Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2018, Vol. 41 ›› Issue (6): 45-51.doi: 10.13190/j.jbupt.2018-035

• Papers • Previous Articles     Next Articles

Optimal Scheme of Uplink Resource Allocation for Ultra-Reliable and Low-Latency in Massive Machine Type Communications with Power Control

XIE Xian-zhong1, LI Jia1, HUANG Qian2, CHEN Jie2   

  1. 1. Institute of Personal Communications, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
    2. Institute of Broadband Access Networks, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2018-04-20 Online:2018-12-28 Published:2018-12-24

Abstract: An optimal scheme of uplink resource allocation for ultra-reliable and low-latency (URLL) in massive machine type communications (mMTC) with power control is proposed. Considering time division duplexing (TDD) cellular networks, the reverse power control scheme of uplink transmission by using the distance measurement capability of multi-antenna TDD base station is designed and the link-based reliability function based on distance is derived. Further, the optimization model of uplink radio resources is built. Then the characteristic of the link reliability function is analyzed and an optimal transmission error probability algorithm based on golden section is proposed. Furthermore, an algorithm to minimize the total bandwidth required by the system is given. Multiple sub-channels may be assigned to each user, and the user selects the sub-channel by judging whether the channel gain exceeds the threshold. Finally, simulation experiments show the improvement of latency and reliability, as well as the performance advantages of total bandwidth, power consumption and so on.

Key words: massive machine type communications, ultra-reliable and low-latency, power control, resource optimization, total bandwidth, power consumption

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