domain identity u201d in the ie u201c start list u201d 4 gt set the 20 msb of the mac d hfn with the corresponding start value in the ie u201c start list u201d 3 gt transmit a cell update confirm message on the downlink dcch or optionally on the ccch but only if ciphering is not required and 3 gt optionally include the ie u201c rlc re establish indicator rb 2 rb 3 and rb 4 u201d and the ie u201c rlc re establish indicator rb 5 and upwards u201d to request a rlc re establishment in the ue in which case the corresponding rlc entities should also be re established in utran or 1 gt in case the procedure was triggered by reception of a ura update 3 gt transmit a ura update confirm message on the downlink ccch or dcch 2 gt include the ie u201c ura identity u201d in the ura update confirm message in a cell where multiple ura identifiers are broadcast or 1 gt initiate an rrc connection release procedure by transmitting an rrc connection release message on the downlink ccch in particular utran should 2 gt if the cell update message was sent because of an unrecoverable error in rb 2 rb 3 or rb 4 3 gt initiate an rrc connection release procedure by transmitting an rrc connection release message on the downlink ccch the utran may transmit several cell update confirm ura update confirm messages to increase the probability of proper reception of the message by the ue in such a case the rrc sn for these repeated messages should be the same with regard to the steps above it should be noted that the present invention steps enable the.