Article
Engineering, Electrical & Electronic
Claudio Paoloni
Summary: In order for the future 5G and 6G technologies to be successful, a ubiquitous data source is needed to increase the area capacity of the wireless distribution layer.
IEEE COMMUNICATIONS MAGAZINE
(2021)
Article
Engineering, Electrical & Electronic
Yaqian Zhang, Junyu Liu, Min Sheng, Yan Shi, Jiandong Li
Summary: In this study, the performance of small cell networks with wireless backhaul in terms of network spatial throughput is comprehensively investigated. It is found that over-provision of backhaul can lead to degradation of network performance, and a joint optimization of base station and gateway densities is proposed to improve network spatial throughput.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Computer Science, Hardware & Architecture
Junkai Zhang, Navneet Garg, Mark Holm, Tharmalingam Ratnarajah
Summary: This article introduces a key technology for future cellular networks - full duplex millimeter-wave integrated access and backhaul networks, discussing methods to mitigate the impact of self-interference to improve spectral efficiency.
IEEE WIRELESS COMMUNICATIONS
(2021)
Article
Computer Science, Hardware & Architecture
Shashi Ranjan, Pranav Jha, Abhay Karandikar, Prasanna Chaporkar
Summary: This paper presents a QoS-based downlink scheduler designed specifically for IAB networks, which takes into account the multihop relaying topology, QoS requirements, and backhaul constraints to fulfill QoS requirements for different types of services and maintain fairness among QoS flows belonging to the same service type.
Article
Computer Science, Hardware & Architecture
Yuchen Liu, Douglas M. Blough
Summary: This paper investigates the application of mmWave communication in wireless backhaul and introduces a more robust topology to address frequent communication outages. By introducing four blockage models and stochastic geometry, mechanisms for tolerating blockages are proposed and evaluated through extensive simulations.
Article
Computer Science, Hardware & Architecture
Zhongyu Ma, Jie Cao, Qun Guo, Xiangwei Li, Hongfeng Ma
Summary: The millimeter-wave mesh backhaul network is a crucial technology for massive traffic backhaul in 5G networks, and a QoS-oriented joint optimization of concurrent scheduling and power control has been proposed to address the challenge of high capacity and green backhaul solutions. By formulating a mixed integer nonlinear programming problem and developing a heuristics and energy-efficient backhaul mechanism, the issue of reducing energy consumption while enhancing the number of successfully transmitted flows has been tackled. Through extensive simulations, the proposed mechanism, HEBM, has been shown to outperform state-of-the-art methods under various traffic modes and system parameters.
JOURNAL OF NETWORK AND COMPUTER APPLICATIONS
(2021)
Article
Telecommunications
L. Manjunath, N. Prabakaran
Summary: The paper introduces a hybrid communication framework using cache-enabled technology, heuristic search models, and cluster head selection to address interference issues and maximize throughput rate and energy savings. The effectiveness of the framework is validated through simulation analysis.
WIRELESS PERSONAL COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Randy Verdecia-Pena, Rodolfo Oliveira, Jose I. Alonso
Summary: In this paper, we propose a hardware implementation for the out-of-band Integrated Access and Backhaul (IAB) network, which is a solution for coverage extension and capacity boosting in 5G and beyond networks. We design and develop an easy-to-use out-of-band mmWave Layer 2 protocol using an Ettus x310 SDR board, Pasternack's 60 GHz Transmitter (Tx) waveguide module, and Matlab software. The proposed protocol decodes a FR1 5G signal as input at 3.5 GHz and retransmits it to the UE as a FR2 5G signal at 60 GHz. Experimental results show that the proposed Layer 2 protocol performs similarly to off-the-shelf equipment and achieves the best performance when the PNC algorithm is used in the IAB architecture.
Article
Engineering, Electrical & Electronic
Jintao Wang, Xiaohui Zhang, Xu Shi, Jian Song
Summary: In the new 5G era, millimeter wave communications can achieve huge data rate growth and wide bandwidth with a hybrid precoding architecture, effectively optimizing the system's spectral efficiency through the design of digital and analog precoders. The use of index modulation (IM) techniques can further improve spectral efficiency in mmWave systems. Simulation results demonstrate that IM-aided systems outperform traditional mmWave systems, making IM a promising technique for practical SE-driven mmWave systems.
IEEE COMMUNICATIONS MAGAZINE
(2021)
Article
Computer Science, Information Systems
Quang-Huy Tran, Tho-Minh Duong, Sungoh Kwon
Summary: This paper proposes a graph-based load balancing algorithm for small-cell integrated access and backhaul (IAB) networks. The algorithm estimates and adapts to network load status to tackle the unbalanced load problem. The simulation results show that the proposed algorithm distributes the load more evenly, increasing network throughput and UE satisfaction.
Article
Telecommunications
Yi Zhang, Shuai Han, Weixiao Meng, Xunan Li, Yue Chen
Summary: This paper investigates the performance and interference cancellation schemes of a full-duplex millimeter wave multiuser integrated access and backhaul system with massive MIMO. The system utilizes baseband precoding to suppress multiuser interference, and proposes two interference suppression precoding schemes for different interference levels.
CHINA COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Syed Hassan Raza Naqvi, Pin-Han Ho
Summary: This article introduces a novel mmWave access architecture called mmWave over cable (mmWoC) for effective indoor coverage, using local area network cables to relay frequency-converted signals. By developing a precoding process and rate analysis, as well as investigating a resource mapping scheme, the feasibility of this architecture is demonstrated.
IEEE SYSTEMS JOURNAL
(2021)
Article
Computer Science, Information Systems
Darko Cvetkovski, Tim Haelsig, Berthold Lankl, Eckhard Grass
Summary: This study presents experimental results for a four-stream spatial multiplexing setup in a line-of-sight (LoS) wireless backhaul scenario at 60 GHz, demonstrating a highly orthogonal wireless channel with optimal antenna arrangement. Two different equalizers are introduced and evaluated in terms of error vector magnitude (EVM) performance and bandwidth efficiency, achieving error-free transmission with a throughput of 14.08 Gbit/s and validating the practical suitability of LoS MIMO for wireless backhaul applications.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Computer Science, Hardware & Architecture
M. Luglio, M. Quadrini, C. Roseti, F. Zampognaro
Summary: The emergence of 5G mobile networks has met the needs of network services, especially for various users and different applications. This article proposes a flexible web traffic generator tool that aims to simulate the dynamics of real applications and user interactions and inject them into real networks for testing and performance evaluation. The tool can help optimize 5G network configurations, providing a set of key performance indicators and running under different configurations, demonstrating its flexibility and practicality.
Article
Computer Science, Information Systems
Tania Ferreira, Alexandre Figueiredo, Duarte Raposo, Miguel Luis, Pedro Rito, Susana Sargento
Summary: Wireless backhaul is crucial for 5G technology, providing a cost-effective and scalable alternative to fiber backhaul. The WiGig protocols, particularly IEEE 802.11ad and 802.11ay, offer high bandwidth and fiber-like data rates, making them suitable for 5G backhaul. However, the mmWave band used by WiGig suffers from high propagation loss and requires highly directional antennas, making it more susceptible to blockage and errors.
Article
Computer Science, Information Systems
Yibing Wang, Hao Wu, Yong Niu, Jianwen Ding, Shiwen Mao, Bo Ai, Zhangdui Zhong, Ning Wang
Summary: With the cooperation of three different frequency bands, this paper proposes a triple-band scheduling scheme to support traffic flows with diverse QoS requirements. Extensive simulations demonstrate the superior performance of the proposed scheme in terms of the number of completed flows and the system throughput.
JOURNAL OF COMMUNICATIONS AND NETWORKS
(2022)
Article
Engineering, Electrical & Electronic
Jing Li, Yong Niu, Hao Wu, Bo Ai, Ruisi He, Ning Wang, Sheng Chen
Summary: To address the issue of explosive growth in mobile traffic, a UAV-aided two-way relaying system is introduced to enhance vehicular connection and expand coverage. Two schemes, random relay selection with concurrent scheduling (RCS) and joint relay selection with dynamic scheduling (JRDS), are proposed to optimize relay selection and transmission scheduling, resulting in significant improvements in transmission time and network throughput compared to existing schemes.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Panpan Li, Yong Niu, Hao Wu, Zhu Han, Bo Ai, Ning Wang, Zhangdui Zhong
Summary: With the rapid development of high-speed railway systems and railway wireless communication, the application of ultra-wideband millimeter wave band is an inevitable trend. However, the millimeter wave channel has large propagation loss and is easy to be blocked. In this paper, we propose a RIS-assisted scheduling scheme to improve the quality of service (QoS), where an RIS is deployed between the base station (BS) and multiple mobile relays (MRs) to achieve constructive interference and guarantee the channel capacity of eavesdroppers within a controllable range. Extensive simulations demonstrate the superior performance of the proposed scheme over four baseline schemes regarding the number of completed flows and the system secrecy capacity.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Chen Chen, Yong Niu, Bo Ai, Ruisi He, Zhu Han, Zhangdui Zhong, Ning Wang, Xiang Su
Summary: This paper proposes a solution to provide mm-wave communication services in future smart high-speed railway systems using intelligent reflecting surface (IRS) technology. By deploying IRS and designing optimization algorithms, system capacity can be improved, and the issues of communication interruption and frequent handovers caused by high-speed trains and complex environments can be addressed.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Computer Science, Information Systems
Qingyuan Li, Hao Wu, Chen Dong
Summary: Ride sharing is an effective way to conserve energy, reduce emissions, and alleviate traffic congestion. However, privacy disclosure is a concern. This research proposes a lightweight privacy-preserving ride matching scheme that utilizes homomorphic encryption to hide location data and calculates user distances securely and efficiently. The scheme selects potential ride share partners based on the feasibility of time schedules, achieving efficient and accurate matching.
Article
Telecommunications
Lei Wang, Bo Ai, Yong Niu, Zhangdui Zhong, Shiwen Mao, Ning Wang, Zhu Han
Summary: The rapid development of high-speed railways has increased the demand for efficient communication systems. Millimeter wave technology offers a promising solution due to its wide bandwidth, narrow beams, and rich spectrum resources. This study proposes a dynamic power-control scheme for train-ground communications using multiple mobile relays. By optimizing transmit power based on the number of relays and distance to the remote radio head, the scheme aims to minimize energy consumption while meeting data transmission requirements.
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING
(2023)
Article
Engineering, Electrical & Electronic
Guiqi Sun, Ruisi He, Yaxin Song, Bo Ai, Shuguang Cui, Yong Niu, Haoxiang Zhang, Zhangfeng Ma, Chau Yuen
Summary: In this article, a three-dimensional one-cylinder model is proposed to investigate the effects of different RIS phases on channel statistical properties. The findings provide guidance for establishing intelligent, safe, and controllable propagation conditions in RIS-aided networks.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Civil
Xiangfei Zhang, Yong Niu, Tao Yang, Xian Xiao, Jianwen Ding, Sheng Chen, Zhangdui Zhong, Ning Wang, Bo Ai
Summary: With the development of wireless communication, people have higher requirements for train-ground communications in high-speed railway scenarios. The application of millimeter-wave communication with mobile relays installed on the train can achieve high data rates and meet users' increasing demands for broadband multimedia access.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Yiru Liu, Bo Ai, Yong Niu, Zhu Han, Zhangdui Zhong, Yuanyuan Qiao, Ning Wang, Gordon L. Stuber
Summary: Higher frequency bands, especially millimeter wave (mmWave), are essential for high-speed railway wireless communication. The use of hybrid analog and digital beamforming (HBF) schemes with large scale antenna arrays (LSAs) can overcome the severe path loss. However, due to the straight rail track, the communication rate between the train and the ground varies significantly. To address this issue, a novel non-uniform beam design is proposed for efficient hybrid beamforming in high-speed railway systems.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Shaoyou Ao, Yong Niu, Zhu Han, Bo Ai, Zhangdui Zhong, Ning Wang, Yuanyuan Qiao
Summary: This paper studies the resource allocation scheme in the RIS-assisted single-cell heterogeneous D2D communication scenario with the goal of maximizing the system sum rate. The resource allocation sub-problem is solved using a coalitional game method, while the power allocation problem and phase conversion problem are solved using the gradient descent method and local search method, respectively. Simulation results demonstrate that the proposed algorithm outperforms other benchmark schemes.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Ming-Min Zhao, Kaidi Xu, Yunlong Cai, Yong Niu, Lajos Hanzo
Summary: Reconfigurable intelligent surfaces (RISs) dynamically adjust their reflection coefficients to achieve high passive beamforming gains, enhancing signals or nulling interference. In this study, we propose a RIS-assisted secure simultaneous wireless information and power transfer (SWIPT) system for information and power transfer. By jointly optimizing the transmit beamforming vectors at the base station (BS) and the phase shifts at the RIS, we aim to maximize the average worst-case secrecy rate achieved by the information user (IU). A smooth approximation aided stochastic successive convex approximation (SA-SSCA) algorithm is proposed to tackle the non-convex and non-smooth optimization problem.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2023)
Article
Computer Science, Information Systems
Meilin Gao, Bo Ai, Yong Niu, Qihao Li, Zhu Han, Zhangdui Zhong, Xuemin Shen, Ning Wang
Summary: This article investigates a high-speed train communication network empowered by intelligent reflecting surfaces (IRSs) and multiple-input-multiple-output (MIMO) technology. By exploiting statistical channel state information (CSI), the impact of fast time-varying fading is mitigated. The system performance is improved by optimizing transceiver beamforming vectors and IRS phase shift matrix. Simulation results show that the IRS-assisted system outperforms the system without IRS in terms of outage probability and ergodic capacity.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Computer Science, Information Systems
Chen Dong, Hao Wu, Qingyuan Li
Summary: As vehicles become more intelligent and connected, the increase in the number of ECUs and communication interfaces raises network security risks. The lack of security mechanisms for the CAN bus network, the main bus in the vehicle, leaves it vulnerable to cyber attacks. To address this, we propose a CAN bus intrusion detection system based on multiple observation HMM for in-vehicle networks. Our algorithm builds HMMs based on normal CAN bus traffic and calculates the existence probability of frames to detect abnormalities. Experimental results demonstrate better detection performance compared to other methods in four attack scenarios.
