Signal transmission method and related apparatus

1 . A method for signal transmission, wherein the method is applied to a first initiating device, and the method comprises:

sending a poll frame, wherein the poll frame comprises time-frequency location information of N first ultra-wideband (UWB) segment signals, and the poll frame further comprises first delay information for each of M second responding devices to reply to the first initiating device with a response frame, and wherein N and M are integers greater than or equal to 2; and

receiving a plurality of response frames based on a timestamp of the poll frame and the first delay information for each of the M second responding devices.

2 . The method according to claim 1 , wherein:

the poll frame comprises second delay information for each of the M second responding devices to reply to the first UWB segment signals that are from the first initiating device; and

the method further comprises:

separately sending the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals; and

separately receiving a plurality of second UWB segment signals based on the second delay information for each of the M second responding devices to reply to the first UWB segment signals that are from the first initiating device.

3 . The method according to claim 1 , wherein:

the poll frame comprises second delay information for each of the M second responding devices to send a data frame to the first initiating device; and

the method further comprises: receiving a plurality of data frames based on the second delay information for each of the M second responding devices to send the data frame to the first initiating device, wherein:

each of the plurality of data frames comprises a time difference between a time at which a first responding device receives the N first UWB segment signals and a time at which a first responding device sends N second UWB segment signals; or

each of the plurality of data frames comprises a time difference between a time at which a first responding device receives the N first UWB segment signals and a time at which a first responding device sends N first orthogonal UWB segment signals; and

the first responding device is any one of the M second responding devices.

4 . The method according to claim 2 , wherein the separately sending the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals comprises:

when a first timer does not expire and M response frames are received, separately sending the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals; or

when S response frames are received and a first timer expires, separately sending the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals, wherein the first timer is triggered when the poll frame is sent, and S is an integer greater than or equal to 1 and less than M.

5 . A method for signal transmission, wherein the method is applied to a first responding device, and the method comprises:

receiving a poll frame, wherein the poll frame comprises time-frequency location information of N first ultra-wideband (UWB) segment signals, and the poll frame further comprises delay information for each of M second responding devices to reply to a first initiating device with a response frame, wherein N and M are integers greater than or equal to 2, and the first responding device is any one of the M second responding devices; and

sending a first response frame to the first initiating device based on a timestamp of the poll frame and the delay information for the first responding device to reply to the first initiating device with the response frame.

6 . The method according to claim 5 , wherein:

the poll frame comprises delay information for each of the M second responding devices to reply to the first UWB segment signals that are from the first initiating device; and

the method further comprises:

separately receiving the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals; and

separately sending N second UWB segment signals to the first initiating device based on the delay information for the first responding device to reply to the first UWB segment signals that are from the first initiating device.

7 . The method according to claim 5 , wherein:

the poll frame comprises delay information for each of the M second responding devices to send a data frame to the first initiating device; and

the method further comprises: sending a data frame to the first initiating device based on the delay information for the first responding device to send the data frame to the first initiating device, wherein:

the data frame comprises a time difference between a time at which a first responding device receives the N first UWB segment signals and a time at which a first responding device sends N second UWB segment signals; or

the data frame comprises a time difference between a time at which a first responding device receives the N first UWB segment signals and a time at which a first responding device sends N first orthogonal UWB segment signals.

8 . An apparatus for communication, wherein the apparatus is used in a first initiating device, and the apparatus comprises:

one or more processors; and

one or more memories coupled to the one or more processors and storing programming instructions for execution by the one or more processors to:

send a poll frame, wherein the poll frame comprises time-frequency location information of N first ultra-wideband (UWB) segment signals, and the poll frame further comprises first delay information for each of M second responding devices to reply to the first initiating device with a response frame, and wherein N and M are integers greater than or equal to 2; and

receive a plurality of response frames based on a timestamp of the poll frame and the first delay information for each of the M second responding devices.

9 . The apparatus according to claim 8 , wherein:

the poll frame comprises second delay information for each of the M second responding devices to reply to the first UWB segment signals that are from the first initiating device; and

the one or more memories store programming instructions for execution by the one or more processors to:

separately send the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals; and

separately receive a plurality of second UWB segment signals based on the second delay information for each of the M second responding devices to reply to the first UWB segment signals that are from the first initiating device.

10 . The apparatus according to claim 8 , wherein:

the poll frame comprises second delay information for each of the M second responding devices to send a data frame to the first initiating device; and

the one or more memories store programming instructions for execution by the one or more processors to: receive a plurality of data frames based on the second delay information for each second responding device to send the data frame to the first initiating device, wherein:

each of the plurality of data frames comprises a time difference between a time at which a first responding device receives the N first UWB segment signals and a time at which a first responding device sends N second UWB segment signals; or

each of the plurality of data frames comprises a time difference between a time at which a first responding device receives the N first UWB segment signals and a time at which a first responding device sends N first orthogonal UWB segment signals; and

the first responding device is any one of the M second responding devices.

11 . The apparatus according to claim 9 , wherein the separately sending the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals comprises:

when a first timer does not expire and M response frames are received, separately send the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals; or

when S response frames are received and a first timer expires, separately send the N first UWB segment signals based on the time-frequency location information of the N first UWB segment signals, wherein

the first timer is triggered when the poll frame is sent, and S is an integer greater than or equal to 1 and less than M.