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International Workshop on Mobile Opportunistic Networks最新文献

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Distributed spectrum sensing and channel selection in opportunistic wireless personal area networks 机会无线个人区域网络中的分布式频谱感知和信道选择
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755781
Hussein Khaleel, F. Penna, C. Pastrone, R. Tomasi, M. Spirito
{"title":"Distributed spectrum sensing and channel selection in opportunistic wireless personal area networks","authors":"Hussein Khaleel, F. Penna, C. Pastrone, R. Tomasi, M. Spirito","doi":"10.1145/1755743.1755781","DOIUrl":"https://doi.org/10.1145/1755743.1755781","url":null,"abstract":"This demonstrator showcases a distributed spectrum sensing and channel selection service running on a small-scale IEEE 802.15.4 opportunistic WPAN network. This service can provide spectrum awareness to the network itself or to other co-located networks. In case an interfering signal is detected the network devices are able to identify less used spectrum portions such that the network can reallocate to the best available channel. The channel occupancy can be observed in real-time via a graphical user interface.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131694693","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}
引用次数: 9
Opportunistically supported ubiquitous localization 机会主义地支持无处不在的本地化
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755793
Michela Papandrea
{"title":"Opportunistically supported ubiquitous localization","authors":"Michela Papandrea","doi":"10.1145/1755743.1755793","DOIUrl":"https://doi.org/10.1145/1755743.1755793","url":null,"abstract":"A lot of work has already been done on the area of localization of mobile nodes, but there still exist numerous open issues. The constant progress in technology gives the opportunity to obtain efficient, in terms of cost and accuracy, localization services, and likewise it increases the number of challenges to be considered. The main problems related to the localization of mobile devices concern with the heterogeneity of visited environments and of interested hardware platforms, the energy and computational constraints imposed by the devices and the choice of appropriate tracking technologies. The most important goal in the localization research area is to provide a very accurate positioning service, regardless the surrounding environment. The purpose of this document is to briefly describe the state of the art in localization, and to outline my planned PhD research.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132195714","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}
引用次数: 0
Virtual data mules for data collection in road-side sensor networks 用于路边传感器网络数据采集的虚拟数据骡子
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755750
Diego Borsetti, C. Casetti, C. Chiasserini, M. Fiore, J. Barceló-Ordinas
{"title":"Virtual data mules for data collection in road-side sensor networks","authors":"Diego Borsetti, C. Casetti, C. Chiasserini, M. Fiore, J. Barceló-Ordinas","doi":"10.1145/1755743.1755750","DOIUrl":"https://doi.org/10.1145/1755743.1755750","url":null,"abstract":"It has been proven that the use of mobile nodes as data mules in wireless sensor networks can improve the information collection process, increase the sensors' lifetime, and reduce the probability that sensors experience buffer overflow. To that end, data mules are typically required to follow precise trajectories. However, controlling the movement of mobile nodes is not always possible. In this paper, we introduce the concept of virtual data mule (VDM), which, by leveraging opportunistic cooperation between mobile nodes, abstracts the data collection function from specific physical mules. We apply the VDM concept to the case of data retrieval from road-side sensors through vehicular nodes. We propose two VDM algorithms targeting such a scenario and, by means of simulation in realistic mobility settings, we show that VDMs can fulfill data collection requirements that are simply unfeasible when traditional data mules are employed.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126904811","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}
引用次数: 18
Impact of source counter on DTN routing control under resource constraints 资源约束下源计数器对DTN路由控制的影响
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755751
X. Zhang, Honggang Zhang, Yu Gu
{"title":"Impact of source counter on DTN routing control under resource constraints","authors":"X. Zhang, Honggang Zhang, Yu Gu","doi":"10.1145/1755743.1755751","DOIUrl":"https://doi.org/10.1145/1755743.1755751","url":null,"abstract":"We study routing schemes for resource constrained Disruption Tolerant Networks (DTNs) where transmission bandwidth is scarce resource. In such a setting, a key issue is how to schedule the transmission of packets under limited bandwidth to optimize performance. Such a scheduling consists of source control (i.e., source nodes choosing a routing scheme) and the local buffer management scheme adopted by each node. Existing works typically focus on transmission buffer management, but due to theoretical and practical difficulties, only heuristics have been proposed. In this work, we explore alternative ways to improve DTN routing performance via source control. We focus on spray-and-wait counter-based routing scheme. We first show that there exists an optimal counter value to achieve minimum average network-wide packet delivery delay. Then as a first step towards understanding multi-hop multicopy DTN routing schemes, we model a two-hop multi-copy DTN routing via a continuous time Markov Chain. Our modeling analysis provides insights into the impact of counter on routing performance and further suggests the existence of optimal counter value. In this process, we derive the capacity region of DTN routing (i.e., the maximum sustainable per-node throughput), and provide an accurate analysis of the average packet delivery delay of the two-hop single copy relaying scheme. Relying on the insights gained via simulations and modeling, we propose an adaptive scheme that allow nodes to adjust their counter values to achieve minimum packet delivery delay, in a distributed and asynchronous fashion. Simulations demonstrate the effectiveness of our scheme and suggest the potential of exploring this rich area for improving DTN routing performance.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116491963","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}
引用次数: 10
Geostatistics-inspired sparsity-aware cooperative spectrum sensing for cognitive radio networks 认知无线电网络中地理统计启发的稀疏感知协同频谱感知
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755789
E. Dall’Anese
{"title":"Geostatistics-inspired sparsity-aware cooperative spectrum sensing for cognitive radio networks","authors":"E. Dall’Anese","doi":"10.1145/1755743.1755789","DOIUrl":"https://doi.org/10.1145/1755743.1755789","url":null,"abstract":"A cognitive radio (CR) sensing problem is considered, where a number of CRs collaboratively detect the activity of an incumbent primary system. The proposed sensing framework is based on the novel concept of channel gain map, a geostatistics-inspired tool that allows to capture the spatiotemporal evolution of the propagation environment. The channel gain maps are updated by opportunistically reuse the primary channel idle periods. Also, the RF-power map, generated by the active sources, is tracked for spectrum spatial re-use and CR transmit power calibration purposes.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132643003","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}
引用次数: 4
Modeling opportunistic application spreading 机会应用扩展建模
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755791
Ádám Horváth
{"title":"Modeling opportunistic application spreading","authors":"Ádám Horváth","doi":"10.1145/1755743.1755791","DOIUrl":"https://doi.org/10.1145/1755743.1755791","url":null,"abstract":"Investigating information spreading via opportunistic connections between mobile devices is a popular research topic today. However, studying the characteristics of application spreading via such a way has not got too much attention so far. In this extended abstract, we propose the use of Closed Queuing Networks to model application spreading which tries to capture not only the opportunistic connection possibilities but also the users' behavior. In the future, we want to examine how to set the parameters of our model, and run simulations to evaluate it.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133554186","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}
引用次数: 1
On the degree distribution of opportunistic networks 论机会主义网络的度分布
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755771
S. Ferretti
{"title":"On the degree distribution of opportunistic networks","authors":"S. Ferretti","doi":"10.1145/1755743.1755771","DOIUrl":"https://doi.org/10.1145/1755743.1755771","url":null,"abstract":"This paper presents an analytical approach to model opportunistic networks, with mobile devices that may concurrently employ multiple networks. By modeling these systems as complex networks, it is possible to obtain information on the degree probability distribution of nodes. Such a metric provides insights on the connectivity of the opportunistic network. The analytical tool is assessed via simulation.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123673173","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}
引用次数: 5
ZebraNet and its theoretical analysis on distribution functions of data gathering times ZebraNet及其数据采集时间分布函数的理论分析
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755790
A. Fujihara
{"title":"ZebraNet and its theoretical analysis on distribution functions of data gathering times","authors":"A. Fujihara","doi":"10.1145/1755743.1755790","DOIUrl":"https://doi.org/10.1145/1755743.1755790","url":null,"abstract":"We theoretically investigated a general property of data gathering times in a wireless communication system with randomly moving sensors which share data only with nearby ones. We proposed a stochastic model of the system to analyse distribution functions of data gathering times. We found that the time distribution asymptotically obeys a power-law decay in infinite space, while it becomes exponential in finite space. Mean and variance of the time distributions become finite as the number of sensors is sufficiently large, meaning efficient data gathering can be accomplished by deploying a large number of sensors when sensors are spreading data epidemically. In the finite space, moreover, both power-law and exponential distributions coexist in general. We proposed a truncated power-law distribution for a least-square fitting of the time distribution on the whole range to estimate their accurate mean and variance.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116054352","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}
引用次数: 2
Experimental localization application in opportunistic scenario 机会情境下的实验定位应用
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755784
F. Zorzi, A. Bardella, T. Pérennou, GuoDong Kang, A. Zanella
{"title":"Experimental localization application in opportunistic scenario","authors":"F. Zorzi, A. Bardella, T. Pérennou, GuoDong Kang, A. Zanella","doi":"10.1145/1755743.1755784","DOIUrl":"https://doi.org/10.1145/1755743.1755784","url":null,"abstract":"Opportunistic localization is a new approach to the self-localization problem that is recognized as one of the most critical for mobile users, in particular in indoor environments. The basic idea consists in allowing mobile users to exchange location information when they happen to be in radio range and to exploit this information in order to improve the self-localization accuracy of mobile users. This demo is aimed at proving the effectiveness of the opportunistic approach and identifying possible drawbacks and technical issues. To this end, we will realize a simple though realistic network deployment, where a mobile user, which performs a very basic min-max self localization procedure, tries to improve the accuracy of its location by communicating on an opportunistic basis with other nodes in spatial proximity. The demo will allow us to appreciate the actual benefit that the opportunistic paradigm brings to the self-localiztion problem and to compare the performance of different opportunistic localization algorithms.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125339714","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}
引用次数: 1
Opportunistic scheduling of a message ferry in sensor networks 传感器网络中信息轮渡的机会调度
International Workshop on Mobile Opportunistic Networks Pub Date : 2010-02-22 DOI: 10.1145/1755743.1755774
V. Kavitha, E. Altman
{"title":"Opportunistic scheduling of a message ferry in sensor networks","authors":"V. Kavitha, E. Altman","doi":"10.1145/1755743.1755774","DOIUrl":"https://doi.org/10.1145/1755743.1755774","url":null,"abstract":"We study the concept of Ferry based Wireless Local Area Network (FWLAN), in which a number of isolated nodes are scattered over some area and where communication between a node and the outer world, or communication between the nodes, are made possible via a message ferry. The Ferry travels in a predetermined cyclic path and collects/delivers messages from/to a node when it stops in the vicinity of the node. The radio conditions may change between successive visits of a station. We consider an opportunistic service in which the shuttle serves a node only if its radio conditions are good. Our analytical results are based on the theory of polling systems with rerouting.","PeriodicalId":198518,"journal":{"name":"International Workshop on Mobile Opportunistic Networks","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121356635","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}
引用次数: 3
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