WO2021097680A1

WO2021097680A1 - Positioning method and apparatus

Info

Publication number: WO2021097680A1
Application number: PCT/CN2019/119508
Authority: WO
Inventors: 许永毅; 王仁为
Original assignee: 华为技术有限公司
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2021-05-27
Also published as: CN114731484A

Abstract

Disclosed are a positioning method and apparatus. The positioning method can be applied to a network management device, and comprises: a network management device receiving first information respectively sent by at least two access network devices, sending second information to each access network device of the at least two access network devices, such that the access network device measures a phase deviation of the access network device, and determining a target position of an interference device according to the phase deviation obtained by means of the measurement of each access network device. By means of the positioning method, a network management device can quickly position an interference device.

Description

Positioning method and device

Technical field

The embodiments of the present application relate to the field of communications, and in particular, to a positioning method and device.

Background technique

In communication networks, it is usually necessary to synchronize clocks to keep the difference in frequency or time between the entire network communication devices within a certain error range, so as to avoid the inaccuracy of the timing of receiving/sending signals in the transmission system leading to the deterioration of transmission performance . Among them, commonly used clock synchronization solutions include satellite network-based clock synchronization solutions, such as global positioning system (GPS), Beidou timing system, and global navigation satellite system (GLONASS). However, the clock synchronization scheme based on the satellite network has the problem of weak signal strength and easy to be interfered. For example, if there is a pseudo GPS device, the pseudo GPS signal transmitted by the pseudo GPS device may cause the phase error of the base station clock, leading to the problem of base station service interference. How to quickly find the source of the pseudo GPS signal has become a problem to be solved.

Summary of the invention

The embodiment of the present application provides a positioning method, which can quickly locate an interfering device, thereby reducing the influence of the interfering device.

In the first aspect, an embodiment of the present application provides a positioning method, which may be executed by a network management device. Wherein, the network management device receives first information respectively sent by at least two access network devices, and the first information is used to indicate that the access network device has received the interference signal sent by the interference device. The network management device sends second information to each of the at least two access network devices, where the second information is used to instruct the access network device to measure the phase deviation of the access network device. The network management device determines the target location of the interference device according to the phase deviation measured by each of the access network devices. Using this positioning method, the network management equipment can quickly locate the interfering equipment.

In a possible design, the network management device selects m access network devices from the at least two access network devices, and the number of the at least two access network devices is n, 2≦m≦n. For any one of the m access network devices, the network management device determines the distance difference between the interference device and the access network device according to the phase deviation of the access network device. According to the determined m distance differences, the target position of the interfering device is determined. It can be seen that the network management device can determine the distance difference between the interfering device and the interfered access network device based on the phase deviation measured by the at least two interfered access network devices, thereby determining the target location of the interfering device.

In a possible design, the network management device determines the first distance difference, the second distance difference, and the third distance difference among the m distance differences. Determine the first predicted location set of the interfering device according to the first distance difference and the third distance difference; determine the second set of the interfering device according to the second distance difference and the third distance difference The set of predicted locations. Determine the target position of the interfering device according to the first set of predicted positions and the second set of predicted positions. When three interfered access network devices participate in calculating the distance difference between the interfered device and the interfered access network device, the positioning accuracy of the interfered device can be improved.

In a possible design, the target position is a position in the intersection of the first set of predicted positions and the set of second predicted positions.

In a possible design, the network management device determines at least two predicted location sets according to the m distance differences. According to the at least two predicted position sets, an intersection of the at least two predicted position sets is determined, and the intersection of the at least two predicted position sets includes one or more predicted positions. It is determined that any one predicted location in the intersection of the at least two predicted location sets is the target location of the interfering device.

In a possible design, the network management device determines, according to multiple predicted locations in the intersection of the at least two predicted location sets, the distribution area formed by the multiple predicted locations that is closest to the center point of the distribution area The predicted location is the target location of the interfering device.

In a possible design, the network management device sends the target location of the interference device to the execution device, so that the execution device outputs the target location of the interference device, and the target location output by the execution device is used to indicate the shutdown The interference device.

In the second aspect, an embodiment of the present application provides a positioning device that has the function of implementing the positioning method provided in the first aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a third aspect, an embodiment of the present application provides a positioning device, the positioning device includes a processor, and is configured to implement the function or method involved in the above-mentioned first aspect. The positioning device may be, for example, a chip system. In a feasible implementation manner, the positioning device further includes a memory for storing program instructions and data necessary to realize the functions of the method described in the first aspect.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which includes a program or instruction, which when the program or instruction runs on a computer, causes the computer to execute the first aspect or the first aspect The method in any one of the possible implementations.

The chip system in the above aspect may be a system on chip (SOC), or a baseband chip, etc., where the baseband chip may include a processor, a channel encoder, a digital signal processor, a modem, and an interface module.

In a fifth aspect, the embodiments of the present application provide a chip or chip system. The chip or chip system includes at least one processor and a communication interface. The communication interface and the at least one processor are interconnected through a wire, and the at least one processor is used to run a computer program or Instructions to perform the method described in any one of the first aspect to any one of the possible implementation manners of the first aspect.

Among them, the communication interface in the chip can be an input/output interface, a pin, or a circuit.

In a possible implementation, the chip or chip system described above in this application further includes at least one memory, and instructions are stored in the at least one memory. The memory may be a storage unit inside the chip, for example, a register, a cache, etc., or a storage unit of the chip (for example, a read-only memory, a random access memory, etc.).

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings that need to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. A person of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of this application;

FIG. 2a is a schematic diagram of a communication scenario provided by an embodiment of this application;

FIG. 2b is a schematic diagram of an interference scenario provided by an embodiment of this application;

FIG. 3 is a schematic flowchart of a positioning method provided by an embodiment of this application;

Figure 4 is a schematic diagram of a base station clock block diagram;

Figure 5 is a schematic diagram of a pulse signal of a local clock and a pulse signal output by a GPS star card;

FIG. 6 is a schematic diagram of a target location of an interference device according to an embodiment of the application;

FIG. 7a is a schematic diagram of a target location of an interference device according to an embodiment of the application;

FIG. 7b is a schematic diagram of a target location of an interference device according to an embodiment of this application;

Figure 7c is a schematic diagram of a target location of an interference device provided by an embodiment of the application

FIG. 8a is a schematic flowchart of a positioning method provided by an embodiment of this application;

FIG. 8b is a schematic flowchart of a positioning method provided by an embodiment of this application;

FIG. 9 is a schematic structural diagram of a positioning device provided by an embodiment of the application;

FIG. 10 is a schematic structural diagram of a positioning device provided by an embodiment of the application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

Before the description of the embodiments of the present application, the related background technology is first introduced.

In communication networks, it is usually necessary to synchronize clocks to keep the difference in frequency or time between the entire network communication devices within a certain error range, so as to avoid the inaccuracy of the timing of receiving/sending signals in the transmission system leading to the deterioration of transmission performance . For example, the communication between an access network device (such as a base station) and a terminal device (such as a mobile phone) can pass through an uplink channel and a downlink channel. Among them, the access network device to the terminal device is a downlink channel, and the terminal device to the access network device is an uplink channel. When the uplink/downlink channel is working, the time should be staggered. If the uplink and downlink channels send data at the same time, because the downlink channel power of the access network device is high, it will interfere with the uplink channel of the terminal device, resulting in the failure of uplink channel data transmission. Therefore, each access network device and terminal device must synchronize their clocks to avoid uplink/downlink data interference.

In an example, the access network equipment in a certain area may be managed by the network management equipment. Referring to FIG. 1, in a communication system shown in FIG. 1, a network management device 110, an access network device 120 and a terminal device 130 are included. Optionally, the communication system may further include multiple access network devices and/or multiple terminal devices, which is not limited in this embodiment.

The network management device 110 is used to manage access network devices located in the management area of the network management device 110. For example, the network management device 110 is used to collect the communication status of the access network device 120, or send control information to the access network device 120, and so on. The network management device 110 may include, but is not limited to, a server (server), a cloud platform (cloud platform), a virtual machine (virtual machine, VM) and other devices with certain computing capabilities.

Among them, the access network device 120 can provide network access functions for authorized users in a specific area, and can determine transmission tunnels of different qualities to transmit user data according to the user's level and service requirements. The access network device 120 may be, for example, a base station (such as eNB) in an LTE system or a base station (such as NG-RAN) in a new radio (NR) system, a base station for subsequent evolution of 3GPP, and an access node in a WiFi system. , Wireless relay node, wireless backhaul node, etc. The base station can be a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc.

Among them, the terminal device 130 is a device with a wireless transceiver function. Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial control) ) In the wireless terminal, in-vehicle terminal equipment, unmanned (self-driving) wireless terminal, remote medical (remote medical) wireless terminal, smart grid (smart grid) wireless terminal, transportation safety (transportation safety) Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, wearable terminal devices, and so on. Terminal equipment can sometimes be called terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile Equipment, UE agent or UE device, etc. The terminal device can also be fixed or mobile.

In an example, the management area of the network management device 110 may include multiple access network devices, as shown in FIG. 2a. In the communication scenario shown in FIG. 2a, the access network device 120, the access network device 121 and the access network device 122 managed by the network management device 110, and the accessed terminal device 130 may adopt a clock synchronization scheme for clock synchronization. Common clock synchronization solutions include satellite network-based clock synchronization solutions, such as global positioning system (GPS), Beidou timing system, and global navigation satellite system (GLONASS). However, the clock synchronization scheme based on the satellite network has the problem of weak signal strength and easy to be interfered. For example, GPS interference mainly affects the signal transmission and reception between the base station and the terminal. If there is a pseudo GPS device, the pseudo GPS signal transmitted by the pseudo GPS device may cause the phase error of the base station clock and cause the problem of base station service interference. Referring to FIG. 2b, in the interference scenario shown in FIG. 2b, the network management device 110, the access network device 120, the access network device 121, the access network device 122, the terminal device 130, and the interference device 140 are included. Wherein, the area where the access network device 120 and the access network device 121 are located can receive the interference signal sent by the interference device 140, and the access network device 122 will not receive the interference signal sent by the interference device 140. When the interference device 140 sends an interference signal to the access network device 120 and the access network device 121 with a strong power, the clock synchronization of the access network device 120 and the access network device 121 will be affected. Among them, the time information of the interfering device 140, the access network device 120, the access network device 121, and the access network device 122 are shown in Table 1.

Table 1: Time information table of interference equipment and access network equipment

设备名称Equipment name	本地时间local time	接收干扰信号后的时间Time after receiving interference signal

干扰设备140Interference equipment 140	12:0012:00	12:0012:00
接入网设备120Access network equipment 120	18:0018:00	12:0012:00
接入网设备121Access network equipment 121	18:0018:00	12:0012:00
接入网设备122Access network equipment 122	18:0018:00	18:0018:00

It can be seen that after the access network device 120 and the access network device 121 receive the interference signal, the time of the access network device 120 and the access network device 121 is incorrectly carried and is no longer synchronized with the clock of the access network device 122. In a possible situation, since the clocks of the access network device 121 and the access network device 122 are no longer synchronized, when the terminal device 130 within the coverage of the access network device 122 sends data to the access network device 122 through the uplink channel At this time, the access network device 121 may open the downlink channel to send data. Then, the downlink data sent by the access network device 121 will interfere with the communication between the terminal device 130 and the access network device 122, causing the uplink data transmission of the terminal device 130 to fail, as shown in FIG. 2b. It can be seen that how to quickly find the location of the interfering device so as to avoid business interference has become a problem to be solved.

In order to solve the above-mentioned problem, the embodiment of the present application provides a positioning method, which can be executed by a network management device, by instructing the access network device to measure the phase deviation of the access network device, and according to each of the access network devices The measured phase deviation determines the target position of the interfering device. This method can quickly locate the interfering device, thereby reducing the influence of the interfering device.

The following will be described in conjunction with specific embodiments.

The embodiment of the present application provides a positioning method, please refer to FIG. 3. The positioning method can be executed by a network management device and includes the following steps:

S301. Receive first information respectively sent by at least two access network devices, where the first information is used to indicate that the access network device has received an interference signal sent by an interference device.

After the access network device receives the interference signal sent by the interference device, it may send the first information to the network management device to notify the network management device that the access network device is interfered. Among them, the access network device can determine whether it has received the interference signal sent by the interference device in the following ways. For example, an access network device receives an abnormal GPS signal, and the abnormal GPS signal is a signal transmitted by a GPS satellite whose GPS satellite number is inconsistent with the GPS satellite number over the local area. Then the access network device can determine that it has received the interference signal sent by the interference device. For another example, the phase of the GPS signal received by the access network device is abnormal, and when compared with the phase of the local clock output, the phase of the local clock jumps. Then the access network device can determine that it has received the interference signal sent by the interference device. If the network management device receives the first information respectively sent by at least two interfered access network devices, the interference location function can be activated to determine the target location of the interference device.

S302: Send second information to each of the at least two access network devices, where the second information is used to instruct the access network device to measure the phase deviation of the access network device.

In order to quickly locate the target location of the interfering device, the network management device may send second information to at least two interfered access network devices, where the second information is used to instruct the interfered access network device to measure the access network device The phase deviation. For example, if the network management device receives the first information sent from the access network device 1 and the access network device 2, the network management device sends the second information to the access network device 1 and the access network device 2 so that the access network device 1 and the access network device 2 measure their respective phase deviations.

In an example, the phase deviation of the access network device refers to the pulse signal (1pps, second pulse) of the Oven Controlled Crystal Oscillator (OCXO) local clock of the access network device. The phase deviation between the pulse signals (1pps) output by the GPS star card of the network equipment. Refer to Figure 4. The general structure of the clock system of the access network equipment is shown in Figure 4. The general structure of the clock system may include, but is not limited to, a phase detector and an OCXO high-stability crystal oscillator. Among them, the OCXO high-stability crystal oscillator is composed of a quartz crystal oscillator and peripheral circuits, and is used to output local 1pps and 10MHz operating frequencies. The phase detector is used to compare the deviation between the clock output by the GPS star card and the local crystal oscillator clock, for example, to compare the phase deviation between the local 1pps and the GPS 1pps shown in Figure 4. If the phase deviation between the local 1pps and the GPS 1pps exceeds the preset threshold, the clock system will adjust the local 1pps to make the local clock consistent with the clock output by the GPS star card, thereby achieving clock synchronization. For example, OCXO is the local clock of the access network equipment, which is equivalent to a person's watch. The GPS clock is equivalent to the hourly hour of the radio station and is used to synchronize the watch. It should be noted that the phase deviation between the local 1pps of the access network device and the GPS 1pps in this embodiment corresponds to a time value. Please refer to FIG. 5, which is a schematic diagram of a pulse signal of a local clock and a pulse signal output by a GPS star card. It can be seen from Figure 5 that the phase deviation between the local 1pps and GPS1pps corresponds to the time T. For example, the phase deviation measured by the interfered access network device 1 is T ₁ , and the phase deviation measured by the interfered access network device 2 is T ₂ .

S303: Determine the target location of the interfering device according to the phase deviation measured by each of the access network devices.

After the interfered access network equipment measures the phase deviation, it will send the measured phase deviation to the network management equipment. For example, the network management device receives the phase deviation T ₁ sent from the interfered access network device _{1 and receives the phase deviation T 2} sent from the interfered access network device 2. Among them, T ₁ and T ₂ are time values. According to the distance calculation formula L _n =T _n *C, the network management device can determine the distance between each interfered access network device and the interfering device. Among them, L _n represents the distance between the interfered access network device n and the interfering device, T _n represents the phase deviation measured by the interfered access network device n, and C represents the speed of light. After determining the distance between each interfered access network device and the interfering device, the network management device can determine the location of the interfering device by combining the location of each interfered access network device. For example, the network management device receives the phase deviation measured by the interfered access network device 1 as T ₁ , and the phase deviation measured by the interfered access network device 2 is T ₂ . Then, according to the distance calculation formula, the network management device can determine that the distance between the access network device 1 and the interfering device is L ₁ , and the distance between the access network device 2 and the interfering device is L ₂ . Assuming that the distance between the access network device 1 and the access network device 2 is D ₁₂ , the network management device can determine that the absolute value of the distance difference between the interfering device to the access network device 1 and the access network device 2 is constant, that is | L ₁ -L ₂ |=2a, where 0<2a<|D ₁₂ |. It should be noted that |L ₁ -L ₂ | = 2a is the definition of a hyperbola, which means that the operation trajectory of the interfering device is the location of the point P ₁ corresponding to the location of the access network device 1 and the location of the access network device 2 The corresponding point P ₂ is the hyperbola of the focal point, as shown in FIG. 6. Then the network management device can determine that the target location of the interfering device is any point in the hyperbola, such as the point where the five-pointed star in Figure 6 is located.

Optionally, after determining the target location of the interfering device, the network management device may further perform the following steps:

The network management device sends the target location of the interference device to the execution device, so that the execution device outputs the target location of the interference device, and the target location output by the execution device is used to instruct to turn off the interference device.

Wherein, after the network management device determines the target location of the interfering device, it may send the target location of the interfering device to the executing device. Among them, the execution device is used to output the target location of the interfering device. Optionally, the way for the execution device to output the target position of the interfering device may be to display the target position of the interfering device through the display interface of the execution device, or it may be to generate a control instruction to instruct to turn off the interfering device. For example, when the execution device includes a display interface, the target location of the interfering device can be displayed on the display interface of the execution device, including information such as the longitude, latitude, and height of the target location. The user can use the target location of the interfering device displayed on the display interface to notify relevant personnel to go to the target location to turn off the interfering device. For another example, the execution device sends a text message or email to a designated address to notify relevant personnel to go to the target location to turn off the interfering device. The specific implementation manner is not limited in this embodiment.

The embodiment of the present application provides a positioning method, which may be executed by a network management device. Wherein, after the network management device receives the first information respectively sent by at least two interfered access network devices, it sends second information to each interfered access network device to instruct the access network devices to measure their respective phase deviations. Determine the target location of the interfering device according to the phase deviation measured by each interfered access network device. It can be seen that the positioning method provided by the embodiment of the present application can quickly locate the interfering device, thereby reducing the influence of the interfering device. In addition, with this positioning method, after the network management device receives the first information from the access network device, it can automatically start the positioning function, avoiding manual sweeping and searching for the location of the interference device, saving labor costs, and improving processing efficiency.

The steps of the network management device determining the target location of the interfering device according to the phase deviation measured by each of the access network devices will be described in detail below.

In an example, if the network management device obtains the phase deviation of at least two interfered access network devices, the target location of the interfering device can be determined. Wherein, the network management device determines the target location of the interfering device according to the phase deviation measured by each of the access network devices, which may specifically include the following steps:

Selecting m access network devices from the at least two access network devices, the number of the at least two access network devices is n, 2≤m≤n;

For any one of the m access network devices, determine the distance difference between the interference device and the access network device according to the phase deviation of the access network device;

According to the determined m distance differences, the target position of the interfering device is determined.

For example, suppose that in a certain area, the interfered access network devices are access network device 1, access network device 2, and access network device 3, which means that the number of interfered access network devices is 3. , N=3. The network management device can select 2 access network devices from the interfered access network devices, that is, m=2. Assume that the access network equipment selected by the network management equipment is the access network equipment 1 and the access network equipment 2. The access network device 1 and the access network device 2 respectively measure their phase deviations, and send the measurement results to the network management device. The network management device receives the phase deviation T _{1 of the} access network device 1 and the phase deviation T _{2 of the} access network device 2. Then the network management device can determine that the distance difference between the interference device and the access network device 1 is L ₁ =T ₁ *C, and the distance difference between the interference device and the access network device 2 is L ₂ =T ₂ *C. According to the definition of the hyperbola, the network management equipment can determine that the interfering device is located at a certain point of the hyperbola, that is, determine the target location of the interfering device.

Optionally, if the network management device obtains the phase deviations of at least three interfered access network devices, the target location of the interfering device can be determined. Compared with the network management device determining the operation trajectory of the interfering device based on the difference between the two distances, this solution can improve the accuracy of positioning. Wherein, the network management device determines the target location of the interfering device according to the determined m distance differences, which may specifically include the following steps:

Determine a first distance difference, a second distance difference, and a third distance difference among the m distance differences;

Determine a first set of predicted positions of the interfering device according to the first distance difference and the third distance difference;

Determine a second set of predicted positions of the interfering device according to the second distance difference and the third distance difference;

Determine the target position of the interfering device according to the first set of predicted positions and the second set of predicted positions.

For example, suppose that in a certain area, the interfered access network devices are the access network device 1, the access network device 2, the access network device 3, and the access network device 4, which means the interfered access The number of network devices is 4, n=4. The network management device can select 3 access network devices from the interfered access network devices, that is, m=3. It is assumed that the access network equipment selected by the network management equipment is the access network equipment 1, the access network equipment 2, and the access network equipment 4. The access network equipment 1, the access network equipment 2 and the access network equipment 4 respectively measure their respective phase deviations, and send the measurement results to the network management equipment. The network management device receives the phase deviation T ₁ of the access network device _{1, the phase deviation T 2 of the} access network device 2 and the phase deviation T _{4 of the} access network device 4. Then the network management device can determine the distance difference between the interference device and the access network device 1 L ₁ =T ₁ *C, the distance difference between the interference device and the access network device 2 L ₂ =T ₂ *C, the interference device and the access network device 2 The distance difference of ₄ is L 4 =T ₄ *C. According to the distance difference L ₁ and the distance difference L ₂ , the network management device can determine a hyperbola S ₁ ; according to the distance difference L ₂ and the distance difference L ₄ , the network management device can determine another hyperbola S ₂ . It should be noted that the network management device may also determine a hyperbola S ₃ _{according to the distance difference L 1} and the distance difference L ₄ according to the distance difference, which is not limited in this embodiment. Then the intersection point P _{12 of} the hyperbola S ₁ and the hyperbola S ₂ is the target position of the interfering device, as shown in Fig. 7a. It is understandable that the first set of predicted positions and the second set of predicted positions are sets respectively formed by points on different hyperbolas.

In an example, if the network management device obtains the phase deviations of more than three interfered access network devices, the target location of the interfering device can be determined. By determining the distance difference between more than three interfered access network devices and the interfering device, the network management device can more accurately calculate the location of the interference source. Wherein, the network management device determines the target location of the interfering device according to the determined m distance differences, which may specifically include the following steps:

Determine at least two sets of predicted positions according to the m distance differences;

Determining an intersection of the at least two predicted position sets according to the at least two predicted position sets, where the intersection of the at least two predicted position sets includes one or more predicted positions;

It is determined that any one predicted location in the intersection of the at least two predicted location sets is the target location of the interfering device.

For example, suppose that in a certain area, the interfered access network devices are the access network device 1, the access network device 2, the access network device 3, and the access network device 4. It is assumed that the network management device sends the first information to each interfered access network device so that each interfered access network device measures its respective phase deviation. Each interfered access network device sends the measurement result to the network management device. Correspondingly, the network management device receives the phase deviation T ₁ of the access network device _{1, the phase deviation T 2} of the access network device _{2, the phase deviation T 3 of the} access network device 3, and the phase deviation T _{4 of the} access network device 4. Then the network management device can determine the distance difference between the interference device and the access network device 1 L ₁ =T ₁ *C, the distance difference between the interference device and the access network device 2 L ₂ =T ₂ *C, the interference device and the access network device 2 The distance difference of ₃ is L 3 =T ₃ *C, and the distance difference between the interference device and the access network device 4 is L ₄ =T ₄ *C.

The following takes the network management equipment to determine three hyperbolas as an example for description. According to the distance difference L ₁ and the distance difference L ₂ , the network management equipment can determine a hyperbola S ₁ . According to the distance difference L ₂ and the distance difference L ₃ , the network management equipment can determine a hyperbola S ₂ . According to the distance difference According to the distance difference L ₁ and the distance difference L ₄ , the network management device can determine a hyperbola S ₃ . It should be noted that the network management device can also determine more hyperbolas based on a combination of multiple different distance differences, which is not limited in this embodiment. Among them, the intersection of the _{hyperbola S 1} and the hyperbola S ₂ _{is P 12} , and _{the intersection of the hyperbola S 2} and the hyperbola S ₃ is P ₂₃ , as shown in Fig. 7b. It can be understood that the intersection of the at least two predicted position sets includes intersection points P ₁₂ and P ₂₃ . If there are multiple intersections in other hyperbolas, the intersection of the at least two predicted position sets also includes the multiple intersections, which is not limited in this embodiment. Then, the network management device may determine any one predicted location (such as P ₁₂ ) in the intersection of at least two predicted location sets as the target location of the interfering device.

In a possible case, if the intersection of the at least two predicted location sets includes multiple predicted locations, the network management device may determine that the distribution area formed by the multiple predicted locations is closest to the center point of the distribution area The predicted position of is the target position of the interfering device. For example, referring to Figure 7c, the network management device determines that the intersection of at least two predicted location sets includes four predicted locations P ₁₂ , P ₂₃ , P 12, P 23, and P 12 according to the distance difference between the four interfered access network devices in Figure 7 c. P ₃₄ and P ₃₅ . First, the network management device will determine the distance difference between the four predicted locations, and if the distance difference exceeds a preset threshold, delete points whose distance difference exceeds the preset threshold from the intersection of the predicted location sets. For example, in the four predicted positions P ₁₂ , P ₂₃ , P _34, and P ₃₅ shown in Fig. 7c, since _{the distance difference between P 12} and P ₂₃ , P ₃₄ , and P ₃₅ exceeds the preset threshold, the network management device is in When determining the target location of the interfering device, first eliminate P ₁₂ . Then, according to _{the distribution area composed of P 23} , P ₃₄ , and P ₃₅ (the dotted circle shown in Figure 7c), determine the closest distance to the center point of the distribution area (the center of the dotted circle shown in Figure 7c) The predicted position P ₃₅ is the target position of the interfering device. It should be noted that the figure shown in FIG. 7c is only an example, which is not limited in this embodiment.

In the following, in combination with the description in the above embodiment, the overall flow of the positioning method provided in the embodiment of the present application will be exemplarily introduced. Referring to Figure 8a and Figure 8b, the overall process includes steps executed by the access network device and steps executed by the network management device. Among them, the steps performed by the access network equipment are shown in Figure 8a, including the following steps:

After the access network equipment starts up and running, the GPS star card receives GPS signals and outputs clock, location and other information;

The access network equipment periodically verifies data such as the number of GPS satellites used by the GPS star card, GPS satellite number, and satellite signal-to-noise ratio;

The access network equipment judges whether there is an interference signal;

If there is an interference signal, the access network device sends first information to the network management device, where the first information is used to indicate that the access network device has received the interference signal sent by the interference device;

If there is no interference signal, the access network equipment continues to periodically check the GPS star card.

Among them, the access network equipment can determine whether there is an interference signal by checking the GPS satellite number. For example, the access network equipment can usually receive signals sent by 10 GPS satellites at the same time. The access network equipment compares the received GPS satellite number with the preset receiving GPS satellite number, and if there is a GPS satellite number that is inconsistent with the preset receiving GPS satellite number, it is determined that there is an interference signal. Optionally, the access network device can determine whether there is an interference signal by determining the phase change of the clock output by the GPS star card. For example, if the phase of the clock output by the GPS star card jumps (such as a phase deviation of 90 degrees), the access network device can determine that there is an interference signal.

After the access network device performs the steps shown in FIG. 8a, referring to FIG. 8b, the network management device can continue to perform the steps shown in FIG. 8b to determine the target location of the interfering device. Among them, the steps performed by the network management equipment are shown in Figure 8b, including the following steps:

The network management device receives the first information sent by the access network device;

The network management device judges whether the first information sent by at least two access network devices is received;

If the first information sent by at least two access network devices is received, the network management device sends second information to each of the at least two access network devices, where the second information is used to indicate the The access network equipment measures the phase deviation of the access network equipment;

The network management device determines the target location of the interfering device according to the received phase deviation.

Among them, the network management device can calculate the distance difference between each interfered access network device and the interfering device based on the received phase deviation. Combined with the location of each interfered access network device, multi-point joint calculation can determine the target location of the interfering device.

Optionally, the calculation process for the network management device to determine the target location of the interfering device is described in detail below.

Suppose that in a certain area, the interfered access network equipment includes A site, B site, and C site. Among them, the location of site A is P _A , the location of site B is P _B , and the location of site C is P _C. Assume that the position of the interfering device X is P _X. The distance from each site to the interfering device X can be calculated according to the following formula:

S _AX =|P _A -P _X |

S _BX =|P _B -P _X |

S _CX =|P _C -P _X |

Among them, S _AX represents the distance from site A to the interfering device X, S _BX represents the distance from site B to the interfering device X, and S _CX represents the distance from site C to the interfering device X.

The time difference between each interfered access network device and interfering device X can be calculated according to the following formula:

T _AB ＝|T _A -T _B |

T _BC ＝|T _B -T _C |

Among them, T _A represents the deviation between the 1pps of the _{OCXO local clock at site A and the 1pps output by the GPS star card at site A, and T B} represents the 1pps of the OCXO local clock at site B and the 1pps output by the GPS star card at site A T _C represents the deviation between 1pps of the OCXO local clock at site C and the 1pps output of the GPS star card at site A. T _AB represents the time difference between site A, site B and interfering device X, and T _BC represents the time difference between site B and site C and interfering device X.

The time difference can be converted to the distance difference according to the following formula (C represents the speed of light, 300,000,000 meters/second):

L _AB ＝T _AB *C

L _BC ＝T _BC *C

Among them, L _AB represents the distance difference between site A and the interfering device X and the distance between site B and the interfering device X, and L _BC represents the distance difference between the site B and the interfering device X and the distance between the C site and the interfering device X.

The relationship between distance difference and time difference can be determined according to the following formula:

|S _AX -S _BX |=L _AB ＝T _AB *C

|S _BX -S _CX |=L _BC ＝T _BC *C

Then the following positional relationships can be further derived:

||P _A -P _X |-|P _B -P _X ||=|T _A -T _B |*C

||P _B -P _X |-|P _C -P _X ||=|T _B -T _C |*C

Since latitude and longitude information of three sites P _A, P _B and P _C are known, each GPS satellite site card output skew T _A, T _B and T _C are also known. Solving the equations according to the above two formulas can obtain the location information of the interfering device X, that is, determining the target location of the interfering device. The specific calculation method refers to the solution of the hyperbolic equation, which will not be repeated in this embodiment.

The following describes in detail the related devices of the embodiment of the present application with reference to FIG. 9 and FIG. 10.

An embodiment of the present application provides a schematic structural diagram of a positioning device. As shown in FIG. 9, the positioning device 900 can be used to implement the network management device in the embodiment shown in FIG. The positioning method performed by a combination of device functions. The positioning device 900 may include:

The receiving unit 901 is configured to receive first information respectively sent by at least two access network devices, where the first information is used to indicate that the access network device receives an interference signal sent by an interference device;

The sending unit 902 is configured to send second information to each of the at least two access network devices, where the second information is used to instruct the access network device to measure the access network device's Phase deviation

The determining unit 903 is configured to determine the target location of the interference device according to the phase deviation measured by each of the access network devices.

In an implementation manner, the determining unit 903 is specifically configured to:

In an implementation manner, the determining unit 903 is further configured to:

In an implementation manner, the target position is a position in an intersection of the first set of predicted positions and the second set of predicted positions.

In an implementation manner, the determining unit 903 is further configured to:

According to multiple predicted locations in the intersection of the at least two predicted location sets, determine that the predicted location closest to the center point of the distribution area in the distribution area formed by the multiple predicted locations is the target location of the interfering device .

In an implementation manner, the sending unit 902 is further configured to:

The target position of the interfering device is sent to the execution device, so that the execution device outputs the target position of the interfering device, and the target position output by the execution device is used to instruct to turn off the interfering device.

It should be noted that the content not mentioned in the embodiment corresponding to FIG. 9 and the specific implementation manners of the execution steps of each unit can be referred to the embodiment shown in FIG. 3 and the foregoing content, which will not be repeated here.

In an implementation manner, the related functions implemented by each unit in FIG. 9 can be implemented in combination with a processor and a communication interface. Refer to FIG. 10, which is a schematic structural diagram of a positioning device provided by an embodiment of the present application. The device may be a network management device or a device (such as a chip) having a function of a network management device. The positioning apparatus 1000 may include a communication interface 1001, a processor 1002, and a memory 1003. Wherein, the communication interface 1001, the processor 1002, and the memory 1003 may be connected to each other through one or more communication buses, or may be connected in other ways.

Wherein, the communication interface 1001 can be used to send data and/or signaling, and receive data and/or signaling. It can be understood that the communication interface 1001 is a general term and may include one or more interfaces. For example, it includes the interface between the positioning device and other equipment.

The processor 1002 may be configured to process data and/or signaling sent by the communication interface 1001, or process data and/or signaling received by the communication interface 1001. For example, the processor 1002 may call the program code stored in the memory 1003, and implement the communication process through the communication interface 1001. The processor 1002 may include one or more processors. For example, the processor 1002 may be one or more central processing units (CPU), network processors (NP), hardware chips, or any combination thereof . In the case where the processor 1002 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

Among them, the memory 1003 is used to store program codes and the like. The memory 1003 may include a volatile memory (volatile memory), such as random access memory (random access memory, RAM); the memory 1003 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (read-only memory). Only memory (ROM), flash memory (flash memory), hard disk drive (HDD), or solid-state drive (SSD); the memory 1003 may also include a combination of the foregoing types of memories.

The aforementioned communication interface 1001 and the processor 1002 can be used to implement the positioning method executed by the network management device in the embodiment shown in FIG. 3, where the processor 1002 calls the code in the memory 1003, and specifically executes the following steps:

Receiving, through the communication interface 1001, first information respectively sent by at least two access network devices, where the first information is used to indicate that the access network device has received an interference signal sent by an interference device;

Send second information to each of the at least two access network devices through the communication interface 1001, where the second information is used to instruct the access network device to measure the phase deviation of the access network device ；

Determine the target location of the interfering device according to the phase deviation measured by each of the access network devices.

In an implementation manner, the processor 1002 is further configured to:

The target position of the interfering device is sent to the execution device through the communication interface 1001, so that the execution device outputs the target position of the interfering device, and the target position output by the execution device is used to instruct to turn off the interfering device.

The embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium including a program or instruction, when the program or instruction is run on a computer, the computer is caused to execute what is executed by the network management device in the foregoing method embodiment Positioning method.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (for example, a solid state disk (Solid State Disk, SSD)) etc.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of both, in order to clearly illustrate the hardware and software Interchangeability, in the above description, the composition and steps of each example have been generally described in accordance with the function. Whether these functions are performed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A positioning method, characterized in that it comprises:

Receiving first information respectively sent by at least two access network devices, where the first information is used to indicate that the access network device has received an interference signal sent by an interference device;

Sending second information to each of the at least two access network devices, where the second information is used to instruct the access network device to measure the phase deviation of the access network device;

Determine the target location of the interfering device according to the phase deviation measured by each of the access network devices.
The method according to claim 1, wherein the determining the target location of the interfering device according to the phase deviation measured by each of the access network devices comprises:

Selecting m access network devices from the at least two access network devices, the number of the at least two access network devices is n, 2≤m≤n;

For any one of the m access network devices, determine the distance difference between the interference device and the access network device according to the phase deviation of the access network device;

According to the determined m distance differences, the target position of the interfering device is determined.
The method according to claim 2, wherein the determining the target location of the interfering device according to the determined m distance differences comprises:

Determine a first distance difference, a second distance difference, and a third distance difference among the m distance differences;

Determine a first set of predicted positions of the interfering device according to the first distance difference and the third distance difference;

Determine a second set of predicted positions of the interfering device according to the second distance difference and the third distance difference;

Determine the target position of the interfering device according to the first set of predicted positions and the second set of predicted positions.
The method according to claim 3, wherein the target position is a position in the intersection of the first set of predicted positions and the second set of predicted positions.
The method according to claim 2, wherein the determining the target location of the interfering device according to the determined m distance differences comprises:

Determine at least two sets of predicted positions according to the m distance differences;

Determining an intersection of the at least two predicted position sets according to the at least two predicted position sets, where the intersection of the at least two predicted position sets includes one or more predicted positions;

It is determined that any one predicted location in the intersection of the at least two predicted location sets is the target location of the interfering device.
The method according to claim 5, wherein the intersection of the at least two predicted position sets includes a plurality of predicted positions; and the at least two predicted position sets are determined according to the at least two predicted position sets After the intersection of, the method further includes:

According to multiple predicted locations in the intersection of the at least two predicted location sets, determine that the predicted location closest to the center point of the distribution area in the distribution area formed by the multiple predicted locations is the target location of the interfering device .
The method according to claim 1, wherein the method further comprises:

The target position of the interfering device is sent to the execution device, so that the execution device outputs the target position of the interfering device, and the target position output by the execution device is used to instruct to turn off the interfering device.
A positioning device is characterized in that it comprises:

A receiving unit, configured to receive first information respectively sent by at least two access network devices, where the first information is used to indicate that the access network device has received an interference signal sent by an interference device;

The sending unit is configured to send second information to each of the at least two access network devices, where the second information is used to instruct the access network device to measure the phase of the access network device deviation;

The determining unit is configured to determine the target location of the interference device according to the phase deviation measured by each of the access network devices.
The apparatus according to claim 8, wherein the determining unit is specifically configured to: when determining the target location of the interfering device according to the phase deviation measured by each of the access network devices:

Selecting m access network devices from the at least two access network devices, the number of the at least two access network devices is n, 2≤m≤n;

For any one of the m access network devices, determine the distance difference between the interference device and the access network device according to the phase deviation of the access network device;

According to the determined m distance differences, the target position of the interfering device is determined.
The apparatus according to claim 9, wherein the determining unit is specifically configured to: when determining the target location of the interfering device according to the determined m distance differences:

Determine a first distance difference, a second distance difference, and a third distance difference among the m distance differences;

Determine a first set of predicted positions of the interfering device according to the first distance difference and the third distance difference;

Determine a second set of predicted positions of the interfering device according to the second distance difference and the third distance difference;

Determine the target position of the interfering device according to the first set of predicted positions and the second set of predicted positions.
The apparatus according to claim 10, wherein the target position is a position in an intersection of the first set of predicted positions and the second set of predicted positions.
The apparatus according to claim 9, wherein the determining unit is specifically configured to: when determining the target location of the interfering device according to the determined m distance differences:

Determine at least two sets of predicted positions according to the m distance differences;

Determining an intersection of the at least two predicted position sets according to the at least two predicted position sets, where the intersection of the at least two predicted position sets includes one or more predicted positions;

It is determined that any one predicted location in the intersection of the at least two predicted location sets is the target location of the interfering device.
The apparatus according to claim 12, wherein the intersection of the at least two predicted position sets includes multiple predicted positions; and the determining unit is further configured to:

According to multiple predicted locations in the intersection of the at least two predicted location sets, determine that the predicted location closest to the center point of the distribution area in the distribution area formed by the multiple predicted locations is the target location of the interfering device .
The device according to claim 8, wherein the sending unit is further configured to:

The target position of the interfering device is sent to the execution device, so that the execution device outputs the target position of the interfering device, and the target position output by the execution device is used to instruct to turn off the interfering device.
A positioning device, characterized in that it comprises a memory and a processor;

The memory is used to store program code;

The processor is configured to execute the code in the memory, so that the positioning device executes the method according to any one of claims 1-7.
A computer-readable storage medium, characterized by comprising a program or instruction, when the program or instruction runs on a computer, the method according to any one of claims 1 to 7 is executed.