Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (12): 4064-4072.doi: 10.12305/j.issn.1001-506X.2023.12.37

• Communications and Networks • Previous Articles    

An improved algorithm of fast-uplink grant access for MTC

Fatang CHEN, Xia YANG, Caijun HAN   

  1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunication, Chongqing 400065, China
  • Received:2023-01-16 Online:2023-11-25 Published:2023-12-05
  • Contact: Xia YANG

Abstract:

Fast-uplink grant access is one of the key technologies of massive machine-type communication, which alleviates the shortage of uplink shared channel resources and efficiently schedules for quality of service (QoS) such as delay and rate which are important directions for its optimization. Aiming at the problem above, a fast-uplinkgrant access algorithm using multi-armed bandit (MAB) learning and power-domain non-orthogonal multiple access (PD-NOMA) technology is proposed. The access algorithm searches two types of devices which have requirements of high access rate with low access tolerance delay and low access rate with low access tolerance delay through multi-channel MAB, which allows those two equipments to be preferentially scheduled and multiplex use uplink resources for access. Simulation results show that the algorithm reduces the uplink resource waste probability of the system, improves the access capability, reduces the impact of access rate loss caused by non-orthogonal multiple access (NOMA), and optimizes the system QoS.

Key words: machine-type communication, fast-uplink grant access, multi-armed bandit (MAB), non-orthogonal multiple access (NOMA)

CLC Number: 

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