一种基于双队列模型的分布式MTD接入方法

A Distributed MTD Access Method based on Dual Queue Model

机器类型通信(Machine Type Communication,MTC)在5G场景中的应用比例大幅增长。这一类型通信的主要目的是在尽可能减少人工干预的情况下,实现机器类型设备(Machine Type Device,MTD)之间的自主通信。在大规模机器类型通信(massive Machine Type Communication,m MTC)场景中,随机接入(Random Access,RA)冲突是导致网络性能较差的关键因素。为了减轻RA阶段的MTD冲突,提出一种基于双队列分析模型的分布式接入控制方法。相较于中心式控制方法,分布式方法可以明显降低信令开销。此外,仿真表明,提出的方法在系统中设备数量较为稳定时具有更高的吞吐量。

The application proportion of MTC(Machine Type Communication) in 5 G scenarios will increase greatly. This type of communication is mainly aimed at realizing the autonomous communication between MTD(Machine Type Devices) under the condition of minimizing the manual intervention. In the MTC scenario, RA(Random Access) conflict is the key factor that leads to poor network performance. In order to reduce the MTD conflict in RA stage, a distributed access control method based on the dual queue analysis model is proposed. Compared with the central control method, the distributed method can reduce signaling cost significantly. In addition, the simulation results indicate that the proposed method has higher throughput performance when the number of equipment in the system is relatively stable.