loading page

Satisfying Strict Deadlines for Cellular Internet of Things through Hybrid Multiple Access
  • Onur Gamgam,
  • Ezhan Karasan
Onur Gamgam
Bilkent Universitesi Elektrik ve Elektronik Muhendisligi

Corresponding Author:[email protected]

Author Profile
Ezhan Karasan
Bilkent Universitesi Elektrik ve Elektronik Muhendisligi
Author Profile


Latency-constrained aspects of cellular Internet of Things (IoT) applications rely on Ultra-Reliable and Low Latency Communications (URLLC) which highlight research on satisfying strict deadlines. In this study, we address the problem of latency constrained communications with strict deadlines under average power constraint using Hybrid Multiple Access (MA) which consists of both Orthogonal MA (OMA) and power domain Non-Orthogonal MA (NOMA) as transmission scheme options. We aim to maximize the timely throughput, which represents the average number of successfully transmitted packets before deadline expiration, where expired packets still waiting in the buffer are dropped. We use Lyapunov stochastic optimization methods to develop a dynamic power assignment algorithm for minimizing the packet drop rate while satisfying time average power constraints. Numerical results show that Hybrid MA improves the timely throughput compared to conventional OMA by up to 46% and on the average by more than 21% while satisfying average power constraints.
26 Dec 2022Submitted to Transactions on Emerging Telecommunications Technologies
26 Dec 2022Submission Checks Completed
26 Dec 2022Assigned to Editor
26 Dec 2022Review(s) Completed, Editorial Evaluation Pending
18 Jan 2023Reviewer(s) Assigned
10 Mar 2023Editorial Decision: Revise Major
02 May 20231st Revision Received
03 May 2023Submission Checks Completed
03 May 2023Assigned to Editor
03 May 2023Review(s) Completed, Editorial Evaluation Pending
03 May 2023Reviewer(s) Assigned
02 Jun 2023Editorial Decision: Accept