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作为全新的网络概念和技术,认知网络的设计、研发对于网络技术发展有着积极地作用。本文详细介绍认知网络的基本概念,进一步分析认知网络的系统目标和技术要求,阐述当前认知网络关键技术,旨在引导有关机构或相关人员对认知网络的设计与实现进行深入研讨,为进一步完善系统性能设计及向社会大众推广提供有价值的参考依据。 相似文献
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网络发展的一种新动向——认知网络 总被引:2,自引:0,他引:2
认知网络(Cognitive Network)是一种新近提出的网络概念和技术,对于网络的发展具有积极作用和重要意义。首先,文章介绍了认知网络的内涵、提出背景和技术要求。然后,说明了这种网络涉及的关键技术。并围绕一种三层实现框架探讨了认知网络的设计和实现问题。最后给出了结论并展望了今后的工作。 相似文献
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本文概要介绍了认知网络及实现认知能力的跨层设计。认知是未来网络设计需要考虑的重要方面,将大大提高网络设备的利用率和数据传送能力。如今无线传输所占比重已逐渐超过有线传输,成为应用最广泛的传输方式,而跨层设计就是一种非常适合无线环境下实现网络认知功能的设计模式。本文整合了跨层设计的几个不同概念和思想,并对不同的跨层设计进行了分类,最后总结了跨层设计的实施方案。 相似文献
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针对军事通信网络的网络抗毁重建、服务质量、异构性互连互通方面的需求分析,提出了构建军事认知通信网络。论述了军事认知通信网络的体系结构,包括网络组成、功能实体、工作流程和网络要素;比较分析了军事认知通信网络与目前网络的突出功能特点;描述了认知环境多域认知技术、认知智能决策和重配置等关键技术。 相似文献
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融合是未来网络发展的主旋律。利用因特网协议/多协议标记交换(IP/MPLS)技术建设多业务承载网络,可以为商业客户和企业客户提供有服务质量IQoS)保证的融合网络。通过融合的统一业务提供平台(包括业务执行环境和业务开发环境),利用同时访问和控制多个网络的能力,可以为多网用户提供跨网络的语音、视频、数据相结合的融合业务。网络融合和业务融合是长远的目标,需要在市场、技术、业务和成本分析的基础上综合考虑,以渐进的方式逐步实现。 相似文献
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《中兴通讯技术(英文版)》2007,(2):5-10
Convergence is the main trend for future network development. The multi-service bearer network,built upon the Internet Protocol/Multi-protocol Label Switching (IP/MPLS) technology,is a converged network with Quality of Service (QoS) guarantee for business and enterprise customers. The integrated and unified service provisioning platform (including both service execution and development enviroments) can provide integrated audio,video and data services over multiple access networks. However,achieving network convergence and service convergence are long-term goals,which can only be realized step by step after comprehensive consideration of many factors like market demands,technologies,services and costs. 相似文献
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网络智能化的基本原理是在现有固定电话网中引入用户数据库(DB)新网元,国内网络智能化主要采用TDM汇接局访问DB和端局完全访问DB方式,通过软交换实现将更有优势,而未来融合的网络将引入IMS架构. 相似文献
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More and more distinctive heterogeneous features are exhibited in wireless networks in multitude of networks, technologies, terminals, operation and management, and more. Effective convergence and cooperation of heterogeneous networks can be achieved through Mesh technology. The IP-based convergence integrates common features of heterogeneous networks, while the cooperation coordinates personalities of the networks. By using the convergence and cooperation, a standardized integration of separated and localized predominant capabilities and resources of heterogeneous networks can be fulfilled to enable the evolution into an ubiquitous and omnipotent intelligent network. 相似文献
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Sudhir Dixit 《Wireless Personal Communications》2006,38(1):55-65
As the convergence in digital industry takes shape, the digital networks, both wireline and wireless, are also converging to offer seamless services and enhanced experience to the user. With the arrival of the mobile Internet the mobility is also moving into new areas, e.g., imaging, games, video, multimedia, and across different types of networks. In this paper we explore why, what, and how of the network convergence, and identify how the industry viewpoints align and differ. We also identify the key barriers to achieving true network convergence. We then discuss the role of the Internet Protocol (IP) as the common thread that enables network convergence, and the key industry and standards initiatives to actually provide solutions and the equipment to implement a cost-efficient and high performance converged network.
Sudhir Dixit joined Nokia Research Center in 1996, where he is currently a Research Fellow and works on next generation wireless networks. From 1996 to 2003 he was a Senior Research Manager, focusing on IP/ATM, wireless, content networks, and optical networks. Prior to that he worked at NYNEX Science & Technology (now Verizon), GTE (now Verizon), Codex Motorola, Wang, Harris, and STL (now Nortel Europe Labs). He has published or presented over 150 papers, published three books, and holds 14 patents. He is on the Editorial Board of the IEEE Communications Magazine, Springer's Wireless Personal Communications Journal, and KIC's Journal of Communications and Networks. He received a B.E. degree from MANIT, Bhopal, India, an M.E. degree from BITS, Pilani, India, a Ph.D. degree from the University of Strathclyde, Glasgow, Scotland, and an M.B.A. degree from Florida Institute of Technology, Melbourne. He is a Fellow of IEE (UK) and IETE (India). He represents Nokia on the Steering Board of the Wireless World Research Forum, and is also Chair of the SIG on Self-Organization of Wireless World Systems. 相似文献
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基于IMS的网络融合技术 总被引:12,自引:0,他引:12
由于IP多媒体子系统(IMS)具有采用SIP协议进行呼叫控制、与接入无关和能够灵活提供多种业务的特点,ETSI和ITU-T已确定将其作为NGN的核心结构。在介绍IMS体系结构的基础上,分析了基于IMS实现固定和移动网络融合的可行性。并提出了融合网络的参考架构。 相似文献