cution related to RRC connection mobility during an established RRC connection, e.g. handover, inter-system handover preparation, cell re-selection and cell/paging area update procedures, based on e.g. measurements done by the UE. The UMTS Network and Radio Access Technology Paging/notification. May broadcast paging information from the network to se- lected Ues, upon request from higher layers on the network side when necessary, or can also initiate paging during an established RRC connection. Routing of higher layer PDUs. Performs at the UE side routing of higher layer PDUs to the correct higher layer entity, at the UTRAN side to the correct RANAP entity. Control of requested QoS. It ensures that the QoS requested for the radio bearers can be met, e.g. allocation of a sufficient number of radio resources. UE measurement reporting and control of the reporting. The RRC layer controls the measurements performed by the UE in terms of what to measure, when to measure and how to report, including both UMTS air interface and other systems. It also performs the reporting of the measurements from the UE to the network. Outer loop power control. The RRC layer controls setting of the target of the closed loop power control. Control of ciphering. Provides procedures for setting of ciphering (on/off) between the UE and UTRAN. Slow DCA. It applies only to the TDD mode and involves allocating preferred radio resources dynamically based on long-term decision criteria. Arbitration of radio resources on uplink DCH. Controls rapid radio resource allocations on uplink DCH using a broadcast channel to send control information to all involved users. Initial cell selection and re-selection in idle mode. Selection of the appropriate cell based on idle mode measurements and cell selection criteria. Integrity protection. Adds a Message Authentication Code (MAC-I) to sensitive and/or containing sensitive information RRC messages. Initial configuration for CBS. Performs the initial configuration of the BMC sub- layer. Allocation of radio 