基于多业务的NB-IOT网络高并发接入优化方法研究

本文提出了一种基于多业务的窄带物联网高并发接入优化方法,当有海量物联网终端接入NB-IOT网络时,综合考虑终端所在位置的网络覆盖情况、不同业务终端对时延的敏感度要求及终端发起接入的等待时延,将物联网终端聚类到不同的接入优先等级类别。之后,将可用随机接入前导及NPRACH资源优先分配给高接入等级类别中的终端,进行随机接入请求,有效提高终端首次接入成功率和系统容量,减小接入时延。

Research on the Optimization Method of High Concurrency Access in NB-IOT Network Based on Multi-service

A high concurrency access optimization method for NB-IOT network based on multi services was proposed in this paper. When there were a large number of IOT terminals accessing NB-IOT network, the IOT terminals were clustered into different access priority categories by considering the network coverage of the terminal location, the sensitivity requirements of different service terminals to the delay and the waiting delay of the terminal initiating access. After that, the available random access preamble and NPRACH resources were allocated to the terminals in the high access level category to make random access request, which can effectively improve the first access success rate of the terminal and system capacity, and reduce the access delay.