, manages connection ele- ment set up and release in the radio access sub-network. It participates in the processing of the end-to-end connection set up and release, as well as the managing and mainte- nance of the end-to-end connection, which is located in the radio access sub network. 3.4.5.6 Radio Protocols Function This function provides user data and signalling transfer capability across the UMTS radio interface by adapting the services (according to the QoS of the radio access bearer) to the radio transmission. This function includes: multiplexing of services and multiplexing of UEs on radio bearers; segmentation and reassembly; acknowledged/unacknowledged delivery according to the radio access bearer QoS. 3.4.5.7 RF Power Control Power control manages the transmitted power level in order to minimize interference and keep connection quality. Table 3.2 illustrates the different functions. Table 3.2 RF Power Control Functions Power control Function description Outer loop Located in the SRNC sets the target quality value for the UL inner loop power control, which is located in Node B for FDD and is located in the UE for TDD. It receives input from quality estimates of the transport chan- nel. The UL outer loop power control is mainly used for long- term quality control of the radio channel. In FDD, if the connection involves both a SRNS and a DRNS the function UL outer loop power control (located in the SRNC) sets the target quality for the UL inner loop power control function (located in Node B). Sets the target quality value for the DL inner loop power con- trol. It receives input from quality estimates of the transport channel measured in the UE. It is used for a long-term quality control of the radio channel. Located mainly in the UE with some control parameters are set by the UTRAN, where the SRNC under an algorithms control sends the target down link power range based on the measure- ment report from UE. The UMTS Network and Radio Access Technology Inner Loop Sets the power of the uplink dedicated physic