为适应TD-LTE(Time Division Long Term Evolution)业务的承载需求,对移动城域传送网现状、TD-LTE主要技术特点及其承载需求、面向TD-LTE移动城域传送网的技术选择进行了分析。指出面向TD-LTE移动城域传送网应全程采用PTN(Packet Transp...为适应TD-LTE(Time Division Long Term Evolution)业务的承载需求,对移动城域传送网现状、TD-LTE主要技术特点及其承载需求、面向TD-LTE移动城域传送网的技术选择进行了分析。指出面向TD-LTE移动城域传送网应全程采用PTN(Packet Transport Network)技术组网,以PTN核心层支持L3-VPN(Layer3-Virtual PrivateNetwork)方案作为其具体组网模式,在核心、汇聚层引入OTN(Optical Transport Network)技术,以OTN+PTN方式组建城域传送网。结合当前移动城域传送网现状,提出面向TD-LTE的移动城域传送网的网络结构。给出了面向未来移动城域传送网接入、汇聚和核心层的建设思路,以期指导中国移动城域传送网建设。展开更多
With the rapid development of optical elements with large capacity and high speed, the network architecture is of great importance in determing the performance of wavelength division multiplexing passive optical netwo...With the rapid development of optical elements with large capacity and high speed, the network architecture is of great importance in determing the performance of wavelength division multiplexing passive optical network （WDM-PON）. This paper proposes a switching struc^re based on the tunable wavelength converter （TWC） and the ar- rayed-waveguide grating （AWG） for WDM-PON, in order to provide the function of opitcal virtual private network （OVPN）. Using the tunable wavelength converter technology, this switch structure is designed and works between the optical line terminal （OLT） and optical network units （ONUs） in the WDM-PON system. Moreover, the wavelength assignment of upstream/downstream can be realized and direct communication between ONUs is also allowed by privite wavelength channel. Simulation results show that the proposed TWC and AWG based switching structure is able to achieve OVPN function and to gain better performances in terms of bite error rate （BER） and time delay.展开更多
基金National Natural Science Foundation of China(No.61171045)Program for New Century Excellent Talents in University(No.NCET-13-0099)+1 种基金National High-tech R&D Program of China(No.2012AA011304)National Key Technology R&D Program(No.2012BAH06B03)
文摘为适应TD-LTE(Time Division Long Term Evolution)业务的承载需求,对移动城域传送网现状、TD-LTE主要技术特点及其承载需求、面向TD-LTE移动城域传送网的技术选择进行了分析。指出面向TD-LTE移动城域传送网应全程采用PTN(Packet Transport Network)技术组网,以PTN核心层支持L3-VPN(Layer3-Virtual PrivateNetwork)方案作为其具体组网模式,在核心、汇聚层引入OTN(Optical Transport Network)技术,以OTN+PTN方式组建城域传送网。结合当前移动城域传送网现状,提出面向TD-LTE的移动城域传送网的网络结构。给出了面向未来移动城域传送网接入、汇聚和核心层的建设思路,以期指导中国移动城域传送网建设。
基金supported by the National High Technical Research and Development Program of China(No.2012AA050804)
文摘With the rapid development of optical elements with large capacity and high speed, the network architecture is of great importance in determing the performance of wavelength division multiplexing passive optical network （WDM-PON）. This paper proposes a switching struc^re based on the tunable wavelength converter （TWC） and the ar- rayed-waveguide grating （AWG） for WDM-PON, in order to provide the function of opitcal virtual private network （OVPN）. Using the tunable wavelength converter technology, this switch structure is designed and works between the optical line terminal （OLT） and optical network units （ONUs） in the WDM-PON system. Moreover, the wavelength assignment of upstream/downstream can be realized and direct communication between ONUs is also allowed by privite wavelength channel. Simulation results show that the proposed TWC and AWG based switching structure is able to achieve OVPN function and to gain better performances in terms of bite error rate （BER） and time delay.
