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Fairness-Aware Incentive Mechanism for Multi-Server Federated Learning in Edge-Enabled Wireless Networks with Differential Privacy

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IEEE Transactions on Mobile Computing 2025年

作者： Yang, Yu Peng, Kai Wang, Shangguang Xu, Xiaolong Xiao, Peiyun Leung, Victor C.M Huaqiao University College of Engineering Quanzhou362021 China Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing100876 China Nanjing University of Information Science and Technology School of Software Nanjing China Nanjing University State Key Lab. for Novel Software Technology Nanjing210093 China Shenzhen University College of the Computer Science and Software Engineering Shenzhen518060 China University of British Columbia Department of Electrical and Computer Engineering VancouverBCV6T 1Z4 Canada

As a distributed machine learning method, federated learning (FL) can collaboratively train a global model with multiple devices without sharing the original data, thus protecting certain privacy. However, due to the strong heterogeneity of edge nodes (ENs) participating in FL, the quality of data uploaded to the parameter server (PS) varies significantly. Without an appropriate incentive mechanism, low-quality contributors may receive disproportionately high rewards, while high-quality contributors may lack sufficient motivation, leading to inefficient participation and suboptimal global model performance. Consequently, it is critical to develop an effective incentive mechanism to promote fairness for the FL process. To address the issues of existing FL incentive mechanisms lacking privacy protection performance analysis, we propose a fairness-aware incentive mechanism for multi-server FL in edge-enabled wireless differential privacy (DP) networks. Specifically, the wireless channel noise is used to provide DP protection for the local model gradients uploaded by ENs. Next, the interaction between the PSs and ENs is modeled as a Stackelberg game. Furthermore, we solve the Stackelberg game process using backward induction and theoretically propose optimal strategies for both the PSs and ENs. Finally, extensive numerical simulations using real datasets demonstrate the superior performance of our theoretical analysis of the proposed scheme. © 2002-2012 IEEE.

关键词： Federated learning

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Safeguarding NOMA Networks via Reconfigurable Dual-Functional Surface Under Imperfect CSI

Safeguarding NOMA Networks via Reconfigurable Dual-Functiona...

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作者： Wang, Wen Ni, Wanli Tian, Hui Yang, Zhaohui Huang, Chongwen Wong, Kai-Kit Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing100876 China Zhejiang University College of Information Science and Electronic Engineering Zhejiang Hangzhou310027 China Zhejiang Provincial Key Lab of Information Processing Hangzhou Zhejiang310007 China Hangzhou Zhejiang310027 China University College London Department of Electronic and Electrical Engineering LondonWC1E 6BT United Kingdom

This paper investigates the use of the reconfigurable dual-functional surface to guarantee the full-space secure transmission in non-orthogonal multiple access (NOMA) networks. In the presence of eavesdroppers, the downlink communication from the base station to the legitimate users is safeguarded by the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS), where three practical operating protocols, namely energy splitting (ES), mode selection (MS), and time splitting (TS), are studied. The joint optimization of power allocation, active and passive beamforming is investigated to maximize the secrecy energy efficiency (SEE), taking into account the imperfect channel state information (CSI) of all channels. For ES, by approximating the semi-infinite constraints with the S-procedure and general sign-definiteness, the problem is solved by an alternating optimization framework. Besides, the proposed algorithm is extended to the MS protocol by solving a mixed-integer non-convex problem. While for TS, a two-layer iterative method is proposed. Simulation results show that: 1) The proposed STAR-RIS assisted NOMA networks are able to provide up to 33.6% higher SEE than conventional RIS counterparts;2) TS and ES protocols are generally preferable for low and high power domain, respectively;3) The accuracy of CSI estimation and the bit resolution power consumption are crucial to reap the SEE benefits offered by STAR-RIS. © 2007-2012 IEEE.

关键词： Energy efficiency

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An Accurate IEEE 802.11 Packet Delay Model for Single-hop UAV Networks

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IEEE Transactions on Vehicular technology 2025年

作者： Wei, Yayun Zhou, Zihao Tang, Jie Zhao, Nan Qin, Xiaoqi Wong, Kai-Kit South China University of Technology School of Electronic and Information Engineering Guangzhou510641 China Dalian University of Technology School of Information and Communication Engineering Dalian116024 China Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing100876 China University College London Department of Electronic and Electrical Engineering Torrington Place WC1E 7JE United Kingdom Yonsei University Yonsei Frontier Lab Seoul Korea Republic of

An accurate packet delay model for the IEEE 802.11 single-hop UAV networks is proposed. Unlike most existing models that assume a fully connected network, this study considers a more practical UAV network with partial connectivity along with a realistic reception model. A closed-form expression for average packet delay is derived based on Markov chain model. The impact of network size, packet generation rate, and initial contention window size on average packet delay is evaluated. Simulation results validate the accuracy of the proposed analytical model. © 1967-2012 IEEE.

关键词： Unmanned aerial vehicles (UAV)

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STAR-RIS Integrated Non-Orthogonal Multiple Access and Over-the-Air Federated Learning: Framework, Analysis, and Optimization

arXiv

引用

arXiv 2021年

作者： Ni, Wanli Liu, Yuanwei Eldar, Yonina C. Yang, Zhaohui Tian, Hui State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing100876 China School of Electronic Engineering and Computer Science Queen Mary University of London LondonE1 4NS United Kingdom Faculty of Mathematics and Computer Science Weizmann Institute of Science Rehovot7610001 Israel Zhejiang Lab Hangzhou31121 China College of Information Science and Electronic Engineering Zhejiang University Zhejiang Hangzhou310027 China Zhejiang Hangzhou310007 China

This paper integrates non-orthogonal multiple access (NOMA) and over-the-air federated learning (AirFL) into a unified framework using one simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS). The STAR-RIS plays an important role in adjusting the decoding order of hybrid users for efficient interference mitigation and omni-directional coverage extension. To capture the impact of non-ideal wireless channels on AirFL, a closed-form expression for the optimality gap (a.k.a. convergence upper bound) between the actual loss and the optimal loss is derived. This analysis reveals that the learning performance is significantly affected by the active and passive beamforming schemes as well as wireless noise. Furthermore, when the learning rate diminishes as the training proceeds, the optimality gap is explicitly shown to converge with linear rate. To accelerate convergence while satisfying quality-of-service requirements, a mixed-integer non-linear programming (MINLP) problem is formulated by jointly designing the transmit power at users and the configuration mode of STAR-RIS. Next, a trust region-based successive convex approximation method and a penalty-based semidefinite relaxation approach are proposed to handle the decoupled non-convex subproblems iteratively. An alternating optimization algorithm is then developed to find a suboptimal solution for the original MINLP problem. Extensive simulation results show that i) the proposed framework can efficiently support NOMA and AirFL users via concurrent uplink communications, ii) our algorithms achieve faster convergence rate on IID and non-IID settings compared to existing baselines, and iii) both the spectrum efficiency and learning performance is significantly improved with the aid of the well-tuned STAR-RIS. Copyright © 2021, The Authors. All rights reserved.

关键词： Quality of service

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Construction and Practice of Cloud-based Experiment and Innovation Project Supporting Platform for Computer Science Education

Construction and Practice of Cloud-based Experiment and Inno...

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China-Europe International Symposium on Software Engineering Education(CEISEE 2018)(第十四届中欧软件工程教育国际研讨会)

作者： Peng Xu Hui Cai Jian Kuang Xiaoyan Zhang State Key Lab of Networking and 1Switching Technology Beijing University of Posts and Telecommunicat State Key Lab of Networking and Switching Technology Beijing University of Posts and Telecommunicati School of Software Beijing University of Posts and TelecommunicationsBeijing 100876China

Higher and more requirements on experiments and innovation projects of computer science courses is brought forward to promote the"Double First Class".For these *** cloud-based experiment and innovation project supporting platform is introduced in this *** the one *** platform could satisfy the diversified resource requirements of both teachers and students in course experiments and innovation *** the other *** feature of”construct once and access anywhere“could achieve higher resource utilization rate and lower costs than the traditional“lab-based”experiment *** supporting platform has been applied to practice and gains a lot of positive feedbacks.

关键词： experiment innovation project cloud computing course computing science

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Overview of millimeter wave communications for fifth-generation (5g) wireless networks-with a focus on propagation models

arXiv

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arXiv 2017年

作者： Rappaport, Theodore S. Unchou, Xing MacCartney, George R. Molisch, Andreas F. Mellios, Evangelos Zhang, Jianhua NYU WIRELESS Research Center Ming Hsieh Department of Electrical Engineering University of Southern California Los AngelesCA90089 United States Communication Systems & Networks Group University of Bristol Merchant Venturers Building Woodland Road BristolBS8 1UB United Kingdom State Key Lab of Networking and Switching Technology Beijing University of Posts and Telecommunications Mailbox NO.92 100876 China

—This paper provides an overview of the features of fifth generation (5G) wireless communication systems now being developed for use in the millimeter wave (mmWave) frequency bands. Early results and key concepts of 5G networks are presented, and the channel modeling efforts of many international groups for both licensed and unlicensed applications are described here. Propagation parameters and channel models for understanding mmWave propagation, such as line-of-sight (LOS) probabilities, large-scale path loss, and building penetration loss, as modeled by various standardization bodies, are compared over the 0.5-100 GHz range. Copyright © 2017, The Authors. All rights reserved.

关键词： 5G mobile communication systems

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A Game Theory of Cloud Service Deployment

A Game Theory of Cloud Service Deployment

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IEEE World Congress on Services (SERVICES)

作者： Zexiang Mao Jingqi Yang Yanlei Shang Chuanchang Liu Junliang Chen line 1(State Key Lab of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China

As cloud-based services become more numerous and dynamic, service deployment becomes more and more challenging. For the reason of economic, the service deployment strategy is crucial for maximize the system utility and profit gained. In this paper, considered both the cost and quality, the service deployment in cloud is modeled as a congestion game, where every service has several components is considered as a player and his strategy is to select the subset of resources to deploy his components. Based on the congestion game, a game theoretic method is proposed to optimize both the overall cost and quality. To solve the congestion game, efficient algorithms are proposed to achieve the equilibrium in polynomial time.

关键词： Games Nash equilibrium Cloud computing Equations Mathematical model Computational modeling

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Model for cascading network failures based on the nodes with different tolerance parameter

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The Journal of China Universities of Posts and Telecommunications 2011年第5期18卷 95-101页

作者： LIU Yuan-ni LI Xin CHEN Shan-zhi QIN Zhen State key Lab of Switching and Networking Technology Beijing University of Posts and Telecommunications Beijing 100876 China State key Lab of W1reless Mobile Communication China Academy of Telecommunication Technology Beijing 100083 China School of Lifesciences and Technology Xidian University Xi＇an 710126 China

Cascading failures are common in most of the networks, where traffic is rerouted to bypass malfunctioning routers, eventually leading to an avalanche of overloads on other routers that are not equipped to handle extra traffic, which can result in a congestion regime with degradation in the network performance. In order to investigate how a small shock can trigger avalanches mechanisms affecting a considerable fraction of the network, lots of failure models have been constructed, but they have focused only on the static properties of the network that can not reflect the performance affected by the avalanche exactly. In this paper, we proposed a simple model for cascading failures in the network to explore how the failures can have a great impact on the network performance, and we allocated every node a capacity by tolerance parameter based on the node importance, which is determined by node degree, the number of the shortest paths through a node, and the number of the shortest paths through the neighbors of a node, then we fixed every element a weight to compute the node importance by analytic hierarchy process （AHP） theory. Based on our model, we analyzed the influence of different types of attacks to the network performance, and also tabled some proposals for reducing the damage that the networks suffered from the cascading failures.

关键词： cascading failure power-law tolerance parameter network efficiency

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Decreased routing path based on a dynamic prediction algorithm for mobile sink in WSN

Decreased routing path based on a dynamic prediction algorit...

引用

China-Ireland International Conference on Information and Communications Technologies, CIICT 2007

作者： Jiao, Weiwei Xie, Dongliang Yu, Wenbin Ma, Jian Cheng, Shiduan State Key Lab of Networking and Switching Technology Beijing University of Posts and Communications Beijing 100876 China Nokia Research Center Beijing Nokia House 1 No.11 He Ping Li Dong Jie Beijing 100013 China

ISBN: (纸本)9780863418273

An algorithm relevant to prediction for mobile sink in wireless sensor networks is specified in this paper, through which a comparison of the number of hops, from sensor nodes to the sink, is made with and without utilization of prediction respectively. In this paper, the structure and implementation of the algorithm are presented. Furthermore, based on the analysis with the error margin caused while in usage of prediction algorithm, the simulation results validated that the network performance could be improved effectively because of the decrease of the number of hops it brings.

关键词： Forecasting

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The mobility pattern of sink in event-driven wireless sensor networks

The mobility pattern of sink in event-driven wireless sensor...

引用

China-Ireland International Conference on Information and Communications Technologies, CIICT 2007

作者： Wang, Bin Xie, Dongliang Ma, Jian Cheng, Shiduan State Key Lab of Networking and Switching Technology Beijing University of Posts and Communications Beijing 100876 China Nokia Research Center Beijing Nokia House 1 No.11 He Ping Li Dong Jie Beijing 100013 China

ISBN: (纸本)9780863418273

Optimizing energy consumption and event delivery delay are both important in event-driven multi-hop wireless sensor networks. In this paper, a novel avenue of balancing the two performance met-rics based on predictable mobility of the sink was explored. We focus on an analytical model for understanding performance as system and mobility parameters are scaled. And based on the model, the theoretical analysis and the simulation results validate our statements.

关键词： Wireless sensor networks

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