Pub Date : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976241
Christine Jardak, K. Rerkrai, A. Kovacevic, Janne Riihijärvi, P. Mähönen
We describe the design of a large-scale wireless sensor network for agriculture monitoring. We have deployed a prototype of 64 sensors to monitor a commercial vineyard. The system provides different software modules ranging from filtering raw data to a centralized and a distributed data storage applications. The used protocols ensure reliable and robust communication and load-balancing energy consumption. A backend server provides a user-friendly graphical interface offering two main functionalities: logging communication messages of the employed protocols for diagnostic purposes and providing end-user support for both on-demand and periodic data requests. We highlight the efficiency of such a network in comparison to the traditionally used solution based on individual weather station by deploying both systems in parallel and comparing their reading results. The results clearly demonstrate that wireless sensor networks provide better geographic coverage and an increased spatial resolution compared to traditional solutions. They also enable precise measurements of soil conditions near the plants themselves, increasing the quality of the information available to the farmer.
{"title":"Email from the vineyard","authors":"Christine Jardak, K. Rerkrai, A. Kovacevic, Janne Riihijärvi, P. Mähönen","doi":"10.1109/TRIDENTCOM.2009.4976241","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976241","url":null,"abstract":"We describe the design of a large-scale wireless sensor network for agriculture monitoring. We have deployed a prototype of 64 sensors to monitor a commercial vineyard. The system provides different software modules ranging from filtering raw data to a centralized and a distributed data storage applications. The used protocols ensure reliable and robust communication and load-balancing energy consumption. A backend server provides a user-friendly graphical interface offering two main functionalities: logging communication messages of the employed protocols for diagnostic purposes and providing end-user support for both on-demand and periodic data requests. We highlight the efficiency of such a network in comparison to the traditionally used solution based on individual weather station by deploying both systems in parallel and comparing their reading results. The results clearly demonstrate that wireless sensor networks provide better geographic coverage and an increased spatial resolution compared to traditional solutions. They also enable precise measurements of soil conditions near the plants themselves, increasing the quality of the information available to the farmer.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127537841","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976208
Mu Mu, A. Mauthe, J. Casson, Gareth Tyson, Francisco J. Garcia
Currently, a complete system for analyzing the effect of packet loss on a viewer's perception is not available. Given the popularity of digital video and the growing interest in live video streams where channel coding errors cannot be corrected, such a system would give great insight into the problem of video corruption through transmission errors and how they are perceived by the user. In this paper we introduce such a system, where digital video can be corrupted according to established loss patterns and the effect is measured automatically. The corrupted video is then used as input for user tests. Their results are analyzed and compared with the automatically generated. Within this paper we present the complete testing system that makes use of existing software as well as introducing new modules and extensions. With the current configuration the system can test packet loss in H.264 coded video streams and produce a statistical analysis detailing the results. The system is fully modular allowing for future developments such as other types of statistical analysis, different video measurements and new video codecs.
{"title":"LA1 testBed: Evaluation testbed to assess the impact of network impairments on video quality","authors":"Mu Mu, A. Mauthe, J. Casson, Gareth Tyson, Francisco J. Garcia","doi":"10.1109/TRIDENTCOM.2009.4976208","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976208","url":null,"abstract":"Currently, a complete system for analyzing the effect of packet loss on a viewer's perception is not available. Given the popularity of digital video and the growing interest in live video streams where channel coding errors cannot be corrected, such a system would give great insight into the problem of video corruption through transmission errors and how they are perceived by the user. In this paper we introduce such a system, where digital video can be corrupted according to established loss patterns and the effect is measured automatically. The corrupted video is then used as input for user tests. Their results are analyzed and compared with the automatically generated. Within this paper we present the complete testing system that makes use of existing software as well as introducing new modules and extensions. With the current configuration the system can test packet loss in H.264 coded video streams and produce a statistical analysis detailing the results. The system is fully modular allowing for future developments such as other types of statistical analysis, different video measurements and new video codecs.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125155178","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976262
S. Karunagaran, Sudharsan Sundararajan, Jayaraj Poroor, Amit Dhar, Ranjith Pillai
Multimedia Information delivery in public transportation systems is gaining increasing prominence. This paper proposes mesh-tree architecture for low latency and highthroughput data transfer to mobile vehicles along approach roads in and around a bus station. Prior works have demonstrated 802.11b-based wireless chain topology for mobile vehicle connectivity along railroads. However, the chain topology is known to result in high hop counts and poor end-to-end latency. Furthermore, a break in any of the links would disconnect the remainder of the chain from the network. Hence, we propose mesh-tree architecture in order to overcome these drawbacks of the conventional chain topology. We discuss the architecture, antenna selection, deployment and performance results of a 14-node multi-hop 802.11a/g-based wireless test bed1 that mimics a large bus terminus. Our results clearly underscore the potential utility of mesh-tree architecture in achieving low latency and high-throughput data transfer leading to superior mobile vehicle connectivity.
{"title":"Mesh-tree topology for vehicular networks","authors":"S. Karunagaran, Sudharsan Sundararajan, Jayaraj Poroor, Amit Dhar, Ranjith Pillai","doi":"10.1109/TRIDENTCOM.2009.4976262","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976262","url":null,"abstract":"Multimedia Information delivery in public transportation systems is gaining increasing prominence. This paper proposes mesh-tree architecture for low latency and highthroughput data transfer to mobile vehicles along approach roads in and around a bus station. Prior works have demonstrated 802.11b-based wireless chain topology for mobile vehicle connectivity along railroads. However, the chain topology is known to result in high hop counts and poor end-to-end latency. Furthermore, a break in any of the links would disconnect the remainder of the chain from the network. Hence, we propose mesh-tree architecture in order to overcome these drawbacks of the conventional chain topology. We discuss the architecture, antenna selection, deployment and performance results of a 14-node multi-hop 802.11a/g-based wireless test bed1 that mimics a large bus terminus. Our results clearly underscore the potential utility of mesh-tree architecture in achieving low latency and high-throughput data transfer leading to superior mobile vehicle connectivity.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114396933","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976244
Xuedong Liang, Min Chen, Yang Xiao, I. Balasingham, Victor C. M. Leung
Cooperative communications have been demonstrated to be effective in combating the multiple fading effects in wireless networks, and improving the network performance in terms of adaptivity, reliability, data throughput and network life time. In this paper, we investigate the use of cooperative communications for quality of service (QoS) provisioning in resource-constrained wireless sensor networks, and propose MRL-CC, a Multi-agent Reinforcement Learning based multi-hop mesh Cooperative Communication mechanism for wireless sensor networks. In order to disseminate data reliably in MRL-CC, a multi-hop mesh cooperative structure is first constructed. Then a cooperative mechanism with cooperative partner assignments, and coding and transmission schemes is implemented using a multi-agent reinforcement learning algorithm. We compare the network performance of MRL-CC with MMCC [1], a Multi-hop Mesh structure based Cooperative Communication scheme, and investigate the impacts of network traffic load, interference and sensor node's mobility on the network performance. Simulation results show that MRL-CC performs well in terms of a number of QoS metrics, and fits well in large-scale networks and highly dynamic environments.
{"title":"A novel cooperative communication protocol for QoS provisioning in wireless sensor networks","authors":"Xuedong Liang, Min Chen, Yang Xiao, I. Balasingham, Victor C. M. Leung","doi":"10.1109/TRIDENTCOM.2009.4976244","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976244","url":null,"abstract":"Cooperative communications have been demonstrated to be effective in combating the multiple fading effects in wireless networks, and improving the network performance in terms of adaptivity, reliability, data throughput and network life time. In this paper, we investigate the use of cooperative communications for quality of service (QoS) provisioning in resource-constrained wireless sensor networks, and propose MRL-CC, a Multi-agent Reinforcement Learning based multi-hop mesh Cooperative Communication mechanism for wireless sensor networks. In order to disseminate data reliably in MRL-CC, a multi-hop mesh cooperative structure is first constructed. Then a cooperative mechanism with cooperative partner assignments, and coding and transmission schemes is implemented using a multi-agent reinforcement learning algorithm. We compare the network performance of MRL-CC with MMCC [1], a Multi-hop Mesh structure based Cooperative Communication scheme, and investigate the impacts of network traffic load, interference and sensor node's mobility on the network performance. Simulation results show that MRL-CC performs well in terms of a number of QoS metrics, and fits well in large-scale networks and highly dynamic environments.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116817490","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976201
A. Mutter, M. Köhn, M. Sund
Packet assembly at the network edge is one solution to reduce the high packet rates in core network switches. For this, specialized edge nodes called Assembly Units are needed that assemble client packets into containers and vice versa. In this paper we present the detailed architecture and implementation of a generic Frame Assembly Unit for the Frame Switching architecture along with the testbed used for validation. Our design supports timer and threshold based assembly including packet fragmentation for fixed and variable size container frames at 10 Gbps per direction. For assembly and packet delineation we use the ITU-T Generic Framing Procedure. We report performance and implementation results for an overall design that operates with a 128 Bit data-path at 100 MHz on Xilinx Virtex4 FPGAs
{"title":"A generic 10 Gbps assembly edge node and testbed for frame switching networks","authors":"A. Mutter, M. Köhn, M. Sund","doi":"10.1109/TRIDENTCOM.2009.4976201","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976201","url":null,"abstract":"Packet assembly at the network edge is one solution to reduce the high packet rates in core network switches. For this, specialized edge nodes called Assembly Units are needed that assemble client packets into containers and vice versa. In this paper we present the detailed architecture and implementation of a generic Frame Assembly Unit for the Frame Switching architecture along with the testbed used for validation. Our design supports timer and threshold based assembly including packet fragmentation for fixed and variable size container frames at 10 Gbps per direction. For assembly and packet delineation we use the ITU-T Generic Framing Procedure. We report performance and implementation results for an overall design that operates with a 128 Bit data-path at 100 MHz on Xilinx Virtex4 FPGAs","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124681963","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 : 2009-04-06DOI: 10.1504/IJCNDS.2010.033969
Carlos R. Senna, L. Bittencourt, E. Madeira
Grid computing has emerged as a powerful environment for parallel processing. Nowadays, many organizations participate in one or more grid computing infrastructures, sharing computational resources to achieve high computational power and/or very large storage capacities. Mostly, these grids provide application interfaces for the user to submit jobs or workflows. These interfaces receive the submissions and distribute them among the grid resources. In this paper we evaluate a service-oriented grid testbed. Jobs are submitted through a workflow manager using a workflow composition language which allows services to be invoked sequentially or in parallel. Experimental results show that the overhead when using a service composition scheme does not prevent the grid from giving fast workflow execution. In our testbed, for a median filter application, we were able to get executions in the order of five times faster using the grid when compared to the local execution.
{"title":"Execution of service workflows in grid environments","authors":"Carlos R. Senna, L. Bittencourt, E. Madeira","doi":"10.1504/IJCNDS.2010.033969","DOIUrl":"https://doi.org/10.1504/IJCNDS.2010.033969","url":null,"abstract":"Grid computing has emerged as a powerful environment for parallel processing. Nowadays, many organizations participate in one or more grid computing infrastructures, sharing computational resources to achieve high computational power and/or very large storage capacities. Mostly, these grids provide application interfaces for the user to submit jobs or workflows. These interfaces receive the submissions and distribute them among the grid resources. In this paper we evaluate a service-oriented grid testbed. Jobs are submitted through a workflow manager using a workflow composition language which allows services to be invoked sequentially or in parallel. Experimental results show that the overhead when using a service composition scheme does not prevent the grid from giving fast workflow execution. In our testbed, for a median filter application, we were able to get executions in the order of five times faster using the grid when compared to the local execution.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130629364","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976202
N. Blum, T. Magedanz, F. Schreiner, S. Wahle
Modern telecommunication networks and classical roles of operators are subject to fundamental change. On the one hand many network operators are currently seeking for new sources to generate revenue by exposing network capabilities to 3rd party service providers, on the other hand core network technologies have been re-defined under the label of NGN and the transition from existing legacy infrastructures towards NGN is ongoing. At the same time we can observe that service providers on the World Wide Web (WWW) are becoming more mature in terms of the definition of APIs and functionalities provided for mobile users offered over-the-top of existing telecommunications infrastructure. This report describes our approach to setup an infrastructure to explore and prototype technologies for a Service Delivery Framework based on Service Oriented Architecture principles that allows the autonomous composition of services. The work depicted in this paper serves as a starting point for the composition of services in inter-domain, federated testbed environments as currently designed by the European Union Seventh Framework Programme Pan-European Laboratory Infrastructure Implementation (PII) project.
{"title":"A research infrastructure for SOA-based Service Delivery Frameworks","authors":"N. Blum, T. Magedanz, F. Schreiner, S. Wahle","doi":"10.1109/TRIDENTCOM.2009.4976202","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976202","url":null,"abstract":"Modern telecommunication networks and classical roles of operators are subject to fundamental change. On the one hand many network operators are currently seeking for new sources to generate revenue by exposing network capabilities to 3rd party service providers, on the other hand core network technologies have been re-defined under the label of NGN and the transition from existing legacy infrastructures towards NGN is ongoing. At the same time we can observe that service providers on the World Wide Web (WWW) are becoming more mature in terms of the definition of APIs and functionalities provided for mobile users offered over-the-top of existing telecommunications infrastructure. This report describes our approach to setup an infrastructure to explore and prototype technologies for a Service Delivery Framework based on Service Oriented Architecture principles that allows the autonomous composition of services. The work depicted in this paper serves as a starting point for the composition of services in inter-domain, federated testbed environments as currently designed by the European Union Seventh Framework Programme Pan-European Laboratory Infrastructure Implementation (PII) project.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123817096","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976216
L. Bokor, Árpád Huszák, G. Jeney
Multihoming is one of the most attractive features of SCTP (Stream Control Transmission Protocol) aiming to make this prosperous transport scheme competitive in mobile environments when the mobile hosts are equipped with multiple interfaces. The complementary characteristic of the 3G UMTS (Universal Mobile Telecommunications System) and WLAN (Wireless Local Area Network) architectures motivates operators to integrate these two successful technologies. Recently spreading wireless devices are increasingly provided with multiple networking interfaces such enabling end-users to access Internet services using e.g. the WLAN's higher bandwidth wherever available, and connecting to the UMTS network in other cases. This paper investigates the performance of multihomed SCTP hosts through extensive experimental studies in such an integrated heterogeneous environment. In order to do this we designed and implemented a real native IPv6 UMTS-LAN testbed equipped with novel IPv6-based mobile technologies, such providing ideal conditions for SCTP multihoming performance analysis. In this testbed architecture we analyzed numerous settings to measure the handover behavior of the protocol in terms of handover effectiveness, link changeover characteristics, throughput and transmission delay. As our results show, accurate SCTP parameter setup can significantly decrease the handover delay and eliminate the data transmission interrupts.
{"title":"On SCTP multihoming performance in native IPv6 UMTS-WLAN environments","authors":"L. Bokor, Árpád Huszák, G. Jeney","doi":"10.1109/TRIDENTCOM.2009.4976216","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976216","url":null,"abstract":"Multihoming is one of the most attractive features of SCTP (Stream Control Transmission Protocol) aiming to make this prosperous transport scheme competitive in mobile environments when the mobile hosts are equipped with multiple interfaces. The complementary characteristic of the 3G UMTS (Universal Mobile Telecommunications System) and WLAN (Wireless Local Area Network) architectures motivates operators to integrate these two successful technologies. Recently spreading wireless devices are increasingly provided with multiple networking interfaces such enabling end-users to access Internet services using e.g. the WLAN's higher bandwidth wherever available, and connecting to the UMTS network in other cases. This paper investigates the performance of multihomed SCTP hosts through extensive experimental studies in such an integrated heterogeneous environment. In order to do this we designed and implemented a real native IPv6 UMTS-LAN testbed equipped with novel IPv6-based mobile technologies, such providing ideal conditions for SCTP multihoming performance analysis. In this testbed architecture we analyzed numerous settings to measure the handover behavior of the protocol in terms of handover effectiveness, link changeover characteristics, throughput and transmission delay. As our results show, accurate SCTP parameter setup can significantly decrease the handover delay and eliminate the data transmission interrupts.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131762184","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976211
E. Mikóczy, S. Schumann, H. Stokking, M. O. Deventer, O. Niamut
This paper describes the general concept of combinational/blended services for IP-based Television IPTV) services in next generation networks towards its service oriented architecture concept (SOA). Besides introducing general approaches of service reusability (SOA concepts), the service enables (e.g. presence, notification, messaging) as application service function in next generation networks will be outlined by standardization work in ETSI TISPANn and also explicit examples of prototypes are given. The extensibility will be elaborated within the IPTV subsystem and also as the possible interconnection with web services. Selected cases have been successfully prototyped and deployed exemplary in the laboratory testbed.
{"title":"Combinational services of NGN based IPTV","authors":"E. Mikóczy, S. Schumann, H. Stokking, M. O. Deventer, O. Niamut","doi":"10.1109/TRIDENTCOM.2009.4976211","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976211","url":null,"abstract":"This paper describes the general concept of combinational/blended services for IP-based Television IPTV) services in next generation networks towards its service oriented architecture concept (SOA). Besides introducing general approaches of service reusability (SOA concepts), the service enables (e.g. presence, notification, messaging) as application service function in next generation networks will be outlined by standardization work in ETSI TISPANn and also explicit examples of prototypes are given. The extensibility will be elaborated within the IPTV subsystem and also as the possible interconnection with web services. Selected cases have been successfully prototyped and deployed exemplary in the laboratory testbed.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130750383","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 : 2009-04-06DOI: 10.1109/TRIDENTCOM.2009.4976256
S. Kukliński, G. Wolny
In this paper we present a new multilevel clustering algorithm for Vehicular Ad-Hoc Networks (VANET), which we will call the Density Based Clustering (DBC) algorithm. Our solution is focused on the formation of stable, long living clusters for reliable communication. Cluster formation is based on complex clustering metric which takes into account density of connection graph, link quality and traffic conditions. Tests performed in the simulation environment composed from VanetMobiSim and JiST/SWANS have shown that algorithm performs better than the popular classic approach (the Lowest Id algorithm [1]) - the clusters stability is significantly increased.
{"title":"Density based clustering algorithm for VANETs","authors":"S. Kukliński, G. Wolny","doi":"10.1109/TRIDENTCOM.2009.4976256","DOIUrl":"https://doi.org/10.1109/TRIDENTCOM.2009.4976256","url":null,"abstract":"In this paper we present a new multilevel clustering algorithm for Vehicular Ad-Hoc Networks (VANET), which we will call the Density Based Clustering (DBC) algorithm. Our solution is focused on the formation of stable, long living clusters for reliable communication. Cluster formation is based on complex clustering metric which takes into account density of connection graph, link quality and traffic conditions. Tests performed in the simulation environment composed from VanetMobiSim and JiST/SWANS have shown that algorithm performs better than the popular classic approach (the Lowest Id algorithm [1]) - the clusters stability is significantly increased.","PeriodicalId":254380,"journal":{"name":"2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133318220","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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