Pub Date : 2013-11-14DOI: 10.1109/IWMN.2013.6663785
A. S. Cacciapuoti, M. Caleffi, Francesco Marino, L. Paura
In this paper, we address the choice of the routing update period in Cognitive Radio Ad Hoc Networks with the objective of maximizing the capacity available at an arbitrary node acting as source. To this aim, first, the problem of the routing update period is reformulated to account for the slotted nature of the Cognitive Radio time induced by the spectrum sensing functionality. Then, we analytically derive the available capacity at the source node as function of the routing update period through closed-form expressions. The mathematical analysis is carried out by adopting three different routing update strategies and two different PU activity models. The theoretical analysis is validate through numerical simulations.
{"title":"Routing update period in Cognitive Radio Ad Hoc Networks","authors":"A. S. Cacciapuoti, M. Caleffi, Francesco Marino, L. Paura","doi":"10.1109/IWMN.2013.6663785","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663785","url":null,"abstract":"In this paper, we address the choice of the routing update period in Cognitive Radio Ad Hoc Networks with the objective of maximizing the capacity available at an arbitrary node acting as source. To this aim, first, the problem of the routing update period is reformulated to account for the slotted nature of the Cognitive Radio time induced by the spectrum sensing functionality. Then, we analytically derive the available capacity at the source node as function of the routing update period through closed-form expressions. The mathematical analysis is carried out by adopting three different routing update strategies and two different PU activity models. The theoretical analysis is validate through numerical simulations.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114716133","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663769
F. Lamonaca, D. Grimaldi
In the synchronization of Wireless Sensors Network an open problem is the hot-plugging of a new node because it would temporarily degrades the synchronization accuracy among already synchronized nodes. The paper proposes the adoption of a completely decentralized synchronization procedure based on the consensus to (i) detect the presence of a new added node, (ii) avoid that it perturbs the synchronization accuracy, and (iii) force the new node to converge to the common sense of time of the already synchronized nodes. Numerical results are shown to assess the suitability of the proposed procedure and to draw information for experimental tests.
{"title":"Synchronization for hot-plugging node in Wireless Sensor Network","authors":"F. Lamonaca, D. Grimaldi","doi":"10.1109/IWMN.2013.6663769","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663769","url":null,"abstract":"In the synchronization of Wireless Sensors Network an open problem is the hot-plugging of a new node because it would temporarily degrades the synchronization accuracy among already synchronized nodes. The paper proposes the adoption of a completely decentralized synchronization procedure based on the consensus to (i) detect the presence of a new added node, (ii) avoid that it perturbs the synchronization accuracy, and (iii) force the new node to converge to the common sense of time of the already synchronized nodes. Numerical results are shown to assess the suitability of the proposed procedure and to draw information for experimental tests.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"25 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115822501","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663795
K. Kyriakopoulos, Francisco J. Aparicio-Navarro, D. Parish
One of the main problems in open wireless networks is the inability of authenticating the identity of a wireless client or Access Point (AP). This issue is a concern because, a malicious entity could masquerade as the legal AP and entice a wireless client to establish a connection with a Rogue AP. Previous work by the authors has developed the algorithms used in this work but, in contrast to prior work, there was no analysis or experimentation with Rogue AP attacks. Our purpose in this work is to detect injection type of Rogue AP activity by identifying whether a frame is genuinely transmitted by the legal AP or not. To this end, an identity profile for the legal AP is built by fusing multi-layer metrics, using the Dempster-Shafer algorithm. The results show high detection results with low false alarms for detecting Rogue AP attacks without requiring configuration from an administrator.
{"title":"Detecting misbehaviour in WiFi using multi-layer metric data fusion","authors":"K. Kyriakopoulos, Francisco J. Aparicio-Navarro, D. Parish","doi":"10.1109/IWMN.2013.6663795","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663795","url":null,"abstract":"One of the main problems in open wireless networks is the inability of authenticating the identity of a wireless client or Access Point (AP). This issue is a concern because, a malicious entity could masquerade as the legal AP and entice a wireless client to establish a connection with a Rogue AP. Previous work by the authors has developed the algorithms used in this work but, in contrast to prior work, there was no analysis or experimentation with Rogue AP attacks. Our purpose in this work is to detect injection type of Rogue AP activity by identifying whether a frame is genuinely transmitted by the legal AP or not. To this end, an identity profile for the legal AP is built by fusing multi-layer metrics, using the Dempster-Shafer algorithm. The results show high detection results with low false alarms for detecting Rogue AP attacks without requiring configuration from an administrator.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115045041","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663772
Rafael Reinhold
Wireless sensor networks for industrial communication require high reliability and low latency. Since state of the art wireless sensor networks do not entirely meet these requirements, novel system approaches need to be developed. Ultra wideband communication systems seem to be a promising approach due to the high bandwidth and the resulting robustness against frequency selectivity. Therefore, this paper analyzes the IEEE 802.15.4a impulse-radio ultra-wideband physical layer for the application in wireless sensor networks. The packet error rate for two types of receiver - energy detector and correlation receiver - is evaluated with respect to signal-to-noise ratio. Taking into account regulatory limitations and realistic transceiver characteristics, the maximal achievable coverage range is derived. As a result, the dependency between required reliability of a wireless sensor transmission and the achievable operating distance is given. This upper bound can be used as decision guideline in order to select a suitable system for deployment of a wireless sensor network.
{"title":"Coverage range analysis of IEEE 802.15.4a IR-UWB for reliable data transmission in wireless sensor networks","authors":"Rafael Reinhold","doi":"10.1109/IWMN.2013.6663772","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663772","url":null,"abstract":"Wireless sensor networks for industrial communication require high reliability and low latency. Since state of the art wireless sensor networks do not entirely meet these requirements, novel system approaches need to be developed. Ultra wideband communication systems seem to be a promising approach due to the high bandwidth and the resulting robustness against frequency selectivity. Therefore, this paper analyzes the IEEE 802.15.4a impulse-radio ultra-wideband physical layer for the application in wireless sensor networks. The packet error rate for two types of receiver - energy detector and correlation receiver - is evaluated with respect to signal-to-noise ratio. Taking into account regulatory limitations and realistic transceiver characteristics, the maximal achievable coverage range is derived. As a result, the dependency between required reliability of a wireless sensor transmission and the achievable operating distance is given. This upper bound can be used as decision guideline in order to select a suitable system for deployment of a wireless sensor network.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123359703","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663798
J. Sheu, P. Sahoo, Pei Liu
With the advance of wireless communications technologies, it has been proved that the usage of relay stations can improve the transmission rate and enlarge the coverage. The present usage of relay stations (RS) focus on retransmitting signal to the destination to ensure the correctness of signal. In this paper, we propose a novel relay transmission scheme and consider in using the bandwidth between the BS and RS for relaying the required data of User Equipments (UEs). In order to use the bandwidth resource efficiently, our proposed scheme considers the transmission time of the UEs under different requirement of data and assigns the bandwidth resource to reduce the overall transmission time. The simulation results show that our proposed scheme can reduce the overall transmission time noticeably compared to the method that does not assign the bandwidth resource.
{"title":"Efficient bandwidth allocation scheme for wireless networks using relay stations","authors":"J. Sheu, P. Sahoo, Pei Liu","doi":"10.1109/IWMN.2013.6663798","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663798","url":null,"abstract":"With the advance of wireless communications technologies, it has been proved that the usage of relay stations can improve the transmission rate and enlarge the coverage. The present usage of relay stations (RS) focus on retransmitting signal to the destination to ensure the correctness of signal. In this paper, we propose a novel relay transmission scheme and consider in using the bandwidth between the BS and RS for relaying the required data of User Equipments (UEs). In order to use the bandwidth resource efficiently, our proposed scheme considers the transmission time of the UEs under different requirement of data and assigns the bandwidth resource to reduce the overall transmission time. The simulation results show that our proposed scheme can reduce the overall transmission time noticeably compared to the method that does not assign the bandwidth resource.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"64 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114132190","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663788
G. Andria, G. Cavone, M. Savino, V. Scarano
The aim of this work is to present the new activities planned by the Electric and Electronic Measurements Research Group of Polytechnic of Bari, Department of Electric and Information Engineering, under the strategic project named “Magna Grecia - Rafforzamento Strutturale”, funded by the Italian Ministry of Education, University and Research within the National Operating Program Research and Competitiveness 2007-2013. The project aims to cooperate with many Apulia Regional Authorities to build a network for the monitoring of many pollution sources in the State of Taranto, which have already caused and continue to cause a heavy degradation of air, water, soil and electromagnetic spectrum.
这项工作的目的是展示由巴里理工学院电气和信息工程系电气和电子测量研究小组计划的新活动，该项目名为“Magna Grecia - Rafforzamento Strutturale”战略项目，由意大利教育、大学和研究部在2007-2013年国家运营计划研究和竞争力中资助。该项目旨在与许多普利亚地区当局合作，建立一个监测塔兰托州许多污染源的网络，这些污染源已经并将继续造成空气、水、土壤和电磁频谱的严重退化。
{"title":"A proposal for a flexible and scalable system for environmental measurement network","authors":"G. Andria, G. Cavone, M. Savino, V. Scarano","doi":"10.1109/IWMN.2013.6663788","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663788","url":null,"abstract":"The aim of this work is to present the new activities planned by the Electric and Electronic Measurements Research Group of Polytechnic of Bari, Department of Electric and Information Engineering, under the strategic project named “Magna Grecia - Rafforzamento Strutturale”, funded by the Italian Ministry of Education, University and Research within the National Operating Program Research and Competitiveness 2007-2013. The project aims to cooperate with many Apulia Regional Authorities to build a network for the monitoring of many pollution sources in the State of Taranto, which have already caused and continue to cause a heavy degradation of air, water, soil and electromagnetic spectrum.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121490893","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663771
D. Capriglione, Deborah Casinelli, Eleonora D'Orazio, L. Ferrigno
Protocol based time synchronization in wireless sensor networks is a relevant issue for many researchers. In literature many papers dealing with the design and characterization of several techniques for synchronization can be found. Some of them consider only performance analysis in simulation environment, others analyze the performance considering real sensor nodes equipped with specific features for the access to time information (i.e. timestamps) at media access control (MAC) layer.
{"title":"Time synchronization based on linear regression in low cost WSNs: A performance analysis","authors":"D. Capriglione, Deborah Casinelli, Eleonora D'Orazio, L. Ferrigno","doi":"10.1109/IWMN.2013.6663771","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663771","url":null,"abstract":"Protocol based time synchronization in wireless sensor networks is a relevant issue for many researchers. In literature many papers dealing with the design and characterization of several techniques for synchronization can be found. Some of them consider only performance analysis in simulation environment, others analyze the performance considering real sensor nodes equipped with specific features for the access to time information (i.e. timestamps) at media access control (MAC) layer.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116811977","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663767
P. Ferrari, G. Giorgi, C. Narduzzi, S. Rinaldi, M. Rizzi
In a wireless network, synchronization accuracy can be significantly affected by impairments affecting the physical layer. It is well known that path delay asymmetry adversely affects timing protocols based on two-way message exchanges but, unfortunately, bounds to link asymmetry are hard to ensure when timing messages are exchanged through wireless links. It would then be desirable to be able to flag the corresponding timestamps as unreliable. This paper discusses the application of a timestamp validation approach in the synchronization of the nodes in a wireless network employing physical-level timestamping in a IEEE 802.15.4 Chirp Spread Spectrum. Because a Kalman filter is employed as a servo for the local clock, differences between the timestamp received through the network and the predicted local time can be compared to statistical thresholds referred to the Kalman filter innovation process. Thus, a detector decision rule can be successfully based on well-defined statistical criteria, as shown by experimental data presented in the paper.
{"title":"Robust synchronization for IEEE 802.15.4 CSS wireless sensor networks","authors":"P. Ferrari, G. Giorgi, C. Narduzzi, S. Rinaldi, M. Rizzi","doi":"10.1109/IWMN.2013.6663767","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663767","url":null,"abstract":"In a wireless network, synchronization accuracy can be significantly affected by impairments affecting the physical layer. It is well known that path delay asymmetry adversely affects timing protocols based on two-way message exchanges but, unfortunately, bounds to link asymmetry are hard to ensure when timing messages are exchanged through wireless links. It would then be desirable to be able to flag the corresponding timestamps as unreliable. This paper discusses the application of a timestamp validation approach in the synchronization of the nodes in a wireless network employing physical-level timestamping in a IEEE 802.15.4 Chirp Spread Spectrum. Because a Kalman filter is employed as a servo for the local clock, differences between the timestamp received through the network and the predicted local time can be compared to statistical thresholds referred to the Kalman filter innovation process. Thus, a detector decision rule can be successfully based on well-defined statistical criteria, as shown by experimental data presented in the paper.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116995450","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663778
D. Darsena, G. Gelli, F. Verde
This paper deals with the synthesis of a time-domain equalizer, based on the constrained minimum mean-output energy (C-MMOE) criterion, for the uplink of a single-carrier interleaved frequency-division multiple-access (SC-IFDMA) wireless network. Over highly-dispersive channels, the length of the cyclic prefix (CP) may be insufficient to compensate for the interblock-interference (IBI). In addition, the in-phase/quadrature-phase (I/Q) imbalance, introduced at each transmitter, and the carrier frequency offsets (CFOs) between the transmitters and the receiver may cause severe performance degradation. The proposed receiver performs first blind C-MMOE channel shortening of all the user channels, without requiring a priori knowledge of the channel impulse responses to be shortened, or compensation of the CFOs and transmitter I/Q imbalances. Then, after channel shortening and CP removal, the C-MMOE criterion is also employed to compensate for the CFOs and mitigate I/Q impairments.Monte Carlo computer simulations are carried out to assess the effectiveness of the proposed receiver.
{"title":"Joint I/Q imbalances and CFOs compensation for multiuser wireless networks in the presence of IBI","authors":"D. Darsena, G. Gelli, F. Verde","doi":"10.1109/IWMN.2013.6663778","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663778","url":null,"abstract":"This paper deals with the synthesis of a time-domain equalizer, based on the constrained minimum mean-output energy (C-MMOE) criterion, for the uplink of a single-carrier interleaved frequency-division multiple-access (SC-IFDMA) wireless network. Over highly-dispersive channels, the length of the cyclic prefix (CP) may be insufficient to compensate for the interblock-interference (IBI). In addition, the in-phase/quadrature-phase (I/Q) imbalance, introduced at each transmitter, and the carrier frequency offsets (CFOs) between the transmitters and the receiver may cause severe performance degradation. The proposed receiver performs first blind C-MMOE channel shortening of all the user channels, without requiring a priori knowledge of the channel impulse responses to be shortened, or compensation of the CFOs and transmitter I/Q imbalances. Then, after channel shortening and CP removal, the C-MMOE criterion is also employed to compensate for the CFOs and mitigate I/Q impairments.Monte Carlo computer simulations are carried out to assess the effectiveness of the proposed receiver.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123732914","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 : 2013-11-14DOI: 10.1109/IWMN.2013.6663781
G. Andria, F. Attivissimo, G. Cavone, A. Nisio, M. Spadavecchia
In this paper a prototype of an energy monitoring device, based on an open source concept, is presented. The proposed architecture assures several advantages with respect to traditional energy meters, such as easy development of new applications making cost- and time-effective the migration to future smart grid infrastructures and simple adjustments to fulfill change in the relevant standards. The open-source philosophy has been adopted designing the software components in order to make all features easily customizable by the user.
{"title":"Toward a new smart metering paradigm for microgrid","authors":"G. Andria, F. Attivissimo, G. Cavone, A. Nisio, M. Spadavecchia","doi":"10.1109/IWMN.2013.6663781","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663781","url":null,"abstract":"In this paper a prototype of an energy monitoring device, based on an open source concept, is presented. The proposed architecture assures several advantages with respect to traditional energy meters, such as easy development of new applications making cost- and time-effective the migration to future smart grid infrastructures and simple adjustments to fulfill change in the relevant standards. The open-source philosophy has been adopted designing the software components in order to make all features easily customizable by the user.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123401907","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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