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Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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6.3-1. Multiple Access protocols (a). Consider the figure below, which shows the arrival of 6 messages for transmission at different multiple access wireless nodes at times  t = 0.3, 1.7, 1.8, 2.5, 4.2, 4.6. Each transmission requires exactly one time unit. 

6.3-1. Multiple Access protocols (a). Consider the figure below, which shows the arrival of 6 messages for transmission at different multiple access wireless nodes at times t= 0.3, 1.7, 1.8, 2.5, 4.2, 4.6. Each transmission requires exactly one time unit. 4 t=0.0 t=1.0 t=2.0 t=3.0 t=4.0 t=5.0 For the pure ALOHA protocol, indicate which packets are successfully transmitted. You can assume that if a packet experiences a collision, a node will not attempt a retransmission of that packet until sometime after t=5. [Note: You can find more examples of problems similar to this here.] O 1 O 2 O 3 O 4 O 5 O 6
Transcribed Image Text:6.3-1. Multiple Access protocols (a). Consider the figure below, which shows the arrival of 6 messages for transmission at different multiple access wireless nodes at times t= 0.3, 1.7, 1.8, 2.5, 4.2, 4.6. Each transmission requires exactly one time unit. 4 t=0.0 t=1.0 t=2.0 t=3.0 t=4.0 t=5.0 For the pure ALOHA protocol, indicate which packets are successfully transmitted. You can assume that if a packet experiences a collision, a node will not attempt a retransmission of that packet until sometime after t=5. [Note: You can find more examples of problems similar to this here.] O 1 O 2 O 3 O 4 O 5 O 6
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