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• 2021, Vol. 47, No. 11 Published:15 November 2021 Previous Issue Next Issue
• Beidou Grid Code: CIM spatio-temporal grid framework for digital twin cities
• LI Lin, CHENG Chengqi, REN Fuhu
• Information and Communications Technology and Policy. 2021, 47(11): 1. DOI:10.12267/j.issn.2096-5931.2021.11.001
• Abstract ( 1161 ) 　　
• Digital twin cities have become the mainstream technical route and development goal of the construction of new smart cities. The core of digital twin city is the City Information Model(CIM). The traditional “GIS + BIM” modeling method has obvious limitations: the object-oriented data organization method is difficult to solve the problem of data organization and aggregation due to the complexity of the object itself and the private definition of object ID. Beidou Grid Code technology (including Beidou Split Time Code) provides a spatiotemporal grid framework, which can build the global spatial digital twin grid data model. Its essence is an open big data architecture based on spatiotemporal coding, which can organize urban multi-source heterogeneous spatiotemporal data through grid association and support the CIM modeling of digital twin cities. The specific modeling process includes four steps: spatio-temporal grid coding, grid associated data, grid data loading and data-driven model. The spatio-temporal grid framework based on Beidou Grid Code has important enabling value for CIM platform.
  
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• City brain development status, typical practice and path recommendation
• ZOU Junyan, XU Minghui, PANG Xiaojing
• Information and Communications Technology and Policy. 2021, 47(11): 6. DOI:10.12267/j.issn.2096-5931.2021.11.002
• Abstract ( 378 ) 　　
• With the rapid development of new technologies, smart cities have entered the deep end of its development. The city brain has shown great potential in breaking the information islands, amplifying the value of data elements, improving the urban governance capacity and promoting industrial development. It has become the standard allocation for smart cities. The research sorts out the current situation and development issues of the city brain industry, and thoroughly studies the typical practices of Hangzhou, Pudong, and Haidian city brains. This paper provides suggestions for city brain in terms of development concepts, top-level design, organizational mechanisms, construction priorities, and continuous operations, guiding the construction of city brains in various places.
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• How to build smart city for China􀆳s small cities
• LI Wendong, SUN Liang, GUO Zhongmei
• Information and Communications Technology and Policy. 2021, 47(11): 14. DOI:10.12267/j.issn.2096-5931.2021.11.003
• Abstract ( 317 ) 　　
• Based on China Unicom􀆳s smart city project practices and our understanding of the development trend of China􀆳s smart city, this paper focuses on the demand of the sinking construction of new smart city, and discusses about the difference demands between the big city and the small city, then gives suggestions on the smart city promotion of lovcal small cities for the government. 
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• Research and thinking on data security of new smart city
• GUO Zhen, SHEN Qi, LIU Yuchen
• Information and Communications Technology and Policy. 2021, 47(11): 20. DOI:10.12267/j.issn.2096-5931.2021.11.004
• Abstract ( 423 ) 　　
• This paper analyzes the industry development status and construction practice of data security, elaborate the characteristics and construction ideas of the new smart city data security, and propose the trend research, development suggestions and future prospects of the future construction of the new smart city data security. 
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• Research on input and output pre evaluation model of smart city
• TANG Huaikun, GU Ying
• Information and Communications Technology and Policy. 2021, 47(11): 26. DOI:10.12267/j.issn.2096-5931.2021.11.005
• Abstract ( 258 ) 　　
• This paper analyzes the latest research results of input and output of smart cities at home and abroad, finds that most of this field is post evaluation and lack of pre evaluation. This paper puts forward a new input-output pre evaluation analysis model of smart city, selects the input indicators by using expert investigation method, expert scoring method and principal component analysis method, obtains five core input indicators, and selects six output indicators with reference to national standards. A total of 28 cities in the first, second and third tier of China are randomly selected for model canonical correlation analysis, and finally the pre evaluation impact factor data before input and output are obtained. The results can be used as a reference tool for the pre evaluation of the construction effectiveness of new smart cities.
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• Research on patent situation of 5G+ smart city
• LI Li , YAN Kun , LI Wenyu
• Information and Communications Technology and Policy. 2021, 47(11): 31. DOI:10.12267/j.issn.2096-5931.2021.11.006
• Abstract ( 303 ) 　　
• First, introduce the current integration of 5G and smart city. Then analyze the 5G+ smart city patent situation at home and abroad from the perspectives of application trends, geographical distribution, and technical fields. Finally, it is suggested that the main body of patent application and management in my country should focus on improving the patent quality system, optimizing the layout of technical fields, and strengthening the deep integration of patents and industry in the field of 5G+ smart city.
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• Research on the evaluation standard of new smart city
• LI Yi
• Information and Communications Technology and Policy. 2021, 47(11): 36. DOI:10.12267/j.issn.2096-5931.2021.11.007
• Abstract ( 249 ) 　　
• From the 14th five year plan, the new smart city will return to the original mission of “city is of the people”. Focusing on the judgment of urban governance in the new era of “ people􀆳s cities are built by the people and people􀆳s cities are for the people”, guided by improving the people􀆳s sense of security, acquisition, happiness and participation in cities in the new era. This paper considers and puts forward the SMILE evaluation system for the new smart cities, and looks forward to guiding the construction of new smart cities with the evaluation system to achieve the goal of “people􀆳s satisfaction”, improve social governance capacity and promote all-round progress of social civilization.
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• The enlightenment of the transformation and innovation practice of Singapore􀆳s information and communication industry on China's digital development
• ZHOU Bin, ZHU Chenming, WANG Yong
• Information and Communications Technology and Policy. 2021, 47(11): 40. DOI:10.12267/j.issn.2096-5931.2021.11.008
• Abstract ( 362 ) 　　
• This paper analyzes the transformation and development process of Singapore􀆳s information and communication industry from different perspectives such as the development path of the information and communication industry chain and its role in promoting the overall economic development, and summarizes that the development of information and communication industry should be upgraded into a national strategy, the “hard and soft” infrastructure should be promoted to form international location advantages, the upgrading promotion plan of “ three strategic industries” and the “ double ecosystem system” . The development experience of organically integrating the national industrial policies and the improvement of international market competitiveness, and building its information and communication industry into an international industry covering the world through international industrial main enterprises and export-oriented industrial expansion strategy. These development experiences of international transformation have provided many experiences in government guidance, soft and hard infrastructure, industrial policies, human resources, cross-border integration and so on for the in-depth promotion of China􀆳s current digital China strategy with information and communication industry as the core, especially the development of digital economy. 
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• Research on the collaboration situation of blockchain industry chain in China
• WANG Qiang , ZHANG Yihui , LU Yapeng
• Information and Communications Technology and Policy. 2021, 47(11): 45. DOI:10.12267/j.issn.2096-5931.2021.11.009
• Abstract ( 333 ) 　　
• Blockchain has been in development in China for five years, from encrypted digital tokens that hide financial risks, to industry applications that are continuously explored by various industries, and then to constantly enriching basic technology products. Blockchain extends from hot technology concepts to industries application concepts, especially in the past two years, blockchain has entered a new stage of large-scale industrial development. However, the industry currently lacks research on the characteristics, models, and development trends of the blockchain industry chain, and it is still difficult to form a clear understanding of the relationship between the various levels of the blockchain industry. Start with the core subject of the blockchain, summarize the upstream, midstream, and downstream collaboration chains of the core subject, clarify the characteristics, focus and operation mode of the industrial chain, and provide an important reference for understanding the current situation and development trend of blockchain industry in China.
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• The application dilemma and countermeasures of informed consent framework from the perspective of personal information protection
• YAN Ximin
• Information and Communications Technology and Policy. 2021, 47(11): 51. DOI:10.12267/j.issn.2096-5931.2021.11.010
• Abstract ( 241 ) 　　
• With the continuous development of the technology in big data, informed consent framework, as a basic principle in the field of personal information protection, has some practical application difficulties, such as serious formalism, vague terms, lack of feedback of diversified opinions, etc. , which will be difficult to restrict the personal information collection and processing behavior of enterprises. This paper analyzes the reasons for the application dilemma of informed consent framework from three aspects of user factor, enterprise factor and objective factor, and summarizes the fundamental reason as that users and enterprises are in the unequal position of information. In order to reduce the information gap between users and enterprises and increase users’ control over collection and processing of personal information, this paper analyzes the improvement of the framework of informed consent from the perspectives of improving legal regulations, strengthening supervision and inspection, etc.
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• Analysis on the development of digital economy industry under the goal of carbon neutrality 
• MENG Qingli
• Information and Communications Technology and Policy. 2021, 47(11): 55. DOI:10.12267/j.issn.2096-5931.2021.11.011
• Abstract ( 304 ) 　　
• This paper analyzes the carbon neutral development policies and plans of major countries and international internet companies, studies the path for Chinese internet companies to achieve carbon neutrality goals, and explores how the digital economy can promote the industrial chain and value chain to achieve carbon neutrality. Finally, it proposes policy recommendations such as learning from the carbon neutral development experience of international internet companies, repositioning data centers, using internet platforms as the starting point, and establishing industry alliances.
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• Impact analysis of DC/ EP implementation for the prevention and government of telecommunication network fraud
• DONG Yaping, WEI Wei, CUI Xiandong, WANG Yuhuan
• Information and Communications Technology and Policy. 2021, 47(11): 60. DOI:10.12267/j.issn.2096-5931.2021.11.012
• Abstract ( 560 ) 　　
• Digital Currency / Electronic Payment ( DC/ EP) will inject new vitality into the economic society, while telecommunications network fraud has always harmed the interests of the people. While DC/ EP may increase the risk of fraud and the difficulty of prevention and governance, it also promotes the protection of users’ personal information, and solves the problems of tracking and tracing the source of clues and mining the association of fraud gangs through collecting evidence through the flow of fraudulent funds. Therefore, the DC/ EP will play an important role in the comprehensive management of telecommunication network fraud by improving the laws and regulations, and innovative technology prevention and application. 
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• Analysis of key technologies and development trend of satellite optical communication 
• CUI Xiao
• Information and Communications Technology and Policy. 2021, 47(11): 65. DOI:10.12267/j.issn.2096-5931.2021.11.013
• Abstract ( 409 ) 　　
• This paper analyzes the development of experimental projects of current satellite optical communication, the industrialization process of satellite optical communication, and researches conducted on the key technologies used in it from the fields of optics, signal processing, machinery, etc. Finally, the development trend of satellite optical communications is discussed.
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• Research on the progress in international standardization of artificial intelligence security 
• ZHANG Linlin, WANG Teng
• Information and Communications Technology and Policy. 2021, 47(11): 73. DOI:10.12267/j.issn.2096-5931.2021.11.014
• Abstract ( 416 ) 　　
• International standardization plays a fundamental, supporting and leading role in artificial intelligence and its industrial development. It is not only the key to promote industrial innovation and development, but also the commanding point of industrial competition. Among them, security standards are an important part of artificial intelligence standard system. This paper studies and analyzes the current situation of international standardization work in the field of artificial intelligence security, analyzes and summarizes the characteristics, concerns and future research directions of the standardization work in the field of artificial intelligence security of various international standards organizations, and puts forward suggestions for China to participate in the work of international standards on artificial intelligence security. 
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• Research on a trusted ten gigabit encryption shunt authentication device
• GE Hongwu, CHEN Min
• Information and Communications Technology and Policy. 2021, 47(11): 79. DOI:10.12267/j.issn.2096-5931.2021.11.015
• Abstract ( 215 ) 　　
• Taking power supply timing control and the root of trust as the basis for the credible start-up measurement, combined with the power safety certification protection strategy mechanism, a design scheme of a credible 10 Gigabit encrypted shunt certification device is proposed. This solution makes full use of the high-performance programmable resources inside the FPGA to realize 10 Gigabit message data source analysis and directional forwarding. At the same time, it builds a multi-channel data link to realize parallel transmission, realizes symmetric encryption through a parallel bus, and realizes key configuration and key configuration through Gigabit Ethernet. Negotiation function.
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• Industrial optical network helps the digital transformation and development of industrial enterprises
• CAO Xiaobo, GUO Lei
• Information and Communications Technology and Policy. 2021, 47(11): 84. DOI:10.12267/j.issn.2096-5931.2021.11.016
• Abstract ( 244 ) 　　
• Among the many network technology solutions of the Industrial Internet, the industrial optical network has emerged as a high efficiency, flexibility and easy management wired network solution. Industrial optical network has the characteristics of high bandwidth, low delay, and anti-interference, which is very suitable as a technical choice for industrial network upgrading and transformation. This article studies the technology and application of industrial optical network in the industrial field. 
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• Abnormal detection of 5G core network function services 
• XIN Ran , GAO Shen , RUAN Bonan
• Information and Communications Technology and Policy. 2021, 47(11): 89. DOI:10.12267/j.issn.2096-5931.2021.11.017
• Abstract ( 411 ) 　　
• As the new generation of mobile communication technology, 5G adopts the service-oriented architecture for the core network, which splits the whole with multiple functions into multiple individuals with independent functions, making the core network more flexible. While the introduction of new architectures and new technologies facilitates communication of users, it also brings some new security issues. This article introduces the security risks of 5G core network element services and corresponding abnormal detection methods, designs a prototype system for detecting abnormalities of 5G core network function services by traffic analyzing and explains the technical routes of each module in the prototype.
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