US 2015/0146643 A1 · METHOD AND APPARATUS FOR SENDING AND RECEIVING HARQ-ACK FEEDBACK INFORMATION

Abstract

A method and an apparatus for sending Hybrid Automatic Repeat Request acknowledgement (HARQ-ACK) feedback information are provided. The User Equipment (UE) receives a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH) sent by a base station, determines a number of downlink subframes corresponding to the HARQ-ACK feedback information sent in the PUSCH of each CC in the current uplink subframe, the Uplink (UL) Downlink Assignment Index (UL DAI) obtained from the UL Grant of the PDCCH, a sum of the number of PDSCH subframes received from a HARQ-ACK bundling window and a number of PDCCHs indicating the downlink SPS releasing, and a size of the HARQ-ACK bundling window, and sends HARQ-ACK feedback information of each CC via the PUSCH in the current uplink subframe. A number of bits of the HARQ-ACK feedback information of each CC is determined according to the number of the downlink subframes.

Claims41

Dependent claims

1-10. (canceled)

A method for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information, the method comprising:

determining, by an user equipment (UE), a number of subframes for HARQ-ACK feedback based on an uplink (UL) downlink assignment index (UL DAI);
determining a number of HARQ-ACK feedback bits based on the number of subframes and a transmission mode;
generating HARQ-ACK feedback information based on the number of HARQ-ACK feedback bits;
and
transmitting, by the UE, the HARQ-ACK feedback information.

2 more elements

An apparatus of an user equipment (UE) for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information, the apparatus comprising:

a controller configured to determine a number of subframes for HARQ-ACK feedback based on an uplink (UL) downlink assignment index (UL DAI), determine a number of HARQ-ACK feedback bits based on the number of subframes and a transmission mode, and generate HARQ-ACK feedback information based on the number of HARQ-ACK feedback bits;
and
a transmitter configured to transmit the HARQ-ACK feedback information.

A method for receiving hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information, the method comprising:

determining, by a base station (BS), a number of subframes for HARQ-ACK feedback based on an uplink (UL) downlink assignment index (UL DAI);
and
receiving, by the BS, HARQ-ACK feedback information from an user equipment (UE),
wherein a number of HARQ-ACK feedback bits of the HARQ-ACK feedback information is determined according to the number of the subframes.

1 more element

An apparatus of a base station (BS) for receiving hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information, the apparatus comprising:

a controller configured to determine a number of subframes for HARQ-ACK feedback based on an uplink (UL) downlink assignment index (UL DAI);
and
an uplink receiver configured to receive HARQ-ACK feedback information from an user equipment (UE),
wherein a number of HARQ-ACK feedback bits of the HARQ-ACK feedback information is determined according to the number of the subframes.

1 more element

Dependencies are inferred from the claim text.

Method and apparatus for sending and receiving harq-ack feedback information

Life of this patent

Method and apparatus for sending and receiving harq-ack feedback information

Life of this patent

Abstract

Claims41