Indication information transmission method and apparatus

An indication information transmission apparatus, comprising:

• a processor, a memory, a bus system, a receiver, and a transmitter, wherein the processor, the memory, the receiver, and the transmitter are connected by using the bus system, the memory is configured to store an instruction, and the processor is configured to execute the instruction stored in the memory, to control the receiver to receive a signal and to control the transmitter to transmit a signal;
• wherein the receiver is configured to:
• receive indication information transmitted by a network device, wherein the indication information is used to indicate a first signature sequence and a first modulation constellation that are used to transmit an uplink data stream, each signature sequence is a multi-dimensional complex-number vector comprising at least one zero element and at least one non-zero element, and the signature sequence is used to perform amplitude and phase adjustment on a modulation symbol obtained after a terminal device performs constellation mapping on the uplink data stream by using a modulation constellation;
• wherein the processor is configured to:
• determine the first signature sequence and the first modulation constellation according to the indication information;
• and
• wherein the transmitter is configured to:
• transmit the uplink data stream according to the first signature sequence and the first modulation constellation.