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Proceedings of the 13th ACM International Symposium on Mobility Management and Wireless Access最新文献

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VARSA: An Efficient VAriable Radius Sensor Activation Scheme for Target Tracking using Wireless Sensor Networks 基于无线传感器网络的目标跟踪的有效变半径传感器激活方案
Adel Mohammad Shafiei, A. Darehshoorzadeh, A. Boukerche
Energy efficiency advancement is vital in target tracking Wireless Sensor Networks (WSNs) due to resource constraints of tiny detectors. On the other side, Tracking quality must also be assured while minimizing energy consumption. The main aim of target tracking algorithms is to depict the trajectory of the target at a sink node using the aggregated data from all sensor nodes. Monitoring an Area of Interest (AoI) while other sensors are in sleep mode has been shown to effectively improve energy efficiency in WSNs. In this paper, we propose a VAriable Radius Sensor Activation (VARSA) algorithm to decrease the sensing energy consumption of tracking applications using WSNs. VARSA uses a dynamic sensing radius adjustment and sends the appropriate sensing radius to the next predicted sensor to wake up with. In addition to sending sensors into sleep mode when they are not in the AoI, we propose to decrease the sensing radius of the sensors in the AoI in real time to further decrease the consumed energy of sensing. Simulation results demonstrate that the proposed algorithm significantly decreases the sensing energy consumption, while providing better tracking quality over time.
由于微型探测器的资源限制,在目标跟踪无线传感器网络(WSNs)中,提高能效至关重要。另一方面,跟踪质量也必须保证,同时尽量减少能源消耗。目标跟踪算法的主要目的是利用所有传感器节点的聚合数据来描述目标在汇聚节点的轨迹。当其他传感器处于睡眠模式时监测感兴趣区域(AoI)已被证明可以有效提高wsn的能量效率。在本文中,我们提出了一种可变半径传感器激活(VARSA)算法,以减少使用WSNs跟踪应用的传感能量消耗。VARSA使用动态感知半径调整,并将适当的感知半径发送到下一个预测的传感器以唤醒。除了在传感器不在AoI时将其发送到睡眠模式外,我们还建议实时减小AoI中传感器的感知半径,以进一步降低感知消耗的能量。仿真结果表明,该算法显著降低了传感能量消耗,同时随着时间的推移提供了更好的跟踪质量。
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引用次数: 1
Towards a Decision Approach for Autonomic Systems Adaptation 自主系统自适应决策方法研究
I. Abdennadher, I. Rodriguez, M. Jmaiel, Mariano Vargas-Santiago, S. Hernández
The autonomic computing paradigm arises to tackle the complexity of today's dynamic heterogeneous and ubiquitous systems. The architecture of autonomic systems based on the MAPE-K loop dynamically adapts itself when the context changes. However, decisions within phases of the MAPE-K loop must be taken and therefore fit a suitable architecture. Ongoing researches take decisions upon context changes of the system and are a well studied topic in different fields, however, most of them use predefined decisions which do not cover all the contextual changes or decisions which support only a very specific type of application. In this work we propose an approach dealing with the decisions that must be taken within MAPE-K loop for system adaptation, in the context of autonomic computing. An exceptional architectural configuration of systems relies on consistent decisions taken by the analysis, planning and execution phases of the aforementioned loop. Autonomic systems undergo dynamic environment changes and therefore decisions lead the architectural configuration of the system to success or failure.
自主计算范式的出现是为了解决当今动态异构和无处不在的系统的复杂性。当环境发生变化时,基于MAPE-K循环的自主系统体系结构可以动态地自适应。但是,必须在MAPE-K循环的各个阶段内做出决策,因此必须适合合适的体系结构。正在进行的研究根据系统的上下文变化做出决策,并且在不同领域得到了很好的研究,然而,大多数研究使用的是预定义的决策,这些决策不能涵盖所有的上下文变化或仅支持非常特定类型的应用程序的决策。在这项工作中,我们提出了一种在自主计算的背景下处理MAPE-K循环中必须采取的系统适应决策的方法。系统的特殊架构配置依赖于上述循环的分析、计划和执行阶段所采取的一致决策。自治系统经历动态环境变化,因此决策会导致系统的架构配置走向成功或失败。
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引用次数: 1
All your Root Checks are Belong to Us: The Sad State of Root Detection 你所有的根检查都属于我们:根检测的悲哀状态
Nathan S. Evans, Azzedine Benameur, Yun Shen
In our research, most of our analysis was based on statically reverse engineering the applications. However we wanted to combine this with dynamic analysis to make sure our findings were correct and observable at runtime. For this, we initially created "AndroPoser". AndroPoser is a library we inject into Android processes leveraging a feature of the dynamic linker that allows us to transparently modify the runtime behavior of selected functions using LD_PRELOAD. This dynamic library interposition allowed us to hook functions and modify the data they manipulate and/or their return code. We realized that this could be used not only as a support tool for our analysis, but also to subdue any native code that checks for evidence of root access.
在我们的研究中,我们的大多数分析都是基于静态的应用程序逆向工程。然而,我们希望将其与动态分析相结合,以确保我们的发现在运行时是正确的和可观察的。为此,我们最初创建了“AndroPoser”。AndroPoser是我们注入Android进程的一个库,它利用了动态链接器的一个特性,允许我们使用LD_PRELOAD透明地修改所选函数的运行时行为。这种动态库的插入允许我们钩住函数并修改它们操作的数据和/或它们的返回代码。我们意识到,这不仅可以用作我们分析的支持工具,还可以用来抑制检查根访问证据的任何本机代码。
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引用次数: 14
Studying the Effect of Human Mobility on MANET Topology and Routing: Friend or Foe? 研究人类移动性对MANET拓扑和路由的影响:是敌是友?
Adán G. Medrano-Chávez, Elizabeth Pérez Cortés, M. López-Guerrero
The better we understand human mobility the more capable we are to perform realistic simulations of human driven MANETs. By using this knowledge we can more accurately predict the performance that can be expected from real MANET implementations. In this paper we assess how recently discovered characteristics of human mobility affect network connectivity and routing performance. Our main results indicate that human-driven MANETs exhibit higher connectivity levels and longer route duration lifetimes than what was previously predicted with random waypoint simulations. These results encourage the development and implementation of MANET-based services, which so far have been regarded as very difficult or impossible to provide.
我们越了解人类的移动性,我们就越有能力对人类驱动的manet进行逼真的模拟。通过使用这些知识,我们可以更准确地预测实际MANET实现的预期性能。在本文中,我们评估了最近发现的人类移动性特征如何影响网络连接和路由性能。我们的主要结果表明,与之前用随机航路点模拟预测的结果相比,人为驱动的manet表现出更高的连接水平和更长的路由持续寿命。这些结果鼓励开发和实施基于移动网络的服务,这些服务迄今被认为是非常困难或不可能提供的。
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引用次数: 1
Smart mm-Wave Beam Steering Algorithm for Fast Link Re-Establishment under Node Mobility in 60 GHz Indoor WLANs 节点移动条件下60ghz室内无线局域网快速链路重建的智能毫米波波束导向算法
Avishek Patra, L. Simić, P. Mähönen
Millimeter-wave (mm-wave) wireless local area networks (WLANs) are expected to provide multi-Gbps connectivity by exploiting the large amount of unoccupied spectrum in e.g. the unlicensed 60 GHz band. However, to overcome the high path loss inherent at these high frequencies, mm-wave networks must employ highly directional beamforming antennas, which makes link establishment and maintenance much more challenging than in traditional omnidirectional networks. In particular, maintaining connectivity under node mobility necessitates frequent re-steering of the transmit and receive antenna beams to re-establish a directional mm-wave link. A simple exhaustive sequential scanning to search for new feasible antenna sector pairs may introduce excessive delay, potentially disrupting communication and lowering the QoS. In this paper, we propose a smart beam steering algorithm for fast 60 GHz link re-establishment under node mobility, which uses knowledge of previous feasible sector pairs to narrow the sector search space, thereby reducing the associated latency overhead. We evaluate the performance of our algorithm in several representative indoor scenarios, based on detailed simulations of signal propagation in a 60 GHz WLAN in WinProp with realistic building materials. We study the effect of indoor layout, antenna sector beamwidth, node mobility pattern, and device orientation awareness. Our results show that the smart beam steering algorithm achieves a 7-fold reduction of the sector search space on average, which directly translates into lower 60 GHz link re-establishment latency. Our results also show that our fast search algorithm selects the near-optimal antenna sector pair for link re-establishment.
毫米波(mm-wave)无线局域网络(wlan)预计将利用大量未占用的频谱,例如未经许可的60千兆赫频带,提供多gbps的连接。然而,为了克服这些高频固有的高路径损耗,毫米波网络必须采用高度定向的波束形成天线,这使得链路的建立和维护比传统的全向网络更具挑战性。特别是,在节点移动的情况下保持连通性需要频繁地重新转向发射和接收天线波束,以重新建立定向毫米波链路。一个简单的穷举顺序扫描来搜索新的可行的天线扇区对可能会引入过多的延迟,潜在地破坏通信并降低QoS。在本文中,我们提出了一种在节点移动情况下快速建立60 GHz链路的智能波束引导算法,该算法利用之前可行的扇区对的知识来缩小扇区搜索空间,从而降低相关的延迟开销。我们在几个代表性的室内场景中评估了我们的算法的性能,基于WinProp中60 GHz WLAN信号传播的详细模拟和真实的建筑材料。我们研究了室内布局、天线扇区波束宽度、节点移动模式和设备方向感知的影响。我们的研究结果表明,智能波束引导算法平均实现了7倍的扇区搜索空间减少,这直接转化为更低的60 GHz链路重建延迟。我们的结果也表明,我们的快速搜索算法选择了接近最优的天线扇区对进行链路重建。
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引用次数: 32
Efficient Parameterized Methods for Physical Activity Detection using only Smartphone Sensors 仅使用智能手机传感器的高效参数化身体活动检测方法
G. Filios, S. Nikoletseas, C. Pavlopoulou
Detecting daily physical activities is very important in applications such as developing automated comfort scenarios for an individual. Motion smartphone sensors were previously used only as a complementary input whereas now, they are increasingly used as the primary data source for motion recognition. In this work, we use smartphone accelerometers to recognize online four daily human activities: sitting, walking, lying and running. We design two new hybrid protocols combining state of the art methods in a parameterized way. Then, we implement those protocols in the context of Android applications, which we develop. The first composition is more accurate and the second one is more energy efficient in terms of battery usage. Finally, we manage to personalize the model for online training of data sensors, which we create initially, to better adapt to the particular individual. According to our experimental performance evaluation, our hybrid methods achieve very high accuracy (even 99%), while keeping battery dissipation at very satisfactory levels (average battery consumption 874mW).
在为个人开发自动化舒适场景等应用中,检测日常身体活动非常重要。运动智能手机传感器以前只用作辅助输入,而现在,它们越来越多地用作运动识别的主要数据源。在这项工作中,我们使用智能手机加速度计来识别在线的四种日常人类活动:坐、走、躺和跑。我们设计了两个新的混合协议,以参数化的方式结合了最先进的方法。然后,在我们开发的Android应用中实现这些协议。第一种成分更精确,第二种成分在电池使用方面更节能。最后,我们设法使我们最初创建的数据传感器在线培训模型个性化,以更好地适应特定的个体。根据我们的实验性能评估,我们的混合方法实现了非常高的精度(甚至99%),同时将电池耗散保持在非常令人满意的水平(平均电池消耗874mW)。
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引用次数: 5
An Efficient Cloud-Based Iris Recognition Solution for Mobile Devices 一个高效的基于云的移动设备虹膜识别解决方案
F. Santos, F. Faria, A. Boukerche, L. Villas
The use of biological properties for individual identification, called biometric systems, on mobile devices is the easier and safer approach to deal with user personal information. Several works have been sought to develop robust solutions for different biometric modalities, such as, face, fingerprint, palmprint, voice, and iris recognition. In this work, we evaluate three well-know local binary descriptors -- BRIEF, ORB and BRISK -- for iris recognition task. We show that the iris recognition is a computationally heavy task to run locally on mobile devices. Then we propose to perform iris recognition on a cloud infrastructure, which has recently emerged as a new paradigm for hosting and delivering services over the Internet. Moreover, the information processing could be completed much faster. In our experiments, we assessed the effectiveness, time-consuming, and memory usage metrics. Simulation results show that cloud-based iris recognition using WiFi or LTE communication reduces the average time at least 50% in comparison with time obtained to perform the iris recognition locally.
在移动设备上使用生物特性进行个人识别,称为生物识别系统,是处理用户个人信息的更简单、更安全的方法。一些工作已经寻求为不同的生物识别模式开发强大的解决方案,如面部、指纹、掌纹、声音和虹膜识别。在这项工作中,我们评估了三个众所周知的局部二进制描述符——BRIEF, ORB和BRISK——用于虹膜识别任务。我们表明,虹膜识别是一项计算繁重的任务,在本地移动设备上运行。然后,我们建议在云基础设施上执行虹膜识别,云基础设施最近作为在互联网上托管和交付服务的新范例出现。此外,信息处理可以更快地完成。在我们的实验中,我们评估了有效性、耗时和内存使用指标。仿真结果表明,使用WiFi或LTE通信的云虹膜识别与本地虹膜识别相比,平均时间至少减少了50%。
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引用次数: 1
Methodology to Events Identification in Vehicles Using Statistical Process Control on Steering Wheel Data 基于方向盘数据统计过程控制的车辆事件识别方法
Arthur N. Assuncao, Fabio O. de Paula, R. Oliveira
Driving a vehicle has become a challenging task, especially because up to 90% of accidents involving vehicles are caused by drivers' errors. In this paper, we propose a method for events identification with the use of an SPC (Statistical Process Control) technique, known as EWMA (Exponentially Weighted Moving Average) control chart, which correlates the SWMs (Steering Wheel Movements) with deviations on the road. It has low cost, provides quick detection and, more importantly, can be used in online applications. A total of 43 sets of driving data were collected from various driving simulations performed by subject drivers. Results show that the application of this technique is feasible, allowing the identification of dangerous lane departure events with a 91.42% precision and low false positive rate.
驾驶车辆已经成为一项具有挑战性的任务,特别是因为高达90%的车辆事故是由驾驶员的错误造成的。在本文中,我们提出了一种使用SPC(统计过程控制)技术进行事件识别的方法,称为EWMA(指数加权移动平均)控制图,它将方向盘运动与道路上的偏差联系起来。该方法成本低,检测速度快,更重要的是可用于在线应用。本研究共收集了43组受试者驾驶模拟的驾驶数据。结果表明,该技术的应用是可行的,能够以91.42%的准确率和较低的误报率识别危险车道偏离事件。
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引用次数: 4
IMSN Routing on Wi-Fi Direct Enabled Devices Wi-Fi直连设备上的IMSN路由
R. P. Marinho, Urbano Botrel Menegato, R. Oliveira
Information exchange between mobile devices grows every day. The communication relies on a network with an access point (Wi-Fi, cellular, etc.) using ad hoc communication because Wi-Fi Direct would avoid this dependence. Currently, Wi-Fi Direct does not support multi-hop communication or moving devices. This work focuses on expanding the use of Wi-Fi Direct technology, so that information sent from a device can walk on the network (multi-hop). The number of exchanged messages by devices were measured using four classic routing protocols: i) flooding, ii) Ad hoc On-demand Distance Vector (AODV), iii) AODV-Backup Route (AODV-BR), and iv) Location-Aided Routing (LAR) and a new protocol that we proposed, namely Contact and Social Behavior Routing (CSB) that uses Impromptu Mobile Social Network (IMSN) metrics to store routes. We see that even with some challenges one can route mobile devices over Wi-Fi Direct.
移动设备之间的信息交换每天都在增长。这种通信依赖于使用自组织通信的带有接入点(Wi-Fi、蜂窝等)的网络,因为Wi-Fi Direct可以避免这种依赖。目前,Wi-Fi Direct不支持多跳通信和移动设备。这项工作的重点是扩大Wi-Fi Direct技术的使用,以便从设备发送的信息可以在网络上行走(多跳)。设备交换消息的数量使用四种经典路由协议进行测量:i)洪水,ii) Ad hoc按需距离矢量(AODV), iii) AODV-备份路由(AODV- br), iv)位置辅助路由(LAR)和我们提出的新协议,即使用即兴移动社交网络(IMSN)度量来存储路由的联系和社会行为路由(CSB)。我们看到,即使遇到一些挑战,人们也可以通过Wi-Fi Direct路由移动设备。
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引用次数: 4
Design and Implementation of a Software-Defined Integrated Wired-Wireless Network Testbed 软件定义有线-无线综合网络试验台的设计与实现
E. Luengo, C. Weber, S. Shah-Heydari, K. El-Khatib
Software-Defined Networking (SDN) has been gaining momentum as the main technology for implementation of data center environment, and its usage has recently been extended to transport and wireless networks. Recently, research has been conducted on applying SDN principals to 802.11 networks in order to solve traditional issues such as handover, Radio Resource Management (RRM), network security, as well as integration of wired and 802.11 networks. This paper presents a design for the integration of 802.11 access points into an SDN test bed as an experimental environment to perform analysis, development and testing of SDN applications in 802.11 networks. We present design challenges and solutions, and performance results obtained from this testbed.
软件定义网络(SDN)已成为实现数据中心环境的主要技术,近年来已扩展到传输网络和无线网络。为了解决传统的网络切换、无线资源管理(RRM)、网络安全以及有线网络与802.11网络的融合等问题,近年来开展了将SDN主体应用于802.11网络的研究。本文提出了一种将802.11接入点集成到SDN试验台的设计方案,作为在802.11网络中对SDN应用进行分析、开发和测试的实验环境。我们提出了设计挑战和解决方案,以及从该试验台获得的性能结果。
{"title":"Design and Implementation of a Software-Defined Integrated Wired-Wireless Network Testbed","authors":"E. Luengo, C. Weber, S. Shah-Heydari, K. El-Khatib","doi":"10.1145/2810362.2826697","DOIUrl":"https://doi.org/10.1145/2810362.2826697","url":null,"abstract":"Software-Defined Networking (SDN) has been gaining momentum as the main technology for implementation of data center environment, and its usage has recently been extended to transport and wireless networks. Recently, research has been conducted on applying SDN principals to 802.11 networks in order to solve traditional issues such as handover, Radio Resource Management (RRM), network security, as well as integration of wired and 802.11 networks. This paper presents a design for the integration of 802.11 access points into an SDN test bed as an experimental environment to perform analysis, development and testing of SDN applications in 802.11 networks. We present design challenges and solutions, and performance results obtained from this testbed.","PeriodicalId":332932,"journal":{"name":"Proceedings of the 13th ACM International Symposium on Mobility Management and Wireless Access","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123630078","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
期刊
Proceedings of the 13th ACM International Symposium on Mobility Management and Wireless Access
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