This paper shows how a PDA (Personal Digital Assstant)can be converted into an audio source within a private network or the web, providing capture, compression and streaming of audio as a real-time mobile service. Once the sound around the PDA has been captured and compressed to mp3 format, the service allows it to be broadcast to a Streaming Server. Once the audio reaches the Streaming Server,...

This paper presents a distributed architecture for the provision of seamless and responsive mobile multimedia services. This architecture allows its user applications to use concurrently all the wireless network interface cards (NICs) a mobile terminal is equipped with. In particular, as mobile multimedia services are usually implemented using the UDP protocol, our architecture enables the tran...

This paper focuses on the optimized transmission of multimedia sequences over vehicular ad-hoc networks (VANETs). Among the main drawbacks of the high node mobility of the vehicular scenario are the high channel loss rate, burst length and intermittent connectivity. To allow real-time streaming of media sequences in such a scenario, we propose a technique based on forward error correction (FEC)...

When an RTP receiver joins a multicast session, it may need to acquire and parse certain Reference Information before it can process any data sent in the multicast session. Depending on the join time, length of the Reference Information repetition (or appearance) interval, size of the Reference Information, and the application and transport properties, the time lag before an RTP receiver can us...

Multicast streaming has been extensively investigated to tackle the network bandwidth challenge. However, the ubiquitous deployment of IP multicast on the Internet is expected only after several years to come due to the manageability and scalability problems. We study a pragmatic solution to enhance the feasibility of multicast media streaming by focusing on an one-to-many streaming over the so...

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This paper intends to introduce the development of a terminal agent for QoS measurement that is suitable for an NGN environment, and to summarize the results of its performance test. Using the terminal agent for service quality measurement, it is possible to measure the QoE-based end-toend service quality of voice phone, video phone, and VoD services. In addition, the terminal agent, installed ...

& h 6 £ x+ þ A F Ò q t] j# Q\ ¦ s 6 xô Ç 1 l xl o) a { 9 @ / p n # Q Û ¼à Ôo b ç Abstract A new inter-client synchronization framework for one-to-many (i.e., multicast) media streaming is proposed employing a server-client coordinated adaptive playout control. The proposed adaptive player controls the playback speed of audio and video by adopting the timescale modification of audio. Based on t...

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