An application-layer approach to seamless mobile multimedia communication
2006 (English)In: IEEE Transactions on Network and Service Management, ISSN 1932-4537, E-ISSN 1932-4537, Vol. 3, no 1, 33-42 p.Article in journal (Refereed) Published
Providing seamless IP mobility support is one of the most challenging problems towards a world of mobile and ubiquitous multimedia communication. This paper proposes an application-layer framework based on the Session Initiation Protocol and the Resilient Mobile Socket to provide mobility support for distributed multimedia applications. As a part of the framework the paper describes a new handover strategy called Competition-based Soft-Handover Management that uses simulcast to improve quality of service and to seamlessly hand over multimedia traffic to the network interface that currently offers better network characteristics. In short, during a handover packets are simulcasted through all available network interfaces, and when the packets are received by the remote end-point, they are merged back into one stream. As each network connection competes with other connections in contributing to the merged stream at the remote end-point, the handover process can be viewed as a competition where the connection that contributes most is selected after the handover. As a proof of concept, the framework has been integrated into Marratech, which is a commercially available audio/video group communication application. By using network emulators, the paper demonstrates how the framework can be used to improve QoS, compare end-to-end performance, and perform lossless handovers while reducing redundant packets.
Place, publisher, year, edition, pages
2006. Vol. 3, no 1, 33-42 p.
Research subject Mobile and Pervasive Computing
IdentifiersURN: urn:nbn:se:ltu:diva-6034DOI: 10.1109/TNSM.2006.4798305Local ID: 43a7eb40-a08e-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-6034DiVA: diva2:978910
Validerad; 2006; 20061025 (ysko)2016-09-292016-09-29Bibliographically approved