 |
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|
|
|
|
|
|
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|
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| n |
The
number of collisions that can be seen by a node over a
|
|
certain
period can indicate the node mobility or medium
|
|
|
|
usage
condition more precisely than other parameters
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|
|
|
Ø |
The
faster nodes move, the larger number of collisions can be
|
|
|
observed
by nodes
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|
|
Ø |
The
larger number of collision happens, the more backoff periods
|
|
|
are
and less medium usage is detected
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|
|
| n |
Method
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|
|
|
Ø |
Nodes
measure the medium usage and number of collisions over a
|
|
|
certain
period
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|
|
|
Ø |
Based
on the number of collisions, a suitable threshold is set
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|
