A method by which resources of a cell under the supervision of a controlling radio network controller (CRNC) are reserved for providing high speed downlink packet access via a high speed downlink shared channel (HS-DSCH) having one or more corresponding physical channels (HS-PDSCHs), the method including as steps: a step (61) in which the CRNC for the Node B serving the cell sends to the Node B a message conveying cell-specific high speed downlink packet access HSDPA information indicating codes for the HS-DSCH and for an associated high speed shared control channel (HS-SCCH) and also indicating a maximum allowed value for the combined power of the HS-SCCH and the HS-PDSCHs; and a step (63) in which the Node B communicates to the CRNC a cell-specific HSDPA resource response indicating either the resources the Node B has reserved or indicating only whether or not all the resources requested by CRNC were successfully reserved.