Method and apparatus for generating spreading sequence codebooks

A method performed by a wireless communication node, comprising:

• selecting a first number for a wireless communication device;
• and
• transmitting the first number to the wireless communication device;
• wherein the first number is used by the wireless communication device to determine a first spreading sequence codebook from at least one spreading sequence codebook, to further select a first spreading sequence from the first spreading sequence codebook, and to further spread data symbols according to the first spreading sequence,
• wherein the at least one spreading sequence codebook each comprises a plurality of spreading sequences configured based on one entry of a first sequence set after cyclic shifting operation, wherein the first sequence set before cyclic shifting operation is configured based on a second sequence set, wherein the second sequence set comprises at least one of the following,
• a third entry comprising {0, 2, 6, 7, 8, 10}, a fifth entry comprising {3, 6, 7, 9,11, 13, 13,1.4 a sixth entry comprising {0, 1, 7, 9, 23, 44, 47, 49} and a seventh entry comprising {1, 8, 9,11, 25, 37, 69, 88, 94, 99, 103, 121),
• wherein the first sequence set before cyclic shifting can be determined by taking a modN to a third sequence set, wherein the third sequence set is obtained by multiplying each element in [1:N] with each entry of the second sequence set, wherein N is a total number of spreading sequences in one of the at least one spreading sequence codebook.

A wireless communications apparatus comprising a processor, wherein the processor is configured to:

• receive, via a receiver, a first number from a wireless communication node;
• select a first spreading sequence codebook from at least one spreading sequence codebook;
• select a first spreading sequence from the first spreading sequence codebook according to the first number;
• and
• spread data symbols according to the first spreading sequence,
• wherein the at least one spreading sequence codebook each comprises a plurality of spreading sequences configured based on one entry of a first sequence set after cyclic shifting operation, wherein the first sequence set before cyclic shifting operation is configured based on a second sequence set, wherein the second sequence set comprises at least one of the following, a third entry comprising {0, 2, 6, 7, 8, 10}, a fifth entry comprising {3, 6, 7, 9, 11, 12, 13, 14}, a sixth entry comprising {0, 1, 7, 9, 23, 44, 47, 49} and a seventh entry comprising {1, 8, 9, 11, 25, 37, 69, 88, 94, 99, 103, 121},
• wherein the first sequence set before cyclic shifting can be determined by taking a modN to a third sequence set, wherein the third sequence set is obtained by multiplying each element in [1:N] with each entry of the second sequence set, wherein N is a total number of spreading sequences in one of the at least one spreading sequence codebook.

A non-transitory computer-readable medium having stored thereon computer-executable instructions, that, when executed by a processor, cause the processor to:

• receive, via a receiver, a first number from a wireless communication node;
• select a first spreading sequence codebook from at least one spreading sequence codebook;
• select a first spreading sequence from the first spreading sequence codebook according to the first number;
• and
• spread data symbols according to the first spreading sequence,
• wherein the at least one spreading sequence codebook each comprises a plurality of spreading sequences configured based on one entry of a first sequence set after cyclic shifting operation, wherein the first sequence set before cyclic shifting operation is configured based on a second sequence set, wherein the second sequence set comprises at least one of the following, a third entry comprising {0, 2, 6, 7, 8, 10}, a fifth entry comprising {3, 6, 7, 9, 11, 12, 13, 14}, a sixth entry comprising {0, 1, 7, 9, 23, 44, 47, 49} and a seventh entry comprising {1, 8, 9, 11, 25, 37, 69, 88, 94, 99, 103, 121},
• wherein the first sequence set before cyclic shifting can be determined by taking a modN to a third sequence set, wherein the third sequence set is obtained by multiplying each element in [1:N] with each entry of the second sequence set, wherein N is a total number of spreading sequences in one of the at least one spreading sequence codebook.