128 research outputs found
Challenges of future multimedia QoE monitoring for internet service providers
The ever-increasing network traffic and user expectations at reduced cost make the delivery of high Quality of Experience (QoE) for multimedia services more vital than ever in the eyes of Internet Service Providers (ISPs). Real-time quality monitoring, with a focus on the user, has become essential as the first step in cost-effective provisioning of high quality services. With the recent changes in the perception of user privacy, the rising level of application-layer encryption and the introduction and deployment of virtualized networks, QoE monitoring solutions need to be adapted to the fast changing Internet landscape. In this contribution, we provide an overview of state-of-the-art quality monitoring models and probing technologies, and highlight the major challenges ISPs have to face when they want to ensure high service quality for their customers
Dispensing Iptv Amenities Through Simulation By Enhancing Cloud Possessions
Prenent we are having virtual technologies these are failure on quality of services.The development of IPTV service delivery through cloud services is of temporary interest in many applications such as failure finding iptv services. However, achieving similar advantages with period of time services are often a challenge. For construct the problem as an optimization formulation that uses a generic cost function. The concept of cloud streaming targets at providing the video over the cloud as a service, so that end users can satisfy their varieties of streaming demands as long as it can access to Internet.Users of different terminal can obtain the same high quality of service, with no special software or hardware required to enable streaming media.Internet content roviders can stream their videos to end users, by replying on public cloud streaming platform, instead of building their own streaming media server.ICPs then can share the cost and become rather scalable in serving users
Dependable IPTV Hosting
This research focuses on the challenges of hosting 3rd party RESTful applications that have
to meet specific dependability standards. To provide a proof of concept I have implemented
an architecture and framework for the use case of internet protocol television. Delivering TV
services via internet protocols over high-speed connections is commonly referred to as IPTV
(internet protocol television). Similar to the app-stores of smartphones, IPTV platforms enable
the emergence of IPTV services in which 3rd party developers provide services to consumer
that add value to the IPTV experience. A key issue in the IPTV ecosystem is that currently
telecommunications IPTV providers do not have a system that allows 3rd party developers
to create applications that meet their standards. The main challenges are that the 3rd party
applications must be dependable, scalable and adhere to service level agreements. This research
provides an architecture and framework to overcome these challenges
Investigating Decision Support Techniques for Automating Cloud Service Selection
The compass of Cloud infrastructure services advances steadily leaving users
in the agony of choice. To be able to select the best mix of service offering
from an abundance of possibilities, users must consider complex dependencies
and heterogeneous sets of criteria. Therefore, we present a PhD thesis proposal
on investigating an intelligent decision support system for selecting Cloud
based infrastructure services (e.g. storage, network, CPU).Comment: Accepted by IEEE Cloudcom 2012 - PhD consortium trac
SELECTING CLOUD SERVER WEALTH TO PROVIDE IP-TV ARTIFICIAL SERVICES
Content and repair providers and services information usually provision their sources meant for handling demands of peak of each and every service inside the population of subscriber. The sever-capacity regions created by servers each time moment were identified to ensure that all of the demands of coming get together their deadlines. Measured for the instant funnel change workload that's very bursty while offering an enormous peak to average ratio, Video-on-Needs possess a moderately steady load and enforces less delay of stringent needs. The height inside the sum service may be satisfied to some extent compared to summation within the peak reliance on every service when they're hold autonomously. How large the smoothing window concludes what type of VoD load inside the burst window is spread. Within the finish to accomplish logical design the most effective hierarchy may be the Super Mind Finish Office where both content of straight line programming broadcast and VoD are acquired. Instant funnel change provide a demand that's comparative to the amount of users concurrently initiating a celebration of funnel change. When users modify channels during watching live TV, additional functionality needs to be provided therefore the funnel modification becomes effective quickly. Operational information helps to ensure that susceptible to amazing burst load put on servers while using modification demands correlated funnel from consumers
Crowdsourced Live Streaming over the Cloud
Empowered by today's rich tools for media generation and distribution, and
the convenient Internet access, crowdsourced streaming generalizes the
single-source streaming paradigm by including massive contributors for a video
channel. It calls a joint optimization along the path from crowdsourcers,
through streaming servers, to the end-users to minimize the overall latency.
The dynamics of the video sources, together with the globalized request demands
and the high computation demand from each sourcer, make crowdsourced live
streaming challenging even with powerful support from modern cloud computing.
In this paper, we present a generic framework that facilitates a cost-effective
cloud service for crowdsourced live streaming. Through adaptively leasing, the
cloud servers can be provisioned in a fine granularity to accommodate
geo-distributed video crowdsourcers. We present an optimal solution to deal
with service migration among cloud instances of diverse lease prices. It also
addresses the location impact to the streaming quality. To understand the
performance of the proposed strategies in the realworld, we have built a
prototype system running over the planetlab and the Amazon/Microsoft Cloud. Our
extensive experiments demonstrate that the effectiveness of our solution in
terms of deployment cost and streaming quality
Efficiency gains due to network function sharing in CDN-as-a-Service slicing scenarios
Proceedings of: IEEE 7th International Conference on Network Softwarization (NetSoft), 28 June-2 July 2021, Tokyo, Japan.The consumption of video contents is currently dominating the traffic observed in ISP networks. The distribution of that content is usually performed leveraging on CDN caches storing and delivering multimedia. The advent of virtualization is bringing attention to the CDN as use case for virtualizing the cache function. In parallel, there is a trend on sharing network infrastructures as a way of reducing deployment costs by ISPs. Then, an interesting scenario emerges when considering the possibility of sharing virtualized cache functions among ISPs sharing a common physical infrastructure, mostly considering that usually those ISPs offer similar content catalogues to final end users. This paper investigates through simulations the potential efficiencies that can be achieved when sharing a virtual cache function if compared to the classical approach of independent virtual caches operated per ISP.This work has been partly funded by the project 5GROWTH (Grant Agreement no. 856709)
Elastic Highly Available Cloud Computing
High availability and elasticity are two the cloud computing services technical features. Elasticity is a key feature of cloud computing where provisioning of resources is closely tied to the runtime demand. High availability assure that cloud applications are resilient to failures. Existing cloud solutions focus on providing both features at the level of the virtual resource through virtual machines by managing their restart, addition, and removal as needed. These existing solutions map applications to a specific design, which is not suitable for many applications especially virtualized telecommunication applications that are required to meet carrier grade standards. Carrier grade applications typically rely on the underlying platform to manage their availability by monitoring heartbeats, executing recoveries, and attempting repairs to bring the system back to normal. Migrating such applications to the cloud can be particularly challenging, especially if the elasticity policies target the application only, without considering the underlying platform contributing to its high availability (HA). In this thesis, a Network Function Virtualization (NFV) framework is introduced; the challenges and requirements of its use in mobile networks are discussed. In particular, an architecture for NFV framework entities in the virtual environment is proposed. In order to reduce signaling traffic congestion and achieve better performance, a criterion to bundle multiple functions of virtualized evolved packet-core in a single physical device or a group of adjacent devices is proposed. The analysis shows that the proposed grouping can reduce the network control traffic by 70 percent. Moreover, a comprehensive framework for the elasticity of highly available applications that considers the elastic deployment of the platform and the HA placement of the application’s components is proposed. The approach is applied to an internet protocol multimedia subsystem (IMS) application and demonstrate how, within a matter of seconds, the IMS application can be scaled up while maintaining its HA status
ACUTA Journal of Telecommunications in Higher Education
In This Issue
President\u27s Message
From the ACUTA CEO
RIP for TDM
IPTV: The Future of Gable TV
Not All SIP Trunking ls Problem Free
lnterview: Four Campuses Look at lPv6, SIB and More
lPv6: What You Don\u27t Know CAN Hurt You
Moving from the Old to the New
2013 Award Winners
lnstitutional Excellence Award Honorable Mention: Abilene Christian University Virtual La
Progressive introduction of network softwarization in operational telecom networks: advances at architectural, service and transport levels
Technological paradigms such as Software Defined Networking, Network Function
Virtualization and Network Slicing are altogether offering new ways of providing services.
This process is widely known as Network Softwarization, where traditional operational
networks adopt capabilities and mechanisms inherit form the computing world, such as
programmability, virtualization and multi-tenancy.
This adoption brings a number of challenges, both from the technological and operational
perspectives. On the other hand, they provide an unprecedented flexibility opening
opportunities to developing new services and new ways of exploiting and consuming telecom
networks.
This Thesis first overviews the implications of the progressive introduction of network
softwarization in operational networks for later on detail some advances at different levels,
namely architectural, service and transport levels. It is done through specific exemplary use
cases and evolution scenarios, with the goal of illustrating both new possibilities and existing
gaps for the ongoing transition towards an advanced future mode of operation.
This is performed from the perspective of a telecom operator, paying special attention on
how to integrate all these paradigms into operational networks for assisting on their evolution
targeting new, more sophisticated service demands.Programa de Doctorado en Ingeniería Telemática por la Universidad Carlos III de MadridPresidente: Eduardo Juan Jacob Taquet.- Secretario: Francisco Valera Pintor.- Vocal: Jorge López Vizcaín
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