Apparatus and method for supporting transmission of sounding reference signals from multiple antennas
Methods and apparatuses are provided for controlling reference signal (RS) transmission between a user equipment (UE) and a base station in a wireless communication system. A method includes transmitting, to the UE, downlink control information (DCI) including RS request information. The RS request information includes one or two binary elements based on a DCI format. If an RS transmission triggered by the RS request information is to occur in a same subframe as another RS transmission previously configured to the UE from the base station, the UE transmits the RS triggered by the RS request information.
1. A method for a base station in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), downlink control information (DCI) including reference signal (RS) request information, the RS request information including one or two binary elements based on a DCI format,
wherein, if a first RS transmission triggered by the RS request information and a second RS transmission triggered by radio resource control (RRC) signaling occur in a same subframe, an RS for the first RS transmission is transmitted by the UE.
2. The method of claim 1 , wherein the RS for the first RS transmission is transmitted once by the UE.
3. The method of claim 1 , wherein parameters for the first RS transmission and parameters for the second RS transmission are configured to the UE by the RRC signaling.
4. A method for a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a base station, downlink control information (DCI) including reference signal (RS) request information, the RS request information includes one or two binary elements based on a DCI format; and
transmitting an RS for a first RS transmission if the first RS transmission triggered by the RS request information and a second RS transmission triggered by radio resource control (RRC) signaling occur in a same subframe.
5. The method of claim 4 , wherein the RS for the first RS transmission is transmitted once by the UE.
6. The method of claim 4 , wherein parameters for the first RS transmission and parameters for the second RS transmission are configured to the UE by the RRC signaling.
7. A base station in a wireless communication system, the base station comprising:
a transceiver configured to transmit and receive signals; and
a controller configured to control the transceiver to:
transmit, to a user equipment (UE), downlink control information (DCI) including reference signal (RS) request information, the RS request information including one or two binary elements based on a DCI format,
wherein, if a first RS transmission triggered by the RS request information and a second RS transmission triggered by radio resource control (RRC) signaling occur in a same subframe, an RS for the first RS transmission is transmitted by the UE.
8. The base station of claim 7 , wherein the RS for the first RS transmission is transmitted once by the UE.
9. The base station of claim 7 , wherein parameters for the first RS transmission and parameters for the second RS transmission are configured to the UE by the RRC signaling.
10. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver configured to transmit and receive signals; and
a controller configured to control the transceiver to:
receive, from a base station, downlink control information (DCI) including reference signal (RS) request information, the RS request information including one or two binary elements based on a DCI format, and
transmit an RS for a first RS transmission if the first RS transmission triggered by the RS request information and a second RS transmission triggered by radio resource control (RRC) signaling occur in a same subframe.
11. The UE of claim 10 , wherein the RS for the first RS transmission is transmitted once by the UE.
12. The UE of claim 10 , wherein parameters for the first RS transmission and parameters for the second RS transmission are configured to the UE by the RRC signaling.