2012 IEEE 20th International Workshop on Quality of Service最新文献_第4页

Audio-on-demand over wireless sensor networks 无线传感器网络音频点播

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245981

Hanhua Chen, Hai Jin, Lingchao Guo, S. Wu, Tao Gu

{"title":"Audio-on-demand over wireless sensor networks","authors":"Hanhua Chen, Hai Jin, Lingchao Guo, S. Wu, Tao Gu","doi":"10.1109/IWQoS.2012.6245981","DOIUrl":"https://doi.org/10.1109/IWQoS.2012.6245981","url":null,"abstract":"Audio represents one of the most appealing yet least exploited modalities in wireless sensor networks, due to the potentially extremely large data volumes and limited wireless capacity. Therefore, how to effectively collect audio sensing information remains a challenging problem. In this paper, we propose a new paradigm of audio information collection based on the concept of audio-on-demand. We consider a sink-free environment targeting for disaster management, where audio chunks are stored inside the network for retrieval. The difficulty is to guarantee a high search success rate without infrastructure support. To solve the problem, we design a novel replication algorithm that deploys an optimal number of O(√n) replicas across the sensor network. We prove the optimality of the energy consumption of the algorithm, and use real testbed experiments and extensive simulations to evaluate the performance and efficiency of our design. The experimental results show that our design can provide satisfactory quality of audio-on-demand service with short startup latency and slight playback jitter. Extensive simulation results show that this design achieves a search success rate of 98% while reducing the search energy consumption by an order of magnitude compared with existing schemes.","PeriodicalId":178333,"journal":{"name":"2012 IEEE 20th International Workshop on Quality of Service","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133012063","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: 3

Pricing, competition and innovation: A profitable business model to resolve the tussle involved in peer-to-peer streaming applications 定价、竞争和创新:解决点对点流媒体应用中涉及的纠纷的盈利商业模式

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-04 DOI: 10.1109/IWQoS.2012.6245997

Libin Yang, W. Lou

{"title":"Pricing, competition and innovation: A profitable business model to resolve the tussle involved in peer-to-peer streaming applications","authors":"Libin Yang, W. Lou","doi":"10.1109/IWQoS.2012.6245997","DOIUrl":"https://doi.org/10.1109/IWQoS.2012.6245997","url":null,"abstract":"Peer-to-peer (P2P) streaming applications have led to the disharmony among the involved parties: Content Service Providers (CSPs), Internet Service Providers (ISPs) and P2P streaming End-Users (EUs). This disharmony is not only a technical problem at the network aspect, but also an economic problem at the business aspect. To handle this tussle, this paper proposes a profitable business model to enable all involved parties to enlarge their benefits with the help of a novel QoS-based architecture integrated with caching techniques. We model the interactions, including competition and innovation, among CSPs, ISPs and EUs as a tripartite game by introducing a pricing scheme, which captures both network and business aspects of the P2P streaming applications. We study the tripartite game in different market scenarios as more and more ISPs and CSPs involve into the market. A three-stage Stackelberg game combining with Cournot game is proposed to study the interdependent, interactive and competitive relationship among CSPs, ISPs and EUs. Moreover, we investigate how the market competition motivates ISPs to upgrade the cache service infrastructure. Our theoretical analysis and empirical study both show that the tripartite game can result in a win-win-win outcome. The market competition plays an important role in curbing the pricing power of CSPs and ISPs, and this effect is more remarkable when the amounts of CSPs and ISPs become infinite. Interestingly, we find that in the tripartite game there exists a longstop at which ISPs may have no incentive to upgrade the cache service infrastructure. However, increasing the market competition level can propel the innovation of ISPs.","PeriodicalId":178333,"journal":{"name":"2012 IEEE 20th International Workshop on Quality of Service","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128769040","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

NCShield: Securing decentralized, matrix factorization-based network coordinate systems NCShield:保护分散的、基于矩阵分解的网络坐标系统

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-01 DOI: 10.1109/iwqos.2012.6245983

Shining Wu, Yang Chen, Xiaoming Fu, Jun Li

引用次数: 4

Geo-fencing: Geographical-fencing based energy-aware proactive framework for mobile devices 地理围栏:基于地理围栏的移动设备能源感知主动框架

2012 IEEE 20th International Workshop on Quality of Service Pub Date : 2012-06-01 DOI: 10.1109/IWQoS.2012.6245993

Jihoon Ryoo, Hwangnam Kim, Samir R Das

{"title":"Geo-fencing: Geographical-fencing based energy-aware proactive framework for mobile devices","authors":"Jihoon Ryoo, Hwangnam Kim, Samir R Das","doi":"10.1109/IWQoS.2012.6245993","DOIUrl":"https://doi.org/10.1109/IWQoS.2012.6245993","url":null,"abstract":"Location-based services (LBSs) are often based on an area or place as opposed to an accurate determination of the precise location. However, current mobile software frameworks are geared towards using specific hardware devices (e.g., GPS or 3G or WiFi interfaces) for as precise localization as possible using that device, often at the cost of a significant energy drain. Further, often the location information is not returned promptly enough. To address this problem, we design a framework for mobile devices, called Geo-fencing. The proposed framework is based on the observation that users move from one place to another and then stay at that place for a while. These places can be, for example, airports, shopping centers, home, offices and so on. Geo-fencing defines such places as geographic areas bounded by polygons. It assumes people simply move from fence to fence and stay inside fences for a while. The framework is coordinated with available communication chips and sensors based on their energy usage and accuracy provided. The essential goal is to determine when users check in or out of fences in an energy effiecient fashion so that appropriate LBS can be triggered. Windows based smartphones are used to prototype Geo-fencing. Validations are conducted with the resulting traces of outdoor and indoor activities of several users for several months. The results show that Geo-fencing provides an effective framework for use with LBSs with a significant energy saving for mobile devices.","PeriodicalId":178333,"journal":{"name":"2012 IEEE 20th International Workshop on Quality of Service","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123779797","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: 26