Semantics-Aware Communication:A Differentiated Allocation Perspective

2026-05-09

AI Summary

This work addresses the joint optimization of information timeliness and control reliability in semantic-aware wireless networked control systems under stringent computational constraints. By categorizing sampled data into regular and critical tasks based on semantic states, the study proposes a differentiated resource allocation mechanism tailored to heterogeneous task requirements. Task-aware Age of Actuation (AoA) and Cost of Missed Actuation (CoMA) are introduced to quantify freshness and reliability degradation, respectively. The controller is modeled using a discrete-time, multi-rate Geo/D/C/C queueing framework that distinguishes between the two task types in processing. Experimental results demonstrate that the proposed approach significantly enhances execution reliability for critical tasks under severe resource limitations while maintaining overall system performance.

Abstract

We study the joint optimization of timeliness and reliability in semantics-aware Wireless Networked Control Systems (WNCS) under computation resource constraints. The sampled data are categorized into regular and critical tasks based on the semantic states, facilitating differentiated resource allocation. Task-aware Age of Actuation (AoA) and Cost of Missing Actuation (CoMA), are used to characterize the task-level freshness and the reliability penalty of missed actuations, respectively. By modeling the controller as a discrete-time multi-rate Geo/D/C/C queue, we evaluate the performance of regular and critical tasks, the latter imposing higher computational demands. Results confirm that differentiated resource allocation across heterogeneous tasks effectively guarantees the actuation reliability of critical tasks in severely constrained environments.

Problem

• semantics-aware communication
• Wireless Networked Control Systems
• timeliness
• reliability
• resource allocation

Innovation

• Semantics-aware communication
• Differentiated resource allocation
• Age of Actuation (AoA)
• Cost of Missing Actuation (CoMA)
• Wireless Networked Control Systems (WNCS)