Apparatus and method for feeding back data receiving status

A method for operating a base station, the method comprising:

• receiving, from a user equipment (UE), a combination of bits on an uplink channel resource;
• and
• determining a data receiving status of the UE for a plurality of subframes based on the combination of bits and the uplink channel resource,
• wherein the uplink channel resource is identified among a plurality of uplink resources determined based on downlink assignment index (DAI) values for the plurality of subframes, and
• wherein the combination of bits is identified among a plurality of combinations of bits based on the data receiving status.

An apparatus of a user equipment (UE), the apparatus comprising:

• at least one processor configured to:
• identify a data receiving status of downlink data for a plurality of subframes,
• identify an uplink channel resource, among a plurality of uplink resources determined based on downlink assignment index (DAI) values for a the plurality of subframes,
• identify a combination of bits among a plurality of combinations of bits based on the data receiving status, and
• at least one transceiver, operatively coupled to the at least one processor, configured to:
• transmit, on an uplink channel resource, the combination of bits for indicating a data receiving status for the plurality of subframes.

An apparatus of a base station, the apparatus comprising:

• at least one transceiver configured to receive, from a user equipment (UE), a combination of bits on an uplink channel resource;
• and
• at least one processor, operatively coupled to the at least one transceiver, configured to determine a data receiving status of the UE for a plurality of subframes based on the combination of bits and the uplink channel resource,
• wherein the uplink channel resource is identified among a plurality of uplink resources determined based on downlink assignment index (DAI) values for the plurality of subframes, and
• wherein the combination of bits is identified among a plurality of combinations of bits based on the data receiving status.