Detecting and tracking boundaries of a physical process by a large-scale sensor networks are often desirable or even required in various applications. The first step in the detection and tracking procedures is edge detection. Most of the edge detection schemes proposed for sensor networks require information on sensor locations. Also, quantitative measures by which performance of an edge detector for sensor networks can be analyzed have not been available. In this paper, edge detectors which do not require the absolute or relative location of each sensor node are proposed along with a set of metrics used for performance analysis. Detailed performance analysis results obtained through simulation, varying parameters such as sensor density, communication range, and noise level, are provided.
{"title":"Edge Detection Using Orientation-Independent Operators in Large-Scale Sensor Networks","authors":"Kyungryong Seo, Soo-Young Lee","doi":"10.1109/FGCN.2007.110","DOIUrl":"https://doi.org/10.1109/FGCN.2007.110","url":null,"abstract":"Detecting and tracking boundaries of a physical process by a large-scale sensor networks are often desirable or even required in various applications. The first step in the detection and tracking procedures is edge detection. Most of the edge detection schemes proposed for sensor networks require information on sensor locations. Also, quantitative measures by which performance of an edge detector for sensor networks can be analyzed have not been available. In this paper, edge detectors which do not require the absolute or relative location of each sensor node are proposed along with a set of metrics used for performance analysis. Detailed performance analysis results obtained through simulation, varying parameters such as sensor density, communication range, and noise level, are provided.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130412364","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}
Today, electronic message is being used in everyday life. We are facing spam problems. Spam message is widely used for marketing e-Commerce. To block these spam messages, we use filtering or pricing systems. But these solutions raise other problems such as impediment in reception or availability caused by false positive or payment resistance. To solve these problems, we propose a grant model for filter of message detour in e- Business system which controls an unsolicited electronic message and prevents useful electronic message from being discarded. We designed and implemented the grant model for filter of message detour in e-Business system to enhance the usefulness and availability of electronic message. Tests of grant model for filter of message detour in e-Business system proved very successful in it's usability and efficiency.
{"title":"Grant Model for Message Detour in Electronic Business System","authors":"Young-Soo Kim, Seok-Soo Kim","doi":"10.1109/FGCN.2007.141","DOIUrl":"https://doi.org/10.1109/FGCN.2007.141","url":null,"abstract":"Today, electronic message is being used in everyday life. We are facing spam problems. Spam message is widely used for marketing e-Commerce. To block these spam messages, we use filtering or pricing systems. But these solutions raise other problems such as impediment in reception or availability caused by false positive or payment resistance. To solve these problems, we propose a grant model for filter of message detour in e- Business system which controls an unsolicited electronic message and prevents useful electronic message from being discarded. We designed and implemented the grant model for filter of message detour in e-Business system to enhance the usefulness and availability of electronic message. Tests of grant model for filter of message detour in e-Business system proved very successful in it's usability and efficiency.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116907433","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}
In this paper, we propose a new adaptive HARQ scheme based on LDPC codes by observing the reliability and the relations between reliability and BLER with different code rate. The results of the simulations show that this scheme can achieve higher throughput and lower time delay, and that it doesn't increase the complexity of the system.
{"title":"An Adaptive Packet Repeat Proposal RB_IR_HARQ Scheme based on LDPC code","authors":"Ning He, H. Wen, Shuya Yang, Liang Zhou","doi":"10.1109/FGCN.2007.54","DOIUrl":"https://doi.org/10.1109/FGCN.2007.54","url":null,"abstract":"In this paper, we propose a new adaptive HARQ scheme based on LDPC codes by observing the reliability and the relations between reliability and BLER with different code rate. The results of the simulations show that this scheme can achieve higher throughput and lower time delay, and that it doesn't increase the complexity of the system.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131088066","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}
In the next generation of wireless networks, mobile users should move across various access technologies, using multi-interface terminals and different types of services. The most important issue in such heterogeneous environment is the always best connected (ABC) concept. It allows the best connectivity to services anywhere at anytime. For that, a seamless inter-system handover solution is needed. In our paper, we propose an intelligent solution, based on the context-awareness concept, ensuring service continuity and answering user requirements. We focus on the vertical handover decision issue. It performs whether and over which access network to hand over among those available. It uses advanced decision algorithms (for more efficiency and intelligence) and it is governed by handover policies as decision rules (for more flexibility and optimization).
{"title":"Architecture of an Intelligent Inter-system Handover Management Scheme","authors":"Meriem Kassar, B. Kervella, G. Pujolle","doi":"10.1109/FGCN.2007.70","DOIUrl":"https://doi.org/10.1109/FGCN.2007.70","url":null,"abstract":"In the next generation of wireless networks, mobile users should move across various access technologies, using multi-interface terminals and different types of services. The most important issue in such heterogeneous environment is the always best connected (ABC) concept. It allows the best connectivity to services anywhere at anytime. For that, a seamless inter-system handover solution is needed. In our paper, we propose an intelligent solution, based on the context-awareness concept, ensuring service continuity and answering user requirements. We focus on the vertical handover decision issue. It performs whether and over which access network to hand over among those available. It uses advanced decision algorithms (for more efficiency and intelligence) and it is governed by handover policies as decision rules (for more flexibility and optimization).","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132441226","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}
Mobile IP is a protocol that supports the IP mobility of mobile nodes. However, the protocol has the triangular routing problem. Although many routing optimization extension schemes in IPv6 networks can solve the problem, the delivery of routing optimization messages in the handoff period may incur long transmission delay and message loss, and therefore degrade the performance of routing optimization mechanisms. In addition, all schemes require all mobile nodes and their correspondent nodes to be involved in mobility management. A mobile node must inform its correspondent node of its roaming and its new location address. In this paper, we exploit the domain name system (DNS) to develop a mobility management system. Except granting the access to a new wireless link after roaming, the mobility management is transparent for a mobile node and its correspondent node. No routing optimization message is delivered.
{"title":"Transparent IP Mobility Management","authors":"Huai-Jen Liu, Chih-Hao Wang, Chih-Lin Tseng","doi":"10.1109/FGCN.2007.222","DOIUrl":"https://doi.org/10.1109/FGCN.2007.222","url":null,"abstract":"Mobile IP is a protocol that supports the IP mobility of mobile nodes. However, the protocol has the triangular routing problem. Although many routing optimization extension schemes in IPv6 networks can solve the problem, the delivery of routing optimization messages in the handoff period may incur long transmission delay and message loss, and therefore degrade the performance of routing optimization mechanisms. In addition, all schemes require all mobile nodes and their correspondent nodes to be involved in mobility management. A mobile node must inform its correspondent node of its roaming and its new location address. In this paper, we exploit the domain name system (DNS) to develop a mobility management system. Except granting the access to a new wireless link after roaming, the mobility management is transparent for a mobile node and its correspondent node. No routing optimization message is delivered.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133382864","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}
In this paper, multiple receive antennas are applied to multi-user binary pulse amplitude modulation (2PAM) time hopping (TH) ultra-wideband (UWB) systems to achieve high-data-rate communications. The effects of spatial diversity on the performance of 2PAM-TH-UWB systems are analytically investigated. We derive the expression for the received SINR after spatially combining and evaluate the bit error rate (BER) performance. Numerical results show that the BER performance can be enhanced by spatial diversity combining.
{"title":"Error Performance Analysis of Multi-User Binary PAM TH UWB Systems with Multiple Receive Antennas","authors":"Sunyoung Baek, J. An, Sungsin Lee, Sangchoon Kim","doi":"10.1109/FGCN.2007.118","DOIUrl":"https://doi.org/10.1109/FGCN.2007.118","url":null,"abstract":"In this paper, multiple receive antennas are applied to multi-user binary pulse amplitude modulation (2PAM) time hopping (TH) ultra-wideband (UWB) systems to achieve high-data-rate communications. The effects of spatial diversity on the performance of 2PAM-TH-UWB systems are analytically investigated. We derive the expression for the received SINR after spatially combining and evaluate the bit error rate (BER) performance. Numerical results show that the BER performance can be enhanced by spatial diversity combining.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133466979","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}
This paper proposes a new decoding method based on IR_HARQ scheme that uses rate-compatible LDPC codes as the FEC codes. And it can use the former decoding result, which can improve the performance of decoding scheme. This paper also evaluates the new decoding method by simulation. The results show that better performance both on system throughput and iterative times can be obtained.
{"title":"The New Decoding Method of Rate Compatible LDPC Codes Based on the IR-HARQ Schemes","authors":"Shuya Yang, Hong Wen, Ning He, Liang Zhou","doi":"10.1109/FGCN.2007.214","DOIUrl":"https://doi.org/10.1109/FGCN.2007.214","url":null,"abstract":"This paper proposes a new decoding method based on IR_HARQ scheme that uses rate-compatible LDPC codes as the FEC codes. And it can use the former decoding result, which can improve the performance of decoding scheme. This paper also evaluates the new decoding method by simulation. The results show that better performance both on system throughput and iterative times can be obtained.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133937513","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}
In this paper, we establish a first passage time analysis for event-driven sensor networks with single hop. Our model can be regarded as a theoretical analysis for time cost of message transmission to sink node in an event-driven process in which Slotted ALOHA protocol is implemented. The first passage time Tn,lambda depends on the size n of activated nodes and their transmission rate lambda. Given n, we study the optimal lambda and give the approximation radic1n n/n, further more we give the estimate of the size n from the view point of sink node. So that we can adjust the transmission rate lambda to attain the optimal expected time cost Tmin (n). Numerical result indicates that given the size of active nodes n, the optimal time cost of the procedure increases nearly linearly with n increasing which implies that ALOHA protocol is efficient even in dense event-driven sensor networks.
{"title":"First Passage Time Analysis in Event-Driven Wireless Sensor Networks","authors":"Lu Yu","doi":"10.1109/FGCN.2007.128","DOIUrl":"https://doi.org/10.1109/FGCN.2007.128","url":null,"abstract":"In this paper, we establish a first passage time analysis for event-driven sensor networks with single hop. Our model can be regarded as a theoretical analysis for time cost of message transmission to sink node in an event-driven process in which Slotted ALOHA protocol is implemented. The first passage time Tn,lambda depends on the size n of activated nodes and their transmission rate lambda. Given n, we study the optimal lambda and give the approximation radic1n n/n, further more we give the estimate of the size n from the view point of sink node. So that we can adjust the transmission rate lambda to attain the optimal expected time cost Tmin (n). Numerical result indicates that given the size of active nodes n, the optimal time cost of the procedure increases nearly linearly with n increasing which implies that ALOHA protocol is efficient even in dense event-driven sensor networks.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133961310","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}
Dong-oh Kang, K. Kang, Hyung-Jik Lee, Eun-Jung Ko, Jeunwoo Lee
Recent developments of information technologies are leading the advent of the era of ubiquitous healthcare service, which means healthcare services at any time and at any places. In a home, the ubiquitous healthcare service requires some context aware system for smart services using home network. In this paper, we propose a systematic design tool of a context aware system for ubiquitous healthcare service in a smart home, which is composed of a home gateway, a home server, a PDA, home network healthcare devices, and wearable sensors. We developed a context aware framework to send information from wearable sensors or healthcare devices to healthcare service entities as a middleware to solve the interoperability problem among sensor makers and healthcare service providers. And, we propose a design tool of ubiquitous healthcare services with the context aware framework in a systematic way. In order to show the feasibility of the proposed system, an application example is given, which is applied to a self check service.
{"title":"A Systematic Design Tool of Context Aware System for Ubiquitous Healthcare Service in a Smart Home","authors":"Dong-oh Kang, K. Kang, Hyung-Jik Lee, Eun-Jung Ko, Jeunwoo Lee","doi":"10.1109/FGCN.2007.45","DOIUrl":"https://doi.org/10.1109/FGCN.2007.45","url":null,"abstract":"Recent developments of information technologies are leading the advent of the era of ubiquitous healthcare service, which means healthcare services at any time and at any places. In a home, the ubiquitous healthcare service requires some context aware system for smart services using home network. In this paper, we propose a systematic design tool of a context aware system for ubiquitous healthcare service in a smart home, which is composed of a home gateway, a home server, a PDA, home network healthcare devices, and wearable sensors. We developed a context aware framework to send information from wearable sensors or healthcare devices to healthcare service entities as a middleware to solve the interoperability problem among sensor makers and healthcare service providers. And, we propose a design tool of ubiquitous healthcare services with the context aware framework in a systematic way. In order to show the feasibility of the proposed system, an application example is given, which is applied to a self check service.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122836807","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}
Packet loss in IP networks can be congestive due to IP interrupt queue overflow on the nodes, and non- congestive due to link disruption caused by hardware failure, signal-fading or obstacles. Recognition of two types of losses can largely help TCP endpoints in making right decisions. In this paper we apply the visualized IP-based network simulator (VINS) to characterize the key differences between two types of packet losses. Based on the analyses, improvements for wireless TCP endpoints are proposed on both kernel and application levels in terms of avoiding useless keep-alive probing and congestion window tuning, but re-routing and re-establishing new connections.
{"title":"Suggested Improvements for Wireless TCP Endpoints","authors":"Nanjun Li, W. Zorn","doi":"10.1109/FGCN.2007.206","DOIUrl":"https://doi.org/10.1109/FGCN.2007.206","url":null,"abstract":"Packet loss in IP networks can be congestive due to IP interrupt queue overflow on the nodes, and non- congestive due to link disruption caused by hardware failure, signal-fading or obstacles. Recognition of two types of losses can largely help TCP endpoints in making right decisions. In this paper we apply the visualized IP-based network simulator (VINS) to characterize the key differences between two types of packet losses. Based on the analyses, improvements for wireless TCP endpoints are proposed on both kernel and application levels in terms of avoiding useless keep-alive probing and congestion window tuning, but re-routing and re-establishing new connections.","PeriodicalId":254368,"journal":{"name":"Future Generation Communication and Networking (FGCN 2007)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121210560","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}
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