Congestion avoidance and control
SIGCOMM '88 Symposium proceedings on Communications architectures and protocols
Heavy-tailed probability distributions in the World Wide Web
A practical guide to heavy tails
The 3G IP Multimedia Subsystem (IMS): Merging the Internet and the Cellular Worlds, Second Edition
The 3G IP Multimedia Subsystem (IMS): Merging the Internet and the Cellular Worlds, Second Edition
Client behavior and feed characteristics of RSS, a publish-subscribe system for web micronews
IMC '05 Proceedings of the 5th ACM SIGCOMM conference on Internet Measurement
Efficient Monitoring Algorithm for Fast News Alerts
IEEE Transactions on Knowledge and Data Engineering
FeedTree: sharing web micronews with peer-to-peer event notification
IPTPS'05 Proceedings of the 4th international conference on Peer-to-Peer Systems
Continuous multicast push of Web documents over the Internet
IEEE Network: The Magazine of Global Internetworking
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Podcasting is an automatic content distribution mechanism that has gained popularity in the last couple of years. It differs from traditional vertical integrated media distribution such as Radio and Television in that 1) content is periodically made available over the Internet; and 2) media consumption takes places in computers or digital media players. This allows users to escape from the established schedule-based media experience and linear structure of broadcast programs. Content aquisition through podcasts can lead to scalability problems, when the number of subscribers grows quickly. The reason is that each client polls periodically for new content, usually about once per hour. It is expected that with the transformation of cell phones into portable information devices, this kind of services will be also used in mobile networks. This becomes a problem as bandwidth resources in these networks are scarce. In this paper we present an Advanced Podcasting Service that aims to reduce bandwidth usage maintaining an actual podcast subscription inside the network and reducing podcast distribution impact by selecting an appropriate delivery mechanism, such as multicast, while transparently supporting existing podcasting applications. To do so, the proposed architecture uses the IP Multimedia Subsystem (IMS) and the Multimedia Broadcast/Multicast Service (MBMS), both born from the efforts of the Third Generation Partnership Project (3GPP). Finally, the proposed architecture was implemented and evaluated in a local testbed.