The design and implementation of a quality-based handover trigger
2006 (English)In: Lecture Notes in Computer Science, ISSN 0302-9743, E-ISSN 1611-3349, ISSN 0302-9743, Vol. 3976, 580-591 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2006. Vol. 3976, 580-591 p.
802.11-Cellular convergence, Quality prediction, VoIP
IdentifiersURN: urn:nbn:se:kth:diva-14298DOI: 10.1007/11753810_49ISI: 000238114800049ScopusID: 2-s2.0-33745884088OAI: oai:DiVA.org:kth-14298DiVA: diva2:332083
5th International IFIP-TC6 Networking Conference, Networking 2006; Coimbra; Portugal; 15 May 2006 through 19 May 2006
QC 201008022010-08-022010-08-022014-04-14Bibliographically approved