Abstract： In order to ensure the shielding performance of the shielding cavity of the 5G equipment in the converter station, and to clarify the rule of the influence of the number and size of the cavity aperture on its shielding effectiveness, this study constructs the electromagnetic shielding effectiveness analysis model of the shielding cavity under the HFSS simulation environment, and analyzes the spatial distribution characteristics of the electromagnetic radiation of the 5G microstrip patch antenna. Then, the influence of the slot height of the cavity on the shielding effectiveness is analyzed. It is found that the shielding effectiveness under different slot diameters increases with the increase of the slot height, and the electromagnetic radiation intensity decreases from 24.81 dB at 0.5 mm height to 16.29 dB at 2.0 mm height. At the same time, the analysis shows that the shielding effectiveness decreases with the increase of the slot diameter, and the maximum radiation intensity increases from -15.13 dB at 1.0 mm diameter to 49.87 dB at 7.0 mm diameter. Finally, with a certain proportion of the aperture area, it is found that the shielding effectiveness of the shielding cavity is continuously improved with the increase of the aperture number and the decrease of the aperture diameter.

Abstract：The combination of high-precision indoor positioning technology and small cell communication network can effectively reduce the cost of deployment and operation and maintenance, and provide important solutions for various positioning application scenarios. Firstly, the common positioning technologies were summarized and compared, and the feasibility of different positioning technologies in small cells was further analyzed. Then, an indoor positioning scheme based on small cells was proposed, and its architecture was described in detail. The scheme had the advantages of easy expansion of transmission network, flexible transmission path and open positioning interface. Finally, the application scenarios and positioning processes of the two positioning technologies selected based on this scheme were presented. The results show that the indoor positioning scheme based on small cells can meet the positioning needs of the consumers and a wider range of vertical industries, which has great significance and application prospects.

Abstract：Based on a large amount of energy consumption, performance indicators and base station configuration data that can be collected in the 5G network management system, this paper uses machine learning algorithms to establish an energy consumption calculation model for common AAU equipment on the existing network, and verifies the accuracy of the model. The test results show that the accuracy of the energy consumption calculation models established by this scheme for several common AAU devices in the existing network has reached more than 97%, which fully proves that the energy consumption modeling method has high practicability and promotion value.

Abstract：In order to effectively and automatically select communication links and reduce the global risk of communication, this paper proposes an automatic selection method of power 5G communication links based on risk balance. First of all, taking the lowest global risk and the highest service channel availability as the objective functions, and taking the channel bandwidth, delay and packet loss rate as the constraints, the automatic selection model of power 5G communication link is established. The business risk degree is evaluated by taking the business risk degree and the network business risk balance degree as indicators. According to the degree of risk, the communication services are sorted from the lowest to the highest. The automatic selection model of communication links is used to give priority to the selection of links for the services with lower risk. The automatic selection model of communication links is gotten through quantum genetic algorithm, to obtain the lowest global risk and the highest service channel availability value, and complete the automatic selection of communication links. Experiments show that this method can effectively obtain the risk degree of each communication service, automatically select the communication link, reduce the global risk degree, improve the availability and bandwidth of the service channel, reduce the channel delay and packet loss rate, and achieve better risk balancing effect.

Abstract：On-line monitoring system of transmission line is an important part of smart grid. In view of the lack of effective online monitoring network modeling to meet the performance requirements, a comprehensive evaluation modeling method based on cost function is proposed in this paper. The model integrates short-range ZigBee wireless relay communication and long-range 5G communication, and groups all nodes are grouped in an optimized way according to the two indicators of delay and energy consumption, so as to optimize the cost function in the communication process. The experimental results show that the modeling proposed in this paper can effectively build an online monitoring system network with optimized performance, which is conducive to the realization of smart grid and double carbon goal.

Abstract：With the development of the Energy Internet and the “dual-carbon” goal, a batch of new services will bloom to monitor and control the operation of power distribution network. To adapt to the developing demands of power distribution network, a terminal importance-based base-station deployment strategy(TI-BSDS) is proposed. The strategy takes into account the terminal service carrying status, quantifies the importance of the terminal in the distribution network based on the importance of the service, and taking importance of the terminal as weight, using the weighted signal-to-interference and noise ratio, deployment cost and terminal overlap coverage as the optimization target, adopts genetic algorithm to realize the deployment of 5G macro base stations and micro base stations. Simulation results show that TI-BSDS is superior to the comparison algorithms in terms of weighted signal-to-noise ratio and deployment cost, and TI-BSDS can effectively improve the deployment benefit of 5G networks in power distribution networks.

Abstract：Among the four key factors of vehicle-road cooperation system-smart car, smart road, powerful network and smart cloud, the powerful network built by C-V2X and 5G is the main body of vehicle-road collaboration at the present stage, and a bridge for effective integration and complementary advantages of various elements of vehicle-road-network-cloud. The business scenarios of Internet of Vehicles based on vehicle-rode collaborative are very rich, it has different requirements on the network performance. 5G slice technology can be customized logic network, providing end-to-end large bandwidth, low latency, high reliable and flexible customization service for Internet of Vehicles in different business scenarios,to realize the rapid and online business and more extreme user experience. Starting from the network requirements of the vehicle-road collaboration business scenario, this paper focuses on the application of 5G network slicing technology in vehicle-road collaboration.

Abstract：As one of the important engines to promote the digital transformation of the society, 5G private networks have been applied to industries such as electric power, mining, education, and medical care. After analyzing the rich and diverse service requirements of current industry customers for 5G private networks, firstly it is proposed that the core service capabilities that the 5G private network can provide customers in four aspects: native capability, data capability, collaboration capability and operational capability. Secondly, it is further discussed that scenario-based private network services such as low latency, large bandwidth, high reliability, strong security and flexible networking can be formed through effective organization of core service capabilities. Finally, it analyzes how to use private network services to form industry private network solutions, taking mining, electric power, port and other industry requirements as examples.

Abstract：The 5G industry virtual private network operation platform can solve the difficult problems that operators encounter in the management of 5G industry virtual private network, such as trans-professional, trans-domain and online operation, so that operators can manage 5G industry virtual private network more conveniently and efficiently. Based on the research of operators′ demands for management of 5G virtual private network, this paper puts forward the core functions and future evolution direction of operation platform for the 5G virtual private network, such as digital delivery operations solutions, intelligent operation and maintenance support, which will help improve operators′ efficient management of 5G virtual private network and help improve enterprises′ digitalization level.

Abstract：Logistics industry is a basic, strategic and leading industry supporting the development of national economy. As the key part in the logistics industry, warehousing is faced with the "efficiency mire", such as low utilization rate, low proportion of high-standard warehouses, low sorting accuracy, and difficult multi-warehouse management. The key to improve the efficiency of warehousing is to strengthen the construction of digital logistics infrastructure. As one of the key technologies in the new digital infrastructure, 5G can provide network capabilities with low latency, high bandwidth and massive access. 5G can also make use of advanced technologies such as network slicing, edge computing and end-edge-cloud collaboration to promote efficient allocation of computing and storage resources on edge-cloud facilities. Thus a more flexible, efficient, fast iterative and evolvable model will promote the intelligent upgrading of logistics and warehousing. This paper sorts out the application scenarios of intelligent logistics warehousing based on 5G, and discusses the role and value of 5G technology in facilitating intelligent upgrading of logistics warehousing.

Abstract：The information transformation of traditional iron and steel manufacturing industry has more and more obvious requirements for ultra-low delay, ultra-wide bandwidth uplink services, efficient and stable network quality. Local wireless Wi-Fi, Blue- tooth, industrial AP and optical cable are unable to meet the needs of business transformation in resisting interference, packet loss stability, service scalability, ultra-low delay and the number of access terminals. In the 5G network era, through flexible deployment of UPF and broadening the function of UPF to meet the needs of various types of network business capacity of traditional steel manufacturing industry, through the optimization of private network deployment to achieve a network to meet the needs of a variety of business use, it can effectively improve business efficiency.

Abstract：5G industry virtual private network self-service solution can solve the thorny problems encountered during the 5G industry implementation. Industry will use 5G virtual private network much easier. Enterprises will independently control the network, flexible configure it, and autonomously open card and account, which will significantly improve the efficiency. Based on the research of industry demand, this paper puts forward the networking scheme and basic functions of 5G industry virtual private network self-service platform, and shows its application scenario and implementation effect. It will promote industry application of virtual private network, and help the digital transformation of the industry.

Abstract：Equipment manufacturing industry involves many important fields, such as aviation manufacturing, automobile manufacturing, and shipbuilding. Its product production process is complex, whose component scale is large and production design is uncertain.So the requirements of equipment manufacturing for coordination, precision and safety are strict. 5G has the characteristics of low delay, high reliability, large bandwidth and high speed. It also has software architecture. Combined with edge calculation, AI and other digital technologies, 5G can enable the equipment manufacturing industry to upgrate in different links such as design, production, operation and maintenance.The paper analyzes the main pain points faced by the equipment manufacturing industry in each link and the application requirements of 5G. Then it introduces the application schemes and application outcome of typical scenarios. Finally, it analyzes the difficulties faced by the equipment manufacturing industry in 5G application, and puts forward relevant suggestions.

Abstract：This paper analyzed the differentiated requirements of different business systems for communication network in three domains including urban rail transit safety production, internal management and external services, and studied the key technologies of 5G virtual private network construction, such as 5G network slicing and multi-access edge computing. Based on 5G network slicing and multi-access edge computing technology, this paper presented a technical scheme of constructing virtual 5G private network of urban rail transit for different demand scenarios, which provided a strong support for the development of urban rail transit to convenience, efficiency and intelligence.

Abstract：Intelligent manufacturing has become the trend of shipbuilding. Industrial Internet is one of the key technologies to realize intelligent manufacturing. As a new generation of mobile communication technology, 5G has the characteristics of wireless, high speed, large capacity，low delay and high reliability, which is highly consistent with the requirements of information transmission in industrial Internet. Domestic shipyards have made many explorations in the application of industrial Internet, but some problems have been exposed, such as high implementation cost, isolated data island, and difficult equipment access to network. The typical application scenarios of 5G in shipbuilding industrial Internet are proposed by combining with the characteristics of shipbuilding and 5G technology. Finally, proposals for application of 5G in shipbuilding industrial Internet is made.

Abstract：In order to improve the rapid response and intelligent level of public security patrol, a set of networked UAV intelligent patrol solution is constructed based on 5G, UAV(unmanned aerial vehicle), MEC(multi-access edge computing) and AI(artificial intelligence). UAV network connection is realized through dedicated 5G communication terminal, high-definition video remote backhaul is realized with 5G uplink ultra-large bandwidth, and ultra-low latency of 5G MEC is used to realize precise control of UAV beyond visual range. Aiming at the video features of low-altitude UAVs, the face recognition algorithm is optimized, the face is accurately captured in real time and the character feature AI recognition is performed to realize smart patrol and defense. Application practices and tests were carried out on the construction site, real-time monitoring of whether people near the construction site were wearing masks, the expected results were achieved.

Abstract：5G network has the characteristics of larger bandwidth, wider coverage, faster speed, lower delay, more reliable connection, and so on. It will provide a wider prospect for the development of industrial Internet. 5G network needs to provide network slice, MEC, uRLLC and other capabilities to industry users through a convenient way. Based on the study of industrial demands and 5G key technologies, the matching between industrial scenario and various 5G capabilities are refined, and 5G networking schemes for industry are proposed to fit different scenarios, in order to promote the deep integration of 5G network and industry.

Abstract：The development of UAV industry is introduced, the basic concept and system of networked UAV is analyzed and summarized, and the research and analysis of 5G ubiquitous low altitude network, 5G technology collaborative safety control and 5G UAV cloud platform capability enhancement are carried out. The construction plan and deployment plan of 5G-based low-altitude network are proposed, the development of UAV safety control and capability platform based on 5G and eSIM technology is explored. And finally, the application of 5G network-connected UAV is discussed.

Abstract：The current status and vision of 3GPP V2X communication security technology are briefly introduced. Corresponding security requirements are given based on the security threatens of V2X communication. This paper briefly introduces the principal method of implementing V2X communication security, and proposes the service architecture, PKI architecture and multi-PKI system mutual trust mechanism for V2X communication security. Finally, the status of domestic V2X security standardization and industrial development prospects are introduced.

Abstract：This paper presents the Quality of Service(QoS) mechanism and the development process of the mobile network. The ability and deficiency of both 3rd-Generation(3G) gold, silver and cooper and the 4rd-Generation(4G) QoS Class Identifier(QCI) in the implementation of customized network are analyzed, and the QoS design ideas, implementation principles and outstanding advantages of 5rd-Generation(5G) network are also introduced. Combined with the productized experience of 4G QoS capability operation in To B mode, the QoS capability of 5G network is end-to-end productized encapsulating for the industry customers to achieve the 5G customized network capability based on the QoS flow. Meanwhile, combined business characteristics with business requirements, e.g. industrial Internet, augmented reality, autonomous driving, intelligent transportation and other industries and applications, the typical application solutions and productized ideas of 5G QoS mechanism are designed.

Abstract：5G industrial Internet is the hot spot and focus in the development of 5G and industrial Internet in China. Edge computing is introduced in both industrial Internet and 5G, but the concern of it is different. This paper analyzes the industrial Internet application based on 5G edge computing and its development, summarizes the industrial Internet edge computing technical architecture, and presents the cloud edge collaborative technical architecture of 5G industrial Internet edge computing.

Abstract：With the rapid development of communication technology, the "best" service capability provided by traditional network can no longer meet the demands of various vertical industries for high-performance networks such as ultra-low delay, deterministic delay and high reliability, and 5G deterministic network emerges at the historic moment.5G deterministic network builds higher quality network service capability mainly through 5G key technologies such as network slicing, mobile edge computing and time-sensitive network. Starting from the capability of personalization and customization of 5G network, this paper analyzes the requirements of four typical industrial application scenarios on the determination of 5G network performance indicators, puts forward the deterministic network implementation architecture and key technologies, and presents some typical cases.