Communicating protocol data unit in a radio access network

The radio access network in the network communication in use a novel protocol data unit. When user device requests for radio resource is connected with the controller when ue in the request information comprising identifier of. Is connected to the establishment of ue when it is connected with the serve wireless network controller the logical channel distribution to the ue can be used for communication and the protocol data unit header identified in logical channel it is convenient for the out-of-band signaling in the manner of allowing pdu of the receiver know information identifying the pdu dependent on transmitter the state of. When the sending machine to change the condition of the receiving device can correspondingly changes state. New pdu structure allowing hs-dsch downlink channel and a pch cell-fach or cell or ura pch the cell-dch state of the transition period and that is opposite to the state transition period of continuous receiving. Pdu a new structure and it allows continuous hsdsch retransmission.