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Chinese Automation Congress (CAC)

作者： Shuo Tian Yihong Hu Beijing Key Laboratory of Network System Architecture and Convergence School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing China

The Industrial Internet is a kind of infrastructure that is closely connected with people, industries, and network, and it can realize the low cost and high efficiency of intelligent production. Promoting the convergence of Information Technology (IT) and Operation Technology (OT) is the foundation to realize the Industrial Internet. However, IT and OT exist independently and cannot be unified all the time. How can they work together effectively? We describe the model of OPC Unified architecture (OPC UA) and Time-Sensitive networking (TSN) in this paper that will effectively solve the problem of IT and OT convergence. We also compare three TSN models, discuss which obstacles to IT and OT convergence will be addressed by OPC UA TSN in detail, and analyze the features of OPC UA TSN. It proves that OPC UA TSN will play an important role in the process of IT and OT convergence.

关键词： Protocols convergence Internet Bridges Industries Interoperability Production facilities

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An Efficient Configuration Scheme of OPC UA TSN in Industrial Internet

An Efficient Configuration Scheme of OPC UA TSN in Industria...

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Chinese Automation Congress (CAC)

作者： Zefeng Zhou Guochu Shou Beijing Key Laboratory of Network System Architecture and Convergence School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing China

TSN plays an important role in industrial Internet due to its bounded low latency and high reliability. In order to have TSN worked in practical applications, it is urgent to study the configuration of TSN. Based on the standard of IEEE 802.1 Qcc, we propose a configuration scheme of OPC UA TSN, describe the functionality and procedure of the scheme in detail. We verify that our configuration scheme can satisfy the bounded delay requests of periodic time-sensitive data flows.

关键词： Delays Switches Standards Real-time systems Protocols Jitter Job shop scheduling

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Queue-Sensing-Based CSAT: A Downlink Transmission Scheme for LTE-M in Unlicensed Spectrum

Queue-Sensing-Based CSAT: A Downlink Transmission Scheme for...

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作者： Zelin Gong Ying Wang Tao Luo Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing Laboratory of Advanced Information Networks Beijing University of Posts and Telecommunications

A shortage of licensed spectrum is a major hindrance to the capacity of Long Term Evolution for Metro(LTE-M) to carry urban rail transit services at *** by LTE-Unlicensed(LTE-U) offloading some of data traffic transmitted in licensed spectrum by accessing the unlicensed 5 GHz frequency band, we propose a queue-sensing-based Carrier Sensing Adaptive Transmission(CSAT) scheme for LTE-M in unlicensed spectrum based on *** scheme calculates the minimum amount of data that should be transmitted during current transmission duration by queue length at the beginning of each LTE-U cycle, according to which, LTE-U adjusts its duty cycle to meet the requirement of LTE-M *** paper focuses on the downlink transmission scheme for LTE-M in unlicensed spectrum, and verifies its performance by simulation, which tells that Queue-sensing-based CSAT will not only provide a reliable transmission for LTE-M services, but also maximize the fairness of channel occupancy in unlicensed spectrum.

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A Service-Based Intelligent Time-Domain and Spectral-Domain Flow Aggregation in IP-over-EON Based on SDON

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ZTE Communications 2019年第3期17卷 56-62页

作者： NI Dong LI Hui JI Yuefeng LI Hongbiao ZHU Yinan Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and TelecommunicationsBeijing 100876China Wireline Product Operation Division ZTE CorporationShenzhenGuangdong 518057China

The rapid growth of IP traffic has contributed to wide deployment of optical devices in elastic optical ***,the passband shape of wavelength selective switches(WSSs)that are used in reconfigurable optical add-drop multiplexer(ROADM)/optical cross connect(OXC)is not ideal,causing the narrowing of *** narrowing will lead to signal ***,guard-bands need to be inserted between adjacent paths which will cause the waste of *** this paper,we propose a service-based intelligent aggregation node selection and area division(ANS-AD)*** the rationality of the aggregation node selection,the ANS-AD algorithm chooses the aggregation nodes according to historical traffic information based on big data *** the ANS-AD algorithm divides the topology into areas according to the result of the aggregation node *** on the ANS-AD algorithm,we propose a time-domain and spectral-domain flow aggregation(TS-FA)*** the purpose of reducing resources'waste,the TS-FA algorithm attempts to reduce the insertion of guard-bands by time-domain and spectral-domain flow ***,we design a time-domain and spectral-domain flow aggregation module on software defined optical network(SDON)***,a simulation is designed to evaluate the performance of the proposed algorithms and the results show that our proposed algorithms can effectively reduce the resource waste.

关键词： IP-over-EON time-domain spectral-domain flow aggregation big data analysis SDON

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Inverse Design of Photonic Crystal Nanobeam Cavity Structure via Deep Neural network

Inverse Design of Photonic Crystal Nanobeam Cavity Structure...

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Asia Communications and Photonics Conference

作者： Jianjun Hao Lei Zheng Daquan Yang Yijun Guo Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing 100876 P. R. China

We propose a deep learning framework to solve the inverse design problem of one-dimensional photonic crystal nanobeam cavity structure. After training, we obtained an effective solution to the inverse design.

ISBN: (纸本)9781943580705

关键词： Genetic algorithms Inverse problems Nanophotonics Neural networks Photonic crystal cavities Quantum optics

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Cluster-Based Resource Selection Scheme for 5G V2X

Cluster-Based Resource Selection Scheme for 5G V2X

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IEEE Conference on Vehicular Technology (VTC)

作者： Jiaqi Zhao Xinxin He Huan Wang Xufei Zheng Jie Lv Tao Luo Xiaolin Hou Beijing Key Laboratory of Network System Architecture and Convergence Beijing China Beijing Laboratory of Advanced Information Network Beijing University of Posts and Telecommunications Beijing China NTT DOCOMO Beijing Labs Beijing China

The vehicle to everything communication in long term evolution (LTE V2X) supports vehicle-to-vehicle (V2V) communication directly via PC5 interface. In LTE V2X mode 4, vehicles autonomously select radio resources based on a distributed scheduling scheme. However, some researches show that this sensing based semi-persistent scheduling (SPS) scheme incurs low transmission reliability due to resource contention especially when the transmissions are aperiodic. Therefore, a cluster-based resource selection scheme is proposed to reduce the resource collision, where resources are divided into different resource sets and each cluster head selects its available resource set based on measurement. Simulation results show that, compared with LTE V2X mode 4, the proposed scheme has better performance for both periodic and aperiodic traffic.

关键词： Sensors Long Term Evolution Interference Vehicle-to-everything Energy measurement Indexes Vehicular ad hoc networks

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Proposal generation by learning visual relationship 4

Proposal generation by learning visual relationship

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4th IEEE International Conference on Computer and Communications, ICCC 2018

作者： Dong, Yahui Zhou, Wenli Beijing Laboratory of Advanced Information Networks Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781538683392

Proposal generation aims to generate bounding box candidates that contain objects. The key for proposal generation is to produce very few bounding boxes that can achieve high recall. In this paper, we propose a novel proposal generation algorithm which introduces visual relationship into proposal generator. The intuition is that objects always exist in co-occurrence, which can be clues for generating proposals coherently. Specifically, it is achieved by concatenating a novel relationship network with region proposal network, and jointly training them end-to-end. Experimental results on Visual Relationship demonstrate that our method can achieve better performance compared with state-of-the-art, especially when evaluating at the top limited number of generated proposals. © 2018 IEEE.

关键词： Object detection

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CSI-based device-free indoor localization using convolutional neural networks 4

CSI-based device-free indoor localization using convolutiona...

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4th IEEE International Conference on Computer and Communications, ICCC 2018

作者： Cai, Chenwei Deng, Li Li, Shufang Beijing Laboratory of Advanced Information Networks Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781538683392

Device-free indoor localization is an emerging technology enabling the localization of a target without equipped any devices in an area of interest, which is widely applied in the field of security and home care. Interrupted by the multipath effect, previous Received Signal Strength (RSS) based localization systems often suffer from low accuracy when localization. Motivated by this, we explore the stability of channel state information (CSI) in IEEE 802.11n and propose a device-free indoor localization system based on CSI through convolutional neural networks (CNN), where we combine the space diversity, time diversity and frequency diversity of CSI to design the more abundant localization features. Moreover, we use a denoising method to improve the efficiency of extracting features from the human body's influence on the CSI and improve the accuracy of the localization. The experiment demonstrates that the average accuracy of the proposed method could reach more than 97% in a typical office. © 2018 IEEE.

关键词： Channel state information

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Geographic Routing Based on Social Dynamic Features Aware in Vehicle Social network 15

Geographic Routing Based on Social Dynamic Features Aware in...

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15th International Symposium on Wireless Communication systems, ISWCS 2018

作者： Liao, Qing Zhang, Jingyi Beijing Key Laboratory of Network System Architecture and Convergence Beijing Laboratory of Advanced Information Networks Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781538650059

Vehicular ad-hoc network has the characteristics of Delay Tolerant network and social network. In this background, we take the social attributes of Delay Tolerant network as starting point and study the macroscopic dynamic features, micro dynamic features and dynamic contact features of vehicles. In this paper, we proposed a geographic multicast routing based on social dynamic features aware which solves messages transmission problems in vehicular ad hoc network. Different from the existing mobility-aware geocast algorithm, our algorithm takes into account not only the relationships between vehicles mobility and geographical location, but also the contact features between vehicles and destination areas. Finally, it is proved that our algorithm is superior to the existing mobilityaware geocast algorithm in term of delivery rate, network overhead and average delay by the real mobile data model simulation in large vehicular ad-hoc network. The results prove the effectiveness of our algorithm, and the routing protocol we proposed is suited for large urban vehicular ad hoc networks. © 2018 IEEE.

关键词： Vehicular ad hoc networks

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Robustness analysis of interdependent PV grids and communication network based on complex network

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The Journal of China Universities of Posts and Telecommunications 2018年第5期25卷 60-66页

作者： Fan Xinwen Wen Xiangming Lu Zhaoming Sun Chunlei Han Xi School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing Laboratory of Advanced Information Networks Beijing University of Posts and Telecommunications Electronic Information Engineering North China University of Technology

Currently,the photovoltaic（ PV） cloud network is an important research point in energy Internet. From the perspective of the robustness analysis of PV cloud network,traditional robustness index,the relative size of the giant connected component before and after the cascading,which is focused on the giant component,is not appropriate for the distributed PV network because of the big difference between PV generators and large power grid. In this paper,a new index is proposed,the minimum removed nodes number（ MRNN）,which can make the entire system collapse,to evaluate the robustness of PV cloud network system. Simulation results show that MRNN can clearly indicate the system robustness under different parameters.

关键词： cascading failure interdependent system minimum removed nodes number （MRNN）

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