Ip multimedia subsystems

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  • Tài liệu tham khảo IMS - IP Multimedia Subsystem

    ppt21p huynhthaitan 23-07-2011 112 35   Download

  • SIP’s popularity has grown enormously over the past few years. A big boost in support came in November 2000, with the acceptance of SIP by the 3rd Generation Partnership Project (3GPP). 3GPP is composed of standards organizations in China, Europe, Japan, North America and South Korea, and is dedicated to the proliferation of a third-generation wireless global standard. More specifically, this organization focuses on the development of standards for the Universal Mobile Telecommunications System (UMTS).

    pdf11p thuxuan 06-08-2009 136 18   Download

  • IMS – the IP Multimedia Subsystem of the 3GPP family of telecommunication standards – may very well be at the same time the worst and the best kept secret of the telecom world. “Secret” because it is essentially designed to be invisible – the modern version of the infrastructure that delivers communication to the world. “Worst kept” because it has dominated the strategies for communication evolution in the past years, and has thus been very visible, at least to those in the industry.

    pdf504p hotmoingay 03-01-2013 55 15   Download

  • Two technologies that have profoundly impacted people on this planet recently are cellular telephony and the Internet. The former, with its tremendous advantages of tetherless and ubiquitous communication capabilities, was accepted worldwide. It met the expectations of a success story for wealthy nations. On the other hand, its reach into the developing and the not-so-prosperous parts of the world was even more profound.

    pdf438p tailieuvip13 19-07-2012 24 2   Download

  • SIP’s popularity has grown enormously over the past few years. A big boost in support came in November 2000, with the acceptance of SIP by the 3rd Generation Partnership Project (3GPP). 3GPP is composed of standards organizations in China, Europe, Japan, North America and South Korea, and is dedicated to the proliferation of a third-generation wireless global standard. More specifically, this organization focuses on the development of standards for the Universal Mobile Telecommunications System (UMTS).

    pdf21p thuxuan 06-08-2009 64 34   Download

  • 3GPP, or the Third Generation Partnership Project, was formed in late 1998 to specify the evolution of GSM into a third generation cellular system. Although much focus was placed on new higher bandwidth radio access methods, it was realized that the network infrastructure must also evolve in order to provide the rich services capable of taking advantage of higher bandwidths. The original GSM network infrastructure was very much circuit- and voicecentric. Although data capabilities were added over time the system retained much of its circuit-switched heritage and its inherent limitations.

    pdf27p 0984272663 27-04-2011 63 22   Download

  • The growth in the use of mobile networks has come mainly with the third generation systems and voice traffic. With the current third generation and the arrival of the 4G, the number of mobile users in the world will exceed the number of landlines users. Audio and video streaming have had a significant increase, parallel to the requirements of bandwidth and quality of service demanded by those applications. Mobile networks require that the applications and protocols that have worked successfully in fixed networks can be used with the same level of quality in mobile scenarios....

    pdf0p wqwqwqwqwq 06-07-2012 49 14   Download

  • The growth in the use of mobile networks has come mainly with the third generation systems and voice traffic. Withthe current third generation and the arrival of the 4G, the number of mobile users in the world will exceed the number of landlines users. Audio and video streaming have had a significant increase, parallel to the requirements of bandwidth and quality of service demanded by those applications. Mobile networks require that the applications and protocols that have worked successfully in fixed networks can be used with the same level of quality in mobile scenarios.

    pdf183p namde04 02-05-2013 29 13   Download

  • IMS, thuật ngữ viết tắt của IP Multimedia Subsystem, là một kiến trúc mạng nhằm tạo sự thuận tiện cho việc phát triển và phân phối các dịch vụ đa phương tiện đến người dùng, bất kể là họ đang kết nối thông qua mạng truy nhập nào. IMS hỗ trợ nhiều phương thức truy nhập như GSM, UMTS, CDMA2000, truy nhập hữu tuyến băng rộng như cáp xDSL, cáp quang, cáp truyền hình, cũng như truy nhập vô tuyến băng rộng WLAN, WiMAX.

    pdf26p and_12 08-08-2013 38 8   Download

  • In Chapter 1 we mentioned that the IMS (IP Multimedia Subsystem) uses Internet protocols. When the IMS needs a protocol to perform a particular task (e.g., to establish a multimedia session), the standardization bodies standardizing the IMS take the Internet protocol intended for that task and specify its use in the IMS. Still, no matter how simple this may sound, the process of choosing protocols to be used in the IMS can sometimes get tricky. Sometimes, the Internet protocol that is chosen lacks some essential functionality, or does not even exist at all. ...

    pdf15p 0984272663 27-04-2011 28 5   Download

  • The Internet Protocol (IP) Multimedia Subsystem, better known as "The IMS", is based on the specification of the Session Initiation Protocol (SIP) as standardized by the Internet Engineering Task Force (IETF). But SIP as a Protocol is only one part of it; the IMS is more than just a protocol. It is an architecture for the convergence of data, speech and mobile networks and is based on a wide range of protocols, of which most have been developed by the IETF.

    pdf0p nhulan0908 02-10-2012 29 4   Download

  • Architecting the T elecommunication Evolution: T oward Converged Network Services Vijay K.

    pdf334p nt18104 30-05-2013 25 3   Download

  • Sự phát triển với tốc độ chóng mặt của các dịch vụ đa phương tiện với yêu cầu về băng thông và chất lượng dịch vụ cao đã mở ra một kỷ nguyên mới trong lĩnh vực công nghệ viễn thông. Cùng với đó, sự phát triển nhanh chóng của các mạng di động và cố định, các mạng truyền dẫn qua vệ tinh đã làm nảy sinh các ý tưởng về khả năng hội tụ các mạng này. Đó là khởi nguồn về phân hệ đa truyền thông IP IMP (IP Multimedia Subsystem) ra đời và phát triển.

    pdf3p uocvongxua10 18-09-2015 11 2   Download

  • Third generation (3G) networks aim to merge two of the most successful paradigms in communications: cellular networks and the Internet. The IP (Internet Protocol) Multimedia Subsystem (IMS) is the key element in the 3G architecture that makes it possible to provide ubiquitous cellular access to all the services that the Internet provides. Picture yourself accessing your favorite web pages, reading your email, watching a movie, or taking part in a videoconference wherever you are by simply pulling a 3G hand-held device out of your pocket. This is the IMS vision....

    pdf4p 0984272663 27-04-2011 21 8   Download

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