학술논문

Guaranteed Dynamic Scheduling of Ultra-Reliable Low-Latency Traffic via Conformal Prediction
Document Type
Periodical
Source
IEEE Signal Processing Letters IEEE Signal Process. Lett. Signal Processing Letters, IEEE. 30:473-477 2023
Subject
Signal Processing and Analysis
Computing and Processing
Communication, Networking and Broadcast Technologies
Ultra reliable low latency communication
Reliability
Resource management
Predictive models
Europe
Reliability engineering
Dynamic scheduling
URLLC
eMBB
5G
6G
conformal prediction
scheduling
Language
ISSN
1070-9908
1558-2361
Abstract
The dynamic scheduling of ultra-reliable and low-latency communication traffic (URLLC) in the uplink can significantly enhance the efficiency of coexisting services, such as enhanced mobile broadband (eMBB) devices, by only allocating resources when necessary. The main challenge is posed by the uncertainty in the process of URLLC packet generation, which mandates the use of predictors for URLLC traffic in the coming frames. In practice, such prediction may overestimate or underestimate the amount of URLLC data to be generated, yielding either an excessive or an insufficient amount of resources to be pre-emptively allocated for URLLC packets. In this letter, we introduce a novel scheduler for URLLC packets that provides formal guarantees on reliability and latency irrespective of the quality of the URLLC traffic predictor . The proposed method leverages recent advances in online conformal prediction (CP) , and follows the principle of dynamically adjusting the amount of allocated resources so as to meet reliability and latency requirements set by the designer.