Method for adjusting transmission power of sensing signal, base station and user terminal device

Abstract

The application provides a sensing signal transmission power adjustment method, a base station and a user terminal device. The sensing signal transmission power adjustment method comprises the following steps: the base station acquires a first distance between the base station and the user terminal device and a communication path loss estimation value; the base station receives a reference signal receiving power reported by the user terminal device, and determines a communication path loss actual value between the base station and the user terminal device according to the reference signal receiving power and a communication signal transmission power of the base station; the base station acquires a path loss deviation of the communication path loss estimation value and the communication path loss actual value; the base station determines a sensing path loss estimation value between the base station and a sensing target according to the first distance and sensing information reported by the user terminal device, wherein the sensing information is determined by the user terminal device sensing the sensing target; the base station determines a sensing path loss actual value between the base station and the sensing target according to the sensing path loss estimation value and the path loss deviation; and the base station adjusts a sensing signal transmission power according to the sensing path loss actual value.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a method for adjusting the transmission power of a sensing signal, a base station, and a user terminal device. Background Technology

[0002] Communication-sensing integration technology combines communication systems with sensing systems, thereby enabling existing communication systems to possess sensing capabilities. In some scenarios, base stations can sense passive target objects at different locations within their coverage area, thereby obtaining sensing information such as distance, speed, and direction of the target objects.

[0003] In the current sensing process, base stations use a fixed power allocation method to sense passive target objects. However, target objects with different locations and different effective cross-sectional areas have different reflection losses of sensing signals. Therefore, it is difficult to guarantee the detection capability of target objects by using a fixed power allocation method. Summary of the Invention

[0004] This invention provides a method for adjusting the transmission power of a sensing signal, a base station, and a user terminal device, which solves the problem that when a base station uses a fixed power allocation method to sense passive target objects, it is difficult to guarantee the detection capability of the target object.

[0005] To solve the above-mentioned technical problems, the present invention is implemented as follows:

[0006] In a first aspect, embodiments of the present invention provide a method for adjusting the transmission power of a sensing signal, comprising:

[0007] The base station obtains the first distance and estimated communication path loss between the base station and the user terminal equipment;

[0008] The base station receives the reference signal reception power reported by the user terminal device, and determines the actual value of the communication path loss between the base station and the user terminal device based on the reference signal reception power and the communication signal transmission power of the base station.

[0009] The base station obtains the path loss deviation between the estimated value of the communication path loss and the actual value of the communication path loss;

[0010] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance and the sensing information reported by the user terminal device, wherein the sensing information is determined by the user terminal device sensing the sensing target;

[0011] The base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss value and the path loss deviation.

[0012] The base station adjusts the transmission power of the sensing signal based on the actual value of the sensing path loss.

[0013] Optionally, the base station obtains the estimated communication path loss between the base station and the user terminal equipment by including:

[0014] The base station receives the estimated communication path loss value sent by the user terminal equipment;

[0015] or

[0016] The base station determines the estimated communication path loss value based on the first distance.

[0017] Optionally, the base station determines the estimated communication path loss based on the first distance by including:

[0018] The base station calculates the estimated communication path loss based on the following formula:

[0019]

[0020] or

[0021]

[0022] or

[0023]

[0024] in, R1 is the estimated value of the communication path loss, λ is the wavelength of the carrier, f is the frequency of the carrier, and β1 is the spatial loss intercept, which is a constant.

[0025] Optionally, the perceived information includes:

[0026] The return loss between the user terminal device and the sensing target;

[0027] as well as,

[0028] The echo delay between the user terminal device and the sensing target or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance;

[0029] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0030] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss.

[0031] Optionally, the base station determines an estimated sensing path loss between itself and the sensing target based on the first distance, the second distance, and the return loss, including:

[0032] The base station calculates the estimated sensing path loss based on the following formula:

[0033]

[0034] in, PL is the estimated value of the sensing path loss. ra R1 is the return loss, R2 is the first distance, and R2 is the second distance.

[0035] Optionally, the perceived information includes:

[0036] The return loss scaling factor between the user terminal device and the sensing target;

[0037] as well as,

[0038] The echo delay between the user terminal device and the sensing target or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance;

[0039] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0040] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss scaling factor.

[0041] Optionally, the base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss scaling factor, including:

[0042] The base station calculates the estimated sensing path loss based on the following formula:

[0043]

[0044] in, α is the estimated value of the sensing path loss. r R1 is the return loss scaling factor, R2 is the first distance, and R2 is the second distance.

[0045] Optionally, the sensing information includes: the return loss between the user terminal device and the sensing target;

[0046] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0047] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance and the return loss.

[0048] Optionally, the base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the return loss, including:

[0049] The base station calculates the estimated sensing path loss based on the following formula:

[0050]

[0051] in, PL is the estimated value of the sensing path loss. ra R1 represents the return loss, and R1 represents the first distance.

[0052] Optionally, the base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss and the path loss deviation, including:

[0053] The base station calculates the actual value of the sensing path loss between the base station and the sensing target using the following formula:

[0054]

[0055] Among them, PL rb This represents the actual value of the sensing path loss. ΔPL is the estimated value of the sensing path loss, and ΔPL is the path loss deviation.

[0056] Optionally, the base station adjusts the transmission power of the sensing signal based on the actual value of the sensing path loss, including:

[0057] The base station determines the required sensing signal transmission power based on the actual value of the sensing path loss.

[0058] If the required sensing signal transmission power is less than the maximum sensing signal transmission power of the base station, the base station adjusts the sensing signal transmission power by changing the transmission bandwidth of the sensing signal, or by changing the power density of the bandwidth occupied by the sensing channel.

[0059] If the required sensing signal transmission power is greater than the maximum sensing signal transmission power of the base station, the base station adjusts the sensing signal transmission power by changing the sensing signal transmission period.

[0060] Optionally, if the base station adjusts the transmission power of the sensing signal by changing the transmission period of the sensing signal, the method further includes:

[0061] The base station sends the modified sensing signal transmission period to the terminal.

[0062] Secondly, embodiments of the present invention provide a method for adjusting the transmission power of a sensing signal, comprising:

[0063] The user terminal equipment obtains the first distance between itself and the base station and reports it to the base station;

[0064] The user terminal equipment reports the reference signal received power to the base station;

[0065] The user terminal device sends a sensing signal and determines sensing information based on the echo signal reflected by the sensing target.

[0066] The user terminal device reports the sensing information to the base station.

[0067] Optionally, the method further includes:

[0068] The user terminal device determines the estimated value of the communication path loss based on the first distance;

[0069] The user terminal equipment reports the estimated communication path loss value to the base station.

[0070] Optionally, the user terminal equipment determines the estimated communication path loss based on the first distance by including:

[0071] The user terminal device calculates the estimated communication path loss based on the following formula:

[0072]

[0073] or

[0074]

[0075] or

[0076]

[0077] in, R1 is the estimated value of the communication path loss, λ is the wavelength of the carrier, f is the frequency of the carrier, and β1 is the spatial loss intercept, which is a constant.

[0078] Optionally, the perceived information includes:

[0079] The user terminal equipment determines the return loss based on the echo signal;

[0080] as well as,

[0081] The user terminal device determines the echo delay based on the echo signal or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance.

[0082] Optionally, the perceived information includes:

[0083] The user terminal equipment determines the return loss scaling factor based on the echo signal;

[0084] as well as,

[0085] The user terminal device determines the echo delay based on the echo signal or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance.

[0086] Optionally, the sensing information includes: the return loss determined by the user terminal device based on the echo signal.

[0087] Thirdly, embodiments of the present invention provide a base station, comprising:

[0088] The first acquisition module is used to acquire the first distance and estimated communication path loss between the base station and the user terminal equipment;

[0089] The first receiving module is used to receive the reference signal receiving power reported by the user terminal device, and determine the actual value of the communication path loss between the base station and the user terminal device based on the reference signal receiving power and the communication signal transmitting power of the base station.

[0090] The second acquisition module is used to acquire the path loss deviation between the estimated value of the communication path loss and the actual value of the communication path loss.

[0091] The first determining module is used to determine the estimated value of the sensing path loss between the base station and the sensing target based on the first distance and the sensing information reported by the user terminal device, wherein the sensing information is determined by the user terminal device sensing the sensing target.

[0092] The second determining module is used to determine the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss value and the path loss deviation.

[0093] The power adjustment module is used to adjust the transmission power of the sensing signal according to the actual value of the sensing path loss.

[0094] Fourthly, embodiments of the present invention provide a user terminal device, including:

[0095] The first reporting module is used to obtain the first distance between the base station and the user terminal equipment and report it to the base station;

[0096] The second reporting module is used to report the reference signal received power to the base station;

[0097] The sensing module is used to send sensing signals and determine sensing information based on the echo signals reflected by the sensing target to the sensing signals.

[0098] The third reporting module is used to report the sensing information to the base station.

[0099] Fifthly, embodiments of the present invention provide a base station, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the sensing signal transmission power adjustment method described in the first aspect.

[0100] In a sixth aspect, embodiments of the present invention provide a user terminal device, characterized in that it includes: a processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, it implements the steps of the sensing signal transmission power adjustment method described in the second aspect above.

[0101] In a seventh aspect, embodiments of the present invention provide a computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the sensing signal transmission power adjustment method described in the first aspect; or, when executed by a processor, the computer program implements the steps of the sensing signal transmission power adjustment method described in the second aspect.

[0102] In this embodiment of the invention, by utilizing the sensing information obtained by the user terminal device from sensing the target object, the base station can provide different sensing signal transmission power for different target objects, thereby ensuring the base station's detection capability for the target object. Attached Figure Description

[0103] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0104] Figure 1 This is a schematic diagram illustrating the overall design principle of an embodiment of the present invention;

[0105] Figure 2 This is one of the schematic diagrams illustrating the relationship between path loss and distance in various embodiments of the present invention;

[0106] Figure 3 This is one of the flowcharts illustrating the sensing signal transmission power adjustment method according to an embodiment of the present invention;

[0107] Figure 4 This is a second schematic flowchart of the sensing signal transmission power adjustment method according to an embodiment of the present invention;

[0108] Figure 5 This is the third flowchart illustrating the sensing signal transmission power adjustment method according to an embodiment of the present invention;

[0109] Figure 6 This is the fourth flowchart illustrating the sensing signal transmission power adjustment method according to an embodiment of the present invention;

[0110] Figure 7 This is the fifth flowchart illustrating the sensing signal transmission power adjustment method according to an embodiment of the present invention;

[0111] Figure 8 This is the second schematic diagram illustrating the relationship between path loss and distance in various embodiments of the present invention;

[0112] Figure 9 This is one of the structural schematic diagrams of a base station according to an embodiment of the present invention;

[0113] Figure 10 This is one of the structural schematic diagrams of a user terminal device according to an embodiment of the present invention;

[0114] Figure 11 This is a second schematic diagram of the base station structure according to an embodiment of the present invention;

[0115] Figure 12 This is a second schematic diagram of the structure of a user terminal device according to an embodiment of the present invention. Detailed Implementation

[0116] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0117] The purpose of this invention is to integrate communication and sensing capabilities. 1: By combining the positioning capability of the user terminal device in communication and the reference signal reception power reported by the user terminal device with the sensing information obtained by the user terminal device in sensing capabilities, the power transmitted by the base station when sensing objects is adjusted; 2: Utilizing the joint information between the active user terminal device and the base station, the sensing transmission power for passive objects is given. The overall scheme design principle is as follows: Figure 1 and Figure 2 As shown in the diagram. Here, R0 is the distance between the base station (BS) and the sensing target (e.g., a vehicle), τ0 is the echo delay between the base station and the sensing target, and PL0 is the actual value of the sensing path loss; R1 is the distance between the base station and the user terminal equipment (UE), τ1 is the echo delay between the base station and the user terminal equipment, PL1 is the actual value of the communication path loss, and ΔPL is the path loss deviation. Here, R2 is the estimated communication path loss; R2 is the distance between the sensing target and the user terminal equipment; τ2 is the echo delay between the sensing target and the user terminal equipment; PL2 is the actual sensing path loss between the user terminal equipment and the sensing target; and PL... ra The return loss is the signal loss between the user terminal equipment and the sensing target.

[0118] The following is a detailed description of the process of adjusting the transmission power of the sensing signal according to an embodiment of the present invention.

[0119] Please refer to Figure 3 , Figure 3 This is a flowchart illustrating a sensing signal transmission power adjustment method according to an embodiment of the present invention. The method includes:

[0120] Step 1: The base station obtains the first distance and estimated communication path loss between the base station and the user terminal equipment;

[0121] Step 2: The base station receives the reference signal received power reported by the user terminal device, and determines the actual value of the communication path loss between the base station and the user terminal device based on the reference signal received power and the communication signal transmitted power of the base station.

[0122] Step 3: The base station obtains the path loss deviation between the estimated communication path loss and the actual communication path loss;

[0123] Step 4: The base station determines the estimated value of the sensing path loss between the base station and the sensing target based on the first distance and the sensing information reported by the user terminal device, wherein the sensing information is determined by the user terminal device sensing the sensing target;

[0124] Step 5: The base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss value and the path loss deviation.

[0125] Step 6: The base station adjusts the transmission power of the sensing signal based on the actual value of the sensing path loss.

[0126] In this embodiment of the invention, by utilizing the sensing information obtained by the user terminal device from sensing the target object, the base station can provide different sensing signal transmission power for different target objects, thereby ensuring the base station's detection capability for the target object.

[0127] Please refer to Figure 4 In step 1 above, optionally, the first distance R1 between the base station and the user terminal equipment is determined by the user terminal equipment and sent to the base station.

[0128] In step 1 above, optionally, the communication path loss estimate... This distance can be obtained in one of two ways: In one way, the user terminal equipment determines and sends it to the base station. In the other way, the base station determines it based on the first distance (see...). Figure 4 That is, the base station obtaining the estimated communication path loss between the base station and the user terminal equipment includes: the base station receiving the estimated communication path loss sent by the user terminal equipment; or, the base station determining the estimated communication path loss based on the first distance. Optionally, the base station determining the estimated communication path loss based on the first distance includes:

[0129] The base station calculates the estimated communication path loss based on the following formula:

[0130]

[0131] or

[0132]

[0133] or

[0134]

[0135] in, R1 is the estimated value of the communication path loss, λ is the wavelength of the carrier, f is the frequency of the carrier, and β1 is the spatial loss intercept, which is a constant.

[0136] The formula described above for calculating the estimated communication path loss can be used to... Figure 2 Curve L1 in the diagram.

[0137] The formula used above to calculate the estimated communication path loss adopts the free space loss model. In other embodiments of the present invention, other empirical path loss models may also be used.

[0138] Please refer to Figure 5 In step 2 above, optionally, the reference signal received power reported by the terminal can be CSI-RSRP (Channel State Information Reference Signal Received Power), but other reference signal received power is also possible. Optionally, the actual value of the communication path loss PL1 between the base station and the user terminal equipment is equal to the base station's communication signal transmission power minus the reference signal received power (CSI-RSRP).

[0139] In step 3 above, optionally, the path loss deviation is equal to the difference between the estimated communication path loss and the actual communication path loss.

[0140] Please refer to Figure 6 In step 4 above, optionally, the sensing information reported by the terminal can be of different types. When different types of sensing information are received, the processing methods on the base station side are also different. The following example illustrates this.

[0141] Example 1

[0142] In a first embodiment of the present invention, the sensing information includes: the return loss between the user terminal device and the sensing target; and the return delay between the user terminal device and the sensing target, wherein the return delay is used to calculate a second distance between the user terminal device and the sensing target;

[0143] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0144] The base station calculates a second distance between the user terminal device and the sensed target based on the echo delay; wherein, the second distance... Wherein, τ2 is the echo delay.

[0145] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss.

[0146] Optionally, the base station determines an estimated sensing path loss between itself and the sensing target based on the first distance, the second distance, and the return loss, including:

[0147] The base station calculates the estimated sensing path loss based on the following formula:

[0148]

[0149] in, PL is the estimated value of the sensing path loss. ra R1 represents the return loss, R2 represents the first distance, and R2 represents the second distance.

[0150] In the first embodiment described above, the second distance between the user terminal device and the sensing target is calculated by the base station. Of course, in other embodiments, it can also be calculated by the user terminal device.

[0151] Example 2

[0152] In a second embodiment of the present invention, the sensing information includes: the return loss between the user terminal device and the sensing target; and the second distance between the user terminal device and the sensing target.

[0153] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0154] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss.

[0155] Optionally, the base station determines an estimated sensing path loss between itself and the sensing target based on the first distance, the second distance, and the return loss, including:

[0156] The base station calculates the estimated sensing path loss based on the following formula:

[0157]

[0158] in, PL is the estimated value of the sensing path loss. ra R1 represents the return loss, R2 represents the first distance, and R2 represents the second distance.

[0159] The derivation of the above formula is as follows:

[0160]

[0161] The formula above used to calculate the estimated value of sensing path loss can be used to... Figure 2 Curve L3 in the diagram.

[0162] Example 3

[0163] In a third embodiment of the present invention, the sensing information includes: a return loss ratio factor between the user terminal device and the sensing target; and an echo delay between the user terminal device and the sensing target, wherein the echo delay is used to calculate a second distance between the user terminal device and the sensing target.

[0164] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0165] The base station calculates a second distance between the user terminal device and the sensing target based on the echo delay;

[0166] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss scaling factor.

[0167] Optional, return loss scaling factor α r The following formula can be used for calculation:

[0168] 10log 10 α r =PL ra -20log 10 λ+30log 10 4π+40log 10 R2

[0169] Among them, PL ra The return loss is mentioned above.

[0170] The formula above for calculating the return loss scaling factor can be used to... Figure 2 Curve L2 in the diagram.

[0171] Optionally, the base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss scaling factor, including:

[0172] The base station calculates the estimated sensing path loss based on the following formula:

[0173]

[0174] in, α is the estimated value of the sensing path loss. r R1 is the return loss scaling factor, R2 is the first distance, and R2 is the second distance.

[0175] Example 4

[0176] In a fourth embodiment of the present invention, the sensing information includes: a return loss ratio factor between the user terminal device and the sensing target; and a second distance between the user terminal device and the sensing target.

[0177] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0178] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss scaling factor.

[0179] Optionally, the base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss scaling factor, including:

[0180] The base station calculates the estimated sensing path loss based on the following formula:

[0181]

[0182] in, α is the estimated value of the sensing path loss. r R1 is the return loss scaling factor, R2 is the first distance, and R2 is the second distance.

[0183] Example 5

[0184] In a fifth embodiment of the present invention, the sensing information includes: the return loss between the user terminal device and the sensing target;

[0185] The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including:

[0186] The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance and the return loss.

[0187] Optionally, the base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the return loss, including:

[0188] The base station calculates the estimated sensing path loss based on the following formula:

[0189]

[0190] in, PL is the estimated value of the sensing path loss.ra R1 represents the return loss, and R1 represents the first distance.

[0191] As can be seen from the calculation formula of the sensing path loss estimate in Example 5, unlike other examples, only PL is used when calculating the sensing path loss estimate. ra R1 is used, but R2 is not used. In this case, R2 is usually less than the set reference distance (e.g., 1m) and can be ignored.

[0192] In this embodiment, the user terminal device does not report the second distance directly. In other embodiments of the present invention, optionally, the user terminal device may also report the second distance, and the base station determines whether the second distance is less than a set reference distance. If it is less than the set reference distance, the estimated sensing path loss value is calculated using the calculation formula in Embodiment 5. Alternatively, the user terminal device reports the echo delay τ2, and the base station calculates the second distance between the sensing target and the user terminal device. When the calculated R2 is less than the set reference distance (e.g., 1m), the estimated value of the sensing path loss is calculated using the calculation formula in Example 5.

[0193] In step 5 above, optionally, the base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss value and the path loss deviation, including:

[0194] The base station calculates the actual value of the sensing path loss between the base station and the sensing target using the following formula:

[0195]

[0196] Among them, PL rb This represents the actual value of the sensing path loss. ΔPL is the estimated value of the sensing path loss, and ΔPL is the path loss deviation.

[0197] Optionally, in step 6 above, the base station adjusts the transmission power of the sensing signal based on the actual value of the sensing path loss, including:

[0198] The base station determines the required sensing signal transmission power based on the actual value of the sensing path loss.

[0199] If the required sensing signal transmission power is less than the maximum sensing signal transmission power of the base station, the base station adjusts the sensing signal transmission power by changing the transmission bandwidth of the sensing signal, or by changing the power density of the bandwidth occupied by the sensing channel.

[0200] If the required sensing signal transmission power is greater than the maximum sensing signal transmission power of the base station, the base station adjusts the sensing signal transmission power by changing the sensing signal transmission period.

[0201] That is, when the required sensing signal transmission power is greater than the maximum sensing signal transmission power of the base station, the transmission period of the sensing signal is changed to increase the transmission period, and the required sensing signal transmission power is achieved through power accumulation.

[0202] Optionally, if the base station adjusts the transmission power of the sensing signal by changing the transmission period of the sensing signal, the method further includes:

[0203] The base station sends the modified sensing signal transmission period to the terminal.

[0204] Optionally, the base station can notify the UE of the changed transmission period of the sensing signal via DCI or RRC signaling to avoid interference.

[0205] Please refer to Figure 7 This invention also provides a method for adjusting the transmission power of a sensing signal, comprising:

[0206] Step 1: The user terminal equipment obtains the first distance between the base station and the user terminal equipment and reports it to the base station;

[0207] In this embodiment of the invention, optionally, the user terminal device can obtain the first distance R1 between itself and the base station through the positioning reference signal (PRS).

[0208] Step 2: The user terminal equipment reports the reference signal received power to the base station;

[0209] Step 3: The user terminal device sends a sensing signal and determines the sensing information based on the echo signal reflected by the sensing target.

[0210] In this embodiment of the invention, when the user terminal device sends a sensing signal, the sensing signal transmission power can be equal to the uplink power when the random access is successful, or equal to the PDSCH uplink transmission power, or the PDCCH uplink transmission power, etc.

[0211] Step 4: The user terminal device reports the sensing information to the base station.

[0212] In this embodiment of the invention, the user terminal device provides the sensing information obtained from sensing the target object to the base station, so that the base station can provide different sensing signal transmission power for different target objects, thereby ensuring the base station's detection capability for the target object.

[0213] In this embodiment of the invention, optionally, the sensing signal transmission power adjustment method further includes:

[0214] The user terminal device determines the estimated value of the communication path loss based on the first distance;

[0215] The user terminal equipment reports the estimated communication path loss value to the base station.

[0216] In this embodiment of the invention, optionally, the user terminal device determines the estimated communication path loss value based on the first distance by:

[0217] The user terminal device calculates the estimated communication path loss based on the following formula:

[0218]

[0219] or

[0220]

[0221] or

[0222]

[0223] in, Here, R1 is the estimated communication path loss, λ is the carrier wavelength, f is the carrier frequency, and β1 is the spatial loss intercept, which is a constant, for example, -32.44.

[0224] In some embodiments of the present invention, optionally, the sensing information reported by the user terminal device includes:

[0225] The user terminal device determines the return loss based on the echo signal; and the user terminal device determines the echo delay or the second distance between the user terminal device and the sensing target based on the echo signal, wherein the echo delay is used to calculate the second distance.

[0226] In some other embodiments of the present invention, optionally, the sensing information reported by the user terminal device includes: a return loss ratio factor determined by the user terminal device based on the echo signal; and an echo delay determined by the user terminal device based on the echo signal or a second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance.

[0227] In some other embodiments of the present invention, optionally, the sensing information reported by the user terminal device includes: the return loss determined by the user terminal device based on the echo signal. In this embodiment, optionally, the sensing information reported by the user terminal device includes: calculating a second distance between the sensing target and the user terminal device based on the acquired echo delay τ2. When the calculated R2 is less than the set reference distance (e.g., 1m), the user terminal device only reports the return loss.

[0228] In this invention, the return loss can be the difference between the transmit power and the receive power.

[0229] Please refer to Figure 8 In this embodiment of the invention, when there are multiple sensing targets within the sensing range, the user terminal device can select the sensing information of the sensing target with the greatest return loss and send it to the base station. Figure 8 In the embodiment shown, the return loss of target A is greater than that of target B, so the sensing information of target A can be selected and reported to the base station.

[0230] The above embodiments of the present invention have the following advantages: combining a communication system with a sensing system enables the base station to sense passive objects while saving transmission power. Utilizing information obtained from user terminal equipment provides sensing information for the base station, allowing the base station to employ different transmission powers when covering passive objects at different distances.

[0231] Please refer to Figure 9 According to an embodiment of the present invention, a base station 90 is characterized in that it includes:

[0232] The first acquisition module 91 is used to acquire the first distance and communication path loss estimate between the base station and the user terminal equipment;

[0233] The first receiving module 92 is used to receive the reference signal receiving power reported by the user terminal device, and determine the actual value of the communication path loss between the base station and the user terminal device based on the reference signal receiving power and the communication signal transmitting power of the base station.

[0234] The second acquisition module 93 is used to acquire the path loss deviation between the estimated value of the communication path loss and the actual value of the communication path loss.

[0235] The first determining module 94 is used to determine the estimated value of the sensing path loss between the base station and the sensing target based on the first distance and the sensing information reported by the user terminal device, wherein the sensing information is determined by the user terminal device sensing the sensing target.

[0236] The second determining module 95 is used to determine the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss value and the path loss deviation.

[0237] The power adjustment module 96 is used to adjust the transmission power of the sensing signal according to the actual value of the sensing path loss.

[0238] In this embodiment of the invention, by utilizing the sensing information obtained by the user terminal device from sensing the target object, the base station can provide different sensing signal transmission power for different target objects, thereby ensuring the base station's detection capability for the target object.

[0239] Optionally, the first acquisition module 91 is configured to receive the estimated communication path loss value sent by the user terminal device; or, determine the estimated communication path loss value based on the first distance.

[0240] Optionally, the first acquisition module 91 is used to calculate the estimated communication path loss value based on the following formula:

[0241]

[0242] or

[0243]

[0244] or

[0245]

[0246] in, R1 is the estimated value of the communication path loss, λ is the wavelength of the carrier, f is the frequency of the carrier, and β1 is the spatial loss intercept, which is a constant.

[0247] Optionally, the perceived information includes:

[0248] The return loss between the user terminal device and the sensing target;

[0249] as well as,

[0250] The echo delay between the user terminal device and the sensing target or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance;

[0251] The first determining module 94 is used to determine the estimated value of the sensing path loss between the base station and the sensing target based on the first distance, the second distance and the return loss.

[0252] Optionally, the first determining module 94 is used to calculate the estimated value of the sensing path loss based on the following formula:

[0253]

[0254] in, PL is the estimated value of the sensing path loss. ra R1 represents the return loss, R2 represents the first distance, and R2 represents the second distance.

[0255] Optionally, the perceived information includes:

[0256] The return loss scaling factor between the user terminal device and the sensing target;

[0257] as well as,

[0258] The echo delay between the user terminal device and the sensing target or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance;

[0259] The first determining module 94 is used to determine the estimated value of the sensing path loss between the base station and the sensing target based on the first distance, the second distance and the return loss ratio factor.

[0260] Optionally, the first determining module 94 is used to calculate the estimated value of the sensing path loss based on the following formula:

[0261]

[0262] in, α is the estimated value of the sensing path loss. r R1 is the return loss scaling factor, R2 is the first distance, and R2 is the second distance.

[0263] Optionally, the sensing information includes: the return loss between the user terminal device and the sensing target;

[0264] The first determining module 94 is used to determine the estimated value of the sensing path loss between the base station and the sensing target based on the first distance and the return loss.

[0265] Optionally, the first determining module 94 is used to calculate the estimated value of the sensing path loss based on the following formula:

[0266]

[0267] in, PL is the estimated value of the sensing path loss. raR1 represents the return loss, and R1 represents the first distance.

[0268] Optionally, the second determining module 95 is used to calculate the actual value of the sensing path loss between the base station and the sensing target using the following formula:

[0269]

[0270] Among them, PL rb This represents the actual value of the sensing path loss. ΔPL is the estimated value of the sensing path loss, and ΔPL is the path loss deviation.

[0271] Optionally, the power adjustment module 96 is used to determine the required sensing signal transmission power based on the actual value of the sensing path loss; if the required sensing signal transmission power is less than the maximum sensing signal transmission power of the base station, the sensing signal transmission power is adjusted by changing the transmission bandwidth of the sensing signal, or by changing the power density of the bandwidth occupied by the sensing channel; if the required sensing signal transmission power is greater than the maximum sensing signal transmission power of the base station, the sensing signal transmission power is adjusted by changing the transmission period of the sensing signal.

[0272] Optionally, the base station 90 further includes a transmission module for transmitting the modified transmission period of the sensing signal to the terminal.

[0273] Please refer to Figure 10 The present invention also provides a user terminal device 100, comprising:

[0274] The first reporting module 101 is used to obtain the first distance between the base station and the user terminal equipment and report it to the base station;

[0275] The second reporting module 102 is used to report the reference signal received power to the base station;

[0276] The sensing module 103 is used to send a sensing signal and determine sensing information based on the echo signal reflected by the sensing target to the sensing signal;

[0277] The third reporting module 104 is used to report the sensing information to the base station.

[0278] In this embodiment of the invention, the user terminal device provides the sensing information obtained from sensing the target object to the base station, so that the base station can provide different sensing signal transmission power for different target objects, thereby ensuring the base station's detection capability for the target object.

[0279] Optionally, the user terminal device 100 further includes:

[0280] The determining module is used to determine the estimated value of the communication path loss based on the first distance;

[0281] The third reporting module is used to report the estimated communication path loss value to the base station.

[0282] Optionally, the determining module is used to calculate the estimated communication path loss based on the following formula:

[0283]

[0284] or

[0285]

[0286] or

[0287]

[0288] in, R1 is the estimated value of the communication path loss, λ is the wavelength of the carrier, f is the frequency of the carrier, and β1 is the spatial loss intercept, which is a constant.

[0289] Optionally, the perceived information includes:

[0290] The user terminal equipment determines the return loss based on the echo signal;

[0291] as well as,

[0292] The user terminal device determines the echo delay based on the echo signal or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance.

[0293] Optionally, the perceived information includes:

[0294] The user terminal equipment determines the return loss scaling factor based on the echo signal;

[0295] as well as,

[0296] The user terminal device determines the echo delay based on the echo signal or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance.

[0297] Optionally, the sensing information includes: the return loss determined by the user terminal device based on the echo signal.

[0298] Please refer to Figure 11The present invention also provides a base station 110, including a processor 111, a memory 112, and a computer program stored in the memory 112 and executable on the processor 111. When the computer program is executed by the processor 111, it implements the various processes of the above-described embodiment of the sensing signal transmission power adjustment method applied to the base station and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0299] Please refer to Figure 12 The present invention also provides a terminal 120, including a processor 121, a memory 122, and a computer program stored in the memory 122 and executable on the processor 121. When the computer program is executed by the processor 121, it implements the various processes of the above-described embodiment of the sensing signal transmission power adjustment method applied to the terminal and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0300] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the various processes of the above-described sensing signal transmission power adjustment method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0301] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0302] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0303] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A method for adjusting the transmission power of a sensing signal, characterized in that, include: The base station obtains the first distance and estimated communication path loss between the base station and the user terminal equipment; The base station receives the reference signal reception power reported by the user terminal device, and determines the actual value of the communication path loss between the base station and the user terminal device based on the reference signal reception power and the communication signal transmission power of the base station. The base station obtains the path loss deviation between the estimated value of the communication path loss and the actual value of the communication path loss; The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance and the sensing information reported by the user terminal device, wherein the sensing information is determined by the user terminal device sensing the sensing target; The base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss value and the path loss deviation. The base station adjusts the transmission power of the sensing signal based on the actual value of the sensing path loss.

2. The method according to claim 1, characterized in that, The base station obtains the estimated communication path loss between itself and the user terminal equipment, including: The base station receives the estimated communication path loss value sent by the user terminal equipment; or The base station determines the estimated communication path loss value based on the first distance.

3. The method according to claim 2, characterized in that, The base station determines the estimated communication path loss value based on the first distance by including: The base station calculates the estimated communication path loss based on the following formula: ； or ； or ； in, This is the estimated value for the communication path loss. For the first distance, The wavelength of the carrier wave. For the frequency of the carrier wave, Let be the space loss intercept, which is a constant.

4. The method according to claim 1, characterized in that, The sensed information includes: The return loss between the user terminal device and the sensing target; as well as, The echo delay between the user terminal device and the sensing target or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance; The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including: The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss.

5. The method according to claim 4, characterized in that, The base station determines the estimated sensing path loss between itself and the sensing target based on the first distance, the second distance, and the return loss, including: The base station calculates the estimated sensing path loss based on the following formula: ； in, This is the estimated value for the sensing path loss. For the return loss, For the first distance, This is the second distance.

6. The method according to claim 1, characterized in that, The sensed information includes: The return loss scaling factor between the user terminal device and the sensing target; as well as, The echo delay between the user terminal device and the sensing target or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance; The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including: The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance, the second distance, and the return loss scaling factor.

7. The method according to claim 6, characterized in that, The base station determines the estimated sensing path loss between itself and the sensing target based on the first distance, the second distance, and the return loss scaling factor, including: The base station calculates the estimated sensing path loss based on the following formula: ； in, This is the estimated value for the sensing path loss. The return loss scaling factor is... For the first distance, This is the second distance.

8. The method according to claim 1, characterized in that, The sensing information includes: the return loss between the user terminal device and the sensing target; The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the sensing information reported by the user terminal device, including: The base station determines the estimated sensing path loss between the base station and the sensing target based on the first distance and the return loss.

9. The method according to claim 8, characterized in that, The base station determines an estimated sensing path loss between itself and the sensing target based on the first distance and the return loss, including: The base station calculates the estimated sensing path loss based on the following formula: ； in, This is the estimated value for the sensing path loss. For the return loss, This is the first distance.

10. The method according to claim 1, characterized in that, The base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss and the path loss deviation, including: The base station calculates the actual value of the sensing path loss between the base station and the sensing target using the following formula: ； in, This represents the actual value of the sensing path loss. This is the estimated value for the sensing path loss. This refers to the path loss deviation.

11. The method according to claim 1, characterized in that, The base station adjusts the transmission power of the sensing signal based on the actual value of the sensing path loss, including: The base station determines the required sensing signal transmission power based on the actual value of the sensing path loss. If the required sensing signal transmission power is less than the maximum sensing signal transmission power of the base station, the base station adjusts the sensing signal transmission power by changing the transmission bandwidth of the sensing signal, or by changing the power density of the bandwidth occupied by the sensing channel. If the required sensing signal transmission power is greater than the maximum sensing signal transmission power of the base station, the base station adjusts the sensing signal transmission power by changing the sensing signal transmission period.

12. The method according to claim 11, characterized in that, If the base station adjusts the transmission power of the sensing signal by changing the transmission period of the sensing signal, the method further includes: The base station sends the modified sensing signal transmission period to the terminal.

13. A method for adjusting the transmission power of a sensing signal, characterized in that, include: The user terminal equipment obtains the first distance between itself and the base station and reports it to the base station; The user terminal equipment reports a reference signal received power to the base station, wherein the reference signal received power is used by the base station to determine the actual value of the communication path loss between the base station and the user terminal equipment based on the reference signal received power and the communication signal transmitted power of the base station, and the base station obtains the path loss deviation between the estimated value of the communication path loss and the actual value of the communication path loss. The user terminal device sends a sensing signal and determines sensing information based on the echo signal reflected by the sensing target. The user terminal device reports the sensing information to the base station, wherein the first distance and the sensing information are used by the base station to determine the estimated value of the sensing path loss between the base station and the sensing target, the base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated value of the sensing path loss and the path loss deviation, and adjusts the sensing signal transmission power based on the actual value of the sensing path loss.

14. The method according to claim 13, characterized in that, Also includes: The user terminal device determines the estimated communication path loss value based on the first distance; The user terminal equipment reports the estimated communication path loss to the base station.

15. The method according to claim 14, characterized in that, The user terminal device determines the estimated communication path loss value based on the first distance by including: The user terminal device calculates the estimated communication path loss based on the following formula: ； or ； or ； in, This is the estimated value for the communication path loss. For the first distance, The wavelength of the carrier wave. For the frequency of the carrier wave, Let be the space loss intercept, which is a constant.

16. The method according to claim 13, characterized in that, The sensed information includes: The user terminal equipment determines the return loss based on the echo signal; as well as, The user terminal device determines the echo delay based on the echo signal or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance.

17. The method according to claim 13, characterized in that, The sensed information includes: The user terminal equipment determines the return loss scaling factor based on the echo signal; as well as, The user terminal device determines the echo delay based on the echo signal or the second distance between the user terminal device and the sensing target, wherein the echo delay is used to calculate the second distance.

18. The method according to claim 13, characterized in that, The sensed information includes: the return loss determined by the user terminal device based on the echo signal.

19. A base station, characterized in that, include: The first acquisition module is used to acquire the first distance and estimated communication path loss between the base station and the user terminal equipment. The first receiving module is used to receive the reference signal receiving power reported by the user terminal device, and determine the actual value of the communication path loss between the base station and the user terminal device based on the reference signal receiving power and the communication signal transmitting power of the base station. The second acquisition module is used to acquire the path loss deviation between the estimated value of the communication path loss and the actual value of the communication path loss. The first determining module is used to determine the estimated value of the sensing path loss between the base station and the sensing target based on the first distance and the sensing information reported by the user terminal device, wherein the sensing information is determined by the user terminal device sensing the sensing target. The second determining module is used to determine the actual value of the sensing path loss between the base station and the sensing target based on the estimated sensing path loss value and the path loss deviation. The power adjustment module is used to adjust the transmission power of the sensing signal according to the actual value of the sensing path loss.

20. A user terminal device, characterized in that, include: The first reporting module is used to obtain the first distance between the base station and the user terminal equipment and report it to the base station; The second reporting module is used to report the reference signal received power to the base station. The reference signal received power is used by the base station to determine the actual value of the communication path loss between the base station and the user terminal equipment based on the reference signal received power and the communication signal transmitted power of the base station. The base station obtains the path loss deviation between the estimated value of the communication path loss and the actual value of the communication path loss. The sensing module is used to send sensing signals and determine sensing information based on the echo signals reflected by the sensing target to the sensing signals. The third reporting module is used to report the sensing information to the base station. The first distance and the sensing information are used by the base station to determine the estimated value of the sensing path loss between the base station and the sensing target. The base station determines the actual value of the sensing path loss between the base station and the sensing target based on the estimated value of the sensing path loss and the path loss deviation. The base station adjusts the sensing signal transmission power based on the actual value of the sensing path loss.

21. A base station, characterized in that, include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the sensing signal transmission power adjustment method as described in any one of claims 1 to 12.

22. A user terminal device, characterized in that, include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the sensing signal transmission power adjustment method as described in any one of claims 13 to 18.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the sensing signal transmission power adjustment method as described in any one of claims 1 to 12; or, when executed by a processor, the computer program implements the steps of the sensing signal transmission power adjustment method as described in any one of claims 13 to 18.

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