Sea1971
2002-01-16, 08:41 PM
第二題
512 byte frame (4096 bits) takes 4096/64000 sec -- 64 msec
Roundtrip propagaton is 540 msec. This plus the time for one frame
to be read.(i.e. 64 msec) to give 540+64=604 msec
We need a window of 604/64 that is 10 frames to fully use the channel.
with window size 1, we can send 4096 bits/ 604 msec giving thruput of 6781 bps.
For window size 7, it is 47.47 kbps.
For window size 10 or more, the full 64kbps is used.
贊助商連結
512 byte frame (4096 bits) takes 4096/64000 sec -- 64 msec
Roundtrip propagaton is 540 msec. This plus the time for one frame
to be read.(i.e. 64 msec) to give 540+64=604 msec
We need a window of 604/64 that is 10 frames to fully use the channel.
with window size 1, we can send 4096 bits/ 604 msec giving thruput of 6781 bps.
For window size 7, it is 47.47 kbps.
For window size 10 or more, the full 64kbps is used.
贊助商連結