Building a Stronger Foundation for Web3:Advantages of 5G Infrastructure

The emergence of Web3 technologies promises to revolutionize the Internet and redefine our interactions with digital assets and applications.This essay explores the pivotal role of 5G infrastructure in bolstering the growth and potential of Web3.By focusing on several crucial aspects—network speed,edge computing,network capacity,security and power consumption—we shed light on how 5G technology offers a robust and transformative foundation for the decentralized future of the Internet.Prior to delving into the specifics,we undertake a technical review of the historical progression and development of Internet and telecommunication technologies.

Study on 5G Application Scenarios in Intelligent High-Speed Railway

5G technology is indispensable for developing comprehensive perception and ubiquitous interconnection of intelligent high-speed railways(HSRs),and can be applied to many scenarios in intelligent construction,intelligent equipment,intelligent operation and in other fields.In order to promote the standardized application of 5G technology in intelligent HSRs in a scientific and orderly manner and to avoid redundant construction and wasteful investment,it is imperative to carry out a systematical top-level design of the application scenarios at the initial stage.To this end,after investigating and analyzing the 5G application demands in different aspects of HSRs and the general structure of the railway 5G network,this paper formulates an overall planning of 5G technology application scenarios and proposes solutions to some typical application scenarios in the intelligent HSR system,based on the architecture and requirements of the intelligent HSR system.

Application and Research of 5G Communication Technology in Intelligent Coal Mine

In recent years,science and technology in China has been developing rapidly,and various industries have begun to undergo changes due to the development.Coal mining i a highly dangerous industry.Therefore,proper technology is needed to improve the quality and safety of coal mining.The application of 5G communication technology allowed for the developement of intelligent coal mines,with broad appication prospects and research value.This article aims to thoroughly analyze the application of 5G ommunication technology in intelligent coal mines,considering the practical context.The goal is to offer insights and guidance for future endeavors in this domain.

Carrying Railway 5G Service Application by Multi-technology Convergence

The application scenarios of railway radio communication are complex,while the existing narrowband communication such as GSM-R and radio train dispatching system fails to meet the requirements of service application development.The carrying capacity of railway 5G-R has been greatly improved,mainly for wide-area train-ground communication services such as dispatching communication,train control and train operation safety monitoring.However,for large passenger stations,freight yards,maintenance bases and other places with densely populated railway operators,it is unable to carry overall railway service applications limited by the spectrum bandwidth of 5G private networks,so it is necessary to consider various radio technologies for supplementation.This paper also elaborates the railway service application scenarios,analyzes the characteristics of radio communication technologies such as 5G mmWave and the 6th-generation wireless LAN technology(Wi-Fi6),and discusses the schemes of multi-technology convergence carrying railway 5G service applications.

Security Application of 5G Technology in Industrial Internet

The application of internet in the industrial field has become an inevitable trend in modern society.In the actual operation,there are possible safety risks.To ensure the system’s proper operation,technicians are required to resolve the issues.In this context,the author thoroughly integrated with the present industrial development situation,examined the use of 5G technology in industrial internet security,and desired to leverage the advantageous benefits of 5G technology to boost industrial development.Due to the numerous benefits of 5G technology in security applications,we conducted an in-depth investigation and described it from the perspectives of relevant concepts,security,and security application guarantee measures,with the goal of achieving the goal of safe industrial internet operation.

MULTI-HOP RELAYING IN 5G： FROM RESEARCH TO SYSTEMS, STANDARDS, AND APPLICATIONS

In recent years,the demands of high traffic transmission motivate the rapid development of wireless access techniques,and it becomes promising to design the fifth generation(5G)wireless networks.Essential requirements for 5G involve higher traffic volume,indoor or hotspot traffic,and spectrum,energy,and cost efficien-

5G通信技术若干关键问题研究

5G移动通信技术作为新一代移动通信系统一直备受关注,未来几年,该技术会进入实质性的发展阶段。随着人们对现代生活品质的要求越来越高,高效、舒适、便捷的智能化生活是人们所向往的。而随着虚拟现实技术、人工智能和物联网的大力发展,智慧城市、智能汽车和远程医疗等先进设备将进入人们的日常生活,"全智能化生活"将在不久的将来得以实现。世界各国都在积极加快5G移动通信技术的发展,5G将给社会的进步和科技发展带来前所未有的推动力。

Application of 5G telesurgery in urology

The fifth generation of mobile communication technology(5G technology)features large system capacity,fast data transmission rate,support for large-scale device connection,low latency,and high reliability.With the development and popularization of 5G technology,it is also widely used in medicine.In recent years,5G telesurgery has been paid attention to and made continuous progress,and the research related to its combination with urology has also made significant achievements.We collect the combination of 5G technology and urology improves the uneven distribution of medical resources,provides timely,highquality remote surgical interventions for urology patients,reduces the financial burden on patients,surgical complications,and the difficulty of accessing medical care from a distance,and brings new opportunities for medical development.

Mobile Edge Computing Towards 5G: Vision, Recent Progress, and Open Challenges

Mobile Edge Computing(MEC) is an emerging technology in 5G era which enables the provision of the cloud and IT services within the close proximity of mobile subscribers.It allows the availability of the cloud servers inside or adjacent to the base station.The endto-end latency perceived by the mobile user is therefore reduced with the MEC platform.The context-aware services are able to be served by the application developers by leveraging the real time radio access network information from MEC.The MEC additionally enables the compute intensive applications execution in the resource constraint devices with the collaborative computing involving the cloud servers.This paper presents the architectural description of the MEC platform as well as the key functionalities enabling the above features.The relevant state-of-the-art research efforts are then surveyed.The paper finally discusses and identifies the open research challenges of MEC.

Research and practice of intelligent coal mine technology systems in China

This study considered the role of coal as China’s basic energy source and examines the development of the coal industry.We focused on the intelligent development of coal mines,and introduced the“Chinese mode”of intelligent mining in underground coal mines,which uses complete sets of technical equipment to propose classifcation and grading standards.In view of the basic characteristics and technical requirements of intelligent coal mine systems,we established a digital logic model and propose an information entity and knowledge map construction method.This involves an active information push strategy based on a knowledge demand model and an intelligent portfolio modeling and distribution method for collaborative control of coal mines.The top-level architecture of 5G+intelligent coal mine systems combines intelligent applications such as autonomous intelligent mining,human–machine collaborative rapid tunneling,unmanned auxiliary transportation,closed-loop safety control,lean collaborative operation,and intelligent ecology.Progress in intelligent mining technology was described in terms of a dynamic modifed geological model,underground 5G network and positioning technology,intelligent control of the mining height and straightness of the longwall working face,and intelligent mining equipment.The development of intelligent coal mines was analyzed in terms of its imbalances,bottlenecks,and the compatibility of large-scale systems.Implementation ideas for promoting the development of intelligent coal mines were proposed,such as establishing construction standards and technical specifcations,implementing classifcation and grading standards according to mining policy,accelerating key technology research,and building a new management and control model.

基于5G的天空地一体化战术通信研究

现有战术通信主要依靠窄带通信技术实现,难以满足战场大量信息的分发需求。利用民用技术加速战术通信的发展已经取得业界的广泛认同,但是移动通信固有的特点使得这一进程非常缓慢。5G移动通信的提出为此提供了一次新的契机。初步探讨5G军用化的可行性,发现利用5G的关键技术并经过特殊设计可以消除/缓解传统移动通信军用化存在的一些障碍;并基于5G提出了一种天空地一体化战术通信网络,为战术通信的未来发展提供了一种新思路。

Frequency-Agile WLAN Notch UWB Antenna for URLLC Applications

This paper introduces a compact dual notched UWB antenna with an independently controllable WLAN notched band integrated with fixed WiMAX band-notch.The proposed antenna utilizes a slot resonator placed in the main radiator of the antenna for fixed WiMAX band notch,while an inverted L-shaped resonator in the partial ground plane for achieving frequency agility within WLAN notched band.The inverted L-shaped resonator is also loaded with fixed and variable capacitors to control and adjust the WLAN notch.The WLAN notched band can be controlled independently with a wide range of tunability without disturbing the WiMAX bandnotch performance.Step by step design approach of the proposed antenna is discussed and the corresponding mathematical analysis of the proposed resonators are provided in both cases.Simulation of the proposed antenna is performed utilizing commercially available 3D-EM simulator,Ansoft High Frequency Structure Simulator(HFSS).The proposed antenna has high selectivity with experimental validation in terms of reflection coefficient,radiation characteristics,antenna gain,and percentage radiation efficiency.The corresponding measured frequency response of the input port corresponds quite well with the calculations and simulations in both cases.The proposed antenna is advantageous and can adjust according to the device requirements and be one of the attractive candidates for overlay cognitive radio UWB applications and URLLC service in 5G tactile internet.The proposed multifunctional antenna can also be used for wireless vital signs monitoring,sensing applications,and microwave imaging techniques.

2.5G相交光纤环网在地区电力通信网中的应用

对西宁地区原通信网络结构进行分析,依据地区级业务传送带宽需求,提出通信网优化方案,通过分部实施,建成了西宁城区2.5G相交光纤环网,确保了通信网架坚强可靠、安全稳定。

Satellite E2E Network Slicing Based on 5G Technology

We investigate the design of satellite network slicing for the first time to provide customized services for the diversified applications,and propose a novel scheme for satellite end-to-end(E2E) network slicing based on 5G technology,which provides a view of common satellite network slicing and supports flexible network deployment between the satellite and the ground.Specifically,considering the limited satellite network resource and the characteristics of the satellite channel,we propose a novel satellite E2E network slicing architecture.Therein,the deployment of the network functions between the satellite and the ground is coordinately considered.Subsequently,the classification and the isolation technologies of satellite network sub-slices are proposed adaptively based on 5G technology to support resource allocation on demand.Then,we develop the management technologies for the satellite E2E network slicing including slicing key performance indicator(KPI) design,slicing deployment,and slicing management.Finally,the analysis of the challenges and future work shows the potential research in the future.

A Compact Self-Isolated MIMO Antenna System for 5G Mobile Terminals

A compact self-isolated Multi Input Multi Output (MIMO) antennaarray is presented for 5G mobile phone devices. The proposed antenna systemis operating at the 3.5 GHz band (3400–3600 MHz) and consists of eight antennaelements placed along two side edges of a mobile device, which meets the currenttrend requirements of full-screen smartphone devices. Each antenna element isdivided into two parts, a front part and back part. The front part consists of anI-shaped feeding line and a modified Hilbert fractal monopole antenna, whereasthe back part is an L-shaped element shorted to the system ground by a0.5 mm short stub. A desirable compactness can be obtained by utilizing the Hilbert space-filling property where the antenna element’s overall planar size printedon the side-edge frame is just (9.57 mm × 5.99 mm). The proposed MIMO antenna system has been simulated, analyzed, fabricated and tested. Based on the selfisolated property, good isolation (better than 15 dB) is attained without employingadditional decoupling elements and/or isolation techniques, which increases system complexity and reduces the antenna efficiency. The scattering parameters,antenna efficiencies, antenna gains, and antenna radiation characteristics areinvestigated to assess the proposed antenna performance. For evaluating the proposed antenna array system performance, the Envelope Correlation Coefficients(ECCs), Mean Effective Gains (MEGs) and channel capacity are calculated.Desirable antenna and MIMO performances are evaluated to confirm the suitability of the proposed MIMO antenna system for 5G mobile terminals.

Application of 5G+VR Technology in Landscape Design Teaching

As the VR technology that has been applied in many fields in China,the arrival of 5G era provides a strong impetus for VR technology to take off again.And the in-depth application of 5G+VR technology will further promote higher education.In view of the problems and deficiencies of the current landscape design teaching methods in China’s universities,the Introduction to landscape design course and teaching as an example,5G+VR technology is introduced in this paper to carry out the innovative design and teaching application of the course system.The teaching effect feedback and evaluation were carried out.The research and application results show that the innovation of 5G+VR in the teaching content and form of landscape design makes the course teaching simple and vivid,has strong situational experience and learning atmosphere,and effectively stimulates students’interest in learning.

Towards Intelligent Reflecting Surface Empowered 6G Terahertz Communications: A Survey

Terahertz(THz)communications have been widely envisioned as a promising enabler to provide adequate bandwidth and achieve ultra-high data rates for sixth generation(6G)wireless networks.In order to mitigate blockage vulnerability caused by serious propagation attenuation and poor diffraction of THz waves,an intelligent reflecting surface(IRS),which manipulates the propagation of incident electromagnetic waves in a programmable manner by adjusting the phase shifts of passive reflecting elements,is proposed to create smart radio environments,improve spectrum efficiency and enhance coverage capability.Firstly,some prospective application scenarios driven by the IRS empowered THz communications are introduced,including wireless mobile communications,secure communications,unmanned aerial vehicle(UAV)scenario,mobile edge computing(MEC)scenario and THz localization scenario.Then,we discuss the enabling technologies employed by the IRS empowered THz system,involving hardware design,channel estimation,capacity optimization,beam control,resource allocation and robustness design.Moreover,the arising challenges and open problems encountered in the future IRS empowered THz communications are also highlighted.Concretely,these emerging problems possibly originate from channel modeling,new material exploration,experimental IRS testbeds and intensive deployment.Ultimately,the combination of THz communications and IRS is capable of accelerating the development of 6G wireless networks.

5 G时代智慧广电平台建设的策略与规划分析

作为当前通信技术的核心,5 G技术已经得到广泛应用。基于指导性政策的落地和智能技术的落实,推行基于5 G技术的智慧广电体系建设成为了未来发展的战略目标。详细研究了5 G技术和智慧广电的基础理论,基于现阶段智慧广电建设存在的难点问题,探讨5 G时代下智慧广电体系建设的规划与策略。

广电网络5 G技术垂直应用的探索

广电网络5 G技术垂直应用是广电行业借助网络切片等关键技术满足垂直行业发展中的差异化需求而进行的技术研发和业务开展。虽然当前关于广电网络5 G技术垂直应用的研究与实践尚处于初级阶段,但垂直应用所面临的行业需求的持续增加,使得广电网络5 G技术垂直应用成为广电网络建设中重点关注的内容。结合当前广电5 G技术研发与应用的实际,在概括垂直应用相关内容的基础上,对广电网络5 G技术垂直应用的技术性进行分析探讨,以丰富广电网络5 G技术垂直应用的思路和方法。

广电700 MHz 5 G的技术实现及业务规划探讨

作为网络发展中的重要资源,低频段700 MHz具有信号覆盖面广、数据传输稳定等特点,已成为广电网络部署5 G传输的重要通道。介绍了700 MHz的基本概念和广电700 MHz的5 G网络架构与技术基础,从核心网等3个方面分析了网络架构的重要内容,在此基础上对广电700 MHz的5 G网络差异化部署与业务规划进行了深度分析,提出未来广电700 MHz的5 G业务发展策略,希望能够对促进相关建设规划与业务布局提供借鉴。