A peer-to-peer IPTV service architecture for the IP multimedia subsystem

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
A. Bikfalvi ◽  
J. García-Reinoso ◽  
I. Vidal ◽  
F. Valera
Keyword(s):  
Peer To Peer ◽  
Ip Multimedia Subsystem ◽  
Service Architecture ◽  
Iptv Service

scholarly journals QoS Supported IPTV Service Architecture over Hybrid-Tree-Based Explicit Routed Multicast Network

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Chih-Chao Wen ◽  
Cheng-Shong Wu
Keyword(s):  
Traffic Engineering ◽  
Routing Algorithm ◽  
Video Stream ◽  
Ip Multicast ◽  
Channel Switching ◽  
High Quality ◽  
Service Architecture ◽  
Signaling Mechanism ◽  
Iptv Service ◽  
Standard Quality

With the rapid advance in multimedia streaming and multicast transport technology, current IP multicast protocols, especially PIM-SM, become the major channel delivery mechanism for IPTV system over Internet. The goals for IPTV service are to provide two-way interactive services for viewers to select popular program channel with high quality for watching during fast channel surfing period. However, existing IP multicast protocol cannot meet above QoS requirements for IPTV applications between media server and subscribers. Therefore, we propose a cooperative scheme of hybrid-tree based on explicit routed multicast, called as HT-ERM to combine the advantages of shared tree and source tree for QoS-supported IPTV service. To increase network utilization, the constrained shortest path first (CSPF) routing algorithm is designed for construction of hybrid tree to deliver the high-quality video stream over watching channel and standard quality over surfing channel. Furthermore, the Resource Reservation Protocol- Traffic Engineering (RSVP-TE) is used as signaling mechanism to set up QoS path for multicast channel admission control. Our simulation results demonstrated that the proposed HT-ERM scheme outperforms other multicast QoS-based delivery scheme in terms of channel switching delay, resource utilization, and blocking ratio for IPTV service.

Overview of IP Multimedia Subsystem Protocols and Communication Services

2011 ◽  
pp. 273-299
Author(s):  
Sándor Szabó ◽  
László Gyöngyösi ◽  
Károly Lendvai ◽  
Sándor Imre
Keyword(s):  
Mobile Communications ◽  
Instant Messaging ◽  
Communication Technologies ◽  
Telecommunication Networks ◽  
Ip Multimedia Subsystem ◽  
Service Architecture ◽  
Communication Services ◽  
New Concepts ◽  
Service Portfolio ◽  
Fixed Mobile Convergence

The IP multimedia subsystem (IMS) provides advanced facilities and standardized service architecture for Next Generation Networks (NGN). IMS enables both cellular and fixed network operators to provide a wide and attractive service portfolio to the customers. In this chapter, we provide an overview of the IMS architecture and of the most popular IMS services. We discuss the basic components and mechanisms defined for IMS, the related IMS services, and we give a survey on the future of the evolving telecommunication networks. We examine the most popular IMS services such as Presence Service (PS), Instant Messaging (IM), and the background of these IMS services. The IMS system enables fixed-mobile convergence, and it bridges the gap between the fixed and mobile communications. To understand and use the new concepts and IMS services, it is important to know what the new IMS services and concepts bring to us. Our goal is to give a brief overview in order to help understanding today’s and tomorrow’s relevant communication technologies and protocols.

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