Numerologies for distributing an excess cyclic prefix during orthogonal frequency-division multiplexing

A method of wireless communication at a scheduling entity, comprising:

• establishing communication with a user equipment (UE) using a first sub-carrier spacing (SCS) and a first orthogonal frequency-division multiplexing (OFDM) numerology wherein (a) an excess cyclic prefix (CP) is distributed among a set of symbols that occupy a time interval within or equal to a corresponding time interval of a symbol of a second OFDM numerology of a second SCS that is lower than the first SCS or (b) the excess CP is distributed as prefix and postfix portions to one of the symbols of the set of symbols;
• wherein the excess CP of (a) or (B) is distributed while maintaining symbol alignment between the first and second OFDM numerologies at sampling rates corresponding to at least one Fast Fourier Transform (FFT) size and at least one decimated version of the FFT;
• and
• communicating with the UE using the first OFDM numerology at the first SCS.

A user equipment (UE) of a wireless communication system, comprising:

• a communication interface configured for wireless communication;
• and
• a processor operatively coupled to the communication interface and configured to:
• establish communication with a base station using a first sub-carrier spacing (SCS) and a first orthogonal frequency-division multiplexing (OFDM) numerology wherein (a) an excess cyclic prefix (CP) is distributed among a set of symbols that occupy a time interval within or equal to a corresponding time interval of a symbol of a second OFDM numerology with a second SCS that is lower than the first SCS or (b) the excess CP is distributed as prefix and postfix portions to one of the symbols of the set of symbols;
• wherein the excess CP of (a) or (B) is distributed while maintaining symbol alignment between the first and second OFDM numerologies at sampling rates corresponding to at least one Fast Fourier Transform (FFT) size and at least one decimated version of the FFT;
• and
• communicate with the base station via the communication interface using the first SCS and the first OFDM numerology.

A method of wireless communication at a user equipment (UE), comprising:

• establishing communication with a base station using a first sub-carrier spacing (SCS) and a first orthogonal frequency-division multiplexing (OFDM) numerology wherein (a) an excess cyclic prefix (CP) is distributed among a set of symbols that occupy a time interval within or equal to a corresponding time interval of a symbol of a second OFDM numerology with a second SCS that is lower than the first SCS or (b) the excess CP is distributed as prefix and postfix portions to one of the symbols of the set of symbols;
• wherein the excess CP of (a) or (B) is distributed while maintaining symbol alignment between the first and second OFDM numerologies at sampling rates corresponding to at least one Fast Fourier Transform (FFT) size and at least one decimated version of the FFT;
• and
• communicating with the base station using the first OFDM numerology at the first SCS.