Method and device for controlling transmission of sounding reference signal in wireless access system supporting machine type communication

A user equipment (UE) configured to operate in a wireless communication system, the UE comprising:

• a transceiver;
• and
• at least one processor coupled with the transceiver,
• wherein the at least one processor is configured to:
• receive downlink control information (DCI) for a physical uplink shared channel (PUSCH);
• and
• transmit, based on the DCI, the PUSCH in a subframe n,
• wherein based on (i) the UE being a machine type communication (MTC) UE and (ii) a narrowband of the PUSCH in the subframe n being different from a narrowband of a sounding reference signal (SRS) in the subframe n, the SRS is not transmitted by the UE in the subframe n, and
• wherein n is a non-negative integer.

A method performed by a base station configured to operate in a wireless communication system, the method comprising:

• transmitting, to a user equipment (UE), downlink control information (DCI) for a physical uplink shared channel (PUSCH);
• and
• receiving, in response to the DCI, the PUSCH in a subframe n,
• wherein based on (i) the UE being a machine type communication (MTC) UE and (ii) a narrowband of the PUSCH in the subframe n being different from a narrowband of a sounding reference signal (SRS) in the subframe n, the SRS is not received by the base station in the subframe n, and
• wherein n is a non-negative integer.

A base station configured to operate in a wireless communication system, the base station comprising:

• a transceiver;
• and
• at least one processor coupled with the transceiver,
• wherein the at least one processor is configured to:
• transmit, to a user equipment (UE), downlink control information (DCI) for a physical uplink shared channel (PUSCH);
• and
• receive, in response to the DCI, the PUSCH in a subframe n,
• wherein based on (i) the UE being a machine type communication (MTC) UE and (ii) a narrowband of the PUSCH in the subframe n being different from a narrowband of a sounding reference signal (SRS) in the subframe n, the SRS is not received by the base station in the subframe n, and
• wherein n is a non-negative integer.