Method of transmitting uplink phase tracking reference signal by user equipment in wireless communication system and apparatus supporting same
AssigneeLG Electronics Inc.
InventorsKilbom Lee, Jiwon Kang, Haewook Park
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Abstract
The present invention proposes a method of transmitting and receiving an uplink phase tracking reference signal between a user equipment and a base station in a wireless communication system and an apparatus therefore. According to one embodiment applicable to the present invention, the user equipment can transmit an uplink phase tracking reference signal to the base station using a power boosting level determined based on first information and second information received from the base station.
Claims20
A method of transmitting a phase tracking reference signal (PT-RS) by a user equipment (UE) in a wireless communication system, the method comprising:
- obtaining precoding matrix information for transmission of a Physical Uplink Shared Channel (PUSCH);
- based on that a radio resource control (RRC) parameter related to a power boosting level of the PT-RS is not configured to the UE, determining the power boosting level of the PT-RS based on a precoding matrix type of the precoding matrix information;
- and
- transmitting, to a base station, the PT-RS based on the determined power boosting level,
- wherein the power boosting level is related to a ratio of PUSCH power to PT-RS power per layer and per resource element (RE),
- wherein, based on the precoding matrix type being a full coherent precoding matrix, the power boosting level is determined based on a number of PUSCH layer,
- wherein, based on the precoding matrix type being a partial coherent precoding matrix or a non-coherent precoding matrix, the power boosting level is determined based on a number of PT-RS ports configured to the UE.
A user equipment (UE) configured to transmit a phase tracking reference signal (PT-RS) in a wireless communication system, the UE comprising:
- a radio frequency (RF) module;
- at least one processor;
- and
- at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
- obtaining precoding matrix information for transmission of a Physical Uplink Shared Channel (PUSCH);
- based on that a radio resource control (RRC) parameter related to a power boosting level of the PT-RS is not configured to the UE, determining the power boosting level of the PT-RS based on a precoding matrix type of the precoding matrix information;
- and
- transmitting, to a base station, the PT-RS based on the determined power boosting level,
- wherein the power boosting level is related to a ratio of PUSCH power to PT-RS power per layer and per resource element (RE),
- wherein, based on the precoding matrix type being a full coherent precoding matrix, the power boosting level is determined based on a number of PUSCH layer,
- wherein, based on the precoding matrix type being a partial coherent precoding matrix or a non-coherent precoding matrix, the power boosting level is determined based on a number of PT-RS ports configured to the UE.
Dependencies are inferred from the claim text.