基于中继卫星SMA的用户网络接入技术

摘要

To meet accessing demand on tracking and data relay satellite of different type of user terminal and a large number of users,the paper designs a layered network management architecture and a MC-MF-TDMA resource distribution technology combining dynamic and static distribution. With the layered network management architecture,the low level sub-network users accesses to SMA in Ad-hoc approach to enhance the expandability of the network and alleviate the excessive consump-tions of SMA resources by multiple users;by using MC-MF-TDMA resource distribution technology combining dynamic and static distribution,the paper realizes the extension of slot time and enhances the flexibility of data rate.OPNET simulation shows,the network architecture and resource distribu-tion strategy is reasonable and practicable,able to provide technical support for tracking and data relay satellite in realizing online management of various territorial,marine,space and aerial users.%针对中继卫星各类型及大量用户的接入需求，设计了网络分级管理架构和动态/静态相结合的多码-多频-时分多址(MC-MF-TDMA)资源分配技术。利用网络分级管理架构，低层子网用户以自组织的方式通过高层骨干节点转接入S频段多址系统(SMA)波束，以增强网络的扩展能力，缓解多用户对 SMA资源的过度消耗；利用动态/静态相结合的 MC-MF-TDMA 资源分配技术，延长时隙长度，提高用户数据速率的灵活性。OPNET仿真表明，网络结构和资源分配策略合理可行，可为中继卫星实现对陆、海、空、天各类用户在线管理提供技术支持。