8.5.84 Actions related to DCH_ENHANCEMENTS_STATUS variable (FDD only)

25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

If the UE receives an ACTIVE SET UPDATE, CELL UPDATE CONFIRM, or any reconfiguration message, the UE shall:

1> take actions related to the IE "DCH Enhancements info FDD" as specified in subclause 8.6.6.64;

1> determine the value of the DCH_ENHANCEMENTS_STATUS variable.

The DCH_ENHANCEMENTS_STATUS variable shall be set to TRUE only when all the following conditions are met:

1> the UE is in CELL_DCH state;

1> the UE supports DCH Enhancements;

1> the UE has stored IE "DCH Enhancements info FDD".

If any of the above conditions is not met and the DCH_ENHANCEMENTS_STATUS variable is set to TRUE, the UE shall:

1> set the DCH_ENHANCEMENTS_STATUS variable to FALSE;

1> trigger the lower layers to stop operation with DCH Enhancements.

Whenever the variable DCH_ENHANCEMENTS_STATUS is set to TRUE, the UE shall:

1> if the UE indicates basic support for DCH Enhancements and choice "DL FET Mode" is set to Full; or

1> if the IE "Power offset P_TPC-DPDCH" is not included for any one or more of the radio links in the active set; or

1> if the IE "Power offset PO_SRB" is not included for any one or more of the radio links in the active set; or

1> if the IE "Number of bits for Pilot bits" is not set to 0; or

1> if the variables HS_DSCH RECEPTION or E_DCH_TRANSMISSION are set to TRUE, the variable DTX_DRX_STATUS is set to FALSE, and DL FET Basic mode is indicated in the IE "DL FET Mode"; or

1> if the variables HS_DSCH RECEPTION or E_DCH_TRANSMISSION are set to TRUE, the variable DTX_DRX_STATUS is set to FALSE, and DL FET Full mode is indicated in the IE "DL FET Mode" with choice "UL Transmission Mode" not set to 20ms; or

1> if "UL Transmission Mode" is configured as "10ms only" and the IE "Power offset Information 10ms Mode" is not included for each CTFC in the received message; or

1> if "UL Transmission Mode" is configured as "10ms only" and the "Power offset Information 10ms Mode" configuration is not available for each CTFC in the current TFCS; or

1> if "UL Transmission Mode" is configured as "10ms or 20ms" and the IE "Power offset Information 10ms Mode" is not available for at least one CTFC in the received message; or

1> if "UL Transmission Mode" is configured as "10ms or 20ms" and the IE "Power offset Information 10ms Mode" configuration is not available for at least one CTFC in the current TFCS:

2> set the variable INVALID_CONFIGURATION to TRUE.

1> else:

2> trigger the lower layers to operate with DCH Enhancements in DL FET Basic mode or DL FET Full mode as indicated in the IE "DL FET Mode".

Whenever the variable DCH_ENHANCEMENTS_STATUS is set to FALSE, the UE shall:

1> if the IE "Number of bits for Pilot bits" is set to 0:

2> if the UE is in CELL_DCH state:

3> set the variable INVALID_CONFIGURATION to TRUE.