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检索条件"任意字段=3rd ACM Workshop on Wireless Multimedia Networking and Performance Modeling"

共 44 条记录，以下是1-10 订阅

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A Smooth Playback Technique for Progressively Encoded multimedia Streams over the Internet with wireless Connections

A Smooth Playback Technique for Progressively Encoded Multim...

引用

3rd acm workshop on wireless multimedia networking and performance modeling

作者： Boukerche, Azzedine Feng, Jing Pazzi, Richard W. N. Univ Ottawa SITE PARADISE Res Lab Ottawa ON K1N 6N5 Canada

ISBN: (纸本)9781595938046

Recent advances in wireless communication and multimedia processing allow mobile hosts access to multimedia content on the Internet via wireless connections. However, due to the best-effort character of the Internet and the limited resources available in wireless systems, there are many new issues and trade-offs that require discussion. Among these issues, the smooth playback of multimedia streams is an important topic. In this paper, we present a smooth playback technique for progressive multimedia streams over the Internet with wireless connections. The proposed technique employs progressive encoding techniques for multimedia streams and uses a modified MoSync algorithm to synchronize the streams at different levels of quality. Experimental results show that this technique can offer a high QoS for wireless multimedia systems.

关键词： multimedia synchronization wireless communication progressive encoding

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A Framework for QoS-aware multimedia Service Selection for wireless Clients

A Framework for QoS-aware Multimedia Service Selection for W...

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3rd acm workshop on wireless multimedia networking and performance modeling

作者： Hossain, M. Shamim Alamri, Atif El Saddik, Abdulmotaleb Univ Ottawa Sch Informat Technol & Engn Multimedia Commun Res Lab MCRLAB Ottawa ON K1N 6N5 Canada

ISBN: (纸本)9781595938046

With the popularity of ubiquitous multimedia access, there is an increasing demand for appropriate multimedia service selection that satisfies the QoS constraints of the wireless clients. However, due to resource limitations of wireless clients, it is a challenge to select an appropriate service, which is suitable for wireless devices based on their respective QoS demands. To overcome this challenge, we propose a novel QoS-aware multimedia service selection framework, which inherits the adoption of nature-inspired path selection behavior in the service selection. We extend the nature-inspired algorithm to support QoS for multimedia service selection. We also measure the component transcoding service reliability as well as the system reliability.

关键词： Quality of service transcoding service reliability multimedia service selection

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Evaluation of an Ant Colony Optimization based Scheduler for the Transmission of multimedia Traffic in the 802.11e EDCA

Evaluation of an Ant Colony Optimization based Scheduler for...

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3rd acm workshop on wireless multimedia networking and performance modeling

作者： Ditze, Michael Univ Paderborn Paderborn Germany

ISBN: (纸本)9781595938046

The transmission of time-sensitive multimedia traffic across unreliable wireless network links requires adaptive scheduling that respects substantial resource fluctuations and irregular traffic arrival patterns. As finding a near-optimal adaptive transmission schedule, in our case for the prioritized access categories of the 802.11e Enhanced Distributed Channel Access (EDCA), is a combinatorial optimization problem, we introduce an Ant Colony Optimization (ACO) based meta heuristic for scheduling multimedia traffic. ACO is known to develop near-optimal solutions at the expenses of additional administrative and computational overhead. We compare ACO scheduling to a deterministic scheduling approach specifically designed for the needs of multimedia scheduling called MLLF. The aim of this paper is to evaluate the feasibility of ACO approaches for multimedia scheduling in different scenarios and to conclude on the effectiveness of the selected deterministic MLLF approach in comparison to a near-optimal solution.

关键词： multimedia EDCA Scheduling Ant Colony Optimization Least Laxity First

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Delay-Aware Interleaving and Forward-Error Correction for Video over wireless: A Bluetooth Case Study

Delay-Aware Interleaving and Forward-Error Correction for Vi...

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3rd acm workshop on wireless multimedia networking and performance modeling

作者： Razavi, Rouzbeh Fleury, Martin Ghanbari, Mohammed Sadeghzadeh, Mahta Univ Essex Colchester CO4 3SQ Essex England

ISBN: (纸本)9781595938046

Packet-level interleaving combined with FEC has tended to be disregarded for video streaming over wireless, because of the delay introduced by the need to assemble the interleaved packets. However, packet level interleaving has the ability to cope with lengthy bursts of error on a wireless channel. This paper proposes adapting the degree of packet interleaving according to: the display deadlines of packets;transmit buffer occupation;and anticipated video input to the wireless channel. Conservative adaptation is applied to avoid missed deadlines and the picture type importance is taken into account. A detailed Bluetooth case study illustrates the value of the techniques and as a by-product the paper corrects some erroneous results of others for Bluetooth version 2's Enhanced Data Rate.

关键词： Delay-aware FEC interleaving video streaming

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HyCast-Podcast Discovery in Mobile Networks

HyCast-Podcast Discovery in Mobile Networks

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3rd acm workshop on wireless multimedia networking and performance modeling

作者： Andronache, Adrian Brust, Matthias R. Rothkugel, Steffen Univ Luxembourg L-1359 Luxembourg Luxembourg

ISBN: (纸本)9781595938046

Podcasts are a popular way to provide multimedia information about certain topics. A multitude of podcast servers exist in the Internet, allowing people to subscribe to them. Typically, podcasts are downloaded onto desktop computers and copied on mobile devices to be played while being on the move. In this paper, we extend the idea of podcasts, making them available in mobile network environments. In particular, HyCast does not rely on central podcast directories. Instead, HyCast also allows discovering, subscribing to, and downloading podcasts and episodes in the local neighborhood. For the dissemination of podcast information, we introduce and evaluate two different strategies. One is based on peer-to-peer communication between one-hop neighbors. The second one employs clustering to reduce the overhead of the podcast information dissemination.

关键词： multimedia podcast mobile clustering peer-to-peer content distribution

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WMuNeP'07: Proceedings of the Third acm workshop on wireless multimedia networking and performance modeling

WMuNeP'07: Proceedings of the Third ACM Workshop on Wireless...

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WMuNeP'07: 3rd acm workshop on wireless multimedia networking and performance modeling

ISBN: (纸本)9781595938046

The proceedings contain 16 papers. The topics discussed include: a framework for QoS-aware multimedia service selection for wireless clients;a framework for the implementation of adaptive streaming systems;ZIPPER: a zero-infrastructure peer-to-peer system for VANET;a smooth playback technique for progressively encoded multimedia streams over the Internet with wireless connections;delay-aware interleaving and forward-error correction for video over wireless: a bluetooth case study;a new decentralized mobility management service architecture for IPV6-based networks;power saving techniques in MBMS multicast mode;performance evaluation for integrated high altitude platforms-terrestrial general packet radio service system;and degradation of speech recognition performance over lossy data networks.

关键词： wireless networks

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Proceedings of the 3rd acm SOSP workshop on networking, Systems, and Applications on Mobile Handhelds, MobiHeld'11

Proceedings of the 3rd ACM SOSP Workshop on Networking, Syst...

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3rd acm SOSP workshop on networking, Systems, and Applications on Mobile Handhelds, MobiHeld'11

ISBN: (纸本)9781450309806

The proceedings contain 11 papers. The topics discussed include: Jupiter: transparent augmentation of Smartphone capabilities through cloud computing;avoiding nostril-cam and postage-stamp people in mobile video conferences;examining storage performance on mobile devices;the modeling and comparison of wireless network denial of service attacks;searchlight: helping mobile devices find their neighbors;predicting handoffs in 3G networks;designing real-time multimedia applications on mobile devices;MARS: adaptive remote execution for multi-threaded mobile devices;the Swiss army Smartphone: cloud-based delivery of USB services;and context-aware apps with the Zonezz platform.

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Enhancing the performance of IEEE 802.11 WLAN using Multi Rate Backoff Algorithm

Enhancing the performance of IEEE 802.11 WLAN using Multi Ra...

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WMuNeP'07: 3rd acm workshop on wireless multimedia networking and performance modeling

作者： Abdul Gafur, M. Sebastian, M.P. Department of Computer Science Engineering National Institute of Technology Calicut NIT Campus P O Calicut - 673 601 India

ISBN: (纸本)9781595938046

In the IEEE 802.11 wireless Local Area Networks (WLANs), after each collision on the shared channel, network nodes sending collided packets need to backoff for a random period of time, which is uniformly selected from the Contention Window (CW). This contention window is dynamically controlled by the Binary Exponential Backoff (BEB) algorithm. The BEB scheme suffers from fairness problem, frequent packet collisions and low throughput under high traffic load. In this thesis, we propose a new backoff algorithm, termed the Multi Rate Backoff Algorithm (MRB), for use with the IEEE 802.11 Distributed Coordination Function. In the MRB scheme, nodes with collision (or nodes with success) increase (or decrease) their contention windows in different rates depending on the current size of the CW. The MRB scheme outperforms the BEB scheme employed in the IEEE 802.11 MAC standard and the Multiplicative Increase Linear Decrease (MILD) scheme, Multiplicative Increase and Multiplicative Decrease (MIMD) scheme over a wide range of network size. Copyright 2007 acm.

关键词： wireless local area networks (WLAN)

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Proceedings of the third acm international workshop on wireless mobile multimedia 2000

Proceedings of the third ACM international workshop on wirel...

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Proceedings of the 3rd acm International workshop on wireless Mobile multimedia (WOWMOM 2000)

ISBN: (纸本)1581133030

The proceeding contains 12 papers from the Proceedings of The Third acm International workshop on wireless Mobile multimedia 2000. The topics discussed include: a wireless fair scheduling algorithm for error-prone wireless channels;real-time prioritized call admission control in a base station scheduler;mobility modeling of rush hour traffic for location design area in cellular networks;multicast support for mobile IP with the hierarchical local registration approach and delay jitter performance of video traffic in a cellular wireless ATM networks.

关键词： Mobile telecommunication systems

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Peer-to-peer multimedia content provisioning for Vehicular Ad Hoc Networks

Peer-to-peer multimedia content provisioning for Vehicular A...

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WMuNeP'07: 3rd acm workshop on wireless multimedia networking and performance modeling

作者： Olariu, Stephan Department of Computer Science Old Dominion University Norfolk VA United States

ISBN: (纸本)9781595938046

In the past decade, Vehicular Ad Hoc Networks (VANET), that specialize Mobile Ad Hoc Networks (MANET), to vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communications have received a great deal of attention in the research community. And with a good reason: vehicular communications promise to integrate driving into a ubiquitous and pervasive network that is already redefining the way we live and work. The potential societal impact of VANET was confirmed by the proliferation of consortia and initiatives involving car manufacturers, government agencies and academia including, among others, the Car-2-Car Communication Consortium, the Vehicle Safety Consortium, the Networks-on-Wheels Project, the Vehicle Infrastructure Integration Program, and the Advanced Safety Vehicle Program. While the original impetus for VANET was traffic safety, more recent concerns involve privacy and security. It was recently noticed that allocation of 75MHz spectrum in the 5.9GHz band for Dedicate Short Range Communications (DSRC) in North America opens VANET to multimedia applications including peer-to-peer (P2P) content provisioning and the fast-growing mobile infotainment industry. In spite of their close resemblance to MANET, with which they share the same underlying philosophy, VANET networks have a number of specific characteristics that set them apart from MANET. The presentation will discuss the state of the art in VANETs as well as a zero-infrastructure for multimedia over peer to peer for VANET.

关键词： Ad hoc networks

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