Dr. Xiang Yun Profile

Dr. Xiang Yun

at FiberHome Telecommunication Technologies Co Ltd

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Publications (12)

Proceedings Article | 29 October 2009 Paper

Technique analysis of T-MPLS OAM and MPLS-TP OAM

Xiang Yun, Zhong Wang

Proceedings Volume 7514, 751415 (2009) https://doi.org/10.1117/12.843167

KEYWORDS: Magnetoencephalography, Artificial intelligence, Signal detection, Networks, Signal attenuation, Telecommunications, Diagnostics, Standards development, Environmental sensing, Defect detection

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OAM plays an important role in PTN technology. The main function of OAM is check defect before abnormal event. The bit errors which could be corrected or time deviation could be isolated within a certain range. It dose not disturb network operation. And therefore, it ensure carrier to fulfill QoS commitment and reach SLA subscription.T-MPLS is connection-oriented packet transport technology. Connection-oriented means it can provide carrier-level service and must have equal OAM (Operation, Administration and Maintenance) function of traditional transport network. OAM mechanism becomes key technology of T-MPLS. OAM function is very important to telecom network. It's especially import to network which has QoS. OAM could simplify network operation, check network performance and reduce operation cost. Firstly, the functional requirements of T-MPLS OAM and MPLS-TP OAM are analyzed. The similarity of T-MPLS OAM and MPLS-TP OAM is founded. By deep analysis the mechanism of T-MPLS OAM, it shows that the OAM is import for PTN. Then OAM technique of T-MPLS and MPLS-TP is analyzed in detail. At last, analysis of commonality is carried out on function types. Domain reference model and nesting-technique shows the consistency of both OAM functions. Both of T-MPLS and MPLS-TP introduce OAM nesting. Eight MEG Levels (from 0 to 7) are available to accommodate different network deployment scenarios. In order to distinguish OAM packets of nested MEGs, each MEP tunnels incoming OAM packets by incrementing the MEL in the source direction and decrementing it in the sink direction. Each MEP/MIP generates and processes OAM packets at the MEL=0, while other OAM packets are forwarded with traffic. It's very simple and high efficiency method. By comparing the functions of T-MPLS OAM and MPLS-TP OAM, even there are few differences on PTN implementation detail; the OAM mechanism and framework are basically same. Both of them meet the requirements of carrier-grade OAM. They has important role in their realization process. As long as posses powerful OAM capability, PTN has more competitiveness in the future market.

Proceedings Article | 29 October 2009 Paper

Research on the key technology and application of the packet transmission network

Xiang Yun, Zhong Wang

Proceedings Volume 7514, 75140Z (2009) https://doi.org/10.1117/12.843165

KEYWORDS: Networks, Clocks, Time division multiplexing, Asynchronous transfer mode, Switching, Statistical multiplexing, Switches, Network architectures, Technologies and applications, Telecommunications

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In proportion to the rapid development of telecommunication service, Telecom Operators already have made a strategic transition from "Network, Communication Operators" into "integrated information service provider" to provide customer with varied information service, such as the BT "21st century plan", "Next" plan proposed by France Telecom, FNE and BMS plan by Australia Telstra, RANE Programs by NTT. Domestic Carries also made strategic transition plans. And the priority of network transition is to find the way to build a unified and integrated network supporting carrier-grade Ethernet service also compatible with the conventional network service. The division of the service results in the Packet transmission, namely packet technology, makes Packet-based Transmission Network keeping the virtues of transmission network. The virtues are good scalability, varied operation and maintenance, high-speed protection switching, connection-oriented feature, and building up connection with NMS. At the same time, it adds some characteristics to adapt the statistical multiplexing in the packet service, for instance: connection-oriented label switching, QoS mechanism, dynamic and flexible control plane. The Packet Transmission Network (PTN) can be divided into four layers: packet transmission channel layer (PTC), packet transmission path layer (PTP), and optional packet transmission section Layer (PTS) and physical layer. The key technologies of PTN are as follows: the connection-oriented based label transmission and the statistical multiplexing on packet switching. The use of layer and sub-domain is to provide good scalability. Supporting for fault detection and performance testing and other Operation, Management and Maintenance (OAM) function, linear protection switching, ring protection, dynamics survival technology of pre-placed re-route, QoS, circuit emulation for TDM service, ATM based on PWE3 technique, and MAC layer or physical layer based packet clock synchronization. The application PTN could be convergence of packet service in MAN, such ads DSLAM backhauling, wireless Backhauling and so on. PTN can also take replace the core router in the core network to carry out the high efficient transmission of packet service.

Proceedings Article | 29 October 2009 Paper

Research of application mode for FTTX technology

Zhong Wang, Xiang Yun

Proceedings Volume 7514, 75140X (2009) https://doi.org/10.1117/12.843174

KEYWORDS: Fiber to the x, Ranging, Networks, Optical fibers, Data modeling, Copper, Broadband telecommunications, Local area networks, Telecommunications, Instrument modeling

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Proceedings Article | 19 November 2008 Paper

The research of MSTP service encapsulation based on SDH

Xiang Yun, Zhong Wang

Proceedings Volume 7137, 71371F (2008) https://doi.org/10.1117/12.804273

KEYWORDS: Green fluorescent protein, Head, Virtual colonoscopy, Data communications, Associative arrays, Signal processing, Roads, Networks, Switching, Wavelength division multiplexing

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Proceedings Article | 11 November 2008 Paper

The research and application of Ethernet over RPR technology

Xiancheng Feng, Xiang Yun

Proceedings Volume 7136, 713645 (2008) https://doi.org/10.1117/12.804272

KEYWORDS: Networks, Reliability, Telecommunications, Switching, Head, Data modeling, Switches, Stars, Signal processing, Roads

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Proceedings Article | 19 November 2007 Paper

Research on the model of home networking

Xiang Yun, Xiancheng Feng

Proceedings Volume 6784, 67842Q (2007) https://doi.org/10.1117/12.743633

KEYWORDS: Home networking, Instrument modeling, Networks, Telecommunications, Broadband telecommunications, Interfaces, Home entertainment, Information security, Network security, Technologies and applications

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It is the research hotspot of current broadband network to combine voice service, data service and broadband audio-video service by IP protocol to transport various real time and mutual services to terminal users (home). Home Networking is a new kind of network and application technology which can provide various services. Home networking is called as Digital Home Network. It means that PC, home entertainment equipment, home appliances, Home wirings, security, illumination system were communicated with each other by some composing network technology, constitute a networking internal home, and connect with WAN by home gateway. It is a new network technology and application technology, and can provide many kinds of services inside home or between homes. Currently, home networking can be divided into three kinds: Information equipment, Home appliances, Communication equipment. Equipment inside home networking can exchange information with outer networking by home gateway, this information communication is bidirectional, user can get information and service which provided by public networking by using home networking internal equipment through home gateway connecting public network, meantime, also can get information and resource to control the internal equipment which provided by home networking internal equipment. Based on the general network model of home networking, there are four functional entities inside home networking: HA, HB, HC, and HD. (1) HA (Home Access) - home networking connects function entity; (2) HB (Home Bridge) Home networking bridge connects function entity; (3) HC (Home Client) - Home networking client function entity; (4) HD (Home Device) - decoder function entity. There are many physical ways to implement four function entities. Based on theses four functional entities, there are reference model of physical layer, reference model of link layer, reference model of IP layer and application reference model of high layer. In the future home network should have broadband network function, public network function, and compositive multi-service and multi-application function, etc.

Proceedings Article | 19 November 2007 Paper

Implementation and measurement of cluster management for network switch

Xian-cheng Feng, Xiang Yun

Proceedings Volume 6784, 67841J (2007) https://doi.org/10.1117/12.743436

KEYWORDS: Switches, Networks, Chemical mechanical planarization, Local area networks, Electronics engineering, Telecommunications, Logic, Switching, Communication theory, Network architectures

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Proceedings Article | 19 November 2007 Paper

Downstream traffic control policy of EPON based on LLID

Xiancheng Feng, Xiang Yun, Liu Yang

Proceedings Volume 6783, 67832K (2007) https://doi.org/10.1117/12.743541

KEYWORDS: Broadband telecommunications, Networks, Time division multiplexing, Optical networks, Video, Control systems, Electronics engineering, Telecommunications, Cobalt, Passive optical networks

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Proceedings Article | 6 December 2005 Paper

The research of FTTH system's network architecture and protocol

Xian-cheng Feng, Zhong Wang, Xiang Yun

Proceedings Volume 6022, 60223B (2005) https://doi.org/10.1117/12.636771

KEYWORDS: Fiber to the x, Networks, Televisions, Network architectures, Switches, Video, Analog electronics, Green fluorescent protein, Internet, Time division multiplexing

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Proceedings Article | 15 April 2004 Paper

Network management technology for Ethernet switch based on cluster system

Xian-Cheng Feng, Xiang Yun

Proceedings Volume 5282, (2004) https://doi.org/10.1117/12.523502

KEYWORDS: Switches, Networks, Error control coding, Data transmission, Local area networks, Chemical mechanical planarization, Manufacturing, Telecommunications, Automatic control, Integration

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Proceedings Article | 15 April 2004 Paper

The future direction of ITU-T SG4 and application of correlative technologies

Xiang Yun

Proceedings Volume 5282, (2004) https://doi.org/10.1117/12.523471

KEYWORDS: Networks, Interfaces, Standards development, Data modeling, Telecommunications, Seaborgium, Hybrid circuits, Nomenclature, Data communications, Network architectures

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Proceedings Article | 15 April 2004 Paper

A new management system for Ethernet passive optical networks

Xiang Yun, Xian-Cheng Feng

Proceedings Volume 5282, (2004) https://doi.org/10.1117/12.523459

KEYWORDS: Passive optical networks, Data modeling, Broadband telecommunications, Network architectures, Interfaces, Human-machine interfaces, Networks, Time division multiplexing, Information security, Network security

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Showing 5 of 12 publications

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