Evaluation of scalability of Hybrid Wireless Mesh Protocol in IEEE 802.11

2015 ◽  
Author(s):  
S.J. Sooriyaarachchi ◽  
W.A.C. Fernando ◽  
C.D. Gamage
Keyword(s):  
Ieee 802.11 ◽  
Wireless Mesh ◽  
Hybrid Wireless Mesh Protocol

scholarly journals A Novel Packet Aggregation Mechanism for Enhancing VoIP Performance on IEEE 802.11 Wireless Mesh Networks

2020 ◽  
Vol 8 (8) ◽  
pp. 01-08
Author(s):  
Guan-Hsiung Liaw et al.
Keyword(s):  
Ieee 802.11 ◽  
Mesh Networks ◽  
Mesh Network ◽  
Time Intervals ◽  
Aggregation Mechanism ◽  
Packet Aggregation ◽  
Wireless Mesh ◽  
Aggregation Scheme ◽  
Voice Data ◽  
The Voice

In 802.11 Wireless Mesh Network (WMN), bandwidth will be wasted much for transferring VoIP flows since each voice frame must contain relatively large amount of protocol data. “Packet Aggregation” mechanism can be applied to merge the voice data of multiple VoIP flows into one frame for transmission. It reduces the waste on bandwidth and increases the maximum number of successful VoIP calls. In addition, the mechanism “MCF controlled channel access” (MCCA) defined in 802.11 standard can be used to obtain better QoS than adopting default EDCA mechanism. In MCCA, mesh stations which wants to transfer VoIP flows can reserve time intervals of the medium for transmission and this reservation will be advertised to their neighbors. It is why MCCA causes less medium contentions than EDCA. In this paper, a mechanism to transfer VoIP flows in IEEE 802.11 WMN by MCCA with packet aggregation scheme is proposed. The effectiveness of the proposed mechanism is shown by simulation results. In addition, the problem named as Routing-Packet Aggregation / De-aggregation-Scheduling optimization problem (abbr. RPADS problem) derived from the proposed mechanism is also studied. A heuristic algorithm for RPADS problem to maximize the total number of supported calls is also proposed.

scholarly journals A novel localised authentication scheme in IEEE 802.11 based Wireless Mesh Networks

2008 ◽  
Vol 3 (2) ◽  
pp. 122 ◽  
Author(s):  
Xiaodong Lin ◽  
Xinhua Ling ◽  
Haojin Zhu ◽  
Pin Han Ho ◽  
Xuemin Sherman Shen
Keyword(s):  
Ieee 802.11 ◽  
Wireless Mesh Networks ◽  
Mesh Networks ◽  
Authentication Scheme ◽  
Wireless Mesh

FH-MAC

2011 ◽  
pp. 313-329
Author(s):  
Djamel Tandjaoui ◽  
Messaoud Doudou ◽  
Imed Romdhani
Keyword(s):  
Access Control ◽  
Medium Access Control ◽  
Ieee 802.11 ◽  
Wireless Mesh Networks ◽  
Control Method ◽  
Mesh Networks ◽  
Mac Protocol ◽  
Medium Access ◽  
Wireless Mesh ◽  
Channel Diversity

In this article, the authors propose a new hybrid MAC protocol named H-MAC for wireless mesh networks. This protocol combines CSMA and TDMA schemes according to the contention level. In addition, it exploits channel diversity and provides a medium access control method that ensures the QoS requirements. Using ns-2 simulator, we have implemented and compared H-MAC with other MAC protocol used in Wireless Network. The results showed that H-MAC performs better compared to Z-MAC, IEEE 802.11 and LCM-MAC.

FH-MAC

2009 ◽  
Vol 1 (4) ◽  
pp. 40-56
Author(s):  
Djamel Tandjaoui ◽  
Messaoud Doudou ◽  
Imed Romdhani
Keyword(s):  
Access Control ◽  
Medium Access Control ◽  
Ieee 802.11 ◽  
Wireless Mesh Networks ◽  
Control Method ◽  
Mesh Networks ◽  
Mac Protocol ◽  
Medium Access ◽  
Wireless Mesh ◽  
Channel Diversity

In this article, the authors propose a new hybrid MAC protocol named H-MAC for wireless mesh networks. This protocol combines CSMA and TDMA schemes according to the contention level. In addition, it exploits channel diversity and provides a medium access control method that ensures the QoS requirements. Using ns-2 simulator, we have implemented and compared H-MAC with other MAC protocol used in Wireless Network. The results showed that H-MAC performs better compared to Z-MAC, IEEE 802.11 and LCM-MAC.

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