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Concurrent streaming over heterogeneous wireless networks:technology and realization

The Journal of China Universities of Posts and Telecommunications 2018年第5期25卷 49-59,66页

作者： Zhu Xiaorong Dong Tiancai Wang Yong College of Telecommunication and Information Engineering Nanjing University of Posts and Telecommunications School of Electrical Engineering Nanjing Institute of Industry Technology

Some emerging services such as augmented/virtual reality need high data rates. Whereas,the existing 2 nd generation（ 2 G）,the 3 rd generation（ 3 G） and the 4 th generation（ 4 G） networks cannot provide such high transmission rates. To meet these requirements,the technology and the realization of a‘virtual super terminal＇that can perform the concurrent streaming of video via the cooperation of multiple heterogeneous terminals are introduced. The proposed algorithm uses concurrent streaming scheduling algorithm,buffer overhead and packet delivery method,and packet loss prevention and recovery method to improve the performances of the *** measurements show that compared with the scheme without cooperative transmission the proposed design can significantly increase system throughput and decrease packet delay.

关键词： heterogeneous networks virtual terminal muhi-termlnal cooperation video streaming

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Solutions to Support Smart Substation Project

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Electricity 2014年第5期25卷 29-33页

作者： Liu Hongjun Chen Yuansheng Sun Yimin CYG SUNRUI Co. Ltd

Based on the analysis and inductive research on the current problems, the solution to support the smart substation project is put forward to improve the construction efficiency of a smart substation, guarantee safety of operation and maintenance, and meet requirements for the design, commissioning, and operation and maintenance of a smart substation. The solution is to add innovative thoughts of "integration on design and configuration," "SCD file decoupling," "visualization of virtual secondary circuit" and "SCD file control" into the PRS-7000 series tool. As an integration tool for the design and configuration of a smart substation, PRS-7001 has effectively inherited the knowledge and operation practice of the design institute by applying a typical design template and a virtual terminal connected database. The PRS-7002 secondary circuit visual tool can display the virtual circuit connection and configuration of the SCD files in a multi-function and multiperspective way. Besides, it can effectively support commissioning, defects eliminating and overhauling. The PRS- 7003 SCD control tool has not only the off-line control functions for version management and tracing, inspection and warning for information changes and scope definition for upgrading of devices, but also the functions of process level configuration for the device and CRC online comparison.

关键词： smart substation SCD virtual terminal visualization online proofreading

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维普期刊数据库

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Research on Plug and Play of IED in Smart Substations

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Electricity 2014年第5期25卷 34-37,50页

作者： Chen Fufeng Lan Jinbo Zhao Qian Guodian Nanjing Automation Co. Ltd

This paper focus on the problems with smart substations such as long period of construction and design, difficulties of debugging and maintenance. According to the whole process of designing, construction, operation and maintenance of smart substations and characteristics of IED, the plug and play technology on the whole life cycle of a smart substation is proposed. Standardized virtual terminal description is used in matching the signals, standardized definitions and order of virtual terminal is used in connecting the signals, and management server is used in managing IED failures and backup. The plug and play technology can effectively improve the efficiency of design, construction, operation and maintenance of smart substations.

关键词： smart substation IED plug and play whole-life cycle virtual terminal

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维普期刊数据库

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