Reference signal sequence identification in wireless communications

A method for wireless communication at a base station, comprising:

• establishing a connection with at least a first user equipment (UE) that uses a n/2 binary phase shift keying (BPSK) modulation scheme for at least a portion of wireless communications with the first UE;
• transmitting an indication of a type of reference signal sequence to be included within transmissions of at least the first UE that use the π/2 BPSK modulation scheme;
• receiving a transmission from at least the first UE that uses the π/2 BPSK modulation scheme and that includes a reference signal based at least in part on the indication of the type of reference signal sequence;
• and
• demodulating the transmission based at least in part on the reference signal.

An apparatus for wireless communication at a user equipment (UE), comprising:

• a processor,
• memory coupled to the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• establish a connection with a base station that uses a π/2 binary phase shift keying (BPSK) modulation scheme for at least a portion of wireless communications with the base station;
• receive, from the base station, an indication of a type of reference signal sequence to be included within transmissions that use the π/2 BPSK modulation scheme;
• generate a reference signal based at least in part on the indication of the type of reference signal sequence;
• and
• transmit the reference signal within communications that use the π/2 BPSK modulation scheme.

An apparatus for wireless communication at a base station, comprising:

• a processor,
• memory coupled to the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• establish a connection with at least a first user equipment (UE) that uses a π/2 binary phase shift keying (BPSK) modulation scheme for at least a portion of wireless communications with the first UE;
• transmit an indication of a type of reference signal sequence to be included within transmissions of at least the first UE that use the π/2 BPSK modulation scheme;
• receive a transmission from at least the first UE that uses the π/2 BPSK modulation scheme and that includes a reference signal based at least in part on the indication of the type of reference signal sequence;
• and
• demodulate the transmission based at least in part on the reference signal.