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IP Multimedia Subsystem

About: IP Multimedia Subsystem is a research topic. Over the lifetime, 4398 publications have been published within this topic receiving 43698 citations.


Papers
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Journal ArticleDOI
TL;DR: This study presented a network and device-aware Quality of Service (QoS) approach that provides multimedia data suitable for a terminal unit environment via interactive mobile streaming services, further considering the overall network environment and adjusting the interactive transmission frequency and the dynamic multimedia transcoding, to avoid the waste of bandwidth and terminal power.
Abstract: Cloud multimedia services provide an efficient, flexible, and scalable data processing method and offer a solution for the user demands of high quality and diversified multimedia. As intelligent mobile phones and wireless networks become more and more popular, network services for users are no longer limited to the home. Multimedia information can be obtained easily using mobile devices, allowing users to enjoy ubiquitous network services. Considering the limited bandwidth available for mobile streaming and different device requirements, this study presented a network and device-aware Quality of Service (QoS) approach that provides multimedia data suitable for a terminal unit environment via interactive mobile streaming services, further considering the overall network environment and adjusting the interactive transmission frequency and the dynamic multimedia transcoding, to avoid the waste of bandwidth and terminal power. Finally, this study realized a prototype of this architecture to validate the feasibility of the proposed method. According to the experiment, this method could provide efficient self-adaptive multimedia streaming services for varying bandwidth environments.

69 citations

Proceedings ArticleDOI
23 Oct 2016
TL;DR: Experimental results show that this new approach to detect ServiceLevel Agreements (SLAs) violations and preliminary symptomsof SLAs violations can achieve high precision and recall, and low false alarm rate and can pinpoint the root anomalous VNF VM causing SLAviolations.
Abstract: The maturity of hardware virtualization has motivated Communication Service Providers (CSPs) to apply thisparadigm to network services. Virtual Network Functions (VNFs)result from this trend and raise new dependability challengesrelated to network softwarisation that are still not thoroughlyexplored. This paper describes a new approach to detect ServiceLevel Agreements (SLAs) violations and preliminary symptomsof SLAs violations. In particular, one other major objectiveof our approach is to help CSP administrators to identify theanomalous VM at the origin of the detected SLA violation, whichshould enable them to proactively plan for appropriate recoverystrategies. To this end, we make use of virtual machine (VM)monitoring data and perform both a per-VM and an ensembleanalysis. Our approach includes a supervised machine learningalgorithm as well as fault injection tools. The experimental testbedconsists of a virtual IP Multimedia Subsystem developed by theClearwater project. Experimental results show that our approachcan achieve high precision and recall, and low false alarm rateand can pinpoint the root anomalous VNF VM causing SLAviolations. It can also detect preliminary symptoms of highworkloads triggering SLA violations.

69 citations

Patent
14 Apr 2005
TL;DR: In this article, a profile of a communications device (108) is stored on a data store (112) accessible via the network (116) to describe multimedia capabilities of the communications device(108), the profile (330, 422) adapted to include a description of multimedia capability of the multimedia device(115).
Abstract: Exchanging multimedia data (336, 426) between a multimedia device (115) and a network (116) involves digitally coupling a communications device (108) to the multimedia device (115) A profile (330, 422) of the communications device (108) is stored on a data store (112) accessible via the network (116) The profile (330, 422) describes multimedia capabilities of the communications device (108), the profile (330, 422) adapted to include a description of multimedia capabilities of the multimedia device (115) The profile (330, 422) is accessed for purposes of formatting the multimedia data (336, 426) via a network entity (110) The multimedia data (336, 426) is formatted via the network entity (110) based on the profile (330, 422) to be compatible with the multimedia device (115) The multimedia data (336, 426) is exchanged between the multimedia device (115) and the network (116) via the communications device (108)

68 citations

Proceedings ArticleDOI
15 May 1994
TL;DR: This work shows that local deterministic delay bounds can be guaranteed over a link for bursty traffic even when the sum of the peak rates of all the connections is greater than the link speed, and can be efficiently extended from a single switch to a network of arbitrary topology by using rate-controlled service disciplines at the switches.
Abstract: Network-based real-time multimedia applications require guaranteed performance communication services. To provide guaranteed service, resources have to be reserved within the network. If reservation is based on the peak rate of each connection, the network will be under-utilized by guaranteed service traffic when the traffic is bursty. We first show that local deterministic delay bounds can be guaranteed over a link for bursty traffic even when the sum of the peak rates of all the connections is greater than the link speed. Compared to previous admission control conditions, the new result allows a multi-fold increase in the number of admitted connections when the traffic is bursty. We then show that this new result can be efficiently extended from a single switch to a network of arbitrary topology by using rate-controlled service disciplines at the switches. >

68 citations

Patent
30 Dec 2004
TL;DR: In this article, the authors propose an apparatus and a method for routing a multimedia message sent by a user agent to one of a plurality of multimedia message service centers, the user agent applies a pre-determined destination address to the multimedia message.
Abstract: An apparatus and a method for routing a multimedia message sent by a user agent to one of a plurality of multimedia message service centers, the user agent applying a pre-determined destination address to the multimedia message. The multimedia message is received at the pre-determined destination address, a target multimedia message service center is selected and the multimedia message is forwarded to the target multimedia message service center. Routing is based on address information contained in the multimedia message, session identification information associated with the multimedia message, load-balancing and fault-tolerance information associated with each one of the plurality of multimedia message service centers, service identifying information contained in the multimedia message and combinations thereof.

68 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20235
202219
202124
202050
201971
201881