Apparatus and method for encoding/decoding transport format combination indicator in CDMA mobile communication system
CAFCFirst Claim
1. A Transport Format Combination Indicator (TFCI) encoding apparatus in a CDMA mobile communication system, comprising:
 an orthogonal sequence generator for generating a plurality of basis biorthogonal sequences;
a mask sequence generator for generating a plurality of basis mask sequences; and
an operation unit for adding a basis biorthogonal sequence and a basis mask sequence selected among the basis biorthogonal sequences and the basis mask sequences according to TFCI bits.
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Abstract
An apparatus and method for encoding/decoding a transport format combination indicator (TFCI) in a CDMA mobile communication system. In the TFCI encoding apparatus, a onebit generator generates a sequence having the same symbols. A basis orthogonal sequence generator generates a plurality of basis orthogonal sequences. A basis mask sequence generator generates a plurality of basis mask sequences. An operation unit receives TFCI bits that are divided into a first information part representing biorthogonal sequence conversion, a second information part representing orthogonal sequence conversion, and a third information part representing mask sequence conversion and combines an orthogonal sequence selected from the basis orthogonal sequence based on the second information, a biorthogonal sequence obtained by combining the selected orthogonal sequence with the same symbols selected based on the first information part, and a mask sequence selected based on the biorthogonal sequence and the third information part, thereby generating a TFCI sequence.
19 Citations
88 Claims

1. A Transport Format Combination Indicator (TFCI) encoding apparatus in a CDMA mobile communication system, comprising:

an orthogonal sequence generator for generating a plurality of basis biorthogonal sequences; a mask sequence generator for generating a plurality of basis mask sequences; and an operation unit for adding a basis biorthogonal sequence and a basis mask sequence selected among the basis biorthogonal sequences and the basis mask sequences according to TFCI bits.  View Dependent Claims (2, 3, 4, 5, 6, 7, 67, 68)


8. An apparatus for encoding Transport Format Combination Indicator (TFCI) bits including first information bits and second information bits in a CDMA mobile communication system, comprising:

an orthogonal sequence generator for generating a plurality of biorthogonal sequences and outputting a biorthogonal sequence selected based on the first information bits among the plurality of biorthogonal sequences; a mask sequence generator for generating a plurality of mask sequences and outputting a mask sequence selected based on the second information bits among the plurality of mask sequences; and an adder for adding the biorthogonal sequence and the mask sequence received from the orthogonal sequence generator and the mask sequence generator.  View Dependent Claims (9, 69)


10. A Transport Format Combination Indicator (TFCI) encoding method in a CDMA mobile communication system, comprising the steps of:

generating, by an orthogonal generator, a plurality of basis biorthogonal sequences; generating a plurality of basis mask sequences; and generating a TFCI sequence by adding a basis biorthogonal sequence and a basis mask sequence selected among the basis biorthogonal sequences and the basis mask sequences according to TFCI bits.  View Dependent Claims (11, 12, 13, 14, 70, 71)


15. A method of encoding Transport Format Combination Indicator (TFCI) bits including first information bits and second information bits in a CDMA mobile communication system, comprising the steps of:

generating, by an orthogonal generator, a plurality of biorthogonal sequences and outputting a biorthogonal sequence selected based on the first information bits among the plurality of biorthogonal sequences; generating a plurality of mask sequences and outputting a mask sequence selected based on the second information bits among the plurality of mask sequences; and adding the selected biorthogonal sequence and the selected mask sequence.  View Dependent Claims (16, 17, 72)


18. A Transport Format Combination Indicator (TFCI) encoding method in a CDMA mobile communication system, comprising the steps of:

generating, by an orthogonal generator, an all “
1”
sequence;generating a plurality of basis orthogonal sequences; generating a plurality of basis mask sequences; receiving TFCI bits and multiplying the all “
1”
sequence by corresponding TFCI bits, the plurality of basis orthogonal sequences by corresponding TFCI bits, and the plurality of basis mask sequences by corresponding TFCI bits; andadding the multiplication results.  View Dependent Claims (19, 20, 21, 73, 74)


22. A Transport Format Combination Indicator (TFCI) decoding apparatus in a CDMA mobile communication system, comprising:

a mask sequence generator for generating at least one mask sequence; at least one operation circuit for receiving an input signal and the generated mask sequence and removing the mask sequences from the input signal by multiplying the mask sequence by the input signal; and at least one correlator for receiving the signal from the operation circuit, calculating correlation values of the received signal with a plurality of orthogonal sequences numbered with corresponding indexes, and selecting the largest of the calculated correlation values and an orthogonal sequence index corresponding to the largest correlation value.  View Dependent Claims (23, 24, 25, 26)


27. A Transport Format Combination Indicator (TFCI) decoding method in a CDMA mobile communication system, comprising the steps of:

generating, by a mask sequence generator, at least one mask sequence; receiving an input signal and the generated mask sequence and removing a mask sequence from the input signal by multiplying the generated mask sequence by the input signal; receiving a product signal, calculating correlation values of the product signal with a plurality of orthogonal sequences having corresponding indexes; and selecting the largest correlation value from the calculated correlation values and outputting an orthogonal sequence index corresponding to the largest correlation value.  View Dependent Claims (28, 29, 30)


31. A Transport Format Combination Indicator (TFCI) decoding method in a CDMA mobile communication system, comprising the steps of:

generating, by a mask sequence generator, a plurality of mask sequences; receiving an input signal and the generated mask sequences and removing a mask sequence from the input signal by multiplying the generated mask sequences by the input signal; receiving the product signals, calculating correlation values of each of the product signals with a plurality of orthogonal sequences having corresponding indexes, and selecting the largest correlation values and orthogonal sequence indexes corresponding to the largest correlation values; and determining a highest correlation value from the largest correlation values and outputting an orthogonal sequence index and a mask sequence index corresponding to the determined highest correlation value.  View Dependent Claims (32, 33)


34. A Transport Format Combination Indicator (TFCI) decoding method in a CDMA mobile communication system, comprising the steps of:

generating, by a mask sequence generator, a plurality of mask sequences; receiving an input signal and the generated mask sequences and multiplying each mask sequence by the input signal; receiving the multiplied signals and calculating correlation values of each of the received multiplied signals with a plurality of orthogonal sequences having corresponding indexes; selecting a largest correlation value among the calculated correlation values for each of the multiplied signals and an orthogonal sequence index corresponding to the largest correlation value; and determining a highest correlation value from all of the largest correlation values and an orthogonal code index corresponding to the highest correlation value.  View Dependent Claims (35, 66, 78)


36. A Transport Format Combination Indicator (TFCI) encoding apparatus in a CDMA mobile communication system, comprising:

a basis sequence generator for receiving TFCI information bits in a 10 bit unit and outputting at least one basis sequence selected based on the TFCI information bits from among all basis sequences available for encoding; and a codeword generator for combining at least two basis sequences output from the basis sequence generator and outputting a combined basis sequence, wherein the combined basis sequence is a codeword, and the at least one basis sequence and the codeword comprises 32 bits and all the basis sequences are mapped with the TFCI information bits in a 10 bit unit.  View Dependent Claims (37, 38, 39, 40, 41)


42. A Transport Format Combination Indicator (TFCI) encoding apparatus in a CDMA mobile communication system, comprising:

a basis sequence generator for receiving TFCI information bits in a 10 bit unit and outputting at least one basis sequence selected based on the TFCI information bits from among all basis sequences available for encoding; and a codeword generator for combining at least two basis sequences output from the basis sequence generator and outputting a combined basis sequence, wherein the combined basis sequence is a codeword, and the at least one basis sequence and the codeword comprises 30 bits and all the basis sequences are mapped with the TFCI information bits in a 10 bit unit.  View Dependent Claims (43, 44, 45)


46. A method for encoding a Transport Format Combination Indicator (TFCI) in a CDMA mobile communication system, comprising:

inputting TFCI information bits in a 10 bit unit; generating, by a codeword generator, a codeword containing 32 bits based on the TFCI information bits; and outputting the generated codeword, wherein the codeword is generated by combining at least two basis sequences selected by the TFCI information bits from among all basis sequences available for encoding and all the basis sequences are mapped with the TFCI information bits in a 10 bit unit.  View Dependent Claims (47, 48, 49, 50, 51)


52. A method for encoding a Transport Format Combination Indicator (TFCI) in a CDMA mobile communication system, comprising:

inputting TFCI information bits in a 10 bit unit; generating, by a codeword generator, a codeword containing 30 bits based on the TFCI information bits; and outputting the generated codeword, wherein the codeword is generated by combining at least two basis sequences selected by the TFCI information bits from among all basis sequences available for encoding and all the basis sequences are mapped with the TFCI information bits in a 10 bit unit.  View Dependent Claims (53, 54, 55)


56. A method for encoding a Transport Format Combination Indicator (TFCI) in a CDMA mobile communication system, comprising:

inputting TFCI information bits in a 10 bit unit; generating, by a codeword generator, a code word containing 32 bits based on the TFCI information bits; and outputting the generated code word, wherein if a TFCI information bit having a value of 1 is among the TFCI information bits, the generated codeword is generated by outputting a basis sequence corresponding to the bit having the value of 1 selected from among all basis sequences as the codeword, and if there are more than one TFCI information bits having a value of 1, the generated codeword is generated by adding bits of a plurality of basis sequences corresponding to bits having the value of 1 and outputting one of the added basis sequences as the codeword.  View Dependent Claims (57, 58, 59, 60)


61. A method for encoding a Transport Format Combination Indicator (TFCI) in a CDMA mobile communication system, comprising:

inputting TFCI information bits in a 10 bit unit; generating, by a codeword generator, a code word containing 30 bits based on the TFCI information bits; and outputting the generated code word, wherein if a TFCI information bit having a value of 1 is among the TFCI information bits, the codeword is generated by outputting a basis sequence corresponding to the bit having the value of 1 selected from among all basis sequences as the codeword, and if there are more than one TFCI information bits having a value of 1, the codeword is generated by adding bits of a plurality of basis sequences corresponding to bits having the value of 1 and outputting one of the added basis sequences as the codeword.  View Dependent Claims (62, 63, 64, 65)


75. A Transport Format Combination Indicator (TFCI) encoding apparatus in a COMA mobile communication system, comprising:

a controller for outputting a 30 bit codeword from among a plurality of 30 bit codewords that corresponds to a 10 bit TFCI information input to the controller from a plurality of possible 10 bit TFCI information, wherein the 30 bit codeword output by the controller is equivalent to a 32 bit codeword that corresponds to the 10 bit TFCI information input to the controller.  View Dependent Claims (76, 77, 85, 86)


79. A method for encoding a Transport Format Combination Indicator (TFCI) in a CDMA mobile communication system, comprising:

inputting a TFCI information into a controller; outputting, via the controller, a 32 bit codeword from among a plurality of 32 bit codewords that corresponds to a 10 bit TFCI information input to the controller from a plurality of possible 10 bit TFCI information; puncturing, via a puncturer, two bits from the 32 bit codeword, each of the two bits being punctured at a predetermined position; and outputting a 30 bit codeword that is equivalent to the outputted 32 bit codeword.  View Dependent Claims (80, 81, 87)


82. A Transport Format Combination Indicator (TFCI) encoding apparatus in a CDMA mobile communication system, comprising:

a controller for outputting a 32 bit codeword from among a plurality of 32 bit codewords that corresponds to a 10 bit TFCI information input to the controller from a plurality of possible 10 bit TFCI information; and a puncturer for puncturing two bits from the 32 bit codeword output by the controller, each of the two bits being punctured at a predetermined position, and outputting a 30 bit codeword that is equivalent to the 32 bit codeword output by the controller.  View Dependent Claims (83, 84, 88)

1 Specification