A method for sending referral information, a positioning service device

Abstract

The present disclosure discloses a method for sending recommendation information and a positioning service device, the method comprising: receiving feedback signals sent by each user terminal in the signal coverage range of the positioning service device; wherein the feedback signal carries the first signal strength and the first signal direction of the radio frequency signal received by the user terminal; determining the main area of the user terminal set in the signal coverage range according to the first signal strength and the first signal direction corresponding to each user terminal; adjusting the signal sending direction of the radio frequency signal to the direction where the main area is located, and sending the recommendation information; wherein the recommendation information is carried by the radio frequency signal.

Description

Technical Field

[0001] This disclosure relates to the field of intelligent systems, and in particular to a method for sending promotional information and a location service device. Background Technology

[0002] Cloud-based digital signage, such as cloud-based digital signage, is mainly used to promote shops and products in shopping malls, and simultaneously pushes the information displayed on the cloud-based digital signage to users' terminals (such as mobile phones), making it convenient for users to understand the promotional information.

[0003] In existing technologies, mobile terminals can usually receive information pushed by cloud screen digital signage within the signal coverage area. However, there are exceptions. For example, if a user terminal is blocked within the signal coverage area of ​​the cloud screen digital signage, or if there are a large number of user terminals, some user terminals within the signal coverage area may not be able to receive the information pushed by the cloud screen digital signage, resulting in poor effectiveness of cloud screen digital signage in promoting shops and products. Summary of the Invention

[0004] This disclosure provides a method for sending promotional information and a location service device to solve the aforementioned technical problems existing in the prior art.

[0005] Firstly, to solve the above-mentioned technical problems, this disclosure provides a method for sending recommendation information, applied to a location service device. The technical solution of this method is as follows:

[0006] The system receives feedback signals sent by each user terminal within the signal coverage area of ​​the positioning service device; wherein the feedback signals carry a first signal strength and a first signal direction of the radio frequency signal sent by the positioning service device received by the user terminal.

[0007] Based on the first signal strength and first signal direction corresponding to each user terminal, determine the main area where the user terminals are concentrated within the signal coverage area;

[0008] The signal transmission direction of the radio frequency signal is adjusted to the direction of the main area to transmit the promotional information; wherein the promotional information is carried by the radio frequency signal.

[0009] One possible implementation includes receiving feedback signals sent by user terminals within the signal coverage area of ​​the positioning service device, including:

[0010] The radio frequency signal is sent to a user terminal within the signal coverage area, enabling the user terminal to determine the first signal strength of the received radio frequency signal;

[0011] The user terminal receives a feedback signal carrying the first signal strength.

[0012] One possible implementation involves determining the main area where the user terminals are concentrated within the signal coverage range based on the first signal strength corresponding to each user terminal, including:

[0013] Within the signal coverage area, the area is divided into multiple fan-shaped regions of equal arc, centered on the location of the positioning service device.

[0014] A user terminal whose first signal strength reaches a set strength threshold is determined as a valid user terminal; wherein, the set strength threshold is the minimum signal strength at which the user terminal can actually receive the radio frequency signal normally;

[0015] Based on the total number of valid user terminals contained in each sector and its adjacent sector within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center, a comprehensive feature value for each sector is determined.

[0016] The sector region with the largest comprehensive feature value among the multiple sector regions is determined as the main region.

[0017] One possible implementation involves dividing the signal coverage area into multiple equidistant fan-shaped regions centered on the location of the positioning service device, including:

[0018] Centered on the location of the positioning service device, the signal coverage area is divided into 16 sector areas.

[0019] One possible implementation involves determining a comprehensive characteristic value for each sector based on the total number of valid user terminals contained in each sector and its adjacent sectors within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center, including:

[0020] Count the total number of valid user terminals contained in each of the aforementioned sector areas;

[0021] From the correspondence between preset environmental feature values ​​and relative positions, the relative position corresponding to the environmental feature value of each effective user terminal is determined, so as to determine the distance between each user terminal and the center; wherein, the environmental feature value includes the first signal strength and the corresponding first signal direction;

[0022] For each sector and its adjacent sector, the total number of valid user terminals contained in each sector, the corresponding first signal strength, and the distance are weighted and calculated to obtain the comprehensive feature value of each sector.

[0023] One possible implementation method includes a preset method for determining the correspondence between environmental feature values ​​and locations, comprising:

[0024] The signal coverage area is divided into multiple grid areas;

[0025] The second signal strength and second signal direction of the radio frequency signal received by the user terminal in each of the grid areas are detected and determined as the network characteristic value of the corresponding network area;

[0026] The location of each grid area is associated with its corresponding network feature value to obtain the correspondence between the preset environmental feature value and the location.

[0027] One possible implementation is that the formula for the weighted calculation includes:

[0028] ;

[0029] Among them, M i Let k be the comprehensive feature value of the i-th sector region. i k represents the total number of valid user terminals in the i-th sector region. i+1 k represents the total number of valid user terminals in the (i+1)th sector adjacent to the i-th sector. i-1 L represents the total number of valid user terminals in the (i-1)th sector adjacent to the i-th sector, where j is the j-th valid user terminal in the i-th sector. j The distance between the j-th valid user terminal in the corresponding sector region and the center is given. The signal direction in which the radio frequency signal is received by the j-th valid user terminal within the corresponding sector area, where i and j are natural numbers, and i is less than or equal to the total number of the sector areas within the signal coverage area, and j is less than or equal to the total number of valid user terminals within the corresponding sector area, a i b i c i k in the i-th sector region i L j , The corresponding weighting coefficient, a i-1 b i-1 c i-1 k in the (i-1)th sector region i-1 L j α jThe corresponding weighting coefficient, a i+1 b i+1 c i+1 k in the (i+1)th sector region i+1 L j α j The corresponding weighting coefficients.

[0030] One possible implementation involves adjusting the signal transmission direction of the radio frequency signal to the direction of the main area for transmitting promotional information, including:

[0031] The signal coverage area is divided into multiple signal strength level zones;

[0032] The required power of the radio frequency signal when the first signal strength of the user terminal reaches a set strength is determined on the outer boundary of a designated signal strength level area; wherein, the designated signal strength level area is a designated signal level area among a plurality of signal level areas, and the outer boundary is the boundary of the designated signal strength level area that is far away from the positioning service device;

[0033] The smaller of the expected power and the rated power of the phased antenna in the positioning service device is determined as the first transmission power for transmitting the radio frequency signal;

[0034] In the direction of the main area, the radio frequency signal carrying the promotional information is transmitted at the first transmission power.

[0035] One possible implementation involves determining the required power of the radio frequency signal when the received signal strength of the user terminal reaches a set strength at the outer boundary of a designated signal strength level zone, including:

[0036] The total number of user terminals receiving the radio frequency signal is determined between the inner boundary of the designated signal strength level area and the boundary corresponding to the set signal strength; wherein, the inner boundary is the boundary of the designated signal strength area closest to the positioning service device;

[0037] Based on the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength, and the third signal strength of the user terminals at the outer boundary, the second transmission power of the user terminals at the outer boundary is determined.

[0038] The product of the second transmission power and the weighted value of the transmission power is determined as the expected power.

[0039] One possible implementation involves determining the formula used to determine the second transmission power of the user terminal at the outer boundary, including:

[0040] Qs =C s ×N s +d s ×а s ;

[0041] Among them, Q s C is the second transmission power of the user terminal at the outer boundary. s As the weighting coefficient, the C s The unit is power per person, N s d is the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength. s α is the weighting coefficient for signal strength. s The specified signal strength.

[0042] In one possible implementation, the positioning service device uses a phased antenna array to control the transmission direction and transmission power of the radio frequency signal carrying the recommendation information. By changing the angle of each antenna in the phased antenna array and the transmission power of each antenna, the transmission direction and transmission power of the radio frequency signal carrying the recommendation information are controlled.

[0043] Secondly, embodiments of this disclosure provide a location service device, including:

[0044] The receiving unit is configured to receive feedback signals sent by each user terminal within the signal coverage area of ​​the positioning service device; wherein the feedback signal carries a first signal strength and a first signal direction of the radio frequency signal sent by the positioning service device received by the user terminal;

[0045] The determining unit is configured to determine the main area where the user terminals are concentrated within the signal coverage area based on the first signal strength and the first signal direction corresponding to each user terminal.

[0046] A transmitting unit is used to adjust the signal transmission direction of the radio frequency signal to the direction where the main area is located, and to transmit the promotional information; wherein the promotional information is carried by the radio frequency signal.

[0047] In one possible implementation, the receiving unit is used for:

[0048] The radio frequency signal is sent to a user terminal within the signal coverage area, enabling the user terminal to determine the first signal strength of the received radio frequency signal;

[0049] The user terminal receives a feedback signal carrying the first signal strength.

[0050] In one possible implementation, the determining unit is used for:

[0051] Within the signal coverage area, the area is divided into multiple fan-shaped regions of equal arc, centered on the location of the positioning service device.

[0052] A user terminal whose first signal strength reaches a set strength threshold is determined as a valid user terminal; wherein, the set strength threshold is the minimum signal strength at which the user terminal can actually receive the radio frequency signal normally;

[0053] Based on the total number of valid user terminals contained in each sector and its adjacent sector within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center, a comprehensive feature value for each sector is determined.

[0054] The sector region with the largest comprehensive feature value among the multiple sector regions is determined as the main region.

[0055] In one possible implementation, the determining unit is further configured to:

[0056] Centered on the location of the positioning service device, the signal coverage area is divided into 16 sector areas.

[0057] In one possible implementation, the determining unit is further configured to:

[0058] Count the total number of valid user terminals contained in each of the aforementioned sector areas;

[0059] From the correspondence between preset environmental feature values ​​and relative positions, the relative position corresponding to the environmental feature value of each effective user terminal is determined, so as to determine the distance between each user terminal and the center; wherein, the environmental feature value includes the first signal strength and the corresponding first signal direction;

[0060] For each sector and its adjacent sector, the total number of valid user terminals contained in each sector, the corresponding first signal strength, and the distance are weighted and calculated to obtain the comprehensive feature value of each sector.

[0061] In one possible implementation, the determining unit is further configured to:

[0062] The signal coverage area is divided into multiple grid areas;

[0063] The second signal strength and second signal direction of the radio frequency signal received by the user terminal in each of the grid areas are detected and determined as the network characteristic value of the corresponding network area;

[0064] The location of each grid area is associated with its corresponding network feature value to obtain the correspondence between the preset environmental feature value and the location.

[0065] One possible implementation is that the formula for the weighted calculation includes:

[0066] ;

[0067] Among them, M i Let k be the comprehensive feature value of the i-th sector region. i k represents the total number of valid user terminals in the i-th sector region. i+1 k represents the total number of valid user terminals in the (i+1)th sector adjacent to the i-th sector. i-1 L represents the total number of valid user terminals in the (i-1)th sector adjacent to the i-th sector, where j is the j-th valid user terminal in the i-th sector. j The distance between the j-th valid user terminal in the corresponding sector region and the center is given. The signal direction in which the radio frequency signal is received by the j-th valid user terminal within the corresponding sector area, where i and j are natural numbers, and i is less than or equal to the total number of the sector areas within the signal coverage area, and j is less than or equal to the total number of valid user terminals within the corresponding sector area, a i b i c i k in the i-th sector region i L j , The corresponding weighting coefficient, a i-1 b i-1 c i-1 k in the (i-1)th sector region i-1 L j α j The corresponding weighting coefficient, a i+1 b i+1 c i+1 k in the (i+1)th sector region i+1 L j α j The corresponding weighting coefficients.

[0068] In one possible implementation, the transmitting unit is further configured to:

[0069] The signal coverage area is divided into multiple signal strength level zones;

[0070] The required power of the radio frequency signal when the first signal strength of the user terminal reaches a set strength is determined on the outer boundary of a designated signal strength level area; wherein, the designated signal strength level area is a designated signal level area among a plurality of signal level areas, and the outer boundary is the boundary of the designated signal strength level area that is far away from the positioning service device;

[0071] The smaller of the expected power and the rated power of the phased antenna in the positioning service device is determined as the first transmission power for transmitting the radio frequency signal;

[0072] In the direction of the main area, the radio frequency signal carrying the promotional information is transmitted at the first transmission power.

[0073] In one possible implementation, the transmitting unit is further configured to:

[0074] The total number of user terminals receiving the radio frequency signal is determined between the inner boundary of the designated signal strength level area and the boundary corresponding to the set signal strength; wherein, the inner boundary is the boundary of the designated signal strength area closest to the positioning service device;

[0075] Based on the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength, and the third signal strength of the user terminals at the outer boundary, the second transmission power of the user terminals at the outer boundary is determined.

[0076] The product of the second transmission power and the weighted value of the transmission power is determined as the expected power.

[0077] One possible implementation involves determining the formula used to determine the second transmission power of the user terminal at the outer boundary, including:

[0078] Q s =C s ×N s +d s ×а s ;

[0079] Among them, Q s C is the second transmission power of the user terminal at the outer boundary. s As the weighting coefficient, the C s The unit is power per person, N s d is the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength. s α is the weighting coefficient for signal strength. s The specified signal strength.

[0080] In one possible implementation, the positioning service device uses a phased antenna array to control the transmission direction and transmission power of the radio frequency signal carrying the recommendation information. By changing the angle of each antenna in the phased antenna array and the transmission power of each antenna, the transmission direction and transmission power of the radio frequency signal carrying the recommendation information are controlled.

[0081] Thirdly, embodiments of this disclosure also provide a location service device, including:

[0082] At least one processor, and

[0083] Memory connected to the at least one processor;

[0084] The memory stores instructions that can be executed by the at least one processor, which executes the instructions stored in the memory to perform the method described in the first aspect above. Attached Figure Description

[0085] Figure 1 This is a schematic diagram illustrating the signal strength of the positioning service device provided in this embodiment when there are no obstacles obstructing the signal coverage area.

[0086] Figure 2 This is a schematic diagram illustrating the signal strength of the positioning service device provided in this embodiment when there are obstacles blocking the signal coverage area.

[0087] Figure 3 A flowchart illustrating a method for sending referral information provided in this embodiment of the disclosure;

[0088] Figure 4 A schematic diagram of a sector-shaped region provided for implementation of this disclosure;

[0089] Figure 5 A schematic diagram illustrating a gridded signal coverage area provided in an embodiment of this disclosure;

[0090] Figure 6 This is a schematic diagram illustrating the division of signal strength level zones according to an embodiment of the present disclosure;

[0091] Figure 7 This is a schematic diagram illustrating the relationship between a specified signal strength region and a corresponding boundary of a set signal strength, provided in an embodiment of this disclosure.

[0092] Figure 8 This is a schematic diagram illustrating the adjustment of antenna direction in a phased antenna array provided by the present invention.

[0093] Figure 9 This is a schematic diagram of the structure of a positioning service device provided in an embodiment of this disclosure. Detailed Implementation

[0094] This disclosure provides a method for sending promotional information and a location service device to solve the aforementioned technical problems existing in the prior art.

[0095] To better understand the above technical solutions, the technical solutions of this disclosure will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of this disclosure, rather than limitations thereof. In the absence of conflict, the embodiments of this disclosure and the technical features in the embodiments can be combined with each other.

[0096] In the embodiments provided in this disclosure, the location service device is mainly used in shopping malls to display information such as stores and products recommended to users on the screen, and transmit the displayed information on radio frequency signals to surrounding user terminals (such as mobile phones). Users can view the same content as displayed on the location service device, or even more content, through their user terminals.

[0097] Please see Figure 1 This diagram illustrates the signal strength of a positioning service device within its coverage area when there are no obstructions. When there are no obstructions within the coverage area of ​​the positioning service device, the signal attenuation is uniform, therefore the change in signal strength is also uniform.

[0098] However, due to the complexity of the indoor environment, such as the presence of obstructions from shelves, buildings (e.g., load-bearing columns), and the number of people, signal strength can vary even at the same distance from the positioning service device. Please refer to [link / reference needed]. Figure 2 This diagram illustrates the signal strength of a location service device provided in this embodiment when its signal coverage is obstructed by obstacles. This results in poor signal strength in some areas, causing user terminals to be unable to receive the radio frequency signal from the location service device, or to receive it intermittently, leading to a low delivery rate of the recommendation information pushed by the location service device. The delivery rate of the recommendation information is the ratio of the number of people who receive the recommendation information (since a user typically owns one user terminal, this can also be referred to as the number of user terminals) to the total number of people in the signal coverage area (total number of user terminals).

[0099] It should be noted that, in Figure 1 and Figure 2 A dashed line in the middle represents a signal strength of the same value.

[0100] Please refer to Figure 3 This disclosure provides a method for sending recommendation information, applied to a location service device. The processing procedure of this method is as follows.

[0101] Step 301: Receive feedback signals sent by each user terminal within the signal coverage area of ​​the positioning service device; wherein the feedback signals carry the first signal strength and the first signal strength of the radio frequency signal sent by the positioning service device received by the user terminal.

[0102] Receiving feedback signals from user terminals can be achieved in the following ways:

[0103] A radio frequency signal is sent to a user terminal within the signal coverage area, enabling the user terminal to determine the first signal strength and first signal direction of the received radio frequency signal, and to send it to the positioning service device in a corresponding feedback signal; the positioning service device receives the feedback signal from the user terminal carrying the first signal strength and first signal direction.

[0104] For example, with Figure 1 For example, the positioning service device sends radio frequency signals to user terminals within its signal coverage area, enabling each user terminal to detect the signal strength and signal direction of the received radio frequency signal (denoted as the first signal strength and the first signal direction), and send the first signal strength and the first signal direction in the feedback information to the positioning service device. After receiving the feedback signals sent by each user terminal, the positioning service device can determine the first signal strength and the first signal direction of the radio frequency signal actually received by each user terminal.

[0105] After receiving the feedback signals sent by each user terminal, steps 302-303 can be executed.

[0106] Step 302: Based on the first signal strength and first signal direction corresponding to each user terminal, determine the main area where user terminals are concentrated within the signal coverage area. In practical applications, the positioning service device can also determine the main area where user terminals are concentrated within its signal coverage area by detecting the signal strength and signal direction of the radio frequency signals transmitted by the user terminals.

[0107] Step 303: Adjust the signal transmission direction of the radio frequency signal to the direction of the main area, and transmit the promotional information; wherein, the promotional information is carried by the radio frequency signal.

[0108] Based on the first signal strength corresponding to each user terminal, the main area where user terminals are concentrated within the signal coverage range can be determined in the following ways:

[0109] Within the signal coverage area, the area is divided into multiple sector-shaped regions of equal arc, centered on the location of the positioning service device. User terminals whose first signal strength reaches a set strength threshold are identified as valid user terminals. The set strength threshold is the minimum signal strength at which a user terminal can actually receive radio frequency signals normally. Based on the total number of valid user terminals in each sector-shaped region and its adjacent sector-shaped regions within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center, a comprehensive feature value for each sector-shaped region is determined. The sector-shaped region with the largest comprehensive feature value among the multiple sector-shaped regions is identified as the main region.

[0110] Please see Figure 4 This is a schematic diagram illustrating the division of a sector-shaped region for implementation purposes. A non-circular curve represents a signal strength, and the signal strength gradually decreases from the location service device outwards. For example, the signal strength is strongest at the location of the location service device, and the signal strength is weakest at the outermost dashed line.

[0111] exist Figure 4 Centered on the location of the positioning service device, its signal coverage area is divided into 16 equally angular sector areas (i.e., sector 1 to sector 16), with an arc of 22.5°. The closer the user terminal is to the outermost dotted line, the weaker the received radio frequency signal (i.e., the lower the initial signal strength); the closer to the center (i.e., the positioning service device), the stronger the received radio frequency signal (i.e., the greater the initial signal strength). Assuming a strength threshold is set... Figure 4 The outermost dashed line corresponds to the signal strength. The user terminal sends the first signal strength of the detected radio frequency signal in the feedback information to the positioning service device. The positioning service device determines the first signal strength corresponding to each user terminal based on the received feedback information, and then identifies user terminals with first signal strength reaching a set threshold as valid user terminals. Figure 4 The user terminals within the outermost dotted line are considered valid user terminals. Then, based on the signal coverage area of ​​the positioning service device, the total number of valid user terminals in each sector and its adjacent sectors, the first signal strength, and the relative position with the positioning service device, the comprehensive characteristic value of each sector is determined. Sector 8, which has the largest comprehensive characteristic value among sector 1 to sector 16, is determined as the main sector. Subsequently, the signal transmission direction of the positioning service device's radio frequency signal is adjusted to the direction where the main sector is located for sending promotional information.

[0112] The implementation method used to determine the comprehensive eigenvalues ​​is as follows:

[0113] The total number of valid user terminals in each sector area is counted; the relative position corresponding to the environmental feature value of each valid user terminal is determined from the correspondence between the preset environmental feature value and the relative position, so as to determine the distance between each user terminal and the center; wherein, the environmental feature value includes the first signal strength and the corresponding first signal direction; for each sector area and its adjacent sector areas, the total number of valid user terminals in each area, the corresponding first signal strength and the distance are weighted and calculated to obtain the comprehensive feature value of each sector area.

[0114] The weighted calculation formula used to calculate the comprehensive characteristic value of any sector region includes:

[0115] ;

[0116] Among them, M i Let k be the comprehensive feature value of the i-th sector region. i Let k be the total number of valid user terminals in the i-th sector region. i+1 k represents the total number of valid user terminals in the (i+1)th sector adjacent to the ith sector. i-1 L represents the total number of valid user terminals in the (i-1)th sector adjacent to the i-th sector, where j is the j-th valid user terminal in the i-th sector. j This represents the distance between the j-th valid user terminal in the corresponding sector region and the center. Let i and j be the signal direction of the radio frequency signal received by the j-th valid user terminal in the corresponding sector area, where i and j are natural numbers, and i is less than or equal to the total number of sector areas within the signal coverage area, and j is less than or equal to the total number of valid user terminals in the corresponding sector area. i b i c i k in the i-th sector region i L j , The corresponding weighting coefficient, a i-1 b i-1 c i-1 k in the (i-1)th sector region i-1 L j α j The corresponding weighting coefficient, a i+1 b i+1 c i+1 k in the (i+1)th sector region i+1 L j α j The corresponding weighting coefficients.

[0117] The correspondence between preset environmental feature values ​​and relative positions is obtained through the following methods:

[0118] The signal coverage area of ​​the positioning service device is divided into multiple grid zones. The signal strength and direction of the radio frequency signal received by the user terminal in each grid zone are detected (for ease of distinction, these are referred to as second signal strength and second signal direction), and these are determined as the network feature values ​​for the corresponding grid zone. Then, the relative position of each grid zone (to the positioning service device) is associated with the corresponding network feature value to obtain a preset correspondence between environmental feature values ​​and relative positions. This correspondence can be stored in a database or at a specified location.

[0119] Please see Figure 5 This is a schematic diagram of a gridded signal coverage area provided in an embodiment of this disclosure.

[0120] by Figure 5 Taking three grid areas A, B, and C as an example, the user terminal receives the radio frequency signal from the positioning service device in grid area A, detects the received signal strength (referred to as the second signal strength A to distinguish it from the signal strength of other grid areas), and determines the second signal direction A of the received radio frequency signal (referred to as the second signal direction to distinguish it from the signal direction of other grid areas). The second signal strength A and the second signal direction A are determined as the environmental characteristic value A of grid area A. Similarly, the environmental characteristic values ​​of other grid areas can be obtained. For example, the environmental characteristic value B of grid area B is composed of the second signal strength B and the second signal direction C, and the environmental characteristic value of grid area C is composed of the second signal strength C and the second signal direction C.

[0121] Next, by associating the relative position of grid region A with the environmental feature value A, an element in the predefined correspondence between environmental feature values ​​and positions can be formed. For example, suppose the relative position of grid region A is denoted as (x... A ,y A Let the second signal strength A and the second signal direction A be denoted as λ respectively. A1 , λ A1 The environmental characteristic value A can be denoted as {λ} A1 , λ A1 The relative position of grid region A can be associated with the environmental feature value A, which can be denoted as (x A ,y A )={λ A1 , λ A1 The relative positions of other grid areas are associated with their corresponding environmental feature values, and this process is similar and will not be repeated here. After all grid areas are associated with their corresponding environmental feature values, the correspondence between the preset environmental feature values ​​and their relative positions can be obtained.

[0122] The environmental characteristics of the grid area may also include other characteristics such as user activity.

[0123] Location service devices can transmit radio frequency (RF) signals using phased array antennas. When adjusting the signal transmission direction to align with the main area for sending promotional information, the rated power of the phased array antenna in the location service device can be used. Alternatively, the transmission power of the location service device can be adjusted to conserve power and reduce RF parameter (e.g., vector-to-vector) errors. This can be achieved through the following methods:

[0124] The signal coverage area is divided into multiple signal strength level zones; the required power of the radio frequency signal when the first signal strength of the user terminal reaches the set strength is determined on the outer boundary of the designated signal strength level zone; wherein, the designated signal strength level zone is a designated signal level area among multiple signal level zones, and the outer boundary is the boundary of the designated signal strength level zone that is far away from the positioning service device; the smaller of the required power and the rated power of the phased antenna in the positioning service device is determined as the first transmission power of the radio frequency signal; in the direction where the main area is located, the radio frequency signal carrying the promotion information is transmitted at the first transmission power.

[0125] The designated signal strength level area mentioned above can be determined based on actual experience. For example, by analyzing the distribution of the number of users within the signal coverage area of ​​the positioning service equipment over a month, a quarter, or half a year, it can be determined that most users are distributed within the outer boundary of a signal strength level area, and that signal strength level area is then determined as the designated signal strength level area. Alternatively, the designated signal strength level area can be determined in real time based on the distribution of users (or user terminals) as statistically analyzed on-site. No specific limitation is imposed.

[0126] Please see Figure 6 This is a schematic diagram illustrating the division of signal strength level zones according to an embodiment of this disclosure. Figure 6 The diagram shows four signal strength levels, 0-3. The strength of the radio frequency signal received by the user terminal from the positioning service device decreases sequentially from signal level 0 to signal level 3. Figure 6 As can be seen, each signal level zone includes two boundaries: one is the boundary closest to the positioning service device, which is the boundary with the signal level zone of the next higher level, and the other is the boundary furthest from the positioning service device, which is the boundary with the signal level zone of the next lower level.

[0127] For a user terminal to receive radio frequency (RF) signals from a location service device even at the outer boundary of a designated signal strength level zone, the initial signal strength of the RF signal received by the user terminal at that boundary must reach a set strength. The location service device determines the required power when transmitting RF signals based on this set strength. However, the required power may be affected by factors such as the number of user terminals and obstacles, potentially exceeding the rated power of the phased array antenna in the location service device. Therefore, the smaller of the required power and the rated power needs to be selected as the initial transmission power actually used by the location service device to transmit RF signals. This allows the phased array antenna in the location service device to transmit RF signals carrying promotional information at the initial transmission power in the direction of the main area. This enables the location service device to push promotional information to the maximum number of users while conserving transmission power.

[0128] One possible implementation method for determining the required power of the radio frequency signal when the received signal strength of a user terminal reaches a set strength at the outer boundary of a designated signal strength level zone can be achieved in the following ways:

[0129] The total number of user terminals receiving radio frequency signals between the inner boundary of a specified signal strength area and the corresponding boundary of a set signal strength is determined; wherein, the inner boundary is the boundary of the specified signal strength area closest to the positioning service device; based on the total number of user terminals receiving radio frequency signals between the inner boundary of the specified signal strength area and the corresponding boundary of the set signal strength, and the third signal strength of the user terminals at the outer boundary, the second transmission power of the user terminals at the outer boundary is determined; the product of the second transmission power and the weighted value of the transmission power is determined as the required power.

[0130] The formula used to determine the second transmit power of the user terminal at the outer boundary includes:

[0131] Q s =C s ×N s +d s ×а s ;

[0132] Among them, Q s C represents the second transmit power of the user terminal at the outer boundary. s C is the weighting coefficient. s The unit is power per person, N s d represents the total number of user terminals that receive radio frequency signals between the inner boundary of a specified signal strength zone and the corresponding boundary of a set signal strength zone. s α is the weighting coefficient for signal strength. s Specify the signal strength.

[0133] Please see Figure 7This is a schematic diagram illustrating the relationship between a specified signal strength region and a corresponding boundary of a set signal strength, provided in an embodiment of this disclosure.

[0134] exist Figure 7 In this context, m represents the boundary corresponding to the set signal strength, the designated signal strength level area is signal strength level area 2, s represents the outer boundary of the designated signal strength level area, and s-1 represents the inner boundary of the designated signal strength level area. Based on the first signal strength carried in the feedback information sent by the user terminal, the total number of user terminals (denoted as N) receiving radio frequency signals between the inner boundary s-1 of the designated signal strength level area and the boundary m corresponding to the set signal strength (denoted as (s-1, m)) can be determined. s Then, the second transmission power (denoted as Q) is calculated using the formula for calculating the second transmission power mentioned above. s Assuming the expected power corresponding to the outer boundary s of a specified signal strength level zone is Ps, and the transmit power weighting value is Q0, then Ps = Q0 × Q s .

[0135] The location service device uses a phased antenna array to control the transmission direction and power of the radio frequency signal carrying the promotion information. By changing the angle of each antenna in the phased antenna array and the transmission power of each antenna, the transmission direction and power of the radio frequency signal carrying the promotion information are controlled.

[0136] Please see Figure 8 This is a schematic diagram illustrating the adjustment of antenna direction in a phased antenna array provided by the present invention. Figure 8 In this context, a phased antenna array includes n antennas (r0~r...). n-1 By adjusting the orientation of each antenna in three-dimensional space, that is, adjusting the angle between the antenna and the X-axis, Y-axis, and Z-axis, the orientation of the antenna is adjusted so that the vector sum of these n antennas (one antenna to one vector) points to the transmission direction of the radio frequency signal carrying the promotion information.

[0137] Based on the same inventive concept, one embodiment of this disclosure provides a location service device. For details on the method for sending referral information using this location service device, please refer to the description in the method embodiment section. Repeated descriptions will not be repeated here. Figure 9 The location service device includes:

[0138] The receiving unit 901 is used to receive feedback signals sent by each user terminal within the signal coverage area of ​​the positioning service device; wherein the feedback signal carries a first signal strength and a first signal direction of the radio frequency signal sent by the positioning service device received by the user terminal;

[0139] The determining unit 902 is used to determine the main area where the user terminals are concentrated within the signal coverage area based on the first signal strength and the first signal direction corresponding to each user terminal.

[0140] The transmitting unit 903 is used to adjust the signal transmission direction of the radio frequency signal to the direction where the main area is located, and to transmit the promotional information; wherein the promotional information is carried by the radio frequency signal.

[0141] In one possible implementation, the receiving unit 901 is used for:

[0142] The radio frequency signal is sent to a user terminal within the signal coverage area, enabling the user terminal to determine the first signal strength of the received radio frequency signal;

[0143] The user terminal receives a feedback signal carrying the first signal strength.

[0144] In one possible implementation, the determining unit 902 is used to:

[0145] Within the signal coverage area, the area is divided into multiple fan-shaped regions of equal arc, centered on the location of the positioning service device.

[0146] A user terminal whose first signal strength reaches a set strength threshold is determined as a valid user terminal; wherein, the set strength threshold is the minimum signal strength at which the user terminal can actually receive the radio frequency signal normally;

[0147] Based on the total number of valid user terminals contained in each sector and its adjacent sector within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center, a comprehensive feature value for each sector is determined.

[0148] The sector region with the largest comprehensive feature value among the multiple sector regions is determined as the main region.

[0149] In one possible implementation, the determining unit 902 is further configured to:

[0150] Centered on the location of the positioning service device, the signal coverage area is divided into 16 sector areas.

[0151] In one possible implementation, the determining unit 902 is further configured to:

[0152] Count the total number of valid user terminals contained in each of the aforementioned sector areas;

[0153] From the correspondence between preset environmental feature values ​​and relative positions, the relative position corresponding to the environmental feature value of each effective user terminal is determined, so as to determine the distance between each user terminal and the center; wherein, the environmental feature value includes the first signal strength and the corresponding first signal direction;

[0154] For each sector and its adjacent sector, the total number of valid user terminals contained in each sector, the corresponding first signal strength, and the distance are weighted and calculated to obtain the comprehensive feature value of each sector.

[0155] In one possible implementation, the determining unit 902 is further configured to:

[0156] The signal coverage area is divided into multiple grid areas;

[0157] The second signal strength and second signal direction of the radio frequency signal received by the user terminal in each of the grid areas are detected and determined as the network characteristic value of the corresponding network area;

[0158] The location of each grid area is associated with its corresponding network feature value to obtain the correspondence between the preset environmental feature value and the location.

[0159] One possible implementation is that the formula for the weighted calculation includes:

[0160] ;

[0161] Among them, M i Let k be the comprehensive feature value of the i-th sector region. i k represents the total number of valid user terminals in the i-th sector region. i+1 k represents the total number of valid user terminals in the (i+1)th sector adjacent to the i-th sector. i-1 L represents the total number of valid user terminals in the (i-1)th sector adjacent to the i-th sector, where j is the j-th valid user terminal in the i-th sector. j The distance between the j-th valid user terminal in the corresponding sector region and the center is given. The signal direction in which the radio frequency signal is received by the j-th valid user terminal within the corresponding sector area, where i and j are natural numbers, and i is less than or equal to the total number of the sector areas within the signal coverage area, and j is less than or equal to the total number of valid user terminals within the corresponding sector area, a i b i c i k in the i-th sector region i L j , The corresponding weighting coefficient, a i-1 b i-1 c i-1 k in the (i-1)th sector region i-1 L j α j The corresponding weighting coefficient, a i+1 b i+1 c i+1 k in the (i+1)th sector region i+1 L j α j The corresponding weighting coefficients.

[0162] In one possible implementation, the transmitting unit 903 is further configured to:

[0163] The signal coverage area is divided into multiple signal strength level zones;

[0164] The required power of the radio frequency signal when the first signal strength of the user terminal reaches a set strength is determined on the outer boundary of a designated signal strength level area; wherein, the designated signal strength level area is a designated signal level area among a plurality of signal level areas, and the outer boundary is the boundary of the designated signal strength level area that is far away from the positioning service device;

[0165] The smaller of the expected power and the rated power of the phased antenna in the positioning service device is determined as the first transmission power for transmitting the radio frequency signal;

[0166] In the direction of the main area, the radio frequency signal carrying the promotional information is transmitted at the first transmission power.

[0167] In one possible implementation, the transmitting unit 903 is further configured to:

[0168] The total number of user terminals receiving the radio frequency signal is determined between the inner boundary of the designated signal strength level area and the boundary corresponding to the set signal strength; wherein, the inner boundary is the boundary of the designated signal strength area closest to the positioning service device;

[0169] Based on the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength, and the third signal strength of the user terminals at the outer boundary, the second transmission power of the user terminals at the outer boundary is determined.

[0170] The product of the second transmission power and the weighted value of the transmission power is determined as the expected power.

[0171] One possible implementation involves determining the formula used to determine the second transmission power of the user terminal at the outer boundary, including:

[0172] Q s =C s ×N s +d s ×а s ;

[0173] Among them, Q s C is the second transmission power of the user terminal at the outer boundary. s As the weighting coefficient, the C s The unit is power per person, N s d is the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength. s α is the weighting coefficient for signal strength. s The specified signal strength.

[0174] In one possible implementation, the positioning service device uses a phased antenna array to control the transmission direction and transmission power of the radio frequency signal carrying the recommendation information. By changing the angle of each antenna in the phased antenna array and the transmission power of each antenna, the transmission direction and transmission power of the radio frequency signal carrying the recommendation information are controlled.

[0175] Based on the same inventive concept, this disclosure provides a location service device, including: at least one processor, and

[0176] Memory connected to the at least one processor;

[0177] The memory stores instructions that can be executed by the at least one processor, and the at least one processor executes the instructions stored in the memory to perform the recommendation information sending method as described above.

[0178] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, embodiments of this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of this disclosure 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, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0179] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. 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, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0180] 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 a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0181] 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.

[0182] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A method for sending recommendation information, applied to a location service device, wherein, The method includes: The system receives feedback signals sent by each user terminal within the signal coverage area of ​​the positioning service device; wherein the feedback signal carries a first signal strength and a first signal direction of the radio frequency signal sent by the positioning service device received by the user terminal; the signal coverage area is a 360° range centered on the positioning service device; Based on the first signal strength and first signal direction corresponding to each user terminal, determine the main area where the user terminals are concentrated within the signal coverage area; The signal transmission direction of the radio frequency signal is adjusted to the direction where the main area is located to transmit the promotional information; wherein, the promotional information is carried by the radio frequency signal; Specifically, based on the first signal strength corresponding to each user terminal, the main area where the user terminals are concentrated within the signal coverage range is determined, including: Within a 360° signal coverage area centered on the positioning service device, the 360° signal coverage area is divided into multiple fan-shaped areas of equal arc, with the location of the positioning service device as the center. A user terminal whose first signal strength reaches a set strength threshold is determined as a valid user terminal; wherein, the set strength threshold is the minimum signal strength at which the user terminal can actually receive the radio frequency signal normally; Based on the total number of valid user terminals contained in each sector and its adjacent sector within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center, a comprehensive feature value for each sector is determined. The sector region with the largest comprehensive feature value among the multiple sector regions is determined as the main region; Specifically, based on the total number of valid user terminals contained in each sector and its adjacent sector within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center, a comprehensive characteristic value for each sector is determined, including: Count the total number of valid user terminals contained in each of the aforementioned sector areas; From the correspondence between preset environmental feature values ​​and relative positions, the relative position corresponding to the environmental feature value of each effective user terminal is determined, so as to determine the distance between each user terminal and the center; wherein, the environmental feature value includes the first signal strength and the corresponding first signal direction; For each of the aforementioned sector regions and its adjacent sector regions, a weighted calculation is performed on the total number of valid user terminals contained in each region, the corresponding first signal strength, and the distance to obtain the comprehensive feature value of each of the aforementioned sector regions; The method for determining the correspondence between preset environmental feature values ​​and locations includes: The signal coverage area is divided into multiple grid areas; The second signal strength and second signal direction of the radio frequency signal received by the user terminal in each of the grid areas are detected and determined as the network characteristic value of the corresponding grid area; the environmental characteristic value of the grid area also includes user activity. The location of each grid area is associated with its corresponding network feature value to obtain the correspondence between the preset environmental feature value and the location.

2. The method as described in claim 1, wherein, Receiving feedback signals sent by each user terminal within the signal coverage area of ​​the positioning service device, including: The radio frequency signal is sent to a user terminal within the signal coverage area, enabling the user terminal to determine the first signal strength of the received radio frequency signal; The user terminal receives a feedback signal carrying the first signal strength.

3. The method as described in claim 1, wherein, Centered on the location of the positioning service device, the signal coverage area is divided into multiple fan-shaped regions of equal arc, including: Centered on the location of the positioning service device, the signal coverage area is divided into 16 sector areas.

4. The method of claim 1, wherein, The formula for weighted calculation includes: ； Among them, M i Let k be the comprehensive feature value of the i-th sector region. i k represents the total number of valid user terminals in the i-th sector region. i+1 k represents the total number of valid user terminals in the (i+1)th sector adjacent to the i-th sector. i-1 L represents the total number of valid user terminals in the (i-1)th sector adjacent to the i-th sector, where j is the j-th valid user terminal in the i-th sector. j The distance between the j-th valid user terminal in the corresponding sector region and the center is given. The signal direction in which the radio frequency signal is received by the j-th valid user terminal within the corresponding sector area, where i and j are natural numbers, and i is less than or equal to the total number of the sector areas within the signal coverage area, and j is less than or equal to the total number of valid user terminals within the corresponding sector area, a i b i c i k in the i-th sector region i L j , The corresponding weighting coefficient, a i-1 b i-1 c i-1 k in the (i-1)th sector region i-1 L j α j The corresponding weighting coefficient, a i+1 b i+1 c i+1 k in the (i+1)th sector region i+1 L j α j The corresponding weighting coefficients.

5. The method according to any one of claims 1-4, wherein, Adjusting the signal transmission direction of the radio frequency signal to the direction of the main area, and transmitting promotional information, including: The signal coverage area is divided into multiple signal strength level zones; The required power of the radio frequency signal when the first signal strength of the user terminal reaches a set strength is determined on the outer boundary of a designated signal strength level area; wherein, the designated signal strength level area is a designated signal level area among a plurality of signal level areas, and the outer boundary is the boundary of the designated signal strength level area that is far away from the positioning service device; The smaller of the expected power and the rated power of the phased antenna in the positioning service device is determined as the first transmission power for transmitting the radio frequency signal; In the direction of the main area, the radio frequency signal carrying the promotional information is transmitted at the first transmission power.

6. The method of claim 5, wherein, Determining the required power of the radio frequency signal when the received signal strength of the user terminal reaches a set strength at the outer boundary of a specified signal strength level zone includes: The total number of user terminals receiving the radio frequency signal is determined between the inner boundary of the designated signal strength level area and the boundary corresponding to the set signal strength; wherein, the inner boundary is the boundary of the designated signal strength area closest to the positioning service device; Based on the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength, and the third signal strength of the user terminals at the outer boundary, the second transmission power of the user terminals at the outer boundary is determined. The product of the second transmission power and the weighted value of the transmission power is determined as the expected power.

7. The method of claim 6, wherein, The formula used to determine the second transmission power of the user terminal at the outer boundary includes: Q s =C s ×N s +d s ×а s ; Among them, Q s C is the second transmission power of the user terminal at the outer boundary. s As the weighting coefficient, the C s The unit is power per person, N s d is the total number of user terminals that receive the radio frequency signal between the inner boundary and the boundary corresponding to the set signal strength. s α is the weighting coefficient for signal strength. s The specified signal strength.

8. The method of claim 5, wherein, The positioning service device uses a phased antenna array to control the transmission direction and transmission power of the radio frequency signal carrying the recommendation information. By changing the angle of each antenna in the phased antenna array and the transmission power of each antenna, the transmission direction and transmission power of the radio frequency signal carrying the recommendation information are controlled.

9. A location service device, wherein, include: A receiving unit is configured to receive feedback signals sent by each user terminal within the signal coverage area of ​​the positioning service device; wherein the feedback signal carries a first signal strength of the radio frequency signal sent by the positioning service device received by the user terminal; the signal coverage area is a 360° range centered on the positioning service device; The determining unit is configured to determine the main area where the user terminals are concentrated within the signal coverage area based on the first signal strength corresponding to each user terminal. A transmitting unit is used to adjust the signal transmission direction of the radio frequency signal to the direction where the main area is located, and to transmit the promotional information; wherein the promotional information is carried by the radio frequency signal; The determining unit is further configured to: divide the 360° signal coverage area centered on the positioning service device into multiple equal-arc sector regions centered on the location of the positioning service device; determine user terminals whose first signal strength reaches a set strength threshold as valid user terminals; wherein the set strength threshold is the minimum signal strength at which the user terminal can actually receive the radio frequency signal normally; determine the comprehensive feature value of each sector region based on the total number of valid user terminals contained in each sector region and its adjacent sector regions within the signal coverage area, the first signal strength of each valid user terminal, and the relative position of each valid user terminal to the center; and determine the sector region with the largest comprehensive feature value among the multiple sector regions as the main region; The determining unit is further configured to: count the total number of valid user terminals contained in each of the sector areas; determine the relative position corresponding to the environmental feature value of each valid user terminal from the correspondence between preset environmental feature values ​​and relative positions, so as to determine the distance between each user terminal and the center; wherein the environmental feature value includes the first signal strength and the corresponding first signal direction; perform weighted calculation on the total number of valid user terminals contained in each sector area and its adjacent sector areas, the corresponding first signal strength and the distance, to obtain the comprehensive feature value of each sector area; wherein the method for determining the correspondence between preset environmental feature values ​​and positions includes: dividing the signal coverage area into multiple grid areas; detecting the second signal strength and the second signal direction of the radio frequency signal received by the user terminal in each grid area, and determining them as the network feature value of the corresponding grid area; the environmental feature value of the grid area also includes user activity; associating the position of each grid area with the corresponding network feature value to obtain the correspondence between the preset environmental feature value and the position.

10. A location service device, wherein, include: At least one processor, and Memory connected to the at least one processor; The memory stores instructions executable by the at least one processor, which executes the method as described in any one of claims 1-8 by executing the instructions stored in the memory.

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