Section: 5.3.3.7 T300 expiry
Content: The UE shall: 1> if timer T300 expires: 2> reset MAC, release the MAC configuration and re-establish RLC for all RBs that are established (except broadcast MRBs); 2> if the UE supports RRC Connection Establishment failure with temporary offset and the T300 has expired a consecutive connEstFailCount times on the same cell for which connEstFailureControl is included in SIB1: 3> for a period as indicated by connEstFailOffsetValidity: 4> use connEstFailOffset for the parameter Qoffsettemp for the concerned cell when performing cell selection and reselection according to TS 38.304[ NR; User Equipment (UE) procedures in Idle mode and in RRC Inactive state ]  [20] and TS 36.304[ Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode ]  [27]; NOTE 1: When performing cell selection, if no suitable or acceptable cell can be found, it is up to UE implementation whether to stop using connEstFailOffset for the parameter Qoffsettemp during connEstFailOffsetValidity for the concerned cell. 2> if the UE supports multiple CEF report: 3> if the UE is not registered in SNPN and if the UE has connection establishment failure information or connection resume failure information available in VarConnEstFailReport and if the RPLMN is equal to plmn-identity in network-Identity stored in VarConnEstFailReport; or 3> if the UE is registered in SNPN and if the UE has connection establishment failure information or connection resume failure information available in VarConnEstFailReport and if the registered SNPN identity is not equal to snpn-identity in network-Identity stored in any entry of VarConnEstFailReportList: 4> if the cell identity of current cell is not equal to the cell identity stored in measResultFailedCell in VarConnEstFailReport and if the maxCEFReport-r17 has not been reached: 5> append the VarConnEstFailReport as a new entry in the VarConnEstFailReportList; 2> if the UE has connection establishment failure information or connection resume failure information available in VarConnEstFailReport and if the RPLMN is not equal to plmn-identity in network-Identity stored in VarConnEstFailReport; or 2> if the UE is registered in SNPN and if the UE has connection establishment failure information or connection resume failure information available in VarConnEstFailReport and if the registered SNPN identity is not equal to snpn-identity in network-Identity stored in any entry of VarConnEstFailReportList: 2> if the cell identity of current cell is not equal to the cell identity stored in measResultFailedCell in VarConnEstFailReport: 3> reset the numberOfConnFail to 0; 2> if the UE supports multiple CEF report and if the UE has connection establishment failure information or connection resume failure information available in VarConnEstFailReportList and if the RPLMN is not equal to plmn-identity in network-Identity stored in any entry of VarConnEstFailReportList;or 2> if the UE supports multiple CEF report and if the UE has connection establishment failure information or connection resume failure information available in VarConnEstFailReportList and if the registered SNPN identity is not equal to snpn-identity in network-Identity stored in any entry of VarConnEstFailReportList: 3> clear the content included in VarConnEstFailReportList; 2> clear the content included in VarConnEstFailReport except for the numberOfConnFail, if any; 2> store the following connection establishment failure information in the VarConnEstFailReport by setting its fields as follows: 3> if the UE is not in SNPN access mode: 4> set the plmn-Identity in network-Identity to the PLMN selected by upper layers (see TS 24.501[ Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3 ]  [23]) from the PLMN(s) included in the plmn-IdentityInfoList in SIB1; 3> else if the UE is in SNPN access mode: 4> set the snpn-Identity in network-Identity to include the SNPN identity selected by upper layers (see TS 24.501[ Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3 ]  [23]) from the list of SNPN(s) included in the npn-IdentityInfoList in SIB1; 3> set the measResultFailedCell to include the global cell identity, tracking area code, the cell level and SS/PBCH block level RSRP, and RSRQ, and SS/PBCH block indexes, of the failed cell based on the available SSB measurements collected up to the moment the UE detected connection establishment failure; 3> if available, set the measResultNeighCells, in order of decreasing ranking-criterion as used for cell re-selection, to include neighbouring cell measurements for at most the following number of neighbouring cells: 6 intra-frequency and 3 inter-frequency neighbours per frequency as well as 3 inter-RAT neighbours, per frequency/ set of frequencies per RAT and according to the following: 4> for each neighbour cell included, include the optional fields that are available; NOTE 2: The UE includes the latest results of the available measurements as used for cell reselection evaluation, which are performed in accordance with the performance requirements as specified in TS 38.133[ NR; Requirements for support of radio resource management ]  [14]. 3> if available, set the locationInfo as follows: 4> if available, set the commonLocationInfo to include the detailed location information; 4> if available, set the bt-LocationInfo to include the Bluetooth measurement results, in order of decreasing RSSI for Bluetooth beacons; 4> if available, set the wlan-LocationInfo to include the WLAN measurement results, in order of decreasing RSSI for WLAN APs; 4> if available, set the sensor-LocationInfo to include the sensor measurement results as follows; 5> if available, include the sensor-MeasurementInformation; 5> if available, include the sensor-MotionInformation; NOTE 3: Which location information related configuration is used by the UE to make the locationInfo available for inclusion in the VarConnEstFailReport is left to UE implementation. 3> set perRAInfoList to indicate the performed random access procedure related information as specified in 5.7.10.5; 3> if the numberOfConnFail is smaller than 8: 4> increment the numberOfConnFail by 1; 2> inform upper layers about the failure to establish the RRC connection, upon which the procedure ends; The UE may discard the connection establishment failure or connection resume failure information, i.e. release the UE variable VarConnEstFailReport and the UE variable VarConnEstFailReportList, 48 hours after the last connection establishment failure is detected. The L2 U2N Relay UE either indicates to upper layers (to trigger PC5 unicast link release) or sends NotificationMessageSidelink message to the connected L2 U2N Remote UE(s) in accordance with 5.8.9.10.