Method for transmitting and receiving SRS and communication device therefor
A method for transmitting an SRS by a user equipment may comprise the steps of: transmitting, to a base station, user equipment capability information including information on a frequency bandwidth where SRS frequency hopping for the user equipment is possible; receiving, from the base station, first information on an SRS bandwidth configuration and second information on the start point of an SRS frequency for transmission of an SRS; and transmitting the SRS to the base station on the basis of the first information and the second information, wherein the frequency bandwidth where SRS frequency hopping for the user equipment is possible corresponds to a partial frequency bandwidth within a bandwidth part (BWP) configured for transmission of the SRS. The UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.
1. A method of transmitting a sounding reference signal (SRS) by a user equipment (UE), the method comprising:
transmitting, to a base station (BS), UE capability information for transmission of the SRS;
receiving, from the BS, first information for configuring an SRS bandwidth and second information on an SRS frequency start position for transmission of the SRS,
wherein the SRS bandwidth is determined based on a combination of two parameters in a predefined table for configuring the SRS bandwidth,
wherein a first parameter of the two parameters is an index representing a row of the predefined table, a second parameter of the two parameters has a value among {0, 1, 2, 3}, and the first parameter is determined based on a number of SRS symbols configured in one slot and wherein the first information includes information representing the two parameters; and
transmitting, to the BS, the SRS with intra-slot frequency hopping based on the first and second information,
wherein the UE capability information includes information on a bandwidth for SRS frequency hopping,
wherein the bandwidth for the SRS frequency hopping corresponds to a partial band among a plurality of partial bands included in a bandwidth part (BWP) configured for the UE, and the combination of the two parameters determined based on the UE capability information represents the partial band.
2. The method of claim 1 , wherein the first and second information are determined by the UE capability information.
3. The method of claim 1 , further comprising receiving, from the BS, third information on whether the UE operates in a mode of transmitting the SRS by performing frequency hopping at a frequency bandwidth level capable of the SRS frequency hopping within the SRS bandwidth, wherein the SRS is transmitted further based on the third information.
4. The method of claim 1 , further comprising:
receiving information on the BWP configured for the UE, and
wherein the BWP is configured for transmission of the SRS.
5. A method of receiving a sounding reference signal (SRS) by a base station (BS), the method comprising:
receiving, from a user equipment (UE), UE capability information for transmission of the SRS;
configuring first information for configuring an SRS bandwidth and second information on an SRS frequency start position for transmission of the SRS based on the UE capability information,
wherein the SRS bandwidth is determined based on a combination of two parameters in a predefined table for configuring the SRS bandwidth,
wherein a first parameter of the two parameters is an index representing a row of the predefined table, a second parameter of the two parameters has a value among {0, 1, 2, 3}, and the first parameter is determined based on a number of SRS symbols configured in one slot, and
wherein the first information includes information representing the two parameters;
transmitting, to the UE, the first and second information; and
receiving, from the UE, the SRS with intra-slot frequency hopping based on the first and second information,
wherein the UE capability information includes information on a bandwidth for SRS frequency hopping,
wherein the bandwidth for the SRS frequency hopping corresponds to a partial band among a plurality of partial bands included in a bandwidth part (BWP) configured for the UE, and the combination of the two parameters determined based on the UE capability information represents the partial band.
6. The method of claim 5 , further comprising transmitting, to the UE, third information on whether the UE operates in a mode of transmitting the SRS by performing frequency hopping at a frequency bandwidth level capable of the SRS frequency hopping within the SRS bandwidth, wherein the SRS is received further based on the third information.
7. The method of claim 5 , further comprising;
transmitting, to the UE, information on the BWP configured for the UE,
wherein the BWP is configured for transmission of the SRS.
8. A user equipment (UE) for transmitting a sounding reference signal (SRS), the UE comprising:
a transmitter configured to transmit, to a base station (BS), UE capability information for transmission of the SRS;
a receiver configured to receive, from the BS, first information for configuring an SRS bandwidth and second information on an SRS frequency start position for transmission of the SRS
wherein the SRS bandwidth is determined based on a combination of two parameters in a predefined table for configuring the SRS bandwidth,
wherein a first parameter of the two parameters is an index representing a row of the predefined table, a second parameter of the two parameters has a value among {0, 1, 2, 3}, and the first parameter is determined based on a number of SRS symbols configured in one slot, and
wherein the first information includes information representing the two parameters; and
a processor configured to control the transmitter to transmit, to the BS, the SRS with intra-slot frequency hopping based on the first and second information,
wherein the UE capability information includes information on a bandwidth for SRS frequency hopping,
wherein the bandwidth for the SRS frequency hopping corresponds to a partial band among a plurality of partial bands included in a bandwidth part (BWP) configured for the UE, and the combination of the two parameters determined based on the UE capability information represents the partial band.
9. The UE of claim 8 , wherein the receiver is configured to receive, from the BS, third information on whether the UE operates in a mode of transmitting the SRS by performing frequency hopping at a frequency bandwidth level capable of the SRS frequency hopping within the SRS bandwidth, and the processor is configured to control the transmitter to transmit the SRS further based on the third information.
10. The UE of claim 8 , wherein the receiver is configured to receive information on the BWP configured for the UE, and
wherein the BWP is configured for transmission of the SRS.
11. A base station (BS) for receiving a sounding reference signal (SRS), the BS comprising:
a receiver configured to receive, from a user equipment (UE), UE capability information for transmission of the SRS;
a processor configured to configure first information for configuring an SRS bandwidth configuration and second information on an SRS frequency start position for transmission of the SRS based on the UE capability information,
wherein the SRS bandwidth is determined based on a combination of two parameters in a predefined table for configuring the SRS bandwidth,
wherein a first parameter of the two parameters is an index representing a row of the predefined table, a second parameter of the two parameters has a value among {0, 1, 2, 3}, and the first parameter is determined based on a number of SRS symbols configured in one slot, and
wherein the first information includes information representing the two parameters; and
a transmitter configured to transmit, to the UE, the first and second information,
wherein the processor is configured to control the receiver to receive, from the UE, the SRS with intra-slot frequency hopping based on the first and second information, and
wherein the UE capability information includes information on a bandwidth for SRS frequency hopping,
wherein the bandwidth for the SRS frequency hopping corresponds to a partial band among a plurality of partial bands included in a bandwidth part (BWP) configured for the UE, and the combination of the two parameters determined based on the UE capability information represents the partial band.
12. The BS of claim 11 , wherein the transmitter is configured to transmit, to the UE, third information on whether the UE operates in a mode of transmitting the SRS by performing frequency hopping at a frequency bandwidth level capable of the SRS frequency hopping within the SRS bandwidth, and wherein the processor is configured to control the receiver to receive the SRS further based on the third information.
13. The UE of claim 8 ,
wherein the UE is capable of communicating with at least one of another UE, a UE related to an autonomous driving vehicle, a base station or a network.