5G communication monitoring and positioning method and system
阅读说明：本技术 一种5g通信侦控定位方法及系统 (5G communication monitoring and positioning method and system ) 是由 王霞 于 2021-06-07 设计创作，主要内容包括：本发明涉及一种5G通信侦控定位方法及系统,包括：将目标用户终端吸引并驻留到便携式的定位设备的5G小区上；建立目标RRC连接；采集目标用户终端的SUPI；5G定位基站通过随机接入流程确定目标用户终端认可的最佳下行发送粗波束；5G定位基站要求目标用户终端测量并上报在最佳下行发送粗波束下的信道或者信号的第一强度,实现粗定位；在最佳下行发送粗波束的方向角范围内,配置多个细波束,实现精定位；5G定位基站触发定位设备的上行发送,最终实现对目标用户终端的定位。本发明具有定位精度高、速度快的优点,特别适用于工作中对用户终端的定位需求,为在5G场景下实现对用户终端的准确定位提供一种高效的定位方法及系统。(The invention relates to a 5G communication detection and control positioning method and a system, comprising the following steps: attracting and residing the target user terminal to a 5G cell of the portable positioning equipment; establishing a target RRC connection; acquiring SUPI of a target user terminal; the 5G positioning base station determines the optimal downlink transmission coarse beam approved by the target user terminal through a random access process; the 5G positioning base station requires the target user terminal to measure and report the first strength of the channel or the signal under the optimal downlink transmission coarse beam, so as to realize coarse positioning; configuring a plurality of thin beams in the direction angle range of the optimal downlink transmission thick beam to realize fine positioning; and the 5G positioning base station triggers the uplink transmission of the positioning equipment to finally realize the positioning of the target user terminal. The method and the system have the advantages of high positioning precision and high speed, are particularly suitable for the positioning requirement of the user terminal in work, and provide an efficient positioning method and system for realizing the accurate positioning of the user terminal in a 5G scene.)
1. A5G communication detection and control positioning method is characterized by comprising the following steps:
the method comprises the following steps: attracting and residing a target user terminal originally residing in a 5G macro network cell to a 5G cell of a portable positioning device;
step two: establishing RRC connection between the target user terminal and the 5G positioning base station;
step three: acquiring SUPI of the target user terminal;
step four: after the 5G positioning base station learns the SUPI of the target user terminal, the 5G positioning base station allows the target user terminal to initiate a random access process, and the 5G positioning base station determines the optimal downlink transmitting coarse beam approved by the target user terminal through the random access process;
step five: the 5G positioning base station keeps connection with the target user terminal, and the 5G positioning base station requires the target user terminal to measure and report first strength of a channel or a signal under the optimal downlink sending coarse beam, and judges a first distance of the target user terminal relative to the 5G positioning base station according to the first strength to realize coarse positioning;
step six: within the range of the direction angle of the optimal downlink transmission coarse beam, the 5G positioning base station further configures a plurality of fine beams to the target user terminal, and requires the target user terminal to measure and report a second intensity of a channel or a signal of the fine beams, and determines a second distance of the target user terminal relative to the 5G positioning base station according to the second intensity, thereby implementing fine positioning according to the beam angle of the fine beams and the second distance;
step seven: the 5G positioning base station triggers uplink transmission of the positioning equipment to obtain third intensity of a corresponding channel or signal, judges a third distance of the positioning equipment relative to the 5G positioning base station according to the third intensity, and gradually approaches the third distance to the second distance by measuring the third intensity at different positions for multiple times, so that the target user terminal is finally positioned.
2. The method as claimed in claim 1, wherein the first step includes the following steps:
the method comprises the following steps: acquiring information of a 5G macro network cell where the target user terminal originally resides through a network scanning function of the positioning equipment, wherein the information comprises frequency points, scrambling codes, time slot formats, adjacent frequency information, PLMN ID, TAC and RAC;
the first step is: synchronizing the 5G cell of the positioning equipment with the originally resident 5G macro network cell of the target user terminal;
step one is three: and selecting a proper frequency point, a scrambling code, a time slot format, a channel and signal parameter, a PLMN ID, a TAC and an RAC for the 5G cell of the positioning equipment to finish the residence of the target user terminal on the 5G cell of the positioning equipment.
3. The method according to claim 1, wherein the detecting and positioning method for 5G communication,
when the RRC connection between the target user terminal and the 5G positioning base station is established, the target user terminal sends a corresponding request to the 5G positioning base station according to a state before the target user terminal resides in a 5G cell of the positioning equipment, and when the state of the target user terminal is an idle state, a connection state or an inactive state, the target user terminal correspondingly and respectively sends an RRC setting request, an RRC reestablishment request and an RRC recovery request to the 5G positioning base station.
4. The detecting, detecting and positioning method for 5G communication according to claim 1, wherein when collecting SUPI in 5G, the third step includes the following steps:
the 5G positioning base station sends NAS ID Request to the target user terminal;
after receiving the request, the target user terminal newly generates a set of public key/private key, calculates and obtains SUCI according to SUPI (secure user interface) distributed by an operator, an encryption algorithm and the newly generated public key/private key, and feeds back the SUCI to the 5G positioning base station;
and the 5G positioning base station interprets the SUPI of the target user terminal after receiving the SUCI.
5. The detecting, detecting and positioning method for 5G communication according to claim 1, wherein when collecting SUPI in 4G, step three includes the following steps:
after the target user terminal is connected with the 5G positioning base station, the target user terminal completes registration and establishes service bearing;
the 5G positioning base station sends a switching command to forcibly switch the target user terminal to the 4G base station and maintain the connection;
the 4G base station sends a 4G NAS ID Request to the target user terminal;
and after receiving the request, the target user terminal returns the IMSI to the 4G base station to obtain the SUPI of the target user terminal.
6. The detecting, detecting and positioning method for 5G communication according to claim 1, wherein when collecting SUPI in 4G, step three includes the following steps:
the 5G positioning base station sets a TAC (cell-based access control) which is the same as that of a surrounding macro network 5G base station, and after the target user terminal is connected with the 5G positioning base station, a registration request is initiated to the 5G positioning base station;
the 5G positioning base station sends a registration rejection message to the target user terminal, so that all 5G base stations under the TAC are prohibited to be accessed;
the target user terminal reselects to be connected to the 4G base station and maintains the connection;
the 4G base station sends a 4G NAS ID Request to the target user terminal;
and after receiving the request, the target user terminal returns the IMSI to the 4G base station to obtain the SUPI of the target user terminal.
7. The method for surveillance positioning of 5G communication according to any one of claims 4 to 6,
the encryption algorithm is a null algorithm or an elliptic curve integrated encryption algorithm.
8. The method for surveillance positioning of 5G communication according to any one of claims 4 to 6,
when the operator distributes the SUPI and the encryption algorithm to the target user terminal, the SUPI and the encryption algorithm are written into the SIM card or the storage space of the target user terminal.
9. The method according to claim 1, wherein the detecting and positioning method for 5G communication,
the optimal downlink transmission coarse beam is SSB or CSI-RS, the fine beam is CSI-RS, and the channel or signal is any one of PUCCH, PUSCH and SRS.
10. A 5G communication monitoring and positioning system, comprising a 5G positioning base station and a portable positioning device, wherein the 5G positioning base station and the positioning device use the 5G communication monitoring and positioning method according to any one of claims 1 to 9 to position a target user terminal.
Technical Field
The invention relates to the technical field of detection and positioning, in particular to a 5G communication detection and positioning method and system.
Background
Because the 5G security architecture is protected by changing the 4G symmetric key into the PKI architecture, and a mechanism of an operator public key and a certificate is adopted, a conventional International Mobile Subscriber Identity (IMSI) capture mechanism fails, and meanwhile, with implementation of General Data Protection Regulation (GDPR), capture of user information is more difficult, which provides a new challenge for how a detection and control positioning technology realizes accurate positioning of a user terminal in a 5G scenario.
Disclosure of Invention
In order to meet the challenge of a positioning base station in a 5G scene and realize accurate and rapid positioning of a user terminal, the invention provides a 5G communication detection and control positioning system.
In order to achieve the purpose, the invention adopts the following technical scheme:
A5G communication detection and positioning method comprises the following steps:
the method comprises the following steps: attracting and residing a target user terminal originally residing in a 5G macro network cell to a 5G cell of a portable positioning device;
step two: establishing RRC connection between the target user terminal and the 5G positioning base station;
step three: acquiring SUPI of the target user terminal;
step four: after the 5G positioning base station learns the SUPI of the target user terminal, the 5G positioning base station allows the target user terminal to initiate a random access process, and the 5G positioning base station determines the optimal downlink transmitting coarse beam approved by the target user terminal through the random access process;
step five: the 5G positioning base station keeps connection with the target user terminal, and the 5G positioning base station requires the target user terminal to measure and report first strength of a channel or a signal under the optimal downlink sending coarse beam, and judges a first distance of the target user terminal relative to the 5G positioning base station according to the first strength to realize coarse positioning;
step six: within the range of the direction angle of the optimal downlink transmission coarse beam, the 5G positioning base station further configures a plurality of fine beams to the target user terminal, and requires the target user terminal to measure and report a second intensity of a channel or a signal of the fine beams, and determines a second distance of the target user terminal relative to the 5G positioning base station according to the second intensity, thereby implementing fine positioning according to the beam angle of the fine beams and the second distance;
step seven: the 5G positioning base station triggers uplink transmission of the positioning equipment to obtain third intensity of a corresponding channel or signal, judges a third distance of the positioning equipment relative to the 5G positioning base station according to the third intensity, and gradually approaches the third distance to the second distance by measuring the third intensity at different positions for multiple times, so that the target user terminal is finally positioned.
Correspondingly, the invention also provides a 5G communication monitoring and positioning system, which comprises a 5G positioning base station and portable positioning equipment, wherein the 5G positioning base station and the positioning equipment adopt the 5G communication monitoring and positioning method to position the target user terminal.
Compared with the prior art, the invention has the following beneficial effects:
the 5G communication monitoring and positioning method and the system provided by the invention reside the target user terminal on the 5G cell of the positioning device, establish RRC connection between the target user terminal and the 5G positioning base station and acquire SUPI of the target user terminal, realize coarse positioning and fine positioning of the target user terminal by utilizing the beam forming technology, and finally realize final positioning of the target user terminal by utilizing a successive approximation mode of the positioning device, wherein the positioning precision can reach within 1 meter, and the method and the system have the advantages of high positioning precision and high speed, are particularly suitable for positioning requirements of the user terminal in work, and provide an efficient positioning method and a system for realizing accurate positioning of the user terminal in a 5G scene.
Drawings
Fig. 1 is a flowchart of a 5G communication detecting and positioning method according to the present invention;
FIG. 2 is a diagram illustrating RRC connection setup request connection in the present invention;
FIG. 3 is a diagram illustrating RRC reestablishment request connection according to the present invention;
FIG. 4 is a diagram illustrating RRC resume request connection in the present invention;
FIG. 5 is a SUCI interaction diagram in the present invention;
fig. 6 is a schematic structural diagram of a 5G communication detecting and positioning system according to the present invention.
Detailed Description
The 5G communication detection and control positioning method and the system provided by the invention respectively make technical breakthroughs in the two aspects of rapid user capture and accurate signal positioning, and realize accurate and rapid positioning of the user terminal. The technical solution of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
In one embodiment, as shown in fig. 1, the present invention provides a method for monitoring and positioning 5G communication, which is characterized by comprising the following steps:
step one (S1): attracting and residing a target user terminal originally residing in a 5G macro network cell to a 5G cell of a portable positioning device;
step two (S2): establishing RRC connection between a target user terminal and a 5G positioning base station;
step three (S3): acquiring SUPI of a target user terminal;
step four (S4): after the 5G positioning base station acquires the SUPI of the target user terminal, the 5G positioning base station allows the target user terminal to initiate a random access flow, and the 5G positioning base station determines the optimal downlink transmitting coarse wave beam approved by the target user terminal through the random access flow;
step five (S5): the connection between the 5G positioning base station and the target user terminal is kept, the 5G positioning base station requires the target user terminal to measure and report the first strength of a channel or a signal under the optimal downlink sending coarse beam, and the first distance of the target user terminal relative to the 5G positioning base station is judged according to the first strength to realize coarse positioning;
step six (S6): in the range of the direction angle of the optimal downlink transmission coarse beam, the 5G positioning base station also configures a plurality of fine beams to a target user terminal, requires the target user terminal to measure and report the second intensity of the channels or signals of the fine beams, judges the second distance of the target user terminal relative to the 5G positioning base station according to the second intensity, and further realizes fine positioning according to the beam angle of the fine beams and the second distance;
step seven (S7): the 5G positioning base station triggers uplink transmission of the positioning equipment to obtain third strength of a corresponding channel or signal, judges a third distance of the positioning equipment relative to the 5G positioning base station according to the third strength, and gradually approaches the third distance to the second distance by measuring the third strength at different positions for multiple times, so that the target user terminal is finally positioned.
Specifically, the fast multi-user capturing scheme is divided into an inducing technology and an electronic fence technology.
The induction technology is to attract and reside a target User Equipment (UE) originally residing in a 5G macro cell to a portable positioning device, and initiate Radio Resource Control (RRC) connection for a certain purpose, so as to perform subsequent operations such as information acquisition and positioning.
The terminal residence process specifically comprises the following steps:
the method comprises the following steps: acquiring information of a 5G macro network cell where a target user terminal originally resides through a network scanning function of the positioning equipment, wherein the information comprises frequency points, scrambling codes, time slot formats, adjacent frequency information, PLMN ID, TAC, RAC and the like; in this step, the information of the 5G macro network cell where the target user terminal originally resides can be acquired through equipment such as an engineering machine and a drive test device;
the first step is: synchronizing a 5G cell of the positioning equipment and a 5G macro network cell where a target user terminal originally resides through a GPS or a network scanning function of the positioning equipment;
step one is three: and selecting proper frequency point, scrambling code, time slot format, channel and signal parameter, PLMN ID, TAC and RAC for the 5G cell of the positioning equipment to finish the residence of the target user terminal on the 5G cell of the positioning equipment. And selecting a proper frequency point in 5G adjacent frequencies broadcasted by the 5G macro network cell as a 5G cell frequency point of the positioning equipment. And selecting proper cell selection parameters to ensure that the terminal can preferentially camp on the 5G cell of the positioning equipment under a weaker signal. The appropriate scrambling code, slot format and some channel and signal parameters are selected for the 5G cell of the positioning device to avoid introducing interference to the 5G macro-network cell. Appropriate PLMN ID, TAC, and RAC are set depending on the use of the positioning device. Broadcasting multiple PLMN IDs and multiple TACs may be supported.
When establishing RRC connection between a target user equipment and a 5G positioning base station, the target user equipment sends a corresponding request to the 5G positioning base station according to a state before residing in a 5G cell of a positioning device, which is specifically divided into three cases:
1) the target user terminal is in an IDLE (IDLE) state before camping on the 5G cell of the positioning device. If the TAC of the 5G cell of the positioning device is different from the 5G macro network cell registered by the terminal, the target user terminal sends an RRC Setup Request (RRC Setup Request) to the 5G positioning base station, and the 5G positioning base station feeds back an RRC Setup signaling (RRC Setup) to the target user terminal, and then completes RRC connection Setup (RCC Setup Complete), as shown in fig. 2.
2) Before camping on the 5G cell of the positioning device, the target user terminal is in a connected (CONNECT) state. In this state, the terminal is generally abnormal in the macro network cell, for example, the signal of the macro network cell is weak, or strong interference is received. At this time, the target ue that has completed residing sends an RRC Reestablishment Request (RRC Request) to the 5G positioning base station, and the 5G positioning base station feeds back an RRC Setup signaling (RRC Setup) to the target ue, and then completes RRC connection Setup (RCC Setup Complete), as shown in fig. 3.
3) The target user terminal is in an INACTIVE (INACTIVE) state before camping on the 5G cell of the positioning device. If the RAC of the 5G cell of the positioning device is different from the 5G macro network cell where the terminal resides, the target ue will send an RRC recovery Request (RRC Resume Request) to the 5G positioning base station, and then Complete RRC connection Setup (RCC Setup Complete), as shown in fig. 4.
After the target user terminal is induced to reside in the positioning device, information of the target user terminal, including IMSI, IMEI, and the like, needs to be collected next, and in the 5G technology, concepts such as SUPI, SUCI, and the like are introduced, so that the IMSI or SUPI of the target user terminal needs to be acquired, so that the 5G positioning base station allows the target user terminal to initiate a random access flow, thereby realizing the detection and control positioning.
In 5G, a new terminal Permanent Identifier (SUPI) and a hidden Identifier (SUCI) are introduced, which together fulfill the function of IMSI in GSM/3G/LTE systems. The SUPI is stored in the operator database and in the SIM card or memory space of the terminal, either in the form of an existing IMSI or in the form of an NAI (username: password). The SUCI is obtained by SUPI through an operator specified encryption algorithm. Up to the current frozen standard state, three encryption algorithms are defined: null algorithm, the SUCI is SUPI at this moment; elliptic curve integrated encryption algorithm (ECIES) ProfileA; elliptic curve integrated encryption algorithm (ECIES) Profile B. Profile A and Profile B differ only in certain parameters in the encryption algorithm, and the scheme of encryption is the same.
It can be known by analyzing the standard that SUPI cannot be transmitted over the air in order to reduce the probability of stealing the terminal Identity, so when the 5G positioning base station wants to know the SUPI of the terminal, the target user terminal is required to feed back the SUCI by sending the NAS Identity Request. After receiving the request, the target user terminal calculates and obtains the SUCI, and feeds back the SUCI to a core network access and mobility management function (AMF) of the 5G positioning base station, as shown in fig. 5.
The operator will assign to the target user terminal SUPI, encryption algorithm, public key, while itself holding SUPI, encryption algorithm, private key. When the target user terminal needs to generate the SUCI, the terminal generates a set of public key/private key newly to participate in the calculation of the SUCI each time the SUCI is generated, so that the SUCI values calculated by the target user terminal each time are different. It should be noted that each new SUCI generated by the target ue has a lifetime of 60 seconds, during which the target ue feeds back the same SUCI in the Identity RESPONSE, and after receiving the SUCI, the 5G positioning base station interprets the SUPI, thereby finally acquiring the target ue.
In the 5G standard, an operator allocates { SUPI, encryption algorithm, public key } to a target user terminal, and there may be two ways:
1) writing to the SIM card: a new SIM card needs to be used;
2) storage space written to the target user terminal: at this time, the data is transmitted as application data through an air interface.
From the analysis of the current standard, in the form of SUPI, considering that GSM/LTE conference and 5G coexist for many years, the current SUPI is mainly based on IMSI, so the scheme of acquiring SUPI of the target user terminal is performed according to two sets of schemes of acquisition within 5G and acquisition within 4G, wherein the acquisition within 4G means that the target user terminal is firstly attracted to a 5G cell of the positioning device and then switched to 4G for acquisition.
When the SUPI is collected in 5G, the SUCI can be obtained through the Identity flow. If the operator uses null algorithm, or if the offline scheme can obtain SUPI from sui, SUPI (i.e. IMSI) of the terminal can be directly collected in 5G, i.e. obtained through NAS Identity Request/Identity Response message interaction.
When collecting SUPI in 4G, in 5G connection, the terminal can only switch or redirect to 4G, but not to other systems, and there are two realization ideas for collecting in 4G: 1) after the target user terminal is connected with the 5G positioning base station, the registration is completed and the service bearer is established, then the 5G positioning base station sends a switching command, the target user terminal is forced to the 4G base station, and the connection is maintained; the 4G base station obtains the IMSI through the 4G NAS Identity Request/Identity Response, namely the SUPI of the target user terminal is obtained; 2) the 5G positioning base station sets a TAC (random access communication) which is the same as that of surrounding macro network 5G base stations, after the target user terminal is connected with the 5G positioning base station, the target user terminal initiates a Registration Request (Registration Request) to the 5G positioning base station, and the 5G positioning base station sends a Registration Reject (Registration Reject) message to the target user terminal, so that all the 5G base stations under the TAC are prohibited to be accessed; and then the target user terminal reselects to be connected to the 4G base station, and the IMSI is obtained through the 4G NAS Identity Request/Identity Response, namely the SUPI of the target user terminal is obtained.
After the SUPI of the target ue is obtained by the 5G positioning base station, accurate signal positioning is performed on the target ue.
The 5G positioning base station maintains the connection with the target user terminal and measures the uplink channel quality of the target user terminal or the downlink channel quality reported by the target user terminal; the uplink channel quality of the device is located. And 5G introduces the report of the measurement result of the downlink channel of the physical layer and the beam forming, thereby providing more means and better precision for positioning.
The 5G standard adopts beam forming on more physical channels and physical signals and introduces a downlink beam management process P1/P2/P3And uplink beam management process U1/U2/U3Wherein U isxAnd PxAnd (x is 1, 2 and 3) in one-to-one correspondence.
P1: pairing base station downlink transmission coarse wave beam and terminal downlink receiving wave beam
P2: pairing of downlink transmission fine wave beam of base station and downlink receiving wave beam of terminal
P3: terminal downlink receive beam alignment
The coarse beams may be SSBs or CSI-RSs, and the fine beams are typically CSI-RSs.
SSB is the most commonly used coarse beam. Each SSB burst (SSB burst) lasts 5ms and contains multiple SSBs. Each SSB uses a different transmit beam. Below 3GHz, each SSB burst comprises up to 4 SSBs; 3 GHz-6 GHz, and at most 8 SSBs; above 6GHz, a maximum of 64 SSBs is included.
The 5G base station broadcasts the time-frequency resource of the RandomAccess Preamble and the mapping table of the SSB sending wave beam in the SIB 1.
When the target user terminal resides in the 5G cell and prepares to initiate a registration process, a random access process is executed first. When the terminal selects the time-frequency resource of the RandomAccess Preamble in step 1, it needs to be determined by the best SSB transmission beam and mapping table that it has measured. After the 5G positioning base station detects the Random Access Preamble, the optimal downlink transmission beam approved by the terminal can be obtained by the mapping table, and the subsequent downlink data transmission is based on the downlink transmission beam, which is the most initial P1And (6) carrying out the process. Subsequent adjustment of downlink transmission beam requires re-initiation of P1Process or P2And (6) carrying out the process. The 5G positioning base station determines the optimal downlink transmission coarse beam approved by the target user terminal through the random access process, and the optimal downlink transmission coarse beam can pass through P in the connection process2/P3The flow completes the fine adjustment of the beam.
5G positioning base stationAnd in the direction angle range of the optimal downlink coarse beam, sending a plurality of CSI-RS signals, wherein the CSI-RS signals are not overlapped on the coverage range as much as possible, then requiring the terminal to initiate measurement, reporting the Reference Signal Receiving Power (RSRP) of the CSI-RS through physical layer signaling, and obtaining the optimal fine beam approved by the terminal by the 5G positioning base station. During the fine adjustment process, P2/P3The process is completed in parallel, namely if the terminal capability allows, the downlink receiving beam can be adjusted to be fine, thereby improving the receiving performance.
The terminal equipment is limited by size and multi-antenna interference, and the number of the antennas is generally not more than 4, and most of the antennas are 2. The terminal measurement target can be a downlink signal and combined with the report of the physical layer measurement result of the terminal, or an uplink signal and combined with the report of the physical layer measurement result of the base station.
Through the initial random access process of the target user terminal, the 5G positioning base station can acquire the optimal downlink transmission coarse beam (SSB) approved by the target user terminal. Then the 5G positioning base station completes RRC connection with the target user terminal, and keeps the connection between the base station and the terminal through a certain strategy. On this basis, the 5G positioning base station may request the target user terminal to measure and report the first strength of the channel or signal under the optimal downlink transmit coarse beam (SSB), and may obtain the corresponding RSRP according to the first strength, thereby determining the first distance of the target user terminal with respect to the 5G positioning base station, and implementing coarse positioning.
The 5G positioning base station may configure a plurality of fine beams (using CSI-RS resources) to the target user equipment within the range of the direction angle of the optimal downlink transmission coarse beam, and request the target user equipment to measure and report the second strength of the channels or signals of the fine beams. Through the measurement of the terminal, the RSRP on the thin beams can be obtained according to the second strength. Since the intensity of the thin beam is larger than that of the thick beam, better positioning accuracy can be obtained. In addition, the beam angle of the thin beam can help positioning to obtain better directivity, and fine positioning is achieved according to the beam angle of the thin beam and the second distance.
After the terminal completes connection establishment, the 5G positioning base station maintains connection with the target user terminal by sending some data, and simultaneously triggers uplink sending of the positioning device to obtain third strength of a corresponding PUCCH, PUSCH, SRS or the like, so that a corresponding RSRP can be obtained, and thus a third distance of the positioning device relative to the 5G positioning base station is determined according to the third strength. And successively approximating the third distance to the second distance by measuring the third strength at different positions for multiple times, and finally positioning the target user terminal.
The 5G communication monitoring and positioning method provided in this embodiment resides a target user terminal in a 5G cell of a positioning device, establishes RRC connection between the target user terminal and a 5G positioning base station, and obtains SUPI of the target user terminal, utilizes a beamforming technique to realize coarse positioning and fine positioning of the target user terminal, and finally utilizes a successive approximation method of the positioning device to realize final positioning of the target user terminal, where the positioning accuracy can reach up to 1 meter, and the method has the advantages of high positioning accuracy and high speed, is particularly suitable for positioning requirements of a user terminal in work, and provides an efficient positioning method for accurately positioning the user terminal in a 5G scene.
In another embodiment, as shown in fig. 6, the present invention further provides a 5G communication monitoring and positioning system, which includes a 5G positioning base station 100 and a portable positioning device 200, where the 5G positioning base station 100 is respectively connected to the positioning device 200 and the target user terminal 300, and the 5G positioning base station 100 and the positioning device 200 use the 5G communication monitoring and positioning method described in the foregoing embodiment to position the target user terminal 300, which is not described herein again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.