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Integrated Sensing and Communication Enabled Multiple Beamwidth and Power Allocation for Connected Automated Vehicles

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China Communications 2023年第9期20卷 46-58页

作者： Shengnan Liu Qianyi Hao qixun zhang Jiaxiang Liu Zheng Jiang China Telecom Corporation Limited Beijing Research Institute Beijing 102209China School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

Connected autonomous vehicles(CAVs)are a promising paradigm for implementing intelligent transportation ***,in CAVs scenarios,the sensing blind areas cause serious safety *** vehicle-to-vehicle(V2V)technology is difficult to break through the sensing blind area and ensure reliable sensing *** overcome these problems,considering infrastructures as a means to extend the sensing range is feasible based on the integrated sensing and communication(ISAC)*** mmWave base station(mmBS)transmits multiple beams consisting of communication beams and sensing *** sensing beams are responsible for sensing objects within the CAVs blind area,while the communication beams are responsible for transmitting the sensed information to the *** reduce the impact of inter-beam interference,a joint multiple beamwidth and power allocation(JMBPA)algorithm is *** maximizing the communication transmission rate under the sensing *** proposed non-convex optimization problem is transformed into a standard difference of two convex functions(D.C.)***,the superiority of the *** average transmission rate of communication beams remains over 3.4 Gbps,showcasing a significant improvement compared to other ***,the satisfaction of sensing services remains steady.

关键词： integrated sensing and communication connected automated vehicles resource allocation in wireless networks

Cognitive information metrics for cognitive wireless networks

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Chinese Science Bulletin 2014年第17期59卷 2057-2064页

作者： Zhiyong Feng Zhiqing Wei qixun zhang Ping zhang Key Laboratory of Universal Wireless Communications Ministry of EducationWireless Technology Innovation Institute (WTI)Beijing University of Posts and Telecommunications

Considering the dynamic changes and uncertainty features of the radio environment in cognitive wireless networks(CWNs),the environment cognition ability is critical for the performance evaluation of CWNs design and ***,there are no effective metrics to evaluate the ability and gain of information cognition in CWNs from an information theory ***,the novel cognitive information concept is proposed and defined as a metric to evaluate the uncertainty of both the internal and external environments of one system that can be removed by other systems or nodes using cognitive radio *** an intelligent wireless communication system that is aware of its surrounding radio,network,and user multi-domains environment,the more cognitive information it achieves,the higher level cognitive capability it *** this paper,we define and analyze the mathematical features of cognitive *** reveal that the increase of cognitive information can improve the spectrum efficiency and reduce the interference probability simultaneously in *** cognitive information can be regarded as a metric for CWNs ***,we apply the theory of cognitive information in the parameters optimization in energy detection and cooperative spectrum sensing.

关键词：信息理论无线网络度量无线通信系统无线电环境高频谱效率认知能力参数优化

Fractal theory based dynamic mesh grouping scheme for efficient cognitive pilot channel design

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Chinese Science Bulletin 2012年第28期57卷 3684-3690页

作者： FENG ZhiYong WEI ZhiQing zhang qixun zhang Ping Wireless Technology Innovation Institute(WTI) Key Laboratory of Universal Wireless CommunicationsMinistry of EducationBeijing University of Posts and TelecommunicationsBeijing 100876China

As one of the key characteristics in cognitive wireless networks(CWNs),network environment awareness techniques have received much attention *** of traditional spectrum sensing technology that suffers from problems of miss detection,false alarm,hidden node,and inefficiency,cognitive pilot channel(CPC) technology has been proposed as one of the candidate solutions for an efficient and accurate network information delivery scheme to user equipment(UE).The aim of the CPC technology is to provide the necessary information for the reconfiguration of the UE using the public signaling *** ensure the efficient information delivery,the whole geographical area covered by the CPC is divided into square meshes of the same ***,two typical network information transmission modes for CPC deployment are also proposed:broadcast CPC mode and on-demand CPC *** further improve the efficiency of network information delivery,an efficient dynamic mesh grouping scheme has been designed which is based on the fractal theory for the broadcast CPC mode,where adaptive rectangular sized meshes are used to approximately cover the whole *** to the traditional fixed size mesh division strategy,results show that the proposed dynamic mesh grouping scheme significantly reduces the number of meshes by grouping similar meshes together,and the average delay of receiving CPC information on the UE side is therefore reduced.

关键词：分形理论导频信道动态网分组设计无线网络信息传送方形网格

Reconfiguration decision making in cognitive wireless network

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Chinese Science Bulletin 2012年第28期57卷 3713-3722页

作者： zhang Ping HE Qian FENG ZhiYong zhang qixun Wireless Technology Innovation Institute(WTI) Key Laboratory of Universal Wireless Communications of Ministry of Education Beijing University of Posts and TelecommunicationsBeijing 100876China

Facing the challenges of dynamic adaptation capabilities in the time-varying environment of cognitive wireless networks(CWNs),we introduce reconfiguration capabilities that flexibly and dynamically adapt to changing wireless environments and service *** an essential characteristic of CWNs,the cognitive reconfiguration can meet user requirements,realize interoperability between heterogeneous networks,make full use of radio resources and adapt to time-varying environments to achieve end-to-end ***,the reconfiguration implementation is still challenging due to the need for complex environment cognition,multi-objective optimization,autonomic decision-making and end-to-end requirement *** an intelligent technology for solving complex issues,we apply adaptive neuro-fuzzy inference system(ANFIS) techniques in this paper to address these challenges in cognitive reconfiguration for self-learning and optimal decision making based on multi-domain cognition ***,this paper designs a generic ANFIS cognitive reconfiguration system including three functional entities,which are the context management module,multi-domain database and ANFIS optimization ***,numerous results prove the effective performance improvements of the ANFIS based reconfiguration solution in CWN for global end-to-end goals.

关键词：配置系统优化决策无线网络自适应神经模糊推理系统 ANFIS 适应能力时间变化网络环境

Sensing-Assisted Accurate and Fast Beam Management for Cellular-Connected mmWave UAV Network

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China Communications 2024年第6期21卷 271-289页

作者： Cui Yanpeng zhang qixun Feng Zhiyong Qin Wen Zhou Ying Wei Zhiqing zhang Ping School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China School of Computer Science Northwestern Polytechnical UniversityXi’an 710072China

Beam management,including initial access(IA)and beam tracking,is essential to the millimeter-wave Unmanned Aerial Vehicle(UAV)***,the conventional communicationonly and feedback-based schemes suffer a high delay and low accuracy of beam alignment,since they only enable the receiver to passively“hear”the information of the transmitter from the radio *** paper presents a novel sensing-assisted beam management approach,the first solution that fully utilizes the information from the visual domain to improve communication *** employ both integrated sensing and communication and computer vision techniques and design an extended Kalman filtering method for beam tracking and ***,we also propose a novel dual identity association solution to distinguish multiple UAVs in dynamic ***-world experiments and numerical results show that the proposed solution outperforms the conventional methods in IA delay,association accuracy,tracking error,and communication performance.

关键词： beam management integrated sensing and communication UAV communication

Intelligent and efficient development of wireless networks:A review of cognitive radio networks

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Chinese Science Bulletin 2012年第28期57卷 3662-3676页

作者： zhang Ping LIU Yang FENG ZhiYong zhang qixun LI Qian XU Ding Wireless Technology Innovation Institute(WTI) Key Laboratory of Universal Wireless CommunicationsMinistry of EducationBeijing University of Posts and TelecommunicationsBeijing 100876China

Facing the challenges on how to improve spectrum efficiency and how to realize heterogeneous network convergence in future wireless networks,a cognitive radio network(CRN) is proposed as one of the *** has become a major research topic in recent years and it is timely to give an overview of the development of CRN and to summarize key issues and *** fundamental concepts of CRN,including the cognitive cycle model,the network architecture,and the cognitive ability and intelligent decision functions,are introduced in detail based on recent *** issues for each topic,followed with recent research on theory and method,are then classified and the industrialization developments of CRN testbeds based on TD-LTE cellular system and standards are briefly ***,conclusions are reached on the perspectives and directions of future development.

关键词：无线电网络无线网络智能移动通信系统高频谱效率产业化发展 CRN 网络融合

Neighboring AP discovery and information exchange methods in Plug-and-Play WLAN system

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High Technology Letters 2008年第3期14卷 225-231页

作者：梁立涛 Wang Lei zhang qixun Feng Zhiyong Yu Yifan Bai Yong Chen Lan School of Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R. China NTF-DoCoMo Beijing Communication Labs Beijing 100080 P. R. China

To overcome the problem of existing neighboring access point （AP） discovery methods in WLAN, for example they （PnP） of mul proposed. Us can not provide the accurate neighboring APs information needed for the Plug-and-Play ti-mode APs, three kinds of neighboring AP discovery and information exchange methods are ing these three neighboring AP discovery methods, passive discovery method, active discovery method and station assistant discovery method, the multi-mode AP can discover all neighboring APs and obtain needed information. We further propose two whole process flows, which combine three discovery methods in different manner, to achieve different goals. One process flow is to discover the neighboring AP as fast as possible, called fast discovery process flow. The other is to discover the neighboring AP with minimal interference to neighboring and accuracy of the method is confirmed APs, called the minimal interference process flow. The validity by the simulation.

关键词： Plug-and-Play access point auto-configuration neighboring AP discovery WLAN

Architecture for Cellular Enabled Integrated Communication and Sensing Services

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China Communications 2023年第9期20卷 59-77页

作者： Bo Liu qixun zhang Zheng Jiang Dongsheng Xue Chenlong Xu Bowen Wang Xiaoming She Jinlin Peng School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China China Telecom Corporation Limited Beijing Research Institute Beijing 102209China Artificial Intelligence Research Center National Innovation Institute of Defense TechnologyBeijingChina

There is growing interest in the integrated sensing and communication(ISAC)to extend the 5G+/6G network capabilities by introducing sensing *** the solutions for mono-static or bi-static ISAC have shown feasibility and benefits based on existing 5G physical layer design,whether and how to coordinate multiple ISAC devices to better exert networking performance are rarely discussed.3 rd Partnership Project(3GPP)has initiated the ISAC use cases study,and the follow-up studies for network architecture could be *** this article,we focus on gNB-based sensing mode and propose ISAC functional framework with given of highlevel service procedures to enable cellular based ISAC *** the proposed ISAC framework,three types of network functions for sensing service as Sensing Function(SF),lightweight-Edge Sensing Function(ESF)and full-version-ESF are designed with interaction with network nodes to fulfill the latency requirements of ISAC use ***,with simulation evaluations and hardware testbed results,we further verify the performance benefit and feasibility to enable ISAC in 5G for the gNB-based sensing mode with new design on SF and related signaling protocols.

关键词： integrated sensing and communication(ISAC) network architecture 5G system

Approach to Anomaly Detection in Microservice System with Multi-Source Data Streams

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ZTE Communications 2022年第3期20卷 85-92页

作者： zhang qixun HAN Jing CHENG Li zhang Baisheng GONG Zican Peking University Beijing 100091China ZTE Corporation Shenzhen 518057China

Microservices have become popular in enterprises because of their excellent scalability and timely update ***,while fine-grained modularity and service-orientation decrease the complexity of system development,the complexity of system operation and maintenance has been greatly increased,on the *** types of system failures occur frequently,and it is hard to detect and diagnose failures in ***,microservices are updated *** anomaly detection models depend on offline training and cannot adapt to the frequent updates of *** paper proposes an anomaly detection approach for microservice systems with multi-source data *** approach realizes online model construction and online anomaly detection,and is capable of self-updating and *** results show that this approach can correctly identify 78.85%of faults of different types.

关键词： anomaly detection data stream microservice monitored indicator system log