Head end work parameter acquisition method and device and storage medium

Abstract

The invention provides a head end work parameter obtaining method and device and a storage medium, and belongs to the technical field of communication, and the method comprises the steps: when a network side senses a target and obtains an LCS coordinate, sending a GCS activation signaling containing a head end level to a GCS auxiliary system; the network side waits for the GCS auxiliary system to respond to the GCS activation signaling, GCS coordinate information is fed back when the GCS auxiliary system responds, and the GCS coordinate information is used for calculating head end work parameters. According to the method, the GCS coordinate information is accurately obtained through interaction between the network side and the GCS auxiliary system, the head end work parameters are calculated according to the GCS coordinates, and the problem that the LCS coordinates and the GCS coordinates are inconsistent in the aspects of frequency, period, starting time and duration can be effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a head-end working parameter acquisition method and device and a storage medium. BACKGROUND

[0002] In a wireless sensing system, the head-end is a radio frequency transceiver device. Wireless positioning technology is divided into active and passive types. The active type relies on terminal transmitted signals (such as global navigation satellite system GNSS and WiFi) for positioning. The passive type does not rely on terminals for positioning. For example, wireless sensing is a positioning method based on reflection of head-end transmitted signals.

[0003] When multiple head-ends are networked, a global coordinate system (GCS) needs to be constructed and the head-end attitude needs to be calibrated, that is, a local coordinate system (LCS) is converted into a GCS coordinate system (an earth-centered rectangular coordinate system can be constructed outdoors to ensure the uniqueness of the target position) through a rotation matrix. The key is to obtain the GCS coordinates and attitude parameters (i.e., working parameters) of the head-end.

[0004] The existing positioning scheme integrates GNSS sensors and attitude sensors in the head-end. Although this scheme can effectively obtain the target position, on the one hand, it has high cost, and the positioning accuracy will decrease in areas where GNSS signals are limited (such as urban canyons and indoors). On the other hand, the working parameter fitting needs to rely on LCS and GCS information. In addition, the method of relying on the GCS and LCS coordinates of the target to fit the working parameters cannot be used in classified scenarios or terminals that do not support communication. SUMMARY

[0005] The present application provides a head-end working parameter acquisition method and device and a storage medium, aiming to solve the problem of how to obtain head-end working parameters.

[0006] In a first aspect, the present application provides a head-end working parameter acquisition method applied to a network side, wherein the network side includes at least one head-end, and the at least one head-end includes at least one pure sensing head-end and / or at least one sensing and communication head-end. Each head-end is separately integrated with a GCS auxiliary system, or multiple head-ends are collectively integrated with a GCS auxiliary system as a group.

[0007] The method includes the following steps:

[0008] When the network side senses a target and obtains LCS coordinates, GCS activation signaling containing head-end level is sent to the GCS auxiliary system.

[0009] The network side waits for the GCS auxiliary system to respond to the GCS activation signaling. When the GCS auxiliary system responds, GCS coordinate information is fed back, which is used to calculate the head-end working parameters.

[0010] In some embodiments, the network side comprises a LCS computing unit and a decision unit;

[0011] When the network side perceives the target and obtains the LCS coordinates, the GCS activation signaling is sent to the GCS auxiliary system, which comprises:

[0012] The LCS computing unit calculates the LCS coordinates of the terminal, generates a terminal ID, a head ID, LCS coordinates, and a LCS confidence level, and passes them to the decision unit;

[0013] The decision unit determines whether the LCS coordinates of the terminal under the head ID are reliable according to the LCS confidence level;

[0014] If the LCS coordinates are reliable, the decision unit sends the head-level GCS activation signaling to the GCS auxiliary system; wherein the GCS activation signaling comprises one or more combinations of GCS reporting period, reporting start time slot number, and GCS reporting accuracy.

[0015] In some embodiments, the network side waits for the GCS auxiliary system to respond to the GCS activation signaling, and the GCS coordinate information feedback by the GCS auxiliary system when responding comprises:

[0016] After the GCS auxiliary system receives the GCS activation signaling, it obtains the GCS coordinate information of the terminal through the GCS auxiliary receiving device, which comprises a head ID, GCS coordinates, a terminal ID, and a timestamp.

[0017] In some embodiments, the network side further comprises a position matching unit, a work parameter computing unit, and a GCS computing unit;

[0018] The method further comprises:

[0019] The network side receives the GCS coordinate information from the terminal feedback by the GCS auxiliary system, extracts the head ID, GCS coordinates, terminal ID, and timestamp information therefrom, and passes them to the position matching unit;

[0020] The position matching unit performs matching operations on the LCS coordinates and the GCS coordinates;

[0021] The work parameter computing unit receives the matched coordinate information to calculate the work parameter coefficients of each head, and sends the calculated work parameter coefficients to the GCS computing unit, which are used to convert the LCS coordinates of each terminal into GCS coordinates.

[0022] In some embodiments, the method further comprises:

[0023] If the confidence levels of the LCS coordinates received by the decision unit continuously for multiple times are all higher than a preset threshold, it is determined that the LCS coordinates are reliable.

[0024] In some embodiments, the method further comprises:

[0025] outputting a GCS deactivation indication when the decision unit determines that the LCS coordinates are not reliable;

[0026] generating, by the decision unit, GCS deactivation signaling according to the GCS deactivation indication, and sending the GCS deactivation signaling to the GCS assistance system, so that the GCS assistance system stops reporting GCS coordinate information and feeds back GCS deactivation receipt information; and

[0027] sending, by the decision unit, the GCS deactivation signaling to the position matching unit, so that the position matching unit stops performing position coordinate matching for the corresponding terminal.

[0028] In some embodiments, the signaling fed back by the GCS assistance system at the network side comprises:

[0029] The GCS system of the GCS assistance system reads the time delay difference reported by the GCS system and indicates the unit of the time delay difference, which is a time slot by default.

[0030] In some embodiments, the matching operation of the position matching unit on the LCS coordinates and the GCS coordinates comprises:

[0031] According to the mode of the sensing time slot and the communication time slot, the communication frame ratio, the sensing frame period, the GCS reporting start time slot number, and the period indication, all the LCS coordinates and the GCS coordinates to be matched are processed to calculate the time slot number interval between each LCS coordinate and the GCS coordinate, from which the coordinate combination with the smallest time slot number interval is selected as the preliminary screening result.

[0032] After obtaining the time delay value in the GCS coordinate information fed back by the GCS assistance system, the position matching unit subtracts the time delay value from the GCS time slot number in the preliminary screening result to obtain the corrected GCS coordinate.

[0033] When the LCS calculation unit outputs the LCS calculation time delay value, the position matching unit subtracts the LCS calculation time delay value from the LCS time slot number of the LCS coordinate in the preliminary screening result to obtain the corrected LCS coordinate information.

[0034] Performing a matching operation based on the corrected GCS coordinate and the LCS coordinate.

[0035] In some embodiments, the at least one head end comprises a plurality of pure sensing head ends.

[0036] The method further comprises:

[0037] According to the head-end coverage, GCS auxiliary system deployment interval and coverage area grouping; or according to the head-end device manufacturer type grouping; each group is integrated with a GCS auxiliary system.

[0038] In some embodiments, the method further comprises:

[0039] The decision unit sends GCS activation and deactivation signaling related to the head-end level and the terminal level through an interface;

[0040] The decision unit sends head-end level and GCS auxiliary system ID parameters containing the correspondence between each head-end ID and GCS auxiliary system ID through an interface;

[0041] After receiving the GCS activation signaling, the GCS auxiliary system receives the target feedback GCS coordinate information using the receiving device, and transmits the head-end level, terminal level and GCS information to the matching unit;

[0042] When the GCS auxiliary system receives the GCS deactivation signaling, it stops receiving GCS coordinate information and feeds back to the decision unit that it has received the deactivation signaling.

[0043] In a second aspect, the present application also provides a head-end parameter acquisition device applied to a network side, wherein the network side includes at least one head-end, and the at least one head-end includes at least one pure perception head-end and / or at least one general perception head-end, each head-end is integrated with a GCS auxiliary system, or multiple head-ends are integrated with a GCS auxiliary system as a group;

[0044] The device includes:

[0045] The sending module is configured to send GCS activation signaling containing the head-end level to the GCS auxiliary system when the network side perceives the target and acquires the LCS coordinate;

[0046] The receiving module is configured to wait for the GCS auxiliary system to respond to the GCS activation signaling at the network side, and the GCS auxiliary system feeds back GCS coordinate information when responding, wherein the GCS coordinate information is used to calculate the head-end parameter.

[0047] In a third aspect, the present application also provides a processor readable storage medium, wherein the processor readable storage medium stores a computer program, and the computer program is used to make the processor execute the head-end parameter acquisition method of the first aspect.

[0048] The head-end working parameter acquisition method, device and storage medium provided in the application aim to solve the problem of how to acquire the head-end working parameter. In the head-end working parameter acquisition method, when the network side perceives the target and acquires the LCS coordinate, the head-end level GCS activation signaling containing activation message is sent to the GCS auxiliary system, and then the GCS auxiliary system is waited for response and feedback of the GCS coordinate information used for calculating the head-end working parameter.

[0049] Therefore, the GCS coordinate information is accurately acquired through the interaction between the network side and the GCS auxiliary system, the head-end working parameter is calculated according to the GCS coordinate, and the problem of inconsistency of the LCS coordinate and the GCS coordinate in frequency, period, starting time and duration can be effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0051] Figure 1 is a schematic diagram of a local coordinate system and a global coordinate system in an indoor scene;

[0052] Figure 2 is a flowchart of the head-end working parameter acquisition method provided in the application;

[0053] Figure 3 is a schematic diagram of the network side provided in the embodiments of the application;

[0054] Figure 4 is a structural block diagram of the head-end working parameter acquisition device provided in the application. DETAILED DESCRIPTION

[0055] In the embodiments of the application, the term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects. In the embodiments of the application, the term "multiple" means two or more, and other quantifiers are similar.

[0056] The technical solutions in the embodiments of the application will be described clearly and completely in the embodiments of the application combined with the drawings. Obviously, the described embodiments are only some of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0057] To solve the problem of how to obtain the head-end working parameter, the application provides a head-end working parameter obtaining method, device and storage medium. The method solves the problem of head-end working parameter obtaining by integrating a GCS auxiliary system at each head-end or multiple head-ends. When the network side perceives the target and obtains the LCS coordinate, an activation message containing head-end level GCS activation signaling is sent to the GCS auxiliary system, and then the GCS auxiliary system is waited for response and feedback of GCS coordinate information used for calculating the head-end working parameter.

[0058] When the head-end working parameter is calculated based on the GCS coordinate information, the inconsistency problem of the LCS coordinate and the GCS coordinate in frequency, period, starting time and duration can be effectively solved. Specifically, in terms of frequency, the GCS auxiliary system reports the GCS coordinate according to the information provided by the network side, ensuring the frequency consistency of the LCS and GCS coordinate information obtained by the network side location matching unit; for the period, the GCS auxiliary system analyzes the related parameters in the GCS coordinate information, and combines the clock information of itself to report the GCS coordinate according to the specified period; in terms of starting time, the network side uses the GCS reading and reporting time delay difference reported by the GCS auxiliary system and the LCS calculation time delay difference output by the LCS coordinate calculation unit to accurately match the corresponding relationship of the starting time of the LCS coordinate and the GCS coordinate, thereby solving the inconsistency of the starting time; for the duration, the GCS auxiliary system ensures the consistency of the duration reported by the GCS and the LCS duration according to the activation signaling and deactivation signaling sent by the network side, thereby solving the inconsistency problem of the LCS coordinate and the GCS coordinate when calculating the head-end working parameter.

[0059] The application can be applied to wireless perception scenarios, wireless communication and perception scenarios or hybrid networking scenarios. Wireless perception is to send a perception signal from a perception head-end by using wireless technology, and the signal is reflected back to the perception head-end through the wireless air interface channel to achieve obstacle detection. The head-end, which can also be called a remote radio unit (RRU), a remote radio head (RRH) or a radio unit (RU), is a radio frequency transmitting and receiving device, and the perception head-end is a head-end device supporting perception signal transmission and reception. Wireless communication and perception is to send a perception signal or a communication signal at a communication and perception head-end by using wireless technology. The communication signal is sent to a terminal device through an air interface channel, and the wireless signal sent by the terminal device is received and processed by the communication and perception head-end through the wireless channel. The communication signal and the perception signal can be multiplexed by time division, frequency division, space division and the like. The communication and perception head-end is a head-end device supporting perception signal and communication signal transmission and reception. Hybrid networking means that there are communication head-ends, perception head-ends and communication and perception head-ends in the network.

[0060] Under the architecture of the inter-sensing networking, the local coordinate position (i.e., LCS coordinate) of each sensing target can be obtained through the wireless sensing capability. To ensure that the global coordinate position (i.e., GCS coordinate) of each detection target can be obtained, the work parameter information of each headend (including RRH / remote radio unit, hereinafter referred to as headend) needs to be obtained, for example, the GPS coordinate value and attitude information (down angle, direction angle, etc.) of the headend. The process of obtaining the work parameter information is defined as the work parameter calibration of the headend.

[0061] In the work parameter acquisition method of the headend provided in the present application, the GPS activation and GPS deactivation information of the headend are carried in the interface to control the GCS auxiliary system to report the GPS information, so as to realize the calibration operation of the work parameter on the network side.

[0062] Wireless systems can realize positioning of targets based on wireless positioning technology, which can be divided into active positioning and passive positioning. Active positioning is a technology that relies on terminal-side transmitted signals for positioning, such as global navigation satellite system (GNSS)-based positioning, WiFi signal-based positioning, long term evolution (LTE) signal-based positioning, new radio (NR) signal-based positioning, ultra-wideband (UWB) signal-based positioning, and radio frequency identification (RFID)-based positioning, etc., all of which belong to the category of active positioning technology. Passive positioning technology does not rely on terminals for positioning. The principle of this technology is that the headend transmits wireless signals, which propagate through the wireless air interface channel, are reflected back to the headend after encountering obstacles, and then the relevant data is processed on the network side of the positioning system to obtain the position information of the target. For example, the wireless sensing system is a typical passive positioning system; and the NR positioning technology is a typical active positioning technology.

[0063] Whether it is active positioning or passive positioning, both face the problem of how to uniquely represent the position of the target. In a single-headend networking environment, the position of the target can be uniquely represented by using (x, y, z) in a coordinate system. The usual way is to construct a coordinate system with the headend as the initial coordinate origin, the normal line of the headend as the z-axis, and the panel of the headend as the xoy plane. In this coordinate system, the coordinate position of any target can be represented. This coordinate system is also called the local coordinate system (LCS coordinate system). However, in the case of multi-headend networking, only a unified coordinate system can uniquely represent the position of the target.

[0064] As Figure 1As shown, in a typical indoor scene, there are multiple head ends, and the installation manners of these head ends are different, some of which are ceiling-mounted, and some of which are side-mounted. Due to the difference in the posture of each head end during installation, the position coordinates of the same target obtained relative to different head ends are also different. In order to uniquely determine the position of the target, a unified coordinate system needs to be constructed, which is called a global coordinate system (GCS coordinate system). In addition, the installation posture information of the head end also needs to be mastered in order to realize the conversion between the local coordinate and the global coordinate. For the posture of the head end, the following mathematical symbols can be used to represent it: the angle α of rotation along the x-axis, the angle β of rotation along the z-axis, and the angle γ of rotation along the y-axis. In this way, when converting the LCS coordinate system into the GCS coordinate system, the following formula can be used:

[0065]

[0066] wherein R is also called a rotation matrix, or a head end posture calibration matrix, or a head end installation calibration matrix, or a head end working parameter calibration matrix, or simply a calibration matrix;

[0067] R z (α) represents a rotation matrix of the angle α;

[0068] R y (β) represents a rotation matrix of the angle β;

[0069] R x (γ) represents a rotation matrix of the angle γ.

[0070] represents the coordinates of the head end in the global coordinate system.

[0071] In this way, the position of any target can be uniquely represented in a unified coordinate system.

[0072] In an outdoor scene, due to the existence of global navigation satellite system (GNSS, including GPS of the United States, GLONASS system of Russia, Galileo system of the European Union, Beidou navigation system of China, etc.), the geocentric rectangular coordinate system, WGS 84 coordinate system, ECEF coordinate system, ENU coordinate system, etc. can be used as the GCS coordinate system, so that the target in the GCS coordinate system has a unique global coordinate.

[0073] From the above, in order to uniquely represent the position of the target in the global coordinate system, the following information needs to be obtained:

[0074] Information 1: the coordinates of each head end in the GCS coordinate system, denoted as

[0075] Information II: the pose parameters of the head-end, i.e., a, b, g.

[0076] wherein information I and information II are defined as the working parameters of the head-end, and the process of obtaining these working parameters is the calibration process of the working parameters. The pose parameters of the head-end in information II can be obtained by means of the rotation matrix R of the head-end.

[0077] It should be noted that the key of the working parameter acquisition lies in how to obtain the coordinates of the target in the GCS coordinate system. Accordingly, the present application sets a series of signaling (such as GCS activation signaling) and network interface parameters according to the interface of the network side, aiming to obtain the coordinates of the target in the GCS coordinate system.

[0078] The following will be described in detail with reference to the accompanying drawings. Figures 2 to 4 The present application will be described in detail.

[0079] Please refer to Figure 2 , Figure 2 is a flowchart of the head-end working parameter acquisition method provided by the present application. A head-end working parameter acquisition method is applied to a network side, wherein the network side comprises at least one head-end, and the at least one head-end comprises at least one pure perception head-end and / or at least one general perception head-end, each head-end is separately integrated with a GCS auxiliary system, or a plurality of head-ends are collectively integrated with a GCS auxiliary system as a group;

[0080] The method comprises:

[0081] S210, when the network side perceives the target and obtains the LCS coordinates, sends the GCS activation signaling containing the head-end level to the GCS auxiliary system.

[0082] For example, in a perception networking environment, all head-ends in the network are perception head-ends, and each perception head-end is integrated with a GCS auxiliary system receiver. In this networking scenario, there is at least one terminal integrated with a GCS auxiliary system transmitter. The perception head-end refers to a head-end with perception capability. This perception capability is manifested in that the network side can transmit and receive wireless perception signals such as continuous wave, sawtooth wave, pulse wave, etc., and this perception process does not require the terminal side to have the ability to transmit or receive perception signals.

[0083] The receiver and transmitter of the GCS auxiliary system comply with Remote ID (RID) technology. RID technology is a standardized technology for identifying and tracking unmanned aerial vehicles, which can improve the safety and transparency of unmanned aerial vehicles and assist regulatory agencies and airspace administrators in real-time monitoring of unmanned aerial vehicle flight activities. The working principle is as follows: the unmanned aerial vehicle broadcasts identity information containing its unique identifier (such as serial number or registration number, etc.), position, height, speed, etc. by means of wireless technology, and the receiving side receives and processes these information by means of the RID receiver. Through the RID technology, the network side can obtain the position, identity, speed, and information timestamp of the unmanned aerial vehicle in real time.

[0084] Specifically, the network side sends a sensing signal through a sensing head, the sensing signal returns to the network side after being reflected by the terminal, and sensing signal detection is performed. After the network side senses the target and obtains its LCS coordinates, GCS activation signaling can be carried in the interface signaling, which includes one or more combinations of GCS reporting period, reporting start time slot number, and GCS reporting accuracy, to instruct the GCS auxiliary system to start the operation related to the GCS, such as reporting its current GCS coordinate information. After the transmitter of the GCS auxiliary system integrated in the terminal receives the GCS reporting signaling, the GCS coordinate information is sent to the GCS auxiliary system (i.e. the receiver). Therefore, by sending the GCS activation signaling, the network side can control the GCS auxiliary system to report the GPS information, so as to obtain the coordinates of each terminal in the GCS coordinate system.

[0085] In an embodiment, the GCS auxiliary system receiver and the GCS transmitter integrated in the terminal communicate in real time, that is, the GCS auxiliary system can obtain the GCS information of the terminal in real time. Then the network side only needs to instruct the GCS auxiliary system to activate the GCS reporting through the interface signaling. In this way, the network side can also obtain the GCS coordinates of each terminal.

[0086] S220, the network side waits for the GCS auxiliary system to respond to the GCS activation signaling, and the GCS auxiliary system feeds back GCS coordinate information when responding, which is used to calculate the head parameter.

[0087] Specifically, the GCS auxiliary system feeds back GCS coordinate information when responding, and the GCS reporting delay difference can be read from the GCS coordinate information. The GCS coordinate information is used to calculate the head parameter, thereby supporting subsequent coordinate conversion and parameter calibration, and ensuring the positioning accuracy of the target in the GCS.

[0088] It can be seen that the GCS activation signaling provided by the application is a core step for realizing the key link of obtaining the coordinates of the head end in the GCS coordinate system. The GCS activation signaling has the following effects: first, it can trigger the GCS auxiliary system to report the GCS coordinate information, providing a data source for obtaining the GCS coordinates of the head end; second, the GCS activation signaling of the head end contained in the message provides necessary instructions and parameter basis for related operations; third, it provides support for head end parameter calibration. Through the synergistic effect of the above various modes, it is ensured that the target can be uniquely represented in the global coordinate system, thereby ensuring the accuracy of positioning.

[0089] In some embodiments, the method further comprises:

[0090] S230, when the network side cannot perceive the target, sending a GCS deactivation message to the GCS auxiliary system, the GCS deactivation message containing a head end level GCS deactivation signaling, and waiting for receiving a GCS deactivation signaling feedback from the GCS auxiliary system after receiving the GCS deactivation signaling.

[0091] Please refer to Figure 3 , Figure 3 is a schematic diagram of the network side provided by the embodiments of the application. The network side includes an LCS calculation unit, a decision unit, a GCS auxiliary system, a position matching unit, a parameter calculation unit, and a GCS calculation unit. The terminal side includes at least one terminal, and the terminal integrates a GCS auxiliary system transmitter.

[0092] In some embodiments, when the network side perceives the target and obtains the LCS coordinates in S210, sending the head end level GCS activation signaling to the GCS auxiliary system includes:

[0093] S211, the LCS calculation unit calculates the LCS coordinates of the terminal, generates a terminal ID, a head end ID, LCS coordinates, and an LCS confidence level, and passes them to the decision unit.

[0094] Specifically, the terminal ID refers to a unique identification of the terminal on the network side. It can be realized by the RNTI (Radio Network Temporary Identifier) value of the terminal, or the IMSI (International Mobile Subscriber Identity) of the terminal. If there is only one terminal target, the detection ID is equivalent to the terminal ID. The head ID refers to the unique identification of the head on the network side. It can be realized by the ESN (Electronic Serial Number) of the head, the MAC address, the IP address of the head, or the channel number (corresponding to the head ID) preset on the network side. The LCS coordinates, i.e. the coordinates of the target detected by the network in the local coordinate system, include x coordinates, y coordinates and z coordinates. The LCS confidence indicates the reliability of the LCS coordinates, which can be calculated according to the RSRP (Reference Signal Received Power), SNR (Signal-to-Noise Ratio), RSSI (Received Signal Strength Indicator) and power value of the RVA spectrum of the received signal corresponding to the LCS coordinates, or by the combination of the above parameters. The higher the LCS confidence, the more reliable the LCS coordinates.

[0095] In S212, the decision unit determines whether the LCS coordinates of the terminal under the head ID are reliable according to the LCS confidence.

[0096] Specifically, the decision unit is responsible for maintaining the LCS coordinates of the terminal and the head. It determines whether the LCS coordinates of a specific terminal under a specific head are reliable according to the LCS confidence. If the confidence of the LCS coordinates received by the decision unit continuously for multiple times is higher than a preset threshold, it is determined that the LCS coordinates are reliable.

[0097] For example, the decision unit is monitoring the LCS coordinates of terminal A under head B. Assuming that the preset threshold N2 = 0.8 and the number of continuously received coordinate values N1 = 5, the decision unit starts to receive the LCS coordinates of terminal A from head B:

[0098] The LCS confidence corresponding to the first received LCS coordinates is 0.85, which is obtained by calculating the RSRP (Reference Signal Received Power) of the received signal corresponding to the LCS coordinates.

[0099] The LCS confidence corresponding to the second received LCS coordinates is 0.9, which is calculated according to the SNR (Signal-to-Noise Ratio) of the received signal.

[0100] The LCS confidence corresponding to the third received LCS coordinates is 0.88, which is calculated according to the RSSI (Received Signal Strength Indicator).

[0101] The LCS confidence corresponding to the fourth received LCS coordinates is 0.92, which is calculated according to the power value of the RVA spectrum.

[0102] The LCS confidence corresponding to the fifth received LCS coordinate is 0.86, which is the result of the calculation of the above several parameter combinations.

[0103] Since the decision unit receives the LCS coordinate of terminal A from head B for 5 times (N1=5) and the LCS confidence of each time is greater than the preset threshold 0.8 (N2=0.8), the decision unit considers that the LCS coordinate of terminal A under head B is reliable.

[0104] If the LCS coordinate is reliable, S213 is executed.

[0105] If the LCS coordinate is not reliable, S214 is executed.

[0106] In S213, the decision unit outputs a GCS activation indication, and generates and sends a head-end-level GCS activation signaling to the GCS auxiliary system according to the GCS activation indication.

[0107] That is, the decision unit outputs a GCS activation indication, the GCS activation indication contains terminal-level, head-end-level and GCS activation related indication content, and is implemented by carrying a head-end ID and a GCS activation signaling in an interface based on the GCS activation indication. The GCS activation signaling includes one or more combinations of a GCS reporting period, a reporting start time slot number and a GCS reporting accuracy. The level of GCS reporting accuracy is, for example, one of 10 meters, 1 meter, 0.1 meter, 0.01 meter and 0.001 meter.

[0108] In S214, a GCS deactivation indication is outputted, the decision unit generates a GCS deactivation signaling according to the GCS deactivation indication, and sends the GCS deactivation signaling to the GCS auxiliary system to make the GCS auxiliary system stop reporting GCS coordinate information and feed back GCS deactivation received information; and the decision unit sends the GCS deactivation signaling to the position matching unit to make the position matching unit stop performing position coordinate matching for the corresponding terminal.

[0109] Specifically, the decision unit outputs a GCS deactivation indication to the GCS auxiliary system. The GCS deactivation indication includes terminal-level, head-end-level and GCS deactivation related indication content, and the GCS deactivation indication can be implemented by carrying terminal-level, head-end-level and GCS deactivation signaling in an interface. At the same time, the decision unit sends a GCS deactivation instruction to the position matching unit, and the position matching unit stops performing position coordinate matching for the terminal and the head-end based on the known untrusted LCS coordinate of the terminal and the head-end after receiving the instruction.

[0110] After the GCS auxiliary system receives the GCS deactivation instruction signaling, the GCS auxiliary system stops reading the GCS coordinate information on the auxiliary system and stops reporting the GCS coordinate information, and meanwhile reports feedback that the GCS deactivation command from the head end has been received. The feedback reported by the terminal includes the head end ID and the GCS deactivation received information (i.e., GCS deactivation ACK information); if the network side does not receive the deactivation feedback of the GCS auxiliary system within a specified time, the network side initiates the GCS deactivation signaling to the GCS auxiliary system again.

[0111] In some embodiments, in step S220, the network side waits for the GCS auxiliary system to respond to the GCS activation signaling, and the GCS auxiliary system feeds back the GCS coordinate information when responding, which includes:

[0112] In step S221, after the GCS auxiliary system receives the GCS activation signaling, the GCS auxiliary system acquires the GCS coordinate information of the terminal through the GCS auxiliary receiving device, and the GCS coordinate information includes the head end ID, the GCS coordinate, the terminal ID, and the timestamp.

[0113] In some embodiments, the method further includes:

[0114] In step S222, the network side receives the GCS coordinate information from the terminal fed back by the GCS auxiliary system, extracts the head end ID, the GCS coordinate, the terminal ID, and the timestamp information therefrom, and transmits the information to the position matching unit.

[0115] In step S223, the position matching unit performs a matching operation on the LCS coordinate and the GCS coordinate.

[0116] Exemplarily, step S223 includes:

[0117] In step S2231, according to the mode of the sensing time slot and the communication time slot, the communication frame ratio, the sensing frame period, the GCS reporting start time slot number, and the period indication, all the LCS coordinates and GCS coordinates to be matched are processed to calculate the time slot number interval between each LCS coordinate and GCS coordinate, and the coordinate combination with the smallest time slot number interval is selected as the preliminary screening result.

[0118] For example, when performing the matching operation, the coordinate with the smallest time slot number interval can be selected according to the frequency of the GCS and the LCS and the time slot number corresponding to the reporting time to perform the matching operation.

[0119] In step S2232, after the time delay value is acquired from the GCS coordinate information fed back by the GCS auxiliary system, the position matching unit subtracts the time delay value from the GCS time slot number in the preliminary screening result to acquire the corrected GCS coordinate.

[0120] It should be noted that the time delay value of this step can be embodied in the signaling of the network side indicating the GCS auxiliary system feedback. Specifically, the signaling of the network side indicating the GCS auxiliary system feedback includes: the GCS system of the GCS auxiliary system reads the time delay difference reported by the GCS system, and indicates the unit of the time delay difference, which is defaulted as a time slot.

[0121] S2233, when the LCS calculation unit outputs the LCS calculation time delay value, the position matching unit subtracts the LCS calculation time delay value from the LCS time slot number of the LCS coordinate in the preliminary screening result to obtain the modified LCS coordinate information.

[0122] S2234, performing a matching operation based on the modified GCS coordinate and the LCS coordinate.

[0123] S224, the work parameter calculation unit receives the matched coordinate information, calculates the work parameter coefficient of each head end, and sends the calculated work parameter coefficient to the GCS calculation unit, which is used to convert the LCS coordinate of each terminal into a GCS coordinate.

[0124] Specifically, after receiving the relevant information including terminal level, head end level, LCS coordinate and GCS coordinate output by the position matching unit, the work parameter calculation unit calculates the work parameter coefficient for each head end, and sends the calculated work parameter coefficient to the GCS calculation unit, which is used to convert the LCS coordinate of each terminal into a GCS coordinate.

[0125] It should be noted that the head end work parameter acquisition provided by the present application can be applied to a common sense networking scene, and can also be applied to a hybrid networking scene. In the common sense networking scene, the head end in the networking is a common sense head end; in the hybrid networking scene, part of the head end in the networking is a common sense head end and part is a sensing head end.

[0126] In summary, the calibration of the head end work parameter provided by the present application has many advantages: first, the overall cost is low, because the calibration process does not depend on the installation of GNSS sensors or attitude sensors in the head end; second, the calibration accuracy is high; third, it can support real-time online calibration of work parameters, and even if there is head end movement or tilting in the network, the head end work parameter information can be quickly updated.

[0127] In some embodiments, the at least one head end includes a plurality of pure sensing head ends;

[0128] The method further includes:

[0129] According to the head end coverage, the GCS auxiliary system deployment interval and the coverage area grouping; or according to the head end equipment type grouping; each group integrates a GCS auxiliary system.

[0130] Specifically, the receiver and transmitter of the GCS auxiliary system follow the ADS-B (Automatic Dependent Surveillance-Broadcast) technology. ADS-B is an automatic communication technology applied between the aircraft and the ground station. The system broadcasts the position, speed, height and other information of the aircraft, so that other aircraft and ground stations can monitor and track the trajectory and other dynamic information of the aircraft in real time. The coverage range of the ADS-B system is generally 250-400 kilometers, so in the multi-head networking scenario, the heads can be grouped, so that each head group only needs to integrate one GCS auxiliary system receiver.

[0131] The method of grouping the heads is as follows:

[0132] Method one: grouping according to the coverage range of the head, the deployment interval and the coverage area of the GCS auxiliary system. For example, in a dense urban area, the head deployment interval is 0.5 kilometers, and if the GCS auxiliary system uses ADS-B, the deployment interval is 200 kilometers (roughly equivalent to the size of a city), so all the heads in a city range can be divided into one group; if the GCS auxiliary system uses R-ID, and the deployment interval of R-ID is 1 kilometer, then 2-4 heads can be divided into a group.

[0133] Method two: grouping according to the type of head equipment manufacturer. For example, head 1 and head 2 belong to the same equipment manufacturer, and head 3 to head 5 belong to the same equipment manufacturer, so head 1 and head 2 can be divided into a group, and head 3 to head 5 can be divided into another group.

[0134] In some implementations, the method further comprises:

[0135] The decision unit sends GCS activation and deactivation signaling related to the head level and the terminal level through the interface. Then, the decision unit sends the head level and GCS auxiliary system ID parameter containing the correspondence between each head ID and the GCS auxiliary system ID through the interface. This parameter is notified to the GCS auxiliary system only once at system startup, and if the head group is updated, the correspondence between the head and the GCS auxiliary system can be updated and sent to the GCS auxiliary system through the interface again. Then, the GCS auxiliary system receives the GCS coordinate information of the target feedback using the receiving device after receiving the GCS activation signaling, and transmits the GCS information containing the head level and the terminal level to the matching unit. Finally, when the GCS auxiliary system receives the GCS deactivation signaling, it stops receiving the GCS coordinate information, and feeds back to the decision unit that the deactivation signaling has been received.

[0136] The head parameter acquisition device provided in the present application is described below. The head parameter acquisition device described below can be correspondingly referred to the head parameter acquisition method described above.

[0137] Referring to Figure 4 , Figure 4 is a structural block diagram of a head-end working parameter acquisition device provided by the present application. A head-end working parameter acquisition device 400 is applied to a network side, the network side including at least one head-end, the at least one head-end including at least one pure perception head-end and / or at least one common perception head-end, each head-end individually integrating a GCS auxiliary system, or multiple head-ends collectively integrating a GCS auxiliary system as a group; the device including a sending module 410 and a receiving module 420.

[0138] Exemplarily, the sending module 410 is configured to send GCS activation signaling containing a head-end level to the GCS auxiliary system when the network side perceives a target and acquires LCS coordinates.

[0139] Exemplarily, the receiving module 420 is configured to wait for the GCS auxiliary system to respond to the GCS activation signaling at the network side, the GCS auxiliary system feeding back GCS coordinate information when responding, the GCS coordinate information being used to calculate head-end working parameters.

[0140] It can be seen that the head-end working parameter calibration provided by the present application has the following advantages:

[0141] Firstly, the overall calibration cost is low, and the implementation process does not depend on the installation of GNSS sensors or attitude sensors at the head-end; secondly, the calibration accuracy is high; thirdly, real-time online calibration of working parameters is supported, and when there is head-end movement or tilting in the network, the head-end working parameter information can be quickly updated; fourthly, working parameter calibration can be realized in various networking modes such as common perception networking, pure perception networking, pure communication networking and hybrid networking; and fifthly, working parameter calibration can also be supported for terminal communication mode.

[0142] On the other hand, the present application also provides a computer program product, the computer program product including a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer can execute the head-end working parameter acquisition method provided by the above-mentioned methods.

[0143] Still another aspect, the present application also provides a non-transitory computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the head-end working parameter acquisition method provided by the above-mentioned methods.

[0144] The electronic device, the computer program product, and the processor readable storage medium provided by the embodiment of the present application store the computer program which enables the processor to realize all the method steps of the above-mentioned method embodiment and achieve the same technical effects. The same parts and beneficial effects of the embodiment and the method embodiment will not be described in detail.

[0145] The device embodiments described above are only schematic, and the units illustrated as separate components may or may not be physically separate, and the components illustrated as units may or may not be physical units, i.e., may be located in one place or distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme. Those skilled in the art can understand and implement without creative labor.

[0146] From the above description of the embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary universal hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of software product, which can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0147] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for obtaining head-end operating parameters, characterized in that, Applied to the network side, the network side includes at least one head end, the at least one head end includes at least one pure perception head end and / or at least one general perception head end, each head end is independently integrated with a GCS auxiliary system, or multiple head ends are collectively integrated with a GCS auxiliary system as a group; The method comprises: When the network side perceives the target and obtains the LCS coordinates, GCS activation signaling containing the head end level is sent to the GCS auxiliary system; The network side waits for the GCS auxiliary system to respond to the GCS activation signaling, and the GCS auxiliary system feeds back GCS coordinate information when responding, which is used to calculate the head end work parameter.

2. The head end work parameter acquisition method according to claim 1, wherein: The network side includes an LCS calculation unit and a decision unit; When the network side perceives the target and obtains the LCS coordinates, the GCS activation signaling is sent to the GCS auxiliary system, which comprises: The LCS calculation unit calculates the LCS coordinates of the terminal, generates a terminal ID, a head end ID, LCS coordinates and an LCS confidence level, and passes them to the decision unit; The decision unit determines whether the LCS coordinates of the terminal under the head end ID are reliable according to the LCS confidence level; If the LCS coordinates are reliable, the decision unit sends the GCS activation signaling of the head end level to the GCS auxiliary system; wherein the GCS activation signaling includes one or more combinations of GCS reporting period, reporting start time slot number and GCS reporting accuracy.

3. The head end work parameter acquisition method according to claim 1, wherein: The network side waits for the GCS auxiliary system to respond to the GCS activation signaling, and the GCS auxiliary system feeds back GCS coordinate information when responding, which is used to calculate the head end work parameter, which comprises: After the GCS auxiliary system receives the GCS activation signaling, the GCS coordinate information of the terminal is obtained through the GCS auxiliary receiving device, and the GCS coordinate information includes the head end ID, the GCS coordinates, the terminal ID and the timestamp.

4. The head end work parameter acquisition method according to claim 2, wherein: The network side further includes a position matching unit, a work parameter calculation unit and a GCS calculation unit; The method further comprises: The network side receives the GCS coordinate information from the terminal fed back by the GCS auxiliary system, extracts the information of the head end ID, the GCS coordinates, the terminal ID and the timestamp, and passes them to the position matching unit; The position matching unit performs matching operation on the LCS coordinates and the GCS coordinates; The work parameter calculation unit receives the matched coordinate information to calculate the work parameter coefficient of each head end, and sends the calculated work parameter coefficient to the GCS calculation unit, which is used to convert the LCS coordinates of each terminal into GCS coordinates.

5. The head end work parameter acquisition method according to claim 2, wherein: The method further comprises: If the confidence level of the LCS coordinates received by the decision unit continuously for multiple times is higher than the preset threshold, it is determined that the LCS coordinates are reliable.

6. The head end work parameter acquisition method according to claim 2, wherein: The method further comprises: When the decision unit determines that the LCS coordinates are not reliable, a GCS deactivation indication is outputted; The decision unit generates GCS deactivation signaling according to the GCS deactivation indication, and sends the GCS deactivation signaling to the GCS auxiliary system, so that the GCS auxiliary system stops reporting GCS coordinate information and feeds back GCS deactivation receipt information; and The decision unit sends the GCS deactivation signaling to the position matching unit, so that the position matching unit stops matching the position coordinates of the corresponding terminal.

7. The head-end parameter acquisition method of claim 4, wherein the signaling feedback by the network side to the GCS auxiliary system comprises: The GCS system of the GCS auxiliary system reads the time delay difference reported by the GCS system, and indicates the unit of the time delay difference, which is a time slot by default.

8. The head-end parameter acquisition method of claim 7, wherein the matching operation of the position matching unit on the LCS coordinates and the GCS coordinates comprises: According to the mode of the sensing time slot and the communication time slot, the communication frame ratio, the sensing frame period, the GCS reporting start time slot number and the period indication, all the LCS coordinates and the GCS coordinates to be matched are processed to calculate the time slot number interval between each LCS coordinate and the GCS coordinate, and the coordinate combination with the smallest time slot number interval is selected as the preliminary screening result; After obtaining the time delay value in the GCS coordinate information feedback by the GCS auxiliary system, the position matching unit subtracts the time delay value from the GCS time slot number in the preliminary screening result to obtain the corrected GCS coordinate; When the LCS calculation unit outputs the LCS calculation time delay value, the position matching unit subtracts the LCS calculation time delay value from the LCS time slot number of the LCS coordinate in the preliminary screening result to obtain the corrected LCS coordinate information; The matching operation is performed based on the corrected GCS coordinate and the LCS coordinate.

9. The head-end parameter acquisition method of claim 1, wherein the at least one head-end comprises a plurality of pure sensing head-ends; and the method further comprises: According to the head-end coverage, the GCS auxiliary system deployment interval and the coverage area grouping; or according to the head-end device type grouping; and each grouping is integrated with a GCS auxiliary system.

10. The head-end parameter acquisition method of claim 9, wherein the method further comprises: The decision unit sends the GCS activation and deactivation signaling related to the head-end level and the terminal level through the interface; The decision unit sends the head-end level and GCS auxiliary system ID parameters containing the corresponding relationship between each head-end ID and GCS auxiliary system ID through the interface; After receiving the GCS activation signaling, the GCS auxiliary system receives the target feedback GCS coordinate information using the receiving device, and transfers the GCS information containing the head-end level and the terminal level to the matching unit; When the GCS auxiliary system receives the GCS deactivation signaling, it stops receiving the GCS coordinate information and feeds back to the decision unit that the deactivation signaling has been received. ​ ​ ​ ​ ​ 11. A device for acquiring head-end parameters, characterized in that, Applied to the network side, the network side includes at least one head end, the at least one head end includes at least one pure perception head end and / or at least one general perception head end, each head end is independently integrated with a GCS auxiliary system, or multiple head ends are collectively integrated with a GCS auxiliary system as a group; The device comprises: A sending module is configured to send GCS activation signaling containing a head end level to the GCS auxiliary system when the network side perceives a target and obtains LCS coordinates; A receiving module is configured to wait for the GCS auxiliary system to respond to the GCS activation signaling at the network side, and the GCS auxiliary system feeds back GCS coordinate information when responding, wherein the GCS coordinate information is used to calculate head end parameters.

12. A processor-readable storage medium, characterized in that, The processor readable storage medium stores a computer program, and the computer program is used to make the processor execute the head end parameter acquisition method according to any one of claims 1-10.

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