8.5.47 Actions related to READY_FOR_COMMON_EDCH variable (FDD and 1.28 Mcps TDD only)
25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS
The variable READY_FOR_COMMON_EDCH shall be set to TRUE only when all the following conditions are met:
1> if the UE is in CELL_FACH state or in Idle mode:
2> the UE supports E-DCH transmission in CELL_FACH state and Idle mode;
2> the IE "HS-DSCH common system information" is included in system information block type 5 or 5bis;
2> the IE "Common E-DCH system info" is included system information block type 5 or 5bis.
1> if the UE is in CELL_PCH state:
2> the UE supports E-DCH transmission in CELL_FACH state and Idle mode;
2> the UE supports HS-DSCH reception in CELL_PCH and URA_PCH state;
2> the IE "HS-DSCH paging system information" is included in system information block type 5 or 5bis;
2> the IE "Common E-DCH system info" is included system information block type 5 or 5bis;
2> variable H_RNTI is set;
2> variable E_RNTI is set;
2> variable C_RNTI is set.
If any of the above conditions is not met and the variable READY_FOR_COMMON_EDCH is set to TRUE, the UE shall:
1> set the variable READY_FOR_COMMON_EDCH to FALSE;
1> if in CELL_FACH, CELL_PCH, URA_PCH state or in Idle mode:
2> if the variable HSPA_RNTI_STORED_PCH is set to FALSE:
3> clear variable E_RNTI.
2> reset the MAC-is/i entity [15];
2> if in connected mode and System Information Block type 6 is indicated in System Information Block type 5 or 5bis as used in the cell:
3> replace the TFS of the RACH with the one stored in the UE if any;
3> let the physical channel(s) of type PRACH given by the IE(s) "PRACH info" be the default in uplink if UE is in CELL_FACH state. If the IE "PRACH info" is not included in System Information Block type 6, the UE shall read the corresponding IE(s) in System Information Block type 5 or System Information Block type 5bis and use that information to configure the PRACH;
3> start to receive the physical channel of type AICH using the parameters given by the IE "AICH info" when associated PRACH is used. If the IE "AICH info" is not included in System Information Block type 6, the UE shall read the corresponding IE in System Information Block type 5 or System Information Block type 5bis and use that information (FDD only);
3> if the IE "Additional Dynamic Transport Format Information for CCCH" is included for the selected RACH:
4> use this transport format for transmission of the CCCH (FDD only).
3> else:
4> use the first instance of the list of transport formats as in the IE "RACH TFS" for the used RACH received in the IE "PRACH system information list" when using the CCCH (FDD only).
2> else:
3> replace the TFS of the RACH with the one stored in the UE if any;
3> let the physical channel(s) of type PRACH given by the IE(s) "PRACH info" in System Information Block type 5 or 5bis be the default in uplink for the PRACH if UE is in CELL_FACH state;
3> start to receive the physical channel of type AICH using the parameters given by the IE "AICH info" in System Information Block type 5 or 5bis when given allocated PRACH is used;
3> if the IE "Additional Dynamic Transport Format Information for CCCH" is included in System Information Block type 5 or 5bis for the selected PRACH:
4> use this transport format for transmission of the CCCH.
3> else:
4> use the first instance of the list of transport formats as in the IE "RACH TFS" in System Information Block type 5 or 5bis for the used RACH received in the IE "PRACH system information list" in System Information Block type 5 or 5bis when using the CCCH.
1> for FDD, if the UE supports NodeB triggered HS-DPCCH transmission:
2> configure the lower layers to not perform NodeB triggered HS-DPCCH transmission.
1> for FDD, determine the value of the variable READY_FOR_FALLBACK_R99_PRACH and take the corresponding actions as described in subclause 8.5.77.
If variable READY_FOR_COMMON_EDCH is set to TRUE:
1> if the UE is in CELL_PCH state; and
1> if the UE has uplink RLC data PDU or uplink RLC control PDU on RB1 or upwards to transmit:
2> move to CELL_FACH state and initiate the measurement report procedure as specified in subclause 8.4.2;
2> restart the timer T305 using its initial value if periodical cell update has been configured by T305 in the IE "UE Timers and constants in connected mode" set to any other value than "infinity".
1> for 1.28 Mcps TDD, if the UE is in CELL_PCH state and if the UE initiates uplink synchronization:
2> move the UE to CELL_FACH state.
1> for FDD:
2> if the UE supports NodeB triggered HS-DPCCH transmission;
3> if System Information Block type 22 includes IE "NodeB triggered HS-DPCCH transmission":
4> if variable H_RNTI, E_RNTI and C_RNTI is set:
5> configure the lower layers to perform NodeB triggered HS-DPCCH transmission.
4> else:
5> configure the lower layers to not perform NodeB triggered HS-DPCCH transmission.
3> else:
4> configure the lower layers to not perform NodeB triggered HS-DPCCH transmission.
2> determine the value of the variable READY_FOR_FALLBACK_R99_PRACH and take the corresponding actions as described in subclause 8.5.77.
2> if the UE supports cell reselection indication reporting in CELL_FACH state:
3> if System Information Block type 22 includes IE "Cell reselection indication reporting":
4> configure the MAC layer to enable cell reselection indication reporting.
3> else:
4> configure the MAC layer to disable cell reselection indication reporting.
If the UE is in CELL_FACH state or CELL_PCH state and the value of the variable READY_FOR_COMMON_EDCH has changed due to a system information modification, the UE shall:
1> when the UE has uplink RLC data PDU or uplink RLC control PDU on RB1 or upwards to transmit:
2> clear the variable C_RNTI, variable H_RNTI and variable E_RNTI;
2> if the UE is in CELL_FACH state:
3> initiate the cell update procedure with cell update cause "cell reselection" as specified in subclause 8.3.1.2.
2> if the UE is in CELL_PCH state:
3> initiate the cell update procedure with cell update cause "uplink data transmission" as specified in subclause 8.3.1.2.