Dimensioning Method for Conversational Video Applications in Wireless Convergent Networks

Fernandez-Duran, A.; Leal, Raquel Perez; Alonso, J.I.

doi:10.1155/2008/328089

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Then, a node periodically estimates its staggered collision probability and dynamically adapts the transmission packet size within the range of [L min , L mtu ]. Referring to [8], L min is taken to be 50 bytes, while L mtu is limited by the MTU size of 802.11 WLAN. As shown in lines (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) of Table 1, the packetization strategy applies the principle of additive increase and multiplicative decrease (AIMD) to adapt the transmission packet size.…”

Section: Adaptive Packetization Strategymentioning

confidence: 99%

“…Referring to [8], L min is taken to be 50 bytes, while L mtu is limited by the MTU size of 802.11 WLAN. As shown in lines (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) of Table 1, the packetization strategy applies the principle of additive increase and multiplicative decrease (AIMD) to adapt the transmission packet size. That is, if the current estimate of staggered collision probability P SC is greater than the threshold θ SC , the packet size L is halved to reduce the impact of staggered collisions.…”

Section: Adaptive Packetization Strategymentioning

confidence: 99%

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Adaptive Packetization for Conversational Video Service over IEEE 802.11 WLANs with Hidden Terminals

Song

2010

Wireless Pers Commun

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For IEEE 802.11-based wireless local area networks (WLANs), due to inherent random access mechanisms, it is very challenging to provision video services, which are subject to very stringent quality-of-service (QoS) constraints. Collision and fading are two main sources of packet loss in WLANs and as such, both are affected by the packetization at the medium access control (MAC) layer. While a larger packet is preferred to balance protocol header overhead, a shorter packet is less vulnerable to packet loss due to channel fading errors or staggered collisions in the presence of hidden terminals. In this paper, we exploit estimate of collision probabilities to adapt packetization for video frames. We first show analytically that the effective throughput is a unimodal function of packet size when considering both channel fading and staggered collisions. We then design an additive increase and multiplicative decrease (AIMD) packetization strategy which adjusts the MAC-layer packet size based on local estimate of staggered collision probability. It is demonstrated that the proposed approach can greatly improve the effective throughput of WLAN and reduce video frame transfer delay.

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Section: Adaptive Packetization Strategymentioning

confidence: 99%

Section: Adaptive Packetization Strategymentioning

confidence: 99%

Adaptive Packetization for Conversational Video Service over IEEE 802.11 WLANs with Hidden Terminals

Song

2010

Wireless Pers Commun

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An Emergency Medical Communications System by Low Altitude Platform at the Early Stages of a Natural Disaster in Indonesia

Qiantori

Sutiono

Hariyanto³

et al. 2010

J Med Syst

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A natural disaster is a consequence of a natural hazard, such as a tsunami, earthquake or volcanic eruption, affecting humans. In order to support emergency medical communication services in natural disaster areas where the telecommunications facility has been seriously damaged, an ad hoc communication network backbone should be build to support emergency medical services. Combinations of requirements need to be considered before deciding on the best option. In the present study we have proposed a Low Altitude Platform consisting of tethered balloons combined with Wireless Fidelity (WiFi) 802.11 technology. To confirm that the suggested network would satisfy the emergency medical service requirements, a communications experiment, including performance service measurement, was carried out.

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Iterative multiple-symbol differential detection of differential LDPC codes

Handa

Sasamori

2010

2010 International Symposium on Intelligent Signal Processing and Communication Systems

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Dimensioning Method for Conversational Video Applications in Wireless Convergent Networks

Cited by 5 publications

References 9 publications

Adaptive Packetization for Conversational Video Service over IEEE 802.11 WLANs with Hidden Terminals

Adaptive Packetization for Conversational Video Service over IEEE 802.11 WLANs with Hidden Terminals

An Emergency Medical Communications System by Low Altitude Platform at the Early Stages of a Natural Disaster in Indonesia

Iterative multiple-symbol differential detection of differential LDPC codes

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