which the request for adding the new data flow has been admitted and the transmission parameters such as for example the data rates the transport formats and spreading codes are allocated the transmission parameters are then signalled preferably together with a specific cpch identification to the mobile user equipment that has requested the data flow on the cpch if however equation 13 is not met as a result of the checking step 3 a then in case of adding the new request the delay limits will be violated and hence the request can not be admitted as a consequence it proceeds with step 5 a of fig1 trying to perform a reduction of the offered random access channel load for enabling the system to limit the actual delay preferably including at least one of the two following actions firstly one approach for reducing the offered random access channel load is to simply reject the new request this may be the preferred controlling functionality in the general case where all ongoing traffic should get priority over a new request secondly another possibility according to the invention is to remove one or more ongoing data flows from the cpch in order to insert the new one this may be the preferred option for handling calls with priority such as for example emergency calls where resources shall be pre empted in order to proceed with the priority call with reference to fig2 the principle of the inventive random access packet transmission approach of employing congestion control functionality is schematically depicted a preferred control functionality based on the exemplar cpch.