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 Application of Bat Algorithm for The Detection of Hidden Nodes in IEEE802.11ah Networks

2019 ◽  
Vol 18 (1) ◽  
pp. 11-15 ◽  
Author(s):  
Kofoworola Fapohunda ◽  
Eberechukwu Numan Paulson ◽  
Zubair Suleiman ◽  
Oladimeji Saliu ◽  
David Michael ◽  
...  
Keyword(s):  
Ieee 802.11 ◽  
Power Saving ◽  
Bat Algorithm ◽  
Ieee 802.11A ◽  
Hidden Node ◽  
Power Saving Mode ◽  
Saving Mode ◽  
Node Problem ◽  
Mode A ◽  
Hidden Nodes

Hidden node problem sometimes referred to as frequent packets collision that mostly leads to loss of packets is no longer new in wireless networks because it affects the previous IEEE802.11 standards. The new IEEE802.11ah standard which is also a sub-standard of IEEE 802.11 is no exemption. As a matter of fact, IEEE802.11ah suffers from a hidden node problem more than networks (IEEE 802.11a/b/n/ac) due to their wider coverage which is up to 1km, high number of devices they can support (over 8000 nodes to one AP) and frequent simultaneous sleeping and sending of the nodes (power saving mode). A few researchers have worked on this hidden node problem in IEEE802.11ah but could not get a lasting solution to it. Therefore, this paper proposes an algorithm which detects hidden nodes and also proposes a theoretical solution based on previous works which was also experimentally verified through the BIHD-CM.

Hybrid Hidden Node Detection Method for IEEE 802.11 Wireless LANs

Frequenz ◽  
2010 ◽  
Vol 64 (3-4) ◽  
Author(s):  
Woo-Yong Choi
Keyword(s):  
Ieee 802.11 ◽  
Detection Method ◽  
Wireless Lans ◽  
Hidden Node ◽  
802.11 Wireless Lans

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.

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