The fifth generation of cellular communication systems is foreseen to enable
a multitude of new applications and use cases with very different requirements.
A new 5G multiservice air interface needs to enhance broadband performance as
well as provide new levels of reliability, latency and supported number of
users. In this paper we focus on the massive Machine Type Communications (mMTC)
service within a multi-service air interface. Specifically, we present an
overview of different physical and medium access techniques to address the
problem of a massive number of access attempts in mMTC and discuss the protocol
performance of these solutions in a common evaluation framework.

本文介绍了 5G 多业务空中接口下的 massive Machine Type Communications (mMTC) 服务，重点讨论了使用不同的物理技术和介质访问技术来解决 mMTC 中访问尝试数量巨大的问题，并在共同的评估框架下讨论了这些解决方案的协议性能。