Communication method and device

Abstract

The invention provides a communication method and device, and relates to the technical field of communication, in the method, a first communication device can send a first signal on a single frequency band, such as a first frequency band, and send a second signal on multiple frequency bands, such as M second frequency bands, so that the second communication device can execute single-frequency-band sensing and also execute multi-frequency-band sensing, and the communication efficiency is improved. Therefore, the perception capability is enhanced. For example, the second communication device can perform phase and / or system time delay calibration on signals received on multiple frequency bands by using a sensing result obtained by single-frequency-band sensing measurement, such as time delay of a scattering point, so that the multiple frequency bands are coherently synthesized into a larger bandwidth, the distance resolution can be improved, and the system performance can be improved. The multi-band measurement can also effectively resist the influence of RCS fluctuation, and the perception detection performance is improved.

Description

Communication method and device Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0002] Harmonized communication and sensing (HCS), also known as integrated sensing and communication (ISAC), is considered a key technology for expanding the service capabilities of mobile communication networks during the evolution from the fifth generation (5G) to 5G-advanced (5G-A) and the future sixth generation (6G). It has been defined by the International Telecommunication Union Radiocommunication Sector (ITU-R) as one of the six visions of IMT2030 (6G). The core concept of this technology is to add sensing capabilities to mobile communication networks, building the ability to detect, track, and image targets, thereby integrating communication and sensing capabilities into a single network.

[0003] However, current perception technologies may not be able to meet future application scenarios.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a communication method and apparatus to enhance perception capabilities.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, a communication method is provided, applied to a first communication device. The method includes: the first communication device transmitting a first signal on a first frequency band, and transmitting a second signal on M non-contiguous second frequency bands, where M is an integer greater than or equal to 2. The first signal and the second signal are signals used for sensing.

[0008] Based on the methods described in the first aspect and the second aspect, it can be seen that the first communication device can send the first signal on a single frequency band, such as the first frequency band, and send the second signal on multiple frequency bands, such as M second frequency bands, so that the second communication device can perform both single-frequency band perception and multi-frequency band perception, thereby achieving enhanced perception capability.

[0009] It is understood that the first communication device may be a terminal, a device including a terminal, or a chip in a terminal. Alternatively, the first communication device may be a network device, a device including a network device, or a chip in a network device.

[0010] In one possible design, the bandwidth of the first frequency band is greater than the bandwidth of any of the M second frequency bands. That is, the first frequency band can be a continuous frequency domain resource with a large bandwidth to ensure perception performance and distinguish as many scattering points as possible.

[0011] In a possible design scheme, the method described in the first aspect may also include: the first communication device sends capability information to the third communication device, where the capability information is used to indicate the frequency bands supported by the first communication device, and the frequency bands supported by the first communication device include a first frequency band and M second frequency bands, so that the first communication device can be configured to send signals on the frequency band supported by itself, thereby avoiding perception failure due to unsupported frequency bands.

[0012] Optionally, the method described in the first aspect may further include: the first communication device receiving first configuration information from a third communication device. The first configuration information may be used to instruct the first communication device to transmit signals on a first frequency band. In other words, the third communication device may configure the frequency band supported by the first communication device, i.e., the first frequency band, based on the capabilities of the first communication device.

[0013] Furthermore, the first configuration information may include at least one of the following: the frequency of the first frequency band, the bandwidth of the first frequency band, or the period for the first communication device to send signals on the first frequency band. The frequency of the first frequency band may be a center frequency or an endpoint frequency band, or may be any frequency pre-configured by the first communication device and the third communication device or pre-defined by the protocol, without limitation. The frequency of the first frequency band and the bandwidth of the first frequency band can be combined to determine the frequency domain resources contained in the first frequency band, so that the first communication device can use these frequency domain resources to send signals according to the period.

[0014] It is understood that the frequency and bandwidth of the first frequency band, as well as the period for transmitting signals on the first frequency band, are optional information elements. If the first communication device knows the frequency of the first frequency band by default, the bandwidth and period may be indicated without indicating the frequency. If the first communication device knows the bandwidth of the first frequency band by default, the frequency and period may also be indicated without indicating the bandwidth, and so on. No further explanation is given.

[0015] Furthermore, the first communication device sending the first signal on the first frequency band includes: the first communication device sending the first signal on the first frequency band according to the first configuration information. That is, the first communication device sending the first signal on the first frequency band may be triggered by receiving the first configuration information, so as to achieve on-demand transmission and avoid wasting communication resources by sending signals when no perception is required. Of course, the triggering method is not limited to the first configuration information, but can also be other information different from the first configuration information, such as first indication information. In this case, if the first communication device receives the first indication information, it sends the first signal on the first frequency band.

[0016] Optionally, the method described in the first aspect may further include: the first communication device receiving second configuration information from a third communication device. The second configuration information may be used to instruct the first communication device to transmit signals on M second frequency bands. Similarly, the third communication device may also configure the frequency bands supported by the first communication device, i.e., the M second frequency bands, based on the capabilities of the first communication device.

[0017] Furthermore, the second configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands. The frequency point of each second frequency band can be a center frequency point or an endpoint frequency band, or it can be any frequency point pre-configured by the first communication device and the third communication device or pre-defined by the protocol, and there is no limitation on this. The frequency point of each second frequency band and the bandwidth of the second frequency band can be combined to determine the frequency domain resources contained in the second frequency band, so that the first communication device can use these non-continuous frequency domain resources to send signals according to the period.

[0018] It is understood that the frequency and bandwidth of any second frequency band, as well as the period for transmitting signals on the second frequency band, are optional information elements. If the first communication device knows the frequency of the second frequency band by default, then only the bandwidth and period can be indicated. If the first communication device knows the frequency band of the second frequency band by default, then only the frequency band and period can be indicated. And so on, which will not be further described.

[0019] It can also be understood that the first configuration information and the second configuration information can be sent together, such as carried in the same signaling or message, or can be sent separately, such as carried in different signaling or messages, without specific limitation.

[0020] Furthermore, the first communication device sends the second signal on M non-contiguous second frequency bands, including: the first communication device sends the second signal on M non-contiguous second frequency bands according to the second configuration information. That is, the first communication device sending the second signal on the M second frequency bands can be triggered by receiving the second configuration information to achieve on-demand transmission and avoid wasting communication resources by sending signals when no perception is required. Of course, the triggering method may not be limited to the second configuration information, but may also be other information different from the second configuration information, such as second indication information. In this case, if the first communication device receives the second indication information, it sends the second signal on the M second frequency bands.

[0021] In another possible design scheme, the method described in the first aspect may also include: the first communication device receives capability information from the second communication device, the capability information is used to indicate the frequency bands supported by the second communication device, and the frequency bands supported by the second communication device include a first frequency band and M second frequency bands, so as to avoid perception failure caused by the first communication device sending a signal on a frequency band not supported by the second communication device.

[0022] Optionally, the method described in the first aspect may also include: the first communication device sends third configuration information to the second communication device, wherein the third configuration information can be used to instruct the second communication device to receive signals in the first frequency band to achieve transmission and reception alignment, thereby avoiding perception failure caused by the second communication device receiving signals in other frequency bands.

[0023] Furthermore, the third configuration information includes at least one of the following: the frequency point of the first frequency band, the bandwidth of the first frequency band, or the period for the second communication device to receive signals on the first frequency band. Similar to the above, the frequency point of the first frequency band can be the center frequency point or the endpoint frequency band, or it can be any frequency point pre-configured by the first communication device and the second communication device or pre-defined by the protocol, and there is no limitation on this. The frequency point of the first frequency band and the bandwidth of the first frequency band can be combined to determine the frequency domain resources contained in the first frequency band, so that the second communication device can receive signals on these frequency domain resources according to the period.

[0024] It is understood that, similar to the above, the frequency and bandwidth of the first frequency band, as well as the period for receiving signals on the first frequency band, are optional information elements. If the second communication device knows the frequency of the first frequency band by default, then only the bandwidth and period can be indicated. If the second communication device knows the frequency of the first frequency band by default, then only the frequency band and period can be indicated. And so on, and no further details are given.

[0025] Optionally, the method described in the first aspect may further include: the first communication device sending fourth configuration information to the second communication device. The fourth configuration information may be used to instruct the second communication device to receive signals on M second frequency bands to achieve transceiver alignment and avoid perception failure caused by the second communication device receiving signals in other frequency bands.

[0026] Furthermore, the fourth configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the second communication device to receive signals on the M second frequency bands. Similar to the above, the frequency point of each second frequency band can be a center frequency point or an endpoint frequency band, or it can be any frequency point pre-configured by the first communication device and the second communication device or pre-defined by the protocol, and there is no limitation on this. The frequency point of each second frequency band and the bandwidth of the second frequency band can be combined to determine the frequency domain resources contained in the second frequency band, so that the second communication device can receive signals on these non-continuous frequency domain resources according to the period.

[0027] It is understood that, similar to the above, the frequency and bandwidth of any second frequency band, as well as the period for transmitting signals on the second frequency band, are optional information elements. If the second communication device knows the frequency of the second frequency band by default, only the bandwidth and period can be indicated. If the second communication device knows the frequency of the second frequency band by default, only the frequency band and period can be indicated, and so on. Detailed description is omitted here.

[0028] It can also be understood that the third configuration information and the fourth configuration information can be sent together, such as carried in the same signaling or message, or can be sent separately, such as carried in different signaling or messages, without specific limitation.

[0029] In one possible design, the first signal is used to determine the delay at a scattering point. The delay at a scattering point is the time required for a signal sent by a first communication device to propagate to a receiving communication device after passing through the scattering point (e.g., reflection, diffraction, scattering, etc.). Based on this, the second signal is used to coherently combine at least two of the M second frequency bands to obtain a larger bandwidth than the first frequency band, thereby further improving perception performance.

[0030] In a second aspect, a communication method is provided, which is applied to a second communication device, the method comprising: the second communication device receives a third signal on a first frequency band, and receives a fourth signal on M non-continuous second frequency bands, thereby performing perception processing based on the third signal and the fourth signal, where M is an integer greater than or equal to 2.

[0031] It is understood that the second communication device may also be a terminal, a device including a terminal, or a chip in a terminal. Alternatively, the second communication device may also be a network device, a device including a network device, or a chip in a network device.

[0032] In one possible design, the bandwidth of the first frequency band is greater than the bandwidth of any second frequency band in the M second frequency bands.

[0033] In one possible design scheme, the second communication device performs perception processing based on the third signal and the fourth signal, including: the second communication device performs perception processing of coherently synthesizing M second frequency bands based on the third signal and the fourth signal, such as coherently synthesizing into a frequency band with a larger bandwidth than the first frequency band, which can enhance the perception capability and improve the perception performance.

[0034] Optionally, the second communication device performs perceptual processing for coherently synthesizing M second frequency bands based on the third signal and the fourth signal, including: the second communication device determines the system delay of at least two second frequency bands in the M second frequency bands and / or the phase difference between at least two second frequency bands based on the third signal and the fourth signal; the second communication device performs perceptual processing for coherently synthesizing at least two second frequency bands based on the system delay of at least two second frequency bands and / or the phase difference between at least two second frequency bands.

[0035] It's understandable that signals on different second frequency bands may experience phase differences during transmission and reception due to different system hardware processing, and that different system hardware may also produce different system delays. Therefore, as long as the phase difference between two different frequency bands and their respective system delays can be determined, the two different frequency bands can be coherently combined to improve perceptual performance.

[0036] In one possible design, the method described in the second aspect may further include: the second communication device receiving capability information from the first communication device. The capability information is used to indicate frequency bands supported by the first communication device, where the frequency bands supported by the first communication device include a first frequency band and M second frequency bands.

[0037] Optionally, the method described in the second aspect may further include: the second communication device sending first configuration information to the first communication device, wherein the first configuration information may be used to instruct the first communication device to send a signal on the first frequency band.

[0038] Furthermore, the first configuration information may include at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the first communication device to send a signal on the first frequency band.

[0039] Furthermore, the second communication device sends first configuration information to the first communication device, including: when the M second frequency bands cannot be coherently synthesized, the second communication device sends the first configuration information to the first communication device to trigger the first communication device to send a signal on the first frequency band.

[0040] Optionally, the method described in the second aspect may further include: the second communication device sending second configuration information to the first communication device, wherein the second configuration information may be used to instruct the first communication device to send signals on M second frequency bands.

[0041] Furthermore, the second configuration information includes at least one of the following: a frequency point of each of the M second frequency bands, a bandwidth of each of the M second frequency bands, or a period for the first communication device to send signals on the M second frequency bands.

[0042] Furthermore, the second communication device sends second configuration information to the first communication device, including: when the number of scattering points observed by the second communication device on the first frequency band is greater than a preset threshold, that is, the number of scattering points can satisfy the coherent synthesis of M second frequency bands, the first communication device can send the second configuration information to the first communication device to trigger the first communication device to send a signal on the M second frequency bands to achieve coherent synthesis of the M second frequency bands.

[0043] In another possible design, the method described in the second aspect may further include: the second communication device sending capability information to the third communication device. The capability information may be used to indicate frequency bands supported by the second communication device, where the frequency bands supported by the second communication device include the first frequency band and M second frequency bands.

[0044] Optionally, the method described in the second aspect may further include: the second communication device receiving third configuration information from a third communication device, wherein the third configuration information is used to instruct the second communication device to receive signals in the first frequency band.

[0045] Furthermore, the third configuration information may include at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the second communication device to receive signals in the first frequency band.

[0046] Optionally, the method described in the second aspect may further include: the second communication device receiving fourth configuration information from the third communication device, wherein the fourth configuration information is used to instruct the second communication device to receive signals on M second frequency bands.

[0047] Furthermore, the fourth configuration information includes at least one of the following: a frequency point of each of the M second frequency bands, a bandwidth of each of the M second frequency bands, or a period for the second communication device to receive signals on the M second frequency bands.

[0048] In one possible design, the fourth signal received on the M second frequency bands includes an i-th fourth signal and a j-th fourth signal, the i-th fourth signal being a signal received on the i-th second frequency band, and the j-th fourth signal being a signal received on the j-th second frequency band, where i and j are different and are arbitrary integers ranging from 1 to M. The at least two second frequency bands include the i-th second frequency band and the j-th second frequency band. Thus, the second communication device may determine the system delay of at least two second frequency bands in the M second frequency bands and / or the phase difference between at least two second frequency bands based on the third signal and the fourth signal, including: the second communication device may determine the delay of each of the N scattering points based on the third signal. The second communication device may determine the phase difference and / or system delay between the i-th second frequency band and the j-th second frequency band based on the delay of each of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal. Wherein, N is a positive integer, and the time delay of each of the N scattering points is the time delay required for a signal sent by the second communication device or a communication device other than the second communication device to propagate to the second communication device after passing through the N scattering points (such as reflection, diffraction, scattering, etc.).

[0049] For example, at least one of the above-mentioned phase difference and system delay, the delays of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal satisfy the following relationship:

[0050] in, is the difference between the phase of the i-th fourth signal and the phase of the j-th fourth signal, f i is the center frequency of the i-th second frequency band, f j is the center frequency of the jth second frequency band, τ l is the time delay of the lth scattering point among N scattering points, l is any integer from 1 to N, τ i is the first system delay, τ j is the second system delay, Δφ ij is the phase difference.

[0051] Furthermore, the phase difference may be the difference between a phase offset generated when the second communication device and the first communication device process signals in the i-th second frequency band, and a phase offset generated when the second communication device and the first communication device process signals in the j-th second frequency band. The first system delay may be the delay generated when the second communication device and the first communication device process signals in the i-th second frequency band. The second system delay may be the delay generated when the second communication device and the first communication device process signals in the j-th second frequency band.

[0052] It can be seen that if the delay of the same scattering point, such as the delay of scattering point 1, scattering point 2, and scattering point 3, can be known, and the phase of the fourth signal affected by these scattering points is observed in different second frequency bands, the phase difference and / or system delay between different second frequency bands can be determined.

[0053] In one possible design, the signal strength of the signal corresponding to the lth scattering point is greater than an intensity threshold, and the signal strengths of the signals corresponding to other scattering points are less than or equal to the intensity threshold. The other scattering points are scattering points other than the lth scattering point within the lth range resolution unit in which the lth scattering point is located. In other words, within the lth range resolution unit, typically only the lth scattering point has a signal strength greater than the intensity threshold, and it can be considered an isolated point within the lth range resolution unit. Of course, it is also possible that only the lth scattering point exists, with no other scattering points. In this way, when the second communication device observes within the lth range resolution unit, the energy of the lth scattering point can dominate, thereby enabling a relatively accurate measurement of the lth scattering point.

[0054] In one possible design, a second communication device performs a sensing process of coherently combining at least two second frequency bands based on their respective system delays and / or phase differences between the at least two second frequency bands. The process includes: coherently combining the i-th second frequency band with the j-th second frequency band based on the aforementioned phase differences and / or system delays to obtain respective delays for K scattering points, where K is an integer greater than N. The respective delays for the K scattering points may refer to the delays required for a signal transmitted by another communication device to propagate to the second communication device after passing through the K scattering points (e.g., reflection, diffraction, scattering, etc.). In other words, by obtaining a larger bandwidth through coherent combining, the second communication device can measure a larger number of K scattering points (K>N), thereby improving sensing performance. For example, more accurate sensing measurements of the target objects located by the K scattering points can be achieved.

[0055] It can be seen that in the above method, the first communication device can send signals for perception in different stages, such as sending signals on a single frequency band in the first stage, such as the first signal, and sending signals on non-contiguous multiple frequency bands in the second stage, such as the second signal. Accordingly, the second communication device can use the perception results obtained from the first stage measurement, such as the delay of the scattering point, to calibrate the phase and / or system delay of the signals received on the multiple frequency bands in the second stage, thereby achieving coherent synthesis of the multiple frequency bands into a larger bandwidth. This not only improves the distance resolution, but the multi-band measurement can also effectively resist the influence of RCS fluctuations and improve the perception detection performance.

[0056] It can be understood that the relevant technical effects of the method described in the second aspect can also refer to the relevant introduction of the first aspect, which will not be repeated here.

[0057] According to a third aspect, a communication method is provided, which is applied to a third communication device. The method includes: the third communication device receives capability information of a first communication device, and sends first configuration information and second configuration information to the first communication device based on the capability information of the first communication device. The capability information of the first communication device is used to indicate the frequency bands supported by the first communication device, and the frequency bands supported by the first communication device include a first frequency band and M non-contiguous second frequency bands, where M is an integer greater than or equal to 2; the first configuration information is used to instruct the first communication device to send signals on the first frequency band, and the second configuration information is used to instruct the first communication device to send signals on the M second frequency bands, and the signals on the first frequency band and the M second frequency bands are signals used for sensing.

[0058] In one possible design scheme, the first configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the first communication device to send signals in the first frequency band.

[0059] In one possible design scheme, the second configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands.

[0060] In one possible design scheme, the method described in the third aspect may further include: the third communication device receiving capability information of the second communication device. The capability information of the second communication device is used to indicate the frequency bands supported by the second communication device, and the frequency bands supported by the second communication device include a first frequency band and M non-contiguous second frequency bands. Accordingly, the third communication device sends the first configuration information and the second configuration information to the first communication device based on the capability information of the first communication device, including: the third communication device sends the first configuration information and the second configuration information to the first communication device based on the capability information of the first communication device and the capability information of the second communication device.

[0061] In a fourth aspect, a communication method is provided, which is applied to a third communication device, the method comprising: the third communication device receiving capability information of a second communication device, and sending third configuration information and fourth configuration information to the second communication device based on the capability information of the second communication device. The capability information of the second communication device is used to indicate the frequency bands supported by the second communication device, and the frequency bands supported by the second communication device include a first frequency band and M non-contiguous second frequency bands, where M is an integer greater than or equal to 2; the third configuration information is used to instruct the second communication device to receive signals on the first frequency band, and the fourth configuration information is used to instruct the second communication device to receive signals on the M second frequency bands, and the signals on the first frequency band and the M second frequency bands are signals used for perception.

[0062] In one possible design scheme, the third configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the second communication device to receive signals in the first frequency band.

[0063] In one possible design scheme, the fourth configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the second communication device to receive signals on the M second frequency bands.

[0064] In one possible design, a third communication device receives capability information from a first communication device. The capability information of the first communication device indicates frequency bands supported by the first communication device, where the frequency bands supported by the first communication device include a first frequency band and M non-contiguous second frequency bands. Accordingly, the third communication device sends third configuration information and fourth configuration information to the second communication device based on the capability information of the second communication device, including: the third communication device sends the third configuration information and fourth configuration information to the second communication device based on the capability information of the first communication device and the capability information of the second communication device.

[0065] It can be understood that the relevant technical effects of the method described in the third aspect or the fourth aspect can also refer to the relevant introduction of the first aspect, which will not be repeated here.

[0066] In a fifth aspect, a communication device is provided. The communication device includes: a module for executing the method described in any one of aspects 1 to 4, such as a transceiver module and a processing module. For example, the transceiver module is configured to indicate the transceiver function of the communication device, and the processing module is configured to perform functions of the communication device other than the transceiver function.

[0067] In one possible implementation, the communication device described in the fifth aspect includes a processing module and a transceiver module for executing the method described in the first aspect. The processing module is configured to control the transceiver module to transmit a first signal on a first frequency band and to transmit a second signal on M non-contiguous second frequency bands, where M is an integer greater than or equal to 2. The first signal and the second signal are signals used for sensing.

[0068] In one possible design, the bandwidth of the first frequency band is greater than the bandwidth of any second frequency band in the M second frequency bands.

[0069] In one possible design scheme, the processing module is also used to control the transceiver module to send capability information to the third communication device, and the capability information is used to indicate the frequency bands supported by the communication device described in the fifth aspect. The frequency bands supported by the communication device described in the fifth aspect include the first frequency band and M second frequency bands.

[0070] Optionally, the transceiver module is further configured to receive first configuration information from a third communication device, wherein the first configuration information may be used to instruct the communication device described in the fifth aspect to transmit a signal on a first frequency band.

[0071] Furthermore, the first configuration information may include at least one of the following: the frequency point of the first frequency band, the bandwidth of the first frequency band, or the period for the communication device described in the fifth aspect to send signals on the first frequency band.

[0072] Furthermore, the processing module is further configured to control the transceiver module to send the first signal in the first frequency band according to the first configuration information.

[0073] Optionally, the transceiver module is further configured to receive second configuration information from a third communication device, wherein the second configuration information may be used to instruct the communication device described in the fifth aspect to send signals on M second frequency bands.

[0074] Furthermore, the second configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the communication device described in the fifth aspect to send signals on the M second frequency bands.

[0075] In another possible design, the transceiver module is further configured to receive capability information from the second communication device, where the capability information is used to indicate frequency bands supported by the second communication device, where the frequency bands supported by the second communication device include a first frequency band and M second frequency bands.

[0076] Optionally, the processing module is further configured to control the transceiver module to send third configuration information to the second communication device, wherein the third configuration information may be used to instruct the second communication device to receive signals in the first frequency band.

[0077] Furthermore, the third configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the second communication device to receive signals in the first frequency band.

[0078] Optionally, the processing module is further configured to control the transceiver module to send fourth configuration information to the second communication device, wherein the fourth configuration information may be used to instruct the second communication device to receive signals on M second frequency bands.

[0079] Furthermore, the fourth configuration information includes at least one of the following: a frequency point of each of the M second frequency bands, a bandwidth of each of the M second frequency bands, or a period for the second communication device to receive signals on the M second frequency bands.

[0080] In one possible design, the first signal is used to determine a scattering point delay, where the scattering point delay is the delay required for a signal transmitted by the communication device described in the fifth aspect to propagate through the scattering point to the communication device receiving the signal. Based on this, the second signal is used to coherently combine at least two of the M second frequency bands.

[0081] In another possible implementation, the communication device described in the fifth aspect further includes a processing module and a transceiver module for executing the method described in the second aspect. The transceiver module is configured to receive a third signal on a first frequency band and a fourth signal on M non-contiguous second frequency bands; and the processing module is configured to perform sensing processing based on the third and fourth signals, where M is an integer greater than or equal to 2.

[0082] In one possible design, the bandwidth of the first frequency band is greater than the bandwidth of any second frequency band in the M second frequency bands.

[0083] In one possible design scheme, the processing module is specifically used to perform perception processing of coherently synthesizing M second frequency bands based on the third signal and the fourth signal.

[0084] Optionally, the processing module is specifically used to determine the system delay of at least two second frequency bands in the M second frequency bands and / or the phase difference between at least two second frequency bands based on the third signal and the fourth signal, and perform perceptual processing of coherently synthesizing at least two second frequency bands based on the system delay of at least two second frequency bands and / or the phase difference between at least two second frequency bands.

[0085] In one possible design, the transceiver module is further configured to receive capability information from the first communication device. The capability information is used to indicate frequency bands supported by the first communication device, where the frequency bands supported by the first communication device include a first frequency band and M second frequency bands.

[0086] Optionally, the processing module is further configured to control the transceiver module to send first configuration information to the first communication device, wherein the first configuration information may be used to instruct the first communication device to send a signal on a first frequency band.

[0087] Furthermore, the first configuration information may include at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the first communication device to send a signal on the first frequency band.

[0088] Furthermore, the processing module is further configured to control the transceiver module to send the first configuration information to the first communication device when the M second frequency bands cannot be coherently combined.

[0089] Optionally, the processing module is further configured to control the transceiver module to send second configuration information to the first communication device, wherein the second configuration information may be used to instruct the first communication device to send signals on M second frequency bands.

[0090] Furthermore, the second configuration information includes at least one of the following: a frequency point of each of the M second frequency bands, a bandwidth of each of the M second frequency bands, or a period for the first communication device to send signals on the M second frequency bands.

[0091] Furthermore, the processing module is also used to control the transceiver module to send second configuration information to the first communication device when the number of scattering points observed on the first frequency band is greater than a preset threshold, triggering the first communication device to send signals on M second frequency bands.

[0092] Alternatively, in another possible design, the processing module is further configured to control the transceiver module to send capability information to the third communication device. The capability information may be used to indicate frequency bands supported by the communication device described in the fifth aspect, where the frequency bands supported by the communication device described in the fifth aspect include the first frequency band and M second frequency bands.

[0093] Optionally, the transceiver module is further used to receive third configuration information from a third communication device, wherein the third configuration information is used to instruct the communication device described in the fifth aspect to receive signals on the first frequency band.

[0094] Furthermore, the third configuration information may include at least one of the following: the frequency point of the first frequency band, the bandwidth of the first frequency band, or the period for the communication device described in the fifth aspect to receive signals on the first frequency band.

[0095] Optionally, the transceiver module is further used to receive fourth configuration information from a third communication device, wherein the fourth configuration information is used to instruct the communication device described in the fifth aspect to receive signals on M second frequency bands.

[0096] Furthermore, the fourth configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the communication device described in the fifth aspect to receive signals on the M second frequency bands.

[0097] In one possible design, the fourth signal received on the M second frequency bands includes the i-th fourth signal and the j-th fourth signal, the i-th fourth signal being the signal received on the i-th second frequency band, the j-th fourth signal being the signal received on the j-th second frequency band, i and j being different, and i and j being any integers from 1 to M. The at least two second frequency bands include the i-th second frequency band and the j-th second frequency band. Thus, the processing module is specifically configured to determine the respective time delays of the N scattering points based on the third signal, and determine the phase difference and / or system delay between the i-th second frequency band and the j-th second frequency band based on the respective time delays of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal. Wherein, N is a positive integer, and the time delay of each of the N scattering points is the time delay required for a signal transmitted by the communication device described in the fifth aspect or a communication device other than the communication device described in the fifth aspect to propagate to the communication device described in the fifth aspect after being acted upon by the N scattering points (e.g., by reflection, diffraction, scattering, etc.).

[0098] For example, at least one of the above-mentioned phase difference and system delay, the delays of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal satisfy the following relationship:

[0099] in, is the difference between the phase of the i-th fourth signal and the phase of the j-th fourth signal, f i is the center frequency of the i-th second frequency band, f j is the center frequency of the jth second frequency band, τ l is the time delay of the lth scattering point among N scattering points, l is any integer from 1 to N, τ i is the first system delay, τ j is the second system delay, Δφ ij is the phase difference.

[0100] Furthermore, the phase difference may be the difference between the phase offset generated when the communication device and the first communication device described in the fifth aspect process signals in the i-th second frequency band, and the phase offset generated when the communication device and the first communication device described in the fifth aspect process signals in the j-th second frequency band. The first system delay may be the delay generated when the communication device and the first communication device described in the fifth aspect process signals in the i-th second frequency band. The second system delay may be the delay generated when the communication device and the first communication device described in the fifth aspect process signals in the j-th second frequency band.

[0101] In one possible design, the signal strength corresponding to the lth scattering point is greater than the strength threshold, and the signal strengths corresponding to the other scattering points are less than or equal to the strength threshold. The other scattering points are scattering points other than the lth scattering point within the lth range resolution unit in which the lth scattering point is located. In other words, within the lth range resolution unit, typically only the lth scattering point has a signal strength greater than the strength threshold, and it can be considered an isolated point within the lth range resolution unit.

[0102] In one possible design scheme, the processing module is specifically used to coherently synthesize the i-th second frequency band and the j-th second frequency band according to the above-mentioned phase difference and / or system delay to obtain the delay of each of the K scattering points, where K is an integer greater than N. The delay of each of the K scattering points can refer to the delay required for the signal to be transmitted by other communication devices and then propagate to the communication device described in the fifth aspect after passing through the K scattering points (such as reflection, diffraction, scattering, etc.).

[0103] In another possible implementation, the communication device described in the fifth aspect includes a processing module and a transceiver module for executing the method described in the third aspect. The transceiver module is used to receive capability information of the first communication device, and the processing module is used to control the transceiver module to send first configuration information and second configuration information to the first communication device based on the capability information of the first communication device. The capability information of the first communication device is used to indicate the frequency bands supported by the first communication device, and the frequency bands supported by the first communication device include a first frequency band and M non-continuous second frequency bands, where M is an integer greater than or equal to 2; the first configuration information is used to instruct the first communication device to send signals on the first frequency band, and the second configuration information is used to instruct the first communication device to send signals on the M second frequency bands, and the signals on the first frequency band and the M second frequency bands are signals for perception.

[0104] In one possible design scheme, the first configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the first communication device to send signals in the first frequency band.

[0105] In one possible design scheme, the second configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands.

[0106] In one possible design, the transceiver module is further configured to receive capability information of a second communication device. The capability information of the second communication device indicates frequency bands supported by the second communication device, where the frequency bands supported by the second communication device include a first frequency band and M non-contiguous second frequency bands. The processing module is further configured to control the transceiver module to send the first configuration information and the second configuration information to the first communication device based on the capability information of the first communication device and the capability information of the second communication device.

[0107] In another possible implementation, the communication device described in the fifth aspect includes a processing module and a transceiver module for executing the method described in the fourth aspect. The transceiver module is used to receive capability information of the second communication device, and the processing module is used to control the transceiver module to send third configuration information and fourth configuration information to the second communication device based on the capability information of the second communication device. The capability information of the second communication device is used to indicate the frequency bands supported by the second communication device, and the frequency bands supported by the second communication device include a first frequency band and M non-continuous second frequency bands, where M is an integer greater than or equal to 2; the third configuration information is used to instruct the second communication device to receive signals on the first frequency band, and the fourth configuration information is used to instruct the second communication device to receive signals on the M second frequency bands, and the signals on the first frequency band and the M second frequency bands are signals for perception.

[0108] In one possible design scheme, the third configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the second communication device to receive signals in the first frequency band.

[0109] In one possible design scheme, the fourth configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the second communication device to receive signals on the M second frequency bands.

[0110] In one possible design, the transceiver module is further configured to receive capability information of a first communication device. The capability information of the first communication device indicates frequency bands supported by the first communication device, where the frequency bands supported by the first communication device include a first frequency band and M non-contiguous second frequency bands. The processing module is further configured to control the transceiver module to send third and fourth configuration information to the second communication device based on the capability information of the first and second communication devices.

[0111] Optionally, the transceiver module may include a sending module and a receiving module, wherein the sending module is used to implement the sending function of the communication device described in the fifth aspect, and the receiving module is used to implement the receiving function of the communication device described in the fifth aspect.

[0112] Optionally, the communication device described in the fifth aspect may further include a storage module, wherein the storage module stores a program or instruction. When the processing module executes the program or instruction, the communication device can execute the method described in any one of the first to fourth aspects.

[0113] It can be understood that the communication device described in the fifth aspect can be a terminal or a network device, or a chip (system) or other parts or components that can be set in a terminal or a network device, or a device that includes a terminal or a network device. This application does not limit this.

[0114] In addition, the technical effects of the communication device described in the fifth aspect can refer to the technical effects of the other aspects mentioned above and will not be repeated here.

[0115] In a sixth aspect, a communication device is provided, comprising: a processor configured to execute the method described in any one of the first to fourth aspects.

[0116] In one possible design, the communication device described in aspect 6 may further include a memory. The memory may be integrated with the processor or provided separately. The memory may be used to store the computer program and / or data involved in the method described in any one of aspects 1 to 4.

[0117] In one possible design solution, the communication device described in the sixth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the fourth aspect to communicate with other communication devices.

[0118] In an embodiment of the present application, the communication device described in the sixth aspect may be the terminal or network device described in any one of the first to fourth aspects, or a chip (system) or other parts or components that can be set in the terminal or network device, or a device that includes the terminal or network device.

[0119] In addition, the technical effects of the communication device described in the sixth aspect can refer to the technical effects of the methods described in any one of the first to fourth aspects, and will not be repeated here.

[0120] In the seventh aspect, a communication device is provided, comprising: a processor and a memory; the memory is used to store a computer program, and when the processor executes the computer program, the communication device executes the method described in any one of the first to fourth aspects.

[0121] In one possible design solution, the communication device described in the seventh aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the eighth aspect to communicate with other communication devices.

[0122] In an embodiment of the present application, the communication device described in the seventh aspect can be the terminal or network device described in any one of the first to fourth aspects, or a chip (system) or other parts or components that can be set in the terminal or network device, or a device that includes the terminal or network device.

[0123] In addition, the technical effects of the communication device described in the seventh aspect can refer to the technical effects of the methods described in any one of the first to fourth aspects, and will not be repeated here.

[0124] In an eighth aspect, a communication system is provided, comprising: a first communication device for executing the method described in the first aspect, and a second communication device for executing the method described in the second aspect.

[0125] Optionally, the communication system further includes: a third communication device for executing the method described in the third aspect or the fourth aspect.

[0126] In a ninth aspect, a computer-readable storage medium is provided, comprising: a computer program or instructions; when the computer program or instructions are run on a computer, the computer is caused to execute the method described in any one of the first to fourth aspects.

[0127] In a tenth aspect, a computer program product is provided, comprising a computer program or instructions, which, when executed on a computer, causes the computer to execute the method described in any one of the first to fourth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0128] Figure 1 is a schematic diagram of a wireless sensing scenario;

[0129] Figure 2 is a schematic diagram of a dual-base ranging scenario;

[0130] Figure 3 is a schematic diagram of a single-base ranging scenario;

[0131] FIG4 is a schematic diagram of normalized power variation;

[0132] FIG5 is a schematic diagram of single-band sensing and multi-band sensing;

[0133] FIG6 is a schematic diagram of signal transmission and reception for multi-band sensing;

[0134] FIG7 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0135] FIG8 is a flow chart of a communication method according to an embodiment of the present application;

[0136] FIG9 is a second flow chart of the communication method provided in an embodiment of the present application;

[0137] FIG10 is a schematic diagram of an application scenario of a communication method provided in an embodiment of the present application;

[0138] FIG11 is a third flow chart of the communication method provided in an embodiment of the present application;

[0139] FIG12 is a fourth flow chart of a communication method according to an embodiment of the present application;

[0140] FIG13 is a first structural diagram of a communication device provided in an embodiment of the present application;

[0141] FIG14 is a second structural diagram of the communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0142] For ease of understanding, the technical terms involved in the embodiments of this application are first introduced below.

[0143] 1. Carrier aggregation (CA):

[0144] To provide higher communication speeds, the 3rd Generation Partner Project (3GPP) proposed a downlink rate requirement of 1 Gbit / s in the Long Term Evolution-Advanced (LTE-advanced) phase. Due to factors such as the scarcity of wireless spectrum resources, operators' spectrum resources are non-contiguous, and each single frequency band is unable to meet the bandwidth requirements of LTE-advanced. For these reasons, 3GPP introduced Carrier Access (CA) in the Release 10 phase. By aggregating multiple contiguous or non-contiguous component carriers (CCs) into a larger bandwidth, it improves communication throughput and meets 3GPP's requirements.

[0145] 2. ISAC:

[0146] In recent years, wireless sensing technology has attracted widespread attention from both industry and academia. Wireless sensing technology analyzes changes in wireless signals during propagation to determine the characteristics of the signal propagation space (channel), enabling scene perception. This scene includes both target factors (such as the presence of a target, its location, posture, and motion), as well as external factors (such as buildings and moving vehicles). For example, radar is a classic wireless sensing method, widely used in fields such as agriculture and meteorology. Its basic principle is that a transmitter transmits a specific waveform signal, which is received by a receiver after passing through a wireless channel. Signal processing is performed on the transmitted and received signals to extract targets of interest in the wireless channel.

[0147] The primary function of wireless communication is to exchange information between transceivers. Its basic principle is that a transmitter transmits a specific waveform signal, which is received by a receiver after passing through a wireless channel and then demodulated after signal processing. It can be seen that the physical processes of transmission, transmission, and reception are quite similar between wireless sensing and wireless communication. Therefore, in the evolution from 5G to enhanced 5G technology, and in future 6G networks, ISAC (Joint Communications and Sensing) (JCS / JCAS), a technology that integrates wireless communication and wireless sensing, has been proposed. This technology is considered a key technology for expanding the service capabilities of mobile communication networks. The core concept of this technology is to add sensing capabilities to mobile communication networks, building the ability to detect, track, and image targets. This allows communication and sensing capabilities to be integrated into a single network, achieving harmonious coexistence and even mutual benefit.

[0148] ISAC can generally be divided into two modes: single-station sensing and dual-station sensing. In single-station sensing, the transmitter and receiver of the sensing signal are the same device. From the perspective of the sensing signal process, the sensing station must both send the sensing signal and receive the signal after it is affected by the target surface (such as reflection, diffraction, scattering, etc.). Therefore, the single-station sensing mode is also called the self-transmitting and self-receiving mode. In dual-station sensing, the transmitter and receiver of the sensing signal are two devices in different spatial locations. From the perspective of the sensing signal process, after sensing station A sends the sensing signal, the signal after it is affected by the target surface (such as reflection, diffraction, scattering, etc.) is received by sensing station B. Therefore, the dual-station sensing mode is also called the A-transmitting, B-receiving mode.

[0149] As shown in Figure 1, the perception modes can be divided into the following six modes:

[0150] 1) Base station sends and receives: The base station acts as the transmitter and control terminal, and the terminal acts as the receiver. The sensing signal is sent by the base station, reflected by the target in the environment (such as bicycles, cars, etc.), and then received and processed by the terminal to obtain the sensing result, such as the target's distance, speed, angle, intensity, etc.

[0151] 2) Terminal transmits, base station receives: The terminal acts as the transmitter, and the base station acts as the receiver and controller. The sensing signal is sent by the terminal, reflected by an object in the environment, and then received and processed by the base station to obtain the sensing result.

[0152] 3) Base Station A transmits, Base Station B receives: Base Station A acts as the transmitter and controller, while Base Station B acts as the receiver. The sensing signal is transmitted by Base Station A, reflected by an object in the environment, and then received and processed by Base Station B to generate the sensing result. Optionally, Base Station C can also be present. In this case, Base Station A can serve only as the transmitter, while Base Station C can serve as the controller.

[0153] 4) Terminal A transmits, terminal B receives: Terminal A acts as the transmitter and control terminal, while terminal B acts as the receiver. The sensing signal is sent by terminal A, reflected by an object in the environment, and then received and processed by terminal B to obtain the sensing result.

[0154] 5) Base station self-transmission and self-reception: The base station acts as the transmitter, receiver, and controller. The sensing signal is sent by the base station, reflected by an object in the environment, and then received and processed by the base station to obtain the sensing result.

[0155] 6) Terminal self-transmission and self-reception: The terminal acts as a transmitter, receiver, and controller. The sensing signal is sent by the terminal, reflected by an object in the environment, and then received and processed by the terminal to obtain the sensing result.

[0156] Take ranging as an example:

[0157] Ranging is the process of measuring the distance between the transmitter, target, and receiver using wireless signals. As shown in Figure 2, depending on whether the transceiver is in the same location, ranging can be divided into two modes: dual-base ranging (i.e., an implementation of dual-station sensing) and single-base ranging (i.e., an implementation of single-station sensing). In dual-base ranging mode, the measured distance is D = D1 + D2, and in single-base ranging mode, the measured distance is D. In both ranging modes, the distance resolution units corresponding to dual-base and single-base are c / B and c / 2B, respectively, where c ≈ 3×10 8 Meters per second (m / s) represents the speed of light in a vacuum, and B represents the bandwidth of the signal. As can be seen, the larger the bandwidth, the smaller the distance resolution unit, the higher the distance resolution, and the stronger the resolving power.

[0158] Through sensing, multiple scattering points on a target can be measured. The signals from these scattering points (e.g., reflection, diffraction, and scattering) experience time delay differences, which can also manifest as phase differences. In the monostatic ranging scenario shown in Figure 3, assuming the spacing between the scattering points is d, the time delay difference between the signals from two scattering points (e.g., reflection, diffraction, and scattering) is Δτ = 2d / c, where c is the speed of light. The corresponding phase difference is ΔΦ = 2πfΔτ = 4πd / λ, where λ = c / f represents the signal wavelength. If the signals reflected from the two scattering points are denoted as s1(t) and s2(t), respectively, the received signal at the receiver is actually the superposition of s1(t) and s2(t), e.g., s(t) = s1(t) + s2(t).

[0159] If the signal amplitudes of s1(t) and s2(t) are the same, and there is a phase difference ΔΦ between s2(t) and s1(t), then s(t) can be expressed as shown in the following equation (1), and the power P of s(t) can be expressed as shown in the following equation (2): s(t)=s1(t)+s2(t)=(1+e jΔΦ )s1(t),(1) P=|1+e jΔΦ | 2 P1,(2)

[0160] As shown in Figure 4, the normalized power P is obtained by normalizing the power. It fluctuates as the frequency of the received signal changes. At some frequencies, the power P is very small, resulting in severe fading. When the phase difference between s1(t) and s2(t) is 180 degrees, the power of s1(t) and s2(t) cancels each other out, and the received signal energy is minimized.

[0161] In an ideal situation, assuming that there are M scattering points on the observed target, M is a positive integer. If the range resolution is high enough, M scattering points can be distinguished. If the RCS of the mth scattering point is σ m , m traverses from 1 to M, then the power of the received signal corresponding to the mth scattering point detected by the receiver can be That is, the power is proportional to the RCS. However, in actual situations, the range resolution is limited by the bandwidth, and a range resolution unit may contain multiple scattering points. In this case, the power of the received signal detected on the i-th range resolution unit is It can be expressed as shown in the following formula (3):

[0162] At this time, since the phases corresponding to these multiple scattering points may be different or even opposite, the energy of the signals corresponding to these multiple scattering points is weakened after superposition, that is, RCS fading.

[0163] There are multiple ways to send sensing signals. One method involves sending the sensing signal over a single continuous frequency band, also known as single-band sensing, and another involves sending the sensing signal over multiple non-contiguous (or discrete) frequency bands, also known as multi-band sensing. As shown in Figure 5, the total bandwidth corresponding to the sensing signal is B0 (with the center frequency f0). This total bandwidth B0 can be allocated to a single frequency band (single-band sensing), or it can be allocated to multiple discrete frequency bands (multi-band sensing), such as bandwidth B1 (center frequency f1), bandwidth B2 (center frequency f2), bandwidth B3 (center frequency f3), and bandwidth B4 (center frequency f4). Single-band sensing has a larger bandwidth than each frequency band in multi-band sensing, resulting in higher range resolution and the ability to resolve more scattering points compared to multi-band sensing. However, its higher range resolution means that the distance d between two distinguishable scattering points is smaller, resulting in a slower phase change rate of the perceived signal. A scattering point may still be in the RCS fading region within the corresponding range resolution unit, leading to missed detection. For multi-band sensing, the probability of simultaneous RCS fading for the same scattering point across multiple bands is relatively low. However, due to the relatively small bandwidth of each band, the range resolution is lower, making it impossible to distinguish more scattering points.

[0164] It can be understood from the above introduction to CA that if multiple frequency bands can be coherently combined to achieve higher range resolution, more scattering points can be distinguished, improving perception performance. However, due to the phase difference between the perception signals of multiple frequency bands, they cannot be coherently combined. For example, as shown in Figure 6, carrier component CC1 (Carrier component)-baseband (BB) represents the baseband signal corresponding to the first subband, CC2-BB represents the baseband signal corresponding to the second subband, and so on. The transmitter converts the baseband signal into an analog signal through a digital-to-analog converter (DAC). The analog signal is converted into an intermediate frequency (IF) signal through frequency conversion. The IF signal is then up-converted to a radio frequency (RF) signal. The RF signal is then transmitted through the antenna over the air interface. The receiver receives the RF signal through the antenna, down-converts it to an IF signal, and then samples it through an analog-to-digital converter (ADC) to obtain the baseband signal. It can be seen that different sub-bands go through the DAC, ADC, up-conversion, down-conversion, and RF processing of different modules / circuits. The phase and system delay between different modules / circuits may not be completely consistent, resulting in phase and delay differences in the signals corresponding to different sub-bands.

[0165] In FIG6 , the RFs and antennas corresponding to different CCs may be the same or different, and this is not limited.

[0166] For example, the kth sub-band takes the 1st sub-band as a reference, and k is an integer greater than 1. The phase of the perception signal S1 received at the center frequency of the 1st sub-band is 2πf1τ+2πf1τ1, and the phase of the perception signal Sk received at the center frequency of the kth sub-band is 2πf k τ+2πf k τ k +Δφ k . Among them, f1 is the center frequency of the first sub-band, f k is the center frequency of the kth subband, τ is the air interface transmission delay caused by the same scattering point, such as the delay required for the perception signal to be transmitted from the transmitter to the scattering point and then scattered from the scattering point to the receiver, Δφ k is the phase difference of the kth subband relative to the 1st subband, τ1 is the system delay of the 1st subband, τ k is the system delay of the kth subband. Then, the phase difference between the two perception signals is 2π(f k -f1)τ+2πf k τ k -2πf1τ1+Δφ k If the two subbands have no phase difference or system delay, they can be combined to create a large bandwidth. By measuring the phase difference between the two sensing signals, the air interface transmission delay at the scattering point can be determined. However, since the phase difference and system delay between different subbands are unknown, it is impossible to combine the subbands to create a large bandwidth, determine the air interface transmission delay, and thus achieve ranging. Therefore, how to aggregate different subbands to increase the effective sensing bandwidth and improve distance resolution is a question worth studying.

[0167] In response to the above technical problems, the embodiments of the present application propose the following technical solutions.

[0168] The technical solution in this application will be described below with reference to the accompanying drawings.

[0169] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as wireless network (Wi-Fi) systems, ultra-wide band (UWB) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, Internet of Vehicles (IoV) communication systems, fourth-generation (4G) mobile communication systems, such as long-term evolution (LTE) systems, world-wide interoperability for microwave access (WiMAX) communication systems, 5G, such as NR systems, and future communication systems (5.5G, 6G), etc.

[0170] In the embodiment of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information (such as the first indication information, the second indication information, or the third indication information below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein the other information and the information to be indicated have an association relationship. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can be achieved by means of the arrangement order of each information agreed in advance (such as specified in the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each information can be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0171] In addition, the specific indication method can also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can be referred to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, there may be a situation where the indication methods for different information are different. In the specific implementation process, the required indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0172] It should be understood that the information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in the embodiments of this application. The sending period and / or sending time of these sub-information can be predefined, for example, predefined according to a protocol, or can be configured by the transmitting device by sending configuration information to the receiving device.

[0173] "Pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and the embodiments of the present application do not limit the specific implementation method. Among them, "saving" can mean saving in one or more memories. The one or more memories can be set separately or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories can also be partially set separately and partially integrated in a decoder, a processor, or a communication device. The type of memory can be any form of storage medium, and the embodiments of the present application do not limit this.

[0174] The "protocol" involved in the embodiments of the present application may refer to a protocol family in the communication field, a standard protocol with a similar protocol family frame structure, or a related protocol used in future communication systems. The embodiments of the present application do not make specific limitations on this.

[0175] In the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will perform corresponding processing under certain objective circumstances. It does not limit the time, nor does it require the device to perform judgment actions when implemented, nor does it mean that there are other limitations.

[0176] In the description of the embodiments of the present application, unless otherwise specified, " / " indicates that the objects associated with each other are in an "or" relationship. For example, A / B can represent A or B. "And / or" in the embodiments of the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, in the description of the embodiments of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with basically the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0177] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0178] To facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application is first described in detail using the communication system shown in Figure 7 as an example. For example, Figure 7 is a schematic diagram of the architecture of a communication system applicable to the communication method provided in the embodiments of the present application.

[0179] As shown in Figure 7, the communication system may include at least one communication device, such as a first communication device and a second communication device. The first communication device and the second communication device may be different communication devices, as in the aforementioned scenario where A transmits and B receives. The first communication device and the second communication device may be the same communication device, as in the aforementioned scenario where both transmission and reception are independent.

[0180] The first communication device or the second communication device may be a terminal or a network device.

[0181] A terminal may also be called user equipment (UE), an access terminal, a subscriber unit, a user station, a mobile station (MS), a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The terminal in the embodiments of the present application can be a mobile phone, a cellular phone, a smart phone, a tablet computer, a wireless data card, a personal digital assistant (PDA), a wireless modem, a handheld device (handset), a laptop computer, a machine type communication (MTC) terminal, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a smart home device (for example, a refrigerator, a television, an air conditioner, an electric meter, etc.), an intelligent robot, a robotic arm, a workshop equipment, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a vehicle-mounted terminal, a roadside unit with terminal function, or a wireless terminal in a smart city. The terminal device of the present application may also be an onboard module, onboard module, onboard component, onboard chip or onboard unit built into a vehicle as one or more components or units. The terminal device may also be other devices with terminal functions, for example, the terminal device may also be a device that functions as a terminal in D2D communication.

[0182] The embodiments of this application do not limit the device form factor of the terminal. The device used to implement the terminal's function can be a terminal; it can also be a device that supports the terminal in implementing the function, such as a chip system. The device can be installed in the terminal or used in conjunction with the terminal. In the embodiments of this application, the chip system can be composed of a chip or include a chip and other discrete components.

[0183] The network device may be a radio access network (RAN) device, also known as an access network device. The access network device may specifically be a next-generation mobile communication system, such as a 6G access network device, such as a 6G base station, or in the next-generation mobile communication system, the access network device may also have other naming methods, all of which are included in the protection scope of the embodiments of the present application, and the present application does not impose any restrictions on this. Alternatively, the access network device may also include 5G, such as a gNB in ​​a new radio (NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in 5G, or a network node constituting a gNB, a transmission point (TRP or transmission point, TP) or a transmission measurement function (TMF), such as a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), an RSU with base station function, or a wired access gateway, or a 5G core network element, etc. Alternatively, the access network device may also include: an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, wearable devices, vehicle-mounted devices, etc.

[0184] Among them, the CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). It can be understood that the network device can be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into a network device in the access network RAN, or the CU can be divided into a network device in the core network CN, and there is no limitation here.

[0185] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0186] In a communication system, for the same perceived target, a first communication device can act as a control end and use both single-band sensing (e.g., sending a first signal on a first frequency band) and multi-band sensing (e.g., sending a second signal on M non-contiguous second frequency bands). This allows the receiving device (e.g., the second communication device) to use the single-band sensing results to perform coherent multi-band synthesis on the multi-band sensing to obtain a more accurate sensing result.

[0187] Figure 8 is a flow chart of a communication method provided in an embodiment of the present application. The communication method is applicable to the above-mentioned communication system and mainly involves interaction between a first communication device and a second communication device.

[0188] As shown in Figure 8, the process of the communication method is as follows:

[0189] S801: A first communication device sends a first signal in a first frequency band. Correspondingly, a second communication device receives a third signal in the first frequency band.

[0190] The frequency domain resources of the first frequency band are continuous, and the bandwidth is larger than the bandwidth of the second frequency band below. Compared with using the second frequency band for perception, using the first frequency band for perception can have higher perception accuracy, or higher distance resolution. Among them, the first frequency band can be a frequency band supported by both the first communication device and the second communication device. The first communication device and the second communication device can use the first frequency band by default (as defined by the protocol), or they can be instructed by other devices to use the first frequency band for signal transmission and reception. For details, please refer to the relevant introduction below for signal transmission and reception, which will not be repeated here.

[0191] Both the first signal and the third signal can be used for sensing, and can also be referred to as sensing signals, or any other possible terminology, without limitation. The difference is that the first signal is the signal transmitted by the first communication device, while the third signal is the echo signal of the first signal after it is affected by a sensing target. Specifically, it can be the signal formed by the first signal being affected (reflected, diffracted, scattered, etc.) by scattering points in space during transmission. A scattering point is a set of points on a sensing target in space (such as a vehicle), specifically points where electromagnetic waves emitted from space can be transmitted, diffracted, scattered, etc., and the signal is received by the receiving end. The first signal can be used to determine the time delay of the scattering points. That is, the second communication device can determine the time delay of each of N scattering points based on the received third signal, where N is a positive integer. The N scattering points can be distributed within multiple range resolution units. That is, the second communication device can observe at least one scattering point within a range resolution unit, for a total of N scattering points. The time delay of each of the N scattering points may be the time delay required for a signal sent by the second communication device or a communication device other than the second communication device (such as the first communication device) to propagate through the N scattering points to the second communication device.

[0192] For ease of understanding, taking the lth scattering point among N scattering points as an example, l is any integer from 1 to N.

[0193] The time required for the first signal to be transmitted by the first communication device and propagate to the lth scattering point is τ l1 The time required for the third signal scattered by the lth scattering point to propagate from the lth scattering point to the second communication device is τ l2 , then the time delay of the lth scattering point is τ l =τ l1 +τ l2 The second communication device may determine the time delay of the lth scattering point according to the time when the first communication device transmits the first signal and the time when the second communication device receives the third signal scattered by the lth scattering point.

[0194] It can be understood that the signal strength of the signal corresponding to the lth scattering point (i.e., the third signal) is greater than the strength threshold, and the signal strengths corresponding to the other scattering points are less than or equal to the strength threshold. The other scattering points may be scattering points other than the lth scattering point within the lth range resolution unit in which the lth scattering point is located. That is, within the lth range resolution unit, typically only the lth scattering point has a signal strength greater than the strength threshold. This point can be considered an isolated point, or a strong scattering point, within the lth range resolution unit. When the second communication device observes the lth scattering point within the lth range resolution unit, the energy of the lth scattering point can dominate, thereby enabling a more accurate measurement of the scattering point. Therefore, the N scattering points are all isolated points within their respective range resolution units. Of course, there may be only the lth scattering point and no other scattering points within the lth range resolution unit.

[0195] In practice, the second communications device can also observe scattering points other than the N scattering points based on the third signal. These scattering points have signal intensities less than or equal to the intensity threshold, or these scattering points are multiple scattering points within the same range resolution unit whose signal intensities are greater than the intensity threshold. In other words, after observing multiple scattering points based on the third signal, the second communications device can determine isolated points within the range resolution unit from these points, so that coherent combination can be performed using the time delays of these isolated points in subsequent steps (e.g., S802).

[0196] It can also be understood that the second communication device can also determine parameters such as the position, movement direction, and movement speed of the lth scattering point. For details, please refer to the relevant introduction in "Skolnik M I. Radar handbook [J]. 1970.", which will not be repeated here.

[0197] S802: The first communication device sends a second signal on M non-contiguous second frequency bands. Correspondingly, the second communication device receives a fourth signal on the M non-contiguous second frequency bands.

[0198] The frequency domain resources of each second frequency band are continuous, and the frequency domain resources of different second frequency bands are discontinuous. For example, the frequency domain resources included in the second frequency band #1 are frequency points #1 to frequency points #2, and the frequency domain resources included in the second frequency band #2 are frequency points #3 to frequency points #4. There are also frequency domain resources between frequency points #2 and #3, that is, the second frequency band #1 and the second frequency band #2 are discontinuous frequency bands. The bandwidth of each second frequency band can be relatively small, such as smaller than the bandwidth of the above-mentioned first frequency band, so the requirements for continuous frequency domain resources are not high, ensuring that the current frequency domain resources can meet the bandwidth requirements of each second frequency band. The first communication device and the second communication device can use M second frequency bands for signal transmission and reception by default, or they can be instructed by other devices to use M second frequency bands for signal transmission and reception. For details, please refer to the relevant introduction below, which will not be repeated here.

[0199] The second signal and the fourth signal may also both be signals used for perception, and may also be referred to as perception signals, or any other possible names, without limitation. The difference is that the second signal is a signal emitted by the first communication device, and the fourth signal is an echo signal of the second signal after being acted upon by a perception target, specifically a signal formed when the second signal is acted upon by scattering points in space (such as reflection, diffraction, scattering, etc.) during transmission. The second signal may be used to coherently synthesize at least two of the M second frequency bands, that is, the second communication device may coherently synthesize at least two of the M second frequency bands based on the received fourth signal, as described in detail in S803 below.

[0200] S803: The second communication device performs perception processing according to the third signal and the fourth signal.

[0201] Among them, the second communication device can perform perception processing of coherently combining M second frequency bands based on the third signal and the fourth signal, such as coherently combining into a frequency band with a larger bandwidth than the first frequency band, which can achieve enhanced perception capability and improved perception performance. For example, the second communication device can determine the system delay of at least two second frequency bands in the M second frequency bands and / or the phase difference between at least two second frequency bands based on the third signal and the fourth signal. Then, the second communication device performs perception processing of coherently combining at least two second frequency bands based on the system delay of at least two second frequency bands and / or the phase difference between at least two second frequency bands.

[0202] It is understandable that signals on different second frequency bands may experience phase differences during transmission and reception due to different system hardware processing, and different system hardware may also produce different system delays. Therefore, as long as the phase difference between two different frequency bands and their respective system delays can be determined, phase and / or system delay calibration can be achieved, thereby coherently combining the two different frequency bands to improve perceptual performance.

[0203] Optionally, the at least two second frequency bands may include an i-th second frequency band and a j-th second frequency band. For ease of understanding, the following is introduced by taking the coherent synthesis of the i-th second frequency band and the j-th second frequency band as an example.

[0204] Assumption: the fourth signal received on M second frequency bands includes the i-th fourth signal and the j-th fourth signal, the i-th fourth signal is the signal received on the i-th second frequency band, the j-th fourth signal is the signal received on the j-th second frequency band, i and j are different, and i and j are any integers from 1 to M.

[0205] The second communication device can determine the phase difference and / or system delay between the i-th second frequency band and the j-th second frequency band based on the respective delays of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal. In the scenario where A transmits and B receives, different communication devices (that is, the first communication device and the second communication device are different devices) can constitute a transceiver system. Alternatively, in the scenario of self-transmission and self-reception, the same communication device (that is, the first communication device and the second communication device are the same device) can constitute a transceiver system by itself. Therefore, the phase difference between the i-th second frequency band and the j-th second frequency band can be: the difference between the phase offset generated by the transceiver system processing the signal on the i-th second frequency band and the phase offset generated by the transceiver system processing the signal on the j-th second frequency band. The specific implementation principle can refer to the relevant introduction of Figure 6 above, which will not be repeated here. The above-mentioned system delay may include the first system delay and the second system delay. The first system delay can be the delay generated by the transceiver system processing the signal in the i-th second frequency band. Similarly, the second system delay can be the delay generated by the transceiver system processing the signal in the j-th second frequency band. The specific implementation principle can also be referred to the relevant introduction of Figure 6 above, and will not be repeated here.

[0206] Exemplarily, at least one of the phase difference between the i-th second frequency band and the j-th second frequency band and the system delay, the delay of each of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal may satisfy the relationship shown in the following equation (4):

[0207] In the above formula (4), It can be the difference between the phase of the i-th fourth signal corresponding to the l-th scattering point and the phase of the j-th fourth signal corresponding to the l-th scattering point. The i-th fourth signal corresponding to the l-th scattering point can be understood as the i-th fourth signal being a signal that has passed through the l-th scattering point, and the second communication device can measure the phase of the i-th fourth signal. Similarly, the j-th fourth signal corresponding to the l-th scattering point can be understood as the j-th fourth signal being a signal that has passed through the l-th scattering point, and the second communication device can measure the phase of the j-th fourth signal.

[0208] In the above formula (4), f i It can be the center frequency of the i-th second frequency band, which can be understood as the second communication device receiving the i-th fourth signal corresponding to the l-th scattering point at the center frequency of the i-th second frequency band. It can also be replaced by any possible frequency of the i-th second frequency band without limitation. Similarly, f jIt can be the center frequency of the jth second frequency band. It can be understood that the second communication device can receive the jth fourth signal corresponding to the lth scattering point at the center frequency of the jth second frequency band. It can also be replaced by any possible frequency of the jth second frequency band without limitation.

[0209] In the above formula (4), τ l It can be the time delay of the lth scattering point among the N scattering points, which can be the time delay determined in S801, or it can be the time delay predicted by the second communication device. For example, the second communication device can measure the position, movement direction, and movement speed of the lth scattering point in S801. Based on this, the second communication device can estimate the position to which the lth scattering point may move based on the time difference between receiving the third signal and the fourth signal, and accordingly estimate the time delay of the lth scattering point. In addition, τ i can be the first system delay, τ j can be the second system delay, Δφ ij It can be the phase difference between the i-th second frequency band and the j-th second frequency band.

[0210] It can be seen that signals on different second frequency bands will produce phase differences during the transmission and reception process after being processed by different system hardware, and different system hardware will also produce different system delays. For two frequency bands, such as the i-th second frequency band and the j-th second frequency band, the first system delay, the second system delay, and the phase difference between the i-th second frequency band and the j-th second frequency band are all unknown quantities in equation (4). Therefore, if N ≥ 3, that is, the delays of scattering points 1, 2, and 3 are known, the specific values ​​of the first system delay, the second system delay, and the phase difference between the i-th second frequency band and the j-th second frequency band can be obtained by jointly solving more than three equations (4).

[0211] It can be understood that the above takes the i-th second frequency band and the j-th second frequency band as an example, and it is also possible to implement coherent synthesis of different or more frequency bands, which will not be described in detail here.

[0212] It can also be understood that the above example uses the case where different frequency bands not only have phase differences but also different system delays, but is not intended to be limiting. If only phase differences exist between different frequency bands, but the system delays are the same, then equation (4) can be used to solve only the phase differences, and the number of scattering points required can be at least one. If there is no phase difference between different frequency bands, but the system delays are different, then equation (4) can be used to solve only the system delay, and the number of scattering points required can be at least two.

[0213] If the second communication device determines the phase difference and / or system delay between the i-th second frequency band and the j-th second frequency band, the second communication device can coherently combine the i-th second frequency band and the j-th second frequency band based on the phase difference and / or system delay to obtain the time delays of each of the K scattering points. For example, the second communication device can use the phase difference and / or system delay to jointly solve the fourth signal received on the i-th second frequency band and the j-th second frequency band, such as by direct pulse compression synthesis, frequency domain interpolation, compressed sensing, etc., to obtain the time delays of each of the K scattering points. In this case, jointly solving the fourth signal received on the i-th second frequency band and the j-th second frequency band is the coherent combination of the i-th second frequency band and the j-th second frequency band. Where K is an integer greater than N, and the time delays of each of the K scattering points can be the time delay required for the signal to propagate from the second communication device or a communication device other than the second communication device (such as the first communication device) to the second communication device after being affected (reflected, diffracted, scattered, etc.) by the K scattering points. That is, the second communication device obtains a larger bandwidth through coherent combining, and can measure K more scattering points (K>N) than before, so as to improve the perception performance.

[0214] For example, for the same target object, such as a vehicle, if the second communication device can observe 200 scattering points on the target object in the first frequency band, then after coherently combining at least two second frequency bands into a frequency band with a larger bandwidth than the first frequency band, the second communication device can observe 350 scattering points on the target object in the coherently combined frequency band, making the perception of the target object clearer and being able to more accurately determine the shape, position, movement speed and direction of the target object.

[0215] In summary, the first communication device can send signals for perception in different stages, such as sending signals on a single frequency band in the first stage, such as the first signal, and sending signals on non-continuous multiple frequency bands in the second stage, such as the second signal. Accordingly, the second communication device can use the perception results obtained from the first stage measurement, such as the delay of the scattering point, to calibrate the phase and / or system delay of the signals received on the multiple frequency bands in the second stage, thereby achieving coherent synthesis of multiple frequency bands into a larger bandwidth. This not only improves the distance resolution, but the multi-band measurement can also effectively resist the influence of RCS fluctuations and improve the perception detection performance.

[0216] In combination with the above method, the above-mentioned transceiver mechanism, such as whether the first communication device sends signals on the first frequency band and M second frequency bands, and whether the second communication device receives signals on the first frequency band and M second frequency bands, can be determined by the first communication device, or by the second communication device, or by the third communication device, which are introduced below respectively.

[0217] In a first possible design, as shown in FIG9 , the transceiver mechanism is determined by the second communication device, and the second communication device and the third communication device may be the same device. The method further includes:

[0218] S901: A first communication device sends capability information to a second communication device. Correspondingly, the second communication device receives the capability information of the first communication device.

[0219] The capability information of the first communication device (recorded as first capability information) can be used to indicate the frequency band supported by the first communication device, and the frequency band supported by the first communication device includes a first frequency band and M second frequency bands. For example, the first capability information may include the frequency and bandwidth of the frequency band supported by the first communication device. The frequency may be a center frequency or an endpoint frequency band, or it may be any frequency pre-configured by the first communication device and the second communication device or pre-defined by the protocol, and there is no limitation on this. The frequency and bandwidth of the frequency band supported by the first communication device can be combined to determine the frequency domain resources contained in the frequency band.

[0220] It is understood that the frequency and bandwidth of the frequency band supported by the first communication device are optional information elements. If the second communication device knows the frequency by default, the first capability information may include the bandwidth but not the frequency. If the second communication device knows the bandwidth by default, the first capability information may also include the frequency but not the bandwidth.

[0221] The first communication device can report the first capability information on its own at any possible time, such as when the first communication device establishes a connection with the second communication device. Alternatively, the first communication device can report the first capability information based on an instruction from the second communication device. For example, the second communication device can send first capability reporting instruction information to the first communication device at any possible time, such as when the first communication device establishes a connection with the second communication device, to instruct the first communication device to report its own capabilities. In this way, the first communication device can send the first capability information to the second communication device based on the first capability reporting instruction information.

[0222] It is also understandable that S901 may be executed before S801. Alternatively, if the second communication device knows the frequency band supported by the first communication device by default, S901 may not be executed.

[0223] S902: The second communication device sends first configuration information to the first communication device. Correspondingly, the first communication device receives the first configuration information from the second communication device.

[0224] The first configuration information can be carried in a radio resource control (RRC) message, a downlink control information (DCI) message, an uplink control information (UCI) message, or any other possible message, and is used to instruct the first communication device to send a signal on the first frequency band, such as periodically sending a signal or triggering a signal, which are introduced below.

[0225] In a first possible implementation manner, the first configuration information may be used to instruct the first communication device to periodically send a signal in a first frequency band, such as the first signal mentioned above.

[0226] Exemplarily, the first configuration information may include at least one of the following: the frequency of the first frequency band, the bandwidth of the first frequency band, or the period for the first communication device to send signals on the first frequency band. The frequency of the first frequency band may be a center frequency or an endpoint frequency band, or may be any frequency pre-configured by the first communication device and the third communication device or pre-defined by the protocol, without limitation. The frequency of the first frequency band and the bandwidth of the first frequency band can be combined to determine the frequency domain resources contained in the first frequency band, so that the first communication device can use these frequency domain resources to send signals according to the period.

[0227] The second communication device may determine the bandwidth based on the possible size of the perceived target. For example, the bandwidth BW (bandwidth) satisfies the following relationship: c / BW

[0228] It is understood that the frequency and bandwidth of the first frequency band, as well as the period for transmitting signals on the first frequency band, are optional information elements. If the first communication device knows the frequency of the first frequency band by default, the bandwidth and period may be indicated without indicating the frequency. If the first communication device knows the bandwidth of the first frequency band by default, the frequency and period may also be indicated without indicating the bandwidth, and so on. No further explanation is given.

[0229] In this way, the first communication device can periodically perform S801, or phase 1, based on the received first configuration information, as specifically shown in FIG. 10 , in which the first signal is sent on four consecutive CCs, such as CC1, CC2, CC3, and CC4.

[0230] In a second possible implementation manner, the first configuration information may be used to trigger the first communication device to send a signal in the first frequency band.​

[0231] Exemplarily, the first configuration information may include at least one of the following: the frequency of the first frequency band, or the bandwidth of the first frequency band. The specific implementation principle is similar to the first possible implementation method described above and can be understood with reference to it, but the difference lies in the timing when the second communication device sends the first configuration information. For example, if the second communication device has not performed a sensing operation for a certain target object, the second communication device may send the first configuration information to the first communication device, that is, S902 may be performed after S901 and before S801. For another example, if the second communication device has performed a sensing operation for a certain target object, the second communication device may send the first configuration information to the first communication device when the M second frequency bands cannot be coherently combined (such as when the scattering point changes, resulting in the above-mentioned phase difference and / or system delay cannot be determined), that is, S902 may be performed after S802.

[0232] In this way, the first communications device can transmit the first signal on the first frequency band according to the first configuration information and execute S801. That is, the transmission of the first signal on the first frequency band by the first communications device can be triggered by receiving the first configuration information, thereby enabling on-demand transmission and avoiding wasting communication resources by transmitting signals even when no perception is required. Of course, the triggering method is not limited to the first configuration information and can also be other information different from the first configuration information, such as first indication information. In this case, if the first communications device receives the first indication information, it will transmit the first signal on the first frequency band.

[0233] S903: The second communication device sends second configuration information to the first communication device. Correspondingly, the first communication device receives the second configuration information from the second communication device.

[0234] The second configuration information can also be carried in an RRC message, a DCI message, a UCI message or any other possible message, used to instruct the first communication device to send signals on M second frequency bands, such as periodically sending signals or triggering sending signals, which are introduced below.

[0235] In a third possible implementation manner, the second configuration information may be used to instruct the first communication device to periodically send a signal on M second frequency bands, such as the second signal described above.

[0236] Exemplarily, the second configuration information may include at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands. The frequency point of each second frequency band may be a center frequency point or an endpoint frequency band, or may be any frequency point pre-configured by the first communication device and the third communication device or pre-defined by the protocol, and there is no limitation on this. The frequency point of each second frequency band and the bandwidth of the second frequency band can be combined to determine the frequency domain resources contained in the second frequency band, so that the first communication device can use these non-continuous frequency domain resources to send signals according to the period.

[0237] The second communication device can determine the frequency bands supported by both the first communication device and the second communication device based on the frequency bands supported by the first communication device and the frequency bands supported by the second communication device. The second communication device can determine M second frequency bands based on the number of pre-configured frequency domain resources used for sensing, such as the number of sub-carriers or the number of carriers, and the frequency bands supported by both the first communication device and the second communication device, such as the number of frequency domain resources corresponding to the total bandwidth of the M second frequency bands is less than or equal to the number of pre-configured frequency domain resources, and the M second frequency bands are frequency bands supported by both the first communication device and the second communication device. In addition, the number of M second frequency bands can be pre-configured or pre-defined, and there is no specific limitation on this.

[0238] It is understood that the frequency and bandwidth of any second frequency band, as well as the period for transmitting signals on the second frequency band, are optional information elements. If the first communication device knows the frequency of the second frequency band by default, then only the bandwidth and period can be indicated. If the first communication device knows the frequency band of the second frequency band by default, then only the frequency band and period can be indicated. And so on, which will not be further described.

[0239] In this way, the first communication device can periodically execute S802, or Phase 2, based on the received second configuration information. Specifically, as shown in FIG10 , it can transmit the second signal on four non-contiguous CCs, such as CC5, CC6, CC7, and CC8. In this way, even if the target object is constantly moving, by continuously alternating between Phase 1 and Phase 2, the second communication device can continuously calibrate the phase and / or system delay, thereby continuously sensing the target object with high precision.

[0240] In a fourth possible implementation manner, the second configuration information may be used to trigger the first communication device to send signals on M second frequency bands.

[0241] Exemplarily, the second configuration information may include at least one of the following: the frequency of each of the M second frequency bands, or the bandwidth of each of the M second frequency bands. The specific implementation principle is similar to the third possible implementation described above and can be understood with reference thereto, but differs in the timing of when the second communication device transmits the second configuration information. For example, if the second communication device has not performed a sensing operation for a target object, the second communication device may transmit the second configuration information to the first communication device. That is, S903 may be performed after S901 and before S802. For another example, if the second communication device has performed a sensing operation for a target object, the second communication device may determine whether the number of scattering points (or strong scattering points) observed on the first frequency band is greater than a preset threshold. For example, if two second frequency bands are to be coherently combined, and there is a phase difference and a system delay between the two second frequency bands, the preset threshold may be 2. In other words, observing at least three strong scattering points on the first frequency band can be used to subsequently coherently combine the two second frequency bands.

[0242] Therefore, if the number of scattering points observed by the second communication device on the first frequency band is greater than a preset threshold, the second communication device sends second configuration information to the first communication device, i.e., S903 is executed after S801. In this way, the first communication device can transmit the second signal on the M second frequency bands based on the second configuration information, i.e., execute S801. In other words, the transmission of the second signal by the first communication device on the M second frequency bands can be triggered by receiving the second configuration information, thereby achieving on-demand transmission and avoiding wasting communication resources by transmitting signals when no perception is required. Of course, the triggering method is not limited to the second configuration information and can also be other information different from the second configuration information, such as second indication information. In this case, if the first communication device receives the second indication information, it will transmit the second signal on the M second frequency bands.

[0243] If the number of scattering points observed by the second communication device on the first frequency band is less than or equal to the preset threshold, the second communication device returns to execute S901 to trigger the first communication device to continue executing S801. Alternatively, if the first communication device periodically executes S801, the second communication device may wait until the next period and then determine whether the number of scattering points observed on the first frequency band is greater than the preset threshold.

[0244] It can be understood that the first configuration information and the second configuration information can be sent together, such as carried in the same signaling or message, or can be sent separately, such as carried in different signaling or messages, without specific limitation.

[0245] In a second possible design, as shown in FIG11 , the transceiver mechanism is determined by the first communication device, and the first communication device and the third communication device may be the same device. The method further includes:

[0246] S1101: A second communication device sends capability information to a first communication device. Correspondingly, the first communication device receives the capability information of the second communication device.

[0247] The capability information of the second communication device (recorded as second capability information) can be used to indicate the frequency band supported by the second communication device, and the frequency band supported by the second communication device includes the first frequency band and M second frequency bands. For example, the second capability information may include the frequency and bandwidth of the frequency band supported by the first communication device. The frequency may be a center frequency or an endpoint frequency band, or it may be any frequency pre-configured by the first communication device and the second communication device or pre-defined by the protocol, and there is no limitation on this. The frequency and bandwidth of the frequency band supported by the second communication device can be combined to determine the frequency domain resources contained in the frequency band.

[0248] It is understood that the frequency and bandwidth of the frequency band supported by the second communication device are optional information elements. If the first communication device knows the frequency by default, the second capability information may include the bandwidth but not the frequency. If the first communication device knows the bandwidth by default, the second capability information may also include the frequency but not the bandwidth.

[0249] The second communication device can report the second capability information on its own at any possible time, such as when the first communication device establishes a connection with the second communication device. Alternatively, the second communication device can report the second capability information based on an instruction from the first communication device. For example, the first communication device can send second capability reporting instruction information to the second communication device at any possible time, such as when the first communication device establishes a connection with the second communication device, to instruct the second communication device to report its own capabilities. In this way, the second communication device can send the second capability information to the first communication device based on the second capability reporting instruction information.

[0250] It is also understandable that S1101 may be executed before S801. Alternatively, if the second communication device knows the frequency band supported by the first communication device by default, S1101 may not be executed.

[0251] S1102: The second communication device sends third configuration information to the second communication device. Correspondingly, the second communication device receives the third configuration information from the first communication device.

[0252] The third configuration information may be carried in an RRC message, a DCI message, a UCI message, or any other possible message, and is used to instruct the second communication device to receive signals on the first frequency band. For example, the third configuration information may include at least one of the following: the frequency of the first frequency band, the bandwidth of the first frequency band, or the period for the second communication device to receive signals on the first frequency band. The specific implementation principle is similar to the first possible implementation method described above, and can be understood by reference, and will not be repeated here.

[0253] It is understood that the frequency and bandwidth of the first frequency band, as well as the period for transmitting signals on the first frequency band, are optional information elements. If the second communication device knows the frequency of the first frequency band by default, the bandwidth and period may be indicated without indicating the frequency. If the second communication device knows the bandwidth of the first frequency band by default, the frequency and period may also be indicated without indicating the bandwidth, and so on. No further explanation is given.

[0254] In this way, the second communication device may periodically execute S801 according to the received third configuration information.

[0255] S1103: The first communication device sends fourth configuration information to the second communication device. Correspondingly, the second communication device receives the fourth configuration information from the first communication device.

[0256] The fourth configuration information may be carried in an RRC message, a DCI message, a UCI message, or any other possible message, to instruct the second communication device to receive signals on the M second frequency bands. For example, the fourth configuration information may include at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands. The specific implementation principle is similar to the third possible implementation method mentioned above, and can be understood by reference, and will not be repeated here.

[0257] It is understood that the frequency and bandwidth of any second frequency band, as well as the period for transmitting signals on the second frequency band, are optional information elements. If the second communication device knows the frequency of the second frequency band by default, then only the bandwidth and period can be indicated. If the second communication device knows the frequency band of the second frequency band by default, then only the frequency band and period can be indicated. And so on, which will not be further described.

[0258] In this way, the second communication device may periodically execute S802 according to the received fourth configuration information.

[0259] It can also be understood that the above-mentioned first possible design solution and the second possible design solution are optional solutions. If the first communication device and the second communication device are the same device, these two design solutions may not be executed.

[0260] In a third possible design, as shown in FIG12 , the transceiver mechanism is determined by a third communication device, the third communication device and the second communication device, as well as the third communication device and the first communication device, are different devices. The method further includes:

[0261] S1201: A first communication device sends capability information to a third communication device. Correspondingly, the third communication device receives the capability information from the first communication device.

[0262] Among them, the specific implementation principle of S1201 is similar to that of the above-mentioned S901, which can be used as a reference for understanding and will not be repeated here.

[0263] S1202: The second communication device sends capability information to the third communication device. Correspondingly, the third communication device receives the capability information of the second communication device.

[0264] Among them, the specific implementation principle of S1202 is similar to that of the above-mentioned S1001, which can be understood by reference and will not be repeated here.

[0265] S1203: The third communication device sends first configuration information and second configuration information to the first communication device. Correspondingly, the first communication device receives the first configuration information and second configuration information from the third communication device.

[0266] Among them, the specific implementation principle of S1203 is similar to the first possible implementation method in the above S902 and the third possible implementation method in the above S903, which can be understood by reference and will not be repeated here.

[0267] S1204: The third communication device sends third configuration information and fourth configuration information to the second communication device. Correspondingly, the second communication device receives the third configuration information and fourth configuration information from the third communication device.

[0268] Among them, the specific implementation principle of S1204 is similar to that of the above-mentioned S1002-S1003, which can be used as a reference for understanding and will not be repeated here.

[0269] It can be understood that the third configuration information and the fourth configuration information can be sent together, such as carried in the same signaling or message, or can be sent separately, such as carried in different signaling or messages, without specific limitation.

[0270] It can also be understood that in the third possible design solution, the first communication device and the second communication device may be different devices, or may be the same device, and this is not limited.

[0271] The method provided by the embodiment of the present application is described in detail above in conjunction with Figures 8 to 12. The communication device for performing the rate matching method provided by the embodiment of the present application is described in detail below in conjunction with Figures 13 and 14.

[0272] Figure 13 is a structural diagram of a communication device according to an embodiment of the present application. As shown in Figure 13, the communication device 1300 includes a transceiver module 1301 and a processing module 1302. For ease of illustration, Figure 13 only shows the main components of the communication device.

[0273] The transceiver module 1301 is used to perform the transceiver function of the method shown in FIG. 8 to FIG. 11 , and the processing module 1302 is used to perform other functions of the method shown in FIG. 8 to FIG. 11 except the transceiver function.

[0274] Optionally, the transceiver module 1301 may include a sending module (not shown in FIG13 ) and a receiving module (not shown in FIG13 ). The sending module is used to implement the sending function of the communication device 1300 , and the receiving module is used to implement the receiving function of the communication device 1300 .

[0275] Optionally, the communication device 1300 may further include a storage module (not shown in FIG. 13 ) storing a program or instruction. When the processing module 1302 executes the program or instruction, the communication device 1300 may perform the functions of the terminal or network device in the method shown in FIG. 8 to FIG. 12 in the above method.

[0276] It can be understood that the communication device 1300 can be a terminal or a network device, or a chip (system) or other parts or components that can be set in a terminal or a network device, or a device that includes a terminal or a network device. This application does not limit this.

[0277] In addition, the technical effects of the communication device 1300 can refer to the technical effects of the rate matching method shown in Figures 8 to 11, and will not be repeated here.

[0278] Figure 14 is a second structural diagram of a communication device provided in an embodiment of the present application. Exemplarily, the communication device may be a terminal, or a chip (system) or other component or assembly that can be provided in a terminal. As shown in Figure 14, the communication device 1400 may include a processor 1401. Optionally, the communication device 1400 may further include a memory 1402 and / or a transceiver 1403. The processor 1401 is coupled to the memory 1402 and the transceiver 1403, such as by a communication bus.

[0279] The following is a detailed introduction to the various components of the communication device 1400 with reference to FIG14 :

[0280] The processor 1401 is the control center of the communication device 1400 and can be a single processor or a collective term for multiple processing elements. For example, the processor 1401 can be one or more central processing units (CPUs), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, such as one or more digital signal processors (DSPs) or one or more field programmable gate arrays (FPGAs).

[0281] Optionally, the processor 1401 can execute various functions of the communication device 1400 by running or executing software programs stored in the memory 1402 and calling data stored in the memory 1402, such as executing the communication method shown in Figures 8 to 12 above.

[0282] In a specific implementation, as an embodiment, the processor 1401 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG14 .

[0283] In a specific implementation, as an embodiment, the communication device 1400 may also include multiple processors, such as the processor 1401 and the processor 1404 shown in FIG14 . Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0284] The memory 1402 is used to store the software program for executing the solution of the present application, and the execution is controlled by the processor 1401. The specific implementation method can refer to the above method embodiment and will not be repeated here.

[0285] Alternatively, the memory 1402 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 1402 may be integrated with the processor 1401 or exist independently and be coupled to the processor 1401 via an interface circuit (not shown in FIG. 14 ) of the communication device 1400, which is not specifically limited in this embodiment of the present application.

[0286] Transceiver 1403 is used for communication with other communication devices. For example, if communication device 1400 is a terminal, transceiver 1403 can be used to communicate with a network device or another terminal device. For another example, if communication device 1400 is a network device, transceiver 1403 can be used to communicate with a terminal or another network device.

[0287] Optionally, the transceiver 1403 may include a receiver and a transmitter (not shown separately in FIG14 ), wherein the receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.

[0288] Optionally, the transceiver 1403 can be integrated with the processor 1401, or can exist independently and be coupled to the processor 1401 through the interface circuit of the communication device 1400 (not shown in Figure 14), which is not specifically limited in this embodiment of the present application.

[0289] It is understandable that the structure of the communication device 1400 shown in FIG14 does not constitute a limitation on the communication device, and an actual communication device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0290] In addition, the technical effects of the communication device 1400 can refer to the technical effects of the methods described in the above method embodiments, and will not be repeated here.

[0291] It should be understood that the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0292] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0293] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (such as infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0294] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. A and B can be singular or plural. Furthermore, the character " / " as used herein generally indicates an "or" relationship between the associated objects, but it may also indicate an "and / or" relationship. For specific understanding, please refer to the context.

[0295] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0296] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0297] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0298] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0299] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0300] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0301] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0302] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0303] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: Applied to a first communication device, comprising: The first communication device sends a first signal in a first frequency band; The first communication device sends a second signal on M non-continuous second frequency bands, where M is an integer greater than or equal to 2; wherein the first signal and the second signal are signals used for perception.

2. The method according to claim 1, characterized in that The bandwidth of the first frequency band is greater than the bandwidth of any second frequency band among the M second frequency bands.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: The first communication device receives capability information from the second communication device, where the capability information is used to indicate frequency bands supported by the second communication device, and the frequency bands supported by the second communication device include the first frequency band and the M second frequency bands.

4. The method according to claim 1 or 2, characterized in that: The method further comprises: The first communication device sends capability information to the third communication device, where the capability information is used to indicate frequency bands supported by the first communication device, and the frequency bands supported by the first communication device include the first frequency band and the M second frequency bands.

5. The method according to claim 4, characterized in that The method further comprises: The first communication device receives first configuration information from the third communication device, wherein the first configuration information is used to instruct the first communication device to send a signal on the first frequency band.

6. The method according to claim 5, characterized in that The first configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the first communication device to send a signal on the first frequency band.

7. The method according to any one of claims 4 to 6, characterized in that: The method further comprises: The first communication device receives second configuration information from the third communication device, wherein the second configuration information is used to instruct the first communication device to send signals on the M second frequency bands.

8. The method according to claim 7, characterized in that The second configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands.

9. The method according to claim 3, characterized in that: The method further comprises: The first communication device sends third configuration information to the second communication device, wherein the third configuration information is used to instruct the second communication device to receive signals on the first frequency band.

10. The method according to claim 9, characterized in that The third configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the second communication device to receive signals on the first frequency band.

11. The method according to any one of claims 3, 9 or 10, characterized in that The method further comprises: The first communication device sends fourth configuration information to the second communication device, wherein the fourth configuration information is used to instruct the second communication device to receive signals on the M second frequency bands.

12. The method according to claim 11, characterized in that The fourth configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the second communication device to receive signals on the M second frequency bands.

13. The method according to any one of claims 1 to 12, characterized in that The first signal is used to determine the delay of the scattering point, where the delay of the scattering point is the delay required for the signal sent by the first communication device to propagate through the scattering point to the communication device that receives the signal.

14. The method according to any one of claims 1 to 13, characterized in that The second signal is used to coherently combine at least two second frequency bands among the M second frequency bands.

15. A communication method, characterized in that: Applied to a second communication device, comprising: The second communication device receives a third signal in the first frequency band; The second communication device receives a fourth signal on M non-continuous second frequency bands, where M is an integer greater than or equal to 2; The second communication device performs sensing processing according to the third signal and the fourth signal.

16. The method according to claim 15, characterized in that The bandwidth of the first frequency band is greater than the bandwidth of any second frequency band among the M second frequency bands.

17. The method according to claim 15 or 16, characterized in that The second communication device performs perception processing according to the third signal and the fourth signal, including: The second communication device performs perception processing of coherently synthesizing the M second frequency bands according to the third signal and the fourth signal.

18. The method according to claim 17, characterized in that The second communication device performs a perceptual process of coherently combining the M second frequency bands according to the third signal and the fourth signal, including: The second communication device determines, according to the third signal and the fourth signal, a system delay of each of at least two second frequency bands of the M second frequency bands and / or a phase difference between the at least two second frequency bands; The second communication device performs a perceptual process of coherently combining the at least two second frequency bands according to the system delays of the at least two second frequency bands and / or the phase difference between the at least two second frequency bands.

19. The method according to any one of claims 15 to 18, characterized in that The method further comprises: The second communication device receives capability information from the first communication device, where the capability information is used to indicate frequency bands supported by the first communication device, and the frequency bands supported by the first communication device include the first frequency band and the M second frequency bands.

20. The method according to any one of claims 15 to 18, characterized in that The method further comprises: The second communication device sends capability information to the third communication device, where the capability information is used to indicate frequency bands supported by the second communication device, and the frequency bands supported by the second communication device include the first frequency band and the M second frequency bands.

21. The method according to claim 19, characterized in that The method further comprises: The second communication device sends first configuration information to the first communication device, wherein the first configuration information is used to instruct the first communication device to send a signal on the first frequency band.

22. The method according to claim 21, characterized in that The first configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the first communication device to send a signal on the first frequency band.

23. The method according to claim 21 or 22, characterized in that The second communication device sends first configuration information to the first communication device, including: When the M second frequency bands cannot be coherently synthesized, the second communication device sends the first configuration information to the first communication device.

24. The method according to any one of claims 19, or 21-23, characterized in that: The method further comprises: The second communication device sends second configuration information to the first communication device, wherein the second configuration information is used to instruct the first communication device to send signals on the M second frequency bands.

25. The method according to claim 24, characterized in that The second configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands.

26. The method according to claim 25, characterized in that The second communication device sends second configuration information to the first communication device, including: When the number of scattering points observed by the second communication device on the first frequency band is greater than a preset threshold, the second communication device sends the second configuration information to the first communication device.

27. The method according to claim 20, characterized in that The method further comprises: The second communication device receives third configuration information from the third communication device, wherein the third configuration information is used to instruct the second communication device to receive signals in the first frequency band.

28. The method according to claim 27, characterized in that The third configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the second communication device to receive signals on the first frequency band.

29. The method according to any one of claims 20, 27 or 28, characterized in that The method further comprises: The second communication device receives fourth configuration information from the third communication device, wherein the fourth configuration information is used to instruct the second communication device to receive signals on the M second frequency bands.

30. The method according to claim 29, characterized in that The fourth configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the second communication device to receive signals on the M second frequency bands.

31. The method according to any one of claims 18 to 30, characterized in that The fourth signal received on the M second frequency bands includes an ith fourth signal and a jth fourth signal, the ith fourth signal is a signal received on the ith second frequency band, the jth fourth signal is a signal received on the jth second frequency band, i and j are different, and i and j are any integers from 1 to M, and the at least two second frequency bands include the ith second frequency band and the jth second frequency band; The second communication device determines, according to the third signal and the fourth signal, a system delay of each of at least two second frequency bands of the M second frequency bands and / or a phase difference between the at least two second frequency bands, including: The second communication device determines, according to the third signal, respective time delays of N scattering points, where N is a positive integer, and the respective time delays of the N scattering points are time delays required for a signal to be transmitted by the second communication device or a communication device other than the second communication device and propagate through the N scattering points to the second communication device respectively; The second communication device determines the phase difference and / or system delay between the i-th second frequency band and the j-th second frequency band based on the respective delays of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal, and the system delay includes a first system delay corresponding to the i-th second frequency band and a second system delay corresponding to the j-th second frequency band.

32. The method according to claim 31, characterized in that At least one of the phase difference and the system delay, the delays of the N scattering points, the phase of the i-th fourth signal, and the phase of the j-th fourth signal satisfy the following relationship: in, is the difference between the phase of the i-th fourth signal and the phase of the j-th fourth signal, f i is the center frequency of the i-th second frequency band, f j is the center frequency of the j-th second frequency band, τ l is the time delay of the lth scattering point among the N scattering points, l is any integer from 1 to N, τ i is the first system delay, τ j is the second system delay, Δφ ij is the phase difference.

33. The method according to claim 32, characterized in that The signal strength of the signal corresponding to the lth scattering point is greater than the intensity threshold, and the signal strength of the signals corresponding to other scattering points is less than or equal to the intensity threshold, and the other scattering points are scattering points other than the lth scattering point in the lth distance resolution unit where the lth scattering point is located.

34. The method according to any one of claims 31 to 33, characterized in that The phase difference is the difference between the phase offset generated when the second communication device and the first communication device process signals on the i-th second frequency band, and the phase offset generated when the second communication device and the first communication device process signals on the j-th second frequency band. The first system delay is the delay generated when the second communication device and the first communication device process signals on the i-th second frequency band. The second system delay is the delay generated when the second communication device and the first communication device process signals on the j-th second frequency band.

35. The method according to any one of claims 18 to 34, characterized in that The second communication device performs a perceptual process of coherently combining the at least two second frequency bands according to respective system delays of the at least two second frequency bands and / or a phase difference between the at least two second frequency bands, including: The second communication device coherently combines the i-th second frequency band with the j-th second frequency band according to the phase difference and / or the system delay to obtain the respective delays of the K scattering points, where K is an integer greater than N, and the respective delays of the K scattering points are the delays required for a signal to be transmitted by the second communication device or a communication device other than the second communication device and propagate to the second communication device after being acted upon by the K scattering points.

36. A communication method, characterized in that: Applicable to a third communication device, comprising: The third communication device receives capability information of the first communication device, wherein the capability information of the first communication device is used to indicate a frequency band supported by the first communication device, and the frequency band supported by the first communication device includes a first frequency band and M non-continuous second frequency bands, where M is an integer greater than or equal to 2; The third communication device sends first configuration information and second configuration information to the first communication device based on the capability information, wherein the first configuration information is used to instruct the first communication device to send a signal on the first frequency band, and the second configuration information is used to instruct the first communication device to send a signal on the M second frequency bands, and the signals on the first frequency band and the M second frequency bands are signals for perception.

37. The method according to claim 36, characterized in that The first configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the first communication device to send a signal on the first frequency band.

38. The method according to claim 36, characterized in that The second configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the first communication device to send signals on the M second frequency bands.

39. The method according to any one of claims 36 to 38, characterized in that The method further comprises: The third communication device receives capability information of the second communication device, wherein the capability information of the second communication device is used to indicate a frequency band supported by the second communication device, and the frequency band supported by the second communication device includes a first frequency band and M non-continuous second frequency bands; Correspondingly, the third communication device sends the first configuration information and the second configuration information to the first communication device according to the capability information, including: The third communication device sends the first configuration information and the second configuration information to the first communication device according to the capability information of the first communication device and the capability information of the second communication device.

40. A communication method, characterized in that: Applicable to a third communication device, comprising: The third communication device receives capability information of the second communication device, wherein the capability information of the second communication device is used to indicate a frequency band supported by the second communication device, and the frequency band supported by the second communication device includes a first frequency band and M non-continuous second frequency bands, where M is an integer greater than or equal to 2; The third communication device sends third configuration information and fourth configuration information to the second communication device based on the capability information, wherein the third configuration information is used to instruct the second communication device to receive signals on the first frequency band, and the fourth configuration information is used to instruct the second communication device to receive signals on the M second frequency bands, and the signals on the first frequency band and the M second frequency bands are signals for perception.

41. The method according to claim 40, characterized in that The third configuration information includes at least one of the following: a frequency point of the first frequency band, a bandwidth of the first frequency band, or a period for the second communication device to receive signals on the first frequency band.

42. The method according to claim 41, characterized in that The fourth configuration information includes at least one of the following: the frequency point of each second frequency band in the M second frequency bands, the bandwidth of each second frequency band in the M second frequency bands, or the period for the second communication device to receive signals on the M second frequency bands.

43. The method according to any one of claims 40 to 42, characterized in that The method further comprises: The third communication device receives capability information of the first communication device, wherein the capability information of the first communication device is used to indicate a frequency band supported by the first communication device, and the frequency band supported by the first communication device includes a first frequency band and M non-continuous second frequency bands; Correspondingly, the third communication device sends third configuration information and fourth configuration information to the second communication device according to the capability information, including: The third communication device sends the third configuration information and the fourth configuration information to the second communication device according to the capability information of the first communication device and the capability information of the second communication device.

44. A communication device, characterized in that: The apparatus comprises: a module for performing the method as claimed in any one of claims 1-43.

45. A communication device, characterized in that: The communication device comprises: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method according to any one of claims 1-43.

46. ​​A communication system, characterized in that: The communication system comprises a first communication device and a second communication device, wherein the first communication device is used to execute the method according to any one of claims 1 to 16, and the second communication device is used to execute the method according to any one of claims 17 to 35.

47. The system according to claim 45, characterized in that The communication system further comprises a third communication device, wherein the third communication device is configured to execute the method according to any one of claims 36 to 43.

48. A computer-readable storage medium, characterized in that The computer-readable storage medium comprises a computer program or instructions, and when the computer program or instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 43.

49. A computer program product, characterized in that The method comprises a computer program or instructions, which, when executed on a computer, causes the computer to execute the method according to any one of claims 1 to 43.

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