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An Indoor Localization System within an IMS Service Infrastructure IMS服务基础设施中的室内定位系统
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536926
P. Addesso, M. Mauro, M. Longo, G. D. Corte, A. Robustelli
The paper presents an architectural proposal that integrates a vehicle parking system, which offers a series of specific services (billing, targeted marketing, etc.), into the 3GPP IP Multimedia Subsystem (IMS), with a specific focus on the localization of the vehicle in indoor areas. The vehicle is equipped with a device hosting an ad-hoc software client exploiting the Wi-Fi network card. The solution takes advantage of the widespread adoption of the 802.11x WLAN technology in order to provide a value added service using already installed infrastructure. The testing area is an indoor parking lot and the IT infrastructure includes several Wi-Fi Access Points appropriately located inside the parking area, some user equipments interacting with them, a Location Server able to provide an estimate of a vehicle's position and a Presence Server offering specific location-based services on behalf of the IMS infrastructure.
本文提出了一个将车辆停放系统集成到3GPP IP多媒体子系统(IMS)中的架构方案,该系统提供一系列特定服务(计费、目标营销等),并特别关注车辆在室内区域的定位。车辆配备一个设备,承载一个利用Wi-Fi网卡的特设软件客户端。该解决方案利用了广泛采用的802.11x WLAN技术,以便使用已安装的基础设施提供增值服务。测试区域是一个室内停车场,IT基础设施包括几个适当位于停车场内的Wi-Fi接入点、一些与之交互的用户设备、一个能够提供车辆位置估计的位置服务器和一个代表IMS基础设施提供特定基于位置的服务的Presence Server。
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引用次数: 0
A Data Mashup Engine for Smartphones Based on XProc 基于XProc的智能手机数据混搭引擎
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536942
H. Hofstätter, Amin Andjomshoaa, A. Tjoa
One of smartphones' core factor of success is the vast amount of available mobile applications. Despite this numerous number of apps there cannot exist one for every single use case. If a user does not find an app fulfilling the requirements, he rarely is able to write one of its own because of (1) missing programming skills, (2) too much time effort for simple tasks and (3) expenses on particular systems. This work proposes a mobile workflow engine on Android to empower users without much technical knowledge to build their solution in a platform-neutral and standardized language called XProc which is the W3C recommendation for data processing via XML technologies. For this purpose one of the XProc implementations is ported to Android and extended with smartphone specific features and services such as location, short messages, mobile UI, etc. Also a trigger mechanism has been implemented to activate workflows based on the user's context like time, location and reception of a short messages. A performance measurement done in this work demonstrates no execution drawback compared to native development after a workflow is compiled to its object representation.
智能手机成功的核心因素之一是大量可用的移动应用程序。尽管有这么多的应用程序,但不可能针对每个用例都有一个应用程序。如果用户发现一款应用不能满足要求,他就很少能够自己编写一款应用,因为(1)缺乏编程技能,(2)在简单任务上花费太多时间,(3)在特定系统上花费太多。这项工作提出了一个Android上的移动工作流引擎,使没有太多技术知识的用户能够用一种名为XProc的平台中立和标准化语言构建他们的解决方案,XProc是W3C推荐的通过XML技术进行数据处理的语言。为此,其中一个XProc实现被移植到Android,并扩展了智能手机特定的功能和服务,如定位、短消息、移动UI等。此外,还实现了一个触发机制,可以根据用户的上下文(如时间、位置和接收短消息)激活工作流。在此工作中进行的性能测量表明,在将工作流编译为其对象表示后,与本机开发相比,没有执行缺陷。
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引用次数: 0
Enhancing security in mobile data networks through end user and core network cooperation 通过终端用户和核心网合作,提高移动数据网络的安全性
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536875
Martin Nagy, I. Kotuliak
Smartphones, tablets and other mobile devices are quickly becoming a common part of our lives. With the popularity growth of these devices, the amount of mobile malware and other cyber-attacks rises. Many security solutions exist for various mobile platforms, however firewall functionality is missing in the majority of these applications. The reason is lack of network traffic filtration support in the most of modern mobile operating systems. This leaves the end user devices protected only by security infrastructure of the internet service provider. This paper proposes an enhanced security model and architecture, which enables network traffic filtration for devices without support of such feature in the operating system. It requires minimal changes in the existing infrastructure and allows multiple deployment scenarios. The usage of this architecture is not limited to mobile devices only, but can be used also in fixed networks.
智能手机、平板电脑和其他移动设备正迅速成为我们生活中常见的一部分。随着这些设备的普及,移动恶意软件和其他网络攻击的数量也在上升。针对各种移动平台存在许多安全解决方案,但是这些应用程序中的大多数都缺少防火墙功能。其原因是大多数现代移动操作系统缺乏对网络流量过滤的支持。这使得最终用户设备只能由互联网服务提供商的安全基础设施保护。本文提出了一种增强的安全模型和架构,可以对操作系统中不支持网络流量过滤功能的设备进行网络流量过滤。它只需要对现有基础设施进行最小的更改,并允许多个部署场景。这种架构的使用不仅限于移动设备,还可以在固定网络中使用。
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引用次数: 4
Extended PIN Authentication Scheme Allowing Multi-Touch Key Input 扩展PIN认证方案,允许多点触摸键输入
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536944
Tetsuji Takada, Yuki Kokubun
In this paper, we report our trial to make a better form of personal identification number(PIN) authentication for a mobile device. We think that mobile users should be given a more secure alternative authentication because PIN authentication has well-known flaws. However, proposed alternative schemes change the authentication method drastically and that may discomfort mobile users. Our approach is to just change the input operation of PIN authentication by allowing more than one number at a time using a multi-touch enabled screen. We implemented a web-based prototype system and conducted an informal user study using it. The results of the study indicate that PIN input time, input errors and secret memorability of the proposed scheme were no worse than those of conventional PIN authentication. We also discuss the mathematical security level and other advantages of the scheme.
在本文中,我们报告了我们的试验,使一个更好的形式的个人识别号码(PIN)认证的移动设备。我们认为应该为移动用户提供更安全的替代身份验证,因为PIN身份验证存在众所周知的缺陷。然而,提出的替代方案极大地改变了身份验证方法,这可能会让移动用户感到不适。我们的方法是通过使用多点触控屏幕,允许一次输入多个数字来改变PIN身份验证的输入操作。我们实现了一个基于web的原型系统,并使用它进行了非正式的用户研究。研究结果表明,该方案的PIN输入时间、输入错误和秘密记忆性均不低于传统的PIN认证方法。讨论了该方案的数学安全级别和其他优点。
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引用次数: 10
Analysis of a context-aware recommender system model for smart urban environment 面向智慧城市环境的情境感知推荐系统模型分析
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536931
Charles Gouin-Vallerand, J. A. D. L. Cruz
Recommender systems, deployed on the web and in mobile devices, help users in finding services and products that are addressing their needs, based on their profile. On the other hand, such systems help also organizations in promoting their products or services to a targeted market. Users in mobility in smart urban spaces are surrounded with products and services, such as mobile device applications. In this paper, we are presenting the result of a survey, where participants had to give their opinions on recommendation modalities in several scenarios of context-aware service recommendation in urban environments. These results are followed by an analysis and a discussion.
部署在网络和移动设备上的推荐系统,可以根据用户的个人资料,帮助用户找到满足其需求的服务和产品。另一方面,这样的系统也帮助组织向目标市场推广他们的产品或服务。智能城市空间中的移动用户被产品和服务包围,例如移动设备应用程序。在本文中,我们展示了一项调查的结果,在该调查中,参与者必须就城市环境中情境感知服务推荐的几种场景中的推荐模式给出他们的意见。对这些结果进行了分析和讨论。
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引用次数: 5
Probabilistic Inference of Multi-Object Trajectories 多目标轨迹的概率推理
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536915
Pengcheng Wang
This paper presents a novel approach of inferring the trajectories of moving objects in a library, a conference hall, or a large shopping mall, where GPS, Wi-Fi or cellular localization is not readily available or is deemed too expensive. Our solution is a distributed one whereby each object records all the other objects it encounters as well as the time of contact and such contact histories collectively enable the probabilistic inference of each object's whereabouts in the past as long as the map of the area is known.
本文提出了一种推断图书馆、会议厅或大型购物中心中移动物体轨迹的新方法,在这些地方,GPS、Wi-Fi或蜂窝定位不容易获得或被认为过于昂贵。我们的解决方案是分布式的,即每个物体记录它遇到的所有其他物体,以及接触的时间和这些接触历史,只要已知该区域的地图,就可以对每个物体过去的位置进行概率推断。
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引用次数: 0
MoM-NOCS: Management of Mobile Multimedia Nature Observations using Crowd Sourcing MoM-NOCS:使用众包的移动多媒体自然观测管理
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536887
Chrisa Tsinaraki, Giannis Skevakis, Ioanna Trochatou, S. Christodoulakis
We describe MoM-NOCS, a Framework and a System that support communities with common interests in nature to capture and share multimedia observations of nature objects or events using mobile devices. The observations are automatically associated with contextual metadata that allow them to be visualized on top of 2D or 3D maps. The observations are managed by a multimedia management system, and annotated by the same and/or other users with common interests. Annotations made by the crowd support the knowledge distillation of the data and data provenance processes in the system. The Framework offers rich functionality for visualizing the observations made by the crowd as function of time. We have designed the MoM-NOCS to be complementary and interoperable with systems that are managed by Natural History museums like MMAT [8] and biodiversity metadata management systems like BIOCASE [4] and GBIF [6] so that they can link to interesting observations in our system, and the statistics on the observations that they manage can be visualized by our software.
我们描述了MoM-NOCS,一个框架和系统,它支持对自然有共同兴趣的社区使用移动设备捕获和共享自然物体或事件的多媒体观察。观测结果自动与上下文元数据相关联,允许它们在2D或3D地图上可视化。观察结果由多媒体管理系统管理,并由相同和/或其他有共同兴趣的用户注释。群体标注支持系统中数据的知识提炼和数据溯源过程。该框架提供了丰富的功能,可以将人群的观察作为时间的函数进行可视化。我们将MoM-NOCS设计成与自然历史博物馆(如MMAT[8])和生物多样性元数据管理系统(如BIOCASE[4]和GBIF[6])管理的系统互补和互操作,这样它们就可以链接到我们系统中有趣的观测结果,并且它们管理的观测数据可以通过我们的软件可视化。
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引用次数: 6
General all-Layers combined with Efficient WLAN MAC Layer Headers Compression 通用全层结合高效WLAN MAC层报头压缩
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536858
David Levy, I. Kotuliak
For wireless systems, it is of vital importance to use the scarce radio resources in an efficient way. In a typical system, each layer adds its own header, resulting in prohibitive signaling overhead. Several header compression schemes have been proposed to reduce this overhead. All compression schemes must be kept simple to cope with high load. Unfortunately, existing compression schemes cover, each, no more than two layers taking advantage of header format knowledge. We propose a header compression scheme that can cover all layers, from the 802.11 MAC layer up to the Application layer, without required knowledge of the headers format. We compare our proposal to a general simple compression scheme, and show that our proposal processing time is 60% faster. We show that on average, in a typical scenario, with high SNR, we reduce the header overhead by 70 bytes.
对于无线系统来说,如何有效地利用稀缺的无线资源是至关重要的。在典型的系统中,每一层都添加了自己的报头,导致了令人望而却步的信令开销。已经提出了几种报头压缩方案来减少这种开销。所有压缩方案必须保持简单,以应对高负载。不幸的是,现有的压缩方案利用报头格式知识覆盖的层不超过两层。我们提出了一个报头压缩方案,它可以覆盖所有层,从802.11 MAC层到应用层,而不需要了解报头格式。我们将我们的提议与一般的简单压缩方案进行了比较,结果表明我们的提议处理时间快了60%。我们表明,平均而言,在一个典型的场景中,具有高信噪比,我们减少了70字节的报头开销。
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引用次数: 2
An Analysis of Different Approaches to Gait Recognition Using Cell Phone Based Accelerometers 基于手机加速度计的步态识别方法分析
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536895
Muhammad Muaaz, R. Mayrhofer
Biometric gait authentication using Personal Mobile Device (PMD) based accelerometer sensors offers a user-friendly, unobtrusive, and periodic way of authenticating individuals on PMD. In this paper, we present a technique for gait cycle extraction by incorporating the Piecewise Linear Approximation (PLA) technique. We also present two new approaches to classify gait features extracted from the cycle-based segmentation by using Support Vector Machines (SVMs); a) pre-computed data matrix, b) pre-computed kernel matrix. In the first approach, we used Dynamic Time Warping (DTW) distance to compute data matrices, and in the later DTW is used for constructing an elastic similarity measure based kernel function called Gaussian Dynamic Time Warp (GDTW) kernel. Both approaches utilize the DTW similarity measure and can be used for classifying equal length gait cycles, as well as different length gait cycles. To evaluate our approaches we used normal walk biometric gait data of 51 participants. This gait data is collected by attaching a PMD to the belt around the waist, on the right-hand side of the hip. Results show that these new approaches need to be studied more, and potentially lead us to design more robust and reliable gait authentication systems using PMD based accelerometer sensor.
使用基于加速度计传感器的个人移动设备(PMD)的生物识别步态认证提供了一种用户友好的、不显眼的、定期的PMD个人身份验证方法。在本文中,我们提出了一种结合分段线性逼近(PLA)技术的步态周期提取技术。我们还提出了两种新的方法,利用支持向量机(svm)对基于周期分割提取的步态特征进行分类;A)预计算的数据矩阵,b)预计算的核矩阵。在第一种方法中,我们使用动态时间扭曲(DTW)距离来计算数据矩阵,在第二种方法中,我们使用DTW来构建一个基于弹性相似度量的核函数,称为高斯动态时间扭曲(GDTW)核。两种方法都利用DTW相似度度量,可用于对等长步态周期和不同长度步态周期进行分类。为了评估我们的方法,我们使用了51名参与者的正常行走生物特征步态数据。这种步态数据是通过将PMD连接到腰部的皮带上收集的,该皮带位于臀部的右侧。结果表明,这些新方法需要更多的研究,并有可能引导我们使用基于PMD的加速度计传感器设计更鲁棒和可靠的步态认证系统。
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引用次数: 75
Mobile Education: Effective Integration of new mobile technologies into existing learning systems using MISA Method 移动教育:使用MISA方法将新的移动技术有效地整合到现有的学习系统中
Pub Date : 2013-12-02 DOI: 10.1145/2536853.2536862
Ouiame Filali Marzouki, Mohammed Khalidi, S. Bennani
Mobile learning seems to meet the growing need for communication, collaboration and obtaining relevant information at the appropriate time. It introduces new activities from real world through the use of mobile and wireless technologies in educational contexts. Thus, reviewing irregular verbs on a bus or organizing a training schedule on Smartphones is becoming more common today. Mobile learning development has been slowed in the early 2000s by both technical limitations and lack of teaching models. In this paper we propose a solution to educational issues by adopting the Method for Engineering Learning Systems MISA. Our work aims to identify key characteristics and dimensions for developing the appropriate content for mobility. These elements are the basis for customization of MISA method. Indeed, the different steps of MISA are governed by operating principles which ensure greater consistency and flexibility. Integrating mobile learning specifications in the development of these principles, we can adapt this method to design a mobile educational system.
移动学习似乎满足了人们对沟通、协作和在适当的时间获取相关信息日益增长的需求。它通过在教育环境中使用移动和无线技术,从现实世界引入新的活动。因此,在公交车上复习不规则动词或在智能手机上安排训练日程变得越来越普遍。由于技术限制和缺乏教学模式,移动学习的发展在21世纪初有所放缓。本文提出了一种采用工程学习系统MISA方法来解决教育问题的方法。我们的工作旨在确定开发适合移动性的内容的关键特征和维度。这些元素是MISA方法定制的基础。事实上,MISA的不同步骤是由确保更大的一致性和灵活性的操作原则所管理的。在这些原则的发展中整合移动学习规范,我们可以采用这种方法来设计一个移动教育系统。
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引用次数: 6
期刊
Advances in Mobile Multimedia
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