The Journal of China Universities of Posts and Telecommunications ›› 2021, Vol. 28 ›› Issue (3): 28-35.doi: 10.19682/j.cnki.1005-8885.2021.0014

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Joint user pairing and power allocation in multi-slicing NOMA system


  • Received:2020-07-05 Revised:2020-11-23 Online:2021-06-30 Published:2021-06-22
  • Contact: yong zhang
  • Supported by:
    Headquarters Science and Technology Project of State Grid Corporation of China; National Natural Science Foundation of China


Joint user pairing and power allocation approach is investigated to meet the rate requirement of enhanced mobile broadband (eMBB) slicing and delay constraint of ultra-reliable low-latency communication (URLLC) slicing simultaneously in downlink non-orthogonal multiple access ( NOMA) system. For maximizing the proportional fairness among mobile terminals, a two-step algorithm is proposed. For a given user sets, the optimal user pairing sets and the factor of the power allocation in a group were obtained to ensure the quality of service (QoS) and the isolation between different types of slicings. Simulation results show that the proposed joint algorithm can provide better throughput than orthogonal multiple access (OMA).

Key words:

non-orthogonal multiple access (NOMA), network slicing, power allocation, user pairing