NB-IoT系统资源调度研究

[摘要] 结合窄带物联网（NB-IoT）系统的上下行帧结构、复用方式、调度单元的特点，提供了适用于NB-IoT系统的资源调度的设计方案，包括非连续的下行调度、动态的上下行调度定时以及跨多个调度单元的上下行资源分配。采用上述方案，避免了在极端或增强覆盖场景下，因下行资源的连续占用所导致的对其他终端设备的上下行授权和下行业务传输的阻塞以及下行控制资源的浪费，同时确保了相对灵活的资源分配。

[关键词] 调度定时；资源分配；覆盖增强

[Abstract] In terms of the features of uplink (UP)/downlink (DL) frame structure, multiplexing method and scheduling unit used by narrowband IoT（NB-IoT）, the design schemes for resource scheduling, which is suitable for NB-IoT is proposed in this paper, including discontinuous DL scheduling, dynamic DL/UL scheduling timing and DL/UL resource allocation across multiple scheduling units. Based on the above schemes, the blocking of the transmission of DL/UL grant and DL traffic to other users caused by the continuous occupation of DL resource for enhanced or extreme coverage and the waste of DL control resource can all be avoided, and relative flexible resource allocation can be ensured.

[Keywords] scheduling timing; resource allocation; coverage enhancement