Patent ID: 8554153

Claim:
A method for generating a transmit power level for a communication apparatus for operation in a wireless communication network having a network node, comprising: transmitting to said network node a first request message, for requesting access to a communication channel, using a first transmit power level by said communication apparatus; the communication apparatus determining based on access information derived from received data whether an access collision occurred at said network node as a consequence of said first request message; and the communication apparatus generating, based on said determination, a second transmit power level to be used for transmitting a second request message, wherein the step of generating comprises setting the value of the second transmit power level equal to the value of the first transmit power level if it is determined from said access information that an access collision occurred at said network node, wherein the step of determining comprises using the access information to determine whether an access condition has been altered, and inferring from an access condition being altered that an access collision occurred at the network node as a consequence of said first request message.