Hybrid automatic repeat request operation and decoding status signaling for uplink multiple-input multiple-output

An apparatus for wireless communication, comprising:

• a receiving module for receiving a plurality of codewords of a multiple codeword uplink transmission from a user equipment (UE);
• a decoding module for determining decoding statuses for each of the plurality of codewords;
• a resource mapping component for selecting a resource element map from a plurality of resource element maps based at least in part on the decoding statuses for the plurality of codewords, and mapping one or more channels to one or more resource elements defined by the selected resource element map;
• and
• a transmitting module for sending the decoding statuses for the plurality of codewords to the UE over the one or more channels, wherein the decoding statuses for the plurality of codewords are conveyed as a combination of both one or more decoding status indicators and a location of the one or more resource elements to which the one or more channels is mapped.

An apparatus for wireless communication, comprising:

• means for receiving a plurality of codewords of a multiple codeword uplink transmission from a user equipment (UE);
• means for determining decoding statuses for each of the plurality of codewords;
• means for selecting a resource element map from a plurality of resource element maps based at least in part on the decoding statuses for the plurality of codewords;
• means for mapping one or more channels to one or more resource elements defined by the selected resource element map;
• and
• means for sending the decoding statuses for the plurality of codewords to the UE over the one or more channels, wherein the decoding statuses for the plurality of codewords are conveyed as a combination of both one or more decoding status indicators and a location of the one or more resource elements to which the one or more channels is mapped.

A non-transitory computer-readable medium storing computer-executable code for wireless communications, the code executable by a processor to:

• receive a plurality of codewords of a multiple codeword uplink transmission from a user equipment (UE);
• determine decoding statuses for each of the plurality of codewords;
• select a resource element map from a plurality of resource element maps based at least in part on the decoding statuses for the plurality of codewords;
• map one or more channels to one or more resource elements defined by the selected resource element map;
• and
• signal the decoding statuses for the plurality of codewords to the UE over the one or more channels, wherein the decoding statuses for the plurality of codewords are conveyed as a combination of both one or more decoding status indicators and a location of the one or more resource elements to which the one or more channels is mapped.

An apparatus for wireless communication, comprising:

• a transmitting module for sending a plurality of codewords as part of an uplink multiple-input multiple-output (MIMO) transmission to a base station;
• a receiving module for receiving decoding statuses for each of the plurality of codewords conveyed as a combination of both one or more decoding status indicators and a location of one or more resource elements to which one or more channels is mapped from the base station over the one or more channels, wherein the one or more channels are mapped to the one or more resource elements according to a resource element map, wherein the resource element map is selected from among a plurality of resource element maps based at least in part on the decoding statuses;
• and
• a detecting module for detecting the decoding statuses for each of the plurality of codewords.