scholarly journals Connectivity-Based Reliable Multicast MAC Protocol for IEEE 802.11 Wireless LANs

2009 ◽  
Vol 2009 (1) ◽  
Author(s):  
Woo-Yong Choi
Keyword(s):  
Ieee 802.11 ◽  
Mac Protocol ◽  
Wireless Lans ◽  
Reliable Multicast ◽  
802.11 Wireless Lans

scholarly journals Fair MAC protocol for IEEE 802.11 wireless LANs with hidden node problem

2020 ◽  
Vol 71 (5) ◽  
pp. 365-367
Author(s):  
Woo-Yong Choi
Keyword(s):  
Ieee 802.11 ◽  
Mac Protocol ◽  
Wireless Lans ◽  
Sensing Range ◽  
Backoff Algorithm ◽  
Hidden Node ◽  
Carrier Sensing ◽  
802.11 Wireless Lans ◽  
Node Problem ◽  
Hidden Nodes

Abstract In IEEE 80211 wireless LANs, hidden nodes can disrupt the backoff algorithm of other nodes that are located outside the physical carrier sensing range of hidden nodes. The fairness problem between the nodes that are vulnerable and not vulnerable to the hidden node problem is dealt with in this paper. We propose an efficient fair MAC protocol to resolve the fairness problem.

scholarly journals Hybrid MAC protocol for IEEE 802.11 wireless LANs with hidden node problem

2018 ◽  
Vol 69 (4) ◽  
pp. 323-325
Author(s):  
Woo-Yong Choi
Keyword(s):  
Ieee 802.11 ◽  
Mac Protocol ◽  
Wireless Lans ◽  
Distributed Coordination ◽  
Medium Access Control Protocols ◽  
Medium Access ◽  
Hidden Node ◽  
802.11 Wireless Lans ◽  
Coordination Function ◽  
Node Problem

Abstract Combining the IEEE 802.11 basic MAC (medium access control) protocols, which are the DCF (distributed coordination function) and the PCF (point coordination function), we propose a hybrid MAC protocol to improve the performance of IEEE 802.11 wireless LANs and mitigate the hidden node problem.

scholarly journals Efficient MAC protocol for IEEE 802.11 wireless LANs with obstructing objects

2019 ◽  
Vol 70 (6) ◽  
pp. 486-488
Author(s):  
Woo-Yong Choi
Keyword(s):  
Ieee 802.11 ◽  
Moving Objects ◽  
Mac Protocol ◽  
Wireless Lans ◽  
Experimental Studies ◽  
Service Area ◽  
802.11 Wireless Lans

Abstract Previous experimental studies show that the performance of IEEE 802.11 wireless LANs can be significantly degraded when obstructing moving objects and humans are present in the service area of wireless LANs. We propose the efficient MAC protocol based on the multipolling method to mitigate the interference from obstructing objects.

scholarly journals Energy-efficient MAC protocol for wireless LANs with WiFi sensors

2021 ◽  
Vol 72 (5) ◽  
pp. 352-355
Author(s):  
Woo-Yong Choi
Keyword(s):  
Ieee 802.11 ◽  
Energy Efficient ◽  
Mac Protocol ◽  
Wireless Lans ◽  
Medium Access Control Protocol ◽  
Medium Access ◽  
Efficient Manner ◽  
Battery Power ◽  
802.11 Wireless Lans ◽  
Near Future

Abstract More and more mobile computing devices such as smartphones with limited battery power are being used in IEEE 802.11 wireless LANs, and WiFi sensors with very limited battery power are expected to get Internet access through wireless LANs in the near future. We propose an efficient MAC (Medium Access Control) protocol so that WiFi sensors and mobile devices are connected to APs (Access Points) in IEEE 802.11 wireless LANs in an energy-efficient manner.

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