共查询到20条相似文献,搜索用时 644 毫秒
1.
2.
基于集中式接入网架构的异构无线网络资源管理技术研究 总被引:2,自引:0,他引:2
未来无线通信网络将是一个多种无线接入方式共存的异构网络,如何实现异构网络在频谱、软硬件资源等方面的融合是一个亟需解决的问题.现有方案受限于不同网络独立部署的架构,无法真正实现异构网络资源的融合.针对该问题,提出了一种新型的基于集中式接入网架构的异构网络融合平台,可以在集中式资源池基础上进行异构网络间处理资源及无线资源的共享与统一管理.基于该平台,进一步阐述了异构网络资源管理的关键技术,包括基站资源虚拟化、处理资源按需分配、动态频谱共享、网络覆盖优化及性能分析验证方法等,为未来异构网络融合研究提供了一种可行的方案. 相似文献
3.
4.
可重配置的异构网络是无线领域研究的一个热点问题。通过有效的资源管理,重配置技术可以实现对异构环境的灵活适应和对异构无线资源的有效利用。作为一种适变能力很强的技术,重配置可以使异构无线系统从目前的隔离状态走向互通与协同,真正实现网络融合。本文描述了异构网络重配置技术的产生背景和基本概念,对重配置研究中的一系列资源管理关键技术,包括动态网络规划与管理、联合无线资源管理和先进频谱管理,进行了系统的总结。 相似文献
5.
6.
7.
本文介绍异构联合通信资源管理调度机,以解决现有新闻媒体中业务信息传输链路单一、网络资源利用率低、有价值稿件传输不及时、传输适应性差等问题。 相似文献
8.
9.
10.
战术异构网络互联端到端QoS研究 总被引:1,自引:0,他引:1
战术异构通信网络的融合,需要更完善的端到端服务质量(Quality of Service,QoS)体系。在研究和分析战术异构通信网特点后,分析总结出战术异构通信网络端到端QoS研究内容,并参考下一代网络QoS框架结构,提出了基于策略的QoS架构模型。最后阐述了所涉及的关键技术,用于解决在战术异构通信网中不同业务在跨网络传输时端到端QoS保证,合理利用无线网络资源,有效提高数据传输性能等问题。 相似文献
11.
认知无线网络是一种开放性的智能网络,通过网络环境的学习分析,对网络状态进行规划、决策和响应。认知无线网络使网络从静态工作模式发展到动态自适应工作模式,从单一封闭式网络发展到异构融合网络,是解决网络容量受限,实现频谱高效利用和异构网络融合的有效途径之一。认知无线网络的相关研究在国家973项目的支持和项目组各单位的共同努力下取得了长远发展,主要讨论认知无线网络架构的理论模型、实现功能以及部署实现,然后分析了支撑架构的关键技术研究,主要包括多域主动认知方法、自主资源决策管理、无线自主传输机制以及体系结构适变技术等。 相似文献
12.
Georgios Aristomenopoulos Timotheos Kastrinogiannis Zhaojun Li Symeon Papavassiliou 《Mobile Networks and Applications》2011,16(4):490-504
In this paper the problem of seamless mobility and proficient joint radio resource management over an all-IP internetworked
wireless heterogeneous environment is addressed. Nodes’ autonomicity is envisioned as the enabler to devise a Quality of Service
(QoS) aware architecture for supporting a variety of services, founded on a common utility based framework that provides enhanced
flexibility in reflecting different access networks’ type of resources and diverse QoS prerequisites, under a unified QoS-aware
resource allocation optimization problem. This allows a more in-depth intrinsic wireless network convergence, beyond All-IP,
driven by QoS-oriented resource management. This vision is demonstrated and instantiated for integrated WLAN and cellular
(both CDMA and OFDMA) networks, providing a viable path towards the evolution and realization of the future wireless networking
paradigm. Initial numerical results demonstrate the effectiveness of the proposed architecture and reveal the benefits of
such a service oriented paradigm against other existing access oriented autonomic designs. 相似文献
13.
近年来,随着移动互联网的蓬勃发展和智能终端的快速普及,对无缝网络覆盖和高速数据传输要求日趋增强,超密集异构蜂窝无线网络通过减小小区半径,增加低功率节点数量进行超密集组网,提高无线资源利用率和频谱效率,因而引起了国内外研究学者的广泛关注。然而,超密集异构蜂窝无线网络中愈发密集的网络部署也带来了各种严峻的问题,包括超密集异构蜂窝无线网络中的系统干扰问题、无线信息的安全传输问题、以及网络运营的能量供给问题等。为此,本文首先简单介绍了超密集异构蜂窝无线网络架构,接着从干扰管理、物理层安全和能量效率等方面,深入分析了超密集异构蜂窝无线网络中的关键技术和当前挑战,最后,进一步展望了超密集异构蜂窝无线网络的未来发展。 相似文献
14.
It is envisaged that next generation wireless networks (NGWN) will be heterogeneous, consisting of multiple radio access technologies (RATs) coexisting in the same geographical area. In these heterogeneous wireless networks, mobile terminals of different capabilities (heterogeneous terminals) will be used by subscribers to access network services. We investigate the effect of using heterogeneous mobile terminals (e.g. single-mode, dual-mode, triple-mode, etc.) on call blocking and call dropping probabilities in cooperative heterogeneous wireless networks. We develop analytical models for heterogeneous mobile terminals and joint radio resource management in heterogeneous wireless networks. Using a two-class three-RAT heterogeneous wireless network as an example, the effect of using heterogeneous terminals in the network is evaluated. Results show the overall call blocking/dropping probability experienced by subscribers in heterogeneous wireless networks depends on the capabilities of mobile terminals used by the subscribers. In the worst case scenario, when all subscribers use single-mode mobile terminals, each subscriber is confined to a single RAT and consequently, joint radio resource management in heterogeneous wireless network has no improvement on new call blocking and handoff call dropping probabilities. However, in the best case scenario, when all subscribers use three-mode terminals, new class-1 call blocking probability decreases from 0.37 (for 100% single-mode terminals) to 0.05, at the arrival rate of 6 calls per minute. New class-2 call blocking probability also decreases from 0.8 to 0.52. Similarly, handoff class-1 call dropping probability decreases from 0.14 to 0.003, and handoff class-2 call dropping probability decreases from 0.44 to 0.09. 相似文献
15.
16.
端到端重配置(E2R)技术起源于软件无线电(SDR)技术,利用SDR终端和基站等可重配置实体为基础定义网络架构,结合先进的资源管理机制和灵活的空中接口实现技术,实现了对异构环境的灵活适应和对异构无线资源的有效利用。E2R技术研究中有3个关键点,包括E2R的体系结构、E2R的资源管理和E2R的空中接口实现,已取得较大成果。E2R技术作为一种具有高适变能力的技术,是使异构无线系统从目前的隔离态走向互通与协同、实现网络融合的最具发展潜质的无线网络技术。目前,E2R的研究已成为未来无线通信网络领域的关键课题之一。 相似文献
17.
We present a novel end-to-end QoS architecture that enables seamless services over heterogeneous wireless access networks. We discuss the main architectural approaches and design issues of mobility-aware QoS signaling in IP networks. Then we introduce a QoS signaling architecture that integrates resource management with mobility management. It is based on a domain resource manager concept and nicely supports various handover types in an integrated approach. In particular, we support anticipated handover with pre-reservation of resources over the old network before the mobile node is attached to the new access point. 相似文献
18.
19.
Li Jun 《中兴通讯技术(英文版)》2008,(3):50-53
The convergence of heterogeneous wireless networks is an inevitable trend in broadband wireless communications development. In heterogeneous networks convergence environment, each wireless network can provide ubiquitous, best Quality of Service (QoS) services. The challenge lies in the design of the management system and access selection architecture for heterogeneous multi-mode terminals. A type of management architecture for heterogeneous multi-mode terminal via effective interaction with all protocol layers is adaptable for multi-access standards and technical requirements to achieve seamless access and mobility for multi-mode heterogeneous terminals. As the core subject for research, access selection functional architecture mainly consists of three modules, namely access adaptation, mobility management, and user preference. 相似文献
20.
研究了无线网络中的资源管理问题,介绍了传统的无线资源管理及其关键技术。重点介绍了适合下一代无线网络要求的联合无线资源管理的特点及其分类,它对于实现真正的高速无线多媒体业务具有重要的意义。 相似文献