8.5.71 Actions related to MULTIFLOW_STATUS variable (FDD only)

25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS

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

1> the UE is in CELL_DCH state;

1> the variable HS_DSCH_RECEPTION is TRUE;

1> at least one of the entries in the variable SECONDARY_CELL_HS_DSCH_RECEPTION is TRUE;

1> the IE "Multiflow configuration" is present in all the entries in DOWNLINK_SECONDARY_CELL_INFO.

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

1> set the variable MULTIFLOW_STATUS to FALSE.

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

1> perform Multiflow data reception as specified in [51];

1> indicate to lower layers value of "Multiflow configuration" IE of each entry in DOWNLINK_SECONDARY_CELL_INFO;

1> if Multiflow configuration is four cells on three frequencies, then indicate to lower layers numbering of the first (assisting) and second (assisting) secondary serving HS-DSCH cells;

1> for every entry in DOWNLINK_SECONDARY_CELL_INFO:

2> if the stored UARFCN downlink (Nd) in the entry is the same as the value of the serving HS-DSCH cell:

3> if the IE "Multiflow time reference cell" is not present:

4> indicate to lower layers that the serving HS-DSCH cell is time reference for HS-DPCCH;

3> else:

4> indicate to lower layers that the cell is a time reference for HS-DPCCH;

2> else:

3> if the IE "Multiflow time reference cell" is present:

4> indicate to lower layers that the cell and the time reference cell are in the same cell group as specified in [27];

3> else:

4> indicate to lower layers that the cell and the non-time reference cell are in the same cell group as specified in [27];

1> If there is at least one entry in DOWNLINK_SECONDARY_CELL_INFO with the IE "Multiflow cell", value of which is set to "inter-NodeB":

2> configure two MAC-ehs entities;

2> associate with the first MAC-ehs entity the serving HS-DSCH cell and all the HS-DSCH cells, entries of which in DOWNLINK_SECONDARY_CELL_INFO have the IE "Multiflow cell" set to "intra-NodeB";

2> associate with the second MAC-ehs entity all the HS-DSCH cells, entries of which in DOWNLINK_SECONDARY_CELL_INFO have the IE "Multiflow cell" set to "inter-NodeB";

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

1> stop Multiflow operation;

1> if Timer_Reordering was configured for the receiving RLC entity:

2> configure the receiving RLC entity not to use the corresponding function;

1> if two MAC-ehs entities were configured for the inter-Node B Multiflow operation:

2> configure one MAC-ehs entity;

1> indicate to lower layers that the serving HS-DSCH cell must be used as a time reference for HS-DPCCH.