Coding block based harq combining scheme for ofdma systems

An apparatus for wireless communication with a hybrid automatic repeat-request (HARQ) mechanism, comprising:

• means for storing data for a previously received HARQ transmission divided into a plurality of coding blocks and having an incorrect decoded message, the data for each of the plurality of coding blocks being HARQ combined signal data or decoded data;
• first means for generating the HARQ combined signal data for each coding block at a first location along a reception processing path, the HARQ combined signal data based on signal data for a current HARQ transmission and signal data for the previously received HARQ transmission;
• means for producing the decoded data for each coding block based on the HARQ combined signal data;
• and
• means for selecting between storing the HARQ combined signal data or the decoded data for each coding block to the means for storing data based on a selection criterion.

A processor for wireless communication with a hybrid automatic repeat-request (HARQ) mechanism, the processor executing operations comprising:

• receiving a current HARQ transmission having a plurality of coding blocks;
• generating HARQ combined signal data for each coding block based on signal data for the current HARQ transmission and signal data for a previously received HARQ transmission having an incorrect decoded message;
• decoding the HARQ combined signal data for each coding block;
• and
• for each coding block, saving either the HARQ combined signal data or the decoded data based on a selection criterion.

A computer-program product for processing data for wireless communication with a hybrid automatic repeat-request (HARQ) mechanism comprising a computer readable medium having a set of instructions stored thereon, the set of instructions being executable by one or more processors and the set of instructions comprising:

• instructions for storing data for a previously received HARQ transmission divided into a plurality of coding blocks and having an incorrect decoded message, the data for each of the plurality of coding blocks being HARQ combined signal data or decoded data;
• first instructions for generating the HARQ combined signal data for each coding block at a first location along a reception processing path, the HARQ combined signal data based on signal data for a current HARQ transmission and signal data for the previously received HARQ transmission;
• instructions for producing the decoded data for each coding block based on the HARQ combined signal data;
• and
• instructions for selecting between storing the HARQ combined signal data or the decoded data for each coding block to the instructions for storing data based on a selection criterion.

A mobile device, comprising:

• a receiver front end for receiving a current hybrid automatic repeat-request (HARQ) transmission;
• at least one buffer for storing data for a previously received HARQ transmission divided into a plurality of coding blocks and having an incorrect decoded message, the data for each of the plurality of coding blocks being HARQ combined signal data or decoded bits;
• at least one combiner configured to generate the HARQ combined signal data for each coding block based on signal data for the current and the previously received HARQ transmissions;
• a decoder configured to produce the decoded bits for each coding block based on the HARQ combined signal data;
• and
• control logic configured to select between saving the HARQ combined signal data or the decoded bits for each coding block to the at least one buffer based on a selection criterion.

A method for interpreting hybrid automatic repeat-request (HARQ) transmissions in a wireless communication system, the method comprising:

• receiving a current HARQ transmission having a plurality of coding blocks;
• generating HARQ combined signal data for each coding block based on signal data for the current HARQ transmission and signal data for a previously received HARQ transmission having an incorrect decoded message;
• decoding the HARQ combined signal data for each coding block;
• and
• for each coding block, saving either the HARQ combined signal data or the decoded data based on a selection criterion.