A transmission control method includes generating, by a first device, transmission control information, and sending the transmission control information to the second device. The transmission control information includes resource indication information, compression indication, and first indication. The resource indication information indicates a transmission resource allocated by the first device to a second device. The transmission resource includes at least two symbols. The compression indication indicates a numerology of a specific symbol in the transmission resource. The specific symbol includes at least an end symbol or a second symbol. The end symbol is the last symbol in the transmission resource. The second symbol is a symbol in the transmission resource and is used for transmitting only a demodulation reference signal or a long training field. The second symbol includes at least one symbol. The first indication indicates a numerology of a symbol in the transmission resource other than the specific symbol.