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    15 September 2018, Volume 2 Issue 3
    Frontier and Comprehensive Review
    Application and development of Internet of things in medical service
    Zhibiao WANG, Peng RAN, Qiao CHEN
    2018, 2(3):  1-10.  doi:10.11959/j.issn.2096-3750.2018.00058
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    With the continuous development of information technology,such technologies as the Internet of things,sensors,mobile terminals and big data are being fully used in medical services.Intelligent medical care has also become a new goal of hospital information construction.The emergence and development of Internet of things technology were analyzed,the importance of this technology in the field of medical and health construction were summarized,which helped to improve the efficiency and quality of medical process services,improved the level of comprehensive hospital management.Two aspects were mainly elaborated:one was the intelligent medical system based on the Internet of things,which provided medical and health interactive services to users,and promoted the transformation of disease from therapeutic intervention to preventive intervention; the other was the intelligent medical system based on the Internet of things,promoted cloud computing and real-time transmission and sharing of large data in medical information.The application of this technology improved the utilization of medical resourced,reduced the cost of medical treatment,and changed the traditional mode of medical treatment.It is foreseeable that intelligent medical services based on Internet of things will become an indispensable part of people’s healthy life.

    Technological requirements and challenges of body area networks
    Jinzhao LIN,Tong BAI,Guoquan LI,Yu PANG
    2018, 2(3):  11-20.  doi:10.11959/j.issn.2096-3750.2018.00059
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    With the development of ubiquitous networks and huge requirements of tele-medicine,an emerged new technology of body area network (BAN) has attracted extensive attention.BAN system could be used for medical,personal health and entertainment applications by implanting wireless sensors into or around the human body,which realized real-time detection and diagnosis of physical vital signs.However,BAN had more stringent requirements on power consumption,quality of service (QoS),security performance and other specifications.Based on its technological requirements,the research status and development trends of key technologies were discussed deeply,such as information perception of vital signs,wireless transmission,information security and integrated circuit design,and the faced challenges in applications were analyzed.

    Theory and Technology
    Smart Internet of things aided by“terminal-edge-cloud” cooperation
    Dapeng WU,Puning ZHANG,Ruyan WANG
    2018, 2(3):  21-28.  doi:10.11959/j.issn.2096-3750.2018.00060
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    The further expansion of the Internet of things (IoT) traffic and the explosive growth of the terminal data require higher delay performance and computing ability of the access network.The traditional wireless network architecture has been unable to support the rapid development of IoT.Thus,the edge-driven smart IoT architecture was proposed.Firstly,the main factors that restrict the development of IoT were analyzed,and then the edge computing technology was introduced into the IoT to form a “terminal-edge-cloud” cooperative computing architecture to deal with the traffic data efficiently and timely.Finally,the challenges of the edge-driven smart IoT were analyzed and the future work of this system was proposed.

    Node mobility scheme in emergency multi-hop wireless network
    Kangrong ZHANG,Jiming LIN,Lin ZHENG
    2018, 2(3):  29-35.  doi:10.11959/j.issn.2096-3750.2018.00061
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    When there is a segmentation phenomenon in the network,the increase in throughput easily leads to network congestion.The key problem that causes network segmentation is that there are key nodes in the network.The key nodes are public nodes of a large number of network routes,which lead to the increase of energy consumption of key nodes and the decrease of network communication efficiency.A node mobility scheme based on dependency graphs to compensate for network segmentation was proposed.Firstly,the key nodes that cause congestion in the network were determined through the dependency graph.Then,the neighboring points of the key nodes were selected.Under the condition that the topology of the nodes were unchanged,moving in the divection of the shortest connected distance to establish a backup route of the key node position.The simulation results show that compared with the existing node mobility schemes,this scheme has significant performance improvements in network connectivity,coverage and network life cycle.

    Task offloading and resource allocation in vehicle heterogeneous networks with MEC
    Haibo ZHANG,Qiuji LUAN,Jiang ZHU,Fangwei LI
    2018, 2(3):  36-43.  doi:10.11959/j.issn.2096-3750.2018.00062
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    Based on the advantages of high-bandwidth and low-latency brought by mobile edge computing (MEC),which could provide IT service environment and cloud computing capability,combined with the long-term evolution unlicensed (LTE-U) technology,the task offloading decision and resource allocation issues in vehicle heterogeneous network were studied.Considering the link differentiation requirements,which were the high capacity of vehicle-to-roadside unit (V2I) links and the super reliability of vehicle-to-vehicle (V2V) links,quality of service (QoS) was modeled as the combination of capacity and latency.Firstly,the improved K-means algorithm was used to cluster the request vehicles according to different QoS to determine the communication mode.Secondly,the LTE-U technology based on non-competition period (CFP) which was combined with carrier aggregation (CA) technology,and the distribution Q-Learning algorithm were adopted to allocate the channel and power.The simulation results show that the proposed mechanism can maximize the V2I link traversal capacity while ensuring the reliability of the V2I link.

    Research on naming and addressing technology of the Internet of things
    Lingyun JIANG,Yanru MU,Hongbo ZHU
    2018, 2(3):  44-50.  doi:10.11959/j.issn.2096-3750.2018.00063
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    With the rapid development of Internet of things,traditional naming and addressing schemes such as IP and URI are facing many challenges,including mobility,security and scalability,etc.In such context,the research progress of naming and addressing technology based on traditional network architecture and future network architecture was described.Then the development trend and core problems in this field were discussed.It was expected to be helpful for the domestic research in the related field.

    Secure communication approach for Internet of things based on C-RAN fronthaul compression
    Yong WANG,Mu ZHOU,Zengshan TIAN,Jinjun WU
    2018, 2(3):  51-60.  doi:10.11959/j.issn.2096-3750.2018.00064
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    A resource allocation algorithm was proposed for downlink C-RAN secure communication system.This algorithm jointly optimized the parameters of base station (BS) mode,quantized noise and beamforming under the constraints of SINR requirements of Internet of things information receiver,eavesdropped receiver and fronthaul link capacity.Such a design was a non-convex optimization problem,and a step-by step optimization algorithm was proposed to decompose the original optimization problem efficiently.Semi-definite technique and function smoothing approach were adopted,and the local optimization solution of the original problem was obtained by the iterative different of convex method.Bi-section approach was further proposed to determine BS mode,and the transmitting power of the BSs were finally optimized.Simulation results indicate that the proposed joint optimization algorithm achieves better performance than group sparse optimization algorithm and baseline algorithm,and it has approximate optimal performance as the exhaustive search algorithm.

    A transmission technology of environmental monitoring for ocean based on over-the-horizon skywave
    Guojun LI,Xiaofei XU,Changrong YE,Deping ZHANG,Lu TAN,Yakun XING
    2018, 2(3):  61-70.  doi:10.11959/j.issn.2096-3750.2018.00065
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    In view of the serious limitation of local resource supply for remote island and reef and the lack of low cost,high reliability long-distance transmission methods for environmental monitoring,relying on the mobile communication base stations widely distributed on the land,an over-the-horizon(OTH) skywave access network based on wide-area cooperative reception was proposed.The problems of channel fading,link asymmetry and spectrum congestion faced by remote island and reef environments monitoring for an OTH skywave transmission were solved from three aspects:physical layer,network layer and perceptive layer.The simulation results of the lower link transmission waveform and the multi-channel fusion algorithm in the typical skywave channel environment show that the reliable access of low-power transceiver in the remote island and reef within a range of 3 000 km could be guaranteed only through the cooperative reception of three access nodes.There was also some reference to monitoring of national ocean-going ships and border defence traffic pass monitoring.

    Survey on privacy preserving techniques for blockchain
    Zonghui WANG,Shengli ZHANG,Shi JIN,Hui WANG
    2018, 2(3):  71-81.  doi:10.11959/j.issn.2096-3750.2018.00066
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    Blockchain is a kind of distributed ledger technology with the characteristics of decentralization,security reliability,tamper-proof and programmable.The open and transparent feature of the blockchain system has seriously threatened the transaction privacy of users,and the corresponding privacy problem solution is designed for different application scenarios.Firstly,the basic working principle of block chain technology was introduced,and typical privacy issues was introduced in blockchain,such as transaction privacy and account privacy.Secondly,the existing typical blockchain privacy protection schemes were divided into three types:mixed-coin technology,cryptography technology and secure channel technology,and presents a comprehensive and comprehensive introduction to this three privacy protection schemes; Finally,the blockchain data privacy protection technology was analyzed,the application and development on IoT security were prospeted.

    Service and Application
    System architecture and key technologies of emergency command Internet of things
    Qianbin CHEN,Guojun LI,Guoquan LI,Changrong YE
    2018, 2(3):  82-90.  doi:10.11959/j.issn.2096-3750.2018.00067
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    Emergency command Internet of things is an important part of the construction of smart cities.It is one of the application fields of the Internet of things,which benefits a wide range,require rich support technologies,drives the whole industry and has large demonstration effect of service.Starting from the construction of the disaster site rescue situation map,the emergency rescue command and command issue at the emergency incident site was focused.Referring to the joint search and rescue network in the battlefield and the tactical Internet system structure,the emergency command Internet of things system architecture was proposed,including body LAN,on-site command network and remote access network.The four key problems faced by the construction of emergency command the Internet of things was discussed,single soldier tracking and positioning,wearable vital signs monitoring,mobile self-organizing network and shortwave sky wave remote communication.The two scenarios of urban fire rescue and natural disaster rescue were used to analyze and design the integrated application system of the emergency command IoT system,which provided useful exploration for building a new generation of emergency command information system and promoting the construction of smart cities.

    Comprehensive sensing system of new smart city
    Jing YANG,Zuwei ZHANG,Daoyuan YAO,Yang HU,Junjiang QIAN,Zhe ZHOU,Xubo HU,Yupeng YUAN,Xiaofei LI
    2018, 2(3):  91-97.  doi:10.11959/j.issn.2096-3750.2018.00068
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    Focusing on the demand of building the new smart city,the basic theoretical research on the comprehensive sensing system of cities has been described.Firstly,the system architecture of the comprehensive sensing system was proposed respectively.Then,the data system of the comprehensive sensing system was presented.Finally,the technology system of the comprehensive sensing system was given.The important theoretical support could be provided by the proposed solution for the new smart city construction.

    Application of IoT technology in the prevention of geological hazard
    Hui QIAO,Tao WANG,Zhiyuan XIE
    2018, 2(3):  98-103.  doi:10.11959/j.issn.2096-3750.2018.00069
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    A system of on-line monitoring,warning,command and dispatch of geological hazard based on the IoT was presented,which was based on the practice of the China Mobile IoT Company on-line monitoring and warning project of geological hazard,and the preventing techniques of geological hazard at home and abroad.The system mainly consisted of four links:online automatic monitoring,geological disaster warning,command and decision-making,rescue scheduling.The system could monitor the geological hazards for 24 hours uninterruptedly,automatically finding the anomaly of the geological hazard points and alarm automatically when abnormal state of the hidden danger points was found.Through the intelligent data analysis,the system could help commanders make the scientific decision quickly; through the IoT label on the rescue personnel,equipment and materials,the system could show them on the map in real time to help commanders dispatch rescue forces to arrive at the scene as soon as possible.Finally,several key technology applications of geological hazard preventing system were prospected.

    Bridge monitoring system based on Internet of things technology
    Zheng LI,Sheng ZHANG,Luyu ZHANG,Yang ZHANG
    2018, 2(3):  104-110.  doi:10.11959/j.issn.2096-3750.2018.00070
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    The Internet of everything is the trend of today’s smart cities.With the rapid development of Internet of things technology,a good opportunity is provided to obtain real-time status information on important infrastructures.Aiming at the problem such as low monitoring efficiency,poor flexibility and rigorous testing results with traditional artificial bridge monitoring methods a bridge monitoring system based on the Internet of things technology was designed.A variety of sensors and cameras were used in the system to collect the data of bridge’s dynamic status in real-time,and the wireless multi-hop network was used to transfer the perception data to the bridge health monitoring cloud platform for further processing and analysis.Real-time monitoring,early warning,analysis and assessment of bridge safety conditions could be realized by the system,and is very important to the bridge safety engineering.

Copyright Information
Quarterly,started in 2017
Cpmpetent Unit:Ministry of Industry and Information Technology of the People's Republic of China
Sponsor:Posts & Telecom Press Co.,Ltd.
Publisher: China InfoCom Media Group
Editor:Editor Board of Chinese Journal on Internet of Things
Editor-in-Chief:YIN Hao
Executive Editor-in-Chief:ZHU Hongbo
Director:LI Caishan
Address:F2, Beiyang Chenguang Building, Shunbatiao No.1 Courtyard, Fengtai District, Beijing, China
ISSN 2096-3750
CN 10-1491/TP
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