A IEEE 802.11e HCCA Scheduler with a Reclaiming Mechanism for Multimedia Applications
Joint Authors
Ruscelli, Anna Lina
Cecchetti, Gabriele
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-22, 22 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-20
Country of Publication
Egypt
No. of Pages
22
Main Subjects
Information Technology and Computer Science
Abstract EN
The QoS offered by the IEEE 802.11e reference scheduler is satisfactory in the case of Constant Bit Rate traffic streams, but not yet in the case of Variable Bit Rate traffic streams, whose variations stress its scheduling behavior.
Despite the numerous proposed alternative schedulers with QoS, multimedia applications are looking for refined methods suitable to ensure service differentiation and dynamic update of protocol parameters.
In this paper a scheduling algorithm, Unused Time Shifting Scheduler (UTSS), is deeply analyzed.
It is designed to cooperate with a HCCA centralized real-time scheduler through the integration of a bandwidth reclaiming scheme, suitable to recover nonexhausted transmission time and assign that to the next polled stations.
UTSS dynamically computes with an O(1) complexity transmission time providing an instantaneous resource overprovisioning.
The theoretical analysis and the simulation results highlight that this injection of resources does not affect the admission control nor the centralized scheduler but is suitable to improve the performance of the centralized scheduler in terms of mean access delay, transmission queues length, bursts of traffic management, and packets drop rate.
These positive effects are more relevant for highly variable bit rate traffic.
American Psychological Association (APA)
Ruscelli, Anna Lina& Cecchetti, Gabriele. 2014. A IEEE 802.11e HCCA Scheduler with a Reclaiming Mechanism for Multimedia Applications. Advances in Multimedia،Vol. 2014, no. 2014, pp.1-22.
https://search.emarefa.net/detail/BIM-466872
Modern Language Association (MLA)
Ruscelli, Anna Lina& Cecchetti, Gabriele. A IEEE 802.11e HCCA Scheduler with a Reclaiming Mechanism for Multimedia Applications. Advances in Multimedia No. 2014 (2014), pp.1-22.
https://search.emarefa.net/detail/BIM-466872
American Medical Association (AMA)
Ruscelli, Anna Lina& Cecchetti, Gabriele. A IEEE 802.11e HCCA Scheduler with a Reclaiming Mechanism for Multimedia Applications. Advances in Multimedia. 2014. Vol. 2014, no. 2014, pp.1-22.
https://search.emarefa.net/detail/BIM-466872
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-466872