Information indication method and apparatus
Embodiments of this application relate to the communications field, and in particular, to an information indication method and apparatus in the communications field. The embodiments of this application include: generating a PPDU including radar indication information, where the radar indication information is used to indicate that the PPDU is a PPDU used for radar testing, and transmitting the PPDU. According to the method provided in the embodiments of this application, the transmit end explicitly indicates that the PPDU is a PPDU used for radar testing rather than a PPDU used for communication between communications devices. When a receive end receives the PPDU, the receive end no longer monitors a channel, thereby reducing power consumption of the receive end.
1. An information indication method, comprising:
generating, by a transmit end, a Physical Layer Convergence Protocol Data Unit (PPDU) including radar indication information, wherein the radar indication information is configured to indicate that the PPDU is used for radar testing, the radar indication information is located at a MAC layer in the PPDU, and the radar indication information comprises a Type field with a value of 11 and a Subtype field with a value of any one of 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, or 1111; and
transmitting the PPDU to a receiving device, wherein the receiving device is configured with a monitoring function which monitors a channel for data communication from the transmit end, wherein the PPDU specifies to the receiving device to turn off the monitoring function for a period of time specified by the PPDU, to thereby reduce power consumption of the receiving device.
2. An information indication apparatus, comprising:
a memory storing program instructions; and
at least one processor coupled to the memory, the at least one processor executing the instructions to:
generate a Physical Layer Convergence Protocol Data Unit (PPDU), the PPDU including radar indication information, wherein the radar indication information is configured to indicate that the PPDU is used for radar testing, the radar indication information is located in a PHY header in the PPDU, and the radar indication information comprises a Turnaround field with a value of 0 and a Scrambler Initialization field with a value of any one of 1010, 1011, 1000, 1001, 1100, 1101, 1110, 1111, 101R, 100R, 10R1, 10R0, 111R, 110R, 11R0, or 11R0, where R represents a reserved bit; and
transmit the PPDU to a receiving device, wherein the receiving device is configured with a monitoring function which monitors a channel for data communication from the transmit end, wherein the PPDU specifies to the receiving device to turn off the monitoring function for a period of time specified by the PPDU to thereby reduce power consumption of the receiving device.
3. A non-transitory computer readable storage medium comprising:
program instructions that when run cause the following operations to be performed:
generating a Physical Layer Convergence Protocol Data Unit (PPDU) including radar indication information configured to indicate that the PPDU is used for radar testing, the radar indication information is located in a PHY header in the PPDU, and the radar indication information comprises a Turnaround field with a value of 0 and a Scrambler Initialization field with a value of any one of 1010, 1011, 1000, 1001, 1100, 1101, 1110, 1111, 101R, 100R, 10R1, 10R0, 111R, 110R, 11R0, or 11R0, where R represents a reserved bit; and
transmitting the PPDU to a receiving device configured with a monitoring function which monitors a channel for data communication from the transmit end, wherein the PPDU specifies to the receiving device to turn off the monitoring function for a period of time specified by the PPDU, to thereby reduce power consumption of the receiving device.