Mobiware: QOS-aware middleware for mobile multimedia communications
HPN '97 Proceedings of the IFIP TC6 seventh international conference on High performance netwoking VII
An active service framework and its application to real-time multimedia transcoding
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
Vertical handoffs in wireless overlay networks
Mobile Networks and Applications - Special issue: mobile networking in the Internet
An end-to-end approach to host mobility
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
SPAND: shared passive network performance discovery
USITS'97 Proceedings of the USENIX Symposium on Internet Technologies and Systems on USENIX Symposium on Internet Technologies and Systems
Application level hand-off support for mobile media transcoding sessions
NOSSDAV '02 Proceedings of the 12th international workshop on Network and operating systems support for digital audio and video
Location Selection for Active Services
Cluster Computing
Cache architecture for on-demand streaming on the Web
ACM Transactions on the Web (TWEB)
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Sometimes a client that receives a multimedia stream from a server can change the connection used to transfer the data. There may be multiple paths or multiple servers, but a switch from one connection to another requires a handoff. During such a handoff, the player (of the video and/or audio stream) should be fed with a constant data stream so that they player does not have to stop. Handoffs can be used in addition to adaptive (frame-dropping) filters to improve the quality of multimedia streams as received by the client.This paper investigates the influence of several factors on the quality of the multimedia stream during the handoff: the time needed to establish the connection to the new server, the size and the fill degree of the client buffer, the length of the synchronization phase (where both the old and the new connection are sending) and the most appropriate start packet for the new connection. The evaluation showsm that a handoff can be a viable solution if an appropriate strategy is chosen to phase over from the old connection to the new one.