探讨基于网络功能虚拟化(Network Function Virtualization,NFV)构架的5G局域网(Local Area Network,LAN)技术的应用价值,首先介绍NFV技术概念、网络构架及其优缺点,其次根据垂直行业局域网的业务需求引入5G LAN技术,再次介绍5G LAN中V...探讨基于网络功能虚拟化(Network Function Virtualization,NFV)构架的5G局域网(Local Area Network,LAN)技术的应用价值,首先介绍NFV技术概念、网络构架及其优缺点,其次根据垂直行业局域网的业务需求引入5G LAN技术,再次介绍5G LAN中VN组管理、二层和三层接入模型以及5G LAN流量转发技术,最后总结出基于NFV构架的5G LAN整体优点和仍需要进一步重点解决的问题。展开更多
For wired local area networks(LANs),their effectiveness and invulnerability are very critical.It is extraordinarily significant to evaluate the network performance effectively in the design of a reasonable network top...For wired local area networks(LANs),their effectiveness and invulnerability are very critical.It is extraordinarily significant to evaluate the network performance effectively in the design of a reasonable network topology and the performance improvement of the networks.However,there are many factors affecting the performance of the networks,and the relation among them is also complicated.How to evaluate the performance of the wired LANs more accurately has been a heavy challenge in the network research.In order to solve the problem,this paper presents a performance evaluation method that evaluates the effectiveness and invulnerability of the wired LANs.Compared to traditional statistical methods,it has the distinct advantage of being able to handle several dependent variables simultaneously and tolerates the measurement errors among these independent variables and dependent variables.Finally,the rationality and validity of this method are verified by the extensive experimental simulation.展开更多
IPX is one of most widely used protocol of datagram in LAN. It will have the great significance and find its wide use to design a powerful Electronic Mail System (EMAIL) on IPX protocol. This paper analyzes the access...IPX is one of most widely used protocol of datagram in LAN. It will have the great significance and find its wide use to design a powerful Electronic Mail System (EMAIL) on IPX protocol. This paper analyzes the access interface of the IPX protocol at first, then accounts for the design thought of the LAN electronic Mail Systrm and the design of ist upper four layers protocols and software on emphasis.展开更多
The multiple access fashion is a new resolution for the star-type local area network (LAN) access control and star-type optical fibre LAN. Arguments about this network are discussed, and the results are introduced.
As a promising solution to efficiently achieving fiber to the home （FTTH）, Ethernet passive optical network （EPON） is currently improved to provide intercommunication among customers, together with normal traffic ...As a promising solution to efficiently achieving fiber to the home （FTTH）, Ethernet passive optical network （EPON） is currently improved to provide intercommunication among customers, together with normal traffic delivery, via optical local area network emulation. It is a new research direction and expected to enhance the normal EPON performances. The purpose of this article is to review the state-of -the-art solutions to emulating optical local area networks （OLANs） over EPON. We discuss the major problems involved, e.g., network architecture, control mechanisms, and other potential enhancements. We also outline areas for future researches.展开更多
A method of transmission and monitoring in local area network(LAN) for the welding seam video information of binocular vision welding robot is proposed.This paper uses MPEG-4 video CODEC functions of DivX,video for Wi...A method of transmission and monitoring in local area network(LAN) for the welding seam video information of binocular vision welding robot is proposed.This paper uses MPEG-4 video CODEC functions of DivX,video for Windows(VFW) video capture technology,multi-threaded network communication idea and WinSock Socket in Visual C++ 6.0.In the end,client/server(C/S) communication model based on TCP/IP protocol has been developed.Experimental results show that the method can achieve the multiple welding seam video's real-time transmission in LAN.Moreover,the Canny operator is used to realize the edge feature extraction of the seam image which is captured by the client,so that the edge of the seam extracted is continuous and clear.展开更多
文摘探讨基于网络功能虚拟化(Network Function Virtualization,NFV)构架的5G局域网(Local Area Network,LAN)技术的应用价值,首先介绍NFV技术概念、网络构架及其优缺点,其次根据垂直行业局域网的业务需求引入5G LAN技术,再次介绍5G LAN中VN组管理、二层和三层接入模型以及5G LAN流量转发技术,最后总结出基于NFV构架的5G LAN整体优点和仍需要进一步重点解决的问题。
基金supported by the National Natural Science Foundations of China (Nos.61572435,61472305, 61473222)the Ningbo Natural Science Foundations(Nos. 2016A610035,2017A610119)+1 种基金the Complex Electronic System Simulation Laboratory (No.DXZT-JC-ZZ-2015015)the Joint Fund of China State Shipbuilding Corporation(No.6141B03010103)
文摘For wired local area networks(LANs),their effectiveness and invulnerability are very critical.It is extraordinarily significant to evaluate the network performance effectively in the design of a reasonable network topology and the performance improvement of the networks.However,there are many factors affecting the performance of the networks,and the relation among them is also complicated.How to evaluate the performance of the wired LANs more accurately has been a heavy challenge in the network research.In order to solve the problem,this paper presents a performance evaluation method that evaluates the effectiveness and invulnerability of the wired LANs.Compared to traditional statistical methods,it has the distinct advantage of being able to handle several dependent variables simultaneously and tolerates the measurement errors among these independent variables and dependent variables.Finally,the rationality and validity of this method are verified by the extensive experimental simulation.
文摘IPX is one of most widely used protocol of datagram in LAN. It will have the great significance and find its wide use to design a powerful Electronic Mail System (EMAIL) on IPX protocol. This paper analyzes the access interface of the IPX protocol at first, then accounts for the design thought of the LAN electronic Mail Systrm and the design of ist upper four layers protocols and software on emphasis.
文摘The multiple access fashion is a new resolution for the star-type local area network (LAN) access control and star-type optical fibre LAN. Arguments about this network are discussed, and the results are introduced.
基金the National Science Fund for Distinguished Young Scholars(Grant No.60725104)the National Basic Research Program of China(Grant No.2007CB310706)+2 种基金the National High Technology Research and Development Program of China(Grant Nos.2007AA01Z246 and 2007AA01Z227)the National Natural Science Foundation of China(Grant No.60672045)the Research Fund for the Doctoral Program of Higher Education(Grant No.20060614018)
文摘As a promising solution to efficiently achieving fiber to the home （FTTH）, Ethernet passive optical network （EPON） is currently improved to provide intercommunication among customers, together with normal traffic delivery, via optical local area network emulation. It is a new research direction and expected to enhance the normal EPON performances. The purpose of this article is to review the state-of -the-art solutions to emulating optical local area networks （OLANs） over EPON. We discuss the major problems involved, e.g., network architecture, control mechanisms, and other potential enhancements. We also outline areas for future researches.
基金the National Natural Science Foundation of China (No.61165008)the Natural Science Foundation of Jiangxi Province (No.20114BAB206004)the Project of Jiangxi Provincial Education Department(No.GJJ12038)
文摘A method of transmission and monitoring in local area network(LAN) for the welding seam video information of binocular vision welding robot is proposed.This paper uses MPEG-4 video CODEC functions of DivX,video for Windows(VFW) video capture technology,multi-threaded network communication idea and WinSock Socket in Visual C++ 6.0.In the end,client/server(C/S) communication model based on TCP/IP protocol has been developed.Experimental results show that the method can achieve the multiple welding seam video's real-time transmission in LAN.Moreover,the Canny operator is used to realize the edge feature extraction of the seam image which is captured by the client,so that the edge of the seam extracted is continuous and clear.
