计算机科学与技术（参考文献）Efficient Localization based on Imprecise Anchors in RFID System

Efficient Localization based on Imprecise Anchors in RFID System Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology Nanjing University,China Presenter:Dr.Lei Xie,Associate Professor

Efficient Localization based on Imprecise Anchors in RFID System Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology Nanjing University, China Presenter: Dr. Lei Xie, Associate Professor

Efficient Localization based on Imprecise Anchors in RFID System Outline Background Motivation ·Experimental Study Solutions Performance Evaluation Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Outline • Background & Motivation • Experimental Study • Solutions • Performance Evaluation Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System

Efficient Localization based on Imprecise Anchors in RFID System Scenario NATIONAL 8ETIE国 GEOGRAPHIC Context-aware. location-based Service Super Markets Libraries Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Scenario Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System Super Markets Libraries Context-aware, location-based Service

Efficient Localization based on Imprecise Anchors in RFID System Scenario Location is the most important factor Super Markets Libraries Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Scenario Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System Super Markets Libraries Location is the most important factor

Efficient Localization based on Imprecise Anchors in RFID System Scenario Conventional localization mainly leverage precise anchor nodes to help compute the user's location. Anchor nodes are intentionally deployed for localization. Y-avis OReference Tag LANDMARC Target Tag Winels Notrks 2004.Ni et al Challenges: Difficult to find or deploy enough anchor nodes for accurate localization. The k-nearest neighbor in RSSI (k=4) X-avis Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Scenario Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System Conventional localization mainly leverage precise anchor nodes to help compute the user’s location. LANDMARC Wireless Networks 2004, Ni et al VIRE ICPP 2007, Zhao et al Challenges: Difficult to find or deploy enough anchor nodes for accurate localization. Anchor nodes are intentionally deployed for localization

Efficient Localization based on Imprecise Anchors in RFID System Scenario 选口 口 RFID New Opportunities: The same type of items are usually placed in a specified range. The location of these items can be approximately known according to the layout of the merchandize okhsw. 好商网 wwwww.ok51iorom Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Scenario Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System RFID Tag New Opportunities: • The same type of items are usually placed in a specified range. • The location of these items can be approximately known according to the layout of the merchandize

Efficient Localization based on Imprecise Anchors in RFID System Scenario 选口 RF a ce®O e⑦ 10 tags 8 tags Z28 Locate the mobile RFID reader carried by user. OKhsw...m 好商网 wwwww.ok51iorom Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Scenario Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System RFID Tag 10 tags 8 tags Locate the mobile RFID reader carried by user

Efficient Localization based on Imprecise Anchors in RFID System Motivation The widely deployed RFID tags are natural anchor nodes with imprecise locations. It is possibl to the categ We propose solutions to locate the mobile the layout d user based on imprecise anchor nodes in RFID systems. When multiple categories of tags are scanned,the reader's location can be computed more accurately,by sufficiently leveraging the layout information of these categories. Historical Liberal Science Fiction Biographical Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System • The widely deployed RFID tags are natural anchor nodes with imprecise locations. • It is possible to locate the user according to the categories of the scanned tags and the layout of the merchandize. • When multiple categories of tags are scanned, the reader’s location can be computed more accurately, by sufficiently leveraging the layout information of these categories. Motivation We propose solutions to locate the mobile user based on imprecise anchor nodes in RFID systems

Efficient Localization based on Imprecise Anchors in RFID System Motivation Challenges The anchor positions are imprecise. Items of the same category can be placed in a range rather than on a precise point on the shelf. The reader may miss some of the nearby RFID tags due to imperfect radio environments. Time efficiency is required. RFID readers takes more time to scan nearby RFID tags when the density of RFID is increased. Return useful information in a timely manner even if the reader is surrounded by thousands of RFID tags. Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Motivation Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System  Challenges  The anchor positions are imprecise.  Items of the same category can be placed in a range rather than on a precise point on the shelf.  The reader may miss some of the nearby RFID tags due to imperfect radio environments.  Time efficiency is required.  RFID readers takes more time to scan nearby RFID tags when the density of RFID is increased.  Return useful information in a timely manner even if the reader is surrounded by thousands of RFID tags

Efficient Localization based on Imprecise Anchors in RFID System Problem Formulation K《KKK(ggrg容SCRC《KKo 4(y0) 客官GK(rK(((r(e 《*esrres(K《KKK(cro (rK(rrrrrrrrrrrrrrrrrro KKSKERKSKYYKYKSRRRRRRRR product with a RFID tag shelves aisle antenna target(customer) Color ranges Product categories Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,China

Problem Formulation Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System shelves aisle target (customer) product with a RFID tag antenna Color ranges Product categories