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本文在介绍WiMAX空中接口QoS技术和其在网络中QoS控制模型的基础上,重点讨论集基于流计费和QoS管理为一体的WiMAX网络PCC架构,并给出了漫游情形下的一种PCC信令流程。摘要 相似文献
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本文分析了WiMAX网络的体系结构,介绍了WiMAX网络的参考模型,最后对WiMAX网络的主要功能进行了描述。 相似文献
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文章指出了WiMAX接入IMS的必要性,分析了WiMAX接入IMS的几种网络架构,并重点分析了相关核心技术。 相似文献
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RRM相关功能是LTE的E—UTRAN系统中的一个重要组成部分。通过逐个分析LTE的E~UTRAN系统中的RRM功能,给出了LTE系统中RRM的一种较优的实现架构,对于蜂窝移动通信系统RRM功能的架构设计、实现具有很好的指导意义。 相似文献
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WIRELESS BROADBAND ACCESS: WIMAX AND BEYOND - A Secure and Service-Oriented Network Control Framework for WiMAX Networks 总被引:2,自引:0,他引:2
Kejie Lu Yi Qian Hsiao-Hwa Chen 《Communications Magazine, IEEE》2007,45(5):124-130
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 相似文献
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Amir Esmailpour 《International Journal of Wireless Information Networks》2016,23(2):151-161
As we move towards the next generation networks, one of the fundamental issues to consider is the integration of wireless technologies. Integrated networks will have impressive capabilities as well as cumbersome challenges in areas such as Radio Resource Management (RRM), Quality of Service (QoS), Security, Mobility, and Power Management. In this paper, we tackle one of the challenges facing researchers and developers in this area. The main objective of this research was to build an integrated WiFi–WiMAX network in a test-bed environment, and to investigate the effects of integration on the QoS performance. This study is based on practical deployment and measurements in a laboratory environment. We successfully implemented an integrated system and experimented with various QoS scenarios. A set of RRM schemes were defined for the integrated networks and actual results collected from network analyzer showed that the QoS requirements were met throughout the WiFi–WiMAX networks. 相似文献
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重点介绍WiMAX技术,包括WiMAX的网络结构、频谱规划、应用模式和组网方案,分析WiMAX在中国实施所面临的3种挑战,这就是频谱资源、政府部门的监管、市场及运营定位存在的风险. 相似文献
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文中提出了几种安全的面向服务的Wimax的网络控制架构。为了设计这样的架构,笔者侧重考虑通信安全和满足Wimax潜在的业务需求这两个方面因素。提出的构架里包含两个基本元素:有服务意识,统一的路由配置。另外研究了Wimax建设的关键性技术。通过理论研究,可以为建立更安全更实际可靠的Wimax网络提供一些实际可行的指导意见。 相似文献
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为了给移动用户提供最好的无所不在的无线宽带接入,不同无线网的融合是当前通信领域的热点研究。而切换管理又是解决无线网无缝融合的最具挑战性的问题。文中讨论了IEEE 802.11WLAN与IEEE 802.16e移动WiMAX网的融合与切换管理。描述其结构和应用场景,介绍了IEEE802.21,它为介质独立的异类网切换提供了一个信令框架,提出了如何使用IEEE802.21解决WLAN与移动WiMAX网之间的切换,并给出了详细的切换过程。说明了使用IEEE 802.21解决WLAN与移动WiMAX网之间的切换是可行有效的。 相似文献
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WiMAX的发展受到了通信行业的广泛关注,了解和认识WiMAX技术对有线电视网络的增值运营会有所启发,详细介绍了WiMAX技术,包括实现频率、网络结构、技术特点以及同其他技术的比较,并进一步论述在广电行业的应用。 相似文献
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分析了WiMAX的QoS策略和基于IMS的TD-SCDMA系统QoS机制,给出了二者详细的QoS业务类型和要求,提出了在下一代网络IMS框架下采用VoIP技术的TD—SCDMA和WiMAX网络融合架构,并给出QoS融合时不同QoS业务类型的映射方案. 相似文献