2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies最新文献_第3页

A Heuristic Buffer Management Scheme on Android to Enhance Video Quality on Digital Handheld Devices 一种基于Android的启发式缓冲区管理方案以提高数字手持设备上的视频质量

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.25

Keyurkumar J. Patel, S. Anand, S. Kumar

{"title":"A Heuristic Buffer Management Scheme on Android to Enhance Video Quality on Digital Handheld Devices","authors":"Keyurkumar J. Patel, S. Anand, S. Kumar","doi":"10.1109/NGMAST.2010.25","DOIUrl":"https://doi.org/10.1109/NGMAST.2010.25","url":null,"abstract":"Most research efforts have concentrated on advancement in video compression techniques resulting in DivX/Xvid codecs for better performance on handheld devices. Initial investigations reveal that these techniques are actually taking less time compared to entire execution time in a typical media playback system. However, it enlists that the buffer management methods employed in multimedia framework can significantly impact the overall end-to-end performance on these resource constrained devices. Motivated by these observations, we present a heuristic buffer management scheme to improve end-to-end performance for Android based devices. The outline of the paper is as follows: Firstly, we discuss few related works to investigate existing buffer management methods used within Packet Video Multimedia framework (PVMF) of Android. Secondly, we describe how buffering schemes used between processors in hardware platform can further contribute to the performance bottleneck. Consequently, a heuristic buffer management scheme is proposed to ensure uniform buffer allocation among PVMF components and between processor-coprocessor of the hardware platform. We point out the need for such a mechanism to synchronize media processing and media controlling elements to alleviate video quality in a constant time factor. To validate our approach, an experiment was performed using the said buffer management technique to playback Xvid content on Zoom2 hardware platform based on Android. We summarize the performance characteristics for the trial experiments conducted. Experimental results lead us to conclude the technique is effective at improving overall system performance significantly. We extend to benchmark the performance achieved to further characterize this method. Finally, we also evaluate the tradeoff between memory and performance using our method with combinations of measurements using our experimental setup.","PeriodicalId":184193,"journal":{"name":"2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123626953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Hierarchical Semantic Overlay System for Semantic Search and Service Matchmaking 面向语义搜索和服务匹配的分层语义覆盖系统

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.20

J. Strassner

引用次数: 1

Media Share - An IPTV Service Development, Deployment and Delivery Platform 媒体共享——IPTV业务开发、部署和交付平台

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.18

Priyanka Angotra, A. Kuwadekar, K. Al-Begain

引用次数: 0

On Performance Anomaly in 802.11 Wireless LANs: Problem and Solution Approaches 802.11无线局域网性能异常:问题与解决方法

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.51

Murad A. Abusubaih

引用次数: 4

An Intelligent Scheme for First Run Cognitive Radios 首跑认知无线电的智能方案

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.40

A. Al-Dulaimi, L. Al-Saeed

{"title":"An Intelligent Scheme for First Run Cognitive Radios","authors":"A. Al-Dulaimi, L. Al-Saeed","doi":"10.1109/NGMAST.2010.40","DOIUrl":"https://doi.org/10.1109/NGMAST.2010.40","url":null,"abstract":"Cognitive Radio (CR) can access the spectrum temporarily to solve the problem of the near spectrum crunch. The previous transmissions’ events are one of the main motivations for the CR actions and its learning procedures. Therefore, self aware CR devices may cause a considerable interference when they transmit for the first time with no practical knowledge. This paper proposes a solution for cognitive radios with no experiences for instance first run cognitive radios and CR devices repositioned in new wireless environments. A multi-layered learning system is designed using the neural networks to extract cognition from other operator secondary users. Thus, sensors data, other CR devices’ data, spectrum governing entities behaviour, in addition to any stored data in the CR are processed for decision comparisons. Final evaluations are based on the weight and significance given to each of these inputs. As a result, full autonomous mature cognitive users are created through understanding other cognitive radios experiments. Simulation was trained to assess the proposed learning model. Results show promising and efficient utilization using gradual learning rate algorithms with the designed system.","PeriodicalId":184193,"journal":{"name":"2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117033200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

A Novel Scalable Architecture for Efficient QoS to Cater IMS Services for Handheld Devices Based on Android 基于Android手持设备的高效QoS可扩展架构

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.31

Keyurkumar J. Patel, S. Anand, S. Kumar

{"title":"A Novel Scalable Architecture for Efficient QoS to Cater IMS Services for Handheld Devices Based on Android","authors":"Keyurkumar J. Patel, S. Anand, S. Kumar","doi":"10.1109/NGMAST.2010.31","DOIUrl":"https://doi.org/10.1109/NGMAST.2010.31","url":null,"abstract":"IP Multimedia Subsystem (IMS) known for its prominent service delivery is paving way for applications like Video Voice over IP (VVOIP) on handheld devices too. Android, a software platform from Google, pioneering in middleware and applications domain of handheld devices does not offer support for IMS services by design. Motivated by these observations, we present novel scalable architecture to cater IMS based services on Android. First, we discuss few related works to investigate and analyze the IMS and the role of SIP in IMS services. Second, we discuss few characteristics of android architecture and detail constraints associated with middleware sub-system to cater IMS services. Consequently, we describe the proposed architecture addressing inherent challenges like QoS, Extendibility and Security encountered while offering IMS based services. The architectural framework design reduces time-to-deployment by using a layered approach encompassing three layers, namely: QoE Engine, Advanced IMS Service Core (A-IMS) and Application Services Engine (ASE). The A-IMS core is responsible to provide End-2-End efficient service delivery of IMS services like VOIP. We point out the benefits of using the ASE and generic media management and control interface (GMMCI) to ensure smooth and swift portability onto different flavors of android. Finally, we conclude by detailing some cases of future IMS services like Video Sharing/Video Recording in an on-going Video Telephony Call.","PeriodicalId":184193,"journal":{"name":"2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127377369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Scalable Video Transmission with Appropriate Path Selection and Raptor Network Coding 具有适当路径选择和Raptor网络编码的可扩展视频传输

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.39

Abdul Razzaq, A. Mehaoua

{"title":"Scalable Video Transmission with Appropriate Path Selection and Raptor Network Coding","authors":"Abdul Razzaq, A. Mehaoua","doi":"10.1109/NGMAST.2010.39","DOIUrl":"https://doi.org/10.1109/NGMAST.2010.39","url":null,"abstract":"Providing reliable and high quality video over wireless networks is extremely challenging task due to unstable wireless nature. Scalable Video Coding (SVC) is very vulnerable to channel disturbance when transmitted over error-prone wireless channels. Conventional Forward Error Correcting (FEC) codes and retransmission solutions will become less effective while streaming SVC over wireless networks for the reason that video frame errors appear in bursts rather than random and the bad channel condition usually persists for a period of time. In this paper we investigate the problem of streaming video on lossy packet networks such as Wireless Mesh Network (WMN) with path and symbol diversity. We propose a scheme with Unequal Error Protection (UEP) based on Appropriate Path Selection (APS) and Network Coding (NC). The scheme tries to select appropriate path based on Grey Relational Analysis (GRA) for different SVC layers. It chooses the best path for most important layer, base layer, and less stable paths for enhancement layers. We also implement network re-encoding algorithm based on Raptor codes in the forwarding peers in order to increase the perceived video quality at receiving end.","PeriodicalId":184193,"journal":{"name":"2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131836404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

An Efficient Handover Technique for 4G Networks 一种高效的4G网络切换技术

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.26

M. Alzubi, A. Amr, M. Anan

引用次数: 2

The Geobashing Architecture for Location-Based Mobile Massive Multiplayer Online Games 基于位置的移动大型多人在线游戏的Geobashing架构

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.15

Bernhard Dieber, Thomas Grassauer, Jakob Mayring, B. Rinner

引用次数: 0

A Comparative Study between 802.11p and Mobile WiMAX-based V2I Communication Networks 802.11p与基于移动wimax的V2I通信网络的比较研究

2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2010-07-27 DOI: 10.1109/NGMAST.2010.45

Ikbal Chammakhi Msadaa, Pasquale Cataldi, F. Filali

{"title":"A Comparative Study between 802.11p and Mobile WiMAX-based V2I Communication Networks","authors":"Ikbal Chammakhi Msadaa, Pasquale Cataldi, F. Filali","doi":"10.1109/NGMAST.2010.45","DOIUrl":"https://doi.org/10.1109/NGMAST.2010.45","url":null,"abstract":"Intelligent Transportation Systems (ITS) have been under development since the 80’s as part of a global strategy for solving many of our modern life transportation problems. These systems enable people to reach their destinations in a safe, efficient, and comfortable way. In order to reach that goal, several radio access technologies (RAT) such as UMTS, WiFi, WiMAX and 5.9 GHz have been proposed for next generation ITS. Yet, the coexistence of these technologies in the vehicles raises the challenge of choosing the most appropriate RAT. In order to address this problem and define optimal rules for the communication technology selection, comparisons on the network performance have to be done. In this paper, we compare two of the most promising infrastructure-based wireless technologies: mobile WiMAX (based on IEEE 802.16e standard) and the 5.9 GHz technology based on the upcoming IEEE 802.11p standard. We investigate, through simulation, the potential and limitations of both technologies as a communication media for vehicle-to-infrastructure (V2I) communications. The performance of the two systems is evaluated for different vehicle speeds, traffic data rates, and network deployments.","PeriodicalId":184193,"journal":{"name":"2010 Fourth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121758400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 76