A Measurement-Assisted, Model-Based Admission Control Algorithm for IEEE 802.11e

2008 ◽  
Author(s):  
Brahim Bensaou ◽  
Zhen Ning Kong ◽  
Danny H.K. Tsang
Keyword(s):  
Admission Control ◽  
Control Algorithm ◽  
Ieee 802.11E ◽  
Admission Control Algorithm ◽  
Model Based

Towards voice/video application support in 802.11e WLANs: A model-based admission control algorithm

2014 ◽  
Vol 39 ◽  
pp. 41-53 ◽  
Author(s):  
Nada Chendeb Taher ◽  
Yacine Ghamri Doudane ◽  
Bachar El Hassan ◽  
Nazim Agoulmine
Keyword(s):  
Admission Control ◽  
Control Algorithm ◽  
Admission Control Algorithm ◽  
Model Based ◽  
Video Application

A MEASUREMENT-ASSISTED, MODEL-BASED ADMISSION CONTROL ALGORITHM FOR IEEE 802.11E

2009 ◽  
Vol 10 (04) ◽  
pp. 303-320 ◽  
Author(s):  
BRAHIM BENSAOU ◽  
ZHEN-NING KONG ◽  
DANNY H. K. TSANG
Keyword(s):  
Admission Control ◽  
Analytical Model ◽  
Control Algorithm ◽  
Ieee 802.11E ◽  
Ieee 802.11 Dcf ◽  
Model Based ◽  
802.11 Dcf ◽  
Performance Guarantees ◽  
Equivalent Number ◽  
Homogeneous Network

The IEEE 802.11e Enhanced Distributed Channel Access (EDCA) is designed to provide differentiated services without real hard performance guarantees, such as bandwidth and delay bounds in wireless LANs. In this paper we design a measurement-assisted, model-based call admission control (MM-CAC) scheme to support guaranteed QoS in the EDCA. For this purpose, we first develop an accurate analytical model of the legacy IEEE 802.11 DCF under non-saturation conditions; then using this model, we define the concept of equivalent number of competing entities, to convert a heterogeneous (multi-class) EDCA network into an equivalent homogeneous network and study traffic classes in isolation. Our analytical model is then invoked to decide to admit a new flow or reject it with much little computational complexity as compared to a fully fledged EDCA model. Numerical results validate our model and analysis, and simulations demonstrate the effectiveness of our MM-CAC scheme.

scholarly journals STUDY OF MOBILITY AND QoS OF 802.11 AND 802.11e WIRELESS LAN STANDARDS

2008 ◽  
Vol 4 (2) ◽  
Author(s):  
DIDI FEDOUA ◽  
FEHAM MOHAMED
Keyword(s):  
Admission Control ◽  
Wireless Lan ◽  
Control Algorithm ◽  
Local Area ◽  
Ieee 802.11E ◽  
Ieee 802.11B ◽  
Packet Losses ◽  
Admission Control Algorithm ◽  
Simulation Based ◽  
Wireless Environments

Quality of service (QoS) is a key problem in wireless environments where bandwidth is scarce and channel conditions are time varying and sometimes implies highly packet losses. IEEE 802.11b/g/a wireless LAN (WLAN) are the most widely used WLAN standards today, and the IEEE 802.11e QoS enhancement standard exists and introduces QoS support for multimedia applications. This paper presents a class based admission control algorithm for 802.11e based wireless local area networks . The strengths of our admission control is dynamicity and flexibility of the algorithm, which adapts to the situation of the BSS, like global load, number of best effort AC, and position of QSTA by report of QAP. Thus it achieves higher throughput than other admission control for 802.11 e. A summary of many good solutions on admission control for 802.11e is be done, and the model of our admission control is presented. The 802.11e standard starves the low priority traffic in case of high load, and leads to higher collision rates, and did not make a good estimate of weight of queues, so there is an unbalance enters the flows with high priorities. A discussion is presented in detail using simulation-based evaluations, with an aim of comparing results of our admission control algorithm, with the 802.11e standard and the FHCF algorithm. Results reveal an improvement of the network load and a decrease of the number of collisions.

Sign in / Sign up

Export Citation Format

Share Document