Power Control Schemes for Enhancing Energy Efficiency and Reliability in Uplink RACH-less SGF-NOMA Protocol 


Vol. 51,  No. 3, pp. 758-767, Mar.  2026
10.7840/kics.2026.51.3.758


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  Abstract

This paper proposes a RACH-less Semi-Grant-Free Non-Orthogonal Multiple Access(SGF-NOMA) protocol to overcome the limitations of the Grant-based Random Access(GB RA) in Internet of Battlefield Things(IoBT). The IoBT is a network that interconnects various battlefield nodes to support real-time situation awareness, command and control(C2), and intelligence, surveillance, and reconnaissance(ISR) operations, where both energy efficiency and communication reliability is crucial. In the proposed protocol, the base station broadcasts the Enhanced Access Barring(EAB) parameter to control the access scale, and Grant-free(GF) users share the frequency resources using predefined power levels. Furthermore, the Channel-Condition-based Access(CC-A) and the High-Power Limitation(HPL) schemes are introduced to achieve GF average transmit power reduction and GB interference mitigation, and their performance is validated through simulation.

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[IEEE Style]

J. Park and H. Baek, "Power Control Schemes for Enhancing Energy Efficiency and Reliability in Uplink RACH-less SGF-NOMA Protocol," The Journal of Korean Institute of Communications and Information Sciences, vol. 51, no. 3, pp. 758-767, 2026. DOI: 10.7840/kics.2026.51.3.758.

[ACM Style]

Juyeol Park and Hoki Baek. 2026. Power Control Schemes for Enhancing Energy Efficiency and Reliability in Uplink RACH-less SGF-NOMA Protocol. The Journal of Korean Institute of Communications and Information Sciences, 51, 3, (2026), 758-767. DOI: 10.7840/kics.2026.51.3.758.

[KICS Style]

Juyeol Park and Hoki Baek, "Power Control Schemes for Enhancing Energy Efficiency and Reliability in Uplink RACH-less SGF-NOMA Protocol," The Journal of Korean Institute of Communications and Information Sciences, vol. 51, no. 3, pp. 758-767, 3. 2026. (https://doi.org/10.7840/kics.2026.51.3.758)
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pISSN : 1226 - 4717
eISSN : 2287 - 3880