Apparatus and method for transmitting TFCI bits for a hard split mode in a CDMA mobile communication system

An apparatus for encoding two TFCI (Transport Format Combination Indicator) separated into k bits and (10-k) bits in a mobile communication system, the apparatus comprising:

• an encoder for generating a first coded bit stream by encoding the k input bits into 32 bits, and outputting a (3k+1)-bit stream by puncturing the first coded bit according to a specific mask pattern corresponding to the k;
• and
• an encoder for generating a second coded bit by encoding the (10-k) input bits into 32 bits, and outputting a {3*(10-k)+1}-bit by puncturing the second coded bit according to a specific mask pattern corresponding to of the (10-k).

An apparatus for decoding k first TFCI bits and (10-k) second TFCI bits in a reception apparatus for a mobile communication system for receiving a (3k+1) first TFCI bits for a DCH (Dedicated Channel) and a {3*(10-k)+1} second TFCI bits for a DSCH (Downlink Shared Channel), the apparatus comprising:

• a decoder for outputting a 32-bit stream by inserting 0's in the (3k+1) first TFCI bits according to a specific mask pattern corresponding to a value of k, and decoding the k first TFCI bits from the 32-bit stream;
• and
• a decoder for outputting a 32-bit stream by inserting 0's in the {3*(10-k)+1} second TFCI bits according to a specific mask pattern corresponding to a value of (10-k), and decoding the (10-k) second TFCI bits from the 32-bit stream.

An encoding method for a first encoder and a second encoder in a transmission apparatus for a mobile communication system including the first encoder for encoding k bits among 10 input TFCI bits and the second encoder for encoding remaining (10-k) bits among the input TFCI bits, comprising the steps of:

• generating, by the first encoder, a first coded bit stream by encoding the k input bits into 32 bits, and outputting a 3k-bit stream by puncturing the first coded bit stream according to a specific mask pattern corresponding to a value of k;
• and
• generating, by the second encoder, a second coded bit stream by encoding the (10-k) input bits into 32 bits, and outputting a {3*(10-k)+2}-bit stream by puncturing the second coded bit stream according to a specific mask pattern corresponding to a value of (10-k).

An apparatus for encoding two TFCI (Transport Format Combination Indicator) bit streams separated into k bits and (10-k) bits according to an information bit ratio of 10 input TFCI bits in a mobile communication system, the apparatus comprising:

• a first encoder for generating a first coded bit stream by encoding the k input bits into 32 bits, and outputting a 3k-bit stream by puncturing the first coded bit stream according to a specific mask pattern corresponding to a value of k;
• and
• a second encoder for generating a second coded bit stream by encoding the (10-k) input bits into 32 bits, and outputting a {3*(10-k)+2}-bit stream by puncturing the second coded bit stream according to a specific mask pattern corresponding to a value of (10-k).

A method for decoding k first TFCI bits and (10-k) second TFCI bits in a reception apparatus for a mobile communication system for receiving a stream of 3k first TFCI bits for a DCH (Dedicated Channel) and a stream of {3*(10-k)+2} second TFCI bits for a DSCH (Downlink Shared Channel), transmitted over a DPCH (Dedicated Physical Channel) from a transmission apparatus in an information bit ratio of 3k bits to {3*(10-k)+2} bits after being multiplexed, comprising the steps of:

• outputting a 32-bit stream by inserting 0's in the stream of the 3k first TFCI bits according to a specific mask pattern corresponding to a value of k, and decoding the k first TFCI bits from the 32-bit stream;
• and
• outputting a 32-bit stream by inserting 0's in the stream of the {3*(10-k)+2} second TFCI bits according to a specific mask pattern corresponding to a value of (10-k), and decoding the (10-k) second TFCI bits from the 32-bit stream.

An apparatus for decoding k first TFCI bits and (10-k) second TFCI bits in a reception apparatus for a mobile communication system for receiving a stream of 3k first TFCI bits for a DCH (Dedicated Channel) and a stream of {3*(10-k)+2} second TFCI bits for a DSCH (Downlink Shared Channel), transmitted over a DPCH (Dedicated Physical Channel) from a transmission apparatus in an information bit ratio of 3k bits to {3*(10-k)+2} bits after being multiplexed, the apparatus comprising:

• a first decoder for outputting a 32-bit stream by inserting 0's in the stream of the 3k first TFCI bits according to a specific mask pattern corresponding to a value of k, and decoding the k first TFCI bits from the 32-bit stream;
• and
• a second decoder for outputting a 32-bit stream by inserting 0's in the stream of the {3*(10-k)+2} second TFCI bits according to a specific mask pattern corresponding to a value of (10-k), and decoding the (10-k) second TFCI bits from the 32-bit stream.