无线异构网络协同工作技术研究
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摘要
随着无线通信技术的不断发展,针对覆盖范围、用户数量、业务类型及服务质量(QoS)的不同要求,目前已研究开发出包括各种蜂窝通信网、无线局域网(WLAN)、无线个域网(WPAN)和卫星通信网络在内的多种无线通信网络。而且更多新的无线网络还在不断涌现。从目前的发展来看,这些网络中没有任何一个网络具有取代所有其他网络,完全满足未来所有用户和各种业务类型对于未来无线通信高QoS、低使用价格在全球范围内无缝接入服务要求,成为统一同构网络的能力。因此人们普遍认为:未来无线网将是由多种技术、多种网络、多种业务相互融合所形成的集合体。这种在网络拓扑结构、底层物理技术、网络协议、网络提供业务、以及网络控制管理方式等方面的异构化倾向给未来无线网络带来了诸多挑战和理论、技术研究问题。尤其是作为通信系统的本质特征—追求信息的有效传递要求这些网络必须能够协同工作这一基本要求,又为上述问题提出了更强的约束条件。
基于对未来无线网络异构与协同工作两方面发展的预测,提出以无线异构网络协同工作作为本文的研究课题,结合实际项目背景对无线异构网络的结构模式、跨层设计、路由算法以及无线资源管理等问题进行分析研究,主要工作包括:
1)从低轨道(Low Earth Orbit-LEO)卫星通信系统业务模型入手,根据对LEO卫星通信系统中终端通信话务量区域、时间相关集中分布,类似毛刺的脉冲形状业务量变化规律对整个LEO卫星通信系统的性能指标造成一定影响问题的分析,提出一种基于LEO卫星通信网络提供对卫星终端以Ad hoc方式异构组网支持的终端双模组网模型(LEO-Ad hoc dual mode networking model-LADMNM)。在该模型框架下,提出一种基于地理位置信息的Ad hoc组网路由查找算法(Geographic Location Based Route-GLBR)。理论分析和仿真实验表明:该组网模型和路由算法可有效削减LEO卫星通信系统热点小区内的业务流量尖峰,在相同点波束信道数下达到同时降低呼叫阻塞率与提高信道有效利用率的目的。
2)从对无线传感网信息场分布分析结果与工程实用化需求出发,提出与一般研究文献关于无线传感网由大量同构、微小、资源受限、随机分布在兴趣区域的网络节点构成的网络配置模型不同的一种异构配置模型(WSNHEDPM-Wireless Sensor Network Hetergeneous DePloyment Model),对该异构配置模型的配置成本、功耗和生存时间进行了理论和实验分析。分析和仿真实验结果表明这种异构配置方案是对于无线传感网更为普遍应用环境的更为合理、实用的网络配置方案。
3)对未来无线网络中多网并存下的无线资源管理与效用(Utility)最大化方法进行研究。提出一种LEO卫星通信系统中针对异构业务的灵活带宽预留机制(Flexible Bandwidth Reservation Scheme-FBRS)。根据未来无线网络中各参与方效益组成及其对于系统长期收入影响的分析,提出一个基于网络效用的资源管理算法(UORRMA-Utility Oriented Radio Resource Management Algorithms)。该算法由系统定价策略、业务呼叫接入控制策略( CAC-Call Access Control )和无线资源分配( Radio Resource Allocation-RRA)策略组成。理论分析和仿真实验表明,该策略可在多种业务与多网络并存的异构环境下达到系统和用户效用最优的结果。
本项目的研究受到了武器装备预研基金项目(51421010805JW05)和江西省2006科技攻关项目:《远程节能控制的蓝牙V2.0智能网关》的资助。
With the development of wireless communication technology, oriented from the various requirements from the networks’coverage, the scale of the customers’commodity and the Quality of service (QoS), various wireless networks -such as the different kind of cellular networks, Wireless Local Area Network (WLAN), Wireless Personal Area Network (WPAN) and satellite communication networks are developed and applied. And more novel and different wireless networks are emerging. Perceive from the current state of wireless network, not any one of the aforementioned networks has the capability that it could satisfy the requirements from all users to all kind of services with high QoS, low prices with seamless access in global area. So it is commonly agreed that the future wireless network will be an integration of all kinds of wireless network with different technologies and different service. The heterogeneous developing trend in all aspects of the network topology, the bottom physics layer technology, the network protocols architecture, the service provision, and the strategies of network control and management put forward challenges and theoretical and technological problems for further research. And the appeal to all these networks should interconnected corporately made the problem stringent.
Based on the perception to the trend of heterogeneity and cooperation for the future wireless network, the cooperation of the wireless heterogeneous network is taken as the research area of this dissertation. The main works include:
1) Start from the analysis to the traffic model of the Low Earth Orbit(LEO) satellite systems, aim to the problem that the traffic burst in some time duration and in some“hot spot”area may affect the performance of LEO system, a new LEO-Ad hoc dual-mode networking model(LEO-Ad hoc dual-mode networking model- LADMNM)is proposed. Under the model, a novel geographic location based route (GLBR) algorithm for Ad Hoc networking is proposed. Theoretical analysis and simulation results have shown that the networking model and the route algorithm have distributed the traffic burst peak in the cell and have decreased the realistic call blocking probability and increased the valid channel utility rate of the system.
2) Oriented from the analysis to the sense information distribution and practical engineering requirements to the wireless sensor network, a different Wireless Sensor Network Heterogeneous DePloyment Model (WSNHEDPM) is proposed, which is differ from the normal homogeneous deployment plan with huge quantitative trivial, resource-limited, random distributed in interesting area. The theoretical and experimental analysis is made to compare the both deployment plan in the parameters of the deployment cost, the power consumed and the survival time. The analytical and simulation results show that the heterogeneous deployment is more generic and more reasonable for the wireless sensor network to face the universal application area.
3) Research work has been done on the Radio Resources Management and the utility optimization of the wireless heterogeneous network. A new Flexible Bandwidth Reservation Scheme (FBRS) for handover management and call admission control to the heterogeneous services in Low Earth Orbit (LEO) satellite systems is proposed. According to the analysis into the utility of all participants in future wireless networks and the analysis of the influence of the utility of all participants to the long-tern revenue of the service-provider, an Utility Oriented Radio Resource Management Algorithms (UORRMA) is proposed. The algorithms is composed of the pricing strategy, the call access control (CAC) strategy and the radio resource allocation (RRA) strategy and make decision based on the long-term utility of both the network and the customer to achieve an optimize equilibrium for the utility of the service-provider and the customer of the network.
The dissertation is supported by the Armament Research Foundation 51421010805JW05 and the Jiangxi Science and Technology Project“the intellectual remote Bluetooth2.0 controller for energy saving”.
基于对未来无线网络异构与协同工作两方面发展的预测,提出以无线异构网络协同工作作为本文的研究课题,结合实际项目背景对无线异构网络的结构模式、跨层设计、路由算法以及无线资源管理等问题进行分析研究,主要工作包括:
1)从低轨道(Low Earth Orbit-LEO)卫星通信系统业务模型入手,根据对LEO卫星通信系统中终端通信话务量区域、时间相关集中分布,类似毛刺的脉冲形状业务量变化规律对整个LEO卫星通信系统的性能指标造成一定影响问题的分析,提出一种基于LEO卫星通信网络提供对卫星终端以Ad hoc方式异构组网支持的终端双模组网模型(LEO-Ad hoc dual mode networking model-LADMNM)。在该模型框架下,提出一种基于地理位置信息的Ad hoc组网路由查找算法(Geographic Location Based Route-GLBR)。理论分析和仿真实验表明:该组网模型和路由算法可有效削减LEO卫星通信系统热点小区内的业务流量尖峰,在相同点波束信道数下达到同时降低呼叫阻塞率与提高信道有效利用率的目的。
2)从对无线传感网信息场分布分析结果与工程实用化需求出发,提出与一般研究文献关于无线传感网由大量同构、微小、资源受限、随机分布在兴趣区域的网络节点构成的网络配置模型不同的一种异构配置模型(WSNHEDPM-Wireless Sensor Network Hetergeneous DePloyment Model),对该异构配置模型的配置成本、功耗和生存时间进行了理论和实验分析。分析和仿真实验结果表明这种异构配置方案是对于无线传感网更为普遍应用环境的更为合理、实用的网络配置方案。
3)对未来无线网络中多网并存下的无线资源管理与效用(Utility)最大化方法进行研究。提出一种LEO卫星通信系统中针对异构业务的灵活带宽预留机制(Flexible Bandwidth Reservation Scheme-FBRS)。根据未来无线网络中各参与方效益组成及其对于系统长期收入影响的分析,提出一个基于网络效用的资源管理算法(UORRMA-Utility Oriented Radio Resource Management Algorithms)。该算法由系统定价策略、业务呼叫接入控制策略( CAC-Call Access Control )和无线资源分配( Radio Resource Allocation-RRA)策略组成。理论分析和仿真实验表明,该策略可在多种业务与多网络并存的异构环境下达到系统和用户效用最优的结果。
本项目的研究受到了武器装备预研基金项目(51421010805JW05)和江西省2006科技攻关项目:《远程节能控制的蓝牙V2.0智能网关》的资助。
With the development of wireless communication technology, oriented from the various requirements from the networks’coverage, the scale of the customers’commodity and the Quality of service (QoS), various wireless networks -such as the different kind of cellular networks, Wireless Local Area Network (WLAN), Wireless Personal Area Network (WPAN) and satellite communication networks are developed and applied. And more novel and different wireless networks are emerging. Perceive from the current state of wireless network, not any one of the aforementioned networks has the capability that it could satisfy the requirements from all users to all kind of services with high QoS, low prices with seamless access in global area. So it is commonly agreed that the future wireless network will be an integration of all kinds of wireless network with different technologies and different service. The heterogeneous developing trend in all aspects of the network topology, the bottom physics layer technology, the network protocols architecture, the service provision, and the strategies of network control and management put forward challenges and theoretical and technological problems for further research. And the appeal to all these networks should interconnected corporately made the problem stringent.
Based on the perception to the trend of heterogeneity and cooperation for the future wireless network, the cooperation of the wireless heterogeneous network is taken as the research area of this dissertation. The main works include:
1) Start from the analysis to the traffic model of the Low Earth Orbit(LEO) satellite systems, aim to the problem that the traffic burst in some time duration and in some“hot spot”area may affect the performance of LEO system, a new LEO-Ad hoc dual-mode networking model(LEO-Ad hoc dual-mode networking model- LADMNM)is proposed. Under the model, a novel geographic location based route (GLBR) algorithm for Ad Hoc networking is proposed. Theoretical analysis and simulation results have shown that the networking model and the route algorithm have distributed the traffic burst peak in the cell and have decreased the realistic call blocking probability and increased the valid channel utility rate of the system.
2) Oriented from the analysis to the sense information distribution and practical engineering requirements to the wireless sensor network, a different Wireless Sensor Network Heterogeneous DePloyment Model (WSNHEDPM) is proposed, which is differ from the normal homogeneous deployment plan with huge quantitative trivial, resource-limited, random distributed in interesting area. The theoretical and experimental analysis is made to compare the both deployment plan in the parameters of the deployment cost, the power consumed and the survival time. The analytical and simulation results show that the heterogeneous deployment is more generic and more reasonable for the wireless sensor network to face the universal application area.
3) Research work has been done on the Radio Resources Management and the utility optimization of the wireless heterogeneous network. A new Flexible Bandwidth Reservation Scheme (FBRS) for handover management and call admission control to the heterogeneous services in Low Earth Orbit (LEO) satellite systems is proposed. According to the analysis into the utility of all participants in future wireless networks and the analysis of the influence of the utility of all participants to the long-tern revenue of the service-provider, an Utility Oriented Radio Resource Management Algorithms (UORRMA) is proposed. The algorithms is composed of the pricing strategy, the call access control (CAC) strategy and the radio resource allocation (RRA) strategy and make decision based on the long-term utility of both the network and the customer to achieve an optimize equilibrium for the utility of the service-provider and the customer of the network.
The dissertation is supported by the Armament Research Foundation 51421010805JW05 and the Jiangxi Science and Technology Project“the intellectual remote Bluetooth2.0 controller for energy saving”.
引文
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