Method and apparatus for uplink transmission and reception in wireless communication system
Disclosed are a method and apparatus for uplink transmission and reception in a wireless communication system. The method for performing, by a terminal, an uplink transmission in a wireless communication system according to an embodiment of the present disclosure comprises the steps of: receiving, from a base station, downlink control information (DCI) including a phase tracking reference signal (PTRS)-demodulation reference signal (DMRS) association field; and performing the uplink transmission on the basis of the DCI. The PTRS-DMRS association field may include first information for a first resource group, related to the association between a PTRS port and a DMRS port and second information for a second resource group, related to the association between the PTRS port and the DMRS port.
1 . A method comprising:
receiving, by a user equipment (UE) from a base station, a radio resource control signal including information related to a plurality of sounding reference signal (SRS) resource sets, wherein the plurality of SRS resource sets include a first SRS resource set and a second SRS resource set;
receiving, by the UE from the base station, downlink control information (DCI) including a SRS resource set indicator field related to at least one of the plurality of SRS resource sets and a plurality of SRS resource indicator (SRI) fields, wherein the plurality of SRI fields include a first SRI field related to the first SRS resource set and a second SRI field related to the second SRS resource set; and
performing uplink transmission based on the DCI,
wherein based on a maximum rank or layer of the uplink transmission being 2:
the DCI includes a single 2 (two)-bit phase tracking reference signal (PTRS)—demodulation reference signal (DMRS) association field, a most significant bit (MSB) of the single 2-bit PTRS-DMRS association field includes first information related to an association between a PTRS port and a DMRS port corresponding to at least one of the first SRI field or a first precoding information and number of layers field, and a least significant bit (LSB) of the single 2-bit PTRS-DMRS association field includes second information related to an association between a PTRS port and a DMRS port corresponding to at least one of the second SRI field or a second precoding information field, and
wherein, based on the maximum rank or layer of the uplink transmission being more than 2:
the DCI includes a first 2-bit PTRS-DMRS association field and a second 2-bit PTRS-DMRS association field, the first 2-bit PTRS-DMRS association field includes the first information, and the second 2-bit PTRS-DMRS association field includes third information related to an association between a PTRS port and a DMRS port corresponding to at least one of the first SRI field or a first precoding information and number of layers field, and the second 2-bit PTRS-DMRS association field includes fourth information related to an association between a PTRS port and a DMRS port corresponding to at least one of the second SRI field or a second precoding information field.
2 . The method of claim 1 , wherein:
the uplink transmission includes physical uplink shared channel (PUSCH) transmission.
3 . The method of claim 1 , wherein:
the uplink transmission for the first SRI field or the first precoding information and number of layers field includes PTRS transmission through the PTRS port associated with the DMRS port indicated by the first information, and
the uplink transmission for the second SRI field or the second precoding information field includes PTRS transmission through the PTRS port associated with the DMRS port indicated by the second information.
4 . The method of claim 1 , wherein:
the uplink transmission is a non-codebook-based transmission or a codebook-based transmission.
5 . A user equipment (UE) comprising:
at least one transceiver; and
at least one processor connected to the at least one transceiver,
wherein the processor is configured to:
receive, through the at least one transceiver, a radio resource control signal including information related to a plurality of sounding reference signal (SRS) resource sets from a base stations, wherein the plurality of SRS resource sets include a first SRS resource set and a second SRS resource set;
receive, through the at least one transceiver, downlink control information (DCI) including a SRS resource set indicator field related to at least one of the plurality of SRS resource sets, and a plurality of SRS resource indicator (SRI) fields, wherein the plurality of SRI fields include a first SRI field related to the first SRS resource set and a second SRI field related to the second SRS resource set from a base station; and
perform uplink transmission based on the DCI,
wherein, based on a maximum rank or layer of the uplink transmission being 2:
the DCI includes a single 2 (two)-bit phase tracking reference signal (PTRS)—demodulation reference signal (DMRS) association field, a most significant bit (MSB) of the single 2-bit PTRS-DMRS association field includes first information related to an association between a PTRS port and a DMRS port corresponding to at least one of the first SRI field or a first precoding information and number of layers field, and a least significant bit (LSB) of the single 2-bit PTRS-DMRS association field includes second information related to an association between a PTRS port and a DMRS port corresponding to at least one of the second SRI field or a second precoding information field, and
wherein, based on the maximum rank or layer of the uplink transmission being more than 2:
the DCI includes a first 2-bit PTRS-DMRS association field and a second 2-bit PTRS-DMRS association field, the first 2-bit PTRS-DMRS association field includes third information related to an association between a PTRS port and a DMRS port corresponding to at least one of the first SRI field or a first precoding information and number of layers field, and the second 2-bit PTRS-DMRS association field includes fourth information related to an association between a PTRS port and a DMRS port corresponding to at least one of the second SRI field or a second precoding information field.
6 . A method comprising:
transmitting, by a base station to a user equipment (UE), a radio resource control signal including information related to a plurality of sounding reference signal (SRS) resource sets, wherein the plurality of SRS resource sets include a first SRS resource set and a second SRS resource set;
transmitting, by the base station to the UE, downlink control information (DCI) including a SRS resource set indicator field related to at least one of the plurality of SRS resource sets, and a plurality of SRS resource indicator (SRI) fields, wherein the plurality of SRI fields include a first SRI field related to the first SRS resource set and a second SRI field related to the second SRS resource set; and
performing uplink reception based on the DCI,
wherein, based on a maximum rank or layer of the uplink reception being 2:
the DCI includes a single 2 (two)-bit phase tracking reference signal (PTRS)—demodulation reference signal (DMRS) association field, a most significant bit (MSB) of the single 2-bit PTRS-DMRS association field includes first information related to an association between a PTRS port and a DMRS port corresponding to at least one of the first SRI field or a first precoding information and number of layers field, and a least significant bit (LSB) of the single 2-bit PTRS-DMRS association field includes second information related to an association between a PTRS port and a DMRS port corresponding to at least one of the second SRI field or a second precoding information field, and
wherein, based on the maximum rank or layer of the uplink reception being more than 2:
the DCI includes a first 2-bit PTRS-DMRS association field and a second 2-bit PTRS-DMRS association field, the first 2-bit PTRS-DMRS association field includes third information related to an association between a PTRS port and a DMRS port corresponding to at least one of the first SRI field or a first precoding information and number of layers field, and the second 2-bit PTRS-DMRS association field includes fourth information related to an association between a PTRS port and a DMRS port corresponding to at least one of the second SRI field or a second precoding information field.