CN114731484A - Positioning method and device thereof - Google Patents

Positioning method and device thereof Download PDF

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Publication number
CN114731484A
CN114731484A CN201980102270.4A CN201980102270A CN114731484A CN 114731484 A CN114731484 A CN 114731484A CN 201980102270 A CN201980102270 A CN 201980102270A CN 114731484 A CN114731484 A CN 114731484A
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access network
determining
predicted
equipment
interference
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许永毅
王仁为
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a positioning method and a device thereof, wherein the positioning method can be applied to network management equipment, wherein the network management equipment receives first information respectively sent by at least two access network equipment and sends second information to each access network equipment in the at least two access network equipment so that the access network equipment measures the phase deviation of the access network equipment. And determining the target position of the interference equipment according to the phase deviation measured by each access network equipment. By adopting the positioning method, the network management equipment can quickly position the interference equipment.

Description

Positioning method and device thereof Technical Field
The embodiment of the application relates to the field of communication, in particular to a positioning method and a positioning device.
Background
In a communication network, clock synchronization is usually required to keep the difference in frequency or time between network-wide communication devices within a certain error range, so as to avoid the transmission performance deterioration caused by the inaccuracy of the receiving/signaling timing in the transmission system. Common clock synchronization schemes include clock synchronization schemes based on a satellite network, such as a Global Positioning System (GPS), a beidou time service system, and a global satellite navigation system (GLONASS). However, the clock synchronization scheme based on the satellite network has the problems of weak signal strength and easy interference. For example, if there is a pseudo GPS device, the pseudo GPS signal transmitted by the pseudo GPS device may cause a base station clock phase error, resulting in a problem of base station traffic interference. How to quickly find the pseudo-GPS signal source becomes a problem to be solved.
Disclosure of Invention
The embodiment of the application provides a positioning method, which can quickly position interference equipment, so that the influence of the interference equipment is reduced.
In a first aspect, an embodiment of the present application provides a positioning method, which may be executed by a network management device. The network management equipment receives first information respectively sent by at least two access network equipment, wherein the first information is used for indicating the access network equipment to receive an interference signal sent by interference equipment. And the network management equipment sends second information to each access network equipment in the at least two access network equipment, wherein the second information is used for indicating the access network equipment to measure the phase deviation of the access network equipment. And the network management equipment determines the target position of the interference equipment according to the phase deviation measured by each access network equipment. By adopting the positioning method, the network management equipment can quickly position the interference equipment.
In a possible design, the network management device selects m access network devices from the at least two access network devices, where the number of the at least two access network devices is n, and m is greater than or equal to 2 and less than or equal to n. And aiming at any access network equipment in the m access network equipment, the network management equipment determines the distance difference between the interference equipment and the access network equipment according to the phase deviation of the access network equipment. And determining the target position of the interference equipment according to the m distance differences. Therefore, the network management device can determine the distance difference between the interfering device and the interfered access network device according to the phase deviation measured by at least two interfered access network devices, so as to determine the target position of the interfering device.
In one possible embodiment, the network management device determines the first distance difference, the second distance difference and the third distance difference from the m distance differences. Determining a first set of predicted locations of the interfering device according to the first range difference and the third range difference; determining a second set of predicted locations of the interfering device based on the second range difference and the third range difference. Determining a target location of the interfering device based on the first set of predicted locations and the second set of predicted locations. When the three interfered access network devices participate in calculating the distance difference between the interfering device and the interfered access network device, the positioning accuracy of the interfering device can be improved.
In one possible design, the target location is one location in an intersection of the first set of predicted locations and the second set of predicted locations.
In one possible design, the network management device determines at least two sets of predicted locations according to the m distance differences. Determining an intersection of the at least two sets of predicted locations from the at least two sets of predicted locations, the intersection of the at least two sets of predicted locations comprising one or more predicted locations. Determining any predicted location in the intersection of the at least two sets of predicted locations as a target location of the interfering device.
In a possible design, the network management device determines, according to a plurality of predicted positions in an intersection of the at least two predicted position sets, a predicted position in a distribution area formed by the plurality of predicted positions, which is closest to a central point of the distribution area, as a target position of the interfering device.
In a possible design, the network management device sends the target location of the interfering device to the executing device, so that the executing device outputs the target location of the interfering device, and the target location output by the executing device is used to instruct to turn off the interfering device.
In a second aspect, an embodiment of the present application provides a positioning apparatus, where the apparatus has a function of implementing the positioning method provided in the first aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
In a third aspect, an embodiment of the present application provides a positioning apparatus, which includes a processor and is configured to implement the functions or methods mentioned in the first aspect, and the positioning apparatus may be, for example, a system on a chip. In a possible implementation form, the positioning device further comprises a memory for storing program instructions and data necessary for implementing the functions of the method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium including a program or instructions, which when executed on a computer, causes the computer to perform the method of the first aspect or any of the possible implementations of the first aspect.
The system-on-chip in the above aspect may be a system-on-chip (SOC), a baseband chip, and the like, where the baseband chip may include a processor, a channel encoder, a digital signal processor, a modem, an interface module, and the like.
In a fifth aspect, an embodiment of the present application provides a chip or a chip system, where the chip or the chip system includes at least one processor and a communication interface, where the communication interface and the at least one processor are interconnected by a line, and the at least one processor is configured to execute a computer program or instructions to perform the method described in any one of the possible implementation manners of the first aspect to the first aspect.
The communication interface in the chip may be an input/output interface, a pin, a circuit, or the like.
In one possible implementation, the chip or chip system described above in this application further comprises at least one memory having instructions stored therein. The memory may be a storage unit inside the chip, such as a register, a cache, etc., or may be a storage unit of the chip (e.g., a read-only memory, a random access memory, etc.).
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 2a is a schematic diagram of a communication scenario provided in an embodiment of the present application;
fig. 2b is a schematic diagram of an interference scenario provided in the present application;
fig. 3 is a schematic flowchart of a positioning method according to an embodiment of the present disclosure;
FIG. 4 is a block diagram of a base station clock;
FIG. 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 interfering device according to an embodiment of the present disclosure;
fig. 7a is a schematic diagram of a target location of an interfering device according to an embodiment of the present disclosure;
fig. 7b is a schematic diagram of a target location of an interfering device according to an embodiment of the present disclosure;
fig. 7c is a schematic diagram of a target location of an interfering device according to an embodiment of the present application
Fig. 8a is a schematic flowchart of a positioning method according to an embodiment of the present application;
fig. 8b is a schematic flowchart of a positioning method according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a positioning device according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a positioning device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Prior to the description of the embodiments of the present application, the related background art is first introduced.
In a communication network, clock synchronization is usually required to keep the difference in frequency or time between network-wide communication devices within a certain error range, so as to avoid the transmission performance deterioration caused by the inaccuracy of the receiving/signaling timing in the transmission system. For example, communication between an access network device (e.g., a base station) and a terminal device (e.g., a handset) may be via an uplink channel and a downlink channel. The access network device is connected to the terminal device through a downlink channel, and the terminal device is connected to the access network device through an uplink channel. The up/down channels are staggered in time when in operation. If the uplink/downlink channel transmits data at the same time, the uplink channel of the terminal device is interfered due to the high power of the downlink channel of the access network device, thereby causing the failure of data transmission of the uplink channel. Therefore, each access network device and each terminal device need to perform clock synchronization, so as to avoid uplink/downlink data interference.
In one example, access network devices in a certain area may be managed by a network management device. Referring to fig. 1, in a communication system shown in fig. 1, the communication system includes a network management device 110, an access network device 120, and a terminal device 130. Optionally, the communication system may further include a plurality of access network devices and/or a plurality of terminal devices, which is not limited in this embodiment.
The network management device 110 is configured to manage access network devices located in a management area of the network management device 110. For example, the network management device 110 is configured to collect communication conditions of the access network device 120, or send control information to the access network device 120. The network management device 110 may include, but is not limited to, a server (server), a cloud platform (cloud platform), a Virtual Machine (VM), and other devices with certain computing capabilities.
The access network device 120 may provide a network access function for authorized users in a specific area, and may determine different quality transmission tunnels to transmit user data according to user level, service requirement, and the like. The access network device 120 may be, for example, a base station (e.g., eNB) in an LTE system or a base station (e.g., NG-RAN) in a New Radio (NR) system, a base station of a 3GPP subsequent evolution, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and so on. The base station may be a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc.
The terminal device 130 is a device having a wireless transceiving function. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wearable terminal device, and so on. A terminal device may also sometimes be referred to as a terminal, User Equipment (UE), access terminal device, in-vehicle terminal, industrial control terminal, UE unit, UE station, mobile station, remote terminal device, mobile device, UE agent, or UE device, etc. The terminal equipment may also be fixed or mobile.
In one example, the network management device 110 may include a plurality of access network devices within the management area, as shown in fig. 2 a. In the communication scenario shown in fig. 2a, the access network device 120, the access network device 121, the access network device 122 and the accessed terminal device 130 managed by the network management device 110 may perform clock synchronization by using a clock synchronization scheme. Common clock synchronization schemes include clock synchronization schemes based on satellite networks, such as Global Positioning System (GPS), beidou time service system, and global navigation satellite system (GLONASS). However, the clock synchronization scheme based on the satellite network has the problems of weak signal strength and easy interference. For example, GPS interference mainly affects signal transmission and reception between a base station and a terminal. If the pseudo-GPS device exists, a pseudo-GPS signal transmitted by the pseudo-GPS device may cause a base station clock phase error, resulting in a problem of base station traffic 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. The access network device 120 and the access network device 121 are located in an area capable of receiving the interference signal sent by the interference device 140, and the access network device 122 does not receive the interference signal sent by the interference device 140. When interfering device 140 sends interfering signals to access network device 120 and access network device 121 with a strong power, it will affect the clock synchronization of access network device 120 and access network device 121. Wherein the time information of the interfering device 140, the access network device 120, the access network device 121, and the access network device 122 is shown in table 1.
Table 1: time information table of interference equipment and access network equipment
Device name Local time Time after receiving interference signal
Jamming device
140 12:00 12:00
Access network device 120 18:00 12:00
Access network equipment 121 18:00 12:00
Access network device 122 18:00 18:00
It can be seen that, after access network device 120 and access network device 121 receive the interference signal, the times of access network device 120 and access network device 121 are brought in error, and are no longer synchronized with the clock of access network device 122. In a possible case, since the clocks of the access network device 121 and the access network device 122 are not synchronized, when the terminal device 130 in the coverage of the access network device 122 transmits data to the access network device 122 through the uplink channel, the access network device 121 may open the downlink channel to transmit data. The downlink data sent by the access network device 121 may interfere with the communication between the terminal device 130 and the access network device 122, so that the uplink data transmission of the terminal device 130 fails, as shown in fig. 2 b. It can be seen that how to quickly find the location of the interfering device to avoid service interference becomes a problem to be solved.
In order to solve the above problem, an embodiment of the present application provides a positioning method, which may be executed by a network management device, and determine a target position of the interfering device by indicating an access network device to measure a phase offset of the access network device and according to the phase offset measured by each access network device. The method can quickly locate the interference equipment, thereby reducing the influence of the interference equipment.
The following description will be made in conjunction with specific embodiments.
An embodiment of the present application provides a positioning method, please refer to fig. 3. The positioning method can be executed by network management equipment and comprises the following steps:
s301, first information sent by at least two access network devices respectively is received, and the first information is used for indicating the access network devices to receive interference signals sent by interference devices.
After receiving the interference signal sent by the interference device, the access network device may send first information to the network management device to notify the network management device that the access network device is interfered. The access network device may determine whether to receive the interference signal sent by the interference device in the following manners. For example, the access network device receives an abnormal GPS signal, which is a signal transmitted by a GPS satellite whose GPS satellite number does not coincide with the local overhead GPS satellite number. The access network device may determine that an interfering signal transmitted by the interfering device is received. For another example, when the phase of the GPS signal received by the access network device is abnormal and compared with the phase of the local clock output, the phase of the local clock is jumped. The access network device may determine that an interfering signal transmitted by the interfering device is received. If the network management equipment receives the first information respectively sent by at least two interfered access network equipment, the interference positioning function can be started to determine the target position of the interference equipment.
S302, 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 a phase offset of the access network device.
In order to quickly locate the target position 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 devices to measure the phase offset of the access network devices. 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 respective phase deviations.
In one example, the phase offset of the access network device refers to a phase offset between a pulse signal (1pps, pulse per second) of a local clock of an Oven Controlled Crystal Oscillator (OCXO) of the access network device and a pulse signal (1pps) output by a GPS satellite card of the access network device. Referring to fig. 4, a general structure of a clock system of an access network deviceAs shown in fig. 4. Common structures of the clock system may include, but are not limited to, a phase detector, an OCXO high stability crystal oscillator, and the like. The OCXO high-stability crystal oscillator consists of a quartz crystal oscillator and a peripheral circuit and is used for outputting local 1pps and 10MHz working frequency. The phase detector is used for comparing the deviation between the clock output by the GPS star card and the local crystal clock, for example, comparing the phase deviation between local 1pps and GPS1pps shown in FIG. 4. If the phase deviation between the local 1pps and the GPS1pps exceeds a preset threshold value, the clock system adjusts the local 1pps to enable the local clock to be consistent with the clock output by the GPS satellite card, and therefore clock synchronization is achieved. For example, the OCXO is a local clock of the access network device, which is equivalent to a watch of a person. The GPS clock is equivalent to the integral point time reporting of the radio station and is used for time synchronization of the watch. It should be noted that the offset between the local 1pps of the access network device and the GPS1pps in this embodiment corresponds to a time value. Referring to fig. 5, fig. 5 is a schematic diagram of a pulse signal of a local clock and a pulse signal output by a GPS satellite card. As can be seen from fig. 5, the phase offset between the local 1pps and the GPS1pps corresponds to the time T. For example, the interfered access network device 1 measures a phase deviation of T1The phase deviation measured by the interfered access network equipment 2 is T2。
And S303, determining the target position of the interference equipment according to the phase deviation measured by each access network equipment.
After the interfered access network device measures the phase deviation, the measured phase deviation is sent to the network management device. For example, the network management device receives the phase deviation T transmitted from the interfered access network device 11Receiving the phase offset T transmitted from the interfered access network device 22. Wherein, T1And T2Is a time value. According to the distance calculation formula Ln＝T nC, the network management device may determine a distance between each interfered access network device and the interfering device. Wherein L isnIndicating the distance, T, of the interfered access network device n from the interfering devicenIndicating the measured phase deviation of the interfered access network device n and C the speed of light. Network management equipment is confirmingAfter the distance between each interfered access network device and the interference device is determined, the position of the interference device can be determined by combining the position of each interfered access network device. For example, the network management device receives the phase deviation T measured by the interfered access network device 11The phase deviation measured by the access network device 2 receiving the interference is T2. Then, according to the distance calculation formula, the network management device can determine that the distance between the access network device 1 and the interference device is L1Determining the distance between the access network equipment 2 and the interference equipment as L2. Suppose that the distance between the access network device 1 and the access network device 2 is D12Then, the network management device may determine that the absolute value of the distance difference between the interfering device and the access network device 1 or 2 is a constant, i.e. | L1-L 22a, wherein 0<2a<|D 12L. Note that, | L1-L 2The term "2 a" is defined as a hyperbola, that is, the locus of the interfering device is a point P corresponding to the position of the access network device 11A point P corresponding to the location of the access network device 22Is a hyperbola of the focus, as shown in fig. 6. The network management device may 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 fig. 6 is located.
Optionally, after determining the target location of the interfering device, the network management device may further perform the following steps:
and the network management equipment sends the target position of the interference equipment to execution equipment so that the execution equipment outputs the target position of the interference equipment, and the target position output by the execution equipment is used for indicating to close the interference equipment.
After the network management device determines the target position of the interference device, the target position of the interference device can be sent to the execution device. Wherein the execution device is configured to output a target location of the interfering device. Optionally, the manner of outputting the target position of the interfering device by the execution device may be displaying the target position of the interfering device through a display interface of the execution device, or generating 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, including the latitude and longitude and the height of the target location, may be displayed on the display interface of the execution device. The user can inform related personnel of closing the interference equipment at the target position through the target position of the interference equipment displayed on the display interface. For another example, the execution device sends a short message or an email to the designated address to notify the relevant person to go to the target location and close the interference device. The specific implementation manner of the present embodiment is not limited.
The embodiment of the application provides a positioning method, which can be executed by network management equipment. After receiving the first information respectively sent by the at least two interfered access network devices, the network management device sends second information to each interfered access network device to indicate the access network device to measure respective phase deviation. And determining the target position of the interference equipment according to the phase deviation measured by each interfered access network equipment. Therefore, the positioning method provided by the embodiment of the application can be used for quickly positioning the interference equipment, so that the influence of the interference equipment is reduced. In addition, by adopting the positioning method, the network management equipment can automatically start the positioning function after receiving the first information from the access network equipment, thereby avoiding the manual large-range frequency sweep search from interfering the position of the equipment, saving the labor cost and improving the processing efficiency.
The following describes in detail the step of determining, by the network management device, the target location of the interfering device according to the phase deviation measured by each access network device.
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 may be determined. The network management device determines the target position of the interfering device according to the phase deviation measured by each access network device, which may specifically include the following steps:
selecting m access network devices from the at least two access network devices, wherein the number of the at least two access network devices is n, and m is more than or equal to 2 and less than or equal to n;
for any access network device in the m access network devices, determining a distance difference between the interference device and the access network device according to the phase deviation of the access network device;
and determining the target position of the interference equipment according to the m distance differences.
For example, it is assumed that in a certain area, the interfered access network devices are access network device 1, access network device 2, and access network device 3, that is, the number of interfered access network devices is 3, and n is 3. The network management device may select 2 access network devices from the interfered access network devices, that is, m is 2. It is assumed that the access network devices selected by the network management device are the access network device 1 and the access network device 2. The access network device 1 and the access network device 2 measure respective phase deviations respectively and send the measurement results to the network management device. The network management equipment receives the phase deviation T of the access network equipment 11And phase offset T of access network device 22. The network management device may determine the distance difference L between the interfering device and the access network device 11＝T 1C, difference of distance L between interfering device and access network device 22＝T 2C. According to the definition of the hyperbola, the network management device may determine that the interfering device is located at a certain point of the hyperbola, i.e. 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 position of the interfering device may be determined. Compared with the network management equipment which determines the running track of the interference equipment according to the two distance differences, the scheme can improve the positioning accuracy. The network management device determines the target location of the interfering device according to the m distance differences obtained by the determination, and specifically may include the following steps:
determining a first distance difference, a second distance difference, and a third distance difference among the m distance differences;
determining a first set of predicted locations of the interfering device according to the first range difference and the third range difference;
determining a second set of predicted locations of the interfering device according to the second range difference and the third range difference;
determining a target location of the interfering device based on the first set of predicted locations and the second set of predicted locations.
For example, it is assumed that in a certain area, the interfered access network devices are access network device 1, access network device 2, access network device 3, and access network device 4, that is, the number of interfered access network devices is 4, and n is 4. The network management device may select 3 access network devices from the interfered access network devices, that is, m is 3. It is assumed that the access network devices selected by the network management device are the access network device 1, the access network device 2 and the access network device 4. The access network device 1, the access network device 2 and the access network device 4 measure respective phase deviations respectively and send the measurement results to the network management device. The network management equipment receives the phase deviation T of the access network equipment 11Phase deviation T of access network device 22And phase offset T of access network equipment 44. The network management device may determine the distance difference L between the interfering device and the access network device 11＝T 1C, distance difference L of interfering device from access network device 22＝T 2C, difference of distance L between interfering device and access network device 44＝T 4C. According to the distance difference L1Sum distance difference L2The network management equipment can determine a hyperbola S1(ii) a According to the distance difference L2Sum distance difference L4The network management equipment can determine another hyperbola S2. It should be noted that the network management device can also use the distance difference L as the distance difference1Sum distance difference L4Determining a hyperbola S3This embodiment is not limited. Then a hyperbola S1And a hyperbola S2Point of intersection P12I.e. the target position of the interfering device, as shown in fig. 7 a. It is understood that the first and second predicted position sets are sets of points on different hyperbolas.
In an example, if the network management device obtains phase deviations of more than three interfered access network devices, a target position of the interfering device may 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 position of the interference source. The network management device determines the target location of the interfering device according to the m distance differences obtained by the determination, and specifically may include the following steps:
determining at least two sets of predicted positions according to the m distance differences;
determining an intersection of the at least two sets of predicted locations from the at least two sets of predicted locations, the intersection of the at least two sets of predicted locations comprising one or more predicted locations;
determining any predicted location in the intersection of the at least two sets of predicted locations as a target location of the interfering device.
For example, it is assumed that in a certain area, the interfered access network devices are access network device 1, access network device 2, access network device 3, and 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. And each interfered access network device sends the measurement result to the network management device. Correspondingly, the network management equipment receives the phase deviation T of the access network equipment 11Phase deviation T of access network device 22Phase deviation T of access network device 33And phase offset T of access network equipment 44. The network management device may determine the distance difference L between the interfering device and the access network device 11＝T 1C, difference of distance L between interfering device and access network device 22＝T 2C, difference of distance L between interfering device and access network device 33＝T 3C, difference of distance L between interfering device and access network device 44＝T 4*C。
The following description takes the network management device to determine 3 hyperbolas as an example. According to the distance difference L1Sum distance difference L2The network management equipment can determine a hyperbola S1. According to the distance difference L2Sum distance difference L3The network management equipment can determine a hyperbola S2. According to the distance difference L1Sum distance difference L4The network management equipment can determine a hyperbola S3. It should be noted that the network management device may also determine more hyperbolas according to a combination of a plurality of different distance differences, which is not limited in this embodiment. Wherein the hyperbola S1And a hyperbola S2Has a point of intersection of P12Hyperbolic curve S2And a hyperbola S3Has a point of intersection of P23As shown in fig. 7 b. It is to be understood that the intersection of the at least two sets of predicted positions comprises an intersection point P12And P23. If there are multiple intersection points in other hyperbolas, the intersection of the at least two prediction location sets further includes the multiple intersection points, which is not limited in this embodiment. The network management device may determine any one of the predicted positions (e.g., P) in the intersection of the at least two sets of predicted positions12) Is the target location of the interfering device.
In a possible case, if the intersection of the at least two prediction position sets includes multiple prediction positions, the network management device may determine, as the target position of the interfering device, a prediction position closest to a central point of a distribution area formed by the multiple prediction positions. For example, referring to fig. 7c, the network management device determines, according to the distance difference between the 4 interfered access network devices in fig. 7c, that the intersection of the at least two prediction position sets includes 4 prediction positions P respectively12、P 23、P 34And P35. Firstly, the network management equipment judges the distance difference between the 4 predicted positions, and if the distance difference exceeds a preset threshold, the point of which the distance difference exceeds the preset threshold is deleted from the intersection of the predicted position set. For example, 4 predicted positions P as shown in FIG. 7c12、P 23、P 34And P35In, due to P12And P23、P 34、P 35If the distance differences exceed the preset threshold, the network management device first excludes the P when determining the target position of the interfering device12. Then according to P23、P 34、P 35Forming a distribution area (shown as a dotted circle in FIG. 7 c), and determining a predicted position P closest to a center point of the distribution area (shown as a center of the dotted circle in FIG. 7 c)35Is the target location of the interfering device. It should be noted that fig. 7c is only an example, and the embodiment is not limited thereto.
In the following, the overall flow of the positioning method provided by the embodiments of the present application is exemplarily described in conjunction with the description in the above embodiments. Referring to fig. 8a and 8b, the overall process includes steps executed by the access network device and steps executed by the network management device. The steps executed by the access network device are shown in fig. 8a, and include the following steps:
after the access network equipment is started to operate, the GPS satellite card receives a GPS signal and outputs information such as a clock, a position and the like;
the access network equipment periodically checks data such as the number of GPS satellites used by the GPS satellite card, the serial numbers of the GPS satellites, the signal-to-noise ratio of the satellites and the like;
the access network equipment judges whether an interference signal exists or not;
if the interference signal exists, the access network equipment sends first information to the network management equipment, wherein the first information is used for indicating the access network equipment to receive the interference signal sent by the interference equipment;
if no interference signal exists, the access network equipment continues to periodically check the GPS satellite card.
The access network device may determine whether an interference signal exists by checking a GPS satellite number. For example, an access network device typically receives signals transmitted from 10 GPS satellites simultaneously. The access network equipment compares the received GPS satellite number with a preset received GPS satellite number, and if the GPS satellite number inconsistent with the preset received GPS satellite number exists, the access network equipment determines that an interference signal exists. Optionally, the access network device may determine whether there is an interference signal by determining a clock phase change output by the GPS satellite card. For example, if the clock phase output by the GPS star card is shifted (e.g., 90 degrees phase offset), the access network device may determine that an interfering signal is present.
After the access network device performs the steps shown in fig. 8a, please refer to fig. 8b, the network management device may continue to perform the steps shown in fig. 8b to determine the target location of the interfering device. The steps executed by the network management device are shown in fig. 8b, and include the following steps:
the network management equipment receives first information sent by access network equipment;
the network management equipment judges whether first information sent by at least two access network equipment is received or not;
if first information sent by at least two access network devices is received, the network management device sends second information to each access network device of the at least two access network devices, and the second information is used for indicating the access network devices to measure the phase deviation of the access network devices;
and the network management equipment determines the target position of the interference equipment according to the received phase deviation.
The network management device can calculate the distance difference between each interfered access network device and the interference device according to the received phase deviation. And determining the target position of the interference equipment by combining the positions of the interfered access network equipment and multipoint joint calculation.
Optionally, a detailed description is given below of a calculation process of determining, by the network management device, the target location of the interfering device.
It is assumed that in a certain area, the interfered access network devices include a site a, a site B and a site C. Wherein, the position of the A station is PAB site location is PBC site location is PC. Suppose interfering device X is at position PX. The distance of each station 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|
wherein S isAXDenotes the distance, S, of the station A to the interfering device XBXDenotes the distance, S, of the B station to the interfering device XCXIndicating the C-site distance to the interfering device X.
The time difference between each interfered access network device and the interfering device X may be calculated according to the following formula:
T AB＝|T A-T B|
T BC＝|T B-T C|
wherein, TARepresents the phase deviation between 1pps of the local clock of the A site OCXO and 1pps output by the A site GPS satellite card, TBRepresents the phase deviation between 1pps of the local clock of the B site OCXO and 1pps output by the A site GPS satellite card, TCAnd the phase deviation between 1pps of the local clock of the C site OCXO and 1pps output by the A site GPS satellite card is shown. T isABRepresents the time difference, T, between the A site, the B site and the interfering device XBCIndicating the time difference between the B site, the C site and the interfering device X.
The time difference can be converted to a distance difference (C stands for speed of light, 300000000 meters/second) according to the following equation:
L AB＝T AB*C
L BC＝T BC*C
wherein L isABRepresenting the difference in distance, L, from site A to interfering device X and site B to interfering device XBCRepresenting the difference in distance from B-site to interfering device X and C-site to interfering device X.
The distance difference versus time difference can be determined according to the following equation:
|S AX-S BX|＝L AB＝T AB*C
|S BX-S CX|＝L BC＝T BC*C
then the following positional relationship 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
due to three stations PA、P BAnd PCThe longitude and latitude position information of the satellite card is known, and GPS satellite cards of all stations output phase deviation TA、T BAnd TCAre also known. The equation is solved according to the above two formulas to obtain the position information of the interfering device X, i.e. to determine the target position of the interfering device. The specific calculation method refers to the solution of the hyperbolic equation, and details are not repeated in this embodiment.
The following describes the related device of the embodiment of the present application in detail with reference to fig. 9 and 10.
As shown in fig. 9, the positioning apparatus 900 may be used to implement a positioning method executed by a network management device in the embodiment shown in fig. 3, or a chip applied to the network management device, or other combined devices with network management device functions. The positioning device 900 may include:
a receiving unit 901, configured to receive first information 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;
a sending unit 902, configured to send second information to each access network device of the at least two access network devices, where the second information is used to instruct the access network device to measure a phase offset of the access network device;
a determining unit 903, configured to determine a target location of the interfering device according to the phase deviation measured by each access network device.
In an implementation manner, the determining unit 903 is specifically configured to:
selecting m access network devices from the at least two access network devices, wherein the number of the at least two access network devices is n, and m is more than or equal to 2 and less than or equal to n;
for any access network device in the m access network devices, determining a distance difference between the interference device and the access network device according to the phase deviation of the access network device;
and determining the target position of the interference equipment according to the m distance differences.
In one implementation, the determining unit 903 is further configured to:
determining a first distance difference, a second distance difference, and a third distance difference among the m distance differences;
determining a first set of predicted locations of the interfering device according to the first range difference and the third range difference;
determining a second set of predicted locations of the interfering device according to the second range difference and the third range difference;
determining a target location of the interfering device based on the first set of predicted locations and the second set of predicted locations.
In one implementation, the target location is one location in an intersection of the first set of predicted locations and the second set of predicted locations.
In an implementation manner, the determining unit 903 is specifically configured to:
determining at least two sets of predicted positions according to the m distance differences;
determining an intersection of the at least two sets of predicted locations from the at least two sets of predicted locations, the intersection of the at least two sets of predicted locations comprising one or more predicted locations;
determining any predicted location in the intersection of the at least two sets of predicted locations as a target location of the interfering device.
In one implementation, the determining unit 903 is further configured to:
and determining a predicted position which is closest to the central point of the distribution area in a distribution area formed by the predicted positions as the target position of the interference equipment according to the predicted positions in the intersection of the predicted positions.
In one implementation, the sending unit 902 is further configured to:
and sending the target position of the interference equipment to execution equipment so as to enable the execution equipment to output the target position of the interference equipment, wherein the target position output by the execution equipment is used for indicating to close the interference equipment.
It should be noted that, for details that are not mentioned in the embodiment corresponding to fig. 9 and specific implementation manners of the steps executed by each unit, reference may be made to the embodiment shown in fig. 3 and the foregoing details, which are not described herein again.
In one implementation, the relevant functions implemented by the various units in FIG. 9 may be implemented in connection with a processor and a communications interface. Referring to fig. 10, fig. 10 is a schematic structural diagram of a positioning device provided in the embodiment of the present application, where the positioning device may be a network management device or a device (e.g., a chip) having a function of the network management device. The positioning device 1000 may include a communication interface 1001, a processor 1002, and a memory 1003. The communication interface 1001, the processor 1002, and the memory 1003 may be connected to each other via one or more communication buses, or may be connected in other manners.
Among other things, communication interface 1001 may be used to transmit data and/or signaling and receive data and/or signaling. It is to be understood that communication interface 1001 is a generic term and may include one or more interfaces. For example, including interfaces between the positioning apparatus and other devices, etc.
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, processor 1002 may invoke program code stored in memory 1003 to implement communications procedures through communications interface 1001. The processor 1002 may include one or more processors, for example, the processor 1002 may be one or more Central Processing Units (CPUs), Network Processors (NPs), 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.
The memory 1003 is used to store program codes and the like. The memory 1003 may include volatile memory (volatile memory), such as Random Access Memory (RAM); the memory 1003 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD), or a solid-state drive (SSD); the memory 1003 may also include a combination of the above types of memories.
The communication interface 1001 and the processor 1002 may be configured to implement the positioning method executed by the network management device in the embodiment shown in fig. 3, where the processor 1002 calls a code in the memory 1003 to specifically execute the following steps:
receiving, by a communication interface 1001, first information sent by at least two access network devices, where the first information is used to indicate that the access network devices receive an interference signal sent by an interference device;
sending second information to each access network device of the at least two access network devices through a communication interface 1001, where the second information is used to instruct the access network device to measure a phase offset of the access network device;
and determining the target position of the interference equipment according to the phase deviation measured by each access network equipment.
In one implementation, the processor 1002 is further configured to:
selecting m access network devices from the at least two access network devices, wherein the number of the at least two access network devices is n, and m is more than or equal to 2 and less than or equal to n;
for any access network device in the m access network devices, determining a distance difference between the interference device and the access network device according to the phase deviation of the access network device;
and determining the target position of the interference equipment according to the m distance differences.
In one implementation, the processor 1002 is further configured to:
determining a first distance difference, a second distance difference, and a third distance difference among the m distance differences;
determining a first set of predicted locations of the interfering device according to the first range difference and the third range difference;
determining a second set of predicted locations of the interfering device according to the second range difference and the third range difference;
determining a target location of the interfering device based on the first set of predicted locations and the second set of predicted locations.
In one implementation, the target location is one location in an intersection of the first set of predicted locations and the second set of predicted locations.
In one implementation, the processor 1002 is further configured to:
determining at least two sets of predicted positions according to the m distance differences;
determining an intersection of the at least two sets of predicted locations from the at least two sets of predicted locations, the intersection of the at least two sets of predicted locations comprising one or more predicted locations;
determining that any predicted location in an intersection of the at least two sets of predicted locations is a target location of the interfering device.
In one implementation, the processor 1002 is further configured to:
and determining a predicted position which is closest to the central point of the distribution area in a distribution area formed by the predicted positions as the target position of the interference equipment according to the predicted positions in the intersection of the predicted positions.
In one implementation, the processor 1002 is further configured to:
the target location of the interfering device is sent to an executing device through the communication interface 1001, so that the executing device outputs the target location of the interfering device, and the target location output by the executing device is used for indicating to turn off the interfering device.
An embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium includes a program or an instruction, and when the program or the instruction runs on a computer, the computer is enabled to execute the positioning method executed by the network management device in the foregoing method embodiment.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (16)

  1. A method of positioning, comprising:
    receiving first information respectively sent by at least two access network devices, wherein the first information is used for indicating the access network devices to receive interference signals sent by interference devices;
    sending second information to each access network device of the at least two access network devices, where the second information is used to instruct the access network device to measure a phase offset of the access network device;
    and determining the target position of the interference equipment according to the phase deviation measured by each access network equipment.
  2. The method of 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, wherein the number of the at least two access network devices is n, and m is more than or equal to 2 and less than or equal to n;
    for any access network device in the m access network devices, determining a distance difference between the interference device and the access network device according to the phase deviation of the access network device;
    and determining the target position of the interference equipment according to the m distance differences.
  3. The method of claim 2, wherein determining the target location of the interfering device based on the determined m range differences comprises:
    determining a first distance difference, a second distance difference, and a third distance difference among the m distance differences;
    determining a first set of predicted locations of the interfering device according to the first range difference and the third range difference;
    determining a second set of predicted locations of the interfering device according to the second range difference and the third range difference;
    determining a target location of the interfering device based on the first set of predicted locations and the second set of predicted locations.
  4. The method of claim 3, wherein the target location is a location in an intersection of the first set of predicted locations and the second set of predicted locations.
  5. The method of claim 2, wherein determining the target location of the interfering device based on the determined m range differences comprises:
    determining at least two sets of predicted positions according to the m distance differences;
    determining an intersection of the at least two sets of predicted locations from the at least two sets of predicted locations, the intersection of the at least two sets of predicted locations comprising one or more predicted locations;
    determining any predicted location in the intersection of the at least two sets of predicted locations as a target location of the interfering device.
  6. The method of claim 5, wherein the intersection of the at least two sets of predicted locations comprises a plurality of predicted locations; after determining an intersection of the at least two sets of predicted locations based on the at least two sets of predicted locations, the method further comprises:
    and determining a predicted position which is closest to the central point of the distribution area in a distribution area formed by the predicted positions as the target position of the interference equipment according to the predicted positions in the intersection of the predicted positions.
  7. The method of claim 1, further comprising:
    and sending the target position of the interference equipment to execution equipment so as to enable the execution equipment to output the target position of the interference equipment, wherein the target position output by the execution equipment is used for indicating to close the interference equipment.
  8. A positioning device, comprising:
    a receiving unit, configured to receive first information 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;
    a sending unit, configured to send second information to each access network device in the at least two access network devices, where the second information is used to instruct the access network device to measure a phase offset of the access network device;
    and a determining unit, configured to determine a target location of the interfering device according to the phase deviation measured by each access network device.
  9. The apparatus of claim 8, wherein the determining unit, when determining the target location of the interfering device according to the phase offset measured by each access network device, is specifically configured to:
    selecting m access network devices from the at least two access network devices, wherein the number of the at least two access network devices is n, and m is more than or equal to 2 and less than or equal to n;
    for any access network device in the m access network devices, determining a distance difference between the interference device and the access network device according to the phase deviation of the access network device;
    and determining the target position of the interference equipment according to the m distance differences.
  10. The apparatus according to claim 9, wherein the determining unit, when determining the target location of the interfering device according to the determined m distance differences, is specifically configured to:
    determining a first distance difference, a second distance difference, and a third distance difference among the m distance differences;
    determining a first set of predicted locations of the interfering device according to the first range difference and the third range difference;
    determining a second set of predicted locations of the interfering device according to the second range difference and the third range difference;
    determining a target location of the interfering device based on the first set of predicted locations and the second set of predicted locations.
  11. The apparatus of claim 10, wherein the target location is one location in an intersection of the first set of predicted locations and the second set of predicted locations.
  12. The apparatus of claim 9, wherein the determining unit, when determining the target location of the interfering device according to the determined m distance differences, is specifically configured to:
    determining at least two sets of predicted positions according to the m distance differences;
    determining an intersection of the at least two sets of predicted locations from the at least two sets of predicted locations, the intersection of the at least two sets of predicted locations comprising one or more predicted locations;
    determining any predicted location in the intersection of the at least two sets of predicted locations as a target location of the interfering device.
  13. The apparatus of claim 12, wherein an intersection of the at least two sets of predicted locations comprises a plurality of predicted locations; the determination unit is further configured to:
    and determining a predicted position which is closest to the central point of the distribution area in a distribution area formed by the predicted positions as the target position of the interference equipment according to the predicted positions in the intersection of the predicted positions.
  14. The apparatus of claim 8, wherein the sending unit is further configured to:
    and sending the target position of the interference equipment to execution equipment so as to enable the execution equipment to output the target position of the interference equipment, wherein the target position output by the execution equipment is used for indicating to close the interference equipment.
  15. A positioning device comprising a memory and a processor;
    the memory for storing program code;
    the processor configured to execute the code in the memory to cause the positioning apparatus to perform the method of any one of claims 1-7.
  16. A computer-readable storage medium comprising a program or instructions for performing the method of any one of claims 1 to 7 when the program or instructions are run on a computer.
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