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2021 IEEE International Conference on Communications Workshops (ICC Workshops)最新文献

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Resource Allocation for Secure Rate-Splitting Multiple Access with Adaptive Beamforming 基于自适应波束形成的安全分速多址资源分配
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473880
Tenghao Cai, Jia Zhang, Shihao Yan, Lili Meng, Jiande Sun, N. Al-Dhahir
Rate splitting multiple access (RSMA) is promising to achieve high spectral efficiency with a higher flexibility relative to non-orthogonal multiple access (NOMA) and orthogonal multiple access (OMA). In this paper, a novel RSMA-based secure transmission scheme with artificial noise (AN) and an adaptive beamforming is developed with the aim of maximizing the secrecy sum rate (SSR) of the considered system subject to specific constraints. The joint optimization of the power allocation between useful messages and AN signals, rate splitting between the two legitimate receivers, and the two mastering parameters of the beamforming design is tackled. To solve such a non-convex problem, we first analytically reveal some properties of the solution and then focus on an asymptotic scenario with a sufficiently large number of transmit antennas to derive closed-form expressions for the optimal power allocation coefficients. This enables us to develop an efficient method to identify the optimal rate splitting and beamforming parameters. Our examinations demonstrate that the proposed RSMA-based scheme outperforms two benchmark schemes in terms of achieving a higher SSR and the achievable performance gain is exceptional when the number of transmit antennas is small.
相对于非正交多址(NOMA)和正交多址(OMA), RSMA有望实现更高的频谱效率和更高的灵活性。本文提出了一种新的基于rsma的安全传输方案,该方案采用人工噪声和自适应波束形成,目的是在特定约束条件下使系统的保密和率(SSR)最大化。讨论了有效报文和AN信号之间的功率分配、两个合法接收机之间的速率分割以及波束形成设计的两个主控参数的联合优化问题。为了解决这样一个非凸问题,我们首先解析地揭示了解的一些性质,然后重点关注一个具有足够大的发射天线数量的渐近场景,以导出最优功率分配系数的封闭形式表达式。这使我们能够开发出一种有效的方法来确定最佳的速率分裂和波束形成参数。我们的研究表明,所提出的基于rsma的方案在实现更高的SSR方面优于两种基准方案,并且当发射天线数量较少时,可实现的性能增益是例外的。
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引用次数: 7
Path Design for NOMA-Enhanced Robots: A Machine Learning Approach with Radio Map noma增强机器人路径设计:基于无线电地图的机器学习方法
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473594
Ruikang Zhong, Xiao Liu, Yuanwei Liu, Di Zhang, Yue Chen
A communication enabled indoor intelligent robots (IRs) service framework is proposed, where the non-orthogonal multiple access (NOMA) technique is adopted to enhance the data rate and user fairness. Build on the proposed communication model, motions of IRs and the down-link power allocation policy are jointly optimized to maximize the mission efficiency and communication reliability of IRs. In an effort to find the optimal path for IRs from the initial point to their mission destinations, a novel reinforcement learning approach named deep transfer deterministic policy gradient (DT-DPG) algorithm is proposed. In order to save the training time and hardware costs, the radio map is investigated and provided to the agent as a virtual training environment. Our simulation demonstrates that 1) The participation of the NOMA technique effectively improves the communication reliability of IRs; 2) The radio map is qualified to be a virtual training environment, and its statistical channel state information improves training efficiency by about 30%; 3) The proposed algorithm is superior to the deep deterministic policy gradient (DDPG) algorithm in terms of the optimization performance, training time, and anti-local optimum ability.
提出了一种基于通信的室内智能机器人服务框架,该框架采用非正交多址(NOMA)技术来提高数据速率和用户公平性。在该通信模型的基础上,联合优化红外雷达的运动和下行功率分配策略,最大限度地提高红外雷达的任务效率和通信可靠性。为了寻找人工智能从初始点到任务目的地的最优路径,提出了一种新的强化学习方法——深度转移确定性策略梯度(DT-DPG)算法。为了节省训练时间和硬件成本,研究无线电地图并提供给智能体作为虚拟训练环境。仿真结果表明:1)NOMA技术的加入有效提高了红外雷达的通信可靠性;2)无线地图具备虚拟训练环境的条件,其信道状态信息统计可使训练效率提高30%左右;3)该算法在优化性能、训练时间、抗局部最优能力等方面均优于深度确定性策略梯度(deep deterministic policy gradient, DDPG)算法。
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引用次数: 0
[Copyright notice] (版权)
Pub Date : 2021-06-01 DOI: 10.1109/iccworkshops50388.2021.9473687
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引用次数: 0
Joint Resource Allocation for Efficient Federated Learning in Internet of Things Supported by Edge Computing 基于边缘计算的物联网高效联邦学习联合资源分配
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473734
Jian-ji Ren, Junshuai Sun, Hui Tian, Wanli Ni, Gaofeng Nie, Yingying Wang
Federated learning (FL) and edge computing are both important technologies to support the future Internet of Things (IoT). Despite that the network supported by edge computing has great potential to promote FL, it is more challenging to achieve efficient FL due to more complex resource coupling in it. Focus on this problem, we formulate a problem which minimizes the weighted sum of system cost and learning cost by jointly optimizing bandwidth, computation frequency, transmission power allocation and subcarrier assignment. In order to solve this mixed-integer non-linear problem, we first decouple the bandwidth allocation subproblem from the original problem and obtain a closed-form solution. Further considering the remaining joint optimization problem of computation frequency, transmission power and subcarrier, an iterative algorithm with polynomial time complexity is designed. In an iteration, the latency and computation frequency optimization subproblem and transmission power and subcarrier optimization subproblem are solved using the proposed algorithms in turn. The iterative algorithm is repeated until convergence. Finally, to verify the performance of the algorithm, we compare the proposed algorithm with five baselines. Numerical results show the significant performance gain and the robustness of the proposed algorithm.
联邦学习(FL)和边缘计算都是支持未来物联网(IoT)的重要技术。尽管边缘计算支持的网络有很大的潜力来促进FL,但由于其内部资源耦合更为复杂,因此实现高效FL更具挑战性。针对这一问题,我们通过共同优化带宽、计算频率、传输功率分配和子载波分配,提出了一个最小化系统成本和学习成本加权和的问题。为了解决这一混合整数非线性问题,我们首先将带宽分配子问题与原问题解耦,得到一个封闭解。进一步考虑剩余的计算频率、传输功率和子载波联合优化问题,设计了时间复杂度为多项式的迭代算法。在迭代中依次求解时延和计算频率优化子问题以及传输功率和子载波优化子问题。重复迭代算法,直到收敛。最后,为了验证算法的性能,我们将所提出的算法与五个基线进行了比较。数值结果表明,该算法具有显著的性能增益和鲁棒性。
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引用次数: 8
Line of Sight Probability Prediction for UAV Communication 无人机通信瞄准线概率预测
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473740
Imran Mohammed, I. Collings, S. Hanly
This paper presents an accurate approach to predict the probability of line-of-sight for unmanned aerial vehicle (UAV) communications. We present a new numerical approach to calculate the probability of line-of-sight as a function of UAV height and distance to a ground based receiver, using a two- dimensional model of building and UAV locations. We use this numerical approach to calculate the probability of line-of-sight as a function of elevation angle. We also provide closed-form formulas for the probability of LoS as a function of elevation angle. We show that our approaches predict the probability of line-of-sight more accurately than the existing approaches.
提出了一种准确预测无人机通信视距概率的方法。我们提出了一种新的数值方法来计算视距概率作为无人机高度和距离地面接收器的函数,使用建筑物和无人机位置的二维模型。我们用这种数值方法计算了视距概率随仰角的变化。我们还提供了作为仰角函数的LoS概率的封闭形式公式。我们证明了我们的方法比现有的方法更准确地预测了视线的概率。
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引用次数: 8
Cooperative Spectrum Sensing: A New Approach for Minimum Interference and Maximum Utilisation 协同频谱传感:一种最小干扰和最大利用的新方法
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473716
Ogeen H. Toma, M. López-Benítez
Cooperative spectrum sensing is a widely studied topic in cognitive radio, which is capable of improving the detection accuracy of the primary channel activities. In cooperative spectrum sensing, secondary users' observations are sent to a common receiver, the Fusion Centre (FC), to obtain a better understanding and decision about the state of the primary channel. This work, however, investigates how these observations of the secondary users can efficiently be exploited in such a way that minimises the collision ratio between the secondary and the primary users and at the same time maximises the exploitation of the unused frequency spectrum. As a result, a simple yet efficient approach is proposed for cooperative spectrum sensing, which, to the best of the authors' knowledge, has not been covered in the literature. This approach outperforms the conventional approach of cooperative spectrum sensing for reducing the interference and increasing the utilisation of the unused frequency spectrum in cognitive radio systems.
协同频谱感知是认知无线电中一个被广泛研究的课题,它能够提高对主信道活动的检测精度。在协同频谱感知中,次要用户的观测被发送到一个共同的接收器,即融合中心(FC),以更好地了解和决定主信道的状态。然而,这项工作研究了如何有效地利用这些次要用户的观察结果,从而最大限度地减少次要用户和主要用户之间的冲突比率,同时最大限度地利用未使用的频谱。因此,提出了一种简单而有效的协同频谱感知方法,据作者所知,该方法尚未在文献中涉及。在认知无线电系统中,该方法在减少干扰和提高未使用频谱利用率方面优于传统的协同频谱感知方法。
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引用次数: 5
Cost-Aware Dynamic Bayesian Coalitional Game for Energy Trading among Microgrids 微电网间能源交易的成本感知动态贝叶斯联合博弈
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473855
M. Sadeghi, Shahram Mollahasani, M. Erol-Kantarci
The future electricity distribution system will be highly impacted by the emergence of peer-to-peer energy trading within microgrid (MG) communities. The idea of peer-to-peer energy trading is to export the surplus energy of a MG to a nearby MG or a group of MGs whose electrical load exceeds their generation. The variations in demand and generation, and the dynamic nature of these communities result in uncertainty on whether MGs will be able to satisfy their trading commitment or not. In this paper, the problem of energy trading among MGs is addressed with the objective of minimizing the cost under uncertainty. A Bayesian coalitional Game (BCG) based scheme is proposed, which helps the MGs to minimize the overall cost by forming stable coalitions. The results show 15% to 30% improvement in terms of cost minimization compared to an existing Q-learning based scheme and a conventional coalitional game theory (CG)-based approach from the literature.
微电网社区内点对点能源交易的出现将对未来的配电系统产生重大影响。点对点能源交易的思想是将一个MG的剩余能源输出到附近的MG或一组电力负荷超过其发电量的MG。需求和发电量的变化,以及这些社区的动态性质,导致了电力公司是否能够满足其交易承诺的不确定性。本文以不确定条件下的成本最小化为目标,研究了能源交易问题。提出了一种基于贝叶斯联合博弈(BCG)的方案,该方案通过形成稳定的联盟来帮助mg最小化总成本。结果显示,与现有的基于q学习的方案和传统的基于联合博弈论(CG)的方法相比,在成本最小化方面提高了15%到30%。
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引用次数: 2
A Verified Protocol for Secure Autonomous and Cooperative Public Transportation in Smart Cities 智慧城市安全自主协作公共交通的验证协议
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473591
H. A. Hamadi, Nida Nasir, C. Yeun, E. Damiani
This paper presents a new secure communication scheme for an Intelligent Public Transportation System (IPTS). The proposed scheme generates a cryptographic key and aims to share it among the ATSoI’s participant entities securely. It mitigates several cyber-threats such as; DoS attack, replay attack, Man-In-The-Middle Attack, and eavesdropping activities with more potential occurrences in such cooperative systems. Moreover, it relies on a nonce instead of a timestamp to avoid time synchronization problems. Thus, it provides mutual authentication, confidentiality, message integrity, the privacy of the entities’ IDs, and checking the entities’ availability. A formal verification tool (ProVerif) is used to validate the proposed protocol’s security robustness through two main steps. Firstly, coding of the proposed protocol using ProVerif syntax. Secondly, performing the analysis of the attack trace for the failure queries.
提出了一种新的智能公共交通系统(IPTS)安全通信方案。提出的方案生成一个加密密钥,并旨在在ATSoI的参与者实体之间安全地共享该密钥。它减轻了几个网络威胁,例如;DoS攻击、重放攻击、中间人攻击以及在此类协作系统中发生可能性较大的窃听活动。此外,它依赖于nonce而不是时间戳来避免时间同步问题。因此,它提供了相互身份验证、机密性、消息完整性、实体id的隐私性以及检查实体的可用性。一个正式的验证工具(ProVerif)通过两个主要步骤来验证所提议的协议的安全健壮性。首先,使用ProVerif语法对所提出的协议进行编码。其次,对失败查询的攻击轨迹进行分析。
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引用次数: 1
Packet Drop Probability-Optimal Cross-layer Scheduling: Dealing with Curse of Sparsity using Prioritized Experience Replay 丢包概率-最优跨层调度:使用优先体验重放处理稀疏性诅咒
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473857
M. Sharma, P. Tan, E. Kurniawan, Sumei Sun
In this work, we develop a reinforcement learning (RL) based model-free approach to obtain a policy for joint packet scheduling and rate adaptation, such that the packet drop probability (PDP) is minimized. The developed learning scheme yields an online cross-layer scheduling policy which takes into account the randomness in packet arrivals and wireless channels, as well as the state of packet buffers. Inherent difference in the time-scales of packet arrival process and the wireless channel variations leads to sparsity in the observed reward signal. Since an RL agent learns by using the feedback obtained in terms of rewards for its actions, the sample complexity of RL approach increases exponentially due to resulting sparsity. Therefore, a basic RL based approach, e.g., double deep Q-network (DDQN) based RL, results in a policy with negligible performance gain over the state-of-the-art schemes, such as shortest processing time (SPT) based scheduling. In order to alleviate the sparse reward problem, we leverage prioritized experience replay (PER) and develop a DDQN-based learning scheme with PER. We observe through simulations that the policy learned using DDQN-PER approach results in a 3-5% lower PDP, compared to both the basic DDQN based RL and SPT scheme.
在这项工作中,我们开发了一种基于强化学习(RL)的无模型方法来获得联合数据包调度和速率自适应的策略,从而使丢包概率(PDP)最小化。所开发的学习方案产生了一种在线跨层调度策略,该策略考虑了数据包到达和无线信道的随机性以及数据包缓冲区的状态。数据包到达过程的固有时间尺度差异和无线信道变化导致观察到的奖励信号稀疏。由于RL代理通过使用从其行为的奖励方面获得的反馈来学习,因此RL方法的样本复杂性由于产生的稀疏性而呈指数增长。因此,基于RL的基本方法,例如,基于双深度q网络(DDQN)的RL,与最先进的方案(如基于最短处理时间(SPT)的调度)相比,产生的策略性能增益可以忽略不计。为了缓解稀疏奖励问题,我们利用优先体验重放(PER)并开发了一个基于ddqn的PER学习方案。我们通过模拟观察到,与基本的基于DDQN的RL和SPT方案相比,使用DDQN- per方法学习的策略的PDP降低了3-5%。
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引用次数: 1
Accuracy and Generalization of Deep Learning Applied to Large Scale Attacks 深度学习在大规模攻击中的准确性和泛化
Pub Date : 2021-06-01 DOI: 10.1109/ICCWorkshops50388.2021.9473824
Christopher B. Freas, Dhara Shah, Robert W. Harrison
Distributed denial of service attacks threaten the security and health of the Internet. Remediation relies on up-to-date and accurate attack signatures. Signature-based detection is relatively inexpensive computationally. Yet, signatures are inflexible when small variations exist in the attack vector. Attackers exploit this rigidity by altering their attacks to bypass the signatures. Our previous work revealed a critical problem with conventional machine learning models. Conventional models are unable to generalize on the temporal nature of network flow data to classify attacks. We thus explored the use of deep learning techniques on real flow data. We found that a variety of attacks could be identified with high accuracy compared to previous approaches. We show that a convolutional neural network can be implemented for this problem that is suitable for large volumes of data while maintaining useful levels of accuracy.
分布式拒绝服务攻击威胁着互联网的安全和健康。补救依赖于最新和准确的攻击签名。基于签名的检测在计算上相对便宜。然而,当攻击向量中存在微小变化时,签名是不灵活的。攻击者通过改变攻击绕过签名来利用这种刚性。我们之前的工作揭示了传统机器学习模型的一个关键问题。传统的模型不能泛化网络流数据的时间特性来对攻击进行分类。因此,我们探索了在真实流量数据上使用深度学习技术。我们发现,与以前的方法相比,可以以较高的准确率识别各种攻击。我们证明了卷积神经网络可以实现这个问题,它适用于大量数据,同时保持有用的精度水平。
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引用次数: 0
期刊
2021 IEEE International Conference on Communications Workshops (ICC Workshops)
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