Medium Access Control Protocols, Local Area Networks, and Wireless Local Area Networks. Lecture Note 10. Medium Access Control Protocols and Local Area Networks. Part I: Medium Access Control Part II: Local Area Networks Part III: Wireless Local Area Networks.
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Lecture Note 10
Part I: Medium Access Control
Part II: Local Area Networks
Part III: Wireless Local Area Networks
Medium Access Control Protocol: Slotted ALOHA: Throughput/Delay Performance Modeling and Analysis
Backoff period B
Only frames that arrive during prior X seconds
0.368 Wireless Local Area Networks
GThroughput of Slotted ALOHA
. . .
. . .
Station A begins transmission at Wireless Local Area Networks t = 0
Station A captures
channel at t = tprop
ACarrier Sensing Multiple Access (CSMA)
S Wireless Local Area Networks
a = 0.01
a = 11-Persistent CSMA Throughput
a = 0.01
a = 0.1
a = 1
A begins to Wireless Local Area Networks
t = 0
B begins to
t = tprop- ;
t = tprop
t= 2 tprop-
BCSMA/CD reaction time
It takes 2 tpropto find out if channel has been captured