Internet Low Bit Rate Codec (iLBC)

Hagen, R.; Astrom, Henrik; Andersen, Søren Vang; Linden, J.; Kleijn, W. Bastiaan; Duric, Alan

doi:10.17487/rfc3951

Cited by 80 publications

(37 citation statements)

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“…o For narrowband: Speex (NB) [Speex], and internet low bit-rate codec (iLBC)(*) [RFC3951] o For wideband: Speex (WB) [Speex] The codecs marked with (*) have additional licensing restrictions, but the codec to be developed should still not perform significantly worse. In addition to the quality targets listed above, a desirable objective is for the codec quality to be no worse than Adaptive Multi-Rate (AMR-NB) and Adaptive Multi-Rate Wideband (AMR-WB).…”

Section: Operating Spacementioning

confidence: 99%

Requirements for an Internet Audio Codec

Valin¹,

Vos²

2011

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Section: Operating Spacementioning

confidence: 99%

Requirements for an Internet Audio Codec

Valin¹,

Vos²

2011

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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.…”

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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“…In order to quantitatively evaluate this effect, we analyze next the effects of the NEMO basic support protocol and MIRON, comparing it with plain IPv4 and IPv6, in a VoIP communication using the widely utilized Skype 7 application. Skype uses the Internet low bit rate codec (iLBC) [28], which is a free speech codec suitable for robust voice communication over IP. The codec is designed for narrowband speech and results in a payload bit rate of 13.33 kb/s with an encoding frame length of 30 ms and 15.20 kb/s with an encoding length of 20 ms. Table I shows the packet overhead and the bandwidth consumed by a VoIP communication using UDP/RTP and the iLBC codec, for plain IPv4, plain IPv6, the NEMO basic support protocol, and MIRON.…”

Section: B Analytical Evaluationmentioning

confidence: 99%