Fifth generation (5G) networks are expected to connect a huge number of Internet of Things (IoT) devices in many usage scenarios. The challenges of typical massive IoT applications with sporadic and short packet uplink transmissions are well studied, while not enough attention is given to the delivery of content of common interest, such as software/firmware updates and remote control, towards IoT devices in emerging point-to-multipoint scenarios. Moreover, the delivery of delay-sensitive IoT traffic is not sufficiently addressed in the literature. In this work we (i) identify the drawbacks of the current Single-Cell Point-to-Multipoint (SC-PTM) solution for unplanned critical traffic delivery in cellular IoT (cIoT) networks, and (ii) propose paging and multicast schemes for a fast distribution of critical updates after, e.g., bug fixes or system failures. We benchmark the performance of the proposed paging scheme against similar solutions available in the literature. Our extended SC-PTM framework is energy efficient and guarantees low service latency, as demonstrated both analytically and by simulations.

第五代（5G）网络有望在许多使用场景中连接大量的物联网（IoT）设备。人们已经很好地研究了具有零星和短数据包上行链路传输的典型大规模物联网应用所面临的挑战，而对于新兴点的物联网设备，人们却没有给予足够的关注来关注共同感兴趣的内容的交付，例如软件/固件更新和远程控制。多点方案。此外，在文献中还没有充分解决延迟敏感的物联网流量的交付问题。在这项工作中，我们（i）确定当前单蜂窝点对多点（SC-PTM）解决方案在蜂窝物联网（cIoT）网络中计划外的关键流量交付的缺点，并且（ii）针对以下问题提出寻呼和组播方案在例如之后快速分发关键更新 错误修复或系统故障。我们对照文献中可用的类似解决方案对建议的寻呼方案的性能进行基准测试。我们的扩展SC-PTM框架具有高能效，并保证了较低的服务延迟，这在分析和仿真中均得到了证明。