一种基于TETRA空中接口DLL信令的仿真模型

A Simulation Model Based on Signal Flow of DLL in the Air Interface of TETRA Protocol

TETRA是ETSI制定的数字集群通信标准,首先简单介绍了TETRA空中接口数据链路层的结构以及和它相关的信令流程。由于TETRA移动终端的硬件和软件设计是同时进行的,为了解决软件在开发过程中没有硬件验证平台的问题,提出了一种用于信令流程测试与仿真的模型,此模型采用了Windows平台下多线程来仿真目标系统,同时使用Socket机制实现数据通道和控制通道。最后又从Block的仿真、数据共享、同步和互斥三方面详尽的分析了使用此模型对数据链路层信令进行仿真的方法。

TETRA is a Digital Trunked Radio protocol recommended by ETSI.The paper first introduces the structure and single flow of the data link layer in the air interface of TETRA protocol briefly.Since the hardware and software designs of the TETRA mobile terminal are carried out simultaneously,in order to settle the problem that the software has no hardware test platform when it is designed,a model used to simulate and test the signal flow is discussed.This model uses multithread of the Window platform to simulate the target system,and employs the Socket technique to implement the data channel and control channel.Finally,from simulating Block,data sharing,synchronization and mutex,the paper analyzes how to use this model to simulate the DLL signal flow in detail.