Method and apparatus to improve inter-band carrier aggregation (CA) in TDD (time division duplex) mode

摘要

A method and apparatus are disclosed to improve inter-band carrier aggregation (CA) in a UE (User Equipment) in TDD (Time Division Duplex) mode. In one embodiment, the method includes connecting the UE with a PCell (Primary Serving Cell). The method further includes configuring the UE with at least one SCell (Secondary Serving Cell), among which at least one SCell is deactivated, wherein TDD UL-DL (Uplink-Downlink) configurations of the PCell and the at least one SCell may be different. The method also includes taking a TDD UL-DL configuration of an activated serving cell into consideration for defining consecutive PDCCH (Physical Downlink Control Channel) subframes of a drx-InactivityTimer, and not taking a TDD UL-DL configuration of a deactivated serving cell into consideration.

主权项

1. A method for inter-band carrier aggregation in a UE (User Equipment) in TDD (Time Division Duplex) mode, comprising:
connecting the UE with a PCell (Primary Serving Cell), wherein the PCell is always activated; configuring the UE with at least one SCell (Secondary Serving Cell), among which at least one SCell is deactivated, wherein TDD UL-DL (Uplink-Downlink) configurations of the PCell and the at least one SCell are different; and taking a TDD UL-DL configuration of an activated serving cell into consideration for defining consecutive PDCCH (Physical Downlink Control Channel) subframes of a drx-InactivityTimer, and not taking a TDD UL-DL configuration of a deactivated serving cell into consideration, wherein there is only one DRX (Discontinuous Reception) configuration applied for the PCell and the at least one SCell, wherein the activated serving cell refers to the PCell or the SCell that is activated, and the deactivated serving cell refers to the SCell that is deactivated, and wherein an Activation/Deactivation MAC (Medium Access Control) control element (CE) is used to activate/deactivate the at least one SCell.