基于标签的光突发交换网络

先进的OBS(optical burst switching)技术和MPLS的强大控制能力结合产生了一种灵活紧凑的IP/DWDM集成模型LOBS.(labeled optical burst switching).它充分发挥了电子处理的高智能和光子交换的大容量优势,是未来数据网络的理想光交换方案.文中从OBS技术的优越性开始,分析了LOBS实现的网络结构和控制协议,探讨了LOBS流量工程和网络生存性.     

LOBS技术研究

光突发交换技术(OBS)是一种新出现的光交换技术．它综合了光波长路由和光分组交换的优点。本文的LOBS又将MPLS和OES这两大技术结合在一起，利用MPLS强大的控制能力为OBS网络在QoS，流量工程和网络恢复等方面提供良好的支持。文章根据LOBS的基本原理，提出并详细阐述了它的网络构成和工作机制．最后指出了LDBS网络在流量工程和同络生存性方面相对其他光网络的优越性。     

光标签突发包交换技术

光标签突发包交换是一种新出现的光交换技术。它把基于标签转发的速度优势、QoS(服务质量)保证及流量工程与光突发包交换控制机制(更长的转发数据单元、光网络边缘缓存、带外信令控制)结合起来。全面介绍了这种光交换技术，重点描述了其网络结构。另外，还对其所涉及到的关键技术进行了讨论，并结合下一代互联网的技术趋势，对光标签突发包交换的前景进行了评价。     

未来光网络中的LOBS技术

光突发交换技术和MPLS的迅速发展产生了一种更加灵活、紧凑的IP/DWDM集成方案LOBS。它综合了光路交换和光分组交换的优点及最先进的MPLS的强大控制能力,是下一代因特网的理想光交换方案,并且为光分组交换的实现奠定了基础。文中在全面介绍LOBS交换网络结构和控制协议的基础上,分析了LOBS流量工程和QoS机制,最后初步讨论了LOBS时延和阻塞率特性。     

未来光网络中的LOBS技术

光突发交换技术和MPLS的迅速发展产生了一种更加灵活、紧凑的IP／DWDM集成方案LOBS。它综合了光路交换和光分组交换的优点及最先进的MPLS的强大控制能力，是下一代因特网的理想光交换方案，并且为光分组交换的实现奠定了基础。文中在全面介绍LOBS交换网络结构和控制协议的基础上，分析了LOBS流量工程和QoS机制，最后初步讨论了LOBS时延和阻塞率特性。     

LOBS技术研究

光突发交换技术(OBS)是一种新出现的光交换技术,它综合了光波长路由和光分组交换的优点。本文的LOBS又将MPLS 和OBS这两大技术结合在一起,利用MPLS强大的控制能力为OBS网络在QoS、流量工程和网络恢复等方面提供良好的支持。文章根据LOBS的基本原理,提出并详细阐述了它的网络构成和工作机制,最后指出了LOBS网络在流量工程和网络生存性方面相对其他光网络的优越性。     

基于MPLS的光突发交换技术

介绍了这种网络的结构以及特点,重点讨论了目前国内外在LOBS研究中的最新进展,以及MPLS的扩展(GMPLS)对传统OBS的支持和改进。     

基于GMPLS的光突发交换网络的研究

作为下一代互联网关键技术之一的光突发交换(OBS)技术已经受到业界的广泛关注.但是在网络中还需要一个成熟的控制面技术支持,为此提出了了基于GMPLS控制面的OBS网络体系,并对GMPLS体系结构的关键技术进行了介绍.     

基于LOBS的WDM光网络的组播研究

光波分复用(WDM)网络是一种广泛应用的光网络,而在WDM网络中实现组播应用是光网络的一个研究热点.文章介绍了这种网络的结构以及特点,重点讨论了目前国内外在WDM网络组播研究中的最新进展,并提出了基于LOBS的WDM网络的组播协议.     

基于GMPLS的光突发交换网络的研究

文章基于通用多协议标签交换(GMPLS)的光突发交换(OBS)网络的体系结构,研究了如何将GMPLS引入OBS,并使两者能够高效协调地工作.重点讨论了GMPLS与OBS技术相结合的网络(GMPLS-based OBS)的各种关键技术和解决机制.特别在处理突发数据包(BDP)冲突竞争机制上提出了新的方法.最后,指出了GMPLS-based OBS进一步研究的方向.     

LOBS交换光网络

把先进的OBS技术与MPLS的强大控制能力给合形成IP/DWDM集成模型LOBS,充分发挥了电子处理的高智能和光子交换的大容量优势,是未来数据网络的理想光交换方案。文章介绍了OBS技术的优越性,分析实现LOBS的网络结构和控制协议,探讨LOBS流量工程和网络生存性。     

区分服务模型下LOBS网冲突解决方案研究

光标签突发交换(LOBS)是一种新出现的光交换技术,而LOBS网络中因突发包竞争导致数据丢失。文章介绍了这种网络的结构以及特点,区分服务模型下冲突解决关键技术,并提出了一种基于区分服务模型下的LOBS网络冲突解决新方案。     

STOLAS: switching technologies for optically labeled signals

GMPLS-based labeled optical burst switching (LOBS) networks are being considered as the next-generation optical Internet. GMPLS includes wavelength switching next to label and fiber (space) switching. We present a new concept of optically labeling bursts of packets suitable for LOBS networks supported by GMPLS. It is based on angle modulation, which enables control information to modulate the phase or frequency of the optical carrier, while payload data are transmitted via intensity modulation (IM). In particular, the optical label is orthogonally modulated, with respect to the payload, using either frequency shift keying or differential phase shift keying. We present a performance analysis of the modulation schemes by means of simulations where the influence of the payload IM extinction ratio and laser linewidth are investigated. In addition, the transmission performance of an IM/FSK combined modulated signal is experimentally validated at 10 Gb/s, demonstrating at the same time an FSK label swapping operation. Finally, a suitable optical label-controlled switch design is proposed that takes advantage of these novel labeling techniques, and efficiently combines widely tunable, fast switching lasers and SOA-MZI wavelength converters with an arrayed waveguide grating router.     

光突发交换网络中的突发分组组装策略

光突发交换(OBS)技术集成光电路交换和光分组交换的优势,能满足现有大容量、高速率的多媒体信息交换与传输,将成为下一代光IP骨干网的核心技术。本文详细论述了OBS网络中的关键技术———突发分组的组装技术的各种策略与实现方式,指出具有良好QoS保证又可降低可操控性的突发组装策略将成为最佳选择。     

IP over WDM 网络中的QoS机制

本文讨论了IP over WDM网络中的三种不同的光交换技术并分别对这三种交换技术中的QoS机制做了比较和分析。     

Multiservice optical network: main concepts and first achievementsof the ROM program

With the tremendous introduction of internet protocol (IP) applications, the quality-of-service (QoS) becomes more and more an emergent issue. Concrete solutions can be adopted (IP/ATM/SONET/WDM) opening the way to new types of applications (interactive applications through the exploitation of voice and video) in a short-term approach. However, all the telecommunication community tries to provide new solutions offering capacity and flexibility in a simpler manner. In this paper, we present the concepts of a multiservice optical network studied in the framework of a French Research Program. The QoS could be offered through the combined exploitation of electronic memories in the edges and optical resources in the core of the optical network and through the coexistence of different types of connections. In particular, the traffic shaping in the edges is highlighted through simulation and demonstrates the real impact of this function to maintain the logical performance at its highest level. To propose concrete solutions for its implementation, two network scenarios are proposed. The first one, for the backbone, exhibits a novel optical packet switching architecture taking benefit of the massive presence of wavelengths to solve the contention. The second one, for the metro, shows a second optical packet switching architecture really adapted to the cost constraints (upgradability, compactness, granularity)     

Performance Evaluation of Multi-Layer Traffic Engineering Enabled IP-over-ION Networks

Recently, network operators started implementing traffic engineering (TE) techniques in their network. These TE techniques typically involve a single layer (for example, the IP/multi-protocol label switching (MPLS) layer). Although single-layer TE (STE) can improve the network performance (e.g., throughput, quality of service (QoS)), this improvement is bounded by the available capacity in that network layer. The evolution towards intelligent optical networks (IONs) allows further increasing the improvements achievable by the TE techniques, by involving more than one layer in the TE actions. Multi-layer TE (MTE) occupies network resources in a smart way and optimizes the QoS since it dynamically reconfigures the logical topology in the upper layer by properly updating the optical connections in the underlying optical layer. However, the performance of the network is impacted by the configuration scheme adopted by MTE. Therefore, in this paper, we focus on analyzing the influence of the MTE configuration scheme on the MTE behavior, and evaluate the network performance by studying simulation results obtained from a realistic IP-over-ION network.     

Distributed Reservation Protocol and QoS Method in WR-OBS System

1IntroductionOptical Burst Switching (OBS)[1 ~4]provides a feasi-ble paradigm for Internet Protocol (IP) over Wave-length-Division Multiplexing ( WDM) integration[5 ~10],which has been the focus of intense investigation owingtoits flexibilityin utilizingthe terahertz bandwidth of asingle fiber andits capabilitytosupport transparent datatransmissions. However , with the emergence of allkinds of applications such as data ,voice ,the next-gen-eration network must also be designedto provide …