One of the main characteristics of the DVB-S2/S2X standard is the capability of using the Adaptive Coding and Modulation (ACM) technique. Differently from Variable Coding and Modulation (VCM), ACM provides a feedback path in the return channel for dynamically varying protection error levels in accordance with different channel conditions. In this article, a double-layer packet scheduling mechanism able to support different QoS levels monitoring the propagation and channel conditions is proposed. It consists of a Two-Stage Scheduler (TSS) approach and proposes two novel schedulers to be used in the first and second stage: an Adaptive Priority-based Scheduling (APS) able to account QoS requirements is proposed for the first stage; an improved version of Proportional Fair queueing (PF) called PF with Padding and Packing (PF-PP), able to select and transmit in the forward link frames in accordance to an appropriate fair policy is designed for the second stage. Performed experiments show an improvement of the overall system performance in terms of packet drop rate, delay jitter, and packets delay.

Design of a Two-Stage Scheduling Scheme for DVB-S2/S2X Satellite Architecture

Mauro Tropea
Methodology
;
Floriano De Rango
Conceptualization
;
2021-01-01

Abstract

One of the main characteristics of the DVB-S2/S2X standard is the capability of using the Adaptive Coding and Modulation (ACM) technique. Differently from Variable Coding and Modulation (VCM), ACM provides a feedback path in the return channel for dynamically varying protection error levels in accordance with different channel conditions. In this article, a double-layer packet scheduling mechanism able to support different QoS levels monitoring the propagation and channel conditions is proposed. It consists of a Two-Stage Scheduler (TSS) approach and proposes two novel schedulers to be used in the first and second stage: an Adaptive Priority-based Scheduling (APS) able to account QoS requirements is proposed for the first stage; an improved version of Proportional Fair queueing (PF) called PF with Padding and Packing (PF-PP), able to select and transmit in the forward link frames in accordance to an appropriate fair policy is designed for the second stage. Performed experiments show an improvement of the overall system performance in terms of packet drop rate, delay jitter, and packets delay.
2021
Quality of service; Digital video broadcasting; Scheduling; Satellite broadcasting; Satellites; Standards; Scheduling algorithms
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/328298
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 20
  • ???jsp.display-item.citation.isi??? ND
social impact