Transmitting apparatus, receiving apparatus and methods thereof

A communication apparatus, comprising:

• a receiver, which, in operation, receives first reference signals used for a physical sidelink control channel (PSCCH) and second reference signals used for a physical sidelink shared channel (PSSCH);
• and
• circuitry, which, in operation, performs a demodulation process based on the first and second reference signals within a slot,
• wherein the first reference signals are mapped to a first resource, and the second reference signals are mapped to a second resource which is different from the first resource,
• wherein a first time interval between the first reference signals is shorter than a second time interval between the second reference signals,
• wherein the PSSCH and the PSCCH are multiplexed in a frequency domain, and
• wherein a preamble is transmitted in one symbol preceding the PSCCH and the PSSCH.

A communication method, comprising:

• receiving first reference signals used for a physical sidelink control channel (PSCCH) and second reference signals used for a physical sidelink shared channel (PSSCH);
• and
• performing a demodulation process based on the first and second reference signals within a slot,
• wherein the first reference signals are mapped to a first resource, and the second reference signals are mapped to a second resource which is different from the first resource,
• wherein a first time interval between the first reference signals is shorter than a second time interval between the second reference signals,
• wherein the PSSCH and the PSCCH are multiplexed in a frequency domain, and
• wherein a preamble is transmitted in one symbol preceding the PSCCH and the PSSCH.