Communication apparatuses and communication methods for optimising time domain window and dmrs for joint channel estimation

A communication apparatus, comprising;

• circuitry, which, in operation, determines one or more time domain windows for multiple physical uplink shared channel (PUSCH) transmissions, each length of the one or more time domain windows being no more than an overall length of the multiple PUSCH transmissions;
• and
• a transmitter, which, in operation, transmits reference signals based on the one or more time domain windows.

A communication method, comprising:

• determining one or more time domain windows for multiple physical uplink shared channel (PUSCH) transmissions, each length of the one or more time domain windows being no more than an overall length of the multiple PUSCH transmissions;
• and
• transmitting reference signals based on the one or more time domain windows.

A communication method, comprising:

• receiving an indication of one or more time domain windows for multiple physical uplink shared channel (PUSCH) transmissions, each length of the one or more time domain windows being no more than an overall length of the multiple PUSCH transmissions;
• and
• transmitting reference signals based on the one or more time domain windows.