DVB-RCS的终端同步流程分析-《计算机技术与发展》

文章信息/Info

Author(s):: ZHANG Song-lin; LIU Rong; WANG Hong-jie; CAI Zhi-wei; [1]PLA University of Science and Technology[2]Institute of China Electronic System Engineering

摘要:: 随着用户业务需求的不断增加,卫星通信和地面网络一样,正向宽带化和交互式的方向发展。DVB-RCS作为一种宽带卫星接入技术,采用DVB广播和多频时分多址（MF-TDMA）多点回传的工作方式,中心站和远端的终端站以非对称的前向和回传链路速率实现双向通信。为了更加深入理解DVB—RCS的同步过程,在对DVB-RCS系统简单介绍的基础上,描述了终端通信的整个流程。分别对入网注册中终端的初始同步过程,以及入网的步骤进行介绍,分析了由粗同步到达精细同步的过程,最后介绍了通信过程中的同步维持以及对通信结束的处理

Abstract:: With the increasing demand for user services,broadband and interactive applications is the direction of the development of satellite communications and the terrestrial networks.As one access technique of broadband satellite,the DVB-RCS uses DVB broadcast and MF-TDMA,where the central station and remote terminals takes an asymmetric forward and return rate to realize two-way communication link.For more in-depth understanding of DVB-RCS of the synchronization process,based on the brief introduction of DVB-RCS system,describes the whole process of communication terminals.Introduce the network terminal registered in the synchronization process,as well as the steps to access network.Then analyzes the process from the coarse synchronization to the fine synchronization.Finally,introduces how to maintain synchronization of the communication process and the treatment of the end communication