Pub Date : 2011-06-12DOI: 10.1109/Med-Hoc-Net.2011.5970482
S. Giordano, D. Puccinelli
The recent proliferation of sensor-equipped smartphones has brought sensor networking to the general public in the form of mobile phone sensing. By reaching out to mainstream users, mobile phone sensing has the potential of achieving the pervasive computing vision by putting the human element in the foreground. Because mobile phone sensing may require computationally intensive applications, it is impractical and inefficient to stick to local processing. On the other hand, the emerging trend of offloading expensive tasks to the mobile computing cloud has a significant energy footprint and suffers from the drawbacks of extreme centralization. Opportunistic computing provides an appealing alternative to the mobile computing cloud by allowing devices to join forces and leverage heterogeneous resources from other devices. Because this is only possible by leveraging human mobility, opportunistic computing adds even more prominence to the role of the human element, which is already central to mobile phone sensing and now becomes the key enabler of pervasiveness.
{"title":"The human element as the key enabler of pervasiveness","authors":"S. Giordano, D. Puccinelli","doi":"10.1109/Med-Hoc-Net.2011.5970482","DOIUrl":"https://doi.org/10.1109/Med-Hoc-Net.2011.5970482","url":null,"abstract":"The recent proliferation of sensor-equipped smartphones has brought sensor networking to the general public in the form of mobile phone sensing. By reaching out to mainstream users, mobile phone sensing has the potential of achieving the pervasive computing vision by putting the human element in the foreground. Because mobile phone sensing may require computationally intensive applications, it is impractical and inefficient to stick to local processing. On the other hand, the emerging trend of offloading expensive tasks to the mobile computing cloud has a significant energy footprint and suffers from the drawbacks of extreme centralization. Opportunistic computing provides an appealing alternative to the mobile computing cloud by allowing devices to join forces and leverage heterogeneous resources from other devices. Because this is only possible by leveraging human mobility, opportunistic computing adds even more prominence to the role of the human element, which is already central to mobile phone sensing and now becomes the key enabler of pervasiveness.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125107686","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 : 2011-06-12DOI: 10.1109/Med-Hoc-Net.2011.5970486
Yian Qin, Zhitao He, T. Voigt
Link quality estimation has been an important research topic in the wireless sensor networking community and researchers have developed a large number of different methods to estimate link quality. The commonly used CC2420 radio provides simple signal quality indicators. These are agile in that they react fast to changing link quality but they are inaccurate under complicated channel conditions. More sophisticated link quality estimators combine these simple metrics with packet reception statistics collected by the network stack. These approaches compensate the hardware-based metrics to a limited degree but they compromise agility and incur extra overhead. In this paper, we take a novel approach and develop a number of link quality metrics using a software defined radio. We evaluate our metrics under several channel conditions. The results show that they have good accuracy and can handle complicated channel conditions if combined properly.
{"title":"Towards accurate and agile link quality estimation in wireless sensor networks","authors":"Yian Qin, Zhitao He, T. Voigt","doi":"10.1109/Med-Hoc-Net.2011.5970486","DOIUrl":"https://doi.org/10.1109/Med-Hoc-Net.2011.5970486","url":null,"abstract":"Link quality estimation has been an important research topic in the wireless sensor networking community and researchers have developed a large number of different methods to estimate link quality. The commonly used CC2420 radio provides simple signal quality indicators. These are agile in that they react fast to changing link quality but they are inaccurate under complicated channel conditions. More sophisticated link quality estimators combine these simple metrics with packet reception statistics collected by the network stack. These approaches compensate the hardware-based metrics to a limited degree but they compromise agility and incur extra overhead. In this paper, we take a novel approach and develop a number of link quality metrics using a software defined radio. We evaluate our metrics under several channel conditions. The results show that they have good accuracy and can handle complicated channel conditions if combined properly.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121068743","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 : 2011-06-12DOI: 10.1109/Med-Hoc-Net.2011.5970496
M. Fiore, C. Casetti, C. Chiasserini, Panos Papadimitratos
In vehicular ad hoc networks, knowledge of neighbor positions is a requirement in a number of important tasks. However, distributed techniques to perform secure neighbor position discovery, suitable for highly mobile ad hoc environments, are missing. In this paper, we address this need by proposing a lightweight distributed protocol that relies only on information exchange among neighbors, without any need of a-priori trustworthy nodes. We present a detailed security analysis of our protocol in presence of one or multiple adversaries, and we evaluate its performance in a realistic vehicular environment.
{"title":"Secure neighbor position discovery in vehicular networks","authors":"M. Fiore, C. Casetti, C. Chiasserini, Panos Papadimitratos","doi":"10.1109/Med-Hoc-Net.2011.5970496","DOIUrl":"https://doi.org/10.1109/Med-Hoc-Net.2011.5970496","url":null,"abstract":"In vehicular ad hoc networks, knowledge of neighbor positions is a requirement in a number of important tasks. However, distributed techniques to perform secure neighbor position discovery, suitable for highly mobile ad hoc environments, are missing. In this paper, we address this need by proposing a lightweight distributed protocol that relies only on information exchange among neighbors, without any need of a-priori trustworthy nodes. We present a detailed security analysis of our protocol in presence of one or multiple adversaries, and we evaluate its performance in a realistic vehicular environment.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116850293","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 : 2011-06-12DOI: 10.1109/Med-Hoc-Net.2011.5970485
H. Hellbrück, Max Pagel, A. Kröller, Daniel Bimschas, D. Pfisterer, S. Fischer
Current surveys and forecast predict that the number of wireless devices is going to increase tremendously. These wireless devices can be computers of all kinds, notebooks, netbooks, Smartphones and sensor nodes that evolve into real-world scenarios forming a “Real-World-Internet” in the future. In our work we focus on the Future Internet with small battery driven devices forming the “Internet of Things”. In recent networking research, testbeds gain more and more attention, especially in the context of Future Internet and wireless sensor networks (WSNs). This development stems from the fact that simulations and even emulations are not considered sufficient for the deployment of new technologies as they often lack realism. Experimental research on testbeds is a promising alternative that can help to close the gap. The deployment of testbeds is challenging and user and operator requirements need to be considered carefully. Therefore, the goal is to design an architecture that allows operators of WSN testbeds to offer numerous users access to their testbeds in a standardized flexible way that matches these requirements. In this paper we first identify some of the requirements, then introduce the architecture and general concepts of our WISEBED approach and show how this architecture meets the requirements of both groups. We give an overview of existing WISEBED-compatible WSN testbeds that can be used for experimentation today. Main focus in this paper compared to previous work is to address the perspective of both users and operators on how to experiment or respectively operate a WSN testbed based on WISEBED technology.
{"title":"Using and operating wireless sensor network testbeds with WISEBED","authors":"H. Hellbrück, Max Pagel, A. Kröller, Daniel Bimschas, D. Pfisterer, S. Fischer","doi":"10.1109/Med-Hoc-Net.2011.5970485","DOIUrl":"https://doi.org/10.1109/Med-Hoc-Net.2011.5970485","url":null,"abstract":"Current surveys and forecast predict that the number of wireless devices is going to increase tremendously. These wireless devices can be computers of all kinds, notebooks, netbooks, Smartphones and sensor nodes that evolve into real-world scenarios forming a “Real-World-Internet” in the future. In our work we focus on the Future Internet with small battery driven devices forming the “Internet of Things”. In recent networking research, testbeds gain more and more attention, especially in the context of Future Internet and wireless sensor networks (WSNs). This development stems from the fact that simulations and even emulations are not considered sufficient for the deployment of new technologies as they often lack realism. Experimental research on testbeds is a promising alternative that can help to close the gap. The deployment of testbeds is challenging and user and operator requirements need to be considered carefully. Therefore, the goal is to design an architecture that allows operators of WSN testbeds to offer numerous users access to their testbeds in a standardized flexible way that matches these requirements. In this paper we first identify some of the requirements, then introduce the architecture and general concepts of our WISEBED approach and show how this architecture meets the requirements of both groups. We give an overview of existing WISEBED-compatible WSN testbeds that can be used for experimentation today. Main focus in this paper compared to previous work is to address the perspective of both users and operators on how to experiment or respectively operate a WSN testbed based on WISEBED technology.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128030698","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 : 2011-06-12DOI: 10.1109/Med-Hoc-Net.2011.5970490
Anna Sidera, S. Toumpis
We introduce the Delay Tolerant Firework Routing (DTFR) protocol, a protocol designed for routing in wireless Delay Tolerant Networks (DTNs) that consist of very large numbers of highly mobile nodes. Under DTFR, each packet initially travels, using high priority transmissions, to a target region in the network where the destination is expected to be. Once there, the packet is replicated to a number of copies that spread across the target region, in search of the destination. As soon as a copy finds a known route to the destination, it follows it and gets delivered.
{"title":"DTFR: A geographic routing protocol for wireless Delay Tolerant Networks","authors":"Anna Sidera, S. Toumpis","doi":"10.1109/Med-Hoc-Net.2011.5970490","DOIUrl":"https://doi.org/10.1109/Med-Hoc-Net.2011.5970490","url":null,"abstract":"We introduce the Delay Tolerant Firework Routing (DTFR) protocol, a protocol designed for routing in wireless Delay Tolerant Networks (DTNs) that consist of very large numbers of highly mobile nodes. Under DTFR, each packet initially travels, using high priority transmissions, to a target region in the network where the destination is expected to be. Once there, the packet is replicated to a number of copies that spread across the target region, in search of the destination. As soon as a copy finds a known route to the destination, it follows it and gets delivered.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128497581","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 : 2011-06-12DOI: 10.1109/MED-HOC-NET.2011.5970484
Stefano Paniga, L. Borsani, A. Redondi, M. Tagliasacchi, M. Cesana
Wireless Multimedia Sensor Networks (WMSNs) are recently emerging as an extension to traditional scalar wireless sensor networks, with the distinctive feature of supporting the acquisition and delivery of multimedia content such as audio, images and video. In this paper, a complete framework is proposed and developed for streaming video flows in WMSNs. Such framework is designed in a cross-layer fashion with three main building blocks: (i) a hybrid DPCM/DCT encoder; (ii) a congestion control mechanism and (iii) a selective priority automatic request mechanism at the MAC layer. The system has been implemented on the IntelMote2 platform operated by TinyOS and thoroughly evaluated through testbed experiments on multi-hop WMSNs. The source code of the whole system is publicly available to enable reproducible research.
{"title":"Experimental evaluation of a video streaming system for Wireless Multimedia Sensor Networks","authors":"Stefano Paniga, L. Borsani, A. Redondi, M. Tagliasacchi, M. Cesana","doi":"10.1109/MED-HOC-NET.2011.5970484","DOIUrl":"https://doi.org/10.1109/MED-HOC-NET.2011.5970484","url":null,"abstract":"Wireless Multimedia Sensor Networks (WMSNs) are recently emerging as an extension to traditional scalar wireless sensor networks, with the distinctive feature of supporting the acquisition and delivery of multimedia content such as audio, images and video. In this paper, a complete framework is proposed and developed for streaming video flows in WMSNs. Such framework is designed in a cross-layer fashion with three main building blocks: (i) a hybrid DPCM/DCT encoder; (ii) a congestion control mechanism and (iii) a selective priority automatic request mechanism at the MAC layer. The system has been implemented on the IntelMote2 platform operated by TinyOS and thoroughly evaluated through testbed experiments on multi-hop WMSNs. The source code of the whole system is publicly available to enable reproducible research.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124680955","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 : 2011-06-01DOI: 10.1109/Med-Hoc-Net.2011.5970474
L. Caviglione, G. Ciaccio, V. Gianuzzi
As one of the main tasks of a project for developing an Advanced Cooperative Infomobility System (ACIS), we have devised and partly implemented a communication middleware for infomobility applications on vehicular ad-hoc networks (VANETs). In this paper we illustrate and motivate some of the architectural choices underlying the ACIS middleware.
{"title":"Architecture of a communication middleware for VANET applications","authors":"L. Caviglione, G. Ciaccio, V. Gianuzzi","doi":"10.1109/Med-Hoc-Net.2011.5970474","DOIUrl":"https://doi.org/10.1109/Med-Hoc-Net.2011.5970474","url":null,"abstract":"As one of the main tasks of a project for developing an Advanced Cooperative Infomobility System (ACIS), we have devised and partly implemented a communication middleware for infomobility applications on vehicular ad-hoc networks (VANETs). In this paper we illustrate and motivate some of the architectural choices underlying the ACIS middleware.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117279026","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 : 2011-05-13DOI: 10.1109/Med-Hoc-Net.2011.5970472
C. Oliveira, Fabrice Théoleyre, A. Duda
Multi-channel multi-interface Wireless Mesh Networks permit to spread the load across orthogonal channels to improve network capacity. Although broadcast is vital for many layer-3 protocols, proposals for taking advantage of multiple channels mostly focus on unicast transmissions. In this paper, we propose broadcast algorithms that fit any channel and interface assignment strategy. They guarantee that a broadcast packet is delivered with a minimum probability to all neighbors. Our simulations show that the proposed algorithms efficiently limit the overhead.
{"title":"Broadcast strategies with probabilistic delivery guarantee in multi-channel multi-interface Wireless Mesh Networks","authors":"C. Oliveira, Fabrice Théoleyre, A. Duda","doi":"10.1109/Med-Hoc-Net.2011.5970472","DOIUrl":"https://doi.org/10.1109/Med-Hoc-Net.2011.5970472","url":null,"abstract":"Multi-channel multi-interface Wireless Mesh Networks permit to spread the load across orthogonal channels to improve network capacity. Although broadcast is vital for many layer-3 protocols, proposals for taking advantage of multiple channels mostly focus on unicast transmissions. In this paper, we propose broadcast algorithms that fit any channel and interface assignment strategy. They guarantee that a broadcast packet is delivered with a minimum probability to all neighbors. Our simulations show that the proposed algorithms efficiently limit the overhead.","PeriodicalId":350979,"journal":{"name":"2011 The 10th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115138353","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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