WiMAX端到端接入策略研究

作为现有网络及未来3G网络的有益补充,WiMAX在远距离传输、高速宽带接入及多媒体通信等方面具有非常突出的优势。WiMAX端到端网络的最终目标是确保业务质量并将其安全地发布到终端用户,文中紧紧围绕WiMAX发展前沿的热点问题,根据未来的发展趋势,主要分析了几种WiMAX终端设备能力以及可能的端到端接入情况,并对这些端到端组网方案进行了研究。     

华为端到端融合WiMAX/LTE方案集中亮相北美论坛

电信解决方案供货商华为宣布,由华为主办的2011年全球WiMAX/LTE发展论坛成功落幕。本次论坛对WiMAX网络营运与发展以及TD-LTE未来演进等焦点问题,业界进行了集中的研讨。华为认为融合是LTETDD/FDD产业链的趋势。基于此判断,华为发布了一系列旨在促进产业链融合的端到端、平台化的商用解决方案与产品,     

为WiMAX构建端到端的网络架构

分析了WiMAX技术的市场驱动力和影响其成功部署的关键因素，随后介绍了一个基于WiMAX接入技术的端到端网络架构，包括回程、汇聚、接入控制及核心网络，并对该网络架构的特点和优势进行了分析。     

华为WiMAX端到端解决方案引领移动宽带时代

华为端到端移动WiMAX解决方案在ITU世界电信展（ITUTELECOMWORID2006）上一经亮相就赢得众多关注。华为向参会观众全面展示了端到端移动WiMAX解决方案包括系列化基站、接入服务网关、多样化终端，统一的网管系统等，并演示了各种丰富的移动宽带业务。     

华为发布业界首个WiMAX／TD—LTE商用解决方案

华为日前宣布推出业内首个可商用的WiMAX／LTE TDD Single RAN解决方案。该端到端解决方案使运营商能够从WiMAx无缝迁移到LTE TDD网络。     

诺基亚西门子通信亮相2008年WiMAX全球峰会

近日,在阿姆斯特丹召开的2008年WiMAX全球峰会上,诺基亚西门子通信展示了其基于可充分扩展、端到端解决方案的WiMAX服务体验。此次演示重点介绍通信服务提供商如何快速实现自己的覆盖范围和容量目标．创建无缝的个性化最终用户体验。     

新品发布

多模无线基站,WiMAX移动视频监控终端,WiMAX 16e RRU,端到端40G解决方案,高性能VNA,多重测试解决方案     

端到端网络承载性能质量测评势在必行

首先阐述了基于端到端的承载网络性能测评的重要性和紧迫性。接着介绍了端到QoS测评的新方法．然后着重说明了端到端QoS测评新方法可解决运营质量管理中存在的诸方面问题．最后展望了网络质量管理的未来。     

WiMAX系统架构以及无线资源管理机制

研究了基于IEEE 802.16标准的WiMAX系统架构,给出了端到端的网络参考模型,并就当前WiMAX网络标准现状进行了介绍,特别是详细阐述了WiMAX系统的无线资源管理机制的体系结构,对其中的关键算法进行了详细研究.     

中兴WiMAX及IMS端到端系统完成GMI2008测试

中兴通讯近日宣布GMI2008“全球多业务互通”测试活动取得圆满成功。中兴通讯的WiMAX＋IMS端到端系统、IPTV以及TD—SCDMA等设备和解决方案顺利完成了既定场景的测试。     

WiMAX技术及应用

介绍了WiMAX协议的历史及优势，描述了其物理层和MAC层，把它与3G，Wi-Fi及MBWA进行了比较，阐述了WiMAX和Wi—Fi及MBWA的一种组网模式，叙述了WiMAX在未来无线宽带网络中的定位及在手机电视中的应用。     

一种多出口的WiMAX Mesh回程网络资源调度算法

由于WiMAX Mesh网络可以有效保证网络的QoS,因此有可能将其应用于电信级的回程网络.本文分析了WiMAX Mesh网络的调度机制和单出口 WiMAX Mesh网络存在的问题,提出了一种多出口WiMAX Mesh网络组网方案,在该方案的基础上提出了全局最优的调度算法,并给出了把该算法应用到实际WiMAX Mesh网络中的详细步骤.本文对具有20个和50个SS节点的Mesh网络进行了仿真,对算法的性能和效果进行了验证.仿真结果表明,本算法可以把调度效率提高53%～70%.     

WiMAX networks: from access to service platform

Recently, WiMAX has been proposed as an attractive wireless communication technology for providing broadband access for metropolitan areas. Despite its salient features from the technical perspective, the success of the WiMAX network depends on its capability of providing cost-effective solutions for a variety of existing and potential services. To address this issue, we advocate the design of a new network layer that can support multihop communications efficiently in WiMAX networks and that can fully exploit the features of the WiMAX standards. In particular, we first identify services that are important for broadband wireless network providers and investigate the requirements for different services. We then discuss now to design WiMAX networks by considering issues of efficiency, security, and reliability. The key observation is that WiMAX can be properly complemented by advanced connection management and network coding techniques.     

WiMAX-EVDO interworking using mobile IP - [WiMAX update]

WiMAX, a fourth-generation wireless-access technology, has made significant progress both in the standard forums and with wireless network carriers. To ensure service continuity to a legacy end user, it is important for a WiMAX mobile device to interwork with existing thirdgeneration access networks before it is uniquely and ubiquitously deployed. This article addresses this issue and shows how interworking can be achieved with EVDO wireless-access technology, using mobile IP in a dual mode terminal. We present a network architecture solution and detailed call flows.     

WiMAX标准最新进展

概述了WiMAX的发展现状.从固定无线接入空中接口、移动无线接入空中接口以及管理平面相关的标准等方面介绍了IEEE 802.16标准的最新进展情况.进一步阐明了WiMAX的工作重点,包括认证规范与网络规范.     

WiMAX技术及对TD-SCDMA的影响

本文就WiMAX技术的发展和技术特点进行了简单的介绍,并对WiMAX技术和其他三种3G标准的技术进行了比较,最后分析了WiMAX成为3G标准对TD的影响。     

Applying Analytical Hierarchy Process to a WiMAX Performance Evaluation Model

Evaluating performance of individual features of WiMAX technology is a topic of widespread discussion. Currently, there is no quantitative way of measuring WiMAX technology so that wireless operators can meet their design objectives. This paper outlines a set of design criteria for WiMAX and provides a decision-making aid that ranks the importance of criteria using Analytic Hierarchy Process (AHP). This ranking should sufficiently reflect market expectations of the relative importance of various design criteria. A model integrating AHP priorities with enhanced Data Envelopment Analysis (DEA) is the basis for formulating a technological value in simple,comparable format. A case study is provided to show how this technological value is used to evaluate a three year network deployment plan. In the future, this model could be extended to WiMAX equipment suppliers for the purpose of validating performance targets of individual criteria, and enhancing supplier roadmaps for future network development.     

Optimization of association procedure in WiMAX networks with relay stations

When a MS enters to the WiMAX network, a network entry procedure has to be performed. The aim of procedure is twofold. Firstly, several connections between the MS and BS are created, i.e. basic, primary and secondary management connections to control data transmissions. Secondly, the MS is admitted into the network. According to the IEEE 802.16 standard, a MS always tries to associate to BS with the highest received signal quality. This method is suitable as long as the MS is directly connected to the network via BS. However by introducing relay stations to the WiMAX architecture, the MS entry procedure needs to be modified. Mainly, the point of attachment influences the network performance. This paper proposes an optimized association procedure which takes into account the use of relays stations in the network. The obtained results show improvement of system performance.     

WIRELESS BROADBAND ACCESS: WIMAX AND BEYOND - A Secure and Service-Oriented Network Control Framework for WiMAX Networks

WiMAX, worldwide interoperability for microwave access, is an emerging wireless communication system that can provide broadband access with large-scale coverage. As a cost-effective solution, multihop communication is becoming more and more important to WiMAX systems. To successfully deploy multihop WiMAX networks, security is one of the major challenges that must be addressed. Another crucial issue is how to support different services and applications in WiMAX networks. Since WiMAX is a relatively new standard, very little work has been presented in the literature. In this article we propose a secure and service-oriented network control framework for WiMAX networks. In the design of this framework we consider both the security requirements of the communications and the requirements of potential WiMAX applications that have not been fully addressed previously in the network layer design. The proposed framework consists of two basic components: a service-aware control framework and a unified routing scheme. Besides the design of the framework, we further study a number of key enabling technologies that are important to a practical WiMAX network. Our study can provide a guideline for the design of a more secure and practical WiMAX network