Method and apparatus for allocating HARQ-ACK channel resources supporting transmit diversity and channel selection

A method for receiving hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information by a base station (BS) in a wireless communication system, comprising:

• receiving HARQ-ACK feedback information based on HARQ-ACK bits from a user equipment (UE),
• wherein the HARQ-ACK feedback information is transmitted from the UE using a part or all of uplink resources determined associated with the HARQ-ACK bits through at least two antenna ports of the UE, the uplink resources being mapped to the at least two antenna ports, respectively,
• wherein the same HARQ-ACK feedback information is transmitted through the at least two antenna ports,
• wherein a number of the HARQ-ACK bits is determined based on a number of serving cells for the UE and a transmission mode for each of the serving cells, the transmission mode including one of a first transmission mode that supports one transport block and a second transmission mode that supports up to two transport blocks, and
• wherein a HARQ-ACK bit included in the HARQ-ACK bits represents a response for a transport block associated with one of the serving cells.

A user equipment (UE) in a wireless communication system, comprising:

• a transceiver;
• and
• at least one processor configured to:
• determine a number of hybrid automatic repeat request acknowledgement (HARQ-ACK) bits based on a number of serving cells and a downlink transmission mode for each of the serving cells, the downlink transmission mode including one of a first transmission mode that supports one transport block and a second transmission mode that supports up to two transport blocks,
• determine uplink resources associated with the HARQ-ACK bits, and
• control the transceiver to perform a HARQ-ACK transmission based on the HARQ-ACK bits using a part or all of the determined uplink resources through at least two antenna ports, the determined uplink resources being mapped to the at least two antenna ports, respectively,
• wherein the at least one processor is further configured to control the transceiver to transmit the same HARQ-ACK feedback information through the at least two antenna ports, and
• wherein a HARQ-ACK bit included in the HARQ-ACK bits represents a response for a transport block associated with one of the serving cells.

A base station (BS) in a wireless communication system, comprising:

• a transceiver;
• and
• at least one processor configured to control the transceiver to receive hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information based on HARQ-ACK bits from a user equipment (UE),
• wherein the HARQ-ACK feedback information is transmitted from the UE using a part or all of uplink resources determined associated with the HARQ-ACK bits through at least two antenna ports of the UE, the uplink resources being mapped to the at least two antenna ports, respectively,
• wherein the same HARQ-ACK feedback information is transmitted through the at least two antenna ports,
• wherein a number of the HARQ-ACK bits is determined based on a number of serving cells for the UE and a transmission mode for each of the serving cells, the transmission mode including one of a first transmission mode that supports one transport block and a second transmission mode that supports up to two transport blocks, and
• wherein an HARQ-ACK bit included in the HARQ-ACK bits represents a response for a transport block associated with one of the serving cells.