Time domain orthogonal base sequence based PUCCH transmission

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

• one or more memories;
• and
• one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to:
• identify a set of orthogonal sequences for conveying a payload comprising a plurality of bits, wherein the set of orthogonal sequences are generated based at least in part on a set of orthogonal sequences prior to transform precoding for transmission;
• determine a subset of the set of orthogonal sequences for conveying the payload, wherein a size of the subset of the set of orthogonal sequences is based at least in part on a number of the plurality of bits;
• and
• receive, from a user equipment (UE), a selected sequence from the subset of the set of orthogonal sequences, wherein the selected sequence is based at least in part on a mapping between the subset of the set of orthogonal sequences and the plurality of bits.

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

• identifying a set of orthogonal sequences for conveying a payload comprising a plurality of bits, wherein the set of orthogonal sequences are generated based at least in part on a plurality of orthogonal sequences prior to transform precoding for transmission;
• selecting a subset of the set of orthogonal sequences for conveying the payload, wherein a size of the subset of the set of orthogonal sequences for conveying the payload is based at least in part on a number of the plurality of bits;
• selecting a sequence from the subset of the set of orthogonal sequences for conveying the payload based at least in part on a mapping between the subset of the set of orthogonal sequences for conveying the payload and the plurality of bits;
• and
• transmitting the selected sequence.

A method of wireless communication performed by a base station, comprising:

• identifying a set of orthogonal sequences for conveying a payload comprising a plurality of bits, wherein the set of orthogonal sequences are generated based at least in part on a plurality of orthogonal sequences prior to transform precoding for transmission;
• determining a subset of the set of orthogonal sequences for conveying the payload, wherein a size of the subset of the plurality of orthogonal sequences is based at least in part on a number of the plurality of bits;
• and
• receiving, from a user equipment (UE), a selected sequence from the subset of the plurality of orthogonal sequences, wherein the selected sequence is based at least in part on a mapping between the subset of the plurality of orthogonal sequences and the plurality of bits.