Towards scalable and affordable content distribution services

Plagemann, Thomas; Goebel, Vera; Mathy, Laurent; Race, Nicholas; Zink, Michael; Griwodz, Carsten; Halvorsen, Pål

doi:10.1109/contel.2003.176925

Cited by 2 publications

(2 citation statements)

References 29 publications

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“…To address this problem, recent studies focus on designing new solutions that are concerned with the unique features of real-time media. However, without the essential quality-of-service (QoS) provisioning, even these media-aware approaches struggle to satisfy the rigid requirements, if the network becomes physically incapable or it performs poorly for a prolonged amount of time [11]. In other words, clever design has its limitations.…”

Section: Audio-video Distributionmentioning

confidence: 97%

VideoMsg: A Wireless Video Distribution System

Khedo

Hang

2006

2006 International Conference on Wireless and Mobile Communications (ICWMC'06)

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One of the key technological challenges to advance our knowledge-based society is the development of mobile multimedia communication systems and networks. With rapid advances in wireless packet networking technology, it is becoming possible to provide mobile users not only with data, voice, but also with video communication services. Many emerging mobile applications require the playback of video on the mobile hosts, and today's wireless networks are getting ready to provide sufficient bandwidth for support of compressed video transmission. With the increase in the bandwidth of wireless channels and the computing power of the mobile devices, it is expected that video service will be offered for wireless networks in the near future.In this paper we are especially interested in the issue of wireless video multicast, in which there may be hundreds and thousands of mobile hosts receiving the same video from one sender. Reliable video distribution over WLANs is still a challenging problem to solve. Transport of video content is very sensitive to bandwidth variability, delay jitter, packet error rates and types of packets in which errors occur. We present VideoMsg an audio-video distribution system over WLANs which provides the best combination of technologies for the transmission of video information to heterogeneous mobile users.

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Section: Audio-video Distributionmentioning

confidence: 97%

VideoMsg: A Wireless Video Distribution System

Khedo

Hang

2006

2006 International Conference on Wireless and Mobile Communications (ICWMC'06)

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“…In addition, they need to be able to deal with different user requirements regarding aspects such as cost and perceived perceptual quality. To accomplish this, sources and aggregators support a number of different configurations of a channel (e.g., [28,51]). Mobile hosts can potentially use these configurations to receive a channel from an aggregator, while an aggregator can use them to receive a channel from a source.…”

Section: Configurationsmentioning

confidence: 99%

Delivering Live Multimedia Streams to Mobile Hosts in a Wireless Internet with Multiple Content Aggregators

et al. 2005

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Abstract.We consider the distribution of channels of live multimedia content (e.g., radio or TV broadcasts) via multiple content aggregators. In our work, an aggregator receives channels from content sources and redistributes them to a potentially large number of mobile hosts. Each aggregator can offer a channel in various configurations to cater for different wireless links, mobile hosts, and user preferences. As a result, a mobile host can generally choose from different configurations of the same channel offered by multiple alternative aggregators, which may be available through different interfaces (e.g., in a hotspot). A mobile host may need to handoff to another aggregator once it receives a channel. To prevent service disruption, a mobile host may for instance need to handoff to another aggregator when it leaves the subnets that make up its current aggregator's service area (e.g., a hotspot or a cellular network). In this paper, we present the design of a system that enables (multi-homed) mobile hosts to seamlessly handoff from one aggregator to another so that they can continue to receive a channel wherever they go. We concentrate on handoffs between aggregators as a result of a mobile host crossing a subnet boundary. As part of the system, we discuss a lightweight application-level protocol that enables mobile hosts to select the aggregator that provides the 'best' configuration of a channel. The protocol comes into play when a mobile host begins to receive a channel and when it crosses a subnet boundary while receiving the channel. We show how our protocol can be implemented using the standard IETF session control and description protocols SIP and SDP. The implementation combines SIP and SDP's offer-answer model in a novel way.

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Towards scalable and affordable content distribution services

Cited by 2 publications

References 29 publications

VideoMsg: A Wireless Video Distribution System

VideoMsg: A Wireless Video Distribution System

Delivering Live Multimedia Streams to Mobile Hosts in a Wireless Internet with Multiple Content Aggregators

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