A.Packet routing and forwarding

B.Mobility anchor: SGW acts as the anchor point of the user plane when switching between eNB

C.User IP address allocation

D.Downstream data cache

A.L.ChMeas.CQI.DL.*

B.L.ChMeas.PUSCH.MCS.*

C.L.ChMeas.PRB.PDSCH.Uti1.Samp.*

D.L.ChMeas.PDSCH.MCS.*

A.The primary cell is the cell in which the CA UE resides, that is, the primary serving cell. The operation of the CA UE in this cell is no different from other R8/9 cells. Only the PCell has the PUCCH channel.

B.Component carrier refers to the carrier corresponding to different cells participating in carrier aggregation

C.The secondary cell refers to a cell that is configured to the CA UE through RRC connection signaling and works on the secondary carrier to provide more radio resources for the CA UE. SCell only has downlink and no uplink

D.PCC anchor point, which refers to the high priority resident PCC selected by the eNodeB

A.C-MSISDN

B.STN-SR

C.IMPI

D.ATU-STI

A.UE specific RS

B.Cell specific RS

C.Uplink reference signal SRS

D.Uplink reference signal DM RS