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2017 IEEE 86th Vehicular Technology Conference (VTC-Fall)最新文献

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On the Performance Evaluation of Vehicular PKI Protocol for V2X Communications Security 基于V2X通信安全的车载PKI协议性能评估
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8288286
Farah Haidar, Arnaud Kaiser, B. Lonc
Cooperative Intelligent Transportation Systems (CITS) is an ongoing technology that will change our driving experience in the near future. In such systems, vehicles and Road-Side Units (RSU) cooperate by broadcasting V2X messages over the vehicular network (802.11p). Safety applications use these data to detect dangerous situations on time and avoid them. The security of V2X communications is based on the use of a vehicular Public Key Infrastructure (PKI) that delivers digital certificates to vehicles and RSU. Vehicles frequently change their certificate in order to make tracking more difficult and thus preserve drivers privacy. In this paper, we evaluate the performance of our PKI regarding the reloading of certificates by comparing two communication profiles (with and without V2X security). We developed a Proofof- Concept (PoC) with real implementation of the PKI protocol and the embedded system. The obtained results show that the end-to-end latency between a requesting vehicle and the PKI is non-negligible. We then discuss and propose optimizations that can be done to improve the performance of the system.
协同智能交通系统(CITS)是一项正在发展的技术,将在不久的将来改变我们的驾驶体验。在这种系统中,车辆和路侧单元(RSU)通过车载网络(802.11p)广播V2X消息进行合作。安全应用程序使用这些数据及时发现危险情况并避免它们。V2X通信的安全性基于车辆公钥基础设施(PKI)的使用,该基础设施向车辆和RSU提供数字证书。车辆经常更改其证书,以使跟踪更加困难,从而保护驾驶员的隐私。在本文中,我们通过比较两种通信配置文件(有和没有V2X安全性)来评估PKI在重新加载证书方面的性能。我们开发了一个概念验证(PoC),并实际实现了PKI协议和嵌入式系统。得到的结果表明,请求车辆和PKI之间的端到端延迟是不可忽略的。然后,我们讨论并提出可以改进系统性能的优化方法。
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引用次数: 30
Transport Network Design for FrontHaul 前传传输网络设计
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8288357
P. Sehier, A. Bouillard, F. Mathieu, Thomas J Deiss
The evolution of LTE and advent of 5G networks increases further the bandwidth requirements for RAN. In parallel, the deployment of Centralized RAN architecture raises new challenges on the FrontHaul network. The inflexibility of the legacy CPRI is the primary challenge to Virtualized RAN deployments, and there is currently a strong trend towards the use of packetized transport methods, together with flexible split RAN based architectures. Functional splits within the real-time functions of the RAN have very stringent requirements on latency and jitter. This paper analyzes the jitter produced in the switching nodes of the FrontHaul network, and proposes dimensioning rules.
LTE的演进和5G网络的出现进一步增加了RAN的带宽需求。同时,集中式RAN架构的部署对前传网络提出了新的挑战。传统CPRI的不灵活性是虚拟化RAN部署面临的主要挑战,目前使用分组传输方法以及基于灵活的拆分RAN架构的趋势非常强烈。无线局域网实时功能中的功能分割对延迟和抖动有非常严格的要求。分析了前传网络交换节点产生的抖动,提出了量纲规则。
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引用次数: 9
Performance of Overlaid MIMO Cellular Networks with TAS/MRC under Hybrid-Access Small Cells and Poisson Field Interference 混合接入小蜂窝和泊松场干扰下TAS/MRC叠加MIMO蜂窝网络的性能
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8288074
Amr A. Abdelnabi, F. Al-Qahtani, R. Radaydeh, M. Shaqfeh, Raed F. Manna
This paper presents new approaches to characterize the achieved performance of hybrid control-access small cells in the context of two-tier multi-input multi-output (MIMO) cellular networks with random interference distributions. The hybrid scheme at small cells (such as femtocells) allows for sharing radio resources between the two network tiers according to the densities of small cells and their associated users, as well as the observed interference power levels in the two network tiers. The analysis considers MIMO transceivers at all nodes, for which antenna arrays can be utilized to implement transmit antenna selection (TAS) and receive maximal ratio combining (MRC) under MIMO point-to-point channels. Moreover, it tar-gets network-level models of interference sources inside each tier and between the two tiers, which are assumed to follow Poisson field processes. To fully capture the occasions for Poisson field distribution on MIMO spatial domain. Two practical scenarios of interference sources are addressed including highly-correlated or uncorrelated transmit antenna arrays of the serving macrocell base station. The analysis presents new analytical approaches that can characterize the downlink outage probability performance in any tier. Furthermore, the outage performance in high signal-to-noise (SNR) regime is also obtained, which can be useful to deduce diversity and/or coding gains.
本文提出了在具有随机干扰分布的两层多输入多输出(MIMO)蜂窝网络中表征混合控制接入小单元的性能的新方法。小型蜂窝(如飞蜂窝)的混合方案允许根据小型蜂窝及其相关用户的密度,以及在两个网络层中观察到的干扰功率水平,在两个网络层之间共享无线电资源。该分析考虑了所有节点的MIMO收发器,在MIMO点对点信道下,可以利用天线阵列实现发射天线选择(TAS)和接收最大比组合(MRC)。此外,它还针对每层内部和两层之间的干扰源的网络级模型,假设它们遵循泊松场过程。为了充分捕捉MIMO空间域泊松场分布的场合。讨论了两种干扰源的实际情况,包括服务宏蜂窝基站的高相关或不相关发射天线阵列。该分析提出了新的分析方法,可以表征任何层的下行链路中断概率性能。此外,还获得了高信噪比(SNR)状态下的中断性能,这可以用于推断分集和/或编码增益。
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引用次数: 0
Methods for Channel Sounder Measurement Verification 航道测深仪测量验证方法
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8288374
K. Remley, C. Gentile, A. Zajić, J. Quimby
We describe an activity of the 5G mmWave Channel Sounder Alliance to verify the hardware performance of channel sounders operating at mmWave frequencies. Such verification procedures are critical when attempting to compare data from sounders having different architectures in various environments. Two different methods are described and illustrated with simple measurement examples.
我们描述了5G毫米波信道测深器联盟的一项活动,以验证在毫米波频率下工作的信道测深器的硬件性能。当试图比较不同环境中具有不同架构的探测仪的数据时,此类验证程序至关重要。介绍了两种不同的测量方法,并用简单的测量实例进行了说明。
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引用次数: 4
A Novel Optimization Framework for C-RAN BBU Selection Based on Resiliency and Price 基于弹性和价格的C-RAN电池选择优化框架
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8288046
Mohammed Yazid Lyazidi, L. Giupponi, J. Mangues‐Bafalluy, N. Aitsaadi, R. Langar
As Mobile Network Operators (MNOs) are shifting towards Cloud- Radio Access Network (C-RAN), they have to upgrade their infrastructure to not only support higher processing capacities but also to be more resilient. We consider the problem where a MNO is faced with the choice of selecting virtualized Baseband Units (BBUs) from various cloud service providers, that are each characterized with distinct failure probabilities and prices. We propose to solve the BBU selection problem, formulated as an Integer Linear Program (ILP) subject to BBU capacity and virtualization cost using the Branch- and- Price algorithm. We present several schemes depicting which optimization goal the MNO can foster the most: BBU processing power minimization, resiliency, traffic handling or all. Simulation results demonstrate the good performance of our algorithm to solve the BBU selection problem for all schemes, while also emphasizing the advantages of a particular one that can realize more than 10% in virtualization cost savings.
随着移动网络运营商(mno)转向云无线接入网络(C-RAN),他们必须升级基础设施,不仅要支持更高的处理能力,还要更具弹性。我们考虑了MNO面临从各种云服务提供商中选择虚拟基带单元(BBUs)的问题,每个BBUs都具有不同的故障概率和价格。我们建议使用Branch- and- Price算法来解决BBU选择问题,该问题被描述为一个受BBU容量和虚拟化成本影响的整数线性规划(ILP)。我们提出了几个方案,描述了MNO最能促进的优化目标:BBU处理能力最小化、弹性、流量处理或所有。仿真结果表明,该算法能够很好地解决所有方案的BBU选择问题,同时也强调了某一方案的优势,该方案可以实现10%以上的虚拟化成本节约。
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引用次数: 13
Efficient Bayesian Communication Approach for Smart Agriculture Applications 智能农业应用中的高效贝叶斯通信方法
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8288147
Cristanel Razafimandimby, V. Loscrí, A. Vegni, A. Neri
To meet the food demand of the future, farmers are turning to the Internet of Things (IoT) for advanced analytics. In this case, data generated by sensor nodes and collected by farmers on the field provide a wealth of information about soil, seeds, crops, plant diseases, etc. Therefore, the use of high tech farming techniques and IoT technology offer insights on how to optimize and increase yield. However, one major challenge that should be addressed is the huge amount of data generated by the sensing devices, which make the control of sending useless data very important. To face this challenge, we present a Bayesian Inference Approach (BIA), which allows avoiding the transmission of high spatio-temporal correlated data. In this paper, BIA is based on the PEACH project, which aims to predict frost events in peach orchards by means of dense monitoring using low-power wireless mesh networking technology. Belief Propagation algorithm has been chosen for performing an approximate inference on our model in order to reconstruct the missing sensing data. According to different scenarios, BIA is evaluated based on the data collected from real sensors deployed on the peach orchard. The results show that our proposed approach reduces drastically the number of transmitted data and the energy consumption, while maintaining an acceptable level of data prediction accuracy.
为了满足未来的粮食需求,农民正在转向物联网(IoT)进行高级分析。在这种情况下,由传感器节点产生并由农民在田间收集的数据提供了丰富的关于土壤、种子、作物、植物病害等信息。因此,高科技农业技术和物联网技术的使用为如何优化和提高产量提供了见解。然而,应该解决的一个主要挑战是传感设备产生的大量数据,这使得控制发送无用数据变得非常重要。为了应对这一挑战,我们提出了一种贝叶斯推理方法(BIA),该方法可以避免高时空相关数据的传输。本文以PEACH项目为基础,利用低功耗无线网状网络技术,通过密集监测的方式预测桃园霜冻事件。为了重建缺失的感知数据,我们选择了信念传播算法对模型进行近似推理。根据不同的场景,根据部署在桃园上的真实传感器收集的数据对BIA进行评估。结果表明,我们提出的方法在保持可接受的数据预测精度的同时,大大减少了传输数据的数量和能耗。
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引用次数: 17
Multi-Operator Spectrum Sharing Models under Different Cooperation Schemes for Next Generation Cellular Networks 下一代蜂窝网络不同合作方案下的多运营商频谱共享模型
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8287982
M. Patwary, Raouf Abozariba, M. Asaduzzaman
Spectrum sharing between operators with exclusive licensing have become a major concern for mobile network operators and regulators to respond to the growing spectrum demand of the multimedia applications. One of the important issues in spectrum sharing is to determine the potential benefit when multi-operators share the resources under certain mutual agreements. The paper focuses on dynamic spectrum sharing management in next generation cellular networks. We propose three loss network models and derive the closed form expression of blocking probability, each having specific level of cooperation and interaction. The analytical frameworks are presented to analyze the benefits due to multi-operator cooperation for spectrum sharing. This quantifies the operators' gains and degradations of operators engaged in cooperative arrangements. We also analyze the overall network performance in terms of spectrum utilization and present a detailed comparisons between the proposed analytical frameworks.
拥有独家授权的运营商之间的频谱共享已成为移动网络运营商和监管机构关注的主要问题,以应对多媒体应用日益增长的频谱需求。频谱共享的一个重要问题是确定多运营商在一定的相互协议下共享资源时的潜在效益。本文主要研究下一代蜂窝网络中的动态频谱共享管理。我们提出了三种损失网络模型,并推导了阻塞概率的封闭形式表达式,每种模型都具有特定的合作和交互水平。提出了多运营商合作频谱共享的分析框架。这量化了参与合作安排的运营商的收益和退化。我们还分析了频谱利用率方面的整体网络性能,并对所提出的分析框架进行了详细的比较。
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引用次数: 3
A Joint Batch-Routing and Channel Assignment Approach in Hybrid Data Center Networks 混合数据中心网络中一种联合批路由和信道分配方法
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8288335
Boutheina Dab, Ilhem Fajjari, N. Aitsaadi
Data centers are dealing with a rich panoply of applications which are distributed across thousands of servers. In this context, Cloud providers seek to maximize their revenue by meeting the tremendous traffic demand. Unfortunately, the conventional wired infrastructures struggle to resist to such a traffic explosion and new innovative techniques are required. In this respect, we put forward a Hybrid Data Center Network architecture based on the CISCO's Massively Scalable Data Center model, that leverages both the wired (Fiber/Ethernet) and wireless (IEEE 802.11ad) infrastructures. In this paper, we address the problem of batch-routing jointly to spectrum allocation of intra-data center communication flows. To do so, first, we formulate the problem based on Multi-Commodity Flow problem while considering interference constraints. Then, we propose a new strategy named Joint Batch Routing and Channel assignment approach in HDCN (BR-HDCN). Based on extensive simulations conducted in QualNet simulator while considering the full protocol stack, the obtained results for both: i) real Facebook's DC, and ii) uniform, traces, show that our proposal outperforms the related prominent strategies.
数据中心正在处理分布在数千台服务器上的大量应用程序。在这种情况下,云提供商寻求通过满足巨大的流量需求来实现收入最大化。不幸的是,传统的有线基础设施难以抵御这种流量爆炸,需要新的创新技术。在这方面,我们提出了一种基于思科大规模可扩展数据中心模型的混合数据中心网络架构,它利用了有线(光纤/以太网)和无线(IEEE 802.11ad)基础设施。本文研究了数据中心内部通信流频谱分配中的批路由问题。为此,我们首先在考虑干扰约束的情况下,在多商品流问题的基础上提出了该问题。然后,我们提出了一种新的HDCN联合批处理路由和信道分配方法(BR-HDCN)。基于在QualNet模拟器中进行的大量模拟,同时考虑到完整的协议栈,获得的结果表明:i)真实的Facebook DC和ii)统一的痕迹,我们的提议优于相关的突出策略。
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引用次数: 0
On the Joint Use of Time Reversal and POPS-OFDM for 5G Systems 时间反转与pop - ofdm在5G系统中的联合应用研究
Pub Date : 2017-09-24 DOI: 10.1109/VTCFall.2017.8287913
Wafa Khrouf, Zeineb Hraiech, F. Abdelkefi, M. Siala, M. Crussiére
This paper investigates the efficiency of the combination of the Ping-pong Optimized Pulse Shaping-Orthogonal Frequency Division Multiplexing (POPS-OFDM) algorithm with the Time Reversal (TR) technique. This algorithm optimizes the transmit and receive OFDM waveforms with a significant reduction in the system Inter-Carrier Interference (ICI)/Inter-Symbol Interference (ISI) and guarantees maximal Signal to Interference plus Noise Ratio (SINR) for realistic mobile radio channels in 5G Systems. To this end, we characterize the scattering function of the TR channel and we derive the closed-form expression of the SINR as a Generalized Rayleigh Quotient. Numerical analysis reveals a significant gain in SINR and Out-Of-Band (OOB) emissions, brought by the proposed TR-POPS-OFDM approach.
本文研究了乒乓优化脉冲整形-正交频分复用(POPS-OFDM)算法与时间反转(TR)技术相结合的效率。该算法优化了发送和接收OFDM波形,显著降低了系统载波间干扰(ICI)/符号间干扰(ISI),并保证了5G系统中实际移动无线电信道的最大信噪比(SINR)。为此,我们对TR信道的散射函数进行了表征,并导出了SINR的广义瑞利商的封闭表达式。数值分析表明,提出的tr - pop - ofdm方法带来了信噪比和带外(OOB)发射的显著增益。
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引用次数: 1
Analysis of a Location-Aware Probabilistic Strategy for Opportunistic Vehicle-to-Vehicle Relay 机会型车对车中继位置感知概率策略分析
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8288306
Wei Song, Xi Tao
Vehicular networks can enable a variety of services to improve safety and comfort for travelling. To mitigate the high cost for deploying dense roadside units (RSUs), vehicle-to-vehicle (V2V) communications can complement vehicle-to-infrastructure (V2I) communications to compensate for intermittent connectivity and enhance transmission performance. In this paper, we analyze a location-aware opportunistic V2V relay scheme in terms of the transmission success probability for a target destination vehicle and the connectivity probability when the scheme is applied to inter-connect adjacent RSUs. The analytical approach based on stochastic geometry captures the effects of key system parameters such as vehicle density, RSU coverage, and modulation schemes. It can be used to adapt the forwarding probabilities of relay vehicles with the network conditions. The numerical and simulation results demonstrate the accuracy of the analysis and the effectiveness of V2V relay scheme.
车辆网络可以提供各种服务,以提高旅行的安全性和舒适性。为了降低部署密集路边单元(rsu)的高成本,车对车(V2V)通信可以补充车对基础设施(V2I)通信,以弥补间歇性连接并提高传输性能。本文分析了一种位置感知的机会式V2V中继方案,分析了该方案应用于相邻rsu互连时,目标目的车辆的传输成功概率和连接概率。基于随机几何的分析方法捕获了关键系统参数的影响,如车辆密度、RSU覆盖范围和调制方案。该方法可以根据网络条件调整中继车辆的转发概率。数值和仿真结果验证了分析的准确性和V2V中继方案的有效性。
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引用次数: 4
期刊
2017 IEEE 86th Vehicular Technology Conference (VTC-Fall)
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