Method and apparatus for carrier selection and early data transmission (EDT) in a wireless communication system
AssigneeASUSTeK COMPUTER INC.
InventorsTun-Huai Shih, Meng-Hui Ou
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Abstract
A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE initiates a first Early Data Transmission (EDT) in RRC_INACTIVE state. Responsive to initiating the first EDT, the UE initiates a Random Access (RA) procedure in a cell configured with a normal uplink (NUL) carrier and a supplementary uplink (SUL) carrier. The UE selects the SUL carrier or the NUL carrier for performing the RA procedure based on at least one of whether there are one or more available Physical Random Access Channel (PRACH) resources for EDT on the SUL carrier or whether there are one or more available PRACH resources for EDT on the NUL carrier.
Claims22
A method of a User Equipment (UE), the method comprising:
- selecting a carrier, comprising a normal uplink (NUL) carrier or a supplementary uplink (SUL) carrier, based on whether a Reference Signal Received Power (RSRP) of a downlink pathloss reference is less than a threshold;
- after selecting the carrier, determining whether there are one or more available Physical Random Access Channel (PRACH) resources for early data transmission (EDT) available to the UE on the carrier;
- and
- performing or not performing a first EDT based on whether there are one or more PRACH resources for EDT available to the UE on the carrier.
A User Equipment (UE), comprising:
- a control circuit;
- a processor installed in the control circuit;
- and
- a memory installed in the control circuit and operatively coupled to the processor, wherein the processor is configured to execute a program code stored in the memory to perform operations, the operations comprising:
- selecting a carrier, comprising a normal uplink (NUL) carrier or a supplementary uplink (SUL) carrier, based on whether a Reference Signal Received Power (RSRP) of a downlink pathloss reference is less than a threshold;
- after selecting the carrier, determining whether there are one or more Physical Random Access Channel (PRACH) resources for early data transmission (EDT) available to the UE on the carrier;
- and
- performing or not performing a first EDT based on whether there are one or more PRACH resources for EDT available to the UE on the carrier.
Dependencies are inferred from the claim text.