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The design and implementation of a quality-based handover trigger
RISE - Research Institutes of Sweden, ICT, SICS.ORCID-id: 0000-0001-8338-5513
RISE., Swedish ICT, SICS.
2006 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Wireless connectivity is needed to bring IP-based telephony into serious competition with the existing cellular infrastructure. However it is well known that voice quality problems can occur when used with unlicensed spectrum technologies such as the popular IEEE 802.11 standards. The cellular infrastructure could provide alternative network access should users roam out of 802.11 coverage or if heavy traffic loads are encountered in the 802.11 cell. Therefore, our goal is to design a handover mechanism to switch ongoing calls to the cellular network when the 802.11 network cannot sustain sufficient call quality. We have investigated load and coverage scenarios and designed, implemented and evaluated the performance of an 802.11 quality-based trigger for the handover of voice calls to the cellular network. We show that our predictive solution addresses the coverage problem and evaluate it within a real setting.

Ort, förlag, år, upplaga, sidor
2006, 1. , s. 12
Nyckelord [en]
VoIP, 802.11, voice, quality
Nationell ämneskategori
Data- och informationsvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-21176OAI: oai:DiVA.org:ri-21176DiVA, id: diva2:1041210
Konferens
5th International IFIP-TC6 Networking Conference
Projekt
E-NEXTTillgänglig från: 2016-10-31 Skapad: 2016-10-31 Senast uppdaterad: 2018-08-15Bibliografiskt granskad

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