Uplink power control method, base station, terminal, storage medium, and computer program product

Abstract

The embodiment of the application discloses an uplink power control method, a base station, a terminal, a storage medium and a computer program product. The uplink power control method applied to the base station comprises the following steps: a first power offset value and / or a first power adjustment value are indicated to a terminal, so that the terminal controls the uplink power of a sensing signal based on a sounding reference signal (SRS) uplink power control scheme, the first power offset value and / or the first power adjustment value; the first power offset value is used for compensating for a path loss difference value of sensing relative to communication; the first power offset value is a dynamic variable value obtained by using an algorithm; the first power adjustment value is obtained from a power adjustment value candidate set, and is used for determining a closed-loop power adjustment value of the sensing signal; and the power adjustment value candidate set is obtained by expanding an SRS power adjustment value set.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to an uplink power control method, a base station, a terminal, a storage medium, and a computer program product. Background Technology

[0002] Uplink power control allows terminals far from the base station to increase their transmission power so that the base station can receive signals normally, while terminals closer to the base station can reduce their transmission power, saving power and reducing interference to other devices.

[0003] Currently, the uplink power control scheme for the Sounding Reference Signal (SRS) employs a closed-loop power control method. SRS uplink power control is used for path loss estimation based on the dissimilarity of uplink and downlink channels. Since the uplink and downlink channels are essentially identical, the downlink reference signal can be used for uplink path loss estimation.

[0004] When perception is introduced, such as Figure 1 As shown, the terminal sends a sensing signal, and the base station receives the sensing signal. This path loss is greater than or equal to the communication path loss. Even assuming that the path loss is proportional to the path length, the sensing path loss can be roughly estimated based on the difference in path length. However, since the sensing target is unknown, the difference between the sensing path and the communication path cannot be estimated. The sensing signal is similar to SRS, and the uplink power control scheme of SRS can be used to implement the uplink power control of the sensing signal. However, the path loss value of the existing SRS is much smaller than the actual path loss value of the sensing signal, making it difficult to directly use the SRS uplink power control scheme to effectively implement the uplink power control of the sensing signal. Adjusting to the expected power requires multiple feedbacks, which is inefficient and wasteful of resources. Summary of the Invention

[0005] This application provides an uplink power control method, a base station, a terminal, a storage medium, and a computer program product. Based on existing SRS uplink power control schemes, it adds a power offset value and expands the selectable power adjustment values. These two methods can be used together or separately, effectively enabling absolute value power control for sensing signals, reducing the number of cumulative value power control operations, saving resource overhead, and improving the uplink power control efficiency of sensing signals.

[0006] The technical solution of this application embodiment is implemented as follows:

[0007] This application provides an uplink power control method applied to a base station, the method comprising:

[0008] Indicate a first power offset value and / or a first power adjustment value to the terminal so that the terminal can control the uplink power of the sensing signal based on the detection reference signal SRS uplink power control scheme, the first power offset value and / or the first power adjustment value;

[0009] The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation;

[0010] The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

[0011] The above method also includes:

[0012] The first power offset value is determined based on the location of the base station and the terminal, the maximum sensing distance of the sensing signal, and the downlink path loss value.

[0013] Alternatively, the first power offset value can be determined based on the height at which the terminal is located.

[0014] In the above method, determining the first power offset value based on the locations of the base station and the terminal, the maximum sensing distance of the sensing signal, and the downlink path loss value includes:

[0015] Construct an ellipse with the locations of the base station and the terminal as the two foci, and the sum of the distances to the two foci as the maximum sensing distance; and determine the area within the ellipse as the sensing coverage area.

[0016] Determine an intermediate value for the path length, such that the probability of the sensing path of a sensing target within the sensing coverage area being greater than or less than the intermediate value for the path length is 1 / 2.

[0017] Based on the locations of the base station and the terminal, the distance between the base station and the terminal is determined;

[0018] The first power offset value is determined based on the median path length, the distance value, and the downlink path loss value.

[0019] In the above method, determining the first power offset value based on the median path length, the distance value, and the downlink path loss value includes:

[0020] Calculate the difference between the median path length and the distance value to obtain a first value;

[0021] Calculate the ratio of the first value to the distance value to obtain the second value;

[0022] The first power offset value is obtained by multiplying the second value by the downlink path loss value.

[0023] In the above method, indicating the first power offset value to the terminal includes:

[0024] Configure the terminal with first downlink control information (DCI), the first DCI carrying the first power offset value.

[0025] The above method also includes:

[0026] A power offset value candidate set is configured to the terminal via semi-static signaling;

[0027] The power offset value candidate set includes the first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index.

[0028] In the above method, indicating the first power offset value to the terminal includes:

[0029] Configure a second DCI on the terminal, the second DCI carrying an index of the first power offset value.

[0030] The above method also includes:

[0031] If the position change of the terminal exceeds a threshold, the first power offset value is re-determined and indicated to the terminal.

[0032] The above method also includes:

[0033] The power adjustment value candidate set is configured to the terminal via semi-static signaling;

[0034] In the power adjustment value candidate set, the same index corresponds to a pair of power adjustment values, one of which is applied to the cumulative power control adjustment method and the other is applied to the absolute value power control adjustment method.

[0035] In the above method, indicating the first power adjustment value to the terminal includes:

[0036] Configure the terminal with third DCI and indication information;

[0037] The third DCI is used to indicate the index of a pair of power adjustment values ​​that contain the first power adjustment value in the power adjustment value candidate set;

[0038] The indication information is used to indicate the power control adjustment method applied to the first power adjustment value.

[0039] This application provides an uplink power control method applied to a terminal, the method comprising:

[0040] Based on the SRS uplink power control scheme, the first power offset value indicated by the base station and / or the first power adjustment value, the uplink power of the sensed signal is controlled.

[0041] The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation;

[0042] The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

[0043] In the above method, controlling the uplink power of the sensing signal based on the SRS uplink power control scheme, the first power offset value, and / or the first power adjustment value includes:

[0044] According to the power calculation formula of the SRS uplink power control scheme, combined with the first power offset value and / or the first power adjustment value, the uplink power candidate value of the sensing signal is calculated.

[0045] The uplink power of the sensing signal is controlled based on the candidate uplink power value and the maximum uplink power value of the sensing signal.

[0046] The above method also includes:

[0047] The base station receives the first downlink control information (DCI) configured in the base station, wherein the first DCI carries the first power offset value.

[0048] The above method also includes:

[0049] Receive the power offset value candidate set configured by the base station through semi-static signaling;

[0050] The power offset value candidate set includes the first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index.

[0051] The above method also includes:

[0052] The second DCI configured by the base station is received, and the second DCI carries the index of the first power offset value.

[0053] The above method also includes:

[0054] Receive the power adjustment value candidate set configured by the base station through semi-static signaling;

[0055] In the power adjustment value candidate set, the same index corresponds to a pair of power adjustment values, one of which is applied to the cumulative power control adjustment method and the other is applied to the absolute value power control adjustment method.

[0056] The above method also includes:

[0057] Receive the third DCI and indication information configured by the base station;

[0058] The third DCI is used to indicate the index of a pair of power adjustment values ​​that contain the first power adjustment value in the power adjustment value candidate set;

[0059] The indication information is used to indicate the power control adjustment method applied to the first power adjustment value.

[0060] This application provides a base station, including: a first processor, a first memory, and a first communication bus;

[0061] The first communication bus is used to establish a communication connection between the first processor and the first memory;

[0062] The first processor is configured to execute one or more computer programs stored in the first memory to implement an uplink power control method applied to a base station.

[0063] This application provides a terminal, including: a second processor, a second memory, and a second communication bus;

[0064] The second communication bus is used to establish a communication connection between the second processor and the second memory;

[0065] The second processor is configured to execute one or more computer programs stored in the second memory to implement an uplink power control method applied to the terminal.

[0066] This application provides a computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements steps in an uplink power control method applied to a base station, or steps in an uplink power control method applied to a terminal.

[0067] This application provides a computer program product, including a computer program that, when executed by a processor, implements steps in an uplink power control method applied to a base station, or steps in an uplink power control method applied to a terminal.

[0068] This application provides an uplink power control method, a base station, a terminal, a storage medium, and a computer program product. The uplink power control method applied to a base station includes: indicating a first power offset value and / or a first power adjustment value to the terminal, so that the terminal can control the uplink power of the sensing signal based on the SRS uplink power control scheme, the first power offset value, and / or the first power adjustment value; the first power offset value is used to compensate for the path loss difference between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation; the first power adjustment value is selected from a power adjustment value candidate set to determine the closed-loop power adjustment value of the sensing signal, and the power adjustment value candidate set is obtained by expanding the SRS power adjustment value set. The technical solution provided in this application adds a power offset value and expands the selectable power adjustment values ​​based on the existing SRS uplink power control scheme. These two values ​​can be used together or separately, effectively enabling absolute value power control for sensing, reducing the number of cumulative value power control operations, saving resource overhead, and improving the uplink power control efficiency of the sensing signal. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of a sensing and communication scenario in existing technologies;

[0070] Figure 2 A flowchart illustrating an uplink power control method provided in this application embodiment. Figure 1 ;

[0071] Figure 3 A schematic diagram illustrating the calculation of an exemplary intermediate value of path length provided in an embodiment of this application;

[0072] Figure 4 A flowchart illustrating an uplink power control method provided in this application embodiment. Figure 2 ;

[0073] Figure 5 A schematic diagram of a base station structure provided in an embodiment of this application. Figure 1 ;

[0074] Figure 6 A schematic diagram of a base station structure provided in an embodiment of this application. Figure 2 ;

[0075] Figure 7 A schematic diagram of the structure of a terminal provided in this application embodiment. Figure 1 ;

[0076] Figure 8 A schematic diagram of the structure of a terminal provided in this application embodiment. Figure 2 . Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0078] The technical solutions of this application and how they solve the aforementioned technical problems will be described in detail below through embodiments and in conjunction with the accompanying drawings. The embodiments below can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0079] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0080] This application provides an uplink power control method, which, based on the SRS uplink power control scheme, adds a first power offset value to compensate for the difference in path loss between sensing and communication, and / or expands the SRS power adjustment value set to provide a first power adjustment value that meets the requirements.

[0081] The SRS uplink power control scheme is expressed by the following formula (1):

[0082]

[0083] P SRS,b,f,c (i,q s ,l) represents the uplink power of the SRS;

[0084] P CMAX,f,c (i) represents the maximum transmission power of SRS, and i is the timing of an SRS transmission.

[0085] P O_SRS,b,f,c (q s )+10log 10 (2 μ ·M SRS,b,f,c (i))+α SRS,b,f,c (q s )·PL b,f,c (q d )+

[0086] h b,f,c (i,l) is the power calculation formula for the candidate uplink power values, where:

[0087] P O_SRS,b,f,c (q s ) is the power configured in the SRS resource set in the Radio Resource Control (RRC) signaling SRS configuration (SRS-Config);

[0088] M SRS,b,f,c (i) is the number of resource blocks (RBs) of SRS bandwidth during transmission;

[0089] α SRS,b,f,c (q s ) is a parameter configured in SRS-ResourceSet within the RRC signaling SRS-Config;

[0090] PL b,f,c (q d ) is the terminal index q d The downlink path loss value calculated from the corresponding reference signal (RS);

[0091] h b,f,c (i,l) is the closed-loop power regulation value of the SRS, derived from the power regulation value δ. SRS,b,f,c Decision, δ SRS,b,f,c Indicated by Downlink Control Information (DCI).

[0092] Based on the above, the uplink power control method provided in this application will be described from the perspectives of the base station side and the terminal side, respectively.

[0093] Figure 2 A flowchart illustrating an uplink power control method provided in this application embodiment. Figure 1 .like Figure 2 As shown in the embodiments of this application, the uplink power control method applied to a base station mainly includes the following steps:

[0094] S101. Indicate a first power offset value and / or a first power adjustment value to the terminal so that the terminal can control the uplink power of the sensing signal based on the SRS uplink power control scheme, the first power offset value and / or the first power adjustment value;

[0095] The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation;

[0096] The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

[0097] In embodiments of this application, the base station may indicate a first power offset value and / or a first power adjustment value to the terminal so that the terminal can control the uplink power of the sensed signal in conjunction with the SRS uplink power control scheme.

[0098] It should be noted that, in the embodiments of this application, the base station may indicate at least one of a first power offset value and a first power adjustment value to the terminal. The specific content indicated may be determined according to actual needs and application scenarios, and is not limited in the embodiments of this application.

[0099] The following sections explain how the first power offset value and the first power adjustment value are determined and indicated.

[0100] In the embodiments of this application, considering the difference between sensing and communication, the path loss value of SRS power control is smaller than the path loss value of sensing signal. Therefore, a first power offset value is added to the formula (1) to compensate for the difference in path loss between sensing and communication. Specifically, in formula (1), the smaller of the maximum transmission power of SRS signal and the uplink power candidate value calculated by another power calculation formula is selected as the uplink power of SRS signal. Based on this, when calculating the uplink power of sensing signal, the first power offset value can be superimposed according to the power calculation formula in formula (1) to calculate the uplink power candidate value of sensing signal, which is then used to control the uplink power of reference signal. It should be noted that when calculating the uplink power candidate value of sensing signal according to the power calculation formula in formula (1) combined with the first power offset value, the SRS-related parameters in formula (1) are replaced with the relevant parameters of sensing signal.

[0101] In the embodiments of this application, since the sensing target is uncertain, the actual power offset value cannot be determined to compensate for the path loss. It is necessary to find a suitable power offset value, namely a first power offset value, that is, to make it as close as possible to the actual power offset value. The base station can perform the following steps to determine the first power offset value: determine the first power offset value based on the location of the base station and the terminal, the maximum sensing distance of the sensing signal, and the downlink path loss value, or determine the first power offset value based on the height of the terminal.

[0102] In embodiments of this application, the base station determines a first power offset value based on the locations of the base station and the terminal, the maximum sensing distance of the sensing signal, and the downlink path loss value. This includes: constructing an ellipse with the locations of the base station and the terminal as two foci, and the sum of the distances to the two foci being the maximum sensing distance; defining the area within the ellipse as the sensing coverage area; determining an intermediate path length such that the probability of the sensing path of a sensing target within the sensing coverage area being greater than or less than the intermediate path length is 1 / 2; determining the distance between the base station and the terminal based on their locations; and determining the first power offset value based on the intermediate path length, the distance value, and the downlink path loss value.

[0103] In embodiments of this application, the base station determines a first power offset value based on the median path length, the distance value, and the downlink path loss value, including: calculating the difference between the median path length and the distance value to obtain a first value; calculating the ratio of the first value to the distance value to obtain a second value; and calculating the product of the second value and the downlink path loss value to obtain the first power offset value.

[0104] For example, in an embodiment of this application, see Figure 3 The two circles on the x-axis represent the positions of the base station and the terminal. The process of determining the first power offset value can be as follows: After the sensing signal is configured, a maximum unambiguous distance, i.e., the maximum sensing distance, can be determined. Δf represents the carrier spacing, and c represents the speed of light. The sensing coverage area can be determined based on the maximum sensing distance: the locations of the base station and the terminal are considered as two focal points, and the distance between these focal points, i.e., the distance between the base station and the terminal, is valued as d. c Draw an ellipse by connecting the sum of the distances from any point to the two foci, which is the maximum perceptible distance. Right now Figure 3 The outermost ellipse represents the sensing coverage area, and the region within the ellipse is the sensing coverage area. Since the sensing target appears randomly within the sensing coverage area, a path length intermediate value d can be found. s Let the probability that the sensing path of a target within the sensing coverage area is greater than or less than the median path length be 1 / 2. Choosing this median path length minimizes the number of power adjustments required for the accumulated value. The area of ​​the sensing coverage area can be calculated using the formula for the maximum sensing ellipse. Given the distance between the two foci, similarly, we can use the locations of the base station and the terminal as the two foci, and draw a line connecting the sum of the distances from any point to the two foci as the midpoint of the distance, thus drawing another ellipse. Figure 3 The inner ellipse can be represented by two equations: π·d s / 2·d b / 2=S / 2,(d b / 2) 2 =(d s / 2) 2 -(d c / 2) 2 Solve for d s d b It is the length of the minor semi-axis of the ellipse constructed using the median path length. Based on this, the first power offset value P can be calculated. offset (i)=(d s -d c ) / d c ·PL b,f,c (q d The path length is directly proportional to the path loss.

[0105] In embodiments of this application, the terminal can be a mobile phone or a flight device, such as an aircraft. In this case, the base station can also determine a first power offset value based on the altitude of the terminal. Specifically, the first power offset value can be determined according to a function related to the altitude of the terminal. For example, the first power offset value P offset (i) = k × h, where k is the set compensation factor and h is the coverage of the terminal.

[0106] In the embodiments of this application, the base station indicates a first power offset value to the terminal, which can be directly indicated by a DCI. The steps are as follows: configure a first DCI to the terminal, and the first DCI carries the first power offset value.

[0107] In embodiments of this application, the base station can also configure a power offset value candidate set to the terminal via semi-static signaling; wherein, the power offset value candidate set includes a first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index. Based on this, the base station can also indicate the first power offset value to the terminal by indicating the index, as follows: configure a second DCI to the terminal, wherein the second DCI carries the index of the first power offset value.

[0108] It should be noted that, in the embodiments of this application, some commonly used values ​​can be selected to form a power offset value candidate set according to the actual application scenario, which includes a first power offset value. The specific number and values ​​of the power offset values ​​included in the power offset value candidate set are not limited in the embodiments of this application.

[0109] It should be noted that, in the embodiments of this application, the above are only two exemplary methods for indicating the first power offset value. Of course, the base station may also use other methods to indicate the first power offset value to the terminal according to actual needs and application scenarios. This application embodiment does not limit this.

[0110] It should be noted that in the embodiments of this application, the positions of the base station and the terminal are used in the process of determining the first power offset value. The movement of the terminal will affect the magnitude of the first power offset value. Based on this, if the change in the position of the terminal exceeds the threshold, the base station can redetermine the first power offset value and indicate it to the terminal. The specific determination method and indication method are the same as those described above, and will not be repeated here.

[0111] In the embodiments of this application, the uplink power control of the sensing signal is implemented based on the SRS uplink power control scheme, see formula (1), h b,f,c (i,l) is the closed-loop power regulation value of the SRS, derived from the power regulation value δ. SRS,b,f,cConsidering that SRS has relatively low path loss, the SRS power adjustment value set usually contains fewer power adjustment values ​​and smaller values. However, if the power adjustment values ​​in the set are used directly to determine the closed-loop power adjustment value of the sensing signal and perform uplink power control of the sensing signal, multiple feedbacks are required to adjust to the expected power, which is inefficient and wasteful of resources. Therefore, the SRS power adjustment value set is expanded to obtain a power adjustment value candidate set, which adds more optional power adjustment values. The first power adjustment value suitable for the actual needs is selected from these values ​​and indicated to the terminal.

[0112] For example, in an embodiment of this application, the power adjustment value candidate set includes the power adjustment values ​​as shown in Table 1 below:

[0113] Table 1

[0114]

[0115] Each index corresponds to a pair of power adjustment values, one applied to the cumulative power control adjustment method and the other to the absolute power control adjustment method. The power adjustment values ​​corresponding to indices 0 to 3 can actually form an SRS power adjustment set, which can be expanded to generate the candidate set of power adjustment values ​​shown in Table 1 above.

[0116] In embodiments of this application, the base station can configure a power adjustment value candidate set to the terminal via semi-static signaling; wherein, in the power adjustment value candidate set, the same index corresponds to a pair of power adjustment values, one applied to a cumulative power control adjustment method and the other applied to an absolute power control adjustment method. Based on this, the base station can indicate a first power adjustment value to the terminal by the following steps: configuring a third DCI and indication information to the terminal; wherein, the third DCI is used to indicate the index of a pair of power adjustment values ​​in the power adjustment value candidate set that contains the first power adjustment value; the indication information is used to indicate the power control adjustment method applied to the first power adjustment value.

[0117] It is understood that in the embodiments of this application, the same index corresponds to a pair of power adjustment values, and the two power adjustment values ​​in the pair of power adjustment values ​​are subject to different power control adjustment methods. Based on this, the base station needs to indicate the index and the power control adjustment method so that the terminal can determine the first power adjustment value.

[0118] It should be noted that, in the embodiments of this application, the base station may also directly indicate the first power adjustment value to the terminal, or other methods may be used to indicate it based on actual needs and application scenarios. The embodiments of this application do not limit this.

[0119] Figure 4 A flowchart illustrating an uplink power control method provided in this application embodiment. Figure 2 .like Figure 4 As shown in the embodiments of this application, the uplink power control method applied to the terminal mainly includes the following steps:

[0120] S201. Based on the SRS uplink power control scheme, the first power offset value and / or the first power adjustment value indicated by the base station, control the uplink power of the sensed signal;

[0121] The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation;

[0122] The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

[0123] In the embodiments of this application, corresponding to the base station-side method described above, the terminal can receive a first power offset value and / or a first power adjustment value indicated by the base station, thereby controlling the uplink power of the sensing signal based on the SRS uplink power control scheme, the first power offset value and / or the first power adjustment value indicated by the base station.

[0124] In the embodiments of this application, the terminal may receive a first DCI configured by the base station, which carries a first power offset value, or it may receive a power offset value candidate set configured by the base station through semi-static signaling; wherein the power offset value candidate set contains the first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index. Based on this, the terminal may also receive a second DCI configured by the base station, which carries the index of the first power offset value.

[0125] In embodiments of this application, the terminal can receive a power adjustment value candidate set configured by the base station through semi-static signaling; wherein, the same index in the power adjustment value candidate set corresponds to a pair of power adjustment values, one applied to the cumulative power control adjustment mode and the other applied to the absolute power control adjustment mode. Based on this, the terminal can also receive a third DCI and indication information configured by the base station; wherein, the third DCI is used to indicate the index of a pair of power adjustment values ​​in the power adjustment value candidate set that contains the first power adjustment value; the indication information is used to indicate the power control adjustment mode applied to the first power adjustment value.

[0126] It should be noted that, in the embodiments of this application, the way the terminal obtains the first power offset value and the first power adjustment value corresponds to the way the base station indicates the first power offset value and the first power adjustment value. For a detailed explanation of the first power offset value and the first power adjustment value, please refer to the relevant content on the base station side above, which will not be repeated here.

[0127] In embodiments of this application, the terminal controls the uplink power of the sensing signal based on the SRS uplink power control scheme, a first power offset value, and / or a first power adjustment value, including: calculating a candidate uplink power value of the sensing signal according to the power calculation formula of the SRS uplink power control scheme, combined with the first power offset value and / or the first power adjustment value; and controlling the uplink power of the sensing signal based on the candidate uplink power value and the maximum uplink power value of the sensing signal.

[0128] It should be noted that, in the embodiments of this application, the terminal can calculate the uplink power candidate value of the sensing signal according to the power calculation formula in formula (1) above, combined with the first power offset value and / or the first power adjustment value. Wherein, when the first power offset value is obtained, the first power offset value term can be added to the power calculation formula in formula (1). When the first power adjustment value is obtained, it can be used to determine the closed-loop power adjustment value term included in the power calculation formula in formula (1), that is, the closed-loop power adjustment value of the sensing signal. Based on this, the uplink power candidate value of the sensing signal is calculated. Referring to the SRS uplink power control scheme shown in formula (1), the uplink power of SRS is controlled based on the uplink power candidate value and the uplink power maximum value of SRS. The terminal can control the uplink power of the sensing signal based on the uplink power candidate value and the uplink power maximum value of the sensing signal. Specifically, the smaller of the two can be selected as the uplink power of the sensing signal.

[0129] Based on the aforementioned uplink power control method for the base station and terminal side, and in conjunction with specific application scenarios, the technical solutions provided in the embodiments of this application are described below.

[0130] In one embodiment of this application, the first power offset value P is directly configured using the DCI method. offset (i), the relevant steps are as follows:

[0131] 1. The terminal reports its location information to the base station, and the base station calculates the distance d between the two based on the terminal's location and its own location. c The base station determines the maximum sensing distance d based on the uplink sensing resource configuration. max The terminal uses these two values ​​to calculate the intermediate path length d. s P offset (i)=(d s -d c ) / d c ·PL b,f,c (q d ).

[0132] 2. The base station configures a DCI for the terminal, indicating P offset The specific values ​​are given to the terminal.

[0133] 3. When the terminal performs uplink power control on the sensing signal, it uses the most recently received P... offset (i) The uplink power candidate value of the sensing signal is calculated by combining the numerical values ​​with the power calculation formula in formula (1).

[0134] P offset The update is determined based on changes in the terminal's location. When the terminal's location changes compared to the last determined P... offset When the location change exceeds a threshold, the base station recalculates the distance d between the terminal and the base station based on the terminal's new location. c , and P offset and will the new P offset The value is indicated to the terminal using DCI.

[0135] In another embodiment of this application, the first power offset value P is directly configured using DCI+ semi-static signaling. offset (i), the relevant steps are as follows:

[0136] 1. The base station determines a Table 2 (equivalent to the above power offset value candidate set) based on commonly used power offset values, and configures Table 2 for the terminal using semi-static signaling.

[0137] Table 2

[0138] index Power offset value 0 4 1 8 2 12 3 16

[0139] 2. The base station calculates the distance d between the terminal and the base station based on the terminal's location and the base station's own location. c The base station determines the maximum sensing distance d based on the uplink sensing resource configuration. max The terminal uses these two values ​​to calculate the intermediate path length d. s Calculate the actual power offset value P. real_offset (i)=(d s -d c ) / d c ·PL b,f,c (q d Then, referring to the table, select the one closest to P. real_offset (i) is determined as P offset (i) Send the indexes in Table 2 to the terminal using DCI signaling.

[0140] 3. The terminal receives the index indicated by the DCI and determines P. offset (i) Values.

[0141] 4. When the terminal performs uplink power control on the sensing signal, it uses the most recently received P... offset (i) The uplink power candidate value of the sensing signal is calculated by combining the numerical values ​​with the power calculation formula in formula (1).

[0142] P offset The update is determined based on changes in the terminal's location. When the terminal's location changes compared to the last determined P... offset When the location change exceeds a threshold, the base station recalculates the distance d between the terminal and the base station based on the terminal's new location. c , and P offset and will the new P offset The value is indicated to the terminal using DCI.

[0143] In another embodiment of this application, the SRS power adjustment value set is expanded to obtain a power adjustment value candidate set and used. The relevant steps are as follows:

[0144] 1. The base station uses semi-static signaling to configure the power adjustment value candidate set shown in Table 1 to the terminal.

[0145] 2. The base station determines the first power adjustment value δ to be indicated based on the power of the received sensing signal. sensing,b,f,c It requires a 4-bit DCI indicator.

[0146] 3. The terminal determines the configured δ based on the first power adjustment value and indication information indicated by the base station. sensing,b,f,c Numerical values. For example, if the indication information includes tpc-Accumulation, and the index of the DCI indication is 6, then if tpc-Accumulation is empty in the indication information, then the corresponding δ... sensing,b,f,c The value is 5. If tpc-Accumulation is disabled, the corresponding δ sensing,b,f,c The value is 10.

[0147] 4. The terminal is based on δ sensing,b,f,c The closed-loop power adjustment value of the sensing signal is calculated, and the uplink power control of the sensing signal is carried out according to the scheme shown in formula (1). It should be noted that when calculating according to the power calculation formula in formula (1), a first power offset value can be added on the basis.

[0148] The technical solution provided in this application adds a power offset value and expands the selectable power adjustment values ​​based on the existing SRS uplink power control scheme. These two values ​​can be used together or separately, effectively enabling absolute value power control for sensing signals, reducing the number of cumulative value power control operations, saving resource overhead, and improving the uplink power control efficiency of sensing signals.

[0149] This application provides a base station. Figure 5 A schematic diagram of a base station structure provided in an embodiment of this application. Figure 1 .like Figure 5 As shown in the embodiments of this application, base station 1 includes:

[0150] The first processing module 11 is used to indicate a first power offset value and / or a first power adjustment value to the terminal so that the terminal can control the uplink power of the sensing signal based on the SRS uplink power control scheme, the first power offset value and / or the first power adjustment value.

[0151] The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation;

[0152] The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

[0153] In one embodiment of this application, the first processing module 11 is further configured to determine the first power offset value based on the location of the base station and the terminal, the maximum sensing distance of the sensing signal, and the downlink path loss value, or to determine the first power offset value based on the altitude of the terminal.

[0154] In one embodiment of this application, the first processing module 11 is configured to construct an ellipse with the locations of the base station and the terminal as two foci, and the sum of the distances to the two foci as the maximum sensing distance; define the area within the ellipse as the sensing coverage area; determine an intermediate path length such that the probability of the sensing path of a sensing target within the sensing coverage area being greater than or less than the intermediate path length is 1 / 2; determine the distance between the base station and the terminal based on their locations; and determine the first power offset value based on the intermediate path length, the distance value, and the downlink path loss value.

[0155] In one embodiment of this application, the first processing module 11 is used to calculate the difference between the intermediate value of the path length and the distance value to obtain a first value; calculate the ratio of the first value to the distance value to obtain a second value; and calculate the product of the second value and the downlink path loss value to obtain the first power offset value.

[0156] In one embodiment of this application, the first processing module 11 is configured to configure first downlink control information (DCI) to the terminal, wherein the first DCI carries the first power offset value.

[0157] In one embodiment of this application, the first processing module 11 is further configured to configure a power offset value candidate set to the terminal via semi-static signaling; wherein the power offset value candidate set includes the first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index.

[0158] In one embodiment of this application, the first processing module 11 is configured to configure a second DCI to the terminal, wherein the second DCI carries an index of the first power offset value.

[0159] In one embodiment of this application, the first processing module 11 is further configured to redetermine the first power offset value and indicate it to the terminal when the position change of the terminal exceeds a threshold.

[0160] In one embodiment of this application, the first processing module 11 is further configured to configure the power adjustment value candidate set to the terminal via semi-static signaling; wherein, the same index in the power adjustment value candidate set corresponds to a pair of power adjustment values, one applied to the cumulative power control adjustment mode and the other applied to the absolute value power control adjustment mode.

[0161] In one embodiment of this application, the first processing module 11 is configured to configure a third DCI and indication information to the terminal; wherein, the third DCI is used to indicate the index of a pair of power adjustment values ​​containing the first power adjustment value in the power adjustment value candidate set; and the indication information is used to indicate the power control adjustment method applied to the first power adjustment value.

[0162] Based on the same inventive concept Figure 6 A schematic diagram of a base station structure provided in an embodiment of this application. Figure 2 .like Figure 6 As shown in the embodiments of this application, base station 1 includes: a first processor 12, a first memory 13, and a first communication bus 14;

[0163] The first communication bus 14 is used to realize the communication connection between the first processor 12 and the first memory 13;

[0164] The first processor 12 is configured to execute one or more computer programs stored in the first memory 13 to implement an uplink power control method applied to a base station.

[0165] This application provides a terminal. Figure 7 A schematic diagram of the structure of a terminal provided in this application embodiment. Figure 1 .like Figure 7 As shown, in an embodiment of this application, terminal 2 includes:

[0166] The second processing module 21 is used to control the uplink power of the sensed signal based on the SRS uplink power control scheme, the first power offset value indicated by the base station and / or the first power adjustment value.

[0167] The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation;

[0168] The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

[0169] In one embodiment of this application, the second processing module 21 is used to calculate the uplink power candidate value of the sensing signal according to the power calculation formula of the SRS uplink power control scheme, combined with the first power offset value and / or the first power adjustment value; and control the uplink power of the sensing signal based on the uplink power candidate value and the maximum uplink power value of the sensing signal.

[0170] In one embodiment of this application, the second processing module 21 is further configured to receive the first downlink control information (DCI) configured by the base station, wherein the first DCI carries the first power offset value.

[0171] In one embodiment of this application, the second processing module 21 is further configured to receive a power offset value candidate set configured by the base station through semi-static signaling; wherein the power offset value candidate set includes the first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index.

[0172] In one embodiment of this application, the second processing module 21 is further configured to receive a second DCI configured by the base station, wherein the second DCI carries an index of the first power offset value.

[0173] In one embodiment of this application, the second processing module 21 is further configured to receive the power adjustment value candidate set configured by the base station through semi-static signaling; wherein, the same index in the power adjustment value candidate set corresponds to a pair of power adjustment values, one applied to the cumulative power control adjustment mode and the other applied to the absolute value power control adjustment mode.

[0174] In one embodiment of this application, the second processing module 21 is further configured to receive a third DCI and indication information configured by the base station; wherein, the third DCI is used to indicate the index of a pair of power adjustment values ​​containing the first power adjustment value in the power adjustment value candidate set; and the indication information is used to indicate the power control adjustment method applied to the first power adjustment value.

[0175] Based on the same inventive concept Figure 8 A schematic diagram of the structure of a terminal provided in this application embodiment. Figure 2 .like Figure 8 As shown in the embodiments of this application, terminal 2 includes: a second processor 22, a second memory 23, and a second communication bus 24;

[0176] The second communication bus 24 is used to realize the communication connection between the second processor 22 and the second memory 23;

[0177] The second processor 22 is used to execute one or more computer programs stored in the second memory 23 to implement an uplink power control method applied to the terminal.

[0178] This application provides a computer program product, including a computer program that, when executed by a processor, implements steps in an uplink power control method applied to a base station, or steps in an uplink power control method applied to a terminal.

[0179] This application provides a computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements steps in an uplink power control method applied to a base station, or steps in an uplink power control method applied to a terminal. The computer-readable storage medium may be volatile memory, such as random-access memory (RAM); or non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid-state drive (SSD); or it may be a device including one or any combination of the above-mentioned memories, such as a mobile phone, computer, tablet device, personal digital assistant, etc.

[0180] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0181] This application is described with reference to schematic and / or block diagrams of implementations of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the schematic and / or block diagrams can be implemented by computer program instructions, and combinations of blocks in the schematic and / or block diagrams can be implemented. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the schematic and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0182] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in the implementation flow diagram. Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0183] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0184] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An uplink power control method, characterized in that, Applied to a base station, the method includes: Indicate a first power offset value and / or a first power adjustment value to the terminal so that the terminal can control the uplink power of the sensing signal based on the detection reference signal SRS uplink power control scheme, the first power offset value and / or the first power adjustment value; The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation; The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

2. The method according to claim 1, characterized in that, The method further includes: The first power offset value is determined based on the location of the base station and the terminal, the maximum sensing distance of the sensing signal, and the downlink path loss value. Alternatively, the first power offset value can be determined based on the height at which the terminal is located.

3. The method according to claim 2, characterized in that, Determining the first power offset value based on the locations of the base station and the terminal, the maximum sensing distance of the sensing signal, and the downlink path loss value includes: Construct an ellipse with the locations of the base station and the terminal as the two foci, and the sum of the distances to the two foci as the maximum sensing distance; and determine the area within the ellipse as the sensing coverage area. Determine an intermediate value for the path length, such that the probability of the sensing path of a sensing target within the sensing coverage area being greater than or less than the intermediate value for the path length is 1 / 2. Based on the locations of the base station and the terminal, the distance between the base station and the terminal is determined; The first power offset value is determined based on the median path length, the distance value, and the downlink path loss value.

4. The method according to claim 3, characterized in that, Determining the first power offset value based on the median path length, the distance value, and the downlink path loss value includes: Calculate the difference between the median path length and the distance value to obtain a first value; Calculate the ratio of the first value to the distance value to obtain the second value; The first power offset value is obtained by multiplying the second value by the downlink path loss value.

5. The method according to claim 1, characterized in that, Indicating the first power offset value to the terminal includes: Configure the terminal with first downlink control information (DCI), the first DCI carrying the first power offset value.

6. The method according to claim 1, characterized in that, The method further includes: A power offset value candidate set is configured to the terminal via semi-static signaling; The power offset value candidate set includes the first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index.

7. The method according to claim 6, characterized in that, Indicating the first power offset value to the terminal includes: Configure a second DCI on the terminal, the second DCI carrying an index of the first power offset value.

8. The method according to any one of claims 1-7, characterized in that, The method further includes: If the position change of the terminal exceeds a threshold, the first power offset value is re-determined and configured for the terminal.

9. The method according to claim 1, characterized in that, The method further includes: The power adjustment value candidate set is configured to the terminal via semi-static signaling; In the power adjustment value candidate set, the same index corresponds to a pair of power adjustment values, one of which is applied to the cumulative power control adjustment method and the other is applied to the absolute value power control adjustment method.

10. The method according to claim 9, characterized in that, Instructing the terminal to the first power adjustment value includes: Configure the terminal with third DCI and indication information; The third DCI is used to indicate the index of a pair of power adjustment values ​​that contain the first power adjustment value in the power adjustment value candidate set; The indication information is used to indicate the power control adjustment method applied to the first power adjustment value.

11. An uplink power control method, characterized in that, Applied to a terminal, the method includes: Based on the SRS uplink power control scheme, the first power offset value indicated by the base station and / or the first power adjustment value, the uplink power of the sensed signal is controlled. The first power offset value is used to compensate for the difference in path loss between sensing and communication; the first power offset value is a dynamically variable value obtained by algorithm calculation; The first power adjustment value is selected from the power adjustment value candidate set and is used to determine the closed-loop power adjustment value of the sensing signal. The power adjustment value candidate set is obtained by expanding the SRS power adjustment value set.

12. The method according to claim 11, characterized in that, The method of controlling the uplink power of the sensed signal based on the SRS uplink power control scheme, the first power offset value, and / or the first power adjustment value includes: According to the power calculation formula of the SRS uplink power control scheme, combined with the first power offset value and / or the first power adjustment value, the uplink power candidate value of the sensing signal is calculated. The uplink power of the sensing signal is controlled based on the candidate uplink power value and the maximum uplink power value of the sensing signal.

13. The method according to claim 11, characterized in that, The method further includes: The base station receives the first downlink control information (DCI) configured in the base station, wherein the first DCI carries the first power offset value.

14. The method according to claim 11, characterized in that, The method further includes: Receive the power offset value candidate set configured by the base station through semi-static signaling; The power offset value candidate set includes the first power offset value, and each power offset value in the power offset value candidate set corresponds one-to-one with an index.

15. The method according to claim 14, characterized in that, The method further includes: The second DCI configured by the base station is received, and the second DCI carries the index of the first power offset value.

16. The method according to claim 11, characterized in that, The method further includes: Receive the power adjustment value candidate set configured by the base station through semi-static signaling; In the power adjustment value candidate set, the same index corresponds to a pair of power adjustment values, one of which is applied to the cumulative power control adjustment method and the other is applied to the absolute value power control adjustment method.

17. The method according to claim 16, characterized in that, The method further includes: Receive the third DCI and indication information configured by the base station; The third DCI is used to indicate the index of a pair of power adjustment values ​​that contain the first power adjustment value in the power adjustment value candidate set; The indication information is used to indicate the power control adjustment method applied to the first power adjustment value.

18. A base station, characterized in that, include: A first processor, a first memory, and a first communication bus; The first communication bus is used to establish a communication connection between the first processor and the first memory; The first processor is configured to execute one or more computer programs stored in the first memory to implement the uplink power control method according to any one of claims 1-10.

19. A terminal, characterized in that, include: Second processor, second memory, and second communication bus; The second communication bus is used to establish a communication connection between the second processor and the second memory; The second processor is configured to execute one or more computer programs stored in the second memory to implement the uplink power control method according to any one of claims 11-17.

20. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the uplink power control method as described in any one of claims 1-17.

21. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the uplink power control method described in any one of 1-17.

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