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The recent years have seen an explosive upsurge in the popularity of IPTV networks and the IPTV user base. The increased user base poses new challenges to IPTV provider in providing the IPTV services with the expected QoE to the users due to the increase in traffic and heterogeneity in networks. The VoD, being the most prominent and most lucrative of the triple play components, require efficient managing...
Researches on multicast has explored security challenges faced by group communications. Multicast transport protocols and multicast security protocols need to work closely to provide reliable and secure multicast services. However, there has been comparatively little work carried out to specify how exactly the two technologies can work together efficiently. In this paper, authors present an example...
Multicast research has explored the security challenges faced in group communications. Multicast transport and multicast security need to work in close collaboration to realise a multicast service. However, there has been comparatively little work to combine the two technologies. In this paper the authors is presenting an example of partially integrating timed efficient stream loss-tolerant authentication...
Explicit congestion notification (ECN) is a mechanism that can be used to provide early indication of impending Internet congestion, and as such can be used to reduce the latency and improve the throughput of applications using the Internet. This paper examines the impact of using ECN with quality of service classification for Internet paths that include a satellite delay. Specifically, it provides...
Data transmission, such as software update, large file broadcasting and video on demand, can take advantage of the wide coverage and the broadcasting features of the satellite networks. The multicast technologies provide the support for these applications by efficiently using the expensive satellite bandwidth. One of them is the file delivery over unidirectional transport (FLUTE) protocol that is...
Multicast research has explored the security challenges faced in group communications. Multicast transport and multicast security need to work in close collaboration to realise a multicast service. However, there has been comparatively little work to combine the two technologies. In this paper the authors, presenting an example of partially integrating Timed Efficient Stream Loss-Tolerant Authentication...
The IETF Negative Acknowledgement (NACK) Oriented Reliable Multicast (NORM) protocol offers an attractive solution for small groups that do not have significant receiver heterogeneity. It avoids many of the problems associated with Asynchronous Layered Coding (ALC), such as complexity, Internet Group Management Protocol (IGMP) and routing overhead, lack of TCP friendliness and data duplication. NORM...
This paper investigates the performance of TCP-friendly multicast congestion control (TFMCC) protocol in satellite networks. TFMCC is a sender-driven congestion control protocol that extends the TFRC congestion control mechanism into multicast. To provide receiver feedback, the TFMCC protocol requires two-way communication like in DVB-RCS that allows a return path over the satellite link to the sender...
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