Uplink sounding reference signal transmission mechanism

An apparatus comprising:

• at least one processor;
• and
• at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
• receive, from a network device, information indicating that multiple antenna port sets are time division multiplexed with each other across multiple orthogonal frequency division multiplexing (OFDM) symbols of a sounding reference signal (SRS) resource in a slot;
• map the multiple antenna port sets into the multiple OFDM symbols of the SRS resource in the slot in a time division multiplexed manner based on the information;
• and
• transmit, to the network device, an SRS on the SRS resource, using the multiple antenna port sets.

An apparatus comprising:

• at least one processor;
• and
• at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
• transmit, to a terminal device, information indicating that multiple antenna port sets are time division multiplexed with each other across multiple orthogonal frequency division multiplexing, OFDM, symbols of a sounding reference signal, SRS, resource in a slot;
• and
• receive, from the terminal device, an SRS on the SRS resource, wherein transmission of the SRS is based on the information.

A method comprising:

• receiving, by a terminal device and from a network device, information indicating that multiple antenna port sets are time division multiplexed with each other across multiple orthogonal frequency division multiplexing (OFDM) symbols of a sounding reference signal (SRS) resource in a slot;
• mapping, by the terminal device, the multiple antenna port sets into the multiple OFDM symbols of the SRS resource in the slot in a time division multiplexed manner based on the information;
• and
• transmitting, by the terminal device and to the network device, an SRS on the SRS resource, using the multiple antenna port sets.