Tm9-based carrier aggregation method and device
AssigneeDatang Mobile Communications Equipment Co., Ltd.
InventorsFengran GUO, Yi SHEN
Life of this patent
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Abstract
A TM9-based carrier aggregation (CA) method and device, wherein the method includes: a network side device determining a component carrier (CC) currently activated in a CA system; if a CC configured with TM9 exists in the currently activated CCs, the network side device determining a CC transmission mode (TM) for the CC configured with TM9; the network side device transmitting data to a UE according to the TM. An embodiment enables a CA cell to support CA of 8 downlink (DL) ports for TD-LTE-A cell using TM9, thus increasing user rate and improving user experience. The method increases checkpoints such as maximum supporting data streams and UE capability, thus increasing user throughput.
Claims16
A TM9-based carrier aggregation method, comprising:
- a network side device determining that a component carrier (CC) is currently activated in a carrier aggregation (CA) system;
- if a CC configured with TM9 exists in the currently activated CCs, the network side device determines a CC transmission mode (TM) for the CC configured with TM9;
- the network side device transmits data to a UE according to the TM.
A TM9-based carrier aggregation (CA) method, comprising:
- a user equipment (UE) receiving the TM of a CC from a network side device;
- when the TM of the CC is codebook TM9 single-stream or codebook TM9 dual-stream, and the SCC enables the adaptive function between modes, if the RSRP is greater than the preset first threshold and SINR is greater than the preset second threshold, the UE adapts the transmission mode to TM3;
- otherwise, the UE adapts the transmission mode to TM9 single-stream or TM9 dual-stream;
- when the TM of the CC is codebook TM9 four-stream or codebook TM9 eight-stream, and the SCC enables the adaptive function between modes, if RSRP is greater than the preset third threshold, and SINR is greater than the preset fourth threshold, the UE adapts the transmission mode to TM9 four-stream or TM9 eight-stream;
- otherwise, the UE adapts the transmission mode to TM3.
A network side device, comprising:
- a #1 determining module for determining the CC which is currently activated in the CA system;
- a #2 determining module for determining the TM of the CC configured with TM9 when CC configured with TM9 exists in the currently active CCs;
- and
- a transmission module for transmitting data to the user equipment (UE) according to the TM.
A user equipment (UE), comprising:
- a receiving module, for receiving the TM of a CC from the network side device;
- and
- a processing module, which is used in that when the TM of the CC is codebook TM9 single-stream or codebook TM9 dual-stream, and the SCC enables the adaptive function between modes, if RSRP is greater than the preset first threshold, and SINR is greater than the preset second threshold, the transmission mode is adapted to TM3;
- otherwise, the transmission mode is adapted to TM9 single-stream or TM9 dual-stream;
- or, when the TM of the CC is codebook TM9 four-stream or codebook TM9 eight-stream, and the SCC enables the adaptive function between modes, if RSRP is greater than the preset third threshold, and SINR is greater than the preset fourth threshold, the transmission mode is adapted to TM9 four-stream or TM9 eight-stream;
- otherwise, the transmission mode is adapted to TM3.
Dependencies are inferred from the claim text.