摘要
从时分同步的码分多址(TD-SCDMA)长期演进(TD-LTE)随机接入过程的应用场景入手,详细介绍基于竞争的随机接入过程的基本原理,并以网络端为例,设计了相应的随机接入过程媒体接入控制(MAC)子层的流程。通过说明和描述语言(SDL)以及树表结合表示法(TTCN)协仿真,生成随机接入过程的消息顺序图(MSC),验证了信号流程设计及数据的正确性。该流程设计已应用于TD-LTE无线综合测试仪表的开发中。
On the basis of the application scenarios of the TD-LTE random access process,this paper introduces in detail the fundamental principle of the competition-based random access process,taking network end as an example,designs an appropriate flow of the random access process Media Access Control(MAC) sub-layer.It generates its Message Sequence Chart(MSC) by SDL and TTCN co-simulation,verifying the correctness of the signal flow design and data.This design flow has been applied to the development of TD-LTE wireless integrated test instrument.
出处
《光通信研究》
北大核心
2011年第3期67-70,共4页
Study on Optical Communications
基金
国家科技重大专项资助项目(2009ZX03002-009)
