{"title":"Cooperative Localization with Pre-Knowledge Using Bayesian Network for Wireless Sensor Networks","authors":"Shih-Hsiang Lo, Chun-Hsien Wu, Yeh-Ching Chung","doi":"10.1109/ICPPW.2007.31","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.31","url":null,"abstract":"Obtaining location information by localization schemes for sensor nodes makes applications of wireless sensor networks (WSNs) more meaningful. Most of localization schemes only use the information gathered during the execution of the localization scheme. In this paper, we proposed a location model based on Bayesian Network [18] with proximity measurement, the deployment information, and the deployment knowledge to describe the relations of the locations of sensor nodes deployed in a grid topology with the probabilistic graphical model. Based on the location model, we present a cooperative localization algorithm, the CLPKBN scheme, to do the localization for a WSN. To evaluate the proposed scheme, we implement the CLPKBN scheme and the Probability Grid scheme on a simulator. The experimental results show that the CLPKBN scheme outperforms the Probability Grid scheme in most of test cases.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"80 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113977632","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}
Hiroaki Murata, T. Wada, T. Maekawa, K. Mutsuura, H. Okada
{"title":"QoS Guaranteed Multi-Poll Access Scheme with Transmission Control over High Throughput Wireless LANs","authors":"Hiroaki Murata, T. Wada, T. Maekawa, K. Mutsuura, H. Okada","doi":"10.1109/ICPPW.2007.70","DOIUrl":"https://doi.org/10.1109/ICPPW.2007.70","url":null,"abstract":"Recently, we need high bit rate transmissions of the wireless LAN to access the internet at offices and houses. Multi-Poll access scheme has been proposed as an efficient access control scheme for these necessities. The scheme is a central control scheme using Polling system. In order to establish a high speed multimedia transmission, we need to integrate the required quality of services effectively. In this paper, we propose QoS (Quality of Service) guaranteed Multi-Poll access scheme for multimedia services in wireless LAN. We evaluate the transmission performances of the proposed scheme for effectiveness by computer simulations. We have clarified that the proposed scheme has the outstanding performances on the throughput, delay time, and frame drop rate comparing to the conventional scheme.","PeriodicalId":367703,"journal":{"name":"2007 International Conference on Parallel Processing Workshops (ICPPW 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131052126","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}