A Novel IEEE 802.11e-Based QoS Protocol for Voice Communications over WLANs

Author(s):  
José Villalón ◽  
Pedro Cuenca ◽  
Luis Orozco-Barbosa
2017 ◽  
Vol 2 (4) ◽  
pp. 322 ◽  
Author(s):  
Boris Bellalta ◽  
Michela Meo ◽  
Miquel Oliver

VoIP service over WLAN networks is a promising alternative to provide mobile voice communications. However, several performance problems appear due to i) heavy protocoloverheads, ii) unfairness and asymmetry between the uplink and downlink flows, and iii) the coexistence with other traffic flows. This paper addresses the performance of VoIP communications with simultaneous presence of bidirectional TCP traffic, and shows how the presence of elastic flows drastically reduces the capacity of the system. To solve this limitation a simple solution is proposed using an adaptive Admission and Rate Control algorithm which tunes the BEB (Binary Exponential Backoff) parameters. Analytical results are obtained by using an IEEE 802.11e user centric queuing model based on a bulk service M=G[1;B]=1=K queue, which is able to capture the maindynamics of the EDCA-based traffic differentiation parameters (AIFS, BEB and TXOP). The results show that the improvement achieved by our scheme on the overall VoIP performance is significant.


2010 ◽  
Vol E93-B (10) ◽  
pp. 2833-2836
Author(s):  
Sung-Rok YOON ◽  
Min Li HUANG ◽  
Sangho SEO ◽  
Hiroshi OCHI ◽  
Sin-Chong PARK

2013 ◽  
Vol E96.B (2) ◽  
pp. 639-642
Author(s):  
Kang Yong LEE ◽  
Jinsul KIM ◽  
Kee Seong CHO ◽  
Won RYU ◽  
Ho-Jin LEE
Keyword(s):  

2004 ◽  
Vol 22 (10) ◽  
pp. 2095-2106 ◽  
Author(s):  
Z. Kong ◽  
D.H.-K. Tsang ◽  
B. Bensaou ◽  
D. Gao

Sign in / Sign up

Export Citation Format

Share Document