scholarly journals Forwarding Media Access Control (MAC) Frames over Multiple Access Protocol over Synchronous Optical Network/Synchronous Digital Hierarchy (MAPOS)

2002 ◽  
Author(s):  
O. Okamoto ◽  
M. Maruyama ◽  
T. Sajima
Keyword(s):  
Access Control ◽  
Multiple Access ◽  
Optical Network ◽  
Media Access Control ◽  
Media Access ◽  
Synchronous Digital Hierarchy ◽  
Access Protocol ◽  
Multiple Access Protocol

PERFORMANCE EVALUATION OF ADAPTIVE MEDIA ACCESS CONTROL PROTOCOLS FOR PERVASIVE WIRELESS NETWORKS

2002 ◽  
Vol 03 (03n04) ◽  
pp. 253-272 ◽  
Author(s):  
ALVIN LIM ◽  
KUI MOK
Keyword(s):  
Wireless Networks ◽  
Access Control ◽  
Multiple Access ◽  
Error Rates ◽  
High Density ◽  
Media Access Control ◽  
Slotted Aloha ◽  
Media Access ◽  
Control Protocols ◽  
Code Division Multiple

As pervasive and high-density wireless networks become increasingly common, it is critical to address the problems of intermittent disconnection, high error rate and collision that cause degradation in the performance of wireless media access control protocols, such as slotted ALOHA Time Division Multiple Access (slotted ALOHA/TDMA) and Direct Sequence Code Division Multiple Access (DS/CDMA). We propose adaptive techniques for improving performance of media access protocols through awareness of the mobile communication environment. These techniques involve detection of intermittent disconnection, high error rates, and collisions. Upon detection and notification of these conditions by snooping devices, the media access control layer adapts its operation and synchronization accordingly to reduce delay and loss of bandwidth. Results from our simulation studies show that adaptive TDMA improves performance by as much as 12 times over basic TDMA and adaptive CDMA improves by as much as 4 times over basic CDMA in wireless network with high density cells. Overall, adaptive CDMA still performs better than adaptive TDMA by about 4 times.

IEEE 802.11 Tutorial

2018 ◽  
Author(s):  
Kiramat
Keyword(s):  
Access Control ◽  
Ieee 802.11 ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Physical Layer ◽  
Media Access Control ◽  
Area Network ◽  
Media Access ◽  
Computer Communications

IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communications. Maintained by the Institute of Electrical and Electronics Engineers (IEEE) LAN/MAN Standards Committee (IEEE 802). This document highlights the main features of IEEE 802.11n variant such as MIMO, frame aggregation and beamforming along with the problems in this variant and their solutions

Media Access Control Protocol with Differential Service in Aeronautical Frequency-Hopping Ad Hoc Networks

2014 ◽  
Vol 24 (8) ◽  
pp. 2214-2225 ◽  
Author(s):  
Ye-Qun WANG ◽  
Feng YANG ◽  
Guo-Ce HUANG ◽  
Heng-Yang ZHANG ◽  
Jian-Xin GUO
Keyword(s):  
Access Control ◽  
Ad Hoc Networks ◽  
Ad Hoc ◽  
Frequency Hopping ◽  
Media Access Control ◽  
Media Access ◽  
Control Protocol ◽  
Hoc Networks ◽  
Media Access Control Protocol
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