Interference randomization in orthogonal cover codes

An apparatus configured for wireless communications, comprising:

• one or more memories comprising processor-executable instructions;
• and one or more processors configured to execute the processor-executable instructions and cause the apparatus to:
• obtain a first transmission comprising signals corresponding to data encoded with a first OCC codeword during a first transmission time interval within a first predefined transmission timeframe, the first transmission from a first user equipment;
• select, from a plurality of pseudo-random codeword allocator functions, a first pseudo-random codeword allocator function corresponding to the first transmission time interval;
• select the first OCC codeword from an OCC matrix corresponding to the first user equipment and based on the first pseudo-random codeword allocator function;
• decode the first transmission with the first OCC codeword corresponding to the first user equipment;
• obtain a second transmission comprising signals corresponding to data encoded with a second OCC codeword during a second transmission time interval within a second predefined transmission timeframe, the second transmission from the first user equipment;
• select, from the plurality of pseudo-random codeword allocator functions, a second pseudo-random codeword allocator function corresponding to the second transmission time interval, wherein the first pseudo-random codeword allocator function and the second pseudo-random codeword allocator function are different pseudo-random codeword allocator functions;
• select the second OCC codeword from the OCC matrix corresponding to the first user equipment and based on the second pseudo-random codeword allocator function;
• and
• decode the second transmission with the second OCC codeword.

A method for wireless communications by an apparatus, comprising:

• selecting a first orthogonal cover code (OCC) codeword from an OCC matrix for a transmission occurring during a first transmission time interval based on a first pseudo-random codeword allocator function corresponding to the first transmission time interval;
• encoding the transmission, comprising signals corresponding to data, using the first OCC codeword;
• sending the transmission during the first transmission time interval using the first OCC codeword;
• selecting a second OCC codeword from the OCC matrix for a second transmission occurring during a subsequent transmission time interval based on a second pseudo-random codeword allocator function, wherein the second pseudo-random codeword allocator function corresponds to the subsequent transmission time interval and the first pseudo-random codeword allocator function and the second pseudo-random codeword allocator function are different pseudo-random codeword allocator functions;
• and
• sending the second transmission during the subsequent transmission time interval using the second OCC codeword.

A method for wireless communications by an apparatus, comprising:

• obtaining a first transmission comprising signals corresponding to data encoded with a first OCC codeword during a first transmission time interval within a first predefined transmission timeframe, the first transmission from a first user equipment;
• selecting, from a plurality of pseudo-random codeword allocator functions, a first pseudo-random codeword allocator function corresponding to the first transmission time interval;
• selecting the first OCC codeword from an OCC matrix corresponding to the first user equipment and based on the first pseudo-random codeword allocator function;
• decoding the first transmission with the first OCC codeword corresponding to the first user equipment;
• obtaining a second transmission comprising signals corresponding to data encoded with a second OCC codeword during a second transmission time interval within a second predefined transmission timeframe, the second transmission from the first user equipment;
• selecting, from the plurality of pseudo-random codeword allocator functions, a second pseudo-random codeword allocator function corresponding to the second transmission time interval, wherein the first pseudo-random codeword allocator function and the second pseudo-random codeword allocator function are different pseudo-random codeword allocator functions;
• selecting the second OCC codeword from the OCC matrix corresponding to the first user equipment and based on the second pseudo-random codeword allocator function;
• and
• decoding the second transmission with the second OCC codeword.