8.5.81 Actions related to UPLINK_MIMO_TRANSMISSION variable (FDD only)

25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS

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

1> the UE is in CELL_DCH state;

1> the variable UPLINK _CLTD_TRANSMISSION is set to TRUE;

1> the variable HS_DSCH_RECEPTION is set to TRUE;

1> the variable E-DCH transmission is set to TRUE:

1> the UE has stored IE "Uplink MIMO info FDD";

1> the UE has stored IE "E-ROCH info FDD";

1> the UE has stored "E-TFC Boost Info";

1> the UE is configured with MAC-i/is.

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

1> set the variable UPLINK_MIMO_TRANSMISSION to FALSE;

1> indicate to lower layers to stop the uplink MIMO transmission;

1> do not configure "TSN field extension" for the MAC-i/is entity;

1> reset the MAC-i/is entity;

1> clear the stored IE "Uplink MIMO info FDD";

1> if configured, clear the stored E-HICH configuration for the secondary stream.

If all of the above conditions are met and the variable UPLINK_MIMO_TRANSMISSION is set to FALSE, the UE shall:

1> set the variable UPLINK_MIMO_TRANSMISSION to TRUE;

1> reset MAC-i/is entity;

1> configure "TSN field extension" for MAC-i/is entity;

1> indicate to lower layers to start the uplink MIMO transmission in rank1.

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

1> stop the uplink MIMO transmission.

If the variable UPLINK_MIMO_TRANSMISSION is set to TRUE and the serving HS-DSCH cell was changed as a result of the received message or HS-SCCH order from the target cell, the UE shall instruct the physical layer to switch to the uplink MIMO transmission in rank1.