Method and apparatus for transmitting and receiving uplink reference signal in wireless communication systems
AssigneeSamsung Electronics Co., Ltd.
InventorsHoondong Noh, Jinhyun Park, Heecheol Yang, Hyoungju Ji
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Abstract
A method, performed by a user equipment (UE), of transmitting an uplink (UL) reference signal in a wireless communication system is provided. The method includes receiving first information indicating whether to apply transform precoding and pi/2 binary phase shift keying (BPSK) modulation to a physical uplink shared channel (PUSCH), receiving second information indicating whether to apply the pi/2 BPSK modulation to an UL demodulation reference signal (DMRS), and identifying a sequence having characteristics of a first peak-to-average power ratio (PAPR) based on the first information and the second information.
Claims20
A method performed by a terminal in a wireless communication system, the method comprising:
- receiving, from a base station, first information through a system information block (SIB) or a higher layer signaling, the first information indicating that a transform precoding is enabled;
- receiving, from the base station, second information and third information through the higher layer signaling, the second information indicating that a pi/2 binary phase shift keying (BPSK) modulation is used for a physical uplink shared channel (PUSCH), and the third information indicating that a first demodulation reference signal (DMRS) is used for the PUSCH with the pi/2 BPSK modulation;
- identifying that the transform precoding is enabled for the PUSCH based on the first information;
- generating a first sequence, in case that the transform precoding is enabled for the PUSCH, the pi/2 BPSK modulation is used for the PUSCH, and the first DMRS is used for the PUSCH with the pi/2 BPSK modulation;
- and
- transmitting, to the base station, the first DMRS for the PUSCH using the first sequence.
A terminal in a wireless communication system, the terminal comprising:
- a transceiver;
- and
- at least one processor coupled with the transceiver,
- wherein the at least one processor is configured to:
- receive, from a base station, first information through a system information block (SIB) or a higher layer signaling, the first information indicating that a transform precoding is enabled,
- receive, from the base station, second information and third information through the higher layer signaling, the second information indicating that a pi/2 binary phase shift keying (BPSK) modulation is used for a physical uplink shared channel (PUSCH), and the third information indicating that a first demodulation reference signal (DMRS) is used for the PUSCH with the pi/2 BPSK modulation,
- identify that the transform precoding is enabled for the PUSCH based on the first information,
- generate a first sequence, in case that the transform precoding is enabled for the PUSCH, the pi/2 BPSK modulation is used for the PUSCH, and the first DMRS is used for the PUSCH with the pi/2 BPSK modulation, and
- transmit, to the base station, the first DMRS for the PUSCH using the first sequence.
A method performed by a base station in a wireless communication system, the method comprising:
- transmitting first information through a system information block (SIB) or a higher layer signaling, the first information indicating that a transform precoding is enabled;
- transmitting, to a user equipment (UE), second information and third information through the higher layer signaling, the second information indicating that a pi/2 binary phase shift keying (BPSK) modulation is used for a physical uplink shared channel (PUSCH), and the third information indicating that a first demodulation reference signal (DMRS) is used for the PUSCH with the pi/2 BPSK modulation;
- and
- receiving, from the UE, the first DMRS for the PUSCH using a first sequence,
- wherein the first sequence is generated, in case that the transform precoding is enabled for the PUSCH, the pi/2 BPSK modulation is used for the PUSCH, and the first DMRS is used for the PUSCH with the pi/2 BPSK modulation.
A base station in a wireless communication system, the base station comprising:
- a transceiver;
- and
- at least one processor coupled with the transceiver,
- wherein the at least one processor is configured to:
- transmit first information through a system information block (SIB) or a higher layer signaling, the first information indicating that a transform precoding is enabled,
- transmit, to a user equipment (UE), second information and third information through the higher layer signaling, the second information indicating that a pi/2 binary phase shift keying (BPSK) modulation is used for a physical uplink shared channel (PUSCH), and the third information indicating that a first demodulation reference signal (DMRS) is used for the PUSCH with the pi/2 BPSK modulation,
- receive, from the UE, the first DMRS for the PUSCH using a first sequence,
- wherein the first sequence is generated, in case that the transform precoding is enabled for the PUSCH, the pi/2 BPSK modulation is used for the PUSCH, and the first DMRS is used for the PUSCH with the pi/2 BPSK modulation.
Dependencies are inferred from the claim text.