...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Wireless communications & mobile computing >Energy-Efficient Uplink Resource Units Scheduling for Ultra-Reliable Communications in NB-IoT Networks
【24h】

Energy-Efficient Uplink Resource Units Scheduling for Ultra-Reliable Communications in NB-IoT Networks

机译：NB-IoT网络中超可靠通信的节能上行链路资源单元调度

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

For 5G wireless communications, the 3GPP Narrowband Internet of Things (NB-IoT) is one of the most promising technologies, which provides multiple types of resource unit (RU) with a special repetition mechanism to improve the scheduling flexibility and enhance the coverage and transmission reliability. Besides, NB-IoT supports different operation modes to reuse the spectrum of LTE and GSM, which can make use of bandwidth more efficiently. The IoT application grows rapidly; however, those massive IoT devices need to operate for a very long time. Thus, the energy consumption becomes a critical issue. Therefore, NB-IoT provides discontinuous reception operation to save devices’ energy. But, how to further reduce the transmission energy while ensuring the required ultra-reliability is still an open issue. In this paper, we study how to guarantee the reliable communication and satisfy the quality of service (QoS) while minimizing the energy consumption for IoT devices. We first model the problem as an optimization problem and prove it to be NP-complete. Then, we propose an energy-efficient, ultra-reliable, and low-complexity scheme, which consists of two phases. The first phase tries to optimize the default transmit configurations of devices which incur the lowest energy consumption and satisfy the QoS requirement. The second phase leverages a weighting strategy to balance the emergency and inflexibility for determining the scheduling order to ensure the delay constraint while maintaining energy efficiency. Extensive simulation results show that our scheme can serve more devices with guaranteed QoS while saving their energy effectively.
机译：对于5G无线通信，3GPP窄带物联网（NB-IoT）是最有前途的技术之一，它为多种类型的资源单元（RU）提供特殊的重复机制，以提高调度灵活性并增强覆盖和传输可靠性。此外，NB-IoT支持不同的操作模式以重用LTE和GSM的频谱，从而可以更有效地利用带宽。物联网应用快速增长;但是，这些大型物联网设备需要长时间运行。因此，能耗成为关键问题。因此，NB-IoT提供不连续的接收操作以节省设备的能量。但是，如何在确保所需的超可靠性的同时进一步降低传输能量仍然是一个悬而未决的问题。在本文中，我们研究如何在最小化物联网设备能耗的同时保证可靠的通信并满足服务质量（QoS）。我们首先将问题建模为优化问题，并证明它是NP完全的。然后，我们提出了一种节能，超可靠和低复杂度的方案，该方案包括两个阶段。第一阶段尝试优化设备的默认传输配置，这些配置会产生最低的能耗并满足QoS要求。第二阶段利用加权策略来平衡紧急情况和灵活性，以确定调度顺序，以确保延迟约束，同时保持能效。大量的仿真结果表明，我们的方案可以在保证QoS的同时为更多设备提供服务，同时有效地节省能源。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号