multicast scheduling. Guided by the file dynamics patterns observed in the server logs, we generate synthetic multimedia server logs with varying number of server accesses and evaluate existing multicast scheduling schemes in terms of client latency and reneging of requests. Since existing scheduling schemes do not adapt gracefully to changing access conditions, we develop MWT, a new multicast scheduling scheme. MWT is fair to all multimedia files and reduces reneging, leading to better utilization of server resources during heavy access conditions.
منابع مشابه
Effizientes Echtzeit Media-on-Demand Verfahren in IP-Netzwerken
Novel broadband Internet access technologies will transfer the network bottleneck from the access point (last mile) towards the multimedia servers and backbone networks. Special video applications with there compared to traditional IP services huge demand on bandwidth will stress the multimedia servers, and backbone networks. It is up to the Internet service providers (ISP) to provide new broad...
متن کاملچند پخشی اطلاعات ویدئویی کدشده باH.264 درشبکه های ناهمگن مبتنی بر کدینگ منابع چند پایانه ای
In MTSC, correlated sources are separately encoded but jointly decoded. With appropriate modeling of all kinds of correlation among three non binary correlated sources, in this paper we propose a method for performing IMTSC among three sources. Due to the possibility of providing an approach for practical code design for more than two correlated sources in IMTSC/CEO setup, the multicast system ...
متن کاملA Survey on Multicast Routing Approaches in Wireless Mesh Networks
Wireless mesh networks (WMNs) which mediates the broadband Internet access, have been recently received many attentions by the researchers. In order to increase capacity in these networks, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi-channel WMNs (MRMC WMNs). Therefore, a vital challenge that poses in MRMC WMNs is how to properly assign channels ...
متن کاملProxy Servers for Scalable
S treaming audio and video-on-demand technologies support a broad spectrum of multimedia information applications, including digital libraries, telemedicine, distance education, and military communications. These information systems allow real-time access and sharing of documents stored on distributed servers. Deploying proxy servers as part of the network infrastructure helps to meet the incre...
متن کامل