Performance evaluation of channel reservation schemes for reservation-based MAC protocols with different priorities

2012 ◽  
Author(s):  
Nitthita Chirdchoo ◽  
Piya Kovintavewat ◽  
Norrarat Wattanamongkhol ◽  
Lunchakorn Wuttisittikulkij ◽  
Pisit Vanichchanunt ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Mac Protocols ◽  
Channel Reservation

scholarly journals MAC Protocols Used by Wireless Sensor Networks and a General Method of Performance Evaluation

2012 ◽  
Vol 8 (1) ◽  
pp. 834784 ◽  
Author(s):  
Joseph Kabara ◽  
Maria Calle
Keyword(s):  
Wireless Sensor Networks ◽  
Performance Evaluation ◽  
Sensor Networks ◽  
Performance Analysis ◽  
Communication Technology ◽  
Mac Protocols ◽  
Wireless Sensor ◽  
Mac Layer ◽  
Medium Access ◽  
General Method

Many researchers employ IEEE802.15.4 as communication technology for wireless sensor networks (WSNs). However, medium access control (MAC) layer requirements for communications in wireless sensor networks (WSNs) vary because the network is usually optimized for specific applications. Thus, one particular standard will hardly be suitable for every possible application. Two general categories of MAC techniques exist: contention based and schedule based. This paper explains these two main approaches and includes examples of each one. The paper concludes with a unique performance analysis and comparison of benefits and limitations of each protocol with respect to WSNs.

Performance Analysis and Evaluation of IEEE 802.11E MAC in WLANs with Hidden Stations and Multimedia Applications

2010 ◽  
pp. 161-174
Author(s):  
Mamun I. Abu-Tair
Keyword(s):  
Performance Evaluation ◽  
Loss Probability ◽  
Multimedia Applications ◽  
Mac Protocols ◽  
Heterogeneous Traffic ◽  
Ieee 802.11E ◽  
Wireless Multimedia ◽  
Medium Access ◽  
Access Delay ◽  
Medium Utilization

Recently there have been considerable interests focusing on the performance evaluation of IEEE 802.11e Medium Access Control (MAC) protocols, which were proposed for supporting differentiated quality of services in wireless local area networks (WLANs). Heterogeneous traffic generated by wireless multimedia applications and hidden stations arisen from the wireless transmission power constraints have significant impact on the performance of MAC protocols. This study performs extensive simulation experiments and conducts comprehensive performance evaluation of the IEEE 802.11e Enhanced Distributed Channel Access (EDCA) protocol in WLANs in the presence of hidden stations and heterogeneous traffic. For this purpose, non-bursty Poisson, bursty ON/OFF, and fractal-like self-similar processes with high variability are used to model and generate heterogeneous network traffic. The performance results have shown that this protocol is able to achieve differentiated throughput, access delay, packets loss probability, and medium utilization. However, the hidden stations can degrade the throughput and medium utilization as well as increase greatly the medium access delay, packets loss probability, and collision ratio under heterogeneous traffic.

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