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WiBus: A Wi-Fi based monitoring system for public transportation with dynamic route tracking WiBus:一种基于Wi-Fi的公共交通监控系统，具有动态路线跟踪功能
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020843
V. B. C. D. Silva, Tatiana Sciammarella, M. Campista, L. Costa
{"title":"WiBus: A Wi-Fi based monitoring system for public transportation with dynamic route tracking","authors":"V. B. C. D. Silva, Tatiana Sciammarella, M. Campista, L. Costa","doi":"10.1109/WD.2014.7020843","DOIUrl":"https://doi.org/10.1109/WD.2014.7020843","url":null,"abstract":"A great challenge of today's metropolises is the constant traffic jams, which are a consequence of excessive use of private vehicles. More people would adopt public transportation, e.g. buses, if the time of arrival (ToA) for the next vehicle to each bus stop could be predicted. In this direction, we propose WiBus, which is a system to estimate the buses ToA, based on information from opportunistic IEEE 802.11 contacts. Unlike previous systems, WiBus explicitly takes into account bus route changes, adjusting the routes with an algorithm for dynamic route creation and maintenance. The system is implemented and analyzed via emulation of a real scenario. Experimental results show that WiBus has accumulated error of at most a few minutes.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123000750","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
Unidirectional Link-Aware DTN-based sensor network in building monitoring scenario 楼宇监控场景中基于单向链路感知dtn的传感器网络
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020828
Manussanun Buranachokphaisan, H. Ochiai, H. Esaki
{"title":"Unidirectional Link-Aware DTN-based sensor network in building monitoring scenario","authors":"Manussanun Buranachokphaisan, H. Ochiai, H. Esaki","doi":"10.1109/WD.2014.7020828","DOIUrl":"https://doi.org/10.1109/WD.2014.7020828","url":null,"abstract":"The performance of wireless sensor network in building monitoring system (BMS) is often deteriorated by intermittently-connected and unidirectional links occurring in building environment. With DTN-based approach, Potential-based Entropy Adaptive Routing (PEAR) protocol can achieve high reliability and scalability over intermittently-connected mesh network in the building scenario. However, the result of high delivery latency caused by ignoring the presence of unidirectional links may not be acceptable in BMS. In this paper, we propose Unidirectional Link-Aware Next-hop Selection (ULANS), the technique of detecting unidirectional links and the new next-hop selection scheme for PEAR. The real-world experimental result shows that ULANS can avoid choosing unidirectional links as the next-hop and improve delivery latency of PEAR.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127868222","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
Contact lifespan and interest-based content dissemination in vehicular networks 车载网络中接触寿命和基于兴趣的内容传播
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020818
Farouk Mezghani, R. Dhaou, M. N. Lima, A. Beylot
{"title":"Contact lifespan and interest-based content dissemination in vehicular networks","authors":"Farouk Mezghani, R. Dhaou, M. N. Lima, A. Beylot","doi":"10.1109/WD.2014.7020818","DOIUrl":"https://doi.org/10.1109/WD.2014.7020818","url":null,"abstract":"The popularity of vehicular applications, enhancing road traffic and user comfort, has instigated commuters to use short-range connectivity, e.g. WiFi, to opportunistically share content based on their interests. Recent works have proposed content dissemination protocols aiming mainly to optimize throughput and fan-out delay, without considering content utility. This paper presents I-PICK, a cross-layer content dissemination protocol, aware simultaneously of heterogeneous user interests (application layer) and node connectivity lifespan (link layer) on vehicular networks. In order to maximize content utility, the protocol improves data propagation on the link layer taking as reference the duration of the nodes contact and user interests as decision criteria to the forward scheduling mechanism. Results from trace-driven and synthetic simulations show that I-PICK outperforms relevant protocols in the literature.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121236237","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
PRAVDA: Pseudo random network coding in vanet for data download PRAVDA:在vanet中进行数据下载的伪随机网络编码
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020833
D. Astudillo, E. Chaput, A. Beylot
{"title":"PRAVDA: Pseudo random network coding in vanet for data download","authors":"D. Astudillo, E. Chaput, A. Beylot","doi":"10.1109/WD.2014.7020833","DOIUrl":"https://doi.org/10.1109/WD.2014.7020833","url":null,"abstract":"This paper introduces PRAVDA, a new approach for infrastructure based content distribution in a vehicular network. PRAVDA is built on broadcasting and pseudo random network coding. Its first strength is that, being broadcast based, it does not need any feedback channel and thus consumes very little throughput. Data is transmitted through network coding: multiple linear combinations of data are sent. A vehicle needs to receive a defined number of independent linear combinations to decode the data. The server will send a larger number of different linear combinations. The unreliability of broadcast is thus fought through a useful redundancy rather than through re-transmission. Finally, computation of the linear combination coefficients is done so that the overhead is the same as it would be without network coding.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123746804","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
Improving real-time video streaming delivery over dense multi-hop wireless ad hoc networks 在密集多跳无线自组织网络上改进实时视频流传输
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020832
Patrick Sondi, Dhavy Gantsou
{"title":"Improving real-time video streaming delivery over dense multi-hop wireless ad hoc networks","authors":"Patrick Sondi, Dhavy Gantsou","doi":"10.1109/WD.2014.7020832","DOIUrl":"https://doi.org/10.1109/WD.2014.7020832","url":null,"abstract":"The growing popularity of mobile devices equipped with wireless interface makes Mobile Ad-hoc Networks (MANET) become an interesting architecture for rapid deployment of related applications without relying on any infrastructure. When the MANET is dense, and the source is located more than one hop away from the destination, providing delivery ratios that meet real-time video streaming constraints is still an open issue. One problem is that video traffic flow tends to be continuous, thus creating interferences on its own route that impede the retransmissions by the forwarding nodes and cause loss of packets. We propose a strategy which consists in delaying periodically the transmissions at the source, thus allowing the forwarding nodes to retransmit to destination. The evaluations show that, in most cases, this strategy leads to improvements of more than 30% in the delivery of video packets between communicating pairs located two or three hops away, without exceeding the video streaming end-to-end delay constraint.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128070329","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
VANETs signal quality-based route selection in smart cities 智慧城市中基于VANETs信号质量的路径选择
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020812
M. Vondra, S. Djahel, John Murphy
{"title":"VANETs signal quality-based route selection in smart cities","authors":"M. Vondra, S. Djahel, John Murphy","doi":"10.1109/WD.2014.7020812","DOIUrl":"https://doi.org/10.1109/WD.2014.7020812","url":null,"abstract":"In road networks, the most common metrics to determine the optimal route relaying two points are either the path length or the travel time. However, as autonomous smart cars are expected to emerge in future smart cities and lead to an unprecedented growth of mobile applications spectrum for both drivers and passengers, we argue that other metrics can be also considered for route selection. Therefore, the best route for a driver will be also determined by specific in-vehicle users' requirements such as, ensuring sufficient quality for wireless connection with minimum cost, and selecting preferred access networks, etc. To this end, we propose an original algorithm that enables route selection based on maximum expected signal quality with respect to the drivers' maximum tolerated prolongation of journey. Our ultimate objective is to select the route that ensures sufficient signal quality for users on board by maximizing the usage of VANETs resources, through RSUs, while minimizing the usage of the costly LTE-A resources. The obtained simulation results, under several scenarios, have proven the high efficiency of the proposed algorithm.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127349214","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: 8
A statistical learning reputation system for opportunistic networks 机会主义网络的统计学习信誉系统
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020822
Diogo Soares, Edjair Mota, C. Souza, P. Manzoni, Juan-Carlos Cano, C. Calafate
{"title":"A statistical learning reputation system for opportunistic networks","authors":"Diogo Soares, Edjair Mota, C. Souza, P. Manzoni, Juan-Carlos Cano, C. Calafate","doi":"10.1109/WD.2014.7020822","DOIUrl":"https://doi.org/10.1109/WD.2014.7020822","url":null,"abstract":"Contacts are essential to guarantee the performance of opportunistic networks, but due to resource constraints, some nodes may not cooperate. In reputation systems, the perception of an agent depends on past observations to classify its actual behavior. Few studies have investigated the effectiveness of robust learning models for classifying selfish nodes in opportunistic networks. In this paper, we propose a distributed reputation algorithm based on the game theory to achieve reliable information dissemination in opportunistic networks. A contact is modeled as a game, and the nodes can cooperate or not. By using statistical inference methods, we derive the reputation of a node based on learning from past observations. We applied the proposed algorithm to a set of traces to obtain a distributed forecasting base for future action when selfish nodes are involved in the communication. We evaluate the conditions in which the accuracy of data collection becomes reliable.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130809456","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: 7
Data Aggregation for group communication in Machine-to-Machine environments 机器对机器环境中分组通信的数据聚合
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020792
Andre Riker, E. Cerqueira, M. Curado, E. Monteiro
{"title":"Data Aggregation for group communication in Machine-to-Machine environments","authors":"Andre Riker, E. Cerqueira, M. Curado, E. Monteiro","doi":"10.1109/WD.2014.7020792","DOIUrl":"https://doi.org/10.1109/WD.2014.7020792","url":null,"abstract":"The energy resources of Machine-to-Machine (M2M) devices need to last as much as possible. Data aggregation is a suitable solution to prolong the network lifetime, since it allows the devices to reduce the amount of data traffic. In M2M systems, the M2M platform and the Constrained Application Protocol (CoAP) enable multiple entities to send concurrent data-requests to the same capillary network. For example, in a Smart Metering scenario, there are devices measuring the electricity consumption of an entire building. The supplier company requests all devices to send the data updates every 1800 seconds (i.e., 30 minutes). On the other hand, a resident requests his/her devices to communicate every 600 seconds (i.e., 10 minutes). These concurrent data-requests create heterogeneous groups over the same capillary network, since each group might be able to execute different in-network functions and to have a unique temporal-frequency of communication. However, the traditional data aggregation solutions designed for periodic monitoring assume the execution of a single static data-request during all network lifetime. This makes the traditional data aggregation solutions not suitable for M2M environments. To fill this gap, this paper presents Data Aggregation for Multiple Groups (DAMiG), which is designed to provide Data Aggregation for heterogeneous and concurrent sets of CoAP data-requests. DAMiG explores the group communication periodicity to perform internal and external-group traffic aggregation. To achieve that, DAMiG computes a suitable aggregation structure and applies statistical and merger aggregation functions along the path. DAMiG is able to reduce the energy consumption in scenarios with single or several concurrent CoAP data-requests. Moreover, the selection of internal and external-group paths takes into account the residual energy of the nodes, avoiding the paths with low residual energy.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"25 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115997832","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: 6
Context-aware adaptation mechanism for video dissemination over Flying Ad-Hoc Networks 飞行Ad-Hoc网络视频传播的上下文感知自适应机制
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020852
Larissa Pimentel, D. Rosário, E. Cerqueira, T. Braun, A. Abelém, M. Gerla
{"title":"Context-aware adaptation mechanism for video dissemination over Flying Ad-Hoc Networks","authors":"Larissa Pimentel, D. Rosário, E. Cerqueira, T. Braun, A. Abelém, M. Gerla","doi":"10.1109/WD.2014.7020852","DOIUrl":"https://doi.org/10.1109/WD.2014.7020852","url":null,"abstract":"The user experience on watching live video sequences transmitted over a Flying Ad-Hoc Networks (FANETs) must be considered to drop packets in overloaded queues, in scenarios with high buffer overflow and packet loss rate. In this paper, we introduce a context-aware adaptation mechanism to manage overloaded buffers. More specifically, we propose a utility function to compute the dropping probability of each packet in overloaded queues based on video context information, such as frame importance, packet deadline, and sensing relevance. In this way, the proposed mechanism drops the packet that adds the minimum video distortion. Simulation evaluation shows that the proposed adaptation mechanism provides real-time multimedia dissemination with QoE support in a multi-hop, multi-flow, and mobile network environments.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114548119","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
YouTube in the move: Understanding the performance of YouTube in cellular networks YouTube在移动中:了解YouTube在蜂窝网络中的性能
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020798
P. Casas, P. Fiadino, A. Sackl, A. D'Alconzo
{"title":"YouTube in the move: Understanding the performance of YouTube in cellular networks","authors":"P. Casas, P. Fiadino, A. Sackl, A. D'Alconzo","doi":"10.1109/WD.2014.7020798","DOIUrl":"https://doi.org/10.1109/WD.2014.7020798","url":null,"abstract":"YouTube is the most popular and volume-dominant service in today's Internet, and is changing the way ISPs manage their networks. Understanding the performance of YouTube traffic is paramount for ISPs, specially for mobile operators, who must handle the huge surge of traffic with the constraints and challenges of cellular networks. In this paper we present an empirical analysis of the performance of YouTube flows accessed through a national-wide cellular network, considering download throughput as well as end-user Quality of Experience (QoE) metrics. The analysis considers the characteristics and impacts of the Content Delivery Network hosting YouTube, and compares its behavior with other popular HTTP video streaming services accessed through cellular networks. The QoE analysis is performed through end-user device measurements, which directly reflect the experience of the end-users. Our study additionally shows the potentiality of monitoring YouTube performance in cellular networks directly from the smart-phones of the users, bypassing the traffic visibility loss at the core of the network introduced by traffic encryption (e.g., HTTPS).","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130801004","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: 15
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