| 摘要: |
| 从LTE系统底层协议入手，结合具体实现，对随机接入过程进行了详细设计，并对随
机接入过程所涉及的具体问题进行了研究，包括PRACH时频资源的计算、响应信息的时
序接收、上行传输的时序控制以及异常情况下的处理及方案设计，最后利用规范说明与描
述语言(SDL）和树表结合表示法(TTCN)仿真，产生消息顺序图(MSC)。仿真结果表明，该
设计满足协议一致性规范。 |
| 关键词: LTE 随机接入过程 时序控制 说明与描述语言；树表结合表示法 |
| DOI： |
|
| 基金项目: |
|
| Implemention of LTE System Random Access Procedure |
| FENG Chuan,LI Xiao-wen |
| (College of Communications and Information Engineering，Chongqing University of Posts and Telecommunications,Chongqing 400065,China) |
| Abstract: |
| According to LTE underlying layer protocol, the random access procedure
is designed, specific issues involved in the design are studied, including comp
utation of PRACH frequency resources,response informat
ion receiving, uplink transmission timing control as well as handling abnormal s
ituations and program design.The corresponding design flow is given.And the MSC
(Message Sequence Chart) is produced using SDL (Specification and Description L
anguage) and TTCN (Tree Tabular Combined Notation) co-simulation.The simulation
result shows that the design meets the conformance requirement of specification. |
| Key words: LTE random access procedure timing control SDL TTCN |
