【摘要】 认知无线电已经成为当前无线通信与移动计算领域的研究热点,其基础则是频谱资源的动态、高效的管理,其核心是无线频谱资源的共享。提出了一种认知无线电的自主适变跨层设计和网络协作方案,并在蜂窝系统、城域网系统和短距离系统上构建了系统的仿真和验证系统。该系统通过主动式网络协作,结合开放系统互连协议栈的频谱管理,使得业务/控制/认知平面上的认知无线电具有自主选择异构网络和智能适配网络变化的能力。更多还原

【Abstract】 Cognitive(CR)is a revolution in radio technology and is viewed as an enabling technology for dynamic spectrum access.To select an ideal network operating state for tunable parameters and network performance objectives,this paper addresses a novel resource management method.It is very suitable for efficient wireless services in multi-layer service environment.By using proactive spectrum etiquette protocol in adaptive network environment,a mechanism of cross-layer management and network coordination is derived.The simulation platform is identified for selecting a number of potential configurations to achieve high bit-rate and end-to-end QoS guarantees.更多还原