User equipment, access network device, and feedback information sending and receiving methods

An access network device, comprising:

• a transmitter, configured to:
• under control of a processor, send downlink control information to user equipment (UE), and send a data channel scheduled by using the downlink control information to the UE;
• the processor, configured to:
• control the transmitter to send the downlink control information to the UE, control the transmitter to send the data channel scheduled by using the downlink control information to the UE, determine an uplink subframe used for receiving feedback information corresponding to the data channel, and determine a channel resource, wherein a first downlink subframe set associated with the uplink subframe comprises a first subset and a second subset, the first subset comprises at least two downlink subframes, wherein the first subset is a proper subset of the second subset or the first subset partly overlaps the second subset;
• and wherein the channel resource is a first uplink channel resource or a second uplink channel resource, the first uplink channel resource corresponds to the first subset, and the second uplink channel resource corresponds to the second subset;
• and
• a receiver, configured to:
• receive, on the channel resource in the uplink subframe, the feedback information sent by using a channel format, and the channel resource is determined by the processor;
• wherein the channel format is a p codebook size channel format, using which the UE sending the feedback information on the first uplink channel resource, or the channel format is a q codebook size channel format, using which the UE sending the feedback information on the second uplink channel resource and p and q are natural numbers, and q>p.

A feedback information sending method, comprising:

• receiving, by user equipment (UE), downlink control information sent by an access network device;
• receiving, by the UE, a data channel scheduled by using the downlink control information;
• determining, by the UE, an uplink subframe used for sending feedback information corresponding to the data channel, wherein a first downlink subframe set associated with the uplink subframe comprises a first subset and a second subset, the first subset comprises at least two downlink subframes, and the first subset is a proper subset of the second subset or the first subset partly overlaps the second subset;
• determining, by the UE, a channel resource, wherein the channel resource is a first uplink channel resource or a second uplink channel resource, the first uplink channel resource corresponds to the first subset, and the second uplink channel resource corresponds to the second subset;
• and
• sending, by the UE, the feedback information on the channel resource in the uplink subframe by using a channel format, wherein the channel format is a p codebook size channel format, using which the UE sends the feedback information on the first uplink channel resource, or the channel format is a q codebook size channel format, using which the UE sends the feedback information on the second uplink channel resource, and p and q are natural numbers and q>p.