Open AccessA novel MAC protocol with independent double-pilot scheme and NOMA for MTC in IoT networks
Author(s) -
Jihang Zhao,
Cong Wang,
Wenfeng Ma,
Hui Tian,
Xia Wu,
Xun Cao,
Yuanxiang Yao
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2004/1/012016
Subject(s) - computer science , computer network , network packet , default gateway , internet of things , noma , throughput , protocol (science) , wireless , scheme (mathematics) , embedded system , telecommunications , telecommunications link , medicine , mathematical analysis , alternative medicine , mathematics , pathology
With the rapid growth of IoT devices, machine communication is becoming more and more popular in 5G wireless communication systems. This paper proposes a novel MAC protocol for the Internet of Things (IoT) in a scenario with a gateway and multiple IoT devices. The IoT devices with packets (active IoT devices) send independent double-pilot(IDP). The gateway takes the number and ID of IoT devices and allocates appropriate power to IoT devices. These IoT devices adjust the power and transmit packets using the Power domain Non-Orthogonal Multiple Access Protocol (PD-NOMA). Compared with the traditional single pilot scheme (TSP), the independent double-pilot can dramatically reduce the pilot collision probability, although it will probably bring a moderate increase in detection workload. Furthermore, the IDP-NOMA protocol proposed in this paper dramatically improves the system throughput and the probability of transmission success.