Method for transmitting and receiving SRS, and communication apparatus therefor

A method of receiving a sounding reference signal (SRS) by a base station (BS), the method comprising:

• transmitting a number of SRS repetition symbols, group hopping patterns, sequence hopping patterns, pattern selection information, and hopping selection information to a user equipment (UE);
• and
• receiving the SRS based on an SRS sequence generated by applying a first group hopping pattern and a first sequence hopping pattern selected according to the pattern selection information and the hopping selection information,
• wherein the group hopping patterns include the first group hopping pattern calculated based on the number of SRS repetition symbols,
• the sequence hopping patterns include the first sequence hopping pattern calculated based on the number of SRS repetition symbols, and
• selecting enabling or disabling of group hopping and sequence hopping is based on the hopping selection information.

A user equipment (UE) for transmitting a sounding reference signal (SRS), the UE comprising:

• a processor;
• and
• a transmitter and receiver coupled to the processor to transmit or receive a radio signal,
• wherein the processor:
• receives a number of SRS repetition symbols, group hopping patterns, sequence hopping patterns, pattern selection information, and hopping selection information from a base station (BS) through the receiver, generates an SRS sequence by applying a first group hopping pattern and a first sequence hopping pattern selected according to the pattern selection information and the hopping selection information, and transmits the SRS based on the generated SRS sequence,
• the group hopping patterns include the first group hopping pattern calculated based on the number of SRS repetition symbols,
• the sequence hopping patterns include the first sequence hopping pattern calculated based on the number of SRS repetition symbols, and
• the processor selects enabling of only one of group hopping and sequence hopping based on the hopping selection information.

A base station (BS) for receiving a sounding reference signal (SRS), the BS comprising:

• a processor;
• and
• a transmitter and receiver coupled to the processor to transmit or receive a radio signal,
• wherein the processor:
• transmits a number of SRS repetition symbols, group hopping patterns, sequence hopping patterns, pattern selection information, and hopping selection information through the transmitter to a user equipment (UE), and receives the SRS based on an SRS sequence generated by applying a first group hopping pattern and a first sequence hopping pattern selected according to the pattern selection information and the hopping selection information from the UE,
• the group hopping patterns include the first group hopping pattern calculated based on the number of SRS repetition symbols,
• the sequence hopping patterns include the first sequence hopping pattern calculated based on the number of SRS repetition symbols, and
• selecting enabling of only one of group hopping and sequence hopping is based on the hopping selection information.