基于ROF技术的EPON和WiMAX融合方案的研究

从接入网看,光纤无线融合是一种很有前途的架构,文章提出了一种基于光纤无线电(ROF)技术的以太网无源光网络(EPON)和全球微波接入互操作性(WiMAX)合方案,能够同时在光纤中传输EPON基带信号和WiMAX无线射频信号.在此基础上,文章详细说明了该方案的一些特点,包括数据的上下行传输、冗余保护、漫游等问题.     

基于固网移动网融合(FMC)的宽带接入网系统

文章提出了3种WiMAX无线网络与EPON系统融合架构,融合系统同时具有光网络的高带宽和无线网络的灵活性.根据融合系统的具体架构,讨论了带宽分配,数据转发等系统控制和操作的优化处理.WiMAX与EPON的融合实现了固网移动网在接入网系统中的融合,为新一代宽带接入网技术提供了一个可行方案.     

基于EPON和WiMAX的三网融合方案的设计

三网融合是通信发展的必然趋势,由于国内不同地区所处的地理环境不同,在三网融合中所用到的技术也有所不同。EPON和WiMAX是目前比较成熟的两种宽带接入技术,它们有各自的优点,这两种技术相互结合则能满足不同场景下网络需求的建设,推动三网融合的快速发展。通过结合实际工程分析了不同场景下运用这两种技术建设通信网络的设计方案。     

EPON与GPON的融合接入方案

分析了作为光纤接入的无源光网络EPON和GPON融合的意义,以及相比传统单一接入方式的优势,阐述了三种基于EPON和GPON的宽带接入融合系统的结构和相应的控制机制.在此基础上,指出了EPON和GPON融合后所能应用的意义.     

WiMAX技术发展及与现有网络的融合

通过WiMAX技术介绍、WiMAX产业发展,提出了WiMAX与现有网络的融合趋势,为WiMAX的规划和使用提出思路。WiMAX技术与现有网络的融合将改变现有的宽带接入通信方式,成为未来宽带接入的一种重要手段。     

WiMAX无线宽带接入技术及组网方案

介绍了无线宽带接入领域的热点WiMAX技术的相关标准和技术优势,结合目前相关设备的使用情况,提出了相应的组网方案,并结合实例,阐述了WiMAX系统网络规划的思路.     

WiMAX组网方案研究

本文研究了基于OFDM技术的WiMAX小区规划方案,给出了各种提高频谱效率的方案;然后对WiMAX与现网的融合进行了分析,给出了紧耦合和松耦合两种方法,并就基于IPv6的WiMAX核心网机制进行了阐述;最后对基站的无线互联方案进行了探讨.     

无线城域网（WMAN）下两种接入技术的分析比较

当前,WiMAX技术和McWiLL技术已经成为无线城域网下接入技术研究的热点。首先简要介绍了WiMAX技术和McWiLL技术的发展及现状,分别分析了两类接入技术的网络架构,重点研究了两种技术在组网方面的不同,提出了每类技术对应的组网方式,并最后分析了WiMAX技术和McWiLL技术与现有3G网络的融合组网方案以及两种WiMAX与WCDMA网络融合方案的优缺点。     

EPON和WiMAX融合架构下带宽分配和调度机制的研究

以太网无源光网络(EPON)和IEEE 802.16(WiMAX)的融合网络在固定移动混合接入网中被认为是很有前景的接入方式.文中提出了3种WiMAX无线网络与EPON网络系统融合架构,融合系统同时具有光网络的高带宽和无线网络的灵活性.为了在接入网中支持QoS,本文为融合结构提出了一种动态带宽分配算法(DBA)和调度机...     

WiMAX关键技术研究

随着社会的发展和市场的推动,有线宽带技术的已经得到了长足的发展,但是依赖于线缆的特性影响了其进一步的普及.在这种情况下,人们提出了WiMAX固定无线宽带接入技术,与有线宽带接入技术相比,WiMAX具有建设成本低、项目启动快、建设周期短、维护费用低等诸多优势.介绍、分析了WiMAX体系结构及其关键技术.     

Fixed Mobile Convergence Architectures for Broadband Access: Integration of EPON and WiMAX [Topics in Optical Communications]

EPON and WiMAX are two promising broadband access technologies for new-generation wired and wireless access. Their complementary features motivate interest in using EPON as a backhaul to connect multiple dispersed WiMAX base stations. In this article we propose four broadband access architectures to integrate EPON and WiMAX technologies. The integrated architectures can take advantage of the bandwidth benefit of fiber communications, and the mobile and non-line-of-sight features of wireless communications. Based on these integrated architectures, we elaborate on related control and operation issues to address the benefits gained by this integration. Integration of EPON and WiMAX enables fixed mobile convergence, and is expected to significantly reduce overall design and operational costs for new-generation broadband access networks.     

Evolution scenarios for optical telecommunication networks usingmultiwavelength transmission

The authors discuss how the transition in telecommunication networks taking place with increasing use of fiber in all segments of the networks, together with the increasing demand for broadband services, will lead to new network architectures. The customer access portion of these networks may have a large geographical range and high functionality, and may encompass switching functions. The increased use of optical routing based on wavelength multiplexing is likely to be employed in both the core and access portions of the new architectures. Among others, these developments will mean that fewer conventional crosspoint switches are required to support future broadband networks     

TD-SCDMA与WiMAX系统的QoS类别分析及映射研究

在介绍了TD-SCDMA与WiMAX系统的QoS体系的基础上,详细分析了两个系统的QoS要求及其业务类别,尤其是考虑了当TD-SCDMA蜂窝移动网络与WiMAX宽带无线网络进行融合时,两种不同的QoS业务类别的映射需求,并提出了一种映射方案。     

Optical services in future broadband networks

Optical transmission technology is progressing to the point where it can deliver data at rates that can strain conventional electronic broadband networks. We discuss how optical networks may play a role in relieving this strain. Different optical network architectures are discussed according to the services they provide, the technologies used to implement those services, and the geographical size of the network. We first discuss broadband network architectures and where optics might play a role in the protocol stack. We then discuss in detail the services optical networks can provide, the technologies used to implement those services, and some of the major technological limitations. Finally, we use this knowledge base to analyze the potential role of optics in WANs, MANs, and then local area networks (LANs)     

ATM signaling transport network architectures and analysis

As public carriers plan to offer new broadband services and consolidate different types of services into a single ATM network platform, the identification of an appropriate target broadband signaling transport network architecture is necessary to ensure smooth and cost-effective signaling network evolution. A number of suggestions have been made for possible broadband signaling transport architectures, ranging from the retention of signal transfer points (STPs) to the adoption of a fully distributed signaling transport architecture supporting the associated signaling mode only. The purpose of this article is to describe these architecture alternatives and discuss their qualitative and quantitative tradeoffs. The authors focus on public networks only     

Broadband high-density WDM transmission using superluminescent diodes

Fibre-loop architectures employing high-density WDM for passive routing have been demonstrated using both DFB-laser and LED transmitters. The latter approach is known as 'spectrum slicing'. The first demonstration of broadband spectrally sliced transmission is reported. superluminescent diodes were used to transmit 150 Mbit/s on each of 10 WDM channels, or 50 Mbit/s on each of 16 WDM channels.<>     

A taxonomy of broadband integrated switching architectures

A nomenclature describing a set of essential dimensions or characteristics germane to integrated broadband switching architectures is presented. Using this vocabulary, a classification of switching architectures is proposed. The classification is intended to afford the switch designer an ordered and reasoned approach to deciding among the numerous choices in the design of broadband switches     

Impact of emerging switching-transmission cost tradeoffs on futuretelecommunications network architectures

A study conducted to better understand the impact of declining transmission costs on the design of future fiber-based telecommunications network architectures is described. The study consists of quantifying the costs of switches, trunk and loop plant, building, and outside plant enclosures in order to determine the most economical number of switching nodes in the study areas based on the current equipment and land/building prices as well as the expected prices in the 1995 time frame. The results of this study show that the network architectures with fewer but larger switching nodes accompanied by back hauling of traffic via fiber optics and large multiplexers/concentrators offer significant savings potential in rural/suburban areas and low-to-moderate savings in urban areas as compared to architectures with many smaller switching nodes. In a broadband network environment, the results are shown to be valid for small penetrations of broadband services (less than 10%) and small broadband call bandwidths (equal to or less than 45 Mb/s)     

Digital storage of media-command and control protocol applied toATM

Digital storage media-command and control (DSM-CC) is a set of protocols for the delivery of integrated video-based multimedia services over networks, including delivery over residential broadband networks to homes. Open protocols in this area are essential for widespread deployment of interactive multimedia services to homes. After describing the basic reference model of DSM-CC and its concept of session and multiresource connection, this paper examines how DSM-CC can work over broadband ATM networks. A series of ATM network architectures is described along with the DSM-CC and Q.2931 message flows that together set up sessions and allocate connections between servers and clients. The characteristics of each ATM network architecture are briefly discussed