2010 IEEE International Conference on Pervasive Computing and Communications (PerCom)最新文献_第2页

Decomposing power measurements for mobile devices 分解移动设备的功率测量

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466991

A. Rice, Simon Hay

引用次数: 109

An integrated network of roadside sensors and vehicles for driving safety: Concept, design and experiments 用于驾驶安全的路边传感器和车辆的集成网络:概念、设计和实验

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466988

Hua Qin, Zi Li, Yanfei Wang, X. Lu, Wensheng Zhang, Guiling Wang

{"title":"An integrated network of roadside sensors and vehicles for driving safety: Concept, design and experiments","authors":"Hua Qin, Zi Li, Yanfei Wang, X. Lu, Wensheng Zhang, Guiling Wang","doi":"10.1109/PERCOM.2010.5466988","DOIUrl":"https://doi.org/10.1109/PERCOM.2010.5466988","url":null,"abstract":"One major goal of the vehicular ad hoc network (VANET) is to improve driving safety. However, the VANET may not guarantee timely detection of dangerous road conditions or maintain communication connectivity when the network density is low (e.g., in rural highways), which may pose as a big threat to driving safety. Towards addressing the problem, we propose to integrate the VANET with the inexpensive wireless sensor network (WSN). That is, sensor nodes are deployed along the roadside to sense road conditions, and to buffer and deliver information about dangerous conditions to vehicles regardless of the density or connectivity of the VANET. Along with the concept of VANET-WSN integration, new challenges arise and should be addressed. In this paper, we investigate these challenges and propose schemes for effective and efficient vehicle-sensor and sensor-sensor interactions. Prototype of the designed system has been implemented and tested in the field. Extensive simulations have also been conducted to evaluate the designed schemes. The results demonstrate various design tradeoffs, and indicate that satisfactory safety and energy efficiency can be achieved simultaneously when system parameters are appropriately chosen.","PeriodicalId":207774,"journal":{"name":"2010 IEEE International Conference on Pervasive Computing and Communications (PerCom)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130005938","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: 89

Blurring snapshots: Temporal inference of missing and uncertain data 模糊快照:缺失和不确定数据的时间推断

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466995

V. Rajamani, C. Julien

{"title":"Blurring snapshots: Temporal inference of missing and uncertain data","authors":"V. Rajamani, C. Julien","doi":"10.1109/PERCOM.2010.5466995","DOIUrl":"https://doi.org/10.1109/PERCOM.2010.5466995","url":null,"abstract":"Many pervasive computing applications continuously monitor state changes in the environment by acquiring, interpreting and responding to information from sensors embedded in the environment. However, it is extremely difficult and expensive to obtain a continuous, complete, and consistent picture of a continuously evolving operating environment. One standard technique to mitigate this problem is to employ mathematical models that compute missing data from sampled observations thereby approximating a continuous and complete stream of information. However, existing models have traditionally not incorporated a notion of temporal validity, or the quantification of imprecision associated with inferring data values from past or future observations. In this paper, we support continuous monitoring of dynamic pervasive computing phenomena through the use of a series of snapshot queries. We define a decay function and a set of inference approaches to filling in missing and uncertain data in this continuous query.We evaluate the usefulness of this abstraction in its application to complex spatio-temporal pattern queries in pervasive computing networks.","PeriodicalId":207774,"journal":{"name":"2010 IEEE International Conference on Pervasive Computing and Communications (PerCom)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124122228","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

AutoGait: A mobile platform that accurately estimates the distance walked auto步态:一个移动平台，可以准确估计步行距离

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466984

Dae-ki Cho, Min Y. Mun, U. Lee, W. Kaiser, M. Gerla

{"title":"AutoGait: A mobile platform that accurately estimates the distance walked","authors":"Dae-ki Cho, Min Y. Mun, U. Lee, W. Kaiser, M. Gerla","doi":"10.1109/PERCOM.2010.5466984","DOIUrl":"https://doi.org/10.1109/PERCOM.2010.5466984","url":null,"abstract":"AutoGait is a mobile platform that autonomously discovers a user's walking profile and accurately estimates the distance walked. The discovery is made by utilizing the GPS in the user's mobile device when the user is walking outdoors. This profile can then be used both indoors and outdoors to estimate the distance walked. To model the person's walking profile, we take advantage of the fact that a linear relationship exists between step frequency and stride length, which is unique to individuals and applies to everyone regardless of age. Autonomous calibration invisible to users allows the system to maintain a high level of accuracy under changing conditions. AutoGait can be integrated into any pedometer or indoor navigation software on handheld devices as long as they are equipped with GPS. The main contribution of this paper is two fold: (1) we propose an auto-calibration method that trains a person's walking profile by effectively processing noisy GPS readings, and (2) we build a prototype system and validate its performance by performing extensive experiments. Our experimental results confirm that the proposed auto-calibration method can accurately estimate a person's walking profile and thus significantly reduce the error rate.","PeriodicalId":207774,"journal":{"name":"2010 IEEE International Conference on Pervasive Computing and Communications (PerCom)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126616184","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: 65

MediAlly: A provenance-aware remote health monitoring middleware MediAlly:支持来源的远程运行状况监视中间件

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466985

A. Chowdhury, B. Falchuk, Archan Misra

引用次数: 43

Collaborative real-time speaker identification for wearable systems 可穿戴系统的协同实时说话人识别

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466976

M. Rossi, O. Amft, Martin Kusserow, G. Tröster

引用次数: 8

Negotiate power and performance in the reality of RFID systems 协商功率和性能在RFID系统的现实

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466989

Xunteng Xu, Lin Gu, Jianping Wang, G. Xing

{"title":"Negotiate power and performance in the reality of RFID systems","authors":"Xunteng Xu, Lin Gu, Jianping Wang, G. Xing","doi":"10.1109/PERCOM.2010.5466989","DOIUrl":"https://doi.org/10.1109/PERCOM.2010.5466989","url":null,"abstract":"Recent years have witnessed the wide adoption of the RFID technology in many important application domains including logistics, inventory, retailing, public transportation, and security. Though RFID tags (transponders) can be passive, the high power consumption of RFID readers (interrogators) has become a critical issue as handheld and mobile readers are increasingly available in pervasive computing environments. Moreover, high transmission power aggravates interference, complicating the deployment and operation of RFID systems. In this paper, we present an energy-efficient RFID inventory algorithm called Automatic Power Stepping (APS). The design of APS is based on extensive empirical study on passive tags, and takes into consideration several important details such as tag response states and variable slot lengths. APS dynamically estimates the number of tags to be read, incrementally adjusts power level to use sufficient but not excessive power for communication, and consequently reduces both the energy consumption for reading a set of tags and the possibility of collisions. We design APS to be compatible with the current Class-1 Generation-2 RFID standards and hence a reader running APS can interact with existing commercial tags without modification. We have implemented APS both on the NI RFID testing platform and in a high-fidelity simulator. The evaluation shows that APS can save more than 60% energy used by RFID readers.","PeriodicalId":207774,"journal":{"name":"2010 IEEE International Conference on Pervasive Computing and Communications (PerCom)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114878135","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: 30

Capture, recognition, and visualization of human semantic interactions in meetings 会议中人类语义交互的捕获、识别和可视化

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466987

Zhiwen Yu, Zhiyong Yu, H. Aoyama, Motoyuki Ozeki, Yuichi Nakamura

引用次数: 42

Opportunistic web access via WLAN hotspots 通过WLAN热点机会访问网络

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466997

M. Pitkänen, Teemu Kärkkäinen, J. Ott

引用次数: 40

Pervasive computing: What next? 普适计算:下一步是什么?

2010 IEEE International Conference on Pervasive Computing and Communications (PerCom) Pub Date : 2010-05-20 DOI: 10.1109/PERCOM.2010.5466980

D. Tavangarian

引用次数: 1