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Unformatted text preview: Problem 11 The arriving packet must first wait for the link to transmit 3,500 bytes or 28,000 bits. Since these bits are transmitted at 1 Mbps, the queuing delay is 28 msec. Generally, the queuing delay is [nL + (L - x)]/R . Problem 14 a) The transmission delay is R L / . The total delay is I R L R L I R IL 1 / ) 1 ( b) Let R L x / . Total delay = ax x 1 Problem 15 a) There are Q nodes (the source host and the 1 N routers). Let q proc d denote the processing delay at the q th node. Let q R be the transmission rate of the q th link and let q q trans R L d / . Let q prop d be the propagation delay across the q th link. Then Q q q prop q trans q proc end to end d d d d 1 . b) Let q queue d denote the average queueing delay at node q . Then Q q q queue q prop q trans q proc end to end d d d d d 1 ....
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This note was uploaded on 06/15/2009 for the course ECE 3076 taught by Professor Copeland during the Spring '08 term at Georgia Institute of Technology.
- Spring '08