Problem
Research questions and friction points this paper is trying to address.
Version Age of Information
energy efficiency
short-packet transmission
remote monitoring
finite-blocklength
Interplay between VAoI, Packet Error Rate, and Delay for Energy-Efficient Remote Monitoring
🤖 AI Summary
This study addresses energy efficiency optimization for short-packet transmission in event-triggered remote monitoring over finite-blocklength wireless links. It presents the first joint modeling framework that integrates information freshness—quantified by Version Age of Information (VAoI)—decoding error probability, and transmission delay to formulate a long-term average energy minimization problem under power allocation constraints. By characterizing the dynamic evolution of VAoI through a Markov chain and leveraging finite-blocklength channel coding theory, the authors develop a low-complexity search algorithm to solve the VAoI-constrained optimization problem. Numerical results demonstrate that the proposed approach significantly outperforms strategies minimizing per-transmission energy consumption alone, achieving an effective trade-off between energy expenditure and information freshness across varying update arrival probabilities and blocklengths, thereby substantially reducing long-term system energy consumption.
📝 Abstract
This letter studies energy optimization of short-packet transmission for event-triggered remote monitoring over finite-blocklength wireless links. A wireless sensor node generates updates only when the source state changes, and freshness is measured by the Version Age of Information (VAoI). We model the VAoI evolution as a Markov chain and show its coupling with the packet error rate, characterized by decoding error probability, and average delay. Then, we formulate a transmit-power allocation problem that minimizes the long-term average energy consumption under a VAoI constraint and solve it using a low-complexity search method. Numerical results show that the update arrival probability and blocklength strongly affect the energy--VAoI tradeoff, and that optimizing long-term energy consumption can substantially reduce energy compared with minimizing the energy per transmission.
Innovation
Methods, ideas, or system contributions that make the work stand out.
Version Age of Information (VAoI)
finite-blocklength transmission
energy-efficient remote monitoring
packet error rate
Markov chain modeling
🔎 Similar Papers
No similar papers found.
💼 Related Jobs
