Communication method, apparatus, and system

Abstract

The present application provides a communication method, an apparatus, and a system. The method comprises: acquiring a sensing signal, the sensing signal being used for sensing a target object, the sensing signal being carried on a first resource, and a time domain resource of the first resource using an orthogonal frequency division multiplexing (OFDM) symbol, a time slot, a half-subframe, a subframe, a frame, or preset time as the granularity. In this case, the granularity of the time domain resource of the first resource is consistent with the granularity of time resources in existing technologies, so that the first resource can share a time resource division system with existing technologies, thereby aligning a start position and an end position of a sensing resource with those of a communication resource.

Description

A communication method, apparatus and system

[0001] This application, application number 202411999291.X, entitled "Invention", is to be filed with the China National Intellectual Property Administration by December 31, 2024.

[0002] Priority is claimed in the Chinese patent application for “a communication method, apparatus and system”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communications, and more specifically, to a communication method, apparatus, and system. Background Technology

[0004] With the evolution of communication technologies, communication systems can further incorporate sensing capabilities. Communication and sensing functions complement each other within a single system, achieving Integrated Sensing and Communication (ISAC). Both communication and sensing processes can utilize reference signals (RS) to probe the channel. However, in current technologies, the reference signals used for communication may not be reusable for sensing functions due to varying requirements. For example, a user equipment-specific RS may lack sufficient bandwidth to meet sensing resolution requirements, necessitating the development of dedicated sensing RSs.

[0005] Therefore, how to adapt a dedicated sensing RS to the current communication system is an urgent problem to be solved. Summary of the Invention

[0006] This application provides a communication method, apparatus, and system that makes the sensing system compatible with the communication system and reduces processing overhead.

[0007] Firstly, a communication method is provided, which can be executed by a first device. Unless otherwise specified, the "first device" in this application can refer to a first device (e.g., a sensing node or a transmitting node; or a network device or a terminal device, the functions of which can be implemented by the network device or the terminal device), a component of the first device, or a logic module or software that can implement all or part of the functions of the first device. For ease of description, the following description uses execution by the first device as an example.

[0008] The method includes: acquiring a sensing signal, the sensing signal being used to sense a target object, the sensing signal being carried on a first resource, the time domain resources of the first resource being in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times as granularity.

[0009] Optionally, the length of the time-domain resource of the first resource is an integer multiple of the length of an OFDM symbol, an integer multiple of the time slot length, an integer multiple of the half-subframe length, an integer multiple of the subframe length, an integer multiple of the frame length, or an integer multiple of a preset time length.

[0010] It should be noted that the length of the time domain resource of the first resource can also be referred to as the time length of the first resource, the size of the first resource, the time domain size of the first resource, etc., and the embodiments of this application do not limit its name.

[0011] It is understood that in existing communication systems, the granularity of time resources (e.g., the time-domain resources of the first resource) can include OFDM symbols, time slots, half-subframes, subframes, or frames, etc. (or, time resources can be granularized as OFDM symbols, time slots, half-subframes, subframes, or frames). For example, time resources can be based on OFDM symbols (or, the granularity of time resources is OFDM symbols), or time resources can be based on time slots (or, the granularity of time resources is time slots), or time resources can be based on subframes (e.g., with a length of 1ms) (or, the granularity of time resources is subframes). It is understood that the first resource in this application includes time-domain resources and the corresponding frequency-domain resources. In other words, the first resource can correspond to a continuous time range in the time domain and one or more continuous or discontinuous frequency ranges in the frequency domain. This application's embodiments only describe the time-domain resources corresponding to the first resource and do not limit the frequency-domain resources corresponding to the first resource.

[0012] For example, the first resource can be a subframe in the time domain (i.e., the time domain resource is a subframe), and in the frequency domain, it can be the available frequency band corresponding to that subframe (i.e., the corresponding frequency domain resource can be the available frequency band corresponding to that subframe). In one possible implementation, the first resource can be a time slot in the time domain, and in the frequency domain, it can be 12 consecutive subcarriers corresponding to that time slot; that is, the first resource can be a resource block (RB).

[0013] For example, the first resource can correspond to multiple consecutive OFDM symbols in the time domain (i.e., the length of the time domain resource of the first resource is the time length corresponding to the multiple consecutive OFDM symbols), and in the frequency domain it can be the available frequency band corresponding to the multiple consecutive OFDM symbols.

[0014] For example, the time domain resources of the first resource are granular in terms of OFDM symbols, time slots, half-subframes, subframes, frames, or preset times, and the frequency domain resources of the first resource can be frequency bands corresponding to the OFDM symbols, time slots, half-subframes, subframes, or frames; or they can be one or more preset frequency bands.

[0015] Based on the above scheme, the temporal resources of the first resource maintain the same granularity as the temporal resources in current technologies (e.g., Long Term Evolution (LTE) systems or 5th generation (5G) systems, also known as New Radio (NR) systems). This allows the first resource to share a temporal resource allocation system with current technologies, aligning the start and end positions of the sensing resource with the communication resource. In other words, it avoids unusable time intervals between sensing and communication resources, such as intervals of half an OFDM symbol (which cannot be used for communication transmission), thus preventing the waste of time resources and reducing the impact of sensing on the system. The preset time length is also used to align the temporal start and end positions of the first resource with the communication resource.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the sensing signal is carried on a first resource, including: the sensing signal is carried on one or more second resources, the first resource including the one or more second resources; wherein at least one of the one or more second resources includes M consecutive first time units, M is a positive integer, any two first time units in the M consecutive first time units carry the same signal, and the M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

[0017] It is understandable that transmitting a CP (Confirmation Point) typically consumes resources, leading to an increase in transmit power. Furthermore, the design of the CP length and subsequent configuration / indication processes increase system implementation complexity and signaling overhead. For example, the CP length may be related to the maximum unambiguous sensing distance. When the maximum unambiguous sensing distance requirement changes, the CP length needs to be adjusted, increasing system implementation complexity and involving signaling indication, which in turn increases signaling overhead. Therefore, based on the above scheme, allowing M consecutive first time units to not carry CPs can effectively reduce transmit power, achieving energy savings or equivalently increasing transmit signal power. Moreover, since the sensing signal does not carry communication information, allowing any two first time units among the M consecutive first time units to carry the same signal will not affect sensing performance, and carrying the same signal allows the signal carried by the previous time unit to be used as the equivalent CP of the signal carried by the current time unit. The length of the equivalent CP is adjustable, and the specific length is determined by the sensing receiving node (receiving the sensing signal). Theoretically, the maximum equivalent CP length is M / 2 first time units. Therefore, the above scheme can also eliminate the need for CP length design and configuration / instruction process, reducing the complexity of system implementation and signaling overhead.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, when the sensing signal is carried on multiple second resources, any two of the multiple second resources are of different sizes; or, any two of the multiple second resources are of the same size; or, some of the multiple second resources are of the same size; or, any two of the multiple second resources include different numbers of first time units; or, any two of the multiple second resources include the same number of first time units; or, some of the multiple second resources include the same number of first time units.

[0019] Based on the above scheme, sensing signals carried on different secondary resources can have different durations, increasing the flexibility of sensing resource allocation.

[0020] In conjunction with the first aspect, in certain implementations of the first aspect, the length of the temporal domain resource of the first resource is granular with time slots, including: the first resource includes A series of consecutive time slots; wherein, Greater than or equal to 2, The time slot length is determined based on the parameter set μ0, where μ0 is an integer.

[0021] In conjunction with the first aspect, in certain implementations of the first aspect, the length of the time-domain resource of the first resource is expressed in OFDM symbols, including: the first resource includes A series of consecutive OFDM symbols; wherein, Greater than or equal to 2, The length of the OFDM symbol is determined according to the parameter set μ0, where μ0 is an integer.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, μ0 is less than or equal to μ, where μ is a set of parameters corresponding to any of the first time units.

[0023] Based on the above scheme, μ0 being less than or equal to μ can improve the utilization rate of the first resource.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, when the length of the time-domain resource of the first resource is granular with a preset time, μ is greater than or equal to 2, where μ is a parameter set corresponding to any first time unit.

[0025] In one possible implementation, the preset time length is 0.25ms, 0.5ms, or 1ms.

[0026] In conjunction with the first aspect, in some implementations of the first aspect, the time length of each first time unit is...

[0027] In conjunction with the first aspect, in some implementations of the first aspect, the subcarrier spacing carried on each first time unit is 15×2. μ kHz without CP-OFDM symbol.

[0028] When performing Doppler estimation based on Fast Fourier Transform (FFT) processing, compared to the time sampling interval of one CP-OFDM length in CP-OFDM radar, the above scheme can perform time sampling with a smaller sampling interval, that is, the length of one time unit or the length of no CP-OFDM symbol, which can improve the performance of Doppler estimation.

[0029] In conjunction with the first aspect, in some implementations of the first aspect, the first resource further includes a third resource; the third resource is used for switching from communication to sensing; and / or, the third resource is used for switching from sensing to communication; and / or, the third resource is used for switching within sensing.

[0030] Based on the above scheme, when the third resource is used for handover from communication to sensing or from sensing to communication, the mutual interference between communication signals can be reduced. For example, sensing signals may return to the receiver due to multipath propagation; or, due to non-ideal isolation of the transmitting and receiving antennas, sensing signals may leak to the receiver. Without the third resource, reflected or leaked sensing signals may be received along with subsequent communication signals, thus degrading the demodulation performance of the communication signals. On the other hand, the third resource can also reduce the difficulty of handover implementation and lower the capability requirements of sensing nodes. When the third resource is used for handover within sensing, handover within sensing can include frequency hopping, subband switching, component carrier (CC) switching, antenna switching, antenna panel switching, antenna subarray switching, and antenna beam switching. Based on frequency hopping or channel splicing, multiple small bandwidths, multiple subbands, or multiple CCs can be aggregated into a large bandwidth to meet sensing performance requirements while reducing the complexity of implementing large bandwidth. By switching beams, antennas, antenna panels, and antenna subarrays, it is possible to sense targets from different directions / angles, which helps to improve the performance of angle and position estimation.

[0031] In conjunction with the first aspect, in some implementations of the first aspect, where the second resource is located after the third resource, the first resource further includes a fourth resource; the fourth resource is located between the first first time unit of the third resource and the second resource; the fourth resource is used to carry the CP of the sensing signal.

[0032] Based on the above scheme, the signal carried by the first time unit in each first resource has a CP (Concurrent Position). This enables the alignment of the transmitting window and the receiving window when processing the signal carried by the first time unit in the second resource on the sensing receiving side.

[0033] In one implementation, the size of the fourth resource is related to the sensing requirements. For example, the size of the fourth resource is related to the maximum unambiguous detection distance.

[0034] In conjunction with the first aspect, in some implementations of the first aspect, when the second resource and the first resource have the same time-domain start position, the last OFDM symbol preceding the second resource has a zero-tail or low-power tail signal.

[0035] Optionally, the CP of the signal carried by the first time unit in the second resource may be placed before the first resource, and its position may overlap in time with the zero-tail or low-power tail signal of the last OFDM symbol before the second resource.

[0036] Based on the above scheme, the CP can be located within the communication resource, allowing the last OFDM symbol before the first resource to have a zero-tail or low-power tail signal, thus reducing the impact of the CP on that last OFDM symbol. Furthermore, when processing the signal carried in the first time unit of the first resource on the sensing receiver side, the positions of the transmitting window and the receiving window can be aligned.

[0037] Optionally, the duration of the zero-tail or low-power tail signal of the last OFDM symbol preceding the second resource can be greater than or equal to the length of the CP.

[0038] In conjunction with the first aspect, in some implementations of the first aspect, the first resource is used solely for sensing.

[0039] In conjunction with the first aspect, in some implementations of the first aspect, before acquiring the sensing signal, the method further includes: acquiring first information, the first information including information about the first resource, the first information including information about the first resource, the information about the first resource including any one or more of the following: the time-domain start position of the first resource, the time-domain end position of the first resource, the frequency-domain start position of the first resource, the frequency-domain end position of the first resource, the duration of the first resource, or the frequency-domain bandwidth of the first resource.

[0040] In conjunction with the first aspect, in some implementations of the first aspect, the first information is determined based on one or more of the following: the time information required for switching, the maximum channel bandwidth supported by the first device under a given set of parameters, the beamwidth, or the information of the target object.

[0041] Optionally, the information of the first resource may also include the time-domain size and quantity of the second resource, the time-domain size and quantity of the third resource, and / or the time-domain size and quantity of the fourth resource.

[0042] Optionally, the frequency domain resource bandwidth corresponding to the second resource does not exceed the maximum channel bandwidth supported by the first device under a given parameter set.

[0043] Optionally, the size of the third resource does not exceed the time required for the switchover.

[0044] In conjunction with the first aspect, in some implementations of the first aspect, the first information further includes configuration information, which includes one or more of the following: the subcarrier spacing of the first time unit, the signal carried by the first time unit, the number of second resources, the time-domain start position of the second resource, the frequency-domain start position of the second resource, the number of third resources, the time-domain start position of the third resource, the frequency-domain start position of the third resource, the number of fourth resources, the time-domain start position of the fourth resource, the frequency-domain start position of the fourth resource, or the number of first time units included in each of the one or more second resources.

[0045] Based on the above scheme, information about the first resource and / or other resources within the first resource (e.g., the temporal size and quantity of different resources) can be determined according to the specific configuration of the first device (e.g., based on the capabilities of the first device). Furthermore, the first resource for sensing and its corresponding configuration can be determined based on information about the target object, making resource allocation and use more rational. For example, the size of the CP can be determined based on information about the target object (e.g., distance), thus determining the size of the fourth resource.

[0046] Secondly, a communication method is provided, which can be executed by a first entity. Unless otherwise specified, the "first entity" in this application can refer to a first entity (e.g., a network entity (e.g., a sensing management function (SMF) network element, etc.)), a component within the first entity, or a logical module or software capable of implementing all or part of the functions of the first entity. For ease of description, the following description uses the execution by the first entity as an example.

[0047] The method includes: sending first information, the first information including information about a first resource, the information about the first resource including any one or more of the following: the time-domain start position of the first resource, the time-domain end position of the first resource, the frequency-domain start position of the first resource, the frequency-domain end position of the first resource, the duration of the first resource, or the frequency-domain bandwidth of the first resource; wherein, the first resource is used to carry sensing signals, and the time-domain resources of the first resource are granular in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

[0048] In conjunction with the second aspect, in some implementations of the second aspect, the first information is determined based on any one or more of the following: the time information required for switching, the maximum channel bandwidth supported by the first device under a given parameter set, the beamwidth, or the information of the target object; wherein the sensing signal is used to sense the target object.

[0049] In conjunction with the second aspect, in some implementations of the second aspect, the first information further includes configuration information, which includes one or more of the following: the subcarrier spacing of the first time unit, the signal carried by the first time unit, the number of second resources, the time-domain start position of the second resource, the frequency-domain start position of the second resource, the number of third resources, the time-domain start position of the third resource, the frequency-domain start position of the third resource, the number of fourth resources, the time-domain start position of the fourth resource, the frequency-domain start position of the fourth resource, or the number of first time units included in each of the one or more second resources.

[0050] In conjunction with the second aspect, in some implementations of the second aspect, the sensing signal is carried on one or more second resources, the first resource including the one or more second resources; wherein, at least one of the one or more second resources includes M consecutive first time units, M is a positive integer, any two first time units in the M consecutive first time units carry the same signal, and the M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

[0051] In conjunction with the second aspect, in some implementations of the second aspect, when the sensing signal is carried on multiple second resources, any two of the multiple second resources are of different sizes; or, any two of the multiple second resources are of the same size; or, some of the multiple second resources are of the same size; or, any two of the multiple second resources include different numbers of first time units; or, any two of the multiple second resources include the same number of first time units; or, some of the multiple second resources include the same number of first time units.

[0052] In conjunction with the second aspect, in some implementations of the second aspect, the length of the temporal domain resource of the first resource is granular with time slots, including: the first resource includes A series of consecutive time slots; wherein, Greater than or equal to 2, The time slot length is determined based on the parameter set μ0, where μ0 is an integer.

[0053] In conjunction with the second aspect, in certain implementations of the second aspect, the length of the time-domain resource of the first resource is granular with OFDM symbols, including: the first resource includes A series of consecutive OFDM symbols; wherein, Greater than or equal to 2, The length of the OFDM symbol is determined according to the parameter set μ0, where μ0 is an integer.

[0054] In conjunction with the second aspect, in some implementations of the second aspect, μ0 is less than or equal to μ, where μ is a set of parameters corresponding to any of the first time units.

[0055] In conjunction with the second aspect, in some implementations of the second aspect, when the length of the time-domain resource of the first resource is a preset time as the granularity, μ is greater than or equal to 2, and μ is a parameter set corresponding to any first time unit.

[0056] In conjunction with the second aspect, in some implementations of the second aspect, the time length of each first time unit is...

[0057] In conjunction with the second aspect, in some implementations of the second aspect, the subcarrier spacing carried on each first time unit is 15×2. μ kHz without CP-OFDM symbol.

[0058] In conjunction with the second aspect, in some implementations of the second aspect, the first resource further includes a third resource; the third resource is used for switching from communication to sensing; and / or, the third resource is used for switching from sensing to communication; and / or, the third resource is used for switching within sensing.

[0059] In conjunction with the second aspect, in some implementations of the second aspect, where the second resource is located after the third resource, the first resource further includes a fourth resource; the fourth resource is located between the first time unit of the third resource and the second resource; the fourth resource is used to carry the CP of the sensing signal.

[0060] In conjunction with the second aspect, in some implementations of the second aspect, when the second resource and the first resource have the same time-domain start position, the last OFDM symbol preceding the second resource has a zero-tail or low-power tail signal.

[0061] In conjunction with the second aspect, in some implementations of the second aspect, the first resource is used only for perception.

[0062] In conjunction with the second aspect, in some implementations of the second aspect, the first information is determined based on one or more of the following:

[0063] The switching requires time information, the maximum channel bandwidth supported by the first device under a given parameter set, beamwidth, or information about the target object; wherein, the sensing signal is used to sense the target object.

[0064] It should be noted that the beneficial effects of the second aspect and its corresponding implementation can be referred to the relevant descriptions of the first aspect and its corresponding implementation, which will not be repeated here.

[0065] Thirdly, a communication method is provided, which can be executed by a first device. Unless otherwise specified, the "first device" in this application can refer to a first device (e.g., a sensing node or a transmitting node; or a network device or a terminal device, the functions of which can be implemented by the network device or the terminal device), a component of the first device, or a logic module or software that can implement all or part of the functions of the first device. For ease of description, the following description uses execution by the first device as an example.

[0066] The method includes: acquiring a sensing signal, the sensing signal being used to sense a target object, the sensing signal being carried on one or more second resources, at least one of the one or more second resources including M consecutive first time units, M being a positive integer, in the M consecutive first time units, any two first time units carrying the same signal, and the M consecutive first time units not carrying the cyclic prefix CP of the sensing signal.

[0067] In conjunction with the third aspect, in some implementations of the third aspect, the first resource includes one or more of the second resources, wherein the time-domain resources of the first resource are in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

[0068] In conjunction with the third aspect, in some implementations of the third aspect, when the sensing signal is carried on multiple second resources, any two of the multiple second resources are of different sizes; or, any two of the multiple second resources are of the same size; or, some of the multiple second resources are of the same size; or, any two of the multiple second resources include different numbers of first time units; or, any two of the multiple second resources include the same number of first time units; or, some of the multiple second resources include the same number of first time units.

[0069] In conjunction with the third aspect, in certain implementations of the third aspect, the length of the temporal domain resource of the first resource is granular with time slots, including: the first resource includes A series of consecutive time slots; wherein, Greater than or equal to 2, The time slot length is determined based on the parameter set μ0, where μ0 is an integer.

[0070] In conjunction with the third aspect, in certain implementations of the third aspect, the length of the temporal domain resource of the first resource is granular at OFDM symbols, including: the first resource includes A series of consecutive OFDM symbols; wherein, Greater than or equal to 2, The length of the OFDM symbol is determined according to the parameter set μ0, where μ0 is an integer.

[0071] In conjunction with the third aspect, in some implementations of the third aspect, μ0 is less than or equal to μ, where μ is a set of parameters corresponding to any of the first time units.

[0072] In conjunction with the third aspect, in some implementations of the third aspect, when the length of the time-domain resource of the first resource is granular with a preset time, μ is greater than or equal to 2, where μ is a parameter set corresponding to any first time unit.

[0073] In conjunction with the third aspect, in some implementations of the third aspect, the time length of each first time unit is...

[0074] In conjunction with the third aspect, in some implementations of the third aspect, the subcarrier spacing carried on each first time unit is 15×2. μ kHz without CP-OFDM symbol.

[0075] In conjunction with the third aspect, in some implementations of the third aspect, the first resource further includes a third resource; the third resource is used for switching from communication to sensing; and / or, the third resource is used for switching from sensing to communication; and / or, the third resource is used for switching within sensing.

[0076] In conjunction with the third aspect, in some implementations of the third aspect, where the second resource is located after the third resource, the first resource further includes a fourth resource; the fourth resource is located between the first time unit of the third resource and the second resource; the fourth resource is used to carry the CP of the sensing signal.

[0077] In conjunction with the third aspect, in some implementations of the third aspect, when the second resource and the first resource have the same time-domain start position, the last OFDM symbol preceding the second resource has a zero-tail or low-power tail signal.

[0078] In conjunction with the third aspect, in some implementations of the third aspect, the first resource is used only for perception.

[0079] In conjunction with the third aspect, in some implementations of the third aspect, before acquiring the sensing signal, the method further includes: acquiring first information, the first information including information about the first resource, the first information including information about the first resource, the information about the first resource including any one or more of the following: the time domain start position of the first resource, the time domain end position of the first resource, the frequency domain start position of the first resource, the frequency domain end position of the first resource, the duration of the first resource, or the frequency domain bandwidth of the first resource.

[0080] In conjunction with the third aspect, in some implementations of the third aspect, the first information is determined based on one or more of the following: the time information required for switching, the maximum channel bandwidth supported by the first device under a given set of parameters, the beamwidth, or the information of the target object.

[0081] In conjunction with the third aspect, in some implementations of the third aspect, the first information further includes configuration information, which includes one or more of the following: the subcarrier spacing of the first time unit, the signal carried by the first time unit, the number of second resources, the time-domain start position of the second resource, the frequency-domain start position of the second resource, the number of third resources, the time-domain start position of the third resource, the frequency-domain start position of the third resource, the number of fourth resources, the time-domain start position of the fourth resource, the frequency-domain start position of the fourth resource, or the number of first time units included in each of the one or more second resources.

[0082] It should be noted that the beneficial effects of the third aspect and its corresponding implementation can be referred to the relevant descriptions of the first aspect and its corresponding implementation, which will not be repeated here.

[0083] Fourthly, a communication device is provided, which has the functions of implementing the first or second aspect described above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the first or second aspect. These modules, units, or means can be implemented in software, hardware, or a combination of software and hardware. Examples include processing units and transceiver units.

[0084] In one implementation, the transceiver unit can be a transceiver or an input / output interface; the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0085] In another implementation, the transceiver unit can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit can be at least one processor, processing circuit, or logic circuit.

[0086] For example, if the communication device is a component (e.g., a chip or circuit) of the first node described above, then the communication device includes:

[0087] The processing unit is used to acquire sensing signals, which are used to sense target objects. The sensing signals are carried on a first resource, and the time-domain resources of the first resource are in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

[0088] The transmitting unit is used to transmit sensing signals.

[0089] For example, if the communication device is a component (e.g., a chip or circuit) of the first entity described above, then the communication device includes:

[0090] The transceiver unit is used to transmit first information, the first information including information about a first resource, the information about the first resource including any one or more of the following: the time-domain start position of the first resource, the frequency-domain start position of the first resource, the duration of the first resource, or the frequency-domain bandwidth of the first resource; wherein, the first resource is used to carry sensing signals, and the time-domain resources of the first resource are granular in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

[0091] The processing unit is used to determine the first information.

[0092] Fifthly, a communication device is provided, which has the functions of implementing the third or second aspect described above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the third or second aspect. These modules, units, or means can be implemented in software, hardware, or a combination of software and hardware. Examples include processing units and transceiver units.

[0093] In one implementation, the transceiver unit can be a transceiver or an input / output interface; the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0094] In another implementation, the transceiver unit can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit can be at least one processor, processing circuit, or logic circuit.

[0095] For example, if the communication device is a component (e.g., a chip or circuit) of the first node described above, then the communication device includes:

[0096] A processing unit is used to acquire a sensing signal, which is used to sense a target object. The sensing signal is carried on one or more second resources. One of the one or more second resources includes M consecutive first time units, where M is a positive integer. In the M consecutive first time units, any two first time units carry the same signal. The M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

[0097] The transmitting unit is used to transmit sensing signals.

[0098] For example, if the communication device is a component (e.g., a chip or circuit) of the first entity described above, then the communication device includes:

[0099] The transceiver unit is used to transmit first information, the first information including information about a first resource, the information about the first resource including any one or more of the following: the time-domain start position of the first resource, the frequency-domain start position of the first resource, the duration of the first resource, or the frequency-domain bandwidth of the first resource; wherein, the first resource is used to carry sensing signals, and the time-domain resources of the first resource are granular in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

[0100] The processing unit is used to determine the first information.

[0101] A sixth aspect provides a communication device including a processor coupled to a memory for storing a computer program, the processor for running the computer program such that the communication device performs a method as described in any possible implementation of the first or second aspect above; or, causes the communication device to perform a method as described in any possible implementation of the third aspect above.

[0102] In a seventh aspect, a computer-readable storage medium is provided that stores program code for execution by a device, the program code causing the method provided by any implementation of the first or second aspect to be executed; or, the program code causing the method provided by any implementation of the third aspect to be executed.

[0103] Eighthly, a chip is provided, the chip including a processor and a communication interface, the processor reading instructions stored in a memory through the communication interface, causing the method provided by any implementation of the first or second aspect to be executed; or causing the method provided by any implementation of the third aspect to be executed.

[0104] Optionally, as one implementation, the chip further includes a memory storing computer programs or instructions, and a processor executes the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the method provided by any of the implementations of the first or second aspect is executed; or, the method provided by any of the implementations of the third aspect is executed.

[0105] A ninth aspect provides a communication system comprising a first means for performing the method provided in the first aspect, and / or a first entity for performing the method provided in the second aspect; or, comprising a first means for performing the method provided in the third aspect, and / or a first entity for performing the method provided in the second aspect.

[0106] In a tenth aspect, a computer program product comprising instructions is provided, which, when run on a computer, causes the method provided by any implementation of the first or second aspect to be executed; or causes the method provided by any implementation of the third aspect to be executed. Attached Figure Description

[0107] Figure 1 is a schematic diagram of an NR OFDM system.

[0108] Figure 2 is a schematic diagram of a time resource allocation method.

[0109] Figure 3 is a schematic diagram of a network architecture 300 applicable to an embodiment of this application.

[0110] Figure 4 is a schematic diagram of a wireless system 400 applicable to an embodiment of this application.

[0111] Figure 5 is a schematic diagram of a communication method 500 applicable to an embodiment of this application.

[0112] Figure 6 is a schematic diagram of a first resource applicable to an embodiment of this application.

[0113] Figure 7 is a schematic diagram of a special resource applicable to an embodiment of this application.

[0114] Figure 8 is a schematic diagram of the time interval applicable to embodiments of this application.

[0115] Figure 9 is a schematic diagram of a send and receive window.

[0116] Figure 10 is a schematic diagram of a dedicated resource CP placement location applicable to an embodiment of this application.

[0117] Figure 11 is a schematic diagram of a dedicated resource CP placement location applicable to an embodiment of this application.

[0118] Figure 12 is a schematic diagram of a communication method 1200 applicable to an embodiment of this application.

[0119] Figure 13 is a schematic diagram of the structure of a communication device 1300 provided in an embodiment of this application.

[0120] Figure 14 is a schematic diagram of the structure of a communication device 1400 provided in an embodiment of this application.

[0121] Figure 15 is a schematic diagram of the structure of a chip system 1500 provided in an embodiment of this application. Detailed Implementation

[0122] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0123] The technical solutions provided in this application can be applied to any communication standard, any device, system, or network that transmits and receives radio frequency signals. For example, the Institute of Electrical and Electronics Engineers (IEEE) 802.15.4 standard for ultra-wideband (UWB), the IEEE 802.11 standard (including those identified as Wi-Fi technology), the Bluetooth standard, code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), Long Term Evolution (LTE), 5th generation (5G) (or new radio (NR)) systems, beyond 5G (B5G) mobile communication systems, the Internet of Things (IoT), and non-terrestrial networks (NTN). The technical solutions provided in this application can also be applied to future communication networks. The technical solutions provided in this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and Internet of Things (IoT) communication systems or other communication systems.

[0124] To facilitate understanding of the embodiments of this application, the terms involved in this application will be briefly explained first.

[0125] It should be understood that the basic concepts introduced below are illustrated using the basic concepts specified in the NR protocol as examples, but do not limit the embodiments of this application to be applied only to NR systems. Therefore, the standard names that appear when describing NR systems are functional descriptions, and the specific names are not limited, but only indicate the functions of the device, and can be extended to other future systems accordingly.

[0126] 1. Communication services and sensing services

[0127] Electromagnetic waves possess both communication and sensing capabilities (or detection / sensing). Communication systems, such as NR or LTE systems, can utilize the communication capabilities of electromagnetic waves to facilitate the transmission of information between devices (e.g., between network devices and terminal devices, between terminal devices, and between network devices), thus providing communication services. Similarly, communication systems can utilize the sensing capabilities of electromagnetic waves to perform functions such as positioning, motion detection, and imaging, thus providing sensing services (or, communication systems possess sensing capabilities). For a long time, communication and sensing services have been technologies that have developed independently and in parallel. However, as wireless communication technology evolves towards higher operating frequencies, such as millimeter waves and terahertz, wider system bandwidths, such as hundreds of megahertz (MHz) and tens of gigahertz (GHz), and larger antenna apertures, these characteristics provide the technological foundation for integrating communication and sensing services into communication systems. Therefore, in future communication networks, technologies that integrate wireless communication and sensing services, or integrated communication and sensing technologies, will be one of the key enabling technologies.

[0128] 2. Reference signal (RS) and reference signal resource (RS resource)

[0129] A reference signal, also known as a pilot signal or reference sequence, can be used to perform functions such as channel measurement, channel estimation, or beam quality monitoring. The reference signal can be a known signal pre-agreed (or configured) between the transmitter and receiver. The reference signal (RS) may change during transmission, resulting in a changed RS'.

[0130] For a signal receiver (RS) used in communication, the RS can be transmitted along with the data-carrying signal in the transmission channel. After receiving the signal (RS'), the receiving end compares the differences between RS and RS' to understand the changes in the data-carrying signal in the transmission channel, performs channel characteristic estimation, and obtains the channel characteristic H. Based on the channel characteristic H, the received signal can be restored to the correct signal.

[0131] For a sensing RS (SeRS) used for sensing (or, as may be called, a sensing signal, radar sensing signal, or radar reference signal), the RS refers to a signal used to sense or detect a target, or in other words, a signal used to sense or detect environmental information. For example, a sensing RS is an electromagnetic wave transmitted by a network device to sense environmental information. This application does not limit the name of the sensing reference signal.

[0132] Reference signal resources are resources used to carry reference signals. They can be used to configure the transmission attributes of the reference signals, such as time-frequency resource location, port mapping relationships, power factors, and scrambling codes. Transmitting devices can transmit reference signals based on reference signal resources, and receiving devices can receive reference signals based on reference signal resources.

[0133] 3. Radio frequency sensing (RF sensing)

[0134] Radio frequency (RF) sensing is a technology that uses radio signals to detect and analyze objects or phenomena in the environment. RF sensing systems can identify relevant information about objects (e.g., presence, location, motion, and / or material properties) by transmitting radio frequency signals and analyzing changes in these signals after they interact with objects (e.g., reflection and / or attenuation).

[0135] In one possible application, radio frequency sensing can be used for personnel identification and / or monitoring. For example, it can acquire information such as an individual's location, speed of movement, and vital signs (e.g., heart rate and / or respiratory rate). In one possible implementation, identification and monitoring functions can be achieved using existing communication signals and infrastructure (e.g., a regular WiFi router) without requiring the user to wear or carry any devices.

[0136] In one possible application, radio frequency sensing can be used in autonomous driving to achieve functions such as intelligent cruise control and collision avoidance. Examples include position detection / tracking, direction finding, and distance estimation.

[0137] It should be noted that radio frequency sensing can include mono-static sensing and multi-static sensing. Mono-static sensing can also be called active sensing, and multi-static sensing can also be called passive sensing. The following will provide a detailed description with reference to Figure 3; the embodiments of this application will not be repeated here.

[0138] 4. Orthogonal Frequency Division Multiplexing (OFDM)

[0139] Figure 1 is a schematic diagram of an NR OFDM system.

[0140] In this system, optional modules (or steps) are represented by dashed lines. Figure 1 is merely exemplary and does not constitute a limitation on the embodiments of this application. The embodiments of this application can be applied to the system shown in Figure 1, to systems with more or fewer modules than the system shown in Figure 1, and to other systems.

[0141] Unless otherwise specified, embodiments of this application may use uppercase letters to represent frequency domain sequences (or signals) and lowercase letters to represent time domain sequences (or signals).

[0142] Referring to Figure 1, in some examples, the data sequence may include M consecutive frequency domain data S(kM), S(kM+1), ..., S(kM+M-1).

[0143] The serial-to-parallel (S / P) conversion module in the transmitting end can convert the data in the above M frequency domains into M-dimensional data blocks S. k =[S(kM),S(kM+1),…,S(kM+M-1)] T In this context, the subscript k represents the sequence number of the OFDM signal (or OFDM symbol); the superscript T represents the transpose. The aforementioned M-dimensional data block S... k It can be understood as a frequency domain sequence.

[0144] Through subcarrier mapping, S k The M data carried can be modulated onto N subcarriers. sc On each subcarrier, an N-dimensional data vector X is obtained. k Among them, N sc =M, where N is a positive integer greater than or equal to M. Of the N subcarriers, N excluding the N subcarriers... sc Other than subcarriers (NN) sc The N subcarriers can be understood as being modulated by data 0. The N-dimensional data vector X k It can be understood as a frequency domain sequence.

[0145] N-dimensional data vector X k A set of sampling points can be obtained through the N-point inverse discrete Fourier transform (IDFT). This set of sampling points can include N complex time-domain sampling points x. k =[x k (0),x k (1),…,x k (N-1)] T .

[0146] The above sampling points can be converted into serial data using a parallel-to-serial (P / S) conversion module. Then, after processing by modules or devices such as a cyclic prefix (CP) module, a digital-to-analog converter (DAC), a radio frequency (RF) module, and an antenna, the OFDM signal is transmitted.

[0147] The specific implementation of adding CP is copying x. k The last G samples are appended to x. k At the beginning, we obtain the time-domain OFDM symbol. Therefore, an OFDM symbol contains valid data x k And CP.

[0148] It should be noted that CP can eliminate inter-symbol interference (ISI) caused by multipath propagation. In addition, CP can convert the linear convolution of the multipath channel with the effective data portion of the OFDM symbol into a circular convolution, thereby reducing the complexity of data demodulation.

[0149] Correspondingly, the receiving end can obtain the data carried in the signal by using modules and operations such as the RF module, analog-to-digital converter (ADC), CP removal module, S / P module, N-point DFT, subcarrier demapping, and P / S module based on the received OFDM signal.

[0150] Specifically, the receiver demodulates the OFDM symbol through inverse processing. Assuming time and frequency synchronization are available and the CP length is sufficient, the CP removal operation (i.e., removing the first G samples from the received signal) yields a data block with N samples completely free of ISI, which is also equal to x. kCircular convolution with the channel impulse response. The time-domain circular convolution can be converted into frequency-domain dot product using the DFT, and then channel equalization can be performed with low complexity using frequency-domain single-tap equalization.

[0151] It should be understood that S k This may include modulation symbols and / or redundant signal sampling points. Modulation symbols can be obtained by modulating the (coded) bit stream. Modulation schemes may include pulse amplitude modulation (PAM), phase shift keying (PSK), quadrature amplitude modulation (QAM), amplitude phase shift keying (APSK), etc.

[0152] Redundant signal sampling points can include phase tracking reference signal (PTRS) sampling points, demodulation reference signals, tone-preserving signals, etc.

[0153] In some possible implementations, IDFT can be replaced by inverse fast Fourier transform (IFFT). In some possible implementations, DFT can be replaced by fast Fourier transform (FFT). In the embodiments of this application, IDFT and IFFT can be interchanged, and DFT and FFT can be interchanged, which will not be elaborated further.

[0154] Referring to Figure 1, in some other examples, the data sequence may include M consecutive time-domain data s(kM), s(kM+1), ..., s(kM+M-1), that is, the above M-dimensional data block s k This can be understood as a time-domain sequence. Correspondingly, the S / P module in the transmitting end can convert the above M time-domain data into M-dimensional data blocks s. k =[s(kM),s(kM+1),…,s(kM+M-1)] T .

[0155] It should be noted that N sc This can be understood as the number of subcarriers within the transmission bandwidth. In the above text, N... sc =M. It should be understood that N sc It can also be greater than M, that is, satisfying N. sc ≥M. For example, in frequency domain spectrum shaping with bandwidth extension, the length of S is M. k Perform sequence expansion, assuming the length of the expanded sequence is equal to N.sc .

[0156] Optionally, before subcarrier mapping, the data blocks s to be transmitted in the time domain k The frequency domain sequence S can be obtained through DFT processing. k For example, the DFT module can perform operations on s k Perform an M-point DFT operation to obtain the frequency domain sequence S. k .

[0157] Then, S k It can be processed by modules or devices such as subcarrier mapping, IDFT, P / S module, CP module, DAC, RF module, and antenna to realize the transmission of DFT spread spectrum OFDM (DFT-s-OFDM) signals.

[0158] It should be understood that DFT processing gives DFT-s-OFDM signals the characteristics of a single carrier, resulting in a significantly lower peak-to-average power ratio (PAPR) than multi-carrier signals such as OFDM. Therefore, with the same power amplifier, DFT-s-OFDM can provide greater output power and higher power amplifier efficiency, thereby improving coverage and reducing power consumption. The coverage and power consumption advantages of DFT-s-OFDM are particularly evident on the terminal device side; therefore, in current versions of LTE and NR, DFT-s-OFDM is used for uplink transmission.

[0159] It should be understood that s k This can include modulation symbols and / or redundant signal sampling points. Modulation symbols can be obtained by modulating the (coded) bitstream. Modulation schemes can include PAM, PSK, QAM, offset quadrature amplitude modulation (OQAM), APSK, etc.

[0160] Redundant signal sampling points can include PTRS sampling points, unique words, zeros, etc.

[0161] When the receiver processes the received DFT-s-OFDM signal, it also adds IDFT processing accordingly. For example, the location of IDFT can be seen in Figure 1, and will not be described again.

[0162] By performing a DFT operation at the transmitter, the DFT-s-OFDM signal acquires single-carrier characteristics. DFT-s-OFDM can achieve a significantly lower PAPR (Power Amplifier Ratio) than multi-carrier signals such as OFDM. Therefore, with the same power amplifier, a DFT-s-OFDM-based signal design may provide greater output power and higher power amplifier efficiency, thereby improving coverage and reducing energy consumption.

[0163] It should be noted that if s k For waveforms including UW and zero-tail (ZT), the CP operation may not be required. That is, the embodiments of this application are applicable not only to CP DFT-s-OFDM waveforms, but also to waveforms such as ZT-DFT-s-OFDM and UW-DFT-s-OFDM.

[0164] 5. Time resource allocation system

[0165] Figure 2 is a schematic diagram of a time resource allocation method.

[0166] For ease of understanding, Figure 2 uses an NR system as an example and does not constitute a limitation on the embodiments of this application. Both uplink and downlink transmissions are performed in the form of radio frames, each lasting 10 ms. Each radio frame may include 10 subframes, each lasting 1 ms. Each subframe can be divided into different slots, and each slot includes a certain number of OFDM symbols (CP-OFDM). The subcarrier spacing (SCS) of the CP-OFDM symbols is 15×2. μ kHz, where μ represents the parameter set (numerology).

[0167] It should be noted that CP-OFDM symbols can include normal CPs or extended CPs, with extended CPs lasting longer than normal CPs. When a CP-OFDM symbol has a normal CP, one time slot includes 14 CP-OFDM symbols; while when a CP-OFDM symbol has an extended CP, one time slot contains 12 CP-OFDM symbols. In NR systems, extended CP configurations exist when the subcarrier spacing is 60 kHz.

[0168] In the NR system, a subframe contains 2 time slots. μ For example, when μ = 0, the corresponding SCS is 15kHz (15 × 2). 0A subframe contains one time slot. If the CP-OFDM symbols include normal CP, then this time slot contains 14 CP-OFDM symbols. That is, a subframe contains 14 CP-OFDM symbols, and the index of these symbols within the subframe is denoted as l, where l ∈ {0, 1, 2, ..., 13}. For example, when μ = 1, the corresponding SCS is 30 kHz (15 × 2...). 1 A subframe contains two time slots. When the CP-OFDM symbols include normal CP, the time slot contains 14 CP-OFDM symbols. That is, a subframe contains 28 CP-OFDM symbols. The index of these symbols in the subframe is denoted as l, where l∈{0,1,2,…,27}.

[0169] Furthermore, a CP-OFDM symbol includes: valid data and CP. Correspondingly, the length of a CP-OFDM symbol (i.e., the time length) includes the length of the valid data and the length of the CP. The valid data portion of a CP-OFDM symbol (i.e., x in the above text) k The length of the effective data portion is equal to the reciprocal of the SCS. For example, when μ = 0, the SCS is 15 kHz, and the length of the effective data portion is approximately 66.67 μs.

[0170] It should also be noted that for a CP-OFDM symbol with parameter set μ and index l within a subframe, its effective data and CP sampling points (sampling interval is...) The number of Tc (also known as NR time units) satisfies the following formula:

[0171] in, This indicates the number of sampling points for valid data. The number of sampling points for CP is represented by the constant κ = 64.

[0172] Therefore, the time length of this CP-OFDM symbol satisfies:

[0173] Among them, T OFDM Indicates the time length of the CP-OFDM symbol.

[0174] As can be seen from the above, when the CP-OFDM symbol includes the normal CP, The value is related to the index l within the subframe.

[0175] Specifically, when l = 0 or l = 7 × 2 μAt this time, the CP length is increased by an additional 16κ. That is, there are two symbols with longer CPs within a subframe; or, there are two longer CP-OFDM symbols within a subframe. Understandably, the purpose of this is to align the time slots of different parameter sets every half subframe (i.e., 0.5ms).

[0176] Figure 3 is a schematic diagram of a network architecture 300 applicable to an embodiment of this application.

[0177] The network architecture shown in Figure 3(a) is applicable to a single-site sensing scenario. A single-site sensing scenario includes at least one sensing device / node (e.g., network device 310) and at least one sensed target (e.g., sensed target 320). In a single-site sensing scenario, the transmitter and receiver are located on the same sensing device / node (i.e., network device 310). The network device 310 can transmit sensing signals and detect the sensed target 320 by receiving sensing echo signals or reflected signals generated after the sensing signals encounter the sensed target; or, it can detect various attributes of the sensed target 320 (e.g., time of arrival, angle of arrival, phase shift, etc.) to determine the characteristics of the sensed target 320 (e.g., size, shape, speed, motion state, etc.).

[0178] It should be understood that the perceived target can refer to various tangible objects on the ground that can be sensed, such as mountains, forests, or buildings, and can also include movable objects such as vehicles, drones, pedestrians, and terminal devices. The perceived target is a target that can be sensed by a network device with sensing capabilities, and this target can feed back electromagnetic waves to the network device. The perceived target can also be called a detected target, a sensed object, a sensed device, etc., and this application embodiment does not limit this terminology.

[0179] The network architecture shown in Figure 3(b) is suitable for multi-station sensing scenarios. A multi-station sensing scenario includes at least two sensing devices / nodes (e.g., network device 310 and network device 311) and at least one sensed target (e.g., sensed target 320). In a multi-station sensing scenario, the transmitter and receiver are not located on the same sensing device / node (i.e., the transmitter can be located on network device 310, and the receiver can be located on network device 311). One sensing device / node can transmit a sensing signal to enable other sensing devices to sense the target object. Figure 3(b) uses bi-static sensing as an example. Network device 310 can transmit a sensing signal, and network device 311 can detect the sensed target 320 by receiving the sensing echo signal or reflected signal generated when the sensing signal encounters the sensed target; or, it can detect various attributes of the sensed target 320 (e.g., time of arrival, angle of arrival, phase shift, etc.) to determine the characteristics of the sensed target 320 (e.g., size, shape, speed, motion state, etc.).

[0180] It should be understood that, due to the multipath propagation characteristics of the channel, the sensed signal may reach the network device 311 via a line of sight (LOS) path; or, the sensed signal may reach the network device 311 via a non-LOS path, such as after being reflected by the sensed target 320.

[0181] It should be understood that Figure 3 is only an example, and the network architecture applicable to the embodiments of this application may also include more sensing devices, and each sensing device may also perform sensing communication with at least one sensing target.

[0182] In addition, network device 310 and / or network device 311 can also communicate based on the results of perception. The communication method provided in this application embodiment can also involve network elements or devices not shown in FIG3. For example, FIG3 can also include a terminal device, and network device 310 and / or network device 311 can also communicate with the terminal device based on the results of perception.

[0183] In addition, when the network device 310 sends the sensing signal, it can use a time-division multiplexing method with the communication signal, that is, the network device only sends the sensing signal; or it can use other multiplexing methods such as frequency division or space division with the communication signal to perform sensing and communication at the same time. This application embodiment does not limit this.

[0184] It should be noted that this application uses the sensing device / node as a network device as an example for illustration, which does not constitute a limitation on the type of sensing device / node. The sensing device / node can also be a transmitting and receiving point or a terminal device, and the embodiments of this application do not limit this.

[0185] The terminal device in this application embodiment is a user-side device with wireless transceiver capabilities. It can be a fixed device, a mobile device, a handheld device (e.g., a mobile phone), a wearable device, an in-vehicle device, or a wireless device (e.g., a communication module, modem, or chip system, etc.) built into the above devices. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, such as: cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine / machine-type communications (M2M / MTC) communication, Internet of Things, virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, and other scenarios. For example, a terminal device can be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in intelligent transportation and smart cities, or a communication device on a drone, etc. Terminal devices are sometimes referred to as user equipment (UE), user terminal, user device, user unit, user station, terminal, access terminal, access station, UE station, remote station, mobile device, or wireless communication device, etc. In the embodiments of this application, the device used to implement the functions of the terminal device can be the terminal device itself, or it can be a device capable of supporting the terminal device in implementing that function, such as a chip system or a combination of devices or components capable of implementing the functions of the terminal device. This device can be installed in the terminal device.

[0186] The network device in this application embodiment can be any communication device with wireless transceiver capabilities used for communicating with terminal devices. The network device can be a device in a radio access network (RAN) that provides wireless communication capabilities to terminal devices, referred to as RAN equipment. For example, the network device can be a base station, an evolved NodeB (eNodeB), a next-generation NodeB (gNB) in a 5G mobile communication system, a 3GPP subsequent evolution base station, a transmission reception point (TRP), an access point (AP) in a WiFi system, a wireless relay node, a wireless backhaul node, or a terminal device implementing base station functionality in D2D, etc. In communication systems employing different radio access technologies (RATs), the name of the device with base station functionality may differ. For example, in an LTE system, it may be called an eNB or eNodeB, and in a 5G or NR system, it may be called a gNB. This application does not limit the specific name of the base station. The network device can include one or more co-located or non-co-located transmission and reception points. For example, a network device may include one or more central units (CUs), one or more distributed units (DUs), or one or more CUs and one or more DUs. Exemplarily, the functionality of a CU can be implemented by a single entity or different entities. For instance, the functionality of a CU can be further divided, separating the control plane and user plane and implementing them through different entities, namely a control plane CU entity (i.e., CU-CP entity) and a user plane CU entity (i.e., CU-UP entity). The CU-CP and CU-UP entities can be coupled with DUs to jointly complete the functions of the access network device. In this way, some functions of a radio access network device can be implemented through multiple network function entities. These network function entities can be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform). As another example, in vehicle-to-everything (V2X) technology, the access network device can be a roadside unit (RSU). Multiple access network devices in a communication system can be base stations of the same type or different types. Base stations can communicate with terminal devices directly or through relay stations.In this application embodiment, the device for implementing the network device function can be the network device itself, or a device capable of supporting the network device in implementing the function, such as a chip system or a combination device or component capable of implementing the access network device function. This device can be installed in the network device. In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. In this application embodiment, the chip system can be composed of chips or include chips and other discrete devices. In this application embodiment, a network device is used as an example to describe the technical solution.

[0187] It should also be noted that the network device in this application embodiment is a device with sensing function, which can send sensing signals and receive and process the echo signals of the sensed target.

[0188] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0189] Furthermore, various aspects or features of this application can be implemented as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). Additionally, the various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable storage medium" can include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0190] Figure 4 is a schematic diagram of a wireless system 400 applicable to an embodiment of this application.

[0191] As shown in Figure 4, the wireless system 400 can realize communication, sensing, and / or positioning functions. The wireless system 400 may include the following components: terminal device 401; base station 402; satellite (also known as spacecraft) 403; access point (AP) 404; wireless device 405 (such as portable Wi-Fi 405-1, smartwatch (or wristband) 405-2, vehicle 405-3, mobile phone 405-5, laptop computer 405-5, static communication / positioning device); network 406; network function server 407; and external client 408.

[0192] Network 406 may include any of a variety of wireless and / or wired networks. For example, it may include any combination of public and / or private networks, local area networks (LANs) and / or wide area networks (WANs). Furthermore, the network may utilize one or more wired and / or wireless communication technologies. In some implementations, the network may, for example, include cellular or other mobile networks, wireless local area networks (WLANs), wireless wide-area networks (WWANs), and / or the Internet. It may also include Long-Term Evolution (LTE) wireless networks, 5th Generation (5G) wireless networks (also known as NR wireless networks or 5G NR wireless networks), Wi-Fi WLANs, and the Internet.

[0193] Network function server 407 may include one or more servers and / or other computing devices configured to provide network management and / or network auxiliary functions. For example, a location server may determine the location estimate of a terminal device and / or provide data (e.g., “auxiliary data”) to the terminal device to facilitate location measurement and / or location determination. In some implementations, the location server may also include an Enhanced Serving Mobile Location Center (E-SMLC) that uses a control plane (CP) location solution for LTE radio access of the terminal device to support the terminal device's location. The location server may also include a Location Management Function (LMF) that supports the terminal device's location for NR or LTE radio access using the control plane location solution. Similarly, the network function server may function as a sensing server. A sensing server can be used to coordinate and / or assist in coordinating the sensing of one or more target objects by one or more wireless devices in a system. Wireless devices may include terminal devices, base stations, access points (APs), other mobile devices, satellites, or any combination thereof. Wireless devices capable of performing RF sensing may be referred to herein as “sensing nodes”. To perform RF sensing, a sensing server can coordinate a sensing session during which one or more RF sensing nodes can perform RF sensing by transmitting RF signals (e.g., sensing reference signals) and measuring reflected signals or "echo signals." For example, reflected signals and object / target detection can be determined based on channel state information (CSI) received at a receiving device. To facilitate sensing (e.g., within a sensing session between one or more sensing nodes), the sensing server can provide data (e.g., "auxiliary data") to the sensing nodes to facilitate RS transmission and / or measurement, object / target detection, or any combination thereof. Such data may include RS configuration indicating which resources (e.g., time and / or frequency resources) (e.g., within the sensing session) can be used to transmit RS for RF sensing. According to some embodiments, the sensing server may include a Sensing Management Function (SMF).

[0194] External client 408 may be a web server or remote application associated with terminal device 401 (e.g., accessible to the user of terminal device 401), or a server, application, or computer system that provides location services to other users. This may include obtaining and providing the location of terminal device 401 (e.g., enabling services such as friend or relative finder, child or pet location). Alternatively, external client 408 may obtain the location of terminal device 401 and provide it to emergency service providers, etc.

[0195] Satellite 403 can be a satellite in a Global Navigation Satellite System (GNSS) and / or an NTN satellite. GNSS includes the Global Positioning System (GPS), Galileo, BeiDou, etc. The satellite can communicate with one or more network devices and / or one or more terminal devices. The satellite can be used for communication positioning in one or more ways. For example, the satellite can be part of a GNSS. Positioning using RF signals from a GNSS satellite can include measuring multiple GNSS signals at a GNSS receiver on a mobile device to perform highly accurate positioning, such as carrier-based positioning. Alternatively or concurrently, the satellite can be used for NTN-based positioning; in other words, functionally, the satellite can operate as a TRP (or TP) of a network (e.g., LTE and / or NR networks). Specifically, the reference signals transmitted by the NTN satellite are similar to those transmitted by the base station and are coordinated by a network function server, which can then operate as a location server. In some implementations, the satellites used for NTN-based positioning can be different from those used for GNSS-based positioning. In some implementations, NTN nodes may include non-ground vehicles such as aircraft, balloons, and drones, which can supplement or replace NTN satellites. RF sensing can be further performed using NTN satellites and / or other NTN platforms.

[0196] Generally, the wireless system 400 can realize communication between the terminal device 401 and other devices, positioning of the terminal device 401 and / or other devices, RF sensing performed by the terminal device 401, and / or combinations thereof. For example, the system can estimate the location of the terminal device based on RF signals received and / or transmitted by the terminal device 401 and the known locations of other components (e.g., satellites, base stations, access points) that transmit and / or receive RF signals. Additionally, RF sensing can be performed using wireless devices such as terminal devices, base stations, and satellites (and / or other NTN platforms that can be implemented on aircraft, drones, balloons, etc.). For example, RF sensing of one or more target objects can be performed using RF signals transmitted by one or more wireless devices. For example, RF sensing of one or more target objects can be performed using RF signals received by one or more wireless devices.

[0197] Referring to Figure 4, terminal device 401 can access network 406 via base station using the first communication link 410 to send and receive information with network-connected devices (such as network function server 407). Terminal device 401 can also access network 406 via AP using the second communication link 430 to send and receive information with network-connected devices (such as network function server 407). Terminal device 401 can use the third communication link 420 to communicate with other devices 405.

[0198] It should be noted that Figure 4 provides only a general illustration of the various components. Some or all of it may be used, or a component may be copied as appropriate. For example, although Figure 4 shows only one terminal device 405, it should be understood that many UEs (e.g., hundreds, thousands, millions, etc.) may use the system. Similarly, the system may include more or fewer base stations 402 and / or APs 405 than shown in Figure 4. The connections between the various components shown in Figure 4 include data and signaling connections, which may include additional (intermediate) components, direct or indirect physical and / or wireless connections and / or additional networks. Furthermore, components may be rearranged, combined, separated, replaced, and / or omitted depending on the required functionality. In some implementations, for example, an external client 408 may connect directly to a network function server 407. Those skilled in the art will recognize many modifications to the illustrated components.

[0199] While ground components such as access points (APs) and base stations can be fixed, this is not the case in some implementations. Mobile components can be used. For example, in some implementations, the location of terminal device 401 can be estimated at least in part based on measurements of RF signals transmitted between terminal device 401 and one or more other terminal devices 405 (which can be mobile or fixed). As shown in Figure 4, other terminal devices may include, for example, portable Wi-Fi 405-1, smartwatch (or wristband) 405-2, vehicle 405-3, mobile phone 405-5, laptop 405-5, static communication / positioning devices, or other static and / or terminal devices capable of providing wireless signals for locating terminal device 401, or combinations thereof. The wireless signals from terminal device 405 for locating terminal device 401 may include RF signals using, for example, Bluetooth, IEEE 802.11x (e.g., Wi-Fi), Ultra Wideband (UWB), IEEE 802.15x, or combinations thereof. Terminal device 405 may additionally or alternatively use non-RF wireless signals (such as cameras) to locate terminal device 501, such as infrared signals or other optical technologies.

[0200] It should be noted that the terminal devices, network function servers, or other components in this system can execute the solutions of the embodiments of this application.

[0201] It should be understood that the network architecture, wireless system, and service scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0202] The Wireless System 500 uses several Reference Signals (RSs) during communication functions, such as Channel State Information RS (CSI-RS), Sounding Reference Signals (RS), Positioning Reference Signals (PRS), and Synchronization Signal Blocks (SSBs). Theoretically, these could also be used for RF sensing. However, reference signals used for communication may not be reusable for sensing due to varying requirements. For example, an SSB occupies 240 subcarriers in the frequency domain. Assuming a subcarrier spacing of 30kHz, the SSB's bandwidth is 7.2MHz, corresponding to a distance resolution of approximately 20.83m, which may be insufficient to meet sensing performance requirements.

[0203] Therefore, a dedicated SeRS is required.

[0204] When SeRS uses an OFDM waveform (e.g., SeRS generated using the scheme shown in Figure 1 and transmitted via an OFDM radar as shown in Figure 3), time delay and Doppler estimation can be performed based on a two-dimensional FFT (2D-FFT) algorithm. Doppler estimation utilizes the phase shift phenomenon caused by Doppler on the same subcarrier for different symbols. Therefore, when performing Doppler estimation, the echo signal needs to be sampled in time with the length of the CP-OFDM symbol as the sampling interval. However, in the time resource allocation method shown in Figure 2, to achieve alignment of time slots with different parameter sets in each half-frame, the first symbol in each half-frame is given a longer CP, or in other words, the first CP-OFDM symbol in each half-frame is made longer. This processing results in non-uniform sampling of the echo signal, leading to deterioration of Doppler estimation performance and increased processing complexity.

[0205] In one possible implementation, the 0.5ms half-frame alignment is not considered, thus ensuring that all CP-OFDM symbols within the SeRS have the same CP length. For example, the CP length is the normal CP used in NR (i.e., length 144k·2). -μ Or 144κ·2 -μ +16κ) or extended CP (i.e., length 512κ·2) -μ It should be understood that the CP length can also be other lengths, and this application does not limit this. Since the CP length determines the maximum unambiguous distance, the larger the CP length, the larger the maximum unambiguous distance. Therefore, as an example, the CP length can be greater than the normal CP used in NR.

[0206] However, in this case, SeRS can interfere with the communication signals, such as inter-carrier interference.

[0207] Therefore, how to adapt a dedicated sensing RS to the current communication system is an urgent problem to be solved.

[0208] Figure 5 is a schematic diagram of a communication method 500 applicable to an embodiment of this application.

[0209] It should be understood that the embodiments shown below do not particularly limit the specific structure of the execution subject of the method provided in the embodiments of this application. As long as communication can be performed according to the method provided in the embodiments of this application by running a program that records the code of the method provided in the embodiments of this application, for example, the execution subject of the method provided in the embodiments of this application may be a first device (e.g., a sensing node or a transmitting node; or, a network device or a terminal device, etc., the function of the sensing node or the transmitting node may be implemented by the network device or the terminal device) and a first entity (e.g., a network entity (e.g., a sensing management function (SMF) network element, etc.)); or, a functional module in the first device and the first entity that can call and execute the program.

[0210] Without loss of generality, the communication method provided in the embodiments of this application will be described in detail below using the interaction between the first device and the first entity as an example.

[0211] It should be understood that Figure 5 illustrates the steps or operations of the communication method, but these steps or operations are merely examples. Other operations or variations of the operations shown in Figure 5 may also be performed in the embodiments of this application.

[0212] Method 500 may include the following steps:

[0213] S501: The first device acquires the sensing signal.

[0214] The sensing signal is used to sense the target object and is carried in a first resource. The time-domain resources of the first resource are in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

[0215] Optionally, the first resource may be used solely for sensing.

[0216] Optionally, the length of the time-domain resource of the first resource is an integer multiple of the length of an OFDM symbol, an integer multiple of the time slot length, an integer multiple of the half-subframe length, an integer multiple of the subframe length, an integer multiple of the frame length, or an integer multiple of a preset time length.

[0217] It should be noted that the length of the time domain resource of the first resource can also be referred to as the time length of the first resource, the size of the first resource, the time domain size of the first resource, etc., and the embodiments of this application do not limit its name.

[0218] It should be noted that OFDM symbols, time slots, half-subframes, subframes, and frames correspond to the time resource granularity of current technologies (e.g., LTE or NR systems). That is, in existing communication systems, possible time resource granularities include OFDM symbol length, time slots, half-subframes, subframes, and frames. For example, a subframe may be 1ms long. It is understood that the subframe length may change in future communications. This application applies to all cases where the granularity is subframe, without imposing any specific limitations on the subframe length. For details, please refer to the relevant description in Figure 2 above; this application will not repeat it here.

[0219] It should be noted that the first resource in this application includes time-domain resources and the corresponding frequency-domain resources. In other words, the first resource can correspond to a continuous time range in the time domain and one or more continuous or discontinuous frequency ranges in the frequency domain. The descriptions and limitations of the first resource in the embodiments of this application only apply to the time-domain resources corresponding to the first resource, and do not limit the frequency-domain resources corresponding to the first resource.

[0220] It is understandable that the temporal domain resources of the first resource are consistent with the granularity of the temporal resources in the current technology. Thus, the first resource can share a set of temporal resource partitioning system with the current technology, so that the start and end positions of the sensing resources are aligned with the communication resources. In other words, it avoids the existence of unusable time intervals between sensing resources and communication resources, such as an interval of half the length of an OFDM symbol (which cannot be used for communication transmission), thereby avoiding the waste of time resources and reducing the impact of sensing on the system.

[0221] It should also be noted that the preset time length can be predefined by the protocol; or it can be determined by the first device itself; or it can be issued to the first device by other devices, nodes, equipment, or network elements (which can also be functional modules capable of calling and executing programs). This application does not limit how the preset time length is specifically determined or obtained. The preset time length is also used to align the time-domain start and end positions of the first resource with the communication resource. For example, the preset time length can be 0.25 milliseconds, 0.5 milliseconds, 0.75 milliseconds, 1 millisecond, or 1.25 milliseconds, etc. This application does not limit the specific value of the preset time length in its embodiments.

[0222] Optionally, the time domain start position of the first resource is the same as the time domain start position of the fifth resource, and the time domain end position of the first resource is the same as the time domain end position of the fifth resource.

[0223] Optionally, the fifth resource is used to transmit communication signals, and its frequency domain position is different from that of the signal carried on the first resource. That is, the first resource can be time-domain aligned with a segment of resources used for communication.

[0224] It should be noted that for details regarding the first resource, please refer to the relevant description of the special resource in Figure 6 below, which will not be repeated here.

[0225] Optionally, the sensing signal is carried on a first resource, including: the sensing signal is carried on one or more second resources, wherein the first resource includes the one or more second resources.

[0226] Wherein, at least one of the one or more second resources includes M consecutive first time units, where M is a positive integer, and any two first time units carry the same signal, and the M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

[0227] Optionally, the sensing signal includes signals carried over the M consecutive first time units.

[0228] Optionally, the first resource may include only the second resource (i.e., the first resource and the second resource are the same); or the second resource may be a subset of the first resource.

[0229] In other words, the first resource can be considered as a segment of resources capable of performing perception-related operations, while the second resource is the portion of the first resource used to carry perception signals. That is, the first resource can be used entirely to carry perception signals; or it can be used partially to carry perception signals, thus the first resource may also include other resources (e.g., the third and / or fourth resources) used to perform perception-related operations (e.g., switching). The embodiments of this application will be described in detail below, and will not be repeated here.

[0230] It is understandable that transmitting a CP (Confirmation Point) typically consumes resources, leading to an increase in transmit power. Furthermore, the design of the CP length and subsequent configuration / indication processes increase system implementation complexity and signaling overhead. For example, the CP length may be related to the maximum unambiguous sensing distance. When the maximum unambiguous sensing distance requirement changes, the CP length needs to be adjusted, increasing system implementation complexity and involving signaling indication, which in turn increases signaling overhead. Therefore, based on the above scheme, allowing M consecutive first time units to not carry CPs can effectively reduce transmit power, achieving energy savings or equivalently increasing transmit signal power. Moreover, since the sensing signal does not carry communication information, allowing any two first time units among the M consecutive first time units to carry the same signal will not affect sensing performance, and carrying the same signal allows the signal carried by the previous time unit to be used as the equivalent CP of the signal carried by the current time unit. The length of the equivalent CP is adjustable, and the specific length is determined by the sensing receiving node (receiving the sensing signal). Theoretically, the maximum equivalent CP length is M / 2 first time units. Therefore, the above scheme can also eliminate the need for CP length design and configuration / instruction process, reducing the complexity of system implementation and signaling overhead.

[0231] Figure 6 is a schematic diagram of a first resource applicable to an embodiment of this application.

[0232] It should be noted that the first resource in this application corresponds to resources in both the time domain and the frequency domain; that is, the first resource includes resources in both the time domain and the frequency domain. In other words, the first resource can correspond to a continuous time range in the time domain, and can correspond to one or more continuous or discontinuous frequency ranges in the frequency domain. The time domain resources and frequency domain resources corresponding to the first resource are described below.

[0233] Figure 6(a) illustrates the temporal resource of the first resource. For ease of understanding, Figure 6(a) uses the example where the length of the temporal resource of the first resource is K times the length of the OFDM symbol (K is a positive integer), and does not constitute a limitation on the relationship between the length of the temporal resource of the first resource and the length of the OFDM symbol in this application. The first resource is a segment of resources used for sensing-related operations. As shown in Figure 6(a), the length of the temporal resource of the first resource is the same as the time length corresponding to K consecutive OFDM symbols, thereby achieving time resource alignment between the first resource and the current communication system, reducing the impact of sensing on the system.

[0234] As shown in Figure 6(a), the first resource includes a second resource, which is the resource that actually carries the sensing signal. The second resource includes M consecutive first time units. The M consecutive first time units are used to carry the sensing signal, and any two of the M consecutive first time units carry the same signal. The M consecutive first time units do not carry the cyclic prefix (CP) of the sensing signal.

[0235] Optionally, the time length of each first time unit is That is, the time length of each first time unit is the same as the time length of the portion of the OFDM symbol used to carry the data.

[0236] Furthermore, Figure 6(a) is only used to illustrate the relationship between the first resource, the second resource, and the first time unit, and does not constitute a limitation on the number of second resources included in the first resource. The first resource may also include multiple second resources. For information on other resources that the first resource may include, as well as the specific contents of the first resource, the second resource, and / or the first time unit, please refer to the following description, which will not be repeated in Figure 6 in this application.

[0237] Figure 6(b) illustrates the frequency domain resources of the first resource. It should be noted that the frequency domain resources of the first resource may correspond to one frequency band or multiple frequency bands. When the frequency domain resources of the first resource correspond to multiple frequency bands, these multiple frequency bands may be continuous frequency bands, and / or discrete frequency bands, and / or frequency bands with overlapping frequency domains. This application does not limit the number of frequency bands corresponding to the frequency domain resources of the first resource or the specific frequency bands. That is, the first resource corresponds to one or more continuous or discontinuous frequency ranges in the frequency domain.

[0238] For ease of understanding, Figure 6(b) illustrates two possible scenarios for the frequency domain resources of the first resource. As shown in scenario 1, the first resource may correspond to only one frequency band (f1), i.e., the first resource can be carried by a fixed frequency band. As shown in scenario 2, the first resource may also correspond to multiple frequency bands (e.g., four frequency bands (f2, f3, f4, and f5)), and the relationship between the multiple frequency bands includes at least one of overlapping (e.g., f2 and f3), discrete (e.g., f3 and f4), and / or continuous (e.g., f4 and f5).

[0239] It should be noted that for the first resource corresponding to multiple frequency bands, the time-domain resources (e.g., t1, t2, t3, and t4) corresponding to each frequency band resource (e.g., second resource #2#1, second resource #2#1, second resource #2#4) are continuous. That is, the time-domain resources corresponding to the first resource are continuous, and the frequency-domain resources corresponding to the first resource may include one or more continuous or discontinuous frequency bands.

[0240] Optionally, when the sensing signal is carried on multiple second resources, the signals carried by any two first time units located in different second resources can be the same or different. This application does not limit this aspect.

[0241] For example, when the sensing signal is carried on multiple second resources, for one of the multiple second resources, the first time unit included therein carries the same signal; for different second resources (e.g., second resource #1 and second resource #2), the first time units included therein may carry the same or different signals (e.g., second resource #1 includes multiple consecutive first time units #1, second resource #2 includes multiple consecutive first time units #2, wherein the first time units #1 and the first time units #2 may carry the same or different signals).

[0242] Optionally, when the sensing signal is carried on multiple second resources, any two of the multiple second resources may have different sizes; or, any two of the multiple second resources may have the same size; or, some of the multiple second resources may have the same size; or, any two of the multiple second resources may include different numbers of first time units; or, any two of the multiple second resources may include the same number of first time units; or, some of the multiple second resources may include the same number of first time units.

[0243] It should be understood that the size of the second resource can also be referred to as the time length of the second resource, the length of the time domain resource of the second resource, the time domain size of the second resource, etc., and the embodiments of this application do not limit its name.

[0244] For example, different second resources among a plurality of second resources (e.g., second resource #1, second resource #2, and second resource #3) may each include the same number of first time units (e.g., second resource #1 includes M1 consecutive first time units, second resource #2 includes M1 consecutive first time units, and second resource #3 includes M1 consecutive first time units). Alternatively, it may be said that second resource #1, second resource #2, and second resource #3 are of the same size.

[0245] For example, different second resources among a plurality of second resources (e.g., second resource #1, second resource #2, and second resource #3) may each include different numbers of first time units (e.g., second resource #1 includes M1 consecutive first time units, second resource #2 includes M2 consecutive first time units, and second resource #3 includes M3 consecutive first time units, where M1 ≠ M2 ≠ M3). Alternatively, it can be said that second resource #1, second resource #2, and second resource #3 are of different sizes.

[0246] For example, different second resources among a plurality of second resources (e.g., second resource #1, second resource #2, and second resource #3) may each include the same and / or different numbers of first time units, that is, some second resources include the same number of first time units (e.g., second resource #1 includes M1 consecutive first time units, second resource #2 includes M2 consecutive first time units, and second resource #3 includes M1 consecutive first time units, where M1 ≠ M2). Alternatively, it can also be said that second resources #1, second resource #2, and second resource #3 are partially the same size.

[0247] In this scenario, sensing signals carried on different secondary resources can have different durations, increasing the flexibility of sensing resource allocation.

[0248] Optionally, the time length of each first time unit is Where μ is a positive integer.

[0249] Optionally, the subcarrier spacing carried on each first time unit is 15×2. μ kHz without CP-OFDM symbol.

[0250] When performing Doppler estimation based on FFT processing, compared to the time sampling interval of one CP-OFDM length in CP-OFDM radar, the above scheme can perform time sampling with a smaller sampling interval, that is, the length of one time unit or the length of an OFDM symbol without CP, which can improve the performance of Doppler estimation.

[0251] Optionally, the first resource further includes a third resource; the third resource is used for switching from communication to sensing; and / or, the third resource is used for switching from sensing to communication; and / or, the third resource is used for switching within sensing.

[0252] For example, when the third resource is located at the head of a dedicated resource (i.e., the time domain start position of the third resource is the same as the time domain start position of the first resource), the third resource can be used for switching from communication to sensing. When the third resource is located at the tail of a dedicated time resource (i.e., the time domain end position of the third resource is the same as the time domain end position of the first resource), the third resource can be used for sensing communication switching. When the third resource is located inside a dedicated resource (i.e., the time domain start position of the third resource is after the time domain start position of the first resource, and the time domain end position of the third resource is before the time domain end position of the first resource), the third resource can be used for switching within sensing.

[0253] Optionally, the first resource may include one or more third resources. If the first resource includes multiple third resources, the duration of each third resource may be the same or different. This application embodiment does not limit the number of third resources included in the first resource or the duration of the third resources.

[0254] It should be noted that for details regarding the third-party resources, please refer to the relevant description of time gaps below, which will not be repeated here.

[0255] In this context, when third resources are used for handover from communication to sensing or from sensing to communication, the mutual interference between communication signals can be reduced. For example, sensing signals may reflect back to the receiver due to multipath propagation; or, due to non-ideal isolation of the transmitting and receiving antennas, sensing signals may leak to the receiver. Without third resources, reflected or leaked sensing signals may be received along with subsequent communication signals, thus degrading the demodulation performance of the communication signals. On the other hand, third resources can also reduce the difficulty of handover implementation and lower the capability requirements of sensing nodes. When third resources are used for handover within sensing, they can be used to implement frequency hopping, subband switching, component carrier (CC) switching, antenna switching, antenna panel switching, antenna subarray switching, and antenna beam switching. Based on frequency hopping or channel splicing, multiple small bandwidths, multiple subbands, or multiple CCs can be aggregated into a large bandwidth to meet sensing performance requirements while reducing the complexity of implementing large bandwidths. Through beam switching, antenna switching, antenna panel switching, and antenna subarray switching, sensing targets from different directions / angles can be achieved, which helps improve angle estimation performance.

[0256] Optionally, if the second resource is located after the third resource, the first resource further includes a fourth resource; the fourth resource is located between the first time unit of the third resource and the second resource; the fourth resource is used to carry the CP of the sensing signal.

[0257] Optionally, corresponding to the case where the first resource includes one or more third resources, the first resource may also include one or more fourth resources.

[0258] In one implementation, the size of the fourth resource is related to the sensing requirements. For example, the size of the fourth resource is related to the maximum unambiguous detection distance.

[0259] It should be noted that for details regarding the fourth resource, please refer to the description below regarding the possible placement of CP; this application will not elaborate further here.

[0260] In this configuration, the signal carried by the first time unit in each first resource has a CP (Concurrent Phase). This allows the position of the transmitting window to be aligned with the position of the receiving window when the signal carried by the first time unit in the second resource is processed at the sensing receiving side.

[0261] Optionally, if the second resource and the first resource have the same time-domain start position, the last OFDM symbol preceding the second resource has a zero-tail or low-power tail signal.

[0262] Optionally, the CP of the signal carried by the first time unit in the second resource may be placed before the first resource, and its position may overlap in time with the zero-tail or low-power tail signal of the last OFDM symbol before the second resource.

[0263] Optionally, the duration of the zero-tail or low-power tail signal of the last OFDM symbol preceding the second resource can be greater than or equal to the length of the CP.

[0264] It should be noted that the specific details regarding "placing CP before the first resource" can be found in the relevant description in Figure 10 below, and will not be elaborated upon here.

[0265] In this scenario, the CP can be located within the communication resource, allowing the last OFDM symbol preceding the first resource to have a zero-tail or low-power tail signal, thus reducing the impact of the CP on that last OFDM symbol. Furthermore, when processing the signal carried on the first time unit in the first resource at the sensing receiver side, the positions of the transmitting window and the receiving window can be aligned.

[0266] It should be noted that "the length of the time domain resource of the first resource is an integer multiple of the time length of the time unit in the current technology" can include the following implementation methods:

[0267] In one possible implementation, the length of the time-domain resource of the first resource is in OFDM symbol granularity, including: the first resource includes A series of OFDM symbols.

[0268] in, Greater than or equal to 2, The length of the OFDM symbol is determined according to the parameter set μ0, where μ0 is an integer.

[0269] Optionally, the OFDM symbol is a symbol with a normal CP among the CP-OFDM symbols shown in Figure 2 above. That is, the number of NR time units corresponding to the time length of the CP of the OFDM symbol is... and / or

[0270] In this case, the number of NR time units (denoted as Tc) corresponding to the length of the time-domain resource of the first resource. Satisfy the following formula:

[0271] in, express The number of long CP symbols in a CP-OFDM symbol set, of which For example, a non-negative integer. Or 1. The number of NR time units corresponding to the CP length of a long CP symbol is The number of NR time units corresponding to the CP length of a normal CP symbol is 2192κ is the number of NR time units corresponding to the length of an OFDM symbol with normal CP (2192 = 2018 + 144).

[0272] As mentioned earlier, in the NR time slot format, to ensure that time slots with different parameter sets are aligned every half subframe (i.e., 0.5ms), the first OFDM symbol within each half subframe has a longer CP. In the first resource including... In the case of a series of OFDM symbols, the above In the calculation formula This item reflects that "the first OFDM symbol within each half-frame has a longer CP". This ensures that the first resource can share a time resource allocation system with current technology, aligning the start and end positions of sensing resources with communication resources, avoiding waste of time resources, and reducing the impact of sensing on the system.

[0273] In one possible implementation, the length of the temporal domain resource of the first resource is granular with time slots, including: the first resource includes The consecutive time slots.

[0274] in, Greater than or equal to 2, The time slot length is determined based on the parameter set μ0, where μ0 is an integer.

[0275] In this case, the number of NR time units corresponding to the length of the time-domain resource of the first resource. Satisfy the following formula:

[0276] If μ0 = 0, then

[0277] Otherwise, when μ0≥1,

[0278] in, express The number of long CP time slots in a time slot, where a long CP time slot refers to the number of NR time units corresponding to the CP length of the first CP-OFDM symbol in that time slot. 2192κ is the number of NR time units corresponding to the length of an OFDM symbol with normal CP (2192 = 2018 + 144). For example, non-negative integers. 30720κ represents the number of NR time units corresponding to the time length of one time slot when the subcarrier spacing is 15kHz (in this case, one time slot can include two long CP OFDM symbols).

[0279] As mentioned earlier, in the NR time slot format, to ensure that time slots with different parameter sets are aligned every half subframe (i.e., 0.5ms), the first OFDM symbol within each half subframe has a longer CP. In the first resource including... In the case of a series of consecutive time slots, the above In the calculation formula This item reflects that "the first OFDM symbol within each half-frame has a longer CP". This ensures that the first resource can share a time resource allocation system with current technology, aligning the start and end positions of sensing resources with communication resources, avoiding waste of time resources, and reducing the impact of sensing on the system.

[0280] In one possible implementation, the length of the temporal resource of the first resource is in half-frame granularity, including: the first resource includes A series of consecutive half-frames.

[0281] in, This is an integer. In one implementation, the length of a half-frame is 0.5ms. In this case, the number of NR time units corresponding to the length of the temporal resource of the first resource. Satisfy the following formula:

[0282] In one possible implementation, the length of the temporal resource of the first resource is at the subframe level, including: the first resource including The subframes are consecutive. In one implementation, the length of a subframe is 1 ms.

[0283] In this case, the number of NR time units corresponding to the length of the time-domain resource of the first resource. Satisfy the following formula:

[0284] In one possible implementation, the length of the temporal resource of the first resource is measured in frames, including: the first resource includes The frames are consecutive. In one implementation, the frame length is 10 ms.

[0285] In this case, the number of NR time units corresponding to the length of the time-domain resource of the first resource. Satisfy the following formula:

[0286] Optionally, for the above schemes, μ0 is less than or equal to μ, where μ is the parameter set corresponding to any first time unit. μ0 being less than or equal to μ can improve the utilization rate of the first resource.

[0287] In one possible implementation, when the length of the time-domain resource of the first resource is granular with a preset time, μ is greater than or equal to 2, where μ is a parameter set corresponding to any first time unit.

[0288] Optionally, the preset time length is 0.25ms, 0.75ms, or 1.25ms.

[0289] Optionally, before step S501, method 500 may further include step S502: obtaining first information, the first information including information about the first resource, the information about the first resource including any one or more of the following:

[0290] The time-domain start position of the first resource, the frequency-domain start position of the first resource, the duration of the first resource, or the frequency-domain bandwidth of the first resource.

[0291] Optionally, the first information is determined based on one or more of the following:

[0292] The switching time information, the maximum channel bandwidth supported by the first device under the given parameter set, the beamwidth, or the information of the target object.

[0293] Optionally, the information of the first resource may also include the size and quantity of the second resource, the size and quantity of the third resource, and / or the time-domain size and quantity of the fourth resource.

[0294] Optionally, the frequency domain resource bandwidth corresponding to the second resource does not exceed the maximum channel bandwidth supported by the first device under a given parameter set.

[0295] Optionally, the size of the third resource does not exceed the time required for the switchover.

[0296] Optionally, the first information further includes configuration information, which includes one or more of the following: the subcarrier spacing of the first time unit, the signal carried by the first time unit, the number of second resources, the time-domain start position of the second resource, the frequency-domain start position of the second resource, the number of third resources, the time-domain start position of the third resource, the frequency-domain start position of the third resource, the number of fourth resources, the time-domain start position of the fourth resource, the frequency-domain start position of the fourth resource, or the number of first time units included in each of the one or more second resources.

[0297] In this scenario, information about the first resource and / or other resources within the first resource (e.g., the temporal size and quantity of different resources) can be determined based on the specific configuration of the first device (e.g., based on the capabilities of the first device). Furthermore, the first resource for sensing and its corresponding configuration can be determined based on information about the target object, leading to more rational resource allocation and use. For example, the size of the CP can be determined based on information about the target object (e.g., distance), thus determining the size of the fourth resource.

[0298] Optionally, the first information is determined and sent by the first entity, thereby the first device receives the first information from the first entity.

[0299] Optionally, before step S502, method 500 may further include step S503: sending second information, the second information including one or more of the following: time information required for switching, the maximum channel bandwidth supported by the first device under a given set of parameters, or beamwidth.

[0300] In this situation, the first device completes capability reporting through the second information.

[0301] Optionally, after step S501, method 500 may further include step S504: sending a sensing signal.

[0302] It should be noted that the specific process of sensing and detecting target objects through sensing signals can be found in the relevant descriptions in the current technology, and will not be repeated here.

[0303] Figure 7 is a schematic diagram of a special resource applicable to an embodiment of this application.

[0304] It should be noted that the dedicated resource (optionally, the dedicated resource is an example of the first resource mentioned above) is a resource that can be used to carry sensing signals, and can also be called a SeRS resource. The embodiments of this application do not limit the name of the dedicated resource.

[0305] Optionally, during the sensing process, dedicated resources can be used entirely to carry the sensing signal; or, only a portion of the dedicated resources can carry the sensing signal. This application does not limit the specific circumstances under which dedicated resources actually carry the sensing signal.

[0306] Optionally, dedicated resources can be configured to the sensing nodes by the first entity; or they can be predefined by the protocol; or they can be determined by the first device itself. The allocation method of dedicated resources will not be elaborated upon in this embodiment.

[0307] It should be noted that multiple symbols #1 can be placed within the dedicated resource. Symbol #1 is a symbol that carries the sensing signal, and symbol #1 does not include CP. In other words, the dedicated resource can include multiple symbols carrying the same sensing signal, and these symbols do not have CP. Therefore, symbol #1 can also be called a CP-free OFDM symbol. The name of symbol #1 is not limited in the embodiments of this application.

[0308] Optionally, symbol #1 (or no CP-OFDM symbol) is an example from the first time unit mentioned above.

[0309] Optionally, one or more consecutive CP-OFDM symbols are an example of the second resource above.

[0310] Understandably, for CP-OFDM symbols in current technology, transmitting the CP consumes some resources, leading to an increase in transmit power. Furthermore, the length design of the CP and subsequent configuration / indication processes increase system implementation complexity and signaling overhead. For example, the CP length may be related to the maximum unambiguous sensing distance. When the maximum unambiguous sensing distance requirement changes, the CP length needs to be adjusted, which increases system implementation complexity and involves signaling indication, further increasing signaling overhead. Therefore, the CP-free CP-OFDM symbols in this application embodiment can effectively reduce transmit power and implementation complexity overhead, achieving energy savings or equivalently increasing transmit signal power. The absence of CP shortens the symbol length, enabling uniform time sampling with smaller sampling intervals during Doppler estimation based on FFT processing, thereby improving Doppler estimation performance. Furthermore, since SeRS does not carry communication information, and dedicated resources include multiple identical CP-free OFDM symbols, these CP-free OFDM symbols can also be considered to have an equivalent CP (i.e., the tail signal of the previous symbol is the same as the tail signal of the current symbol, so the tail signal of the previous symbol can be regarded as the equivalent CP of the signal carried by the current symbol). The length of the equivalent CP is adjustable, and the specific length is determined by the sensing receiving node (receiving the sensing signal). Therefore, the solution of this application embodiment can also eliminate the CP length design and configuration / indication process, reducing system implementation complexity and signaling overhead.

[0311] It should be noted that, as shown in Figure 7(a), the time-domain start position of the dedicated resource is the same as the time-domain start position of the communication resource in the current technology, and the time-domain end position of the dedicated resource is the same as the time-domain end position of the communication resource in the current technology. That is, the dedicated resource can be time-domain aligned with a segment of resources used for communication.

[0312] In one possible implementation, as shown in Figure 7(b), the duration of the dedicated resource is at the time slot granularity. That is, the duration of the dedicated resource is determined based on the duration of the time slot.

[0313] It is understood that time slots correspond to the concept of time slots used in the communication field of current technologies (e.g., LTE systems or NR systems), and can be referred to the relevant description in Term 5 (Figure 2) above. The following explanation uses time slots in NR systems as an example.

[0314] Optionally, the parameter set corresponding to the dedicated resource is μ0, A series of consecutive time slots, of which Greater than or equal to 2 and μ0 less than or equal to μ, where μ is the parameter set corresponding to the CP-ODFM symbol.

[0315] In this case, the number of NR time units corresponding to the duration of the dedicated resource. Satisfy the following formula:

[0316] If μ0 = 0, then

[0317] Otherwise, when μ0≥1,

[0318] in, express The number of long CP time slots in a time slot, where a long CP time slot refers to the number of NR time units corresponding to the CP length of the first CP-OFDM symbol in that time slot. 2192κ is the number of NR time units corresponding to the length of an OFDM symbol with normal CP (2192 = 2018 + 144). For example, non-negative integers. 30720κ is the number of NR time units corresponding to the time length of one time slot when the subcarrier spacing is 15kHz (i.e., 15×20). (In this case, one time slot can include two OFDM symbols with long CP.)

[0319] Dedicated resources can be placed One without CP-OFDM symbol, This represents the number of NR time units corresponding to a time length without CP-OFDM symbols. This indicates rounding down to the nearest integer.

[0320] Optionally,

[0321] Optionally, the subcarrier spacing corresponding to the absence of CP-OFDM symbols is 15×2. μ kHz.

[0322] Understandably, when performing Doppler estimation based on FFT processing, compared to the time sampling interval of one CP-OFDM length in CP-OFDM radar, the above scheme can have a smaller sampling interval (time sampling interval of one length without CP-OFDM), thus improving the performance of Doppler estimation.

[0323] The number of NR time units corresponding to the remaining time length of the dedicated resources Satisfy the following formula:

[0324] Here, mod represents the modulo operation. For example, 12 mod 5 = 2.

[0325] Optionally, when When it is an integer multiple of the half-frame length; or, when μ0 is greater than or equal to 1. for When the value is an integer multiple, the dedicated resource can contain [items]. One without CP-OFDM symbol.

[0326] In this case, the remaining resources are not included in the dedicated resources.

[0327] If μ0 = μ, 15 ​​non-CP-OFDM symbols can be placed in one time slot. For example, if μ0 = μ = 2, the SCS is 60 kHz, and... If it is 1 subframe or 4 time slots, then 4 × 15 = 60 CP-OFDM symbols can be placed in the dedicated resource.

[0328] In one possible implementation, as shown in Figure 7(c), the duration of the dedicated resource is symbol-granular. That is, the duration of the dedicated resource is determined based on the duration of the symbol.

[0329] It is understood that the symbols correspond to the concepts of symbols used in the communications field of current technologies (e.g., LTE systems or NR systems), and can be referred to the relevant descriptions in Term 5 (Figure 2) above. The following explanation uses OFDM symbols in NR systems as an example.

[0330] Optionally, the OFDM symbol is a symbol with a normal CP among the CP-OFDM symbols shown in Figure 2 above. That is, the number of NR time units corresponding to the time length of the CP of the OFDM symbol is... (Corresponding to the normal CP case of OFDM symbols with normal CP) and / or (Corresponding to the long CP case of OFDM symbols with normal CP).

[0331] Optionally, the parameter set corresponding to the dedicated resource is μ0, continuous. CP-OFDM symbols, among which Greater than or equal to 2 and μ0 less than or equal to μ, where μ is the parameter set corresponding to the CP-ODFM symbol.

[0332] Specifically, the number of NR time units corresponding to the duration of dedicated resources. Satisfy the following formula:

[0333] in, The unit is milliseconds (ms). express The number of long CP symbols in a CP-OFDM symbol set, of which For example, a non-negative integer. Or 1. The number of NR time units corresponding to the CP length of a long CP symbol is The number of NR time units corresponding to the CP length of a normal CP symbol is 2192κ is the number of NR time units corresponding to the length of an OFDM symbol with normal CP (2192 = 2018 + 144).

[0334] Dedicated resources can be placed One without CP-OFDM symbol, This indicates the number of NR time units corresponding to a time length without CP-OFDM symbols.

[0335] Optionally,

[0336] Optionally, the subcarrier spacing corresponding to the absence of CP-OFDM symbols is 15×2. μ kHz.

[0337] Understandably, when performing Doppler estimation based on FFT processing, compared to the time sampling interval of one CP-OFDM length in CP-OFDM radar, the above scheme can have a smaller sampling interval (time sampling interval of one length without CP-OFDM), thus improving the performance of Doppler estimation.

[0338] Number of NR time units corresponding to the remaining resources in the dedicated resources Satisfy the following formula:

[0339] Regarding the two possible implementation methods mentioned above It is defined with granularity based on the NR slot length, i.e., slot level; or with NR CP-OFDM length, i.e., symbol level. Therefore, dedicated resources can share a time resource allocation system with NR (i.e., the granularity of dedicated resources is the length of a CP-OFDM symbol or the length of an NR slot), thereby aligning the start and end positions of dedicated resources with NR, avoiding waste of time resources, and reducing the impact of sensing on the system.

[0340] For example, the length of one CP-OFDM symbol is 1 ms, while the length of one non-CP-OFDM symbol is 0.8 ms, and Sensing begins at 5ms (i.e., switching to sensing after transmitting 5 communication CP-OFDM symbols).

[0341] like If the symbol in the symbol is a non-CP-OFDM symbol, then the sensing ends at time 10.6ms (equal to 5 + 7 × 0.8), but communication can only start at time 11ms, which means there is a waste of 0.4ms of time resources.

[0342] like If the symbols in a symbol are those defined in NR (i.e., the time length of the dedicated resource is at the CP-OFDM symbol granularity), then the sensing ends at time 12ms (equal to 5 + 7 × 1), and communication can start from time 12ms, without wasting time resources.

[0343] It should be noted that, in the two possible implementation methods mentioned above, μ0 being less than or equal to μ can improve the utilization rate of dedicated resources.

[0344] For example, Let μ0 = 1 be the duration of three consecutive NR slots. (46080 = 1024 × 3 × 15). If μ0 is greater than μ, then the dedicated resource contains CP-OFDM symbols (length 2048κ) with parameter set μ = 0. Therefore, the number of CP-OFDM symbols that the dedicated resource can contain is... The remaining 1024κ means that half of the time-domain resources without CP-OFDM symbols are unusable. Therefore, when μ0 is less than or equal to μ, the time-domain resources within the dedicated resources can be fully utilized, resulting in a high utilization rate of sensing resources.

[0345] In one possible implementation, as shown in Figure 7(d), the duration of the dedicated resource is absolute time. It should be noted that the duration of the dedicated resource mentioned above is defined based on the CP-OFDM length or slot length, which are related to the parameter set μ0.

[0346] It is understood that the absolute time can refer to a definite length of time.

[0347] Optionally, the absolute time may be predefined by the protocol; or it may be determined by the device sending the sensing signal; or it may be sent to the device sending the sensing signal by other devices, nodes, equipment, or network elements (which may also be functional modules that can call and execute programs).

[0348] Optionally, the absolute time can be 0.25ms, 0.75ms, or 1.25ms. The specific length corresponding to the absolute time is not limited in the embodiments of this application.

[0349] It should be noted that this "absolute time" is consistent with the NR time resource allocation system, thereby aligning the start and end positions of dedicated resources with NR, avoiding the waste of time resources, and reducing the impact of sensing on the system.

[0350] Optionally, the duration of the dedicated resource can be an integer multiple of 0.25ms.

[0351] Dedicated resources can be placed One without CP-OFDM symbol, This indicates the number of NR time units corresponding to the dedicated resource. This indicates the number of NR time units corresponding to a single CP-OFDM symbol.

[0352] Optionally,

[0353] Optionally, the subcarrier spacing corresponding to the absence of CP-OFDM symbols is 15×2. μ kHz.

[0354] Time length of remaining resources in dedicated resources Satisfy the following formula:

[0355] Optionally, for the specific implementations of the dedicated resources shown above, the dedicated resources may also include time gaps.

[0356] Optionally, the time interval is one of the examples in the third resource mentioned above.

[0357] It should be noted that the embodiments of this application do not limit the location of the gap in the time domain of the dedicated resource.

[0358] Optionally, gap is used for switching from communication to sensing; and / or for switching from sensing to communication; and / or for switching within sensing.

[0359] For example, the switching from communication to sensing may include at least one of the following: switching from a communication frequency to a sensing frequency, or switching from a communication antenna (or beam) to a sensing antenna (or beam). In this case, the mutual interference between communication and sensing can be reduced.

[0360] For example, the sensed signal may be reflected back to the receiver due to multipath propagation; or, due to non-ideal isolation between the transmit and receive antennas, the sensed signal may leak to the receiver. Without a gap, the reflected or leaked sensed signal may be received along with subsequent communication signals, thus degrading the demodulation performance of the communication signal.

[0361] For example, the switching of sensing communication may include at least one of the following: switching from a sensing frequency to a communication frequency, or switching from a sensing antenna (or beam) to a communication antenna (or beam). In this case, the mutual interference between communication and sensing can also be reduced.

[0362] For example, the switching within the sensing process may include at least one of the following: switching of subbands or component carriers (CCs) during frequency hopping or channel stitching, or switching of antennas (or antenna panels, antenna subarrays, or beams). In this case, multiple small bandwidths, multiple subbands, or multiple CCs can be aggregated into a large bandwidth based on frequency hopping or channel stitching to meet sensing performance requirements while reducing the complexity of implementing large bandwidths. Beam switching, antenna switching, antenna panel switching, and antenna subarray switching can enable sensing of targets from different directions / angles, helping to improve angle estimation performance.

[0363] Figure 8 is a schematic diagram of the time interval applicable to embodiments of this application.

[0364] As shown in Figure 8(a), when the gap is located at the head of a dedicated resource (i.e., the time domain start position of the gap is the same as the time domain start position of the dedicated resource), the gap can be used for communication-to-sensing handover. When the gap is located at the tail of a dedicated time resource (i.e., the time domain end position of the gap is the same as the time domain end position of the dedicated resource), the gap can be used for sensing communication handover.

[0365] As shown in Figure 8(b), when the gap is located inside a dedicated resource (i.e., the time domain start position of the gap is after the time domain start position of the dedicated resource, and the time domain end position of the gap is before the time domain end position of the dedicated resource), the gap can be used for internal sensing switching.

[0366] Optionally, the signals carried by the CP-OFDM symbols before the handover are different from the signals carried by the CP-OFDM symbols after the handover. For example, there are N0 symbols before the handover, and the N0 symbols carry the same signal; after the handover, there are N1 symbols, and the N1 symbols carry the same signal, while the signals carried by the N0 symbols are different from those carried by the N1 symbols. Figure 8(b) shows the last two symbols before the handover (denoted as "penultimate" and "last," which are the same) and the two symbols after the handover (denoted as #0 and #1, which are the same).

[0367] Optionally, the size of the gap can be configured.

[0368] For example, the size of the gap is related to the capabilities of the sensing node. For instance, the sensing node's capability is reflected in the time required to perform frequency switching or beam switching. If the required time is short, a gap with a shorter duration can be configured. Conversely, if the sensing node's capability is reflected in the time required to perform frequency switching or beam switching, and the required time is long, a gap with a longer duration can be configured.

[0369] It should also be noted that, for the specific implementations of the dedicated resources shown above, the dedicated resources may include at least one segment of time-domain resources for carrying CP-OFDM symbols without CP, and each segment of time-domain resources may include at least one consecutive CP-OFDM symbol without CP. That is, the size of each segment of time-domain resources used to carry CP-OFDM symbols without CP can be the same or different, and this application does not limit this. In this case, resources for actual transmission of sensing signals can be allocated in the dedicated resources according to actual sensing needs, increasing the flexibility of sensing resource allocation.

[0370] Furthermore, since the CP-free OFDM symbols are identical within each time-domain resource segment, when at least two consecutive CP-free OFDM symbols exist within a time-domain resource segment, the signal carried by the preceding CP-free OFDM symbol can be considered as the equivalent CP of the signal carried by the following CP-free OFDM symbol, thereby aligning the transmitting end DFT window (Tx window) and the receiving end DFT window (Rx window) of the following CP-free OFDM symbol. However, the first CP-free OFDM symbol within each time-domain resource segment does not have an equivalent CP, therefore, there is a time delay between the transmitting end DFT window and the receiving end DFT window of the first CP-free OFDM symbol.

[0371] Figure 9 is a schematic diagram of a send and receive window.

[0372] As shown in Figure 9, symbols #0 to #3 are four consecutive CP-free OFDM symbols within a dedicated resource, and each symbol carries the same signal. For any one of symbols #1, #2, or #3, since the tail signal of the preceding symbol can be considered as the equivalent CP of the signal carried by that symbol, the DFT window at the receiver is aligned with the DFT window at the transmitter. For symbol #0, since symbol #1 and symbol #0 are identical, the header signal of symbol #1 can be considered as the equivalent cyclic suffix (CS) of the signal carried by symbol #0. In this case, when the sensing node (receiver) processes symbol #0, the DFT window at the receiver is shifted backward relative to the DFT window at the transmitter.

[0373] It should be understood that Figure 9 is for illustrative purposes only and does not constitute a limitation on the number of consecutive CP-OFDM symbols within the proprietary resources of this application.

[0374] To avoid delays in the DFT windows of the transmitter and receiver, the DFT window positions of the transmitter and receiver can be aligned using at least one of the following methods.

[0375] Method 1:

[0376] When a time-domain resource #1 exists within a dedicated resource (time-domain resource #1 is used to carry sensing signals, time-domain resource #1 is a resource corresponding to at least one consecutive CP-OFDM symbol without a CP-OFDM symbol, and symbol #0 is the first CP-OFDM symbol without a CP-OFDM symbol in time-domain resource #1), and the time-domain start position of time-domain resource #1 is the same as the time-domain start position of the dedicated resource (i.e., time-domain resource #1 is located at the beginning of the dedicated resource), the last CP-OFDM symbol transmitted on the communication resource (i.e., the CP-OFDM symbol preceding symbol #0) can have a low-amplitude tail signal (e.g., zero tail) or a low-power tail signal, so that a CP can be added before symbol #0, and the position of the CP coincides with the zero tail or low-power tail signal in time.

[0377] Figure 10 is a schematic diagram of a dedicated resource CP placement location applicable to an embodiment of this application.

[0378] As shown in Figure 10, the curves within a CP-OFDM symbol represent the amplitude or power of the signal, with the tail signal exhibiting low amplitude or low power. Due to the temporal superposition of CP, the demodulation performance of the tail signal of this CP-OFDM symbol is inferior to that of other parts of the symbol. Therefore, the tail signal of this CP-OFDM symbol may not carry information; or, the receiver may choose not to demodulate the tail signal of this CP-OFDM symbol.

[0379] For example, the CP-OFDM symbol can be a zero-tailed DFT-s-OFDM symbol, a unique word DFT-s-OFDM symbol, or a unique word OFDM symbol.

[0380] Optionally, the length of the CP without CP-OFDM symbol #0. Adjustable.

[0381] For example, the length of the CP without CP-OFDM symbol #0 is related to the sensing requirements. For instance, the maximum unambiguous sensing distance is R. max ,but It can satisfy: Greater than or equal to R max .

[0382] In this scenario, the CP can be located within the communication resource, allowing the last OFDM symbol preceding the first resource to have a zero-tail or low-power tail signal, thus reducing the impact of the CP on that last OFDM symbol. Furthermore, when processing the signal carried on the first time unit in the first resource at the sensing receiver side, the positions of the transmitting window and the receiving window can be aligned.

[0383] Method 2:

[0384] When a dedicated resource contains a time-domain resource #1 (time-domain resource #1 is used to carry sensing signals, and time-domain resource #1 is a resource corresponding to at least one consecutive CP-OFDM symbol without a CP, and symbol #0 is the first CP-OFDM symbol without a CP in time-domain resource #1) and a gap, and the gap is adjacent to time-domain resource #1 in the time domain and is located before time-domain resource #1, the CP of symbol #0 can be placed between the gap and time-domain resource #1.

[0385] Figure 11 is a schematic diagram of a dedicated resource CP placement location applicable to an embodiment of this application.

[0386] It should be understood that Figure 11 is for illustrative purposes only, showing the case of placing a CP in a dedicated resource with a gap, and does not constitute a limitation on the location of the gap within the dedicated resource.

[0387] As shown in Figure 11(a), gap#1 can be used to switch from communication to sensing. Thus, a CP for symbol #0 can be added after gap#1 to align the DFT window positions of the transmitting and receiving ends of symbol #0. gap#2 can be used to switch from sensing to communication. Since there is no transmission of sensing signals after gap#2, no CP needs to be placed after gap#2.

[0388] As shown in Figure 11(b), gap#3 can be used for switching from communication to sensing. Therefore, a CP for symbol #0#1 can be added after gap#3, aligning the DFT window positions of the transmitting and receiving ends of symbol #0#1. gap#4 can be used for switching within sensing. Therefore, a CP for symbol #0#2 can be added after gap#4, aligning the DFT window positions of the transmitting and receiving ends of symbol #0#2. gap#5 can be used for switching from sensing to communication. Since there is no sensing signal transmission after gap#5, no CP needs to be placed after gap#5.

[0389] Optionally, when the dedicated resource contains multiple CPs (i.e., there are multiple switching gaps located before the sensing signal), the lengths of the multiple CPs can be different.

[0390] In this context, dedicated resources are better suited to the sensing scenario.

[0391] For example, since the multipath propagation characteristics of channels are different in different frequency bands (generally speaking, low-frequency channels have greater multipath delay spread than high-frequency channels), in order to combat multipath delay spread, the corresponding CP length can be increased in the low-frequency channel scenario.

[0392] For example, corresponding to (b) in Figure 11, if the channel frequency after the switch is lower than the channel frequency before the switch, the length of the CP with symbol #0#2 added after gap#4 can be greater than the length of the CP with symbol #0#1 added after gap#3.

[0393] For example, beamwidth also affects the multipath delay spread (generally, wide beam channels have a larger multipath delay spread than narrow beam channels). Therefore, when switching from a narrow beam to a wide beam, the corresponding CP length can be increased.

[0394] Alternatively, when the dedicated resources consist only of resources used for the actual transmission of the sensing signal (i.e., no CP-OFDM symbols) and gaps, for example, as shown in Figure 8(a) and Figure 8(b), the sum of the durations of all gaps is equal to an integer multiple of the length of the no-CP symbol (the length of the no-CP symbol is...). The length of each NR time unit.

[0395] Optionally, for the above situation, when all gap sizes are equal (the gap size is...), The length of each NR time unit, the number of gaps is If the sum of all gap durations is equal to an integer multiple of the length of the CP-less symbol, then the following formula can be satisfied:

[0396] Optionally, It can be paired.

[0397] For example, if the bandwidth of a sensing node's single-processing operation is limited, then when achieving large-bandwidth coverage based on frequency hopping or channel splicing, the number of frequency hopping or channel splicing operations is relatively large. Configure a larger value.

[0398] For example, using a narrow beam requires a larger configuration than using a wide beam. value.

[0399] Optionally, when the sum of all gap durations equals When the length of a non-CP-OFDM symbol is given, the number of non-CP-OFDM symbols within the dedicated resource is: That is, the number of CP-free OFDM symbols actually transmitted within the dedicated resources is

[0400] Alternatively, when the dedicated resources consist only of resources used for the actual transmission of the sensing signal (i.e., no CP-OFDM symbols), gaps, and CPs, for example, as shown in Figure 11(a) and Figure 11(b), the sum of the durations of all gaps and CPs is equal to an integer multiple of the length of the no-CP symbol (the length of the no-CP symbol is...). The length of each NR time unit.

[0401] Optionally, when the sum of all gap and CP durations equals When the length of a non-CP-OFDM symbol is given, the number of non-CP-OFDM symbols within the dedicated resource is: That is, the number of CP-OFDM symbols actually transmitted within the dedicated resources is

[0402] Method 3:

[0403] When the dedicated resources contain time-domain resource #1 (time-domain resource #1 is used to carry sensing signals, and time-domain resource #1 is the resource corresponding to at least one consecutive CP-OFDM symbol, and symbol #0 is the first CP-OFDM symbol in time-domain resource #1) and remaining resources (the time length of the remaining resources) When ), the remaining resources can be used to place the CP of symbol #0.

[0404] Optionally, the remaining resources can also be used for switching from communication to sensing; and / or for switching from sensing to communication; and / or for switching within sensing.

[0405] Alternatively, the remaining resources can also be used to carry the CP between the gap and time-domain resource #1.

[0406] Optionally, the sum of the durations of all switching gaps and CPs (if CP exists) within the dedicated resource is equal to The length of each NR time unit, and the number of CP-OFDM symbols actually transmitted within the dedicated resource are:

[0407] Optionally, the sum of the durations of all switching gaps and CPs (if CP exists) within the dedicated resource is: That is, except In addition, dedicated resources were also allocated The time resource of the length of the CP-OFDM symbol without CP is placed in the gap and / or CP, at which point the actual number of CP-OFDM symbols without CP transmitted within the dedicated resource is:

[0408] It should be noted that, for ease of understanding, this application only uses symbol-level dedicated resources as an example (a time slot contains a fixed number of CP-OFDM symbols, and the slot-level method can be converted into the symbol-level method), and does not constitute a limitation on the dedicated resource type applicable to pulse radar in the embodiments of this application.

[0409] Figure 12 is a schematic diagram of a communication method 1200 applicable to an embodiment of this application.

[0410] It should be understood that the embodiments shown below do not particularly limit the specific structure of the execution subject of the method provided in the embodiments of this application. As long as it is possible to communicate according to the method provided in the embodiments of this application by running a program that records the code of the method provided in the embodiments of this application, for example, the execution subject of the method provided in the embodiments of this application can be a sensing node or a transmitting node; or it can be a network device or a terminal device, etc. (the function of the sensing node or transmitting node can be implemented by the network device or terminal device) and a network entity (for example, it can be a sensing management function (SMF) network element); or it can be a functional module in the sensing node and the network entity that can call and execute the program.

[0411] Without loss of generality, the communication method provided in the embodiments of this application will be described in detail using the interaction between sensing nodes and network entities as an example.

[0412] It should be understood that Figure 12 illustrates the steps or operations of the communication method, but these steps or operations are merely examples. Other operations or variations of the operations shown in Figure 12 may also be performed in the embodiments of this application.

[0413] Method 1200 may include the following steps:

[0414] S1201: The sensing node sends the second information to the network entity; correspondingly, the network entity receives the second information from the sensing node.

[0415] It should be noted that the second information can also be called the capability information of the sensing node. This application embodiment only describes the function of the second information and does not limit the name of the first information.

[0416] The second piece of information may include one or more of the following:

[0417] (1) The time delay required for the sensing node to switch, i.e. the time information required for the switch.

[0418] The switching includes one or more of the following: switching from sensing to communication or from communication to sensing (e.g., switching between sensing and communication frequencies, antenna or beam switching); switching within sensing (e.g., subband or CC switching involved in frequency hopping or signal splicing processing during sensing; antenna or beam switching involved in beam scanning during sensing).

[0419] (2) The maximum bandwidth that can be processed in a single frequency hopping transmission or channel splicing transmission, that is, the maximum channel bandwidth supported by the sensing node under a given set of parameters.

[0420] (3) In beam scanning, the typical number of beams or beam width, etc.

[0421] S1102: The network entity sends the first information to the sensing node; correspondingly, the sensing node receives the first information from the network entity.

[0422] The first information is determined based on the second information.

[0423] Optionally, the first information is determined based on the second information, and further includes: the first information is determined based on the first information and other prior information about the perceived target object (e.g., the distance or position range and / or angle range of the target object or the area where the target object is located, the velocity range and / or acceleration range of the target object, etc.).

[0424] The first information may include information about a first resource (corresponding to the first resource or a dedicated resource in the method embodiments above), thereby the first information can be used to determine the time domain range and / or frequency domain range of the first resource.

[0425] Optionally, the information of the first resource includes one or more of the following: the time domain start position of the first resource, the time domain end position of the first resource, the frequency domain start position of the first resource, the frequency domain end position of the first resource, the duration of the first resource, or the frequency domain bandwidth of the first resource, etc.

[0426] It is understandable that the information of the first resource can be used to determine the time domain range of the first resource.

[0427] For example, the information of the first resource may include the time domain start position and the time domain end position of the first resource, thereby directly determining the time domain range of the first resource.

[0428] For example, the information of the first resource may include the time domain start position of the first resource and the duration of the first resource, such that the start time of the first resource is the time corresponding to the time domain start position of the first resource, and the end time of the first resource is the time corresponding to the start time of the first resource after the duration of the first resource.

[0429] For example, the information of the first resource may include the time domain termination position of the first resource and the duration of the first resource, so that the termination time of the first resource is the time corresponding to the time domain termination position of the first resource, and the start time of the first resource is the time corresponding to the duration of the first resource preceding the termination time of the first resource.

[0430] For example, the information of the first resource may include any one of the time-domain start position, the time-domain end position, or the duration of the first resource. For instance, the information of the first resource may include the time-domain start position, while the time-domain end position and / or the duration of the first resource can be determined by predefinition or other means (e.g., the duration of the first resource can be a duration defined by a protocol; or, the time-domain end position and / or the duration of the first resource can be determined by the sensing node itself and indicated to the network entity, so that the first information sent by the network entity does not need to carry the time-domain end position and / or the duration of the first resource); or, the time-domain end position and / or the duration of the first resource can be indicated by other nodes (e.g., the network entity can send the time-domain end position and / or the duration of the first resource to a second node, and the second node then sends the time-domain end position and / or the duration of the first resource to the sensing node). For example, the information of the first resource may include the time-domain termination position of the first resource, while the time-domain start position of the first resource can be determined based on the end time of the last resource used for communication by the sensing node before sensing begins. The duration of the first resource can be determined through predefinition or other methods. Again, for example, the information of the first resource may include the duration of the first resource, while the time-domain start position of the first resource can be determined based on the end time of the last resource used for communication by the sensing node before sensing begins.

[0431] Understandably, information about the first resource can also be used to determine the frequency domain range of the first resource.

[0432] For example, the information of the first resource may include the frequency domain start position and the frequency domain end position of the first resource, thereby directly determining the frequency domain range of the first resource.

[0433] For example, the information of the first resource may include the frequency domain start position of the first resource and the frequency domain bandwidth of the first resource, so that the start frequency of the first resource is the frequency corresponding to the frequency domain start position of the first resource, and the end frequency of the first resource is the frequency corresponding to the sum of the start frequency of the first resource and the frequency domain bandwidth of the first resource.

[0434] For example, the information of the first resource may include the frequency domain termination position of the first resource and the frequency domain bandwidth of the first resource, so that the termination frequency of the first resource is the frequency corresponding to the frequency domain termination position of the first resource, and the starting frequency of the first resource is the frequency corresponding to the difference between the termination frequency domain of the first resource and the frequency domain bandwidth of the first resource.

[0435] For example, the information of the first resource may include any one of the frequency domain start position, frequency domain end position, or frequency domain bandwidth of the first resource. For instance, the information of the first resource may include the frequency domain start position or the frequency domain end position of the first resource, while the frequency domain bandwidth of the first resource can be determined by predefinition or other means (e.g., the frequency domain bandwidth of the first resource can be a bandwidth defined by a protocol; or, the frequency domain bandwidth of the first resource can be determined by the sensing node itself and indicated to the network entity, so that the first information sent by the network entity does not need to carry the frequency domain bandwidth of the first resource); or, the frequency domain end position and / or the frequency domain bandwidth of the first resource can be indicated by other nodes (e.g., the network entity can send the frequency domain end position and / or the frequency domain bandwidth of the first resource to a second node, and the second node then sends the frequency domain end position and / or the frequency domain bandwidth of the first resource to the sensing node). For example, the information of the first resource may include the frequency domain bandwidth of the first resource, and the frequency domain start position or frequency domain end position of the first resource may be determined based on the frequency start position or end position of the last resource used for communication before the sensing node performs sensing.

[0436] For example, when the information of the first resource only includes time-domain related information of the first resource (e.g., the time-domain start position, the time-domain end position, and / or the duration of the first resource), the frequency-domain related information of the first resource (e.g., the frequency-domain start position, the frequency-domain end position, and / or the frequency-domain bandwidth of the first resource) can be determined by predefinition or other means (e.g., the frequency-domain related information of the first resource is a frequency band predefined by the protocol); or, the frequency-domain related information of the first resource can be indicated by other nodes (e.g., the network entity can send the frequency-domain related information of the first resource to the second node, and the second node can then send the frequency-domain related information of the first resource to the sensing node); or, the frequency-domain related information of the first resource can also be determined based on the frequency band of the last resource used for communication by the sensing node before sensing.

[0437] For example, when the information of the first resource only includes frequency domain-related information (e.g., the frequency domain start position, frequency domain end position, and / or frequency domain bandwidth of the first resource), the time domain-related information (e.g., the time domain start position, time domain end position, and / or duration of the first resource) can be determined by predefinition (e.g., the time domain-related information of the first resource is a predefined time period in the protocol); or, the time domain-related information of the first resource can be indicated by other nodes (e.g., the network entity can send the time domain-related information of the first resource to a second node, and the second node can then send the time domain-related information of the first resource to the sensing node). It should be noted that the above examples are merely illustrations. When the information of the first resource includes only part of the time domain-related information and / or the frequency domain-related information of the first resource, the time domain range and / or frequency domain range of the first resource can also be determined by other methods. This application embodiment does not limit the method by which the sensing node determines the time domain range and / or frequency domain range of the first resource based on the content of the first information.

[0438] Optionally, the first information may further include configuration information, which corresponds to the method by which the sensing node transmits sensing signals via RF (applicable to the content of Figures 5 to 10), and the configuration information includes one or more of the following:

[0439] a. Subcarrier spacing: SCS without CP-OFDM symbols (i.e., first time unit).

[0440] b. Signals carried by OFDM symbols.

[0441] c. Signals without CP-OFDM symbols.

[0442] d. The number of the second resources, the time-domain start position of the second resources, the frequency-domain start position of the second resources, the number of the third resources, the time-domain start position of the third resources, the frequency-domain start position of the third resources, the number of the fourth resources, the time-domain start position of the fourth resources, the frequency-domain start position of the fourth resources, or the number of the first time units included in each of the one or more second resources. For example, the location of each switching gap, the size of each switching gap, the length of the CP (if the CP exists), the interval between two adjacent gaps or the number of CP-free OFDM symbols contained between two adjacent gaps, the transmission bandwidth after a single switch, etc. The switching gap includes: a switching gap from communication to sensing, a switching gap from sensing to communication, or a switching gap within sensing. The size of each switching gap should not be lower than the reported value in the second information, and the transmission bandwidth after a single switch should not be higher than the bandwidth value reported in the second information.

[0443] To facilitate understanding of the above embodiments provided in this application, the following points are made.

[0444] (1) In this application, "instruction" can include direct instruction, indirect instruction, explicit instruction, and implicit instruction. When describing a certain instruction information to indicate A, it can be understood that the instruction information carries A, directly indicates A, or indirectly indicates A. In this application, the information indicated by the instruction information is called the information to be instructed. In the specific implementation process, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or the index of the information to be instructed. It is also possible to indirectly indicate the information to be instructed by indicating other information, wherein there is an association between the other information and the information to be instructed. It is also possible to indicate only a part of the information to be instructed, while the other parts of the information to be instructed are known or agreed in advance. For example, the instruction of specific information can also be achieved by using the arrangement order of various information agreed in advance (e.g., stipulated by a protocol), thereby reducing the instruction overhead to a certain extent. In addition, the information to be instructed can be sent as a whole or divided into multiple sub-information to be sent separately, and the sending period and / or sending time of these sub-information can be the same or different.

[0445] (2) In this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission via the air interface by other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY via the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0446] (3) In this application, unless otherwise specified or logically conflicting, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0447] (4) In this application, "first" and "second" are used for descriptive convenience only to distinguish objects and are not intended to limit the scope of the embodiments of this application. They are not used to describe the order or sequence of features. It should be understood that the objects described in this way can be interchanged where appropriate so as to describe solutions other than those in the embodiments of this application.

[0448] (5) In this application, “predefined” can be achieved by pre-storing the corresponding code, table or other means that can be used to indicate relevant information in the device. This application does not limit the specific implementation method.

[0449] (6) In this application, the “protocol” may refer to standard protocols in the field of communications, such as the Long Term Evolution (LTE) protocol, the New Radio (NR) protocol, and related protocols applied to future communication systems. This application does not limit the scope of the term.

[0450] (7) In this application, the words “exemplary,” “for example,” “exemplary,” “as another example,” etc., are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design that is described as an “exemplary” in this application should not be construed as being more preferred or advantageous than other embodiments or designs.

[0451] (8) In this application, “comprising,” “including,” “having,” and variations thereof mean “including but not limited to,” unless otherwise specifically emphasized. “At least one” means one or more, and “more” means two or more.

[0452] (9) In this application, "and / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b, and c. Where a, b, and c can be single or multiple.

[0453] (10) Some optional features in this application may not depend on other features in certain scenarios; they may also be combined with other features in certain scenarios without limitation.

[0454] (11) In this application, the descriptions such as “when…”, “under the circumstances of…”, “if” and “if” all refer to the device making corresponding processing under certain objective circumstances. They are not time limits, nor do they require the device to make a judgment action when it is implemented, nor do they mean that there are other limitations.

[0455] The methods of the embodiments of this application have been described in detail above with reference to Figures 5 to 12. In order to implement the functions of the methods provided in this application, both the transmitting device and the receiving device may include hardware structures and / or software modules, and the above functions may be implemented in the form of hardware structures, software modules, or hardware structures plus software modules. Whether a certain function is implemented in the form of hardware structures, software modules, or hardware structures plus software modules depends on the specific application and design constraints of the technical solution.

[0456] The communication device of the present application embodiment is described below with reference to Figures 13 to 15.

[0457] Figure 13 is a schematic diagram of the structure of a communication device 1300 provided in an embodiment of this application.

[0458] The device 1300 includes a transceiver unit 1310 and a processing unit 1320. The transceiver unit 1310 can communicate with the outside world, and the processing unit 1320 is used for data processing. The transceiver unit 1310 can also be referred to as a communication interface or a communication unit.

[0459] Optionally, the transceiver unit 1310 may also be referred to as a communication interface or communication unit, including a transmitting unit and / or a receiving unit. The transceiver unit 1310 may be a transceiver (including a transmitter and / or receiver), an input / output interface (including input and / or output interfaces), or pins or circuits, etc. The transceiver unit 1310 can be used to perform the transmitting and / or receiving steps in the above method embodiments.

[0460] Optionally, the processing unit 1320 may be a processor (which may include one or more) or a processing circuit with processor functions, and may be used to perform other steps in the above method embodiments besides sending and receiving.

[0461] Optionally, the device 1300 further includes a storage unit, which may be a memory, an internal storage unit (e.g., a register or cache), or an external storage unit (e.g., a read-only memory or a random access memory). The storage unit stores instructions, and the processing unit 1320 executes the instructions stored in the storage unit to cause the communication device to perform the aforementioned method.

[0462] In addition, the transceiver unit 1310 may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit 1320 may be a processing circuit.

[0463] It should be noted that the device in Figure 13 can also be a chip or a chip system, such as a system on a chip (SoC). The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip. This application does not impose any limitations on this.

[0464] The device 1300 can be used to perform the actions performed by the sensing node (or the first device) in the above method embodiments. In this case, the device 1300 can be the sensing node (or the first device) or a component that can be configured on the sensing node (or the first device).

[0465] The transceiver unit 1310 is used to perform transceiver-related operations on the sensing node (or first device) side in the above method embodiment, for example, to send sensing signals.

[0466] The processing unit 1320 is used to perform processing-related operations on the sensing node (or first device) side in the above method embodiment, for example, to acquire a sensing signal, the sensing signal being used to sense a target object, the sensing signal being carried on a first resource; wherein, the time domain resources of the first resource are in the form of orthogonal frequency division multiplexing OFDM symbols, time slots, half-frames, subframes, frames, or preset time as granularity.

[0467] Optionally, the processing unit 1320 is further configured to acquire first information, the first information including information and / or configuration information of the first resource, the first information being determined based on one or more of the following: time information required for switching, maximum channel bandwidth supported by the first device under a given set of parameters, beamwidth, or information of the target object.

[0468] Optionally, the sensing signal is carried on one or more second resources, and the first resource includes the one or more second resources; wherein, at least one of the one or more second resources includes M consecutive first time units, where M is a positive integer, and any two first time units carry the same signal, and the M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

[0469] Optionally, the length of the temporal domain resource of the first resource is granular with time slots, including: the first resource includes A series of consecutive time slots; wherein, Greater than or equal to 2, The time slot is an integer, and the time length of the time slot is determined according to the parameter set μ0, where μ0 is an integer.

[0470] Optionally, the length of the time-domain resource of the first resource is in OFDM symbol granularity, including: the first resource includes A series of consecutive OFDM symbols; wherein, Greater than or equal to 2, The time length of the OFDM symbol is determined according to the parameter set μ0, where μ0 is an integer.

[0471] Optionally, μ0 is less than or equal to μ, where μ is a set of parameters corresponding to any of the first time units.

[0472] Optionally, when the length of the time-domain resource of the first resource is granular with a preset time, μ is greater than or equal to 2, where μ is a parameter set corresponding to any first time unit.

[0473] Optionally, when the sensing signal is carried on multiple second resources, any two of the multiple second resources may have different sizes; or, any two of the multiple second resources may have the same size; or, some of the multiple second resources may have the same size; or, any two of the multiple second resources may include different numbers of first time units; or, any two of the multiple second resources may include the same number of first time units; or, some of the multiple second resources may include the same number of first time units.

[0474] Optionally, the first resource further includes a third resource; the third resource is used for switching from communication to sensing; and / or, the third resource is used for switching from sensing to communication; and / or, the third resource is used for switching within sensing.

[0475] Optionally, if the second resource is located after the third resource, the first resource further includes a fourth resource; the fourth resource is located between the first time unit of the third resource and the second resource; the fourth resource is used to carry the CP of the sensing signal.

[0476] Optionally, if the second resource and the first resource have the same time-domain start position, the last OFDM symbol preceding the second resource has a zero-tail or low-power tail signal.

[0477] Optionally, the first resource may be used solely for sensing.

[0478] Alternatively, the device 1300 can be used to perform the actions performed by the sensing node (or the first device) in the above method embodiments. In this case, the device 1300 can be the sensing node (or the first device) or a component that can be configured on the sensing node (or the first device).

[0479] The transceiver unit 1310 is used to perform transceiver-related operations on the sensing node (or first device) side in the above method embodiment, for example, to send a sensing signal. The processing unit 1320 is used to perform processing-related operations on the sensing node (or first device) side in the above method embodiment, for example, to acquire a sensing signal used to sense a target object, the sensing signal being carried on one or more second resources, at least one of the one or more second resources including M consecutive first time units, where M is a positive integer, any two first time units in the M consecutive first time units carry the same signal, and the M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

[0480] Optionally, the processing unit 1320 is further configured to acquire first information, the first information including information and / or configuration information of the first resource, the first information being determined based on one or more of the following: time information required for switching, maximum channel bandwidth supported by the first device under a given set of parameters, beamwidth, or information of the target object.

[0481] Alternatively, the device 1300 can be used to perform the actions performed by the network entity (or the first entity) in the above method embodiments. In this case, the device 1300 can be the network entity (or the first entity) or a component that can be configured in the network entity (or the first entity).

[0482] The transceiver unit 1310 is used to perform transceiver-related operations on the network entity (or first entity) side in the above method embodiment, for example, to send first information, the first information including information about a first resource, the information about the first resource including any one or more of the following: the time domain start position of the first resource, the time domain end position of the first resource, the frequency domain start position of the first resource, the frequency domain end position of the first resource, the duration of the first resource, or the frequency domain bandwidth of the first resource; wherein, the first resource is used to carry sensing signals; wherein, the time domain resources of the first resource are granular in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

[0483] The processing unit 1320 is used to perform processing-related operations on the network entity (or first entity) side in the above method embodiment, for example, to determine first information.

[0484] It should be understood that the device 1300 here is embodied in the form of a functional unit. The term "unit" here may refer to application-specific integrated circuits (ASICs), electronic circuits, processors (e.g., shared processors, proprietary processors, or group processors) and memories for executing one or more software or firmware programs, combined logic circuits, and / or other suitable components that support the described functions.

[0485] The apparatus 1300 of each of the above-described schemes has the function of implementing the corresponding steps performed by the communication device (such as a sensing node (or the first device), or a network entity (or the first entity)) in the above-described methods. The function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (e.g., the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as processing units, can be replaced by processors, respectively executing the transceiver operations and related processing operations in each method embodiment.

[0486] Figure 14 is a schematic diagram of the structure of a communication device 1400 provided in an embodiment of this application.

[0487] As shown in Figure 14, the device 1400 includes a processor 1410 and a transceiver 1420. The processor 1410 and the transceiver 1420 communicate with each other through an internal connection path. The processor 1410 is used to execute instructions to control the transceiver 1420 to send and / or receive signals.

[0488] Optionally, the device 1400 may further include a memory 1430, which communicates with the processor 1410 and the transceiver 1420 via internal interconnection paths. The memory 1430 is used to store instructions, and the processor 1410 can execute the instructions stored in the memory 1430.

[0489] In one possible implementation, the device 1400 is used to implement the various processes and steps corresponding to the sensing node (or the first device) in the above method embodiments.

[0490] It should be understood that the device 1400 may specifically be a sensing node (or the first device) in the above embodiments, or it may be a chip or a chip system. Correspondingly, the transceiver 1420 may be the transceiver circuit of the chip, which is not limited here. For example, the device 1400 may be used to execute the various steps and / or processes corresponding to the sensing node (or the first device) in the above method embodiments.

[0491] In one possible implementation, the device 1400 is used to implement the various processes and steps corresponding to the network entity (or the first entity) in the above method embodiments.

[0492] It should be understood that the device 1400 may specifically be the network entity (or the first entity) in the above embodiments, or it may be a chip or a chip system. Correspondingly, the transceiver 1420 may be the transceiver circuit of the chip, which is not limited here. For example, the device 1400 may be used to execute the various steps and / or processes corresponding to the network entity (or the first entity) in the above method embodiments.

[0493] Optionally, the memory 1430 may include read-only memory and random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 1410 may be used to execute instructions stored in the memory, and when the processor 1410 executes instructions stored in the memory, the processor 1410 is used to perform the various steps and / or processes of the method embodiments corresponding to the sensing node (or the first device) described above.

[0494] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0495] It should be noted that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by the integrated logic circuits in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The processor in the embodiments of this application can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above methods.

[0496] It is understood that the memory in the embodiments of this application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM), which serves as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced synchronous dynamic random access memory, synchronous linked dynamic random access memory, and direct memory bus random access memory. It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0497] Figure 15 is a schematic diagram of the structure of a chip system 1500 provided in an embodiment of this application.

[0498] As shown in Figure 15, the chip system 1500 (or processing system) includes logic circuits 1510 and input / output interface 1520.

[0499] The logic circuit 1510 can be a processing circuit in the chip system 1500. The logic circuit 1510 can be coupled to the storage unit, calling instructions in the storage unit, enabling the chip system 1500 to implement the methods and functions of the embodiments of this application. The input / output interface 1520 can be an input / output circuit in the chip system 1500, outputting processed information from the chip system 1500, or inputting data or signaling information to be processed into the chip system 1500 for processing.

[0500] As one approach, the chip system 1500 is used to implement the operations performed by the terminal device in the various method embodiments described above.

[0501] This application also provides a computer-readable medium having a computer program stored thereon, which, when executed by a computer, implements the functions of any of the above method embodiments.

[0502] This application also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0503] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. 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. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0504] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art 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.

[0505] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0506] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0507] The units described as separate components may or may not be physically separate. 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0508] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0509] If the aforementioned functions are implemented as 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 this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A communication method, said method being applied to a first device, characterized in that, include: Acquire a sensing signal, which is used to sense a target object. The sensing signal is carried on a first resource. The time-domain resources of the first resource are in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

2. The method according to claim 1, characterized in that, The sensing signal is carried on a first resource, including: The sensing signal is carried on one or more second resources, and the first resource includes the one or more second resources; Wherein, at least one of the one or more second resources includes M consecutive first time units, where M is a positive integer, and any two first time units carry the same signal, and the M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

3. The method according to claim 1 or 2, characterized in that, When the sensing signal is carried on multiple second resources, any two of the multiple second resources are of different sizes; or, any two of the multiple second resources are of the same size; or, some of the multiple second resources are of the same size; or, any two of the multiple second resources include different numbers of first time units; or, any two of the multiple second resources include the same number of first time units; or, some of the multiple second resources include the same number of first time units.

4. The method according to any one of claims 1 to 3, characterized in that, The length of the temporal domain resource of the first resource is granular in terms of time slots, including: the first resource includes A consecutive time slot; in, Greater than or equal to 2, The time slot length is determined based on the parameter set μ0, where μ0 is an integer.

5. The method according to any one of claims 1 to 3, characterized in that, The length of the time-domain resource of the first resource is measured in OFDM symbols, and includes: The first resource includes A series of OFDM symbols; in, Greater than or equal to 2, The length of the OFDM symbol is determined according to the parameter set μ0, where μ0 is an integer.

6. The method according to claim 4 or 5, characterized in that, μ0 is less than or equal to μ, where μ is the set of parameters corresponding to any of the first time units.

7. The method according to any one of claims 1 to 3, characterized in that, When the length of the time-domain resource of the first resource is granular with a preset time, μ is greater than or equal to 2, where μ is a parameter set corresponding to any first time unit.

8. The method according to any one of claims 1 to 7, characterized in that, The first resource also includes a third resource; The third resource is used for switching from communication to sensing; and / or, The third resource is used for switching of sensing communication; and / or, The third resource is used for switching within the perception system.

9. The method according to claim 8, characterized in that, If the second resource is located after the third resource, the first resource further includes a fourth resource; The fourth resource is located between the first time unit of the third resource and the first second resource; The fourth resource is used to carry the CP of the sensing signal.

10. The method according to any one of claims 1 to 9, characterized in that, When the second resource and the first resource have the same time-domain start position, the last OFDM symbol preceding the second resource has a zero-tail or low-power tail signal.

11. The method according to any one of claims 1 to 10, characterized in that, The first resource is used only for perception.

12. The method according to any one of claims 1 to 11, characterized in that, Prior to acquiring the sensing signal, the method further includes: Obtain first information, the first information including information about the first resource, the information about the first resource including any one or more of the following: The time-domain start position of the first resource, the time-domain end position of the first resource, the frequency-domain start position of the first resource, the frequency-domain end position of the first resource, the duration of the first resource, or the frequency-domain bandwidth of the first resource.

13. The method according to claim 12, characterized in that, The first information is determined based on one or more of the following: The switching time information, the maximum channel bandwidth supported by the first device under the given parameter set, the beamwidth, or the information of the target object.

14. The method according to claim 12 or 13, characterized in that, The first information also includes configuration information, which includes one or more of the following: The subcarrier spacing of the first time unit, the signal carried by the first time unit, the number of second resources, the time-domain start position of the second resource, the frequency-domain start position of the second resource, the number of third resources, the time-domain start position of the third resource, the frequency-domain start position of the third resource, the number of fourth resources, the time-domain start position of the fourth resource, the frequency-domain start position of the fourth resource, or the number of first time units included in each of the one or more second resources.

15. The method according to any one of claims 1 to 14, characterized in that, The time length of each first time unit is:

16. A communication method, said method being applied to a first entity, characterized in that, include: Send first information, the first information including information about a first resource, the information about the first resource including any one or more of the following: the time domain start position of the first resource, the time domain end position of the first resource, the frequency domain start position of the first resource, the frequency domain end position of the first resource, the duration of the first resource, or the frequency domain bandwidth of the first resource. The first resource is used to carry sensing signals; the time domain resources of the first resource are in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

17. The method according to claim 16, characterized in that, The first information is determined based on any one or more of the following: The switching requires time information, the maximum channel bandwidth supported by the first device under a given parameter set, beamwidth, or information about the target object; wherein, the sensing signal is used to sense the target object.

18. The method according to claim 16 or 17, characterized in that, The first information also includes configuration information, which includes one or more of the following: The subcarrier spacing of the first time unit, the signal carried by the first time unit, the number of second resources, the time-domain start position of the second resource, the frequency-domain start position of the second resource, the number of third resources, the time-domain start position of the third resource, the frequency-domain start position of the third resource, the number of fourth resources, the time-domain start position of the fourth resource, the frequency-domain start position of the fourth resource, or the number of first time units included in each of the one or more second resources.

19. The method according to any one of claims 16 to 18, characterized in that, The sensing signal is carried on one or more second resources, and the first resource includes the one or more second resources; Wherein, at least one of the one or more second resources includes M consecutive first time units, where M is a positive integer, and any two first time units carry the same signal, and the M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

20. The method according to any one of claims 16 to 19, characterized in that, When the sensing signal is carried on multiple second resources, any two of the multiple second resources are of different sizes; or, any two of the multiple second resources are of the same size; or, some of the multiple second resources are of the same size; or, any two of the multiple second resources include different numbers of first time units; or, any two of the multiple second resources include the same number of first time units; or, some of the multiple second resources include the same number of first time units.

21. The method according to any one of claims 16 to 20, characterized in that, The length of the temporal domain resource of the first resource is granular in terms of time slots, including: the first resource includes A consecutive time slot; in, Greater than or equal to 2, The time slot length is determined based on the parameter set μ0, where μ0 is an integer.

22. The method according to any one of claims 16 to 20, characterized in that, The length of the time-domain resource of the first resource is measured in OFDM symbols, and includes: The first resource includes A series of OFDM symbols; in, Greater than or equal to 2, The length of the OFDM symbol is determined according to the parameter set μ0, where μ0 is an integer.

23. The method according to claim 21 or 22, characterized in that, μ0 is less than or equal to μ, where μ is the set of parameters corresponding to any of the first time units.

24. The method according to any one of claims 16 to 20, characterized in that, When the length of the time-domain resource of the first resource is granular with a preset time, μ is greater than or equal to 2, where μ is a parameter set corresponding to any first time unit.

25. The method according to any one of claims 16 to 24, characterized in that, The first resource also includes a third resource; The third resource is used for switching from communication to sensing; and / or, The third resource is used for switching of sensing communication; and / or, The third resource is used for switching within the perception system.

26. The method according to claim 25, characterized in that, If the second resource is located after the third resource, the first resource further includes a fourth resource; The fourth resource is located between the first time unit of the third resource and the first second resource; The fourth resource is used to carry the CP of the sensing signal.

27. The method according to any one of claims 16 to 26, characterized in that, When the second resource and the first resource have the same time-domain start position, the last OFDM symbol preceding the second resource has a zero-tail or low-power tail signal.

28. The method according to any one of claims 16 to 27, characterized in that, The first resource is used only for perception.

29. The method according to any one of claims 16 to 28, characterized in that, The time length of each first time unit is:

30. A communication method applied to a first device, characterized in that, include: Acquire a sensing signal, which is used to sense a target object. The sensing signal is carried on one or more second resources. One of the one or more second resources includes M consecutive first time units, where M is a positive integer. In the M consecutive first time units, any two first time units carry the same signal. The M consecutive first time units do not carry the cyclic prefix CP of the sensing signal.

31. The method according to claim 30, characterized in that, The first resource includes one or more second resources, wherein the time-domain resources of the first resource are granular in the form of orthogonal frequency division multiplexing (OFDM) symbols, time slots, half-frames, subframes, frames, or preset times.

32. A communication device, characterized in that, Includes a processor for executing a computer program or instructions such that the method of any one of claims 1 to 15 is performed, or the method of any one of claims 16 to 29 is performed, or the method of claim 30 or 31 is performed.

33. The apparatus as claimed in claim 32, characterized in that, The device further includes a memory that stores the computer program or instructions.

34. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions, and when the computer program or instructions are run on a computer, the method as described in any one of claims 1 to 31 is performed.

35. A computer program product, characterized in that, When the computer program product is run on a computer, the method as described in any one of claims 1 to 31 is performed.

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