面向空天地一体化的空时多址接入协议  

STDMA Protocol for High Dynamic Space-air-ground Integrated Network

作　　者：李光明[1] 孙晓磊[1] 谢杰荣 LI Guangming;SUN Xiaolei;XIE Jierong(Navy Submarine Academy,Qingdao Shandong 266199,China)

机构地区：[1]海军潜艇学院,山东青岛266199

出　　处：《通信技术》2021年第9期2145-2149,共5页Communications Technology

摘　　要：空天地一体化网络由天基网、空基网和地基网组成,网络节点之间的互联互通对于增强网络功能、提升生存能力等具有重要意义。其中,高空网络具有灵活可靠的快速接入能力,但由于网络动态多变、接入节点繁多复杂,使得高空组网内无线信道资源有限,给空中组网带来了更多的挑战。针对上述问题,在节点高速移动,定向天线等条件下,设计改进了空时多址接入(SpaceTime-Division Multiple Access,STDMA)时隙调度算法,研究了时隙冲突避免机制。仿真实验表明该方法可以减少网络空域干扰,提高链路可靠性。The air-space-ground integrated network is composed of a space-based network,a spacebased network,and a ground-based network.The interconnection and intercommunication between network nodes is of great significance for enhancing network functions and improving survivability.Among them,the high-altitude network has flexible and reliable fast access capabilities,but due to the dynamic change of the network and the numerous and complex access nodes,the wireless channel resources in the highaltitude networking are limited,which brings more challenges to the aerial networking.In response to above problems,under the conditions of high-speed movement of nodes and directional antennas,an improved STDMA(Space-Time-Division Multiple Access)time slot scheduling algorithm is designed and the time slot conflict avoidance mechanism is studied.Simulation experiments indicate that the method in this paper can reduce network airspace interference and improve link reliability.

关 键 词：空天地一体化 自组织网络 多址接入协议 时隙冲突避免 

分 类 号：TN929.5[电子电信—通信与信息系统]