窄带上行信道设计及性能测试

Narrowband Uplink Shared Channel Design and Performance Test

窄带物联网(NB-IoT)是一种具有发展前景的低功耗广域网技术,使少量的数据在相当长的时间内进行通信是NB-IoT的目标之一,也是物联网应用程序的关键特征之一。一些研究工作组已经对NB-IoT的标准进行了一些定义,例如,低功耗、广覆盖、大容量和低成本等。与原有的无线通信协议相比,NB-IoT的频谱带宽仅有180kHz,因此,如何更有效地使用资源或频谱(即资源分配和调度)是一个关键问题。文章首先对物理层上层通信进行了设计,特别是上行调度;然后,在延迟情况良好的条件下对NB-IoT的资源分配问题进行了讨论;最后,对一些开放性的问题及其对应的解决方案进行了讨论,从而保证了信号传输的可靠性。

Narrow Band Internet of Things（NB-IoT）is a promising low-power Wide-Area Network（WAN）technology.Communicating a small amount of data over a long period of time is one of the goals in the NB-IoT,which is one of the key features in the IoT application.Some research groups have defined several NB-IoT standards,such as low power consumption,wide coverage,large capacity,and low cost.Compared with the conventional wireless communication protocol,NB-IoT spectrum bandwidth is only 180 kHz.Therefore,how to use resources or spectrum more effectively（i.e.,resource allocation and scheduling）is a key issue.In this paper,we first design the upper layer communication of the physical layer,especially the uplink scheduling.Then,we discuss the resource allocation of NB-IoT in the case of good delay.Finally,we discuss some open problems and their corresponding solutions,which ensure the reliability of signal transmission.