Apparatus and method for transmission of sounding reference signal in uplink wireless communication systems with multiple antennas and sounding reference signal hopping

A method of Sounding Reference Signal (SRS) reception in a base station in a communications system using multiple antennas and SRS hopping, the method comprising:

• identifying an SRS reception time point;
• receiving the SRS through a transmission band at the SRS reception time point;
• and
• determining which antenna of a User Equipment (UE) transmitted the SRS by using an antenna index,
• wherein the antenna index is determined function based on a transmission time point and an SRS bandwidth configuration.

An apparatus for transmitting a Sounding Reference Signal (SRS) in a mobile communications system using multiple antennas and SRS hopping, the apparatus comprising:

• an SRS hopping generator configured to identify a transmission time point and setting a transmission band for transmitting the SRS;
• an SRS sequence generator configured to generate an SRS to be transmitted to a base station;
• an SRS transmit antenna index generator configured to determine an antenna index for transmitting the SRS;
• and
• an SRS transmit antenna selector configured to transmit the SRS to the base station according to the determined antenna index,
• wherein the antenna index is determined by a function based on the transmission time point and an SRS bandwidth configuration.

An apparatus for receiving a Sounding Reference Signal (SRS) in a mobile communications system using multiple antennas and SRS hopping, the apparatus comprising:

• a communication unit
• configured to receive the SRS through a transmission band at an SRS reception time point;
• and
• an SRS transmit antenna decision unit configured to determine which antenna of a User Equipment (UE) transmitted the SRS by using an antenna index,
• wherein the antenna index is determined by a function based on a transmission time point and an SRS bandwidth configuration.