NB-IoT系统随机接入过程的设计与实现

张德民; 张颖; 周述淇; 舒强

doi:doi:10.13756/j.gtxyj.2018.04.018

光通信研究, 2018 (4): 74, 网络出版: 2018-08-28

NB-IoT系统随机接入过程的设计与实现

Design and Implementation of NB-IoT System Random Access Process

论文大纲

张德民张颖 ^*周述淇舒强

作者单位

重庆邮电大学重庆市移动通信技术重点实验室，重庆 400065

窄带物联网随机接入媒体接入控制无线资源控制 NB-IoT random access medium access control radio resource control

摘要

基于蜂窝网络的窄带物联网(NB-IoT)的随机接入过程相对于长期演进（LTE)而言，进行了大量简化，同时针对NB-IoT系统的相关特性也作了适当修改。文章详细分析了NB-IoT系统中基于竞争模式的随机接入过程，包括覆盖等级选择、资源配置和实现流程等；对NB-IoT新添加的挂起与恢复过程进行了系统研究，并设计了相应的流程图。基于测试及测试控制表示法第3版（TTCN-3）测试平台，搭建了一致性测试环境，对随机接入过程进行了测试，测试结果与预期结果相同，验证了其与标准的一致性。

Abstract

Cellular network based random access process of the Narrow Band Internet of Things (NB-IoT) is much simpler than Long Term Evolution (LTE). It is also appropriately modified for its features. In this paper, the random access process based on competitive mode in NB-IoT system is analyzed in detail, including coverage level selection, resource allocation, implementation process and so on. At the same time, the newly added suspend and resume process of NB-IoT is systematically studied, and the corresponding flow chart is designed. Based on the TTCN-3 test platform, a conformance test environment is built, and the random access process is tested. The test results are the same as the expected results, which verify the consistency with the standard.

参考文献

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张德民, 张颖, 周述淇, 舒强. NB-IoT系统随机接入过程的设计与实现[J]. 光通信研究, 2018, 44(4): 74. ZHANG De-min, ZHANG Ying, ZHOU Shu-qi, SHU Qiang. Design and Implementation of NB-IoT System Random Access Process[J]. Study On Optical Communications, 2018, 44(4): 74.

NB-IoT系统随机接入过程的设计与实现

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