Design and evaluation of a flexible Advance bandwidth Reservation Algorithm for media production networks

Abstract

Abstract-In media production companies, exchanging large media files is daily business. Due to the predictable nature of network transfers in the media production industry, timeslotbased advance bandwidth reservation results in higher bandwidth utilization and improved network performance. Timeslot-based advance reservation can be based on flexible or fixed timeslot sizes. As the flexible approach is highly beneficial under bursty and limited network traffic conditions, this paper focuses on that approach. We design, implement and evaluate a novel algorithm based on flexible timeslots, taking into account the specific characteristics of media transfers and compare it with a fixed timeslot algorithm to quantitatively study the quality and complexity of both scenarios. We have defined a set of realistic media production use cases that serve as a basis for the evaluations. Results shows that the highest admittance ratio is consistently achieved by using the flexible time interval algorithm, while the execution time of this approach is up to 12 times lower, compared to the approach with fixed timeslot sizes.

An Advance Reservation System to Improve Network Resource Utilization in Software-Defined Networks

“…Most of them opt for the flexibility provided by dynamic time slots even if managing such structures is more complex. In [22], Barshan et al propose a mechanism for improving the admittance ratio of video transfers in media production networks, which are a specific use case characterized by an interdependence among different video transfers.…”

“…In [22], Barshan et al present a bandwidth reservation model specifically tailored to the characteristics of media production networks. The proposed solution is based on time slots of variable size, and a timeslot is a time interval in which reservations remain invariant.…”

Elastic Timeslot-Based Advance Reservation Algorithm for Enterprise Video Conferencing Systems

“…To cope with the high time complexity of reservation-based approaches, the timeslot-based approach has been proposed as an efficient way [2]. According to the way the time domain is processed, the existing timeslotbased approaches can be classified into the static timeslotbased approach [2], dynamic timeslot-based approach [2] and flexible timeslot-based approach [3]- [5]. The authors in [3] theoretically analyzed the advantages and drawbacks of the static and flexible timeslot-based approach and concluded that the static timeslot-based approach is less effective in terms of resource utilization than the flexible timeslot-based approach.…”

“…In this paper, we further analyze the performance of the static, dynamic and flexible timeslot-based approaches in terms of resource utilization and computational complexity. Though the flexible timeslot-based approach is highly beneficial when dealing with bursty traffic in a low-demand network with long-term downtimes, it is ineffective in a highdemand network [3], [5]. A resilient AR approach based on flexible timeslots, in combination with a runtime adaptation approach, has been introduced to provide flexible, reliable and adaptive advance reservation to an AR system [4].…”

“…Although the flexible timeslot-based approach is very effective for a low network load, it is not suitable for a large network load [3], [5]. In an enterprise network, it is common to have hundreds of conferences online at the same time, and video communication is possible between any two conference participants.…”