Paper Info
Title
Elastic QoS Scheduling with Step-by-Step Propagation in IEEE 802.11e Networks with Multimedia Traffic
Abstract
The spreading diffusion of wireless devices and the crowded coexistence of multimedia applications greedy of bandwidth and with strict requirements stress the service provisioning offered by wireless technologies. WiFi is a reference for wireless connectivity and it requires a continuous evolution of its mechanism in order to follow increasingly demanding service needs. In particular, despite the evolution of physical layer, some critical contexts, such as industrial networks, telemedicine, telerehabilitation, and virtual training, require further refined improvements in order to ensure the respect of strict real-time service requirements. In this paper an in-depth analysis of Dynamic TXOP HCCA (DTH) MAC enhanced centralized scheduler is illustrated and it is further refined introducing a new improvement, DTH with threshold. DTH and DTH with threshold can be integrated with preexisting centralized schedulers in order to improve their performances, without any overprovisioning that can negatively impact on the admission control feasibility test. Indeed, without modifying the centralized scheduler policy, they combine together the concepts of reclaiming transmission time and statistical estimation of the traffic profile in order to provide, at each polling, an instantaneous transmission time tailored to the variable traffic requirements, increasing, when necessary, the service data rate. These mechanisms can coexist with advanced physical layer-based solutions, providing the required service differentiation. Experimental results and theoretical analysis, based on elastic scheduler theory, show that they are effective especially in the case of Variable Bit Rate traffic streams in terms of transmission queues length, packets loss, delay, and throughput.
Year
DOI
Venue
2019
10.1155/2019/2925891
WIRELESS COMMUNICATIONS & MOBILE COMPUTING
Field
DocType
Volume
Wireless,Admission control,Computer science,Network packet,Computer network,Polling,Physical layer,IEEE 802,Throughput,Transmission time,Multimedia,Distributed computing
Journal
2019
ISSN
Citations 
PageRank 
1530-8669
2
0.50
References 
Authors
0
3
Name
Order
Citations
PageRank
Anna Lina Ruscelli1486.06
Gabriele Cecchetti2496.11
Piero Castoldi340378.07