基于人工免疫的星座卫星通信系统资源调配算法

Algorithm of Resource Allocation in Constellation Satellite Communication System Based on Artificial Immune

资源调配是星座卫星通信系统应用管理技术中亟待研究的关键技术之一。文中首先分析了星座卫星通信系统中触发资源调配的主要因素;然后,从通信任务效能系数和通信系统满足度两个重要指标出发,分别提出了通用的面向卫星资源和面向通信任务的资源调配数学模型;通过数学模型对星座卫星资源调配的扩展性、灵活性等特点进行了分析,运用免疫系统的自适应、自学习、自组织等特性,提出了一种具有模糊处理时间的免疫调配算法。仿真实验和理论分析表明,算法解决了其他调配算法空间、时间复杂度高和收敛速度慢等问题,提高了局部搜索解空间的效率。

Resource Allocation is one of the key techniques in constellation satellite communication system.First,the main factors triggering allocating of resource are discussed.Second,two general mathematic models,satellite resource based and task based resource allocation,are presented from the view of the efficiency coefficient of the communication task and the degree of satisfaction in the communication system.Inspired by the self-adaptive,self-learning and self-organization in immune system,an immune allocating algorithm with fuzzy disposal time is presented based on the mathematic models analysis of the characteristic of expansibility and agility about resource allocation in constellation satellite communication system.Experiment results and theoretic analysis show that the algorithm solves the problems of high complexity in space and time as well as the slow constringency existing in other allocating algorithms and improves the efficiency about the local searching result space.