Communications and Networking. 13th EAI International Conference, ChinaCom 2018, Chengdu, China, October 23-25, 2018, Proceedings

Research Article

Joint QoS-Aware Downlink and Resource Allocation for Throughput Maximization in Narrow-Band IoT with NOMA

  • @INPROCEEDINGS{10.1007/978-3-030-06161-6_1,
        author={Wei Chen and Heli Zhang and Hong Ji and Xi Li},
        title={Joint QoS-Aware Downlink and Resource Allocation for Throughput Maximization in Narrow-Band IoT with NOMA},
        proceedings={Communications and Networking. 13th EAI International Conference, ChinaCom 2018, Chengdu, China, October 23-25, 2018, Proceedings},
        proceedings_a={CHINACOM},
        year={2019},
        month={1},
        keywords={Narrow band internet of things Downlink resource allocation algorithm Quality of service (QoS) Throughput maximization},
        doi={10.1007/978-3-030-06161-6_1}
    }
    
  • Wei Chen
    Heli Zhang
    Hong Ji
    Xi Li
    Year: 2019
    Joint QoS-Aware Downlink and Resource Allocation for Throughput Maximization in Narrow-Band IoT with NOMA
    CHINACOM
    Springer
    DOI: 10.1007/978-3-030-06161-6_1
Wei Chen1,*, Heli Zhang1,*, Hong Ji1,*, Xi Li1,*
  • 1: Beijing University of Posts and Telecommunications
*Contact email: weic@bupt.edu.cn, zhangheli@bupt.edu.cn, jihong@bupt.edu.cn, lixi@bupt.edu.cn

Abstract

Narrow-Band Internet of Things (NB-IoT) is 3GPPs cellular technology designed for Low-Power Wide Area Network (LPWN) and it is a promising approach that NB-IoT combines with NOMA which is designed for accommodating more devices in the 5G era. Previous works mainly focus on uplink channel resource allocation to achieve connectivity maximization in NB-IoT with NOMA; however, few articles consider NB-IoT downside issues and downlink resource allocation problem to achieve maximum system throughput has not been studied in NB-IoT with NOMA. Thus, in this paper to provide a reliable and seamless service for NB-IoT users (NUs) and maximizing network downlink throughput, we propose a resource allocation algorithm for joint equipment QoS requirements and resource allocation fairness. In this scheme, we design algorithm to implement the mapping between NUs and subchannels for suboptimal system throughput. Then we convert the power allocation problem of the NUs on the same subchannel into a DC problem and we design algorithm to solve it to get suboptimal solution. Numerical results show that the proposed scheme achieves a better performance compared with exiting schemes in terms of the system throughput.