itionBurst t300, t301, T310,n310 ssb-PeriodicityServingCell ue-TimersAndConstants t311, n311, t319 tdd-UL-DL-ConfigurationCommon TDD-UL-DL-Pattern uac-BarringInfoSetList Ss-PBCH-BlockPower UAC-BarringInfo SubcarrierSpacing uac-AccessCategory1-SelectionAssistanceInfo Figure 7.5. SIB1 data structure. For a color version of this figure, see www.iste.co.uk/launay/5g.zip Unified Access Control (UAC) is a set of mechanisms that determine whether to allow or deny a mobile to camp on the cell depending on the service requested and the load of the cell. The information in the ServingCell_ConfigCommon data block is used to configure the initial BWP of the cell. For the uplink, the configuration is defined in the BWP-UplinkCommon data block. For the downlink, the configuration is defined in the BWP-Downlink data block. The BWP-Downlink data block refers to two other data structures: - the BWP-DownlinkCommon data block used to configure the common parameters of the cell applicable to all terminals; - the BWP-DownlinkDedicated data block used to configure the parameters specific to a mobile. 5G-NR Radio Interface - Bandwidth Part The RMSI allows the mobile to be located on the initial BWP and be configured to receive CORESET#0 by broadcasting MIB and SIB1. 7.2.2. CORESET configuration The configuration of a new CORESET and the control space are contained in the PDCCH-Config IE (Information Element). The new CORESET is specific to the mobile. The network configures up to three CORESETs (CORESET#0 included) per BWP and per cell. For 5G-SA, the configuration of a new CORESET is transmitted in the RRC Reconfiguration message during the connection establishment procedure. Information The data structure where parameters are contained spCellConfigCommon.frequencyInfoDL DL BWP spCellConfigCommon.InitialDownlinkBWP UL BWP spCellConfigCommon.frequencyInfoUL spCellConfigCommon.InitialUplinkBWP PRACH spCellConfigCommon.uplinkConfigCommon.initialUplinkBWP.rach- configuration ConfigCommon PDCCH spCellConfigCommon.initialDownlinkBWP.pdcch-C