Feedback information sending apparatus and method, and feedback information receiving apparatus and method

A communication device, comprising:

• a processor, a memory, and a transceiver, wherein the memory is configured to store at least one instruction, when executed by the processor, causing the processor to:
• determine an uplink shared resource of the communication device;
• control the transceiver to send uplink data by using the uplink shared resource, wherein the uplink data comprises an identifier of the device;
• and
• control the transceiver to receive feedback information by using a Media Access Control protocol data unit (MAC PDU), wherein the feedback information comprises n identifiers, different identifiers in the n identifiers represent different devices, the identifiers indicate that uplink data of the n devices is successfully received by a base station, and n is a positive integer, wherein:
• the processor is further configured to read a quantity of significant bits and a bit mapping sequence from the feedback information, wherein the quantity of significant bits is used to indicate a quantity of significant bits in the bit mapping sequence, and the bit mapping sequence is a bit sequence with a fixed bit quantity;
• the processor is further configured to:
• when the ith bit in the bit mapping sequence is a first value and is significant, read the ith identifier and a corresponding uplink scheduling grant from the feedback information;
• the processor is further configured to detect whether the ith identifier is the identifier of the device;
• the processor is further configured to:
• when the ith identifier is the identifier of the device, control the transceiver to send the remaining to-be-sent data according to the uplink scheduling grant;
• the processor is further configured to:
• when the ith bit in the bit mapping sequence is a second value and is significant, read the ith identifier from the feedback information;
• and
• the processor is further configured to detect whether the ith identifier is the identifier of the device, wherein if the ith identifier of device is the identifier of the device, it indicates that the base station successfully receives the uplink data of the device.

A feedback information sending method, wherein the method comprises:

• allocating a same uplink shared resource to m user equipments (UEs), wherein m is a positive integer greater than 1;
• receiving uplink data on the uplink shared resource, wherein the uplink data comprises a UE identifier, identifiers of different UEs represent the different UEs, and the UE represented by the identifier of the UE is at least one of the m UEs;
• determining n UEs, wherein uplink data of the n UEs is successfully received, wherein n is a positive integer and m is greater than or equal to n;
• generating feedback information, wherein the feedback information comprises n identifiers, and different identifiers represent different UEs;
• and
• sending the feedback information by using a Media Access Control protocol data unit (MAC PDU),
• wherein the sending the feedback information by using a MAC PDU comprises:
• generating the MAC PDU corresponding to the UE, wherein the MAC PDU comprises the feedback information;
• scrambling control channel indication information by using a designated identifier, wherein the designated identifier is an identifier corresponding to the m UEs, and the control channel indication information is used to indicate a resource location of a downlink resource that carries the MAC PDU;
• sending the control channel indication information to the UE;
• and
• sending the MAC PDU by using the downlink resource indicated by the control channel indication information.