2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies最新文献

Predictive Routing in Mobile Ad-Hoc Networks 移动Ad-Hoc网络中的预测路由

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.30

J. Hemmes, Matthew Fisher, K. Hopkinson

引用次数: 9

A Hybrid Network Protocol for Disaster Scenarios 灾难场景下的混合网络协议

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.32

Abdussalam Baryun, K. Al-Begain, D. Villa

引用次数: 5

Real Time Available-Bandwidth Estimation (ABE) Algorithm Based Selection in Heterogeneous Network for WiMAX and 3G 基于实时可用带宽估计(ABE)算法的WiMAX和3G异构网络选择

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.38

Kiran Ahuja, R. Khanna, Brahmjit Singh

引用次数: 10

Priority Scheduling for Improving Video Delivery over Wireless Multimedia Sensor Networks 改进无线多媒体传感器网络视频传输的优先级调度

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.29

E. Karimi, B. Akbari

{"title":"Priority Scheduling for Improving Video Delivery over Wireless Multimedia Sensor Networks","authors":"E. Karimi, B. Akbari","doi":"10.1109/NGMAST.2011.29","DOIUrl":"https://doi.org/10.1109/NGMAST.2011.29","url":null,"abstract":"Using multipath routing protocols results in more efficient data transmission than single path routing protocols in Wireless Multimedia Sensor Networks (WMSNs). In this paper, we propose a new mechanism for improving video transmission over WMSN based on packet, path and queue priority scheduling over multipath routing protocol. We assume that network has high CBR (Constant Bit Rate) traffic with no video data in addition to video packets. Since, not every frame has the same effect on receptive video quality, in our mechanism we put priority over the video packets regarding their effects on the receiver video distortions. In our scheduling, condition of each routing path is studied, using control packets being transmitted periodically, and in the video source node the packets having high priority are transmitted over paths with better conditions. Also, intermediate nodes buffer (queue) is scheduled for quick and righteously transmission of video packets compared with the other packets in network. Simulation results show that our proposed scheduling improves important Quality-of-Service (QoS) metrics such as end-to-end delay and frame loss percentage for video streaming.","PeriodicalId":142071,"journal":{"name":"2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"32 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124597116","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

Contribution of Broadcast Algorithms to Reactive Ad Hoc Routing 广播算法对响应式Ad Hoc路由的贡献

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.28

João Matos, Hugo M. Miranda

引用次数: 1

Energy Efficiency of Recharging a Mobile Device 移动设备充电的能源效率

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.39

J. Ruutu, J. Nurminen, Kari Rissanen

引用次数: 3

Modelling Speech Quality for NB and WB SILK Codec for VoIP Applications 用于VoIP应用的NB和WB SILK编解码器的语音质量建模

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.18

M. Goudarzi, Lingfen Sun, E. Ifeachor

{"title":"Modelling Speech Quality for NB and WB SILK Codec for VoIP Applications","authors":"M. Goudarzi, Lingfen Sun, E. Ifeachor","doi":"10.1109/NGMAST.2011.18","DOIUrl":"https://doi.org/10.1109/NGMAST.2011.18","url":null,"abstract":"In the last decade, VoIP telephony has gained a tremendous popularity. Skype is one of the most successful and popular VoIP services which has inspired a new generation of VoIP and multimedia users. SILK speech codec is the latest development by Skype and has been integrated into the current version of Skype and is expected to be incorporated into new and emerging mobile devices such as iphone and soft phones. One of the major challenges in every VoIP service is to find an easily accessible objective quality model to predict/measure the perceived speech quality or the degree of user satisfaction. In this paper, we present a regression-based model to quantify the speech quality of the wideband (WB) and narrowband (NB) SILK codec for VoIP applications. The developed model uses the network level parameter (i.e., packet loss) and the application level parameter (i.e., send bit rate) to predict the perceived voice quality in terms of the Mean Opinion Score (MOS). Subjective tests were also carried out to validate the model and good accuracy was achieved (97% for wideband and 91% for narrowband). The developed model can be easily implemented in soft phones or mobile devices to predict voice quality for SILK codec in VoIP applications and can also be used for real-time adaptation and control of VoIP applications to further explore the adaptive feature of the SILK codec in future mobile devices or softphones.","PeriodicalId":142071,"journal":{"name":"2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133651693","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: 14

A Cloud Based Service Architecture for Personalized Media Recommendations 基于云的个性化媒体推荐服务架构

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.14

K. Gopalan, Senthil Nathan, H. BhanuTejaC., Ashok Babu Channa, Prateek Saraf, Guru Shanker

引用次数: 7

Resource Footprint of a Manycast Protocol Implementation on Multiple Mobile Platforms 多移动平台上多播协议实现的资源占用

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.36

Ekhiotz Jon Vergara, S. Nadjm-Tehrani, Mikael Asplund, Urko Zurutuza

引用次数: 15

A Unified Scalable Model of User Localisation with Uncertainty Awareness for Large-scale Pervasive Environments 大规模普适环境下具有不确定性感知的用户定位统一可扩展模型

2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies Pub Date : 2011-09-14 DOI: 10.1109/NGMAST.2011.49

P. Aksenov, K. Luyten, K. Coninx

{"title":"A Unified Scalable Model of User Localisation with Uncertainty Awareness for Large-scale Pervasive Environments","authors":"P. Aksenov, K. Luyten, K. Coninx","doi":"10.1109/NGMAST.2011.49","DOIUrl":"https://doi.org/10.1109/NGMAST.2011.49","url":null,"abstract":"Localisation has become a standard feature in many mobile applications. Numerous techniques for both indoor and outdoor location tracking are available today, providing a diversity of ways positioning information can be delivered to a mobile application (e.g., a location-based service). Such factors as the variation of precision over time and covered areas or the difference in quality and reliability make the adoption of several techniques for one application cumbersome. This work presents an approach that models the capabilities of localisation systems and then uses this model to build a unified view on localisation, with special attention paid to uncertainty coming from different localisation conditions and its presentation to the user. We discuss technical considerations, challenges and issues of the approach and report about a user study on users' acceptance of the suggested behaviour of an application based on the approach. The results of the study showed the feasibility of the approach and revealed users' preference towards automatic but yet informed changes they experienced while using the application.","PeriodicalId":142071,"journal":{"name":"2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134376017","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: 5