Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295886
R. Teng, Bing Zhang, Yasuo Tan
In sensor networks, a data query can be named according to the physical attributes, and is generally diffused throughout the network to retrieve sensor data. However, the direct distributions of queries into the network will cause a large traffic overhead and high energy consumption. In this paper, we propose a localized query forwarding scheme based on the processing of query's name. In contrast to the conventional distributions of data query message, a query's name is resolved into the IDs of corresponding group of sensor nodes before being distributed to the network. Therefore, the query is efficiently forwarded into the network within a localized area. The proposed approaches highly reduce the query overhead in the network and save the energy consumption of sensor nodes.
{"title":"An Efficient Message Distribution Scheme for Data Query in Sensor Networks","authors":"R. Teng, Bing Zhang, Yasuo Tan","doi":"10.1109/ITST.2007.4295886","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295886","url":null,"abstract":"In sensor networks, a data query can be named according to the physical attributes, and is generally diffused throughout the network to retrieve sensor data. However, the direct distributions of queries into the network will cause a large traffic overhead and high energy consumption. In this paper, we propose a localized query forwarding scheme based on the processing of query's name. In contrast to the conventional distributions of data query message, a query's name is resolved into the IDs of corresponding group of sensor nodes before being distributed to the network. Therefore, the query is efficiently forwarded into the network within a localized area. The proposed approaches highly reduce the query overhead in the network and save the energy consumption of sensor nodes.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126169590","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295859
Y. Erhel, T. Lambard
The paper presents an original device of collocated sensors designed for the implementation of array processing considering applications within the UHF band. The main objective is to reduce the volume required by a classical multi antennas solution based on space diversity. The proposed solution associates a group of collocated monopoles with different orientations ; it induces a significant reduction of the inter channel correlation under the assumption of a multi path propagation with non stationary polarizations. A low complexity array processing is then tested and improves the performances of the reception if compared to a single channel solution.
{"title":"A Polarization Sensitive Array for DVB-H Applications","authors":"Y. Erhel, T. Lambard","doi":"10.1109/ITST.2007.4295859","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295859","url":null,"abstract":"The paper presents an original device of collocated sensors designed for the implementation of array processing considering applications within the UHF band. The main objective is to reduce the volume required by a classical multi antennas solution based on space diversity. The proposed solution associates a group of collocated monopoles with different orientations ; it induces a significant reduction of the inter channel correlation under the assumption of a multi path propagation with non stationary polarizations. A low complexity array processing is then tested and improves the performances of the reception if compared to a single channel solution.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134454501","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295822
H. Iwasaki, N. Mizuno, K. Hara, Y. Motomura
Recent car navigation systems now provide more content than ever. However, retrieving and selecting such content poses safety issues to users, especially drivers. Moreover, usability issues arise from simple user interfaces. Thus, it is important for the system to recommend content adapted to the user's preferences and situations automatically. In this paper, we analyze the validity of applying a Bayesian network to a user preference model of a content recommendation system in cars. We also present a practical way of building models using an information criterion as well as domain knowledge and an incremental learning method to adapt to individual users.
{"title":"User-Adapted Car Navigation System using a Bayesian Network -Personalized Recommendation of Content","authors":"H. Iwasaki, N. Mizuno, K. Hara, Y. Motomura","doi":"10.1109/ITST.2007.4295822","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295822","url":null,"abstract":"Recent car navigation systems now provide more content than ever. However, retrieving and selecting such content poses safety issues to users, especially drivers. Moreover, usability issues arise from simple user interfaces. Thus, it is important for the system to recommend content adapted to the user's preferences and situations automatically. In this paper, we analyze the validity of applying a Bayesian network to a user preference model of a content recommendation system in cars. We also present a practical way of building models using an information criterion as well as domain knowledge and an incremental learning method to adapt to individual users.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133551850","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295901
T. Ernst, L. Bokor, A. Boutet, Y. Lopez
In this paper we review the progress of an ongoing work which aims at designing and setting up a large-scale open testbed for testing, verification and validation of IPv6-based ITS components. A European Commission partially funded project called ANEMONE provides the ground for the presented architecture by introducing the widest range of access networks and advanced mobility technologies in a pan-European environment.
{"title":"An Open Network for Testing, Verification and Validation of IPv6-based ITS Components","authors":"T. Ernst, L. Bokor, A. Boutet, Y. Lopez","doi":"10.1109/ITST.2007.4295901","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295901","url":null,"abstract":"In this paper we review the progress of an ongoing work which aims at designing and setting up a large-scale open testbed for testing, verification and validation of IPv6-based ITS components. A European Commission partially funded project called ANEMONE provides the ground for the presented architecture by introducing the widest range of access networks and advanced mobility technologies in a pan-European environment.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130643745","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295875
J. Marais, P.-L. Girard, A. Prestail, J. Franchineau, E. de Verdalle
GNSS (Global Navigation Satellite Systems) are of great interest for urban transportation systems, in particular for urban buses. In the ANGO project, positioning will be used for several applications such as delivering driving profile for the driver in order to enhance passenger comfort and reduce gas consumption. This paper focuses on the technical choice for localization. The wish is to provide a GNSS based positioning information. The reception conditions have been analyzed, in particular for GPS, which is the available constellation already in service. But a migration towards Galileo has been studied and the use of some other complementary sensors will also be mentioned.
{"title":"Galileo availability for urban buses","authors":"J. Marais, P.-L. Girard, A. Prestail, J. Franchineau, E. de Verdalle","doi":"10.1109/ITST.2007.4295875","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295875","url":null,"abstract":"GNSS (Global Navigation Satellite Systems) are of great interest for urban transportation systems, in particular for urban buses. In the ANGO project, positioning will be used for several applications such as delivering driving profile for the driver in order to enhance passenger comfort and reduce gas consumption. This paper focuses on the technical choice for localization. The wish is to provide a GNSS based positioning information. The reception conditions have been analyzed, in particular for GPS, which is the available constellation already in service. But a migration towards Galileo has been studied and the use of some other complementary sensors will also be mentioned.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133873779","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295852
M. Sasaki, K. Muto, K. Sasaki
In this paper, we propose a concept of probe car based safety information system. Largely, it is composed of five parts such as scene analysis, knowledge acquisition, knowledge sharing, prediction and estimation, and presentation. One of the most fascinating features we are aiming at is the capability to predict appearance of pedestrians by applying some statistical methods to the database of scene descriptions. Although this concept is under investigation, we will introduce the key technologies to approach it and show some experimental results.
{"title":"Estimation of Driving Safety from On-Board Captured Scene by using Probe Image Database","authors":"M. Sasaki, K. Muto, K. Sasaki","doi":"10.1109/ITST.2007.4295852","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295852","url":null,"abstract":"In this paper, we propose a concept of probe car based safety information system. Largely, it is composed of five parts such as scene analysis, knowledge acquisition, knowledge sharing, prediction and estimation, and presentation. One of the most fascinating features we are aiming at is the capability to predict appearance of pedestrians by applying some statistical methods to the database of scene descriptions. Although this concept is under investigation, we will introduce the key technologies to approach it and show some experimental results.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"318 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132873729","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295840
A. Shimizu, S. Fukuzawa, T. Osafune, M. Hayashi, S. Matsui
There are many researches on the mobile network based on IEEE 802.11 wireless devices. While wireless LAN devices are commonly used, they have been originally designed for office use and have no support for high mobility. Hence, the association establishment (the channel scanning of mobile nodes and the auth/association frame exchange between mobile nodes and access points) and the handoff often fails when we try to utilize the device for the communication between high speed vehicles and infrastructures. We proposed the method that realizes rapid association establishment and optimized handoffs to solve the problems in a compatible form with 802.11 protocol. We realized the proposed method by modifying the standard 802.11 specification of client side. On the evaluation in the actual environment, we showed better thoroughput with the proposed method than the one with the standard 802.11 specification.
{"title":"Enhanced Functions of 802.11 Protocol for Adaptation to Communications between High Speed Vehicles and Infrastructures","authors":"A. Shimizu, S. Fukuzawa, T. Osafune, M. Hayashi, S. Matsui","doi":"10.1109/ITST.2007.4295840","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295840","url":null,"abstract":"There are many researches on the mobile network based on IEEE 802.11 wireless devices. While wireless LAN devices are commonly used, they have been originally designed for office use and have no support for high mobility. Hence, the association establishment (the channel scanning of mobile nodes and the auth/association frame exchange between mobile nodes and access points) and the handoff often fails when we try to utilize the device for the communication between high speed vehicles and infrastructures. We proposed the method that realizes rapid association establishment and optimized handoffs to solve the problems in a compatible form with 802.11 protocol. We realized the proposed method by modifying the standard 802.11 specification of client side. On the evaluation in the actual environment, we showed better thoroughput with the proposed method than the one with the standard 802.11 specification.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131361905","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295898
Ivan Ganchev, M. O'Droma
This paper proposes a new personal IPv6 address scheme and universal Consumer Identity Module (CIM) card for future ubiquitous consumer wireless world (UCWW) established on the Consumer-based Business Model (CBM). The new person-centric, network-independent, IPv6 address class will enable real consumer number ownership and full anytime-anywhere-anyhow portability for future generations of mobile users empowered to opt out of their long-term subscriptions with access network providers (ANPs), and use advertised communication services from any consumer-centric wireless access network present to them. The new proposed universal CIM card will enable users to use their personal IPv6 number with whatever terminal they choose thus facilitating advanced user mobility.
{"title":"New personal IPv6 address scheme and universal CIM card for UCWW","authors":"Ivan Ganchev, M. O'Droma","doi":"10.1109/ITST.2007.4295898","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295898","url":null,"abstract":"This paper proposes a new personal IPv6 address scheme and universal Consumer Identity Module (CIM) card for future ubiquitous consumer wireless world (UCWW) established on the Consumer-based Business Model (CBM). The new person-centric, network-independent, IPv6 address class will enable real consumer number ownership and full anytime-anywhere-anyhow portability for future generations of mobile users empowered to opt out of their long-term subscriptions with access network providers (ANPs), and use advertised communication services from any consumer-centric wireless access network present to them. The new proposed universal CIM card will enable users to use their personal IPv6 number with whatever terminal they choose thus facilitating advanced user mobility.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116282517","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295824
W. Pattara-Atikom, R. Peachavanish
In this study, we investigated an alternative method to estimate the degree of road traffic congestion based on a new measurement metric called cell dwell time (CDT) using simple feedforward backpropagation neural network. CDT is the duration that a cellular phone is registered to a base station before handing off to another base station. As a vehicle with cellular phone traverses along the road, cell handoffs occur and the values of CDT vary. Our assumption is that the values of CDT relate to the degree of traffic congestion and that high CDTs indicate congested traffic. In this study, we measured series of CDTs while driving along arterial roads in Bangkok metropolitan area. Human judgment of traffic condition was recorded into one of the three levels indicating congestion degree -free flow, moderate, or highly congested. Neural network was then trained and tested using the collected data against human perception. The results showed promising performance of congestion estimation with accuracy of 79.43%, precision ranging from 73.53% to 85.19%, and mean square error of 0.44.
{"title":"Estimating Road Traffic Congestion from Cell Dwell Time using Neural Network","authors":"W. Pattara-Atikom, R. Peachavanish","doi":"10.1109/ITST.2007.4295824","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295824","url":null,"abstract":"In this study, we investigated an alternative method to estimate the degree of road traffic congestion based on a new measurement metric called cell dwell time (CDT) using simple feedforward backpropagation neural network. CDT is the duration that a cellular phone is registered to a base station before handing off to another base station. As a vehicle with cellular phone traverses along the road, cell handoffs occur and the values of CDT vary. Our assumption is that the values of CDT relate to the degree of traffic congestion and that high CDTs indicate congested traffic. In this study, we measured series of CDTs while driving along arterial roads in Bangkok metropolitan area. Human judgment of traffic condition was recorded into one of the three levels indicating congestion degree -free flow, moderate, or highly congested. Neural network was then trained and tested using the collected data against human perception. The results showed promising performance of congestion estimation with accuracy of 79.43%, precision ranging from 73.53% to 85.19%, and mean square error of 0.44.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"460 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125083480","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}
Pub Date : 2007-06-06DOI: 10.1109/ITST.2007.4295829
S. Nethi, Chao Gao, R. Jantti, M. Pohjola
In this paper we propose a novel reactive multi-path routing protocol for wireless (and vehicular) ad-hoc networks. The proposed scheme tries to establish and maintain local multiple paths to a certain destination, instead of finding multiple global paths between the source and destination nodes as most other multipath solutions do. To achieve this, we adopt and modify the well-known reactive routing protocol AODV. Using this scheme, source node and intermediate nodes are able to find a better next-hop dynamically when the network topology or traffic activity are changed. A cost function is given to let the related nodes to make decisions. NS-2 simulations show that our scheme gives significant improvement in terms of packet delivery ratio, routing overhead, and energy consumption.
{"title":"Localized Multiple Next-hop Routing Protocol (LMNR)","authors":"S. Nethi, Chao Gao, R. Jantti, M. Pohjola","doi":"10.1109/ITST.2007.4295829","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295829","url":null,"abstract":"In this paper we propose a novel reactive multi-path routing protocol for wireless (and vehicular) ad-hoc networks. The proposed scheme tries to establish and maintain local multiple paths to a certain destination, instead of finding multiple global paths between the source and destination nodes as most other multipath solutions do. To achieve this, we adopt and modify the well-known reactive routing protocol AODV. Using this scheme, source node and intermediate nodes are able to find a better next-hop dynamically when the network topology or traffic activity are changed. A cost function is given to let the related nodes to make decisions. NS-2 simulations show that our scheme gives significant improvement in terms of packet delivery ratio, routing overhead, and energy consumption.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130289848","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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