Method and arrangement for detecting a collision in a...

Details Method and arrangement for detecting a collision in a... Method and arrangement for detecting a collision in a...

2004-06-15

2008-10-07

Louis-Jacques, Jacques (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S758000

Reexamination Certificate

active

07434143

ABSTRACT:
A method and an arrangement for detecting a collision in a communication network, such as a WLAN, on which data are sent in frames of variable lengths separated by inter-frame spaces, each frame including a header and a data payload field where the header includes information of the length of the frame, is provided. The method comprises the steps of estimating a noise level (41; 41-42) of a frame, the header of which being read by a receiver, preferably using constellation error measurement, comparing the estimated noise level with a reference noise level value, and detecting a collision with another weaker frame depending on the outcome of the comparison.

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