Referring to FIG. 29 and FIG. 27, FIG. 31 shows an uplink information sending apparatus 3100 according to an embodiment of the present invention. The uplink information sending apparatus 3100 includes: an obtaining module 3101, configured to obtain downlink scheduling DCI and downlink data, and located in a baseband processor Y01; and a sending module 3102, configured to send first uplink information according to an indication in the indication information, and located in a wireless transceiver Y02. For a specific function of each module in the apparatus corresponding to FIG. 31, refer to descriptions in the foregoing method embodiments.
Referring to FIG. 30, FIG. 32 shows a system scheduling apparatus EE00 according to an embodiment of the present invention. The system scheduling apparatus EE00 includes: a determining module 3201, configured to determine downlink scheduling DCI and downlink data of user equipment; and a sending module 3202, configured to send the downlink scheduling DCI and the downlink data to the user equipment.
In the embodiments corresponding to FIG. 29 to FIG. 32 in the present embodiments, indication information in downlink scheduling DCI is used to instruct user equipment to send first uplink information, so that a base station in a narrowband communications system can flexibly schedule multiple user equipments to send without mutual interference an ACK or NACK on a frequency resource, and system bandwidth use efficiency is also improved.
