Method for transmitting sounding reference signal in wireless communication system and apparatus for supporting same
Disclosed are a method for transmitting a sounding reference signal to a base station by a terminal and an apparatus for supporting the same. Particularly, disclosed is a sounding reference signal transmission method comprising: determining a transmission time point of a first SRS within a first TTI, which has a length shorter than the length of one subframe, on the basis of the first TTI; and transmitting the first SRS at the determined transmission time point, wherein a frequency resource at which the first SRS is transmitted is configured independently from a frequency resource at which a second SRS based on a second TTI having a length corresponding to the length of one subframe is transmitted.
1. A method of transmitting a sounding reference signal (SRS) from a user equipment (UE) to a base station in a wireless communication system, the method comprising:
determining a transmission time point of a first SRS within a first transmission time interval (TTI) based on the first TTI having a length smaller than that of one subframe; and
transmitting the first SRS at the determined time point,
wherein a frequency resource in which the first SRS is transmitted is configured independently of a frequency resource in which a second SRS is transmitted based on a second TTI having a length corresponding to that of one subframe.
2. The method according to claim 1 , wherein the transmission time point of the first SRS is a latest symbol in a time domain among symbols included in the first TTI.
3. The method according to claim 1 , wherein the transmission time point of the first SRS is indicated through downlink control information (DCI) or a higher layer signal received from the base station.
4. The method according to claim 1 , wherein the frequency resource in which the first SRS is transmitted does not overlap the frequency resource in which the second SRS is transmitted.
5. The method according to claim 1 , wherein, when a modulated reference signal is further transmitted at the transmission time point of the first SRS, the first SRS and the modulated reference signal are cyclic-shifted, multiplexed and transmitted.
6. The method according to claim 1 , wherein, when the frequency resource in which the first SRS is transmitted includes a limited frequency band, a sequence of the first SRS included in the limited frequency band is punctured and then transmission is performed.
7. The method according to claim 1 , wherein the first SRS is frequency-hopped within set SRS system bandwidth and then is transmitted.
8. A user equipment (UE) for transmitting a sounding reference signal (SRS) to a base station in a wireless communication system, the UE comprising:
a receiver;
a transmitter; and
a processor connected to the receiver and the transmitter to operate,
wherein the processor is configured to:
determine a transmission time point of a first SRS within a first transmission time interval (TTI) based on the first TTI having a length smaller than that of one subframe; and
transmit the first SRS at the determined time point, and
wherein a frequency resource in which the first SRS is transmitted is configured independently of a frequency resource in which a second SRS is transmitted based on a second TTI having a length corresponding to that of one subframe.
9. The UE according to claim 8 , wherein the transmission time point of the first SRS is a latest symbol in a time domain among symbols included in the first TTI.
10. The UE according to claim 8 , wherein the transmission time point of the first SRS is indicated through downlink control information (DCI) or a higher layer signal received from the base station.
11. The UE according to claim 8 , wherein the frequency resource in which the first SRS is transmitted does not overlap the frequency resource in which the second SRS is transmitted.
12. The UE according to claim 8 , wherein, when a modulated reference signal is further transmitted at the transmission time point of the first SRS, the first SRS and the modulated reference signal are cyclic-shifted, multiplexed and transmitted.
13. The UE according to claim 8 , wherein, when the frequency resource in which the first SRS is transmitted includes a limited frequency band, a sequence of the first SRS included in the limited frequency band is punctured and then transmission is performed.
14. The UE according to claim 8 , wherein the first SRS is frequency-hopped within set SRS system bandwidth and then is transmitted.