Paper Info
Title
Qos enhancement for multimedia traffics with dynamic txoplimit in ieee 802.11e
Abstract
The transmission opportunity (TXOP) mechanism defined in the IEEE 802.11e Hybrid Coordination Function (HCF) allows a wireless station to transmit a burst of frames back-to-back without re-entering the channel contention phase. Unfortunately, the adoption of a unique value for its maximum duration (named TXOPlimit) for all stations, included the AP, results in an unfair behavior, that provokes an unbalance between uplink and downlink throughputs and consequent QoS degradation. To solve this problem we propose an algorithm capable of tuning the TXOPlimit value at the AP, in order to dynamically change its channel resources according to the current traffic conditions. Extensive simulations show that the proposed algorithm allows to enhance significantly QoS performance of multimedia traffics and to increase the global WLAN throughput.
Year
DOI
Venue
2007
10.1145/1298239.1298243
Q2SWinet
Keywords
Field
DocType
current traffic condition,consequent qos degradation,txoplimit value,multimedia traffic,downlink throughput,qos enhancement,channel resource,unique value,hybrid coordination function,qos performance,dynamic txoplimit,proposed algorithm,channel contention phase,qos,802 11e
Wireless,IEEE 802.11e-2005,Computer science,Communication channel,Computer network,Quality of service,Real-time computing,IEEE 802,Throughput,Multimedia,Traffic conditions,Telecommunications link
Conference
Citations 
PageRank 
References 
5
0.52
6
Authors
2
Name
Order
Citations
PageRank
Alessandro Andreadis13710.36
Riccardo Zambon2185.37