CN114501456A

CN114501456A - Pseudo base station identification method, equipment, storage medium and device based on NSA (non-switched antenna array) network

Info

Publication number: CN114501456A
Application number: CN202011175928.5A
Authority: CN
Inventors: 祁阳
Original assignee: Suzhou 360 Intelligent Security Technology Co Ltd
Current assignee: Suzhou 360 Intelligent Security Technology Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2022-05-13

Abstract

The invention relates to the technical field of pseudo base station identification, and discloses a pseudo base station identification method, pseudo base station identification equipment, a pseudo base station identification storage medium and a pseudo base station identification device based on an NSA network. The method comprises the steps that the adjacent cell information reported by user equipment in an NSA network is obtained through ANR; judging whether the adjacent cell information exists in a local adjacent cell relation table or not; when the adjacent cell information is not stored in the adjacent cell relation table, network switching is carried out on the adjacent base station corresponding to the adjacent cell information so as to obtain a network switching result; when the network switching result is that network switching fails, the adjacent base station is determined to be a pseudo base station, so that compared with passive pseudo base station searching, the pseudo base station identification is realized according to the connection state by actively establishing connection with the adjacent base station of an unknown adjacent cell, so that the initiative of pseudo base station identification is improved, and the network safety is ensured.

Description

Pseudo base station identification method, equipment, storage medium and device based on NSA (non-switched antenna array) network

Technical Field

The present invention relates to the technical field of pseudo base station identification, and in particular, to a pseudo base station identification method, device, storage medium, and apparatus based on an NSA network.

Background

Currently, endec (EUTRA-NR Dual Connectivity, random access) represents a new radio-Dual connection. According to the 3rd Generation Partnership Project (3rd GPP) standard document, the endec allows user equipment to connect to LTE (Long Term Evolution) enodebs acting as primary nodes and 5G gnodebs acting as secondary nodes. For Sprint, the endec will allow the device to access LTE and 5G (5th generation mobile communication technology) simultaneously on the same frequency band, so the NSA (Non-persistent networking) system based on endec can not only realize the LTE network side, but also realize the 5G network side, thereby realizing a new wireless network.

However, due to the revolution of 5G network architecture, new threats are brought to network security and user privacy. Due to the current networking requirements, most of 5G networks are NSA (non-uniform resource allocation) systems based on ENDC (enhanced Radio, New wireless) systems, NR (New Radio) cells must be added as auxiliary cells, interference and attack opportunities are given to NR pseudo base stations, and therefore threat is brought to network management, and when interference and attack are carried out by the pseudo base stations, the pseudo base stations are passively searched, and identification of the pseudo base stations is achieved.

Disclosure of Invention

The invention mainly aims to provide a pseudo base station identification method, equipment, a storage medium and a device based on an NSA (non-switched antenna array), and aims to solve the technical problem of how to actively identify a pseudo base station based on the NSA.

In order to achieve the above object, the present invention provides a pseudo base station identification method based on an NSA network, which includes the following steps:

acquiring adjacent cell information reported by user equipment in an NSA network;

judging whether the adjacent cell information exists in a local adjacent cell relation table or not;

when the adjacent cell information is not stored in the adjacent cell relation table, network switching is carried out on the adjacent base station corresponding to the adjacent cell information so as to obtain a network switching result;

and when the network switching result is network switching failure, determining that the adjacent base station is a pseudo base station.

Optionally, when the network handover result is a network handover failure, determining that the neighboring base station is a pseudo base station includes:

when the network switching result is network switching failure, acquiring the adjacent cell operation parameter information reported by the user equipment;

performing index analysis on the operation parameter information of the adjacent cell to obtain an index analysis result;

and when the index analysis result reaches an abnormal judgment index, determining the adjacent base station as a pseudo base station.

Optionally, the neighboring cell operation parameter information includes location information of a neighboring base station and location information of a neighboring cell;

the performing index analysis on the neighboring cell operation parameter information to obtain an index analysis result includes:

comparing the position information of the adjacent base station with the position information of the adjacent cell to obtain a position range comparison result;

and taking the position range comparison result as an index analysis result.

Optionally, the neighboring cell operation parameter information includes signal strength information;

the performing index analysis on the operation parameter information of the adjacent cell to obtain an index analysis result includes:

comparing the signal intensity information with a normal signal intensity threshold value to obtain a signal intensity comparison result;

and taking the signal intensity comparison result as an index analysis result.

Optionally, the neighboring cell operation parameter information includes information of base station handover failure times;

comparing the switching failure times information of the base station with a switching failure times threshold value to obtain a switching failure times comparison result;

and taking the switching failure times comparison result as an index analysis result.

Optionally, after determining that the neighboring base station is a pseudo base station when the network handover result is a network handover failure, the method further includes:

obtaining a blacklist configuration instruction, sending the blacklist configuration instruction to an operation and maintenance center, so that the operation and maintenance center searches for an allowed parameter indication in an ANR optimization mode according to the blacklist configuration instruction, and setting a configuration parameter of the allowed parameter indication to be in a non-allowed state.

Optionally, when the network handover result is a network handover failure, after determining that the neighboring base station is a pseudo base station, the method further includes:

obtaining the working parameter information of the pseudo base station through an operation maintenance center;

and determining the position information of the pseudo base station according to the work parameter information, and positioning the pseudo base station according to the position information.

acquiring longitude and latitude information and azimuth information of an adjacent cell where the pseudo base station is located;

determining the position information of the pseudo base station according to the longitude and latitude information and the azimuth information;

and positioning the pseudo base station according to the position information.

Optionally, when the neighboring cell information is not stored in the neighboring cell relation table, performing network handover on a neighboring base station corresponding to the neighboring cell information to obtain a network handover result, where the method includes:

when the adjacent cell information is not stored in the adjacent cell relation table, constructing a measurement configuration instruction according to the adjacent cell information, and sending the measurement configuration instruction to the user equipment, so that the user equipment extracts the adjacent cell information in the measurement configuration instruction, and reads corresponding system information according to the adjacent cell information;

and performing network switching with the adjacent base station according to the system information to obtain a network switching result.

Optionally, the performing network handover with the neighboring base station according to the system information to obtain a network handover result includes:

adding the system information to the neighbor relation table to obtain an updated neighbor relation table;

and when the updated neighbor relation table is updated successfully, performing network switching with the neighbor base station to obtain a network switching result.

Optionally, when the updated result of the updated neighboring cell relation table is that the update is successful, performing network handover with the neighboring base station to obtain a network handover result, where the network handover result includes:

when the updated result of the updated neighbor relation table is that the updating is successful, searching corresponding network address information in preset configuration data according to the system information;

and performing network switching with the adjacent base station according to the network address information to obtain a network switching result.

Optionally, the acquiring the information of the neighboring cell reported by the ue in the NSA network includes:

acquiring an abnormal system configuration instruction;

and sending the abnormal system configuration instruction to the user equipment so that the user equipment reports the information of the adjacent cells according to the abnormal system configuration instruction.

In addition, in order to achieve the above object, the present invention further provides a pseudo base station identification apparatus based on an NSA network, including:

the acquisition module is used for acquiring the adjacent cell information reported by the user equipment in the NSA network;

the judging module is used for judging whether the adjacent cell information exists in a local adjacent cell relation table or not;

a network switching module, configured to perform network switching with a neighboring base station corresponding to the neighboring cell information when the neighboring cell relation table does not store the neighboring cell information, so as to obtain a network switching result;

and the determining module is used for determining that the adjacent base station is a pseudo base station when the network switching result is network switching failure.

Optionally, the determining module is further configured to obtain neighboring cell operation parameter information reported by the user equipment when the network handover result is a network handover failure;

Optionally, the neighboring cell operation parameter information includes location information of a neighboring base station and location information of a neighboring cell; the determining module is further configured to perform position range comparison between the position information of the neighboring base station and the position information of the neighboring cell to obtain a position range comparison result;

and taking the position range comparison result as an index analysis result.

the determining module is further configured to compare the signal strength information with a normal signal strength threshold to obtain a signal strength comparison result;

and taking the signal intensity comparison result as an index analysis result.

the determining module is further configured to compare the base station handover failure time information with a handover failure time threshold to obtain a handover failure time comparison result;

Optionally, the NSA network-based pseudo base station identification apparatus further includes: a configuration module;

the configuration module is further configured to obtain a blacklist configuration instruction, and send the blacklist configuration instruction to an operation and maintenance center, so that the operation and maintenance center searches for an allowed parameter indication in an ANR optimization mode according to the blacklist configuration instruction, and sets a configuration parameter indicated by the allowed parameter to a non-allowed state.

In addition, in order to achieve the above object, the present invention further provides a pseudo base station identification device based on an NSA network, including: the system comprises a memory, a processor and a NSA network-based pseudo base station identification program stored on the memory and running on the processor, wherein the NSA network-based pseudo base station identification program realizes the steps of the NSA network-based pseudo base station identification method when being executed by the processor.

In addition, in order to achieve the above object, the present invention further provides a storage medium, on which an NSA network-based pseudo base station identification program is stored, which, when being executed by a processor, implements the steps of the NSA network-based pseudo base station identification method as described above.

According to the technical scheme provided by the invention, the information of the adjacent cells reported by the user equipment in the NSA network is obtained; judging whether the adjacent cell information exists in a local adjacent cell relation table or not; when the adjacent cell information is not stored in the adjacent cell relation table, network switching is carried out on the adjacent base station corresponding to the adjacent cell information so as to obtain a network switching result; and when the network switching result is network switching failure, determining the adjacent base station as a pseudo base station, so that compared with passive pseudo base station searching, the method actively establishes connection with the adjacent base station of the unknown adjacent cell, and realizes pseudo base station identification according to the connection state, thereby improving the initiative of pseudo base station identification and ensuring the network safety.

Drawings

Fig. 1 is a schematic structural diagram of a pseudo base station identification device based on an NSA network in a hardware operating environment according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a pseudo base station identification method based on an NSA network according to a first embodiment of the present invention;

fig. 3 is a schematic diagram of a network architecture of an NSA system based on the endec according to an embodiment of the NSA network-based pseudo base station identification method of the present invention;

fig. 4 is a schematic signaling interaction diagram of an embodiment of a pseudo base station identification method based on an NSA network according to the present invention;

fig. 5 is a schematic signaling flow diagram of an ANR according to an embodiment of the NSA network-based pseudo base station identification method of the present invention;

fig. 6 is a schematic flow chart of a pseudo base station identification method based on an NSA network according to a second embodiment of the present invention;

fig. 7 is a schematic flow chart of a pseudo base station identification method based on an NSA network according to a third embodiment of the present invention;

fig. 8 is a block diagram of a pseudo base station identification device based on an NSA network according to a first embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The main technical terms related to the embodiments of the present application include:

UE: user Equipment, the main functions of which include broadcast paging and RRC connection processing; performing switching and power control decision; processing management and control information of radio resources; and processing baseband and radio frequency processing information.

eNB: in the standards of 3GPP LTE and LTE-a, the base station is represented by eNB, and corresponds to the user UE. The eNB is a bridge between the UE and an evolved core network EPC in LTE (4G), is connected through an X2 interface and is an S1 access point on an E-UTRAN side.

And g NB: and a secondary cell base station, gNBT is a terminal at the 5G side.

ENDC: ENDC stands for E-UTRAN new radio-dual connectivity, standard terminology. According to the 3GPP standard documents, the endec allows user equipment to connect to LTE enodebs acting as primary nodes and 5G gnodebs acting as neighboring secondary nodes. For Sprint, the endec will allow devices to access LTE and 5G simultaneously on the same frequency band: the frequency band is 41/2.5 GHz.

NR: new Radio, New wireless.

NSA: non-standby, Non-independent networking, some services and functions continue to depend on 4G networks, including 4G core networks, without building a 5G core network. The SA refers to independent networking, the whole line is specially laid for a 5G network, a 5G base station is directly accessed to a 5G core network, the 5G core network transmits signaling, and a 5G NR base station transmits data service. Because the 5G frequency is generally high, a large amount of investment is needed for the initial continuous coverage of the SA networking, and the SA standard freezing time is later than that of the NSA, operators initially select to build a network of an NSA system and then transit to the SA networking in order to build the 5G network at the highest speed.

Air interface resources: refers to the high frequency resources used for transmission between the handset and the base station.

The EPS, Evolved Packet System, 4G System architecture mainly includes a wireless side (i.e. LTE) and a network Side (SAE), and the EPS refers to a complete end-to-end 4G System including a UE (user equipment), an E-UTRAN (Evolved universal terrestrial radio access network), and an EPC core network (Evolved Packet System).

vEPC, Virtualized Evolved Packet Core, virtual Evolved Packet Core.

Interface S1: is the communication interface between the LTE eNodeB (base station) and the EPC (packet core network). The LTE system is divided into a radio access network and a core network.

MME: the Mobility Management Entity is a key control node of a 3GPP protocol LTE access network, and is responsible for positioning of idle mode UE, and a paging process, including a relay, is responsible for a signaling processing part.

ANR: automatic neighbor Relation is a function in LTE, and it can automatically establish and update neighbor Relation. Namely, a neighbor cell list is automatically established and adaptively adjusted according to the running state of the wireless network and wireless data collected by User Equipment (UE) and a wireless base station (eNB) for supporting cell switching.

SON: Self-Organizing networks, mainly include three major functions, namely Self-configuration (Self-configuration), Self-optimization (Self-optimization), and Self-healing (Self-healing). Currently, a relevant application scenario of self-configuration, self-optimization and self-healing functions has been defined for LTE in 3GPP protocols.

O & M: operation and maintenance services.

RRC: radio Resource Control, which controls the communication of UEs and enbs over a Radio air interface and the mobility of UEs across cells.

PCI, Physical layer identity, cell Physical layer ID, similar to the primary scrambling Code of Wideband Code Division Multiple Access (W-CDMA), and the value range is 0-503. The PCI is a key parameter on the LTE air interface, and affects the distribution of cell reference signals and control signals in the frequency domain. The terminal knows the PCI of the cell by detecting the synchronous channel. To ensure that the terminal can detect the PCI, the PCI must be unique in the neighboring cell.

RSRP: reference Signal Receiving Power, is one of the key parameters that may represent the wireless Signal strength and the physical layer measurement requirements in an LTE network.

RAT (RAT): radio Access Type.

CGI: the Global Cell Identifier is used for identifying an area covered by a Cell, and has the structure as follows: MCC (Mobile Country Code) + MNC (Mobile Network Code) + LAC (location area Code) + CI (Local Cell ID, Cell ID).

RAC: routing area code routing area number.

PLMN: public Land Mobile Network, is a Network that can provide Land Mobile communication services to the Public.

TAC, Tracking Area Code, which is an Area for paging and location update.

OMC: operation and Maintenance Center, Operation and Maintenance Center.

MR: measurement Report, refers to information sent once every 480ms on a traffic channel (470 ms on a signaling channel), and these data can be used for network evaluation and optimization.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a pseudo base station identification device based on an NSA network in a hardware operating environment according to an embodiment of the present invention.

As shown in fig. 1, the NSA network-based pseudo base station identification apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), the optional user interface 1003 may also include a standard wired interface and a wireless interface, and the wired interface of the user interface 1003 may be a Universal Serial Bus (USB) interface in the present invention. The network interface 1004 may optionally include a standard wired interface as well as a wireless interface (e.g., WI-FI interface). The Memory 1005 may be a high speed Random Access Memory (RAM); or a stable Memory, such as a Non-volatile Memory (Non-volatile Memory), and may be a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.

Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the NSA network-based pseudo base station identification device, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

As shown in fig. 1, the memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and an NSA network-based pseudo base station identification program.

In the NSA network-based pseudo base station identification device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting peripheral equipment; the NSA network-based pseudo base station identification device calls the NSA network-based pseudo base station identification program stored in the memory 1005 through the processor 1001, and executes the NSA network-based pseudo base station identification method provided by the embodiment of the present invention.

Based on the hardware structure, the embodiment of the pseudo base station identification method based on the NSA network is provided.

Referring to fig. 2, fig. 2 is a schematic flowchart of a pseudo base station identification method based on an NSA network according to a first embodiment of the present invention.

In a first embodiment, the NSA network-based pseudo base station identification method includes the following steps:

step S10: and acquiring the adjacent cell information reported by the user equipment in the NSA network.

It should be noted that, the execution subject of this embodiment is a pseudo base station identification device based on an NSA network, and may also be other devices that can implement the same or similar functions.

Since the present embodiment is based on the NSA network, that is, the eNB side can be migrated to the gNB side, and therefore, in order to implement the eNB side migrating to the gNB side and establishing connection with the gNB side, as shown in the schematic diagram of the network architecture of the NSA system based on the endec shown in fig. 3, first, the UE normally accesses from the eNB side, and then, adds the gNB as an auxiliary cell base station, that is, an adjacent base station, where the signaling flow is on the LTE side, the data flow is on the NR side, and the signaling interaction between the base station and the UE is completed by sending a reconfiguration message by the LTE, where the cell where the eNB is located is a current cell, and the cell adjacent to the current cell is an adjacent cell, which may also be referred to as an auxiliary cell, and since the ANR of the NSA network can detect a new adjacent cell, the adjacent cell information reported by the user equipment may be obtained, where the adjacent cell information includes B1 measurement information for ANR, and system information of target cells such as CGI, list, TAC, LAC, or RAC, and may further include other parameter information, the embodiment does not limit this, and the CGI can identify the neighboring cell, thereby facilitating the analysis of the neighboring cell.

In order to implement network migration, as shown in the signaling interaction diagram shown in fig. 4, the UE messages are all normally accessed by the 4G terminal, a default bearer is established, and then three signaling from RRC Connection Reconfiguration to measurement report MR are used for triggering an addition procedure of the gNB, after the measurement report is reported, the addition procedure meets a threshold for the addition of the gNB, an addition procedure is triggered, an eNB sends an SgNB addition request message at an X2 port, the gNB prepares related resources, and replies an SgNB addition request ACK to the eNB, where the ACK message includes a container including configuration of air interface resources. After receiving the ACK message, the eNB sends the container in the ACK message to the terminal in the form of RRC connection reconfiguration, and after completing the configuration of the terminal air interface on the NR side, returns an RRC connection reconfiguration complete, and after receiving the reconfiguration complete message, the eNB returns an SgNB reconfiguration complete message to the gNB at the X2 port, which means that the air interface of the gNB is ready. ERAB modification indication and configuration are used for migrating S1-U from the eNB side to the gNB side, so that the migration from the default load to the split load is completed.

Step S20: and judging whether the adjacent cell information exists in a local adjacent cell relation table.

It should be noted that the local neighbor relation table is an NRT managed by the ANR, the ANR function resides in the eNB and manages the NRT, the neighbor detection function is responsible for discovering a new neighbor and adding the new neighbor to the NRT, and the neighbor deletion function is responsible for clearing up an useless neighbor. The adjacent cells of the LTE system are automatically discovered by means of the measurement of the UE and are not completely configured by the O & M, so that the management and configuration work of the O & M on the adjacent cell relation of the eNB is reduced, and the method is the target expected to be achieved by the SON function.

In this embodiment, by determining whether the local neighbor cell relation table stores the neighbor cell information, an unknown neighbor base station in the neighbor cell information can be obtained, and thus, the identification of the pseudo base station can be actively performed on the unknown neighbor base station.

In a specific implementation, since the neighboring cell information includes CGI information, that is, a cell identification code, by determining whether a CGI is stored in a local neighboring cell relationship table, when the CGI is stored, it indicates that an adjacent base station corresponding to the CGI in the neighboring cell information is known, and when the CGI is not stored, it indicates that an adjacent base station corresponding to the CGI in the neighboring cell information is unknown, that is, a new adjacent base station appears.

Step S30: and when the adjacent cell information is not stored in the adjacent cell relation table, performing network switching on the adjacent base station corresponding to the adjacent cell information to obtain a network switching result.

It can be understood that, when the neighboring cell relation table does not store the neighboring cell information, it indicates that a neighboring base station corresponding to the CGI in the neighboring cell information is unknown, and needs to connect with the neighboring base station corresponding to the neighboring cell information, as shown in the signaling flow diagram of the ANR shown in fig. 5, when the eNB obtains a neighboring cell measurement report reported by the UE, the eNB reports the newly detected neighboring cell relation to the O & M, where the message includes the PCI, CGI, and O & M of the neighboring cell, and the notification of the eNodeB may change a newly found NR attribute, that is, a value of No X2, HO, and No Remove. If the O & M updates the NR attribute value, an NR update message is sent to the eNodeB, and the eNodeB updates the attribute value corresponding to the NR after receiving the O & M response. If the attribute value is not changed by the O & M, no message may be sent, after the attribute value of the NR of the eNodeB is updated successfully, the neighbor cell relation reported by the eNodeB is added successfully to the O & M, and after the process is completed, network handover with a neighbor base station may be started, wherein the network handover result may be network handover failure or network handover success.

Step S40: and when the network switching result is network switching failure, determining that the adjacent base station is a pseudo base station.

It should be noted that, in a general case, the determination of the pseudo base station is that the UE terminal device is responsible for collecting information, and reporting information such as CI and signal strength of an adjacent base station to the network through a measurement report, and the network combines related data such as network topology and configuration information to perform comprehensive analysis on all data to determine whether a pseudo base station exists in a certain area, and at the same time, locks the position of the pseudo base station through positioning technologies such as GPS and triangulation to completely hit the pseudo base station, but in this embodiment, a new adjacent base station is identified by using an auxiliary cell search function of ANR and managing NRT, and the identification of the pseudo base station is implemented by combining with the measurement report reported by the UE, and protection of the pseudo base station is changed from passive protection to active search, and has prejudgment.

In the embodiment, the information of the adjacent cells reported by the user equipment in the NSA network is obtained; judging whether the adjacent cell information exists in a local adjacent cell relation table or not; when the adjacent cell information is not stored in the adjacent cell relation table, network switching is carried out on the adjacent base station corresponding to the adjacent cell information so as to obtain a network switching result; when the network switching result is that network switching fails, the adjacent base station is determined to be a pseudo base station, so that compared with passive pseudo base station searching, the pseudo base station identification is realized according to the connection state by actively establishing connection with the adjacent base station of an unknown adjacent cell, so that the initiative of pseudo base station identification is improved, and the network safety is ensured.

Referring to fig. 6, fig. 6 is a schematic flowchart of a pseudo base station identification method based on the NSA network according to a second embodiment of the present invention, and the second embodiment of the pseudo base station identification method based on the NSA network according to the first embodiment shown in fig. 2 is provided.

In the second embodiment, the step S40 includes:

step S401, when the network switching result is network switching failure, acquiring the adjacent cell operation parameter information reported by the user equipment.

In a specific implementation, in order to realize the judgment of the network switching result, since the neighboring base station is the newly searched base station, if the neighboring base station is the pseudo base station, there may be no relevant information in the configuration database, or the connection establishment of X2/Xn fails, the switching can not be completed, thereby causing the switching success rate of the peripheral base stations and the user experience rate to be reduced, even to be dropped, seriously affecting the user perception, therefore, whether the adjacent base station is a pseudo base station can be judged according to the network switching condition, but sometimes the network switching failure caused by the network connection state can be caused, therefore, the normally accessed adjacent base station can be confirmed as the pseudo base station, and in order to improve the identification accuracy of the pseudo base station, the operation parameter information of the adjacent cell is specifically analyzed, thereby judging whether the network switching is failed due to the network state or the pseudo base station.

In this embodiment, the neighboring cell operation parameter information includes location information, signal strength information, and handover failure time information, and may further include other parameter information, which is not limited in this embodiment.

Step S402, index analysis is carried out on the adjacent cell operation parameter information to obtain an index analysis result.

It should be noted that, analysis is performed according to the neighboring cell operation parameter information, for example, network handover failure time information is obtained, and comparison is performed according to the handover failure time information and a normal handover threshold value, so that whether an index analysis result is a normal network handover failure state or not can be obtained according to a comparison result.

Step S403, when the index analysis result reaches an abnormal judgment index, determining that the adjacent base station is a pseudo base station.

In this embodiment, the neighboring cell operation parameter information reported by the ue is obtained and analyzed, and when the analysis result meets the abnormal criterion, it indicates that the current network handover fails, that is, the reason for the failure in connection with the neighboring base station is that the neighboring base station is a pseudo base station, so as to improve the accuracy of pseudo base station identification.

In an embodiment, the neighboring cell operation parameter information includes location information of a neighboring base station and location information of a neighboring cell.

The step S403 includes:

comparing the position information of the adjacent base station with the position information of the adjacent cell to obtain a position range comparison result; and taking the position range comparison result as an index analysis result.

In specific implementation, the location information of the adjacent base station may be CGI information, and may also be parameter information in other forms, which is not limited in this embodiment, and by obtaining the CGI information of the adjacent base station, specific location information and location information of an adjacent cell are obtained, so that whether the adjacent base station has an adjacent cell or not can be determined.

In an embodiment, the neighbor cell operation parameter information includes signal strength information.

The step S403 includes:

comparing the signal intensity information with a normal signal intensity threshold value to obtain a signal intensity comparison result; and taking the signal intensity comparison result as an index analysis result.

In a specific implementation, since the operating parameter information of the neighboring cell includes the signal strength information, it can be determined whether the neighboring cell is a pseudo base station according to the signal strength information, where a normal signal strength threshold may be-3 dB or more, and may also be other parameter information, which is not limited in this embodiment, the signal strength information is compared with the normal signal strength threshold, for example, when the current signal strength information is-2 dB, it indicates that the current signal strength information is smaller than the normal signal strength threshold, and it indicates that the signal strength comparison result is an abnormal indicator, it is determined that the neighboring base station is a pseudo base station, and thus the determination of the pseudo base station is achieved through the signal strength information of the network side of the neighboring base station.

In an embodiment, the neighboring cell operation parameter information includes information of a number of times of handover failures of the base station.

The step S403 includes:

comparing the switching failure times information of the base station with a switching failure times threshold value to obtain a switching failure times comparison result; and taking the switching failure times comparison result as an index analysis result.

In a specific implementation, since the neighboring cell operation parameter information includes the base station handover failure time information, it may be determined whether the base station is a pseudo base station according to the base station handover failure time information, where the handover failure time threshold may be 30 times, and may also be other parameter information.

In this embodiment, the pseudo base station is judged according to the position range, the signal strength and the base station handover failure frequency information, it is ensured that the network handover fails due to the fact that the adjacent base station is the pseudo base station, and the network handover fails due to other reasons, so that the accuracy of pseudo base station identification is improved.

Referring to fig. 7, fig. 7 is a schematic flowchart of a pseudo base station identification method based on an NSA network according to a third embodiment of the present invention, and the third embodiment of the pseudo base station identification method based on an NSA network according to the first embodiment shown in fig. 2 is provided.

In an embodiment, after the step S40, the method further includes:

step S401, acquiring a blacklist configuration instruction, and sending the blacklist configuration instruction to an operation and maintenance center, so that the operation and maintenance center searches for an allowed parameter indication in an ANR optimization mode according to the blacklist configuration instruction, and sets a configuration parameter indicated by the allowed parameter to a non-allowed state.

In this embodiment, the blacklist configuration instruction may be a blacklist configuration instruction triggered when the pseudo base station is determined, and may also be a blacklist configuration instruction actively triggered.

In the specific implementation, based on information such as cell signal strength reported by a measurement report MR, base station handover failure records, and cell numbering rules, a network side can statistically analyze pseudo base station discrimination indexes such as signal abnormality (-below 3 dB), the number of times of abnormal handover, and the like, and a management station, that is, an O & M center, can set a "handover permission indication" (cellAdjCellHCFlag) and an "X2 relation indication" (cellAdjCellX2Flag) of a neighboring cell pair as non-permission according to an ANR optimization mode, that is, add a pseudo base station to a blacklist.

In an embodiment, after the step S40, the method further includes:

obtaining the working parameter information of the pseudo base station through an operation maintenance center; and determining the position information of the pseudo base station according to the work parameter information, and positioning the pseudo base station according to the position information.

In this embodiment, in addition to determining the pseudo base station and adding the pseudo base station to the blacklist, the pseudo base station may also be located, so that the pseudo base station is effectively identified.

In a specific implementation, the operation maintenance center may also be an OMC, the operation parameter information includes a mobile country code, a mobile network code, a base station identifier, a site name, a cell identifier, a cell name, longitude, latitude, and the like, and may also include other operation parameter information. The station information management display interface at least comprises the following work parameter information: the pseudo base station comprises a mobile country code, a mobile network code, a base station identifier, a site name, a cell identifier, a cell name, longitude and latitude, so that accurate position information of adjacent base stations can be obtained through the engineering parameter information, and the pseudo base stations are positioned through the accurate position information.

In another embodiment, after the step S40, the method further includes:

acquiring longitude and latitude information and azimuth information of an adjacent cell where the pseudo base station is located; determining the position information of the pseudo base station for the pseudo base station according to the longitude and latitude information and the azimuth information; and positioning the pseudo base station according to the position information.

In this embodiment, the location information of the pseudo base station can be inferred according to the latitude and longitude and the azimuth information of the cell by using the latitude and longitude information and the azimuth information of the cell, so as to facilitate on-site investigation and confirmation, thereby obtaining the accurate location information of the adjacent base station, and realizing the positioning of the pseudo base station through the accurate location information.

In one embodiment, the step S30 includes:

when the adjacent cell information is not stored in the adjacent cell relation table, constructing a measurement configuration instruction according to the adjacent cell information, and sending the measurement configuration instruction to the user equipment, so that the user equipment extracts the adjacent cell information in the measurement configuration instruction, and reads corresponding system information according to the adjacent cell information; and performing network switching with the adjacent base station according to the system information to obtain a network switching result.

In this embodiment, the system information of the neighboring cell can be obtained by using the network data collection function of ANR, but in order to obtain the system information of the neighboring cell, the eNodeB is required to send a measurement configuration instruction to the UE, and the system information of the neighboring cell can also be obtained by the measurement configuration instruction, as shown in fig. 5,

in a specific implementation, for a reported cell, the eNodeB checks whether its CGI information is known. If yes, executing a switching judgment process; if not, the eNodeB constructs a new measurement configuration command, sets the trigger mode of the corresponding measurement object as 'periodic', sets the reportCGI cell as 'TRUE', and includes the PCI of the cell to be reported in the measurement object. After receiving the new configuration command, the UE performs measurement and reads system information of the required target cell, including CGI, PLMN list, TAC, and the like. If the required information is successfully read within the time specified by the system, the result report is sent to the eNodeB, and if the time is out, the reading operation fails and no report is sent.

In an embodiment, the performing network handover with the neighboring base station according to the system information to obtain a network handover result includes:

adding the system information to the neighbor relation table to obtain an updated neighbor relation table; and when the updated neighbor relation table is updated successfully, performing network switching with the neighbor base station to obtain a network switching result.

In this embodiment, after receiving the report, the eNodeB adds a new NR to the NRT neighbor relation table, where the local cell is the current serving cell of the UE, the target cell is the NR cell in the report, the relation between the cell and the base station, and the information between the neighbor cell and the secondary cell. The NR record includes information of PCI, CGI, PLMN list, and possible TAC/LAC/RAC of the target neighboring cell, and several attributes (No X2, No HO, No Remove) of NR are set as default values of the system. After creating the NR, the eNodeB reports this newly detected neighbor relation to the O & M, and the message includes the PCI and CGI of the neighbor.

The O & M is informed by the eNodeB that the newly discovered NR attribute, i.e. No X2, No HO, No Remove, may be changed (the O & M is based on the system preset value). If the O & M updates the NR attribute value, an NR update message is sent to the eNodeB, and the eNodeB updates the attribute value corresponding to the NR after receiving the O & M response. If the O & M does not change the attribute values, no message may be sent.

In this embodiment, the connection with the neighboring cell may be actively performed based on an NSA network switching mechanism after the neighbor cell relation is successfully added, so as to implement the switching from LTE to 5G measurement.

In an embodiment, when the updated result of the updated neighboring cell relation table is that the updating is successful, performing network handover with the neighboring base station to obtain a network handover result includes:

when the updated result of the updated neighbor relation table is that the updating is successful, searching corresponding network address information in preset configuration data according to the system information; and performing network switching with the adjacent base station according to the network address information to obtain a network switching result.

In this embodiment, the network address information may be IP (Internet Protocol) address information, and may also be address information in other forms.

In a specific implementation, after receiving an event of "successful addition of neighbor relation" reported by a base station, an eNodeB attempts to establish an X2/Xn connection with a neighbor base station according to a measurement report. The eNodeB looks up the configuration database, looks up the IP address information of the neighboring base stations, and establishes the X2/Xn connection. If the neighboring base station is a pseudo base station, there may be no relevant information in the configuration database, or the establishment of the X2/Xn connection fails, and the handover cannot be completed. Therefore, the switching success rate of the adjacent base stations and the user experience rate are reduced, even the connection is dropped, and the user perception is seriously influenced.

In this embodiment, the system information of the neighboring base station may be obtained through the ANR, and the corresponding network address information is searched in the preset configuration data through the system information, so that the connection with the neighboring base station may be realized through the network address information, and active network connection is realized.

In one embodiment, the step S10 includes:

acquiring an abnormal system configuration instruction; and sending the abnormal system configuration instruction to the user equipment so that the user equipment reports the information of the adjacent cells according to the abnormal system configuration instruction.

In this embodiment, the abnormal system configuration instruction may be an inter-system measurement configuration instruction, that is, a preset time period is set to trigger the inter-system measurement configuration instruction, and the inter-system measurement configuration instruction is sent to the UE, so that the UE starts to search for the neighboring cell information.

In a specific implementation, after the UE establishes an RRC connection and a radio bearer, the eNodeB performs inter-system measurement configuration on the UE, and instructs the UE to perform B1 measurement for ANR, and as shown in fig. 5, the configuration message includes a frequency point to be measured, a measurement object, and a reporting criterion, if the eNodeB desires that the UE search for detection and report are unknown, the trigger type of the measurement object must be set to "periodic", and the measurement purpose is set to "reportstrongestcells for son". The frequency point information is configured to eNodeB by O & M. When the UE measures that the specified trigger condition is met, it sends a measurement B1 report to the eNodeB, where the report includes all detected or listed NR cells that meet the condition, and measurement metrics such as RSRP of each cell, so as to obtain neighbor cell information.

In this embodiment, the abnormal system configuration instruction may be sent to the ue, so that the ue starts searching for information of neighboring cells, and monitors unknown neighboring base stations, thereby achieving effective management of neighboring base stations.

In addition, an embodiment of the present invention further provides a storage medium, where a NSA network based pseudo base station identification program is stored in the storage medium, and the NSA network based pseudo base station identification program, when executed by a processor, implements the steps of the terminal network access method described above.

Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.

In addition, referring to fig. 8, an embodiment of the present invention further provides a pseudo base station identification apparatus based on an NSA network, where the pseudo base station identification apparatus based on the NSA network includes:

an obtaining module 10, configured to obtain information of an adjacent cell reported by a user equipment in an NSA network.

The determining module 20 is configured to determine whether the local neighboring cell relation table stores the neighboring cell information.

And a network switching module 30, configured to perform network switching with the neighboring base station corresponding to the neighboring cell information when the neighboring cell relation table does not store the neighboring cell information, so as to obtain a network switching result.

A determining module 40, configured to determine that the neighboring base station is a pseudo base station when the network handover result is a network handover failure.

In an embodiment, the determining module 40 is further configured to obtain, when the network handover result is a network handover failure, neighboring cell operation parameter information reported by the user equipment;

In an embodiment, the neighboring cell operation parameter information includes location information of a neighboring base station and location information of a neighboring cell; the determining module 40 is further configured to perform a position range comparison between the position information of the neighboring base station and the position information of the neighboring cell, so as to obtain a position range comparison result;

and taking the position range comparison result as an index analysis result.

In an embodiment, the neighbor cell operation parameter information includes signal strength information;

the determining module 40 is further configured to perform signal strength comparison between the signal strength information and a normal signal strength threshold value to obtain a signal strength comparison result;

and taking the signal intensity comparison result as an index analysis result.

In an embodiment, the neighboring cell operation parameter information includes information of base station handover failure times;

the determining module 40 is further configured to compare the base station handover failure time information with a handover failure time threshold to obtain a handover failure time comparison result;

In an embodiment, the NSA network-based pseudo base station identification apparatus further includes: a configuration module;

In an embodiment, the NSA network-based pseudo base station identification apparatus further includes: a positioning module;

the positioning module is used for obtaining the working parameter information of the pseudo base station through an operation maintenance center;

In an embodiment, the positioning module is configured to obtain longitude and latitude information and azimuth information of an adjacent cell where the pseudo base station is located;

and positioning the pseudo base station according to the position information.

In an embodiment, the network switching module 30 is further configured to, when the neighboring cell relation table does not store the neighboring cell information, construct a measurement configuration instruction according to the neighboring cell information, and send the measurement configuration instruction to the user equipment, so that the user equipment extracts the neighboring cell information in the measurement configuration instruction, and reads corresponding system information according to the neighboring cell information;

In an embodiment, the network switching module 30 is further configured to add the system information to the neighboring cell relation table to obtain an updated neighboring cell relation table;

In an embodiment, the network switching module 30 is further configured to, when an update result of the updated neighboring cell relation table is that the update is successful, search, according to the system information, corresponding network address information in preset configuration data;

In an embodiment, the obtaining module 10 is configured to obtain an abnormal system configuration instruction;

The pseudo base station identification device based on the NSA network of the present invention adopts all the technical solutions of all the embodiments described above, and therefore, at least all the beneficial effects brought by the technical solutions of the embodiments described above are achieved, and no further description is given here.

The invention discloses a1, a pseudo base station identification method based on NSA network, comprising the following steps:

A2, the NSA network-based pseudo base station identification method of claim a1, wherein when the network handover result is a network handover failure, then determining that the neighboring base station is a pseudo base station comprises:

when the network switching result is network switching failure, acquiring the operation parameter information of the adjacent cell reported by the user equipment;

A3, the NSA network-based pseudo base station identification method of claim a2, the neighbor cell operation parameter information including position information of neighbor base stations and position information of neighbor cells;

and taking the position range comparison result as an index analysis result.

A4, the NSA network-based pseudo base station identification method of claim a2, the neighbor cell operation parameter information comprising signal strength information;

and taking the signal intensity comparison result as an index analysis result.

A5, the NSA network-based pseudo base station identification method of claim a2, wherein the neighboring cell operation parameter information includes information of base station handover failure times;

A6, the NSA network-based pseudo base station identification method of any one of claims a1 to a5, further comprising, after determining the neighboring base station as a pseudo base station when the network handover result is a network handover failure:

A7, the NSA network-based pseudo base station identification method of any one of claims a1 to a5, further comprising, after determining the neighboring base station as a pseudo base station when the network handover result is a network handover failure:

A8, the NSA network-based pseudo base station identification method of any one of claims a1 to a5, further comprising, after determining the neighboring base station as a pseudo base station when the network handover result is a network handover failure:

and positioning the pseudo base station according to the position information.

A9, the NSA network-based pseudo base station identification method according to any one of claims a1 to a5, wherein when the neighboring cell relation table does not store the neighboring cell information, the neighboring base station corresponding to the neighboring cell information performs network handover to obtain a network handover result, the method includes:

A10, the NSA network-based pseudo base station identification method of claim a9, wherein the network switching with the neighboring base station according to the system information to obtain a network switching result comprises:

A11, the NSA network-based pseudo base station identification method of claim a10, wherein when the updated neighbor relation table is updated successfully, performing network handover with the neighboring base station to obtain a network handover result, the method includes:

A12, the method for pseudo base station identification based on NSA network as claimed in any one of claims a1 to a5, wherein the acquiring neighboring cell information reported by user equipment in NSA network includes:

acquiring an abnormal system configuration instruction;

The invention also discloses B13, a pseudo base station identification device based on NSA network, the pseudo base station identification device based on NSA network includes:

B14, the NSA network-based pseudo base station identification apparatus of claim B13, wherein the determining module is further configured to obtain neighboring cell operation parameter information reported by the user equipment when the network handover result is a network handover failure;

B15, the NSA network-based pseudo base station identification apparatus of claim B14, the neighbor cell operation parameter information comprising position information of neighbor base stations and position information of neighbor cells; the determining module is further configured to compare the location information of the neighboring base station with the location information of the neighboring cell to obtain a location range comparison result;

and taking the position range comparison result as an index analysis result.

B16, the NSA network-based pseudo base station identification device of claim B14, the neighbor cell operation parameter information comprising signal strength information;

and taking the signal intensity comparison result as an index analysis result.

B17, the NSA network-based pseudo base station identification device of claim B14, wherein the neighboring cell operation parameter information includes information of base station handover failure times;

B18, the NSA network-based pseudo base station identification apparatus as claimed in any of claims B13 to B17, further comprising: a configuration module;

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A pseudo base station identification method based on NSA network is characterized by comprising the following steps:

2. The NSA network-based pseudo base station identification method of claim 1, wherein the determining that the neighboring base station is a pseudo base station when the network handover result is a network handover failure comprises:

3. The NSA network-based pseudo base station identification method of claim 2, wherein the neighbor cell operation parameter information includes position information of neighbor base stations and position information of neighbor cells;

and taking the position range comparison result as an index analysis result.

4. The NSA network-based pseudo base station identification method of claim 2, wherein the neighbor cell operation parameter information includes signal strength information;

and taking the signal intensity comparison result as an index analysis result.

5. The NSA network-based pseudo base station identification method of claim 2, wherein the neighbor cell operation parameter information includes base station handover failure number information;

6. The NSA network-based pseudo base station identification method according to any of claims 1 to 5, wherein after determining the neighboring base station as a pseudo base station when the network handover result is a network handover failure, the method further comprises:

7. The NSA network-based pseudo base station identification method according to any of claims 1 to 5, wherein after determining the neighboring base station as a pseudo base station when the network handover result is a network handover failure, the method further comprises:

8. An NSA network-based pseudo base station identification apparatus, comprising:

9. An NSA network-based pseudo base station identification device, comprising: a memory, a processor and a NSA network based pseudo base station identification program stored on the memory and running on the processor, the NSA network based pseudo base station identification program when executed by the processor implementing the steps of the NSA network based pseudo base station identification method according to any of claims 1 to 7.

10. A storage medium having stored thereon an NSA network based pseudo base station identification program which when executed by a processor implements the steps of the NSA network based pseudo base station identification method according to any of claims 1 to 7.