scholarly journals An Analytical Model for Prioritized Contention Access in ECMA-368 MAC Protocol

2008 ◽  
Author(s):  
N. Arianpoo ◽  
Y. Lin ◽  
V. W. S. Wong ◽  
A. S. Alfa
Keyword(s):  
Analytical Model ◽  
Mac Protocol

Analytical model of the LPL with wake up after transmissions MAC protocol for WSNs

2009 ◽  
Author(s):  
Cristina Cano ◽  
Boris Bellalta ◽  
Jaume Barcelo ◽  
Miquel Oliver ◽  
Anna Sfairopoulou
Keyword(s):  
Analytical Model ◽  
Mac Protocol

A Novel Analytical Model for Asynchronous Multi-Packet Reception MAC Protocol

2017 ◽  
Vol 21 (6) ◽  
pp. 1289-1292 ◽  
Author(s):  
Chen Chen ◽  
Shujuan Hou ◽  
Siliang Wu
Keyword(s):  
Analytical Model ◽  
Mac Protocol

scholarly journals Protocol Enhancements And Performance Analysis Of WiFi Networks

2021 ◽  
Author(s):  
M. Zulfiker Ali ◽  
Jelena Misic
Keyword(s):  
Analytical Model ◽  
Performance Metrics ◽  
Mac Protocol ◽  
Multiple Input Multiple Output ◽  
Access Point ◽  
Collision Probability ◽  
Queuing Model ◽  
Wifi Networks ◽  
Extensive Simulation ◽  
Performance Improvements

The 802.11ac version of the popular IEEE 802.11 protocol aims to boost performance by increasing the channel bandwidth and allowing simultaneous transmission to multiple clients in the downlink direction. This dissertation presents an innovative approach of performance evaluation of downlink multi-user multiple input multiple output (DL-MUMIMO) technique for differentiated quality of service (QoS) based traffic categories in IEEE 802.11ac protocol. We propose a novel analytical model based on discrete Markov chain (DMC) and E-limited M/G/1 queuing model to evaluate the performance improvements of multi-user transmission opportunity (MU-TXOP) sharing in DL-MU-MIMO under non-saturated load and non-ideal channel condition. We also evaluate MU-TXOP sharing probabilities among different QoS nodes to assess the performance improvement of different traffic categories. In this dissertation, we propose an Access Point controlled MAC protocol (A-MAC) that enables simultaneous transmissions from multiple stations (STA) in uplink to eliminate under utilization of network resources in uplink transmission due to single user communication. The protocol uses enhanced distributed channel access (EDCA) technique to initiate multi-user transmission and orthogonal frequency division multiple access (OFDMA) method to transmit multiple Ready-To-Send (RTS) messages simultaneously. The proposed protocol also introduces explicit channel sounding technique by using dedicated OFDM subcarrier blocks for each user. We evaluate the performance of the proposed protocol using a noble analytical model and validate the performance metrics by extensive simulation in different traffic conditions. In this dissertation we also propose the increase of carrier sensing threshold (CSTH) of nodes during association with access point (AP) to mitigate collision probability due to hidden nodes during uplink transmission and validate our proposal through extensive simulation. Finally, we propose a noble analytical model to evaluate the performance of restricted access window (RAW) mechanism of IEEE 802.11ah as the MAC layer protocol for internet of things (IoT) network. We evaluate detailed performance metrics of non-QoS IoT network and investigate the feasibility of using RAW mechanism to support differentiated QoS based heterogeneous IoT network

scholarly journals Protocol Enhancements And Performance Analysis Of WiFi Networks

2021 ◽  
Author(s):  
M. Zulfiker Ali ◽  
Jelena Misic
Keyword(s):  
Analytical Model ◽  
Performance Metrics ◽  
Mac Protocol ◽  
Multiple Input Multiple Output ◽  
Access Point ◽  
Collision Probability ◽  
Queuing Model ◽  
Wifi Networks ◽  
Extensive Simulation ◽  
Performance Improvements

The 802.11ac version of the popular IEEE 802.11 protocol aims to boost performance by increasing the channel bandwidth and allowing simultaneous transmission to multiple clients in the downlink direction. This dissertation presents an innovative approach of performance evaluation of downlink multi-user multiple input multiple output (DL-MUMIMO) technique for differentiated quality of service (QoS) based traffic categories in IEEE 802.11ac protocol. We propose a novel analytical model based on discrete Markov chain (DMC) and E-limited M/G/1 queuing model to evaluate the performance improvements of multi-user transmission opportunity (MU-TXOP) sharing in DL-MU-MIMO under non-saturated load and non-ideal channel condition. We also evaluate MU-TXOP sharing probabilities among different QoS nodes to assess the performance improvement of different traffic categories. In this dissertation, we propose an Access Point controlled MAC protocol (A-MAC) that enables simultaneous transmissions from multiple stations (STA) in uplink to eliminate under utilization of network resources in uplink transmission due to single user communication. The protocol uses enhanced distributed channel access (EDCA) technique to initiate multi-user transmission and orthogonal frequency division multiple access (OFDMA) method to transmit multiple Ready-To-Send (RTS) messages simultaneously. The proposed protocol also introduces explicit channel sounding technique by using dedicated OFDM subcarrier blocks for each user. We evaluate the performance of the proposed protocol using a noble analytical model and validate the performance metrics by extensive simulation in different traffic conditions. In this dissertation we also propose the increase of carrier sensing threshold (CSTH) of nodes during association with access point (AP) to mitigate collision probability due to hidden nodes during uplink transmission and validate our proposal through extensive simulation. Finally, we propose a noble analytical model to evaluate the performance of restricted access window (RAW) mechanism of IEEE 802.11ah as the MAC layer protocol for internet of things (IoT) network. We evaluate detailed performance metrics of non-QoS IoT network and investigate the feasibility of using RAW mechanism to support differentiated QoS based heterogeneous IoT network

scholarly journals An Analytical Model for Power Control T-MAC Protocol

2010 ◽  
Vol 12 (1) ◽  
pp. 13-18 ◽  
Author(s):  
V Ramchand ◽  
D.K. Lobiyal
Keyword(s):  
Power Control ◽  
Analytical Model ◽  
Mac Protocol
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