A Comprehensive Analytical Model for IEEE 802.11e QoS Differentiation Schemes under Unsaturated Traffic Loads

2008 ◽  
Author(s):  
J. Hu ◽  
G. Min ◽  
M. E. Woodward ◽  
W. Jia
Keyword(s):  
Analytical Model ◽  
Ieee 802.11E ◽  
Qos Differentiation ◽  
Traffic Loads

Throughput Analytical Model and Adaptive MAC Scheme for IEEE 802.11e EDCA Based on AIFS Differentiation

2009 ◽  
Vol 20 (4) ◽  
pp. 779-794
Author(s):  
Xiang BAI ◽  
Yu-Ming MAO ◽  
Su-Peng LENG ◽  
Jian-Bing MAO ◽  
Jun XIE
Keyword(s):  
Analytical Model ◽  
Ieee 802.11E ◽  
Mac Scheme ◽  
Ieee 802.11E Edca

Throughput Analysis for IEEE 802.11e Enhanced Distributed Channel Access

2013 ◽  
Vol 284-287 ◽  
pp. 2799-2804
Author(s):  
Yu Tae Lee
Keyword(s):  
Analytical Model ◽  
Markov Chain Model ◽  
Three Dimensional ◽  
Local Area ◽  
Numerical Approach ◽  
Ieee 802.11E ◽  
Chain Model ◽  
Channel Access ◽  
Medium Access Control Protocols ◽  
Ieee 802.11E Edca

With the increasing demand of wireless local area networks, the support of differentiated Quality of Service (QoS) has become one of the critical issues on IEEE 802.11 medium access control protocols. To support the differentiated QoS requirements, IEEE 802.11e has been standardized. IEEE 802.11e defines Enhanced Distributed Channel Access (EDCA) for access mechanism, which is a contention based channel access method and delivers traffic based on differentiated access categories for the support of QoS. This paper introduces a three dimensional Markov chain model to evaluate the performance of IEEE 802.11e EDCA mechanism with an arbitrary number of different access categories. The proposed analytical model captures the major QoS specific features in the IEEE 802.11e EDCA and hence can provide a numerical approach to pick the set of EDCA parameter values to meet the QoS requirements of each access category. The results of our proposed analytical model are verified using simulations.

scholarly journals Queuing Analysis for IEEE 802.11e Networks in Non-Saturation Environments

10.5772/50911 ◽  
2012 ◽  
Vol 9 (1) ◽  
pp. 12 ◽  
Author(s):  
Eui-Jik Kim ◽  
Sungkwan Youm ◽  
Hyo Hyun Choi
Keyword(s):  
Probability Distribution ◽  
Service Time ◽  
Mac Protocol ◽  
Local Area Networks ◽  
Local Area ◽  
Wireless Local Area Networks ◽  
Distribution Model ◽  
Ieee 802.11E ◽  
Mac Layer ◽  
Traffic Loads

This paper presents an analytical model for the performance evaluation of an IEEE 802.11e network in non-saturation environments. We first characterize the probability distribution of the MAC layer packet service time. Based on the probability distribution model of the MAC layer packet service time, we then study the queuing performance of the wireless local area networks (WLANs) at different traffic loads based on the IEEE 802.11e MAC protocol. The numerical results show that we can choose a feasible number and bandwidth of the node which determines the system performance that a user demands.

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