Quantifying Skype user satisfaction

Chen, Kuan-Ta; Huang, Chun-Ying; Huang, Polly; Lei, Chin-Laung

doi:10.1145/1159913.1159959

Cited by 128 publications

(92 citation statements)

References 8 publications

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“…The flow duration for all traffic profiles of 4 minutes was chosen based on previous studies of application behaviour: Skype call durations are between 2 -6 minutes for the majority of the monitored sessions in [4], [5], and average YouTube sessions are 3-5 minutes [11], [26] (see below).…”

Section: B Workloads: Packet Flowsmentioning

confidence: 99%

Application Level Energy and Performance Measurements in a Wireless LAN

Tauber

Bhatti

2011

2011 IEEE/ACM International Conference on Green Computing and Communications

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Abstract-We present an experimental evaluation of energy usage and performance in a wireless LAN cell based on a testbed using the 5GHz ISM band for 802.11a and 802.11n. We have taken an application-level approach, by varying the packet size and transmission rate at the protocol level and evaluating energy usage across a range of application transmission rates using both large and small packet sizes. We have observed that both the application's transmission rate and the packet size have an impact on energy efficiency for transmission in our testbed. We also included in our experiments evaluation of the energy efficiency of emulations of YouTube and Skype flows, and a comparison with Ethernet transmissions.

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Section: B Workloads: Packet Flowsmentioning

confidence: 99%

Application Level Energy and Performance Measurements in a Wireless LAN

Tauber

Bhatti

2011

2011 IEEE/ACM International Conference on Green Computing and Communications

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“…More substantial loss rates or loss bursts lead to unintelligible speech and therefore require applying error control mechanisms, all of which increase the overall delay. As it was found for skype users that delay has a less significant impact on perceived speech quality than losses [CHHL06], some flexibility for packet repair exists beyond the guidelines of G.114 [Int], so that loss bursts and short-term outages might be concealed. 2 Nevertheless, as losses, delays or the frequency of disconnections grow, interactive voice becomes essentially unusable.…”

Section: The (Mobile) Internet Today: When Best Effort Is Not Enoughmentioning

confidence: 99%

Towards More Adaptive Voice Applications

Ott

2010

Lecture Notes in Computer Science

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Abstract. With the Internet designed to provide best-effort packet transmission, applications are expected to adapt dynamically to the operating conditions observed in the network. For this purpose, congestion control mechanisms have been devised for various transport and (partly) application protocols, and application programs may present, e.g., data rate information to the user. While these mechanisms work well for elastic applications (such as file transfer), the perceived performance of real-time applications may degrade quickly if a minimum required quality of service cannot be achieved. We argue that the current interpretation of adaptation specifically of real-time applications is too narrow and present a framework for expanding the scope of end-to-end adaptation, using the case study of voice communications. Our approach is general in nature, but should especially support communication in mobile environments.

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“…Some traffic engineering studies [138] unveil that Skype uses iLBC 35 [176], iSAC 36 [177]. [178] indicates that in Skype iSAC is one on the list for end-to-end calls, provides open interfaces and standards, which allow mobile users to access the service in a simple and cheap fashion. 35 Internet Low Bitrate Codec (iLBC) is a royalty-free narrowband speech developed by Global IP Solutions (GIPS) target for VoIP applications, streaming audio, and messaging.…”

Section: Comparison Of Cbm-icc With Other Servicesmentioning

confidence: 99%

Consumer-Oriented Incoming Call Connection Service for a Ubiquitous Consumer Wireless World

Ганчев

O’Dróma

Wang

2008

Wireless Pers Commun

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This thesis proposes a novel consumer-oriented Incoming Call Connection (ICC) service as an important enabling infrastructural component of the recently proposed ubiquitous consumer wireless world (UCWW), a new Consumer-centric Business Model (CBM) environment for wireless communications. The ICC solution proposed here will be offered by third-party providers who are autonomous of the access network providers. Compared to the present ICC service in the legacy subscriber-based networks, the consumeroriented ICC service will offer to mobile users greater flexibility and management control over incoming calls, enable users to receive incoming calls via multiple access networks/providers by means of a single identity, support user-driven, seamless, network-transparent Hot Access network Change (HAC), largely eliminate roaming charges and develop a new wireless networking business opportunity among other ben- Furthermore, the thesis elaborates a generic CBM-ICC service scenario, which shows how the CBM-ICC service offers to mobile users greater freedom and operation control over incoming calls, enables the novel attribute of users being empowered to receive incoming calls simultaneously, and otherwise, from various homogeneous and heterogeneous access networks, owned by the same or different providers, and enables user-driven HAC on active calls in keeping with, or matched to, user's Always Best Connected and Best Served (ABC&S) policies. A CBM-ICC proof-of-concept system-level testbed is implemented to perform experimental tests, probe different communications scenarios, evaluate the service performance, and further elaborate the service architecture. In this, approaches towards evaluating the performance of the CBM-ICC service based on designed testbed are elaborated, and sample numerical results are presented and analyzed. DeclarationThis thesis is presented in fulfillment of the requirements for the degree of Doctorate of Philosophy. This thesis has not been submitted to any other University or higher education institution, or for any other academic award in this University. Where use has been made of the work of other people it has been fully acknowledged and fully referenced. Signed:Date:Ohana means family.Family means nobody gets left behind, or forgotten.Dedicated to Mum, Dad and my wife.Without your love and support I would not be at this point today.Dedicated to the loving memory of my grandma.

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Quantifying Skype user satisfaction

Cited by 128 publications

References 8 publications

Application Level Energy and Performance Measurements in a Wireless LAN

Application Level Energy and Performance Measurements in a Wireless LAN

Towards More Adaptive Voice Applications

Consumer-Oriented Incoming Call Connection Service for a Ubiquitous Consumer Wireless World

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