Content for  TS 38.321  Word version:  18.0.0

The Multiple Entry PHR with assumed PUSCH MAC CE is identified by a MAC subheader with eLCID as specified in Table 6.2.1-2. It has a variable size, and includes the bitmap, a Type 2 PH field , an octet containing the associated P_CMAX,f,c field (if reported) and an octet containing the associated P_CMAX,f,c field for assumed PUSCH (if reported) for SpCell of the other MAC entity; a Type 1 PH field, an octet containing the associated P_CMAX,f,c field (if reported) and an octet containing the associated P_CMAX,f,c field for assumed PUSCH (if reported) for the PCell. It further includes, in ascending order based on the ServCellIndex, one or multiple of Type X PH fields, octets containing the associated P_CMAX,f,c fields (if reported) and octets containing the associated P_CMAX,f,c fields for assumed PUSCH (if reported) for Serving Cells other than PCell indicated in the bitmap. X is either 1 or 3 according to TS 38.213 and TS 36.213. The presence of Type 2 PH field for SpCell of the other MAC entity is configured by phr-Type2OtherCell with value true. A single octet bitmap is used for indicating the presence of PH per Serving Cell when the highest ServCellIndex of Serving Cell with configured uplink is less than 8, otherwise four octets are used. The MAC entity determines whether PH value for an activated Serving Cell is based on real transmission or a reference format by considering the configured grant(s) and downlink control information which has been received until and including the PDCCH occasion in which the first UL grant for a new transmission that can accommodate the MAC CE for PHR as a result of LCP as defined in clause 5.4.3.1 is received since a PHR has been triggered if the PHR MAC CE is reported on an uplink grant received on the PDCCH or until the first uplink symbol of PUSCH transmission minus PUSCH preparation time as defined in clause 7.7 of TS 38.213 if the PHR MAC CE is reported on a configured grant. For a band combination in which the UE does not support dynamic power sharing, the UE may omit the octets containing Power Headroom field and P_CMAX,f,c field for Serving Cells in the other MAC entity except for the PCell in the other MAC entity and the reported values of Power Headroom and P_CMAX,f,c for the PCell are up to UE implementation. The PHR MAC CEs are defined as follows:

• C_i: This field indicates the presence of a PH field for the Serving Cell with ServCellIndex i as specified in TS 38.331. The C_i field set to 1 indicates that a PH field for the Serving Cell with ServCellIndex i is reported. The C_i field set to 0 indicates that a PH field for the Serving Cell with ServCellIndex i is not reported;
• E_i: This field indicates the presence of a P_CMAX,f,c for assumed PUSCH field for the Serving Cell with ServCellIndex i as specified in TS 38.331. The E_i field set to 1 indicates that a P_CMAX,f,c for assumed PUSCH field for the Serving Cell with ServCellIndex i is reported. The E_i field set to 0 indicates that a P_CMAX,f,c for assumed PUSCH field for the Serving Cell with ServCellIndex i is not reported. For the E-UTRA Serving Cell, the corresponding E_i field is set to 0;
• R: Reserved bit, set to 0;
• V: This field indicates if the PH value is based on a real transmission or a reference format. For Type 1 PH, the V field set to 0 indicates real transmission on PUSCH and the V field set to 1 indicates that a PUSCH reference format is used. For Type 2 PH, the V field set to 0 indicates real transmission on PUCCH and the V field set to 1 indicates that a PUCCH reference format is used. For Type 3 PH, the V field set to 0 indicates real transmission on SRS and the V field set to 1 indicates that an SRS reference format is used. Furthermore, for Type 1, Type 2, and Type 3 PH, the V field set to 0 indicates the presence of the octet containing the associated P_CMAX,f,c field and the MPE field, and the V field set to 1 indicates that the octet containing the associated P_CMAX,f,c field and the MPE field is omitted;
• Power Headroom (PH): This field indicates the power headroom level. The length of the field is 6 bits. The reported PH and the corresponding power headroom levels are shown in Table 6.1.3.8-1 (the corresponding measured values in dB for the NR Serving Cell are specified in TS 38.133 while the corresponding measured values in dB for the E-UTRA Serving Cell are specified in TS 36.133);
• P: If mpe-Reporting-FR2 is configured and the Serving Cell operates on FR2, the MAC entity shall set this field to 0 if the applied P-MPR value, to meet MPE requirements, as specified in TS 38.101-2, is less than P-MPR_00 as specified in TS 38.133 and to 1 otherwise. If mpe-Reporting-FR2 is not configured or the Serving Cell operates on FR1, this field indicates whether power backoff is applied due to power management (as allowed by P-MPRc as specified in TS 38.101-1, TS 38.101-2, and TS 38.101-3). The MAC entity shall set the P field to 1 if the corresponding P_CMAX,f,c field would have had a different value if no power backoff due to power management had been applied;
• P_CMAX,f,c: If present, this field indicates the P_CMAX,f,c (as specified in TS 38.213) for the NR Serving Cell and the P_CMAX,c or P̃_CMAX,c (as specified in TS 36.213) for the E-UTRA Serving Cell used for calculation of the preceding PH field. The reported P_CMAX,f,c and the corresponding nominal UE transmit power levels are shown in Table 6.1.3.8-2 (the corresponding measured values in dBm for the NR Serving Cell are specified in TS 38.133 while the corresponding measured values in dBm for the E-UTRA Serving Cell are specified in TS 36.133);
• P_CMAX,f,c for assumed PUSCH: If present, this field indicates the P_CMAX,f,c for assumed PUSCH(as specified in TS 38.213) for the NR Serving Cell. The reported P_CMAX,f,c and the corresponding nominal UE transmit power levels are shown in [Table 6.1.3.8-2] (the corresponding measured values in dBm for the NR Serving Cell are specified in TS 38.133;
• MPE: If mpe-Reporting-FR2 is configured, and the Serving Cell operates on FR2, and if the P field is set to 1, this field indicates the applied power backoff to meet MPE requirements, as specified in TS 38.101-2. This field indicates an index to Table 6.1.3.8-3 and the corresponding measured values of P-MPR levels in dB are specified in TS 38.133. The length of the field is 2 bits. If mpe-Reporting-FR2 is not configured, or if the Serving Cell operates on FR1, or if the P field is set to 0, R bits are present instead.

The enhanced SP CSI reporting on PUCCH Activation/Deactivation MAC CE is identified by a MAC subheader with eLCID as specified in Table 6.2.1-1b. It has a variable size and consists of the following fields:

• Serving Cell ID: This field indicates the identity of the Serving Cell for which the MAC CE applies. The length of the field is 5 bits;
• BWP ID: This field indicates a UL BWP for which the MAC CE applies as the codepoint of the DCI bandwidth part indicator field as specified in TS 38.212. The length of the BWP ID field is 2 bits;
• S_i: This field indicates the activation/deactivation status of the Semi-Persistent CSI report configuration within csi-ReportConfigToAddModList, as specified in TS 38.331. S0 refers to the report configuration which includes PUCCH resources for SP CSI reporting in the indicated BWP and has the lowest CSI-ReportConfigId within the list with type set to semiPersistentOnPUCCH, S1 to the report configuration which includes PUCCH resources for SP CSI reporting in the indicated BWP and has the second lowest CSI-ReportConfigId and so on. If the number of report configurations within the list with type set to semiPersistentOnPUCCH in the indicated BWP is less than i + 1, MAC entity shall ignore the S_i field. The S_i field is set to 1 to indicate that the corresponding Semi-Persistent CSI report configuration shall be activated. The S_i field is set to 0 to indicate that the corresponding Semi-Persistent CSI report configuration i shall be deactivated;
• N_i,x: this field indicates the activation/deactivation status of the Semi-Persistent CSI report SubConfiguration x within csi-ReportSubConfigList of CSI-ReportConfigId i, as specified in TS 38.331. If S_i set to 1, the octet corresponding to N_i,0 to N_i,7 is present. If S_i set to 0, the octet corresponding to N_i,0 to N_i,7 is not present. N_0,0 refers to the report SubConfiguration which has the lowest csi-ReportSubConfigID within the list, N_0,1 to the report SubConfiguration which has the second lowest csi-ReportSubConfigID and so on. If the number of report SubConfigurations within the list with type set to csi-ReportSubConfigList in the indicated BWP is less than x + 1, the MAC entity shall ignore the N_i,x field. The N_i,x field is set to 1 to indicate that the corresponding Semi-Persistent CSI report SubConfiguration x shall be activated. The N_i,x field is set to 0 to indicate that the corresponding Semi-Persistent CSI report SubConfiguration x shall be deactivated;
• R: Reserved bit, set to 0.