Multipath Routing with Layered Coded Video to Provide QoS for Video-Streaming Over Manets

Frias, V.C.; Delgado, G.D.; Igartua, Mónica Aguilar

doi:10.1109/icon.2006.302583

Cited by 19 publications

(17 citation statements)

References 7 publications

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“…This will help source nodes to take proper routing decisions. Simulation results validate the proposal and show the improvement on standard DSR protocol as well as on a previous static version named static-MMDSR (s-MMDSR) [3].…”

Section: Introductionsupporting

confidence: 55%

“…We proved in a previous work [3] that it is not worthwhile to arrange more than three paths simultaneously in a multipath scheme, due to excessive overhead increase and small improvement. Similar works arrived to same conclusion, e.g.…”

Section: Multipath Schemementioning

confidence: 93%

“…In this way, our proposal copes with the dynamic nature of MANETs which may produce frequent link breakages and topology variations through time as a consequence. In a previous static version of our protocol, s-MMDSR (static-MMDSR) [3], this routing period was fixed to 10 sec., as it was shown to be a proper value from numerous simulations performed for typical scenarios. In the current updated version, a-MMDSR (adaptive-MMDSR), the routing period changes dynamically depending on the path error probabilities (PEPs) of the forwarding routes.…”

Section: Mmdsr Operationmentioning

confidence: 99%

“…In this section we carry out a performance evaluation of our proposal a-MMDSR compared to the static version s-MMDSR [3] and to plain DSR [9]. Simulation settings are shown in Table 3.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…TXOP equal to 0 indicates that only one packet is transmitted per interval. I frames are sent through the highest priority AC[0], P frames through AC [1], B frames through AC [2] and interfering traffic uses the lowest priority AC [3].…”

Section: Performance Evaluationmentioning

confidence: 99%

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Self-configured multipath routing using path lifetime for video-streaming services over Ad Hoc networks

Igartua

Frias

2010

Computer Communications

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The increasing spread of mobile nodes along with the technical advances in multi-hop MANETs (Mobile Ad hoc NETworks) make this kind of networks an important type of access network of next generation. The demand of multimedia services from these networks is expected to significantly grow in the next years. Multimedia services, though, require the provision of Quality of Service (QoS). Nevertheless, the highly dynamic nature of MANETs, the energy constraints, the lack on centralized infrastructure and the variable link capacity, makes the QoS provision over MANETs a matter that challenges attention. These features make self-configuration and system adaptation questions of major importance when developing a QoS-aware framework. To tackle this issue, we have designed a-MMDSR (adaptive-Multipath Multimedia Dynamic Source Routing), a multipath routing protocol able to self-configure dynamically depending on the state of the network. The approach includes cross-layer techniques especially designed to improve the end-to-end performance of video-streaming services over IEEE 802.11e Ad Hoc networks. Besides, a straightforward analytical model to estimate the path error probability is presented. This model is used by the routing scheme to estimate the lifetime of the paths. In this way, proper proactive decisions can be made before the paths get broken. The model simplicity is appropriate for low capacity wireless devices. Simulation results validate the proposal and show the improvement on standard DSR (Dynamic Source Routing) and on a previous static version.

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Section: Introductionsupporting

confidence: 55%

Section: Multipath Schemementioning

confidence: 93%

Section: Mmdsr Operationmentioning

confidence: 99%

“…In this section we carry out a performance evaluation of our proposal a-MMDSR compared to the static version s-MMDSR [3] and to plain DSR [9]. Simulation settings are shown in Table 3.…”

Section: Performance Evaluationmentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

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Self-configured multipath routing using path lifetime for video-streaming services over Ad Hoc networks

Igartua

Frias

2010

Computer Communications

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Challenges and techniques for video streaming over mobile ad hoc networks

et al. 2010

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Developments in mobile devices and wireless networking provide the technical platform for video streaming over mobile ad hoc networks (MANETs). However, efforts to realize video streaming over MANETs have met many challenges, which are addressed by several different techniques. Examples include cross-layer optimization, caching and replication, and packet prioritization. Cross-layer optimization typically leverages multiple description video coding and multipath routing to provide the receiver(s) sufficient video quality. Caching and replication add tolerance to disruptions and partitioning. In this paper, we identify the challenges of realizing video streaming over MANETs, and analyze and classify the proposed techniques. Since 65 % of the identified involve cross-layering design, we study the distribution of joint optimization and parameter exchanges. Due to the importance and complexity of evaluating the techniques, we analyze the common methods, indicating that the research domain suffers from a problem of comparability.

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