CAJ | 학술논문

针对认知无线电网络提出了一种基于中间件的分布式动态QoS保证机制DQAM,当网络对应用承诺的QoS保证发生变化,或者应用对网络的QoS要求发生变化时,通过网络和应用之间的反馈和协商,在分析当前网络状态和应用需求的基础上,根据特定的策略对网络和应用进行动态干预,在保证一定QoS的前提下,使应用最大程度的适应网络,网络最大限度的支持应用,以提高认知无线电网络对应用的支持能力和应用对网络的适应能力.对DQAM的原理、系统组成以及运行方式等,进行了讨论;从体系结构、工作过程、信息收集与策略生成和节点(任务)重构等4个方面,给出了DQAM的基本框架,并通过一个典型场景就DQAM的应用问题进行了探讨.
침대인지무선전망락제출료일충기우중간건적분포식동태QoS보증궤제DQAM,당망락대응용승낙적QoS보증발생변화,혹자응용대망락적QoS요구발생변화시,통과망락화응용지간적반궤화협상,재분석당전망락상태화응용수구적기출상,근거특정적책략대망락화응용진행동태간예,재보증일정QoS적전제하,사응용최대정도적괄응망락,망락최대한도적지지응용,이제고인지무선전망락대응용적지지능력화응용대망락적괄응능력.대DQAM적원리、계통조성이급운행방식등,진행료토론;종체계결구、공작과정、신식수집여책략생성화절점(임무)중구등4개방면,급출료DQAM적기본광가,병통과일개전형장경취DQAM적응용문제진행료탐토.
This paper proposes a middleware based distributed dynamic QoS assurance mechanism for Cognitive Radio Networks (CRN),named DQAM.When the network QoS assurance to applications or/and the applications QoS demand to network is / are changed,DQAM regulates the network and applications under certain strategies dynamically,based on the analysis of current network state and application demand through a feedback and negotiation mechanism between network and applications.DQAM can make applications adapt network and network support applications furthest,and improves the support ability of CRN to applications and adaptability of applications to CRN.This paper discusses the theory,the system composition and the operation method of DQAM,and puts forward the essential framework of DQAM from four aspects:System architecture,working process,information acquisition/strategies generation,and node (task) refactoring.At the end of the paper,the application problem of DQAM is discussed with a typical scenario.