窄带上行信道设计及性能测试
Narrowband Uplink Shared Channel Design and Performance Test
摘要
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180 kHz,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。
Abstract
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.
李贵勇, 杨艳娟, 李安艺, 邢苹苹. 窄带上行信道设计及性能测试[J]. 光通信研究, 2018, 44(3): 64. LI Gui-yong, YANG Yan-juan, LI An-yi, XING Ping-ping. Narrowband Uplink Shared Channel Design and Performance Test[J]. Study On Optical Communications, 2018, 44(3): 64.