Positioning signal sending method and apparatus

A positioning signal sending apparatus, comprising a processor and a transceiver, wherein the apparatus is configured to:

• generate a first signal, wherein a duration of a first rising edge of the first signal is less than a duration of a first falling edge, the duration of the first rising edge is a duration of a rising edge of a main lobe waveform of the first signal, and the duration of the first falling edge is a duration of a falling edge of the main lobe waveform of the first signal;
• and
• send the first signal,
• wherein the first rising edge is based on a rising edge of a main lobe waveform of a second signal, and the first falling edge is based on a falling edge of a main lobe waveform of a third signal,
• wherein a ratio of the duration of the first rising edge to the duration of the first falling edge is greater than or equal to a first threshold, and the method further comprises determining the first threshold based on a power spectrum density constraint condition, and
• wherein:
• both the second signal and the third signal are Gaussian pulse signals, and the first threshold is ½;
• the second signal is a Gaussian pulse signal, the third signal is an RRC pulse signal, and the first threshold is ⅔;
• the second signal is a Gaussian pulse signal, the third signal is a triangular pulse signal, and the first threshold is 5/12;
• the second signal is a triangular pulse signal, the third signal is a Gaussian pulse signal, and the first threshold is 5/9;
• the second signal is a triangular pulse signal, the third signal is an RRC pulse signal, and the first threshold is 5/7;
• or
• both the second signal and the third signal are triangular pulse signals, and the first threshold is ½.

A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is run, the computer is enabled to perform the following steps:

• generating a first signal, wherein a duration of a first rising edge of the first signal is less than a duration of a first falling edge, the duration of the first rising edge is a duration of a rising edge of a main lobe waveform of the first signal, and the duration of the first falling edge is a duration of a falling edge of the main lobe waveform of the first signal;
• and
• sending the first signal,
• wherein the first rising edge is based on a rising edge of a main lobe waveform of a second signal, and the first falling edge is based on a falling edge of a main lobe waveform of a third signal,
• wherein a ratio of the duration of the first rising edge to the duration of the first falling edge is greater than or equal to a first threshold, and the method further comprises determining the first threshold based on a power spectrum density constraint condition, and
• wherein:
• both the second signal and the third signal are Gaussian pulse signals, and the first threshold is ½;
• the second signal is a Gaussian pulse signal, the third signal is an RRC pulse signal, and the first threshold is ⅔;
• the second signal is a Gaussian pulse signal, the third signal is a triangular pulse signal, and the first threshold is 5/12;
• the second signal is a triangular pulse signal, the third signal is a Gaussian pulse signal, and the first threshold is 5/9;
• the second signal is a triangular pulse signal, the third signal is an RRC pulse signal, and the first threshold is 5/7;
• or
• both the second signal and the third signal are triangular pulse signals, and the first threshold is ½.

A non-transitory computer-readable medium comprising computer-executable instructions that are stored on a non-transitory computer-readable storage medium and that, when executed, cause an apparatus to:

• generate a first signal, wherein a duration of a first rising edge of the first signal is less than a duration of a first falling edge, the duration of the first rising edge is a duration of a rising edge of a main lobe waveform of the first signal, and the duration of the first falling edge is a duration of a falling edge of the main lobe waveform of the first signal;
• and
• send the first signal,
• wherein the first rising edge is based on a rising edge of a main lobe waveform of a second signal, and the first falling edge is based on a falling edge of a main lobe waveform of a third signal,
• wherein a ratio of the duration of the first rising edge to the duration of the first falling edge is greater than or equal to a first threshold, and the method further comprises determining the first threshold based on a power spectrum density constraint condition, and
• wherein:
• both the second signal and the third signal are Gaussian pulse signals, and the first threshold is ½;
• the second signal is a Gaussian pulse signal, the third signal is an RRC pulse signal, and the first threshold is ⅔;
• the second signal is a Gaussian pulse signal, the third signal is a triangular pulse signal, and the first threshold is 5/12;
• the second signal is a triangular pulse signal, the third signal is a Gaussian pulse signal, and the first threshold is 5/9;
• the second signal is a triangular pulse signal, the third signal is an RRC pulse signal, and the first threshold is 5/7;
• or
• both the second signal and the third signal are triangular pulse signals, and the first threshold is ½.