The Playout Control Management

2011 ◽  
pp. 689-702
Author(s):  
Mirko Luca Lobina ◽  
Luigi Atzori ◽  
Fabrizio Boi
Keyword(s):  
Quality Of Service ◽  
Service Provider ◽  
Service Providers ◽  
State Of The Art ◽  
Main Idea ◽  
The State ◽  
Ip Telephony ◽  
Open Standard ◽  
Control Management

IP Telephony provides a way for an enterprise to extend consistent communication services to all employees, whether they are in main campus locations, at branch offices, or working remotely, also with a mobile phone. IP Telephony transmits voice communications over a network using open standard-based Internet protocols. This is both the strength and weakness of IP Telephony as the involved basic transport protocols (RTP, UDP, and IP) are not able to natively guarantee the required application quality of service (QoS). From the point of view of an IP Telephony Service Provider this definitely means possible waste of clients and money. Specifically the problem is at two different levels: i) in some countries, wherelong distance and particularly international call tariffs are high, perhaps due to a lack of competition or due to cross subsidies to other services, the major opportunity for IP Telephony Service Providers is for price arbitrage. This means working on diffusion of an acceptable service, although not at high quality levels; ii) in other countries, where different IP Telephony Service Providers already exist, the problem is competition for offering the best possible quality. The main idea behind this chapter is to analyze specifically the state of the art playout control strategies with the following aims: i) propose the reader the technical state of the art playout control management and planning strategies (overview of basic KPIs for IP Telephony); ii) compare the strategies IP Telephony Service Provider can choose with the aim of saving money and offering a better quality of service; iii) introduce also the state of the art quality index for IP Telephony, that is a set of algorithms for taking into account as many factors as possible to evaluate the service quality; iv) provide the reader with examples on some economic scenarios of IP Telephony.

Streaming Coded Video in P2P Networks

2017 ◽  
pp. 188-222
Author(s):  
Muhammad Salman Raheel ◽  
Raad Raad
Keyword(s):  
Quality Of Service ◽  
Approximation Algorithms ◽  
Video Coding ◽  
State Of The Art ◽  
Scalable Video Coding ◽  
The State ◽  
P2p Network ◽  
Scalable Video ◽  
Adequate Quality

This chapter discusses the state of the art in dealing with the resource optimization problem for smooth delivery of video across a peer to peer (P2P) network. It further discusses the properties of using different video coding techniques such as Scalable Video Coding (SVC) and Multiple Descriptive Coding (MDC) to overcome the playback latency in multimedia streaming and maintains an adequate quality of service (QoS) among the users. The problem can be summarized as follows; Given that a video is requested by a peer in the network, what properties of SVC and MDC can be exploited to deliver the video with the highest quality, least upload bandwidth and least delay from all participating peers. However, the solution to these problems is known to be NP hard. Hence, this chapter presents the state of the art in approximation algorithms or techniques that have been proposed to overcome these issues.

Programming Interfaces for Realtime and Cloud-Based Computing

2012 ◽  
pp. 959-975
Author(s):  
Gregory Katsaros ◽  
Tommaso Cucinotta
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
State Of The Art ◽  
New Products ◽  
The State ◽  
New Challenges ◽  
Real Time Computing ◽  
Programming Interfaces ◽  
Real Time Application

The appearance of different business roles according to this classification, potentially with differing interests, introduces new challenges with regard to the tools and mechanisms put in place in order to enable the efficient provisioning of services. Security, Quality of Service (QoS) assurance, and real-time capabilities are just a few issues that the providers are trying to tackle and integrate within the new products and services that they offer. In this chapter, we make an overview of the approaches that aim to APIs for real-time computing. In the first part of this chapter, several Real-Time Application Interfaces will be presented and compared. After that, we will document the state-of-the-art regarding the Cloud APIs available and analyze the architecture and the technologies that they support.

scholarly journals Netzneutralität: Regulierungsbedarf?

2011 ◽  
Vol 60 (2) ◽  
Author(s):  
Hubertus Gersdorf
Keyword(s):  
Quality Of Service ◽  
Service Provider ◽  
Service Providers ◽  
Competition Law ◽  
Added Value ◽  
The Internet ◽  
Best Effort ◽  
Content Provider ◽  
Regulatory Law

AbstractIn principle, all data on the Internet have so far been transmitted on the basis of best-effort, i.e. equally and without change, regardless of content, service, application, origin or destination. Quality of Service (QoS) has not been excluded, but has instead generally been limited to the access network of the Internet Service Provider (access-ISP) (IPTV, VoIP etc.). Now, the ISPs plan to offer such a QoS on the Internet as well by means of various prioritised transport groups. These QoS transport groups are not supposed to displace, but rather to complement the best effort area (QoS and best effort). Hereby the ISP first expect to participate more in the added value of the Internet. Secondly, the problems caused by the bottleneck for timecritical services and other forms of QoS (IPTV, VoIP, gaming etc.) are to be eliminated. Thirdly, various transport groups and various groups of products (IPTV, VOD, interactive services such as gaming etc.) characterised by specific technical features of performance and features of quality are to be composed and marketed by the ISP to the content provider, to the service provider and to the consumer. In order to guarantee such QoS on the Internet, the ISP have to agree on cross-network technical standards for QoS.Both the European Commission and the German legislator, being competent for transposing the EU directives on telecommunications into national law, take a careful approach to the issue of network neutrality. For the case that ISP limit the access or the use of services the directives provide for transparency rules aimed at guaranteeing the comsumer’s freedom of choice. Beyond that, minimum requirements for the quality of service can be set in order to prevent impairment of services and hindrance or slowdown of data traffic in the nets. Hereby consumers are protected comprehensively. As it stands more regulation is not necessary. The risk of discrimination coming from vertical integration can be addressed by means of sector-specific regulatory law (cf. § 42 German Telecommunications Act - TKG) and by means of general competition law (cf. §§ 19, 20 Act Against Restraints of Competition - GWB, Article 102 Treaty on the Functioning of the European Union - AEUV). The composition of the various QoS transport groups and marketing to the content provider, to the service provider and to the consumer do not as such give rise to a need for regulation. In fact, the formation of (cross-network) QoS transport groups constitutes a pre-condition for consumers booking such QoS on the Internet. However, all content providers and service providers seeking access to QoS transport groups must have such access according to non-discriminatory terms. Such non-discriminatory access can be adequately guaranteed by sector-specific regulatory law and general competition law. At present, subject to the condition of there being a robust and dynamically developing best effort area in addition to QoS transport groups, more regulation is not necessary. However, it cannot be predicted whether the different QoS transport groups will emerge or not. Regulation „at random“ is as pointless as „symbolic regulation“.

Service Quality Perceptions of Solely Loyal Customers

2011 ◽  
Vol 53 (6) ◽  
pp. 793-810 ◽  
Author(s):  
Swetlana Bogomolova
Keyword(s):  
Quality Of Service ◽  
Service Quality ◽  
Service Provider ◽  
Service Providers ◽  
Cross Sectional ◽  
Quality Perceptions ◽  
Multiple Provider ◽  
And Control ◽  
Loyal Customers

Having more solely loyal customers (those who only use one supplier) is an aspiration for most service providers. Yet, it is unclear whether, or in what way, solely loyal customers differ from customers whose loyalty is divided between more than one service provider. One loyalty indicator is a consumer's evaluation of the quality of service they receive. Using seven sets of cross-sectional data, this research reveals that solely loyal customers give, on average, approximately 10% more positive service quality evaluations than customers of the same provider who also use other providers. The implication of this finding for market researchers and practitioners is that service quality scores could be moderated by the distribution of solely loyal and multiple-provider users in a given sample. Therefore, every service quality survey should measure how many providers a customer uses and control for the proportion of solely loyal customers when tracking change using cross-sectional samples.

Streaming Coded Video in P2P Networks

2021 ◽  
pp. 1304-1339
Author(s):  
Muhammad Salman Raheel ◽  
Raad Raad
Keyword(s):  
Quality Of Service ◽  
Approximation Algorithms ◽  
Video Coding ◽  
State Of The Art ◽  
Scalable Video Coding ◽  
The State ◽  
P2p Network ◽  
Scalable Video ◽  
Adequate Quality

This chapter discusses the state of the art in dealing with the resource optimization problem for smooth delivery of video across a peer to peer (P2P) network. It further discusses the properties of using different video coding techniques such as Scalable Video Coding (SVC) and Multiple Descriptive Coding (MDC) to overcome the playback latency in multimedia streaming and maintains an adequate quality of service (QoS) among the users. The problem can be summarized as follows; Given that a video is requested by a peer in the network, what properties of SVC and MDC can be exploited to deliver the video with the highest quality, least upload bandwidth and least delay from all participating peers. However, the solution to these problems is known to be NP hard. Hence, this chapter presents the state of the art in approximation algorithms or techniques that have been proposed to overcome these issues.

Programming Interfaces for Realtime and Cloud-Based Computing

2011 ◽  
pp. 41-58
Author(s):  
Gregory Katsaros ◽  
Tommaso Cucinotta
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
State Of The Art ◽  
New Products ◽  
The State ◽  
New Challenges ◽  
Real Time Computing ◽  
Programming Interfaces ◽  
Real Time Application

The appearance of different business roles according to this classification, potentially with differing interests, introduces new challenges with regard to the tools and mechanisms put in place in order to enable the efficient provisioning of services. Security, Quality of Service (QoS) assurance, and real-time capabilities are just a few issues that the providers are trying to tackle and integrate within the new products and services that they offer. In this chapter, we make an overview of the approaches that aim to APIs for real-time computing. In the first part of this chapter, several Real-Time Application Interfaces will be presented and compared. After that, we will document the state-of-the-art regarding the Cloud APIs available and analyze the architecture and the technologies that they support.

Using fuzzy gap analysis to measure service quality of medical tourism in Taiwan

2015 ◽  
Vol 28 (7) ◽  
pp. 648-659 ◽  
Author(s):  
Li-Hsing Ho ◽  
Shu-Yun Feng ◽  
Tieh-Min Yen
Keyword(s):  
Quality Of Service ◽  
Service Quality ◽  
Service Provider ◽  
Medical Tourism ◽  
Gap Analysis ◽  
Service Providers ◽  
Service Level ◽  
Content Type ◽  
Tourism Service

Purpose – The purpose of this paper is intended to create a model to measure quality of service, using fuzzy linguistics to analyze the quality of service of medical tourism in Taiwan so as to find the direction for improvement of service quality in medical tourism. Design/methodology/approach – The study developed fuzzy questionnaires based on the characteristics of medical tourism quality of service in Taiwan. Questionnaires were delivered and recovered from February to April 2014, using random sampling according to the proportion of medical tourism companies in each region, and 150 effective samples were obtained. The critical quality of service level is found through the fuzzy gap analysis using questionnaires examining expectations and perceptions of customers, as the direction for continuous improvement. Findings – From the study, the primary five critical service items that improve the quality of service for medical tourism in Taiwan include, in order: the capability of the service provider to provide committed medical tourism services reliably and accurately, facility service providers in conjunction with the services provided, the cordial and polite attitude of the service provider eliciting a sense of trust from the customer, professional ability of medical (nursing) personnel in hospital and reliability of service provider. Originality/value – The contribution of this study is to create a fuzzy gap analysis to assess the performance of medical tourism service quality, identify key quality characteristics and provide a direction for improvement and development for medical tourism service quality in Taiwan.

scholarly journals THE BEHAVIOURAL CONSEQUENCES OF PERCEIVED SERVICE QUALITY: A STUDY OF THE INDIAN TELECOMMUNICATION INDUSTRY

2020 ◽  
Vol 21 (1) ◽  
pp. 360-372
Author(s):  
Deepika Jhamb ◽  
Amit Mittal ◽  
Pankaj Sharma
Keyword(s):  
Quality Of Service ◽  
Service Quality ◽  
Customer Service ◽  
Service Provider ◽  
Service Providers ◽  
Strong Relationship ◽  
Perceived Service Quality ◽  
Behavioural Intentions ◽  
Customer Expectations

The telecom industry in India has witnessed substantial growth over the last decade. Rapid growth of telecommunications is opening up the doors for many telecom players from Europe, Asia and other parts of the world, resulting in increased competition and tariff reductions. In the present competitive environment, the services perceived by the customers and their behavioural intentions play a pivotal role in the customer switching process among service providers. With the changing expectations of service quality, it becomes imperative to discover the gap between customer expectations and customer perception. In this context, the aim of the present study is to identify the existing gap between customer expectations and perceptions and investigate the relationship between post-experience perception of service quality and customers’ behavioural intentions. The data was collected from 500 customers in Delhi NCR, India. Paired sample t-test and multiple correlation analysis were performed. The results of the study points out the key areas wherein the service gaps are considerably high such as reliability and responsiveness. The customer behavioural intentions, such as “Complain to customer service if a problem occurs”, “Switch to another service provider” and “Reducing the usage with a particular service provider”, have shown a strong relationship with quality of service. The findings of the study confirm that the perceptions of customers regarding the quality of service received definitely have an impact on their behaviour.

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