WO2020034228A1

WO2020034228A1 - Pseudo base station identification method and apparatus

Info

Publication number: WO2020034228A1
Application number: PCT/CN2018/101203
Authority: WO
Inventors: 卓超; 刘涛
Original assignee: 华为技术有限公司
Priority date: 2018-08-17
Filing date: 2018-08-17
Publication date: 2020-02-20
Also published as: CN112567780B; CN112567780A

Abstract

Disclosed are a pseudo base station identification method and apparatus, wherein same are used for identifying a message source after a user equipment receives a paging message for instructing reception of a PWS message or receives the PWS message, avoiding the problem of causing public panic due to the fact that a forged PWS message is received. The method comprises: a user equipment receiving a paging message sent by a base station to which a first cell currently camped belongs, wherein the paging message is used for instructing the user equipment to receive a public warning system (PWS) message; the user equipment determining whether the message type of the PWS message is consistent with a PWS message type supported by an operator supplying a service to the user equipment; and where the message type of the PWS message is inconsistent with the PWS message type supported by the operator supplying a service to the user equipment, the user equipment determining that the base station is a pseudo base station.

Description

Method and device for identifying pseudo base station

Technical field

The present application relates to the field of communication technologies, and in particular, to a method and a device for identifying a pseudo base station.

Background technique

The purpose of the public warning system (PWS) is to inform users in a timely and effective manner of emergency, such as earthquakes, tsunamis, hurricanes, fires, and terrorist attacks, through communication networks that have been set up, so that users can Take appropriate risk avoidance measures in time to reduce the impact of the disaster on the public, so as to achieve the purpose of early warning. In PWS, information related to disasters is usually notified by sending PWS messages to user equipment.

According to the 3rd Generation Partnership Project (3GPP) agreement, the base station can send a PWS message to the user equipment in the following way: When an unexpected situation needs to be notified to the user through the PWS message, the base station will send a search request to the user equipment. A Paging message to instruct the user equipment to receive the PWS message; after the user equipment receives the paging message, a modem in the user equipment receives the PWS message issued by the base station and sends it to the application processor (application processor, AP). The AP displays the content of the PWS message on the display interface of the user equipment.

Because paging messages and system messages (for example, system messages with paging channel configuration) are sent in plain text, there will be cases of malicious forgery of PWS messages in actual applications, which will not only cause panic among the people, users The device will also cause power consumption problems due to receiving the PWS message.

For example, when a legitimate base station sends a system message (for example, a system message with a paging channel configuration) to the user equipment, it is sent in clear text. Therefore, a hacker can obtain the paging channel configuration of the legitimate base station, and search for a legitimate base station. The paging channel interferes, and sends a paging message to the user equipment to instruct the user equipment to receive the PWS message and a fake PWS message (at this time, the PWS message received by the user equipment may be considered to be sent by a pseudo base station simulated by a hacker).

For another example, if the user equipment resides in a pseudo base station cell, the pseudo base station may send a paging message to the user equipment to instruct the user equipment to receive a PWS message and a fake PWS message.

In the above two examples, the paging message and the PWS message are both sent in plain text, and the user equipment cannot determine the source of the message through the plain text message, and thus cannot distinguish the authenticity of the PWS message.

Therefore, there is an urgent need for a pseudo base station identification scheme for identifying a source of a message after a user equipment receives a paging message for instructing an update of a PWS message or a PWS message is received, so as to prevent the fake PWS message from causing panic among the public.

Summary of the Invention

The embodiments of the present application provide a method and a device for identifying a pseudo base station, which are used by a user equipment to identify a source of a message after receiving a paging message for instructing to receive a PWS message or after receiving a PWS message, so as to avoid receiving the fake PWS message. The problem of public panic.

In a first aspect, an embodiment of the present application provides a method for identifying a pseudo base station. The method includes the following steps:

The user equipment receives a paging message sent by a base station to which the currently camping first cell belongs, and the paging message is used for the user equipment to receive a PWS message of the public early warning system; the user equipment determines that the message type of the PWS message is related to the service provided to the user equipment. Whether the type of PWS message supported by the operator is consistent; and when the message type of the PWS message is inconsistent with the type of PWS message supported by the operator providing the user equipment, the user equipment determines that the base station is a pseudo base station.

The message type of the PWS message may be used to indicate a system message block that carries the PWS message.

Exemplarily, the message type of the PWS message received by the user equipment is any of the following: commercial mobile early warning system CMAS; earthquake and tsunami warning system ETWS; European public early warning system EU-Alert; Korean public early warning system KPAS; disaster and emergency early warning Network DEWN.

With the above solution, after receiving the paging message (for instructing the user equipment to receive the PWS message), the user equipment may determine that the message type of the PWS message is inconsistent with the type of the PWS message supported by the operator that provides service to the user equipment. To determine that the base station is a pseudo base station. Because the type of PWS messages supported by an operator is limited, when the paging message indicates that the type of PWS message received by the user equipment is a type that is not supported by the current operator, the user equipment can determine that the PWS message is not from the operator's network. That is, it is determined that the PWS message is a fake PWS message. Therefore, the method provided in the first aspect can accurately identify whether the base station is a fake base station (that is, judge the source of the PWS message), and then determine the authenticity of the PWS message to avoid the panic caused by the fake PWS message.

After the user equipment determines that the base station is a pseudo base station, the user equipment may prompt the user of the user equipment that the user equipment currently resides in a pseudo base station cell. After seeing the prompt, the user will not cause panic because of the content of the PWS message.

In a possible design, before the user equipment determines whether the message type of the PWS message is consistent with the PWS message type supported by the operator, the user equipment may determine the information supported by the operator according to the configuration information of the first cell and the message type configuration list. PWS message type, the message type configuration list is used to indicate the correspondence between at least one operator and the message type of the PWS message supported by the operator; then, the user equipment obtains the message type of the PWS message.

The configuration information of the first cell includes at least one of the following: a public land mobile network PLMN identification of the first cell; a tracking area code TAC of the first cell; a cell identification code CellID of the first cell; and location information of the first cell .

With the above solution, the PWS message types and PWS message message types supported by the operator that provides services for user equipment can be obtained, and then can be used to determine whether the types are the same.

In order to prevent the user equipment from staying in the pseudo base station cell for a long time, after the user equipment determines that the base station is a pseudo base station, the user equipment may add the cell information of the first cell to the forbidden camp list, and the forbidden camp list is used to indicate the user equipment It is forbidden to camp on the cell corresponding to the cell information recorded in the forbidden camping list.

The cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a physical cell identification PCI of the first cell; and an absolute radio frequency channel number EARFCN of the first cell.

After adding the cell information of the first cell to the forbidden camping list, the user equipment will no longer reside in the first cell, thereby preventing the user from staying in the pseudo base station cell for a long time and frequently receiving fake PWS messages. The problem of increased device power consumption.

In addition, after the user equipment adds the cell information of the first cell to the forbidden camping list, the user equipment can perform a cell search in the current system; if the user equipment searches for an available cell in the current system, it camps on the cell according to the cell search result. The second cell, the cell information of the second cell is not recorded in the prohibited camping list.

With the above solution, the user equipment can perform network search again under the current system, so that the user equipment can camp on a legal base station cell for normal communication.

In a possible design, after the user equipment performs a cell search in the current system, if the user equipment does not search for an available cell in the current system, it switches to a system other than the current system for the cell search, or The cell information of the first cell is deleted from the forbidden camping list, and the first cell is camped again.

By adopting the above scheme, switching to another system for cell search if there is no available cell under the current system can prevent the user equipment from camping on the pseudo base station cell; if the available cell is not available under the current system, the first cell is camped again. This can prevent the user equipment from having no available cells under the current system.

In the pseudo base station identification method provided in the first aspect, the user equipment may further update the message type configuration list.

Specifically, the user equipment may update the message type configuration list in at least one of the following ways: the user equipment updates the message type configuration list according to an instruction of the base station; the user equipment updates the message type configuration list by querying the alarm server, The alarm server is an application server that provides public warning services; the user device updates the message type configuration list through the software upgrade process of the user device; the user device updates the message type configuration list through the software upgrade process of the user identification SIM card in the user device .

In addition, when the pseudo base station identification scheme provided in the first aspect fails to determine that the base station sending the paging message is a pseudo base station, another method may be used to determine again.

Exemplarily, when the message type of the PWS message is consistent with the PWS message type supported by the operator, the following method can be further used to determine whether the base station is a pseudo base station: the user equipment identifies the content of the PWS message; in the PWS When the content of the message is spam, the user equipment determines that the base station is a pseudo base station.

Exemplarily, when the message type of the PWS message is the same as the PWS message type supported by the operator, the following method can be further used to determine whether the base station is a pseudo base station: When the user equipment is in a connected state, the user equipment and the alarm The server communicates, and the alarm server is an application server that provides public early warning services. The user equipment determines that the base station is a pseudo base station if the query of the alarm server does not trigger the PWS message update or the PWS message is a tampered PWS message.

The judgment methods in the above two examples will be introduced in the pseudo base station identification methods provided in the second aspect and the third aspect, respectively, and will not be repeated here.

In a second aspect, an embodiment of the present application provides a method for identifying a pseudo base station. The method includes the following steps: a user equipment receives a PWS message sent by a base station to which a currently camping first cell belongs; the user equipment determines that the content of the PWS message is junk In the case of information, it is determined that the base station is a pseudo base station.

With the above solution, after receiving the PWS message, the user equipment may determine that the base station is a pseudo base station in a case where the content of the PWS message is determined to be spam. Since the alarm server does not push spam information to the user equipment through the operator's network, when the content of the PWS message is spam, the user equipment can determine that the PWS message does not come from the operator's network, that is, the PWS message is judged to be fake PWS message. Therefore, the method provided in the second aspect can accurately identify whether the base station is a fake base station (that is, judge the source of the PWS message), and then determine the authenticity of the PWS message to avoid the panic caused by the fake PWS message.

In a possible design, before the user equipment receives a PWS message sent by the base station to which the currently camping first cell belongs, the user equipment may receive a paging message sent by the base station, and the paging message is used to instruct the user equipment to receive PWS message.

That is, after receiving the paging message, the user equipment may receive the PWS message according to the indication of the paging message.

In order to prevent the user equipment from staying in the pseudo base station cell for a long time, after the user equipment determines that the base station is a pseudo base station, the user equipment may add the cell information of the first cell to the forbidden camping list, and the forbidden camping list is used to instruct the user equipment It is forbidden to camp on the cell corresponding to the cell information recorded in the forbidden camping list.

By adopting the above scheme, switching to another system to perform a cell search when there is no available cell in the current system can prevent the user equipment from camping on the pseudo base station cell; if the available cell is not available in the current system, the first cell is camped again. This can prevent the user equipment from having no available cells under the current system.

According to a third aspect, an embodiment of the present application provides a pseudo base station identification method. The method includes the following steps: a user equipment receives a PWS message sent by a base station to which a first cell that currently resides; when the user equipment is in a connected state, the user equipment Communicate with the alarm server. The alarm server is an application server that provides public warning services. The user equipment determines that the base station is a pseudo base station if the alarm server does not trigger the PWS message update or the PWS message is a tampered PWS message. .

With the above solution, after receiving the PWS message, the user equipment can actively communicate with the alarm server, and determine that the base station is false if the alarm server is not triggered to update the PWS message or the PWS message is a tampered PWS message. Base station. Since it is difficult for the pseudo base station to interfere with the communication initiated by the connected user equipment with the alarm server, the information obtained by the user equipment by querying the alarm server is non-interfering information. When the uninterfered information does not match the PWS message, it means that the PWS message is forged, that is, the base station is a fake base station. Therefore, the method provided in the third aspect can accurately identify whether the base station is a fake base station (that is, judge the source of the PWS message), and then determine the authenticity of the PWS message, thereby avoiding the panic caused by the fake PWS message.

Specifically, in the method provided by the third aspect, the user equipment communicates with the alarm server in any of the following ways: the user equipment queries whether the alarm server triggers a PWS message update within the first set time period; the user equipment Query the content of the second PWS message sent by the alarm server last time, and compare the content of the second PWS message with the content of the PWS message; the user equipment instructs the alarm server to resend the third PWS sent last time by using asymmetric encryption and decryption Message and / or check code stream of the third PWS message; the user equipment compares the content of the third PWS message with the content of the PWS message, and / or, compares the check code stream of the third PWS message with the content of the PWS message Check the code stream for comparison.

In order to prevent the user equipment from staying in the pseudo base station cell for a long time, after the user equipment determines that the base station is a pseudo base station, the user equipment may add the cell information of the first cell to the forbidden camping list, and the forbidden camping list is used to indicate the user equipment. It is forbidden to camp on the cell corresponding to the cell information recorded in the forbidden camping list.

In addition, in its own embodiment, if the user equipment is in an idle state when receiving the PWS message, the following scheme can be used to determine whether the base station is a pseudo base station: The user equipment receives a message sent by the base station to which the first cell currently camping belongs. After the PWS message, if the user equipment is in an idle state, the user equipment triggers a chain establishment; the user equipment determines that the base station is a pseudo base station if the chain establishment fails.

When the user equipment resides in a legal base station cell, if the user equipment actively initiates a chain establishment, the chain establishment between the user equipment and the base station is successful, so that the user equipment can be switched to a connected state for normal communication with the base station; while the user equipment resides in the In the case of a pseudo base station cell, since it is difficult for the pseudo base station to perform two-way authentication with the user equipment, if the user equipment actively initiates a chain establishment, the chain establishment may fail. Therefore, in the method provided in the third aspect, whether the base station is a legitimate base station may be determined by whether the user equipment triggers the establishment of the chain successfully.

In addition, in order to prevent multiple user equipments from triggering the chain establishment at the same time, when the user equipment triggers the chain establishment, it may trigger the chain establishment after waiting for a second set time.

The second setting duration may be configured by the user equipment, may be configured by the network, or may be configured by the user equipment and the network together.

After the user equipment triggers the chain establishment, if the user equipment chain establishment is successful, the following scheme can be used to further determine whether the base station is a pseudo base station: the user equipment communicates with the alarm server after the chain establishment is successful; the user equipment does not trigger the query when the alarm server is found When the PWS message is updated or it is found that the PWS message is a tampered PWS message, it is determined that the base station is a pseudo base station.

In this implementation, the success of the user equipment chain establishment may be as follows: the PWS message received by the user equipment is sent to the user equipment after the pseudo base station interferes with the paging channel of the legitimate base station; when the user equipment triggers the chain establishment, A legitimate base station will establish a connection with the user equipment. At this time, the user equipment can still query the alarm server to determine whether the previously received PWS message is a PWS message sent by a pseudo base station.

In a fourth aspect, an embodiment of the present application provides a pseudo base station identification device, which is applied to user equipment and includes a transceiver module and a processing module.

The transceiver module is configured to receive a paging message sent by the base station to which the currently camping first cell belongs, and the paging message is used to instruct the user equipment to receive a public early warning system PWS message.

A processing module, configured to determine whether a message type of the PWS message is consistent with a PWS message type supported by an operator serving a user equipment; a message type of the PWS message and a PWS message type supported by an operator serving the user equipment In the case of inconsistency, it is determined that the base station is a pseudo base station.

The message type of the PWS message is used to indicate a system message block that carries the PWS message.

In a possible design, the processing module is further configured to: before determining whether the message type of the PWS message is consistent with the PWS message type supported by the operator, determine according to the configuration information of the first cell and the message type configuration list The PWS message type supported by the operator. The message type configuration list is used to indicate the correspondence between at least one operator and the message type of the PWS message supported by the operator; obtain the message type of the PWS message.

In a possible design, the processing module is further configured to: after determining whether the message type of the PWS message is consistent with the PWS message type supported by the operator, after the message type of the PWS message is consistent with the PWS message type supported by the operator In this case, the content of the PWS message is identified; then, if the content of the PWS message is spam, it is determined that the base station is a pseudo base station.

In a possible design, the processing module is further configured to: after determining whether the message type of the PWS message is consistent with the PWS message type supported by the operator, after the message type of the PWS message is consistent with the PWS message type supported by the operator In the case, when the user equipment is in the connected state, it communicates with the alarm server through the transceiver module. The alarm server is an application server that provides public warning services. Then, the PWS message update is not triggered when the alarm server is queried or the PWS message is queried as In the case of a tampered PWS message, it is determined that the base station is a pseudo base station.

In a possible design, the processing module is further configured to: after determining that the base station is a pseudo base station, add the cell information of the first cell to a prohibited camping list, and the prohibited camping list is used to instruct the user equipment to prohibit camping on the prohibited The cell corresponding to the cell information recorded in the camping list.

In a possible design, the processing module is further configured to: after adding the cell information of the first cell to the forbidden camping list, perform a cell search in the current system; if an available cell is searched in the current system, according to the cell The search result is camped on the second cell, and the cell information of the second cell is not recorded in the prohibited camping list.

In a possible design, the processing module is further configured to: after performing a cell search, if no available cell is found in the current system, switch to a system other than the current system to perform a cell search; or, perform a cell search After searching, if no available cell is found in the current system, the cell information of the first cell is deleted from the forbidden camping list, and the first cell is camped again.

In a possible design, the processing module is further configured to: update the message type configuration list.

In a possible design, the processing module updates the message type configuration list in at least one of the following ways: the processing module updates the message type configuration list according to an instruction of the base station; the processing module queries the alarm server for the message type The configuration list is updated. The alarm server is an application server that provides public warning services. The processing module updates the message type configuration list through the software upgrade process of the user device. The processing module updates the message through the software upgrade process of the user identification SIM card in the user device. Type configuration list is updated.

In a possible design, the configuration information of the first cell includes at least one of the following: a public land mobile network PLMN identification of the first cell; a tracking area code TAC of the first cell; a cell identification code CellID of the first cell; Location information of the first cell.

In a possible design, the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a physical cell identifier PCI of the first cell; and an E- of the first cell UTRA absolute radio frequency channel number EARFCN.

In a possible design, the processing module is further configured to: after determining that the base station is a pseudo base station, prompt the user of the user equipment that the user equipment currently resides in a pseudo base station cell.

In a possible design, the message type of the PWS message is any of the following: commercial mobile early warning system CMAS; earthquake and tsunami warning system ETWS; European public early warning system EU-Alert; Korean public early warning system KPAS; disaster and emergency early warning network DEWN.

In a fifth aspect, an embodiment of the present application provides a pseudo base station identification apparatus, which is characterized in that the apparatus is applied to user equipment and includes a transceiver module and a processing module.

The transceiver module is configured to receive a PWS message sent by the base station to which the currently camping first cell belongs.

A processing module is configured to determine that the base station is a pseudo base station when the content of the PWS message is judged as spam.

In a possible design, the transceiver module is further configured to: before receiving a PWS message sent by the base station to which the first cell currently resides, receive a paging message sent by the base station, the paging message is used to indicate a user The device receives a PWS message.

In a possible design, the processing module is further configured to: after adding the cell information of the first cell to the forbidden camping list, perform a cell search in the current system; if an available cell is searched in the current system, according to The cell search result is camped on the second cell, and the cell information of the second cell is not recorded in the prohibited camping list.

In a possible design, the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a PCI of the first cell; and an EARFCN of the first cell.

In a sixth aspect, an embodiment of the present application provides a pseudo base station identification apparatus, which is applied to user equipment and includes a transceiver module and a processing module.

The transceiver module is configured to receive a PWS message sent by a base station to which the currently camping first cell belongs.

The processing module is configured to communicate with the alarm server through the transceiver module when the user equipment is in a connected state, and the alarm server is an application server that provides a public early warning service.

The processing module is further configured to determine that the base station is a pseudo base station when the alarm server is not triggered to update the PWS message or the PWS message is a tampered PWS message.

In a possible design, the transceiver module is further configured to: before receiving a PWS message sent by the base station to which the currently camping first cell belongs, receive a paging message sent by the base station, and the paging message is used to indicate the user equipment Receive PWS messages.

In a possible design, when the processing module communicates with the alarm server through the transceiver module, the processing module is specifically used for: the processing module queries the alarm server whether to trigger the PWS message update within the first set time period through the transceiver module; or, the processing module Query the content of the second PWS message sent by the alarm server through the transceiver module, and compare the content of the second PWS message with the content of the PWS message; or, the processing module instructs the alarm server to re-use the asymmetric encryption and decryption method through the transceiver module Send the third PWS message and / or the checksum stream of the third PWS message sent last time; the processing module compares the content of the third PWS message with the content of the PWS message, and / or, compares the content of the third PWS message The check code stream is compared with the check code stream of the PWS message.

In a possible design, the processing module is further configured to: after receiving the PWS message sent by the base station to which the first cell currently resides, if the user equipment is in an idle state, triggering a chain establishment through the transceiver module; In the case of a chain failure, the base station is determined to be a pseudo base station.

In a possible design, the processing module is further configured to: after triggering the chain establishment, communicate with the alarm server through the transceiver module after the chain establishment is successful; when the query of the alarm server does not trigger the PWS message update or the query of the PWS message is When the tampered PWS message is determined, the base station is determined to be a pseudo base station.

In a possible design, the processing module triggers chain establishment through the transceiver module, including: the processing module triggers chain establishment through the transceiver module after waiting for the second set time.

According to a seventh aspect, an embodiment of the present application provides a pseudo base station identification device. The device includes a processor, the processor is coupled to a memory, and reads an instruction in the memory, for executing the first aspect to the third aspect. Any of the aspects or any of the aspects design a method as described.

The pseudo base station identification device may be a user equipment or a chip in the user equipment.

Specifically, the user equipment includes, but is not limited to, a smart phone, a smart watch, a tablet computer, a virtual reality (VR) device, an augmented reality (AR) device, a personal computer, a handheld computer, and a personal digital assistant.

According to an eighth aspect, an embodiment of the present application further provides a computer-readable storage medium for storing a program for executing a function designed in any one of the first to third aspects or any one of the aspects. When the program is executed by a processor, it is used to implement the method described in any one of the first to third aspects or any one of the aspects.

It should be noted that the computer-readable storage medium provided in the eighth aspect may only be used to store a program used for the functions of the first aspect or any one of the designs of the first aspect, the second aspect or any of the designs of the second aspect One of the programs used for the functions of the third aspect or the functions designed for the third aspect or any one of the third aspects may also store two or three of the above three types of programs. That is, when the program is called by the processor, it can be used to implement the method described in the first aspect or any one of the first aspects, and the method described in the second aspect or any one of the second aspects. One or more of the three types of methods, including the method and the method described in the third aspect or any one of the third aspects.

In a ninth aspect, an embodiment of the present application provides a computer program product including a program code, and when the program code contained in the computer program product runs on a computer, the computer executes any one of the first to third aspects or any one of the foregoing aspects. Any of the aspects design the method described.

It should be noted that, when the program code included in the computer program product provided in the ninth aspect runs on a computer, the computer can execute the method described in the first aspect or any one of the first aspects, the second aspect, or One or more of the three types of methods described in any one of the second aspect designing the method and the third aspect or any one of the third aspect designing the method.

In addition, for the technical effects brought by any of the possible design manners in the fourth aspect to the ninth aspect, refer to the technical effects brought by the different design manners in the first aspect to the third aspect, and are not repeated here.

In addition, it should be noted that the pseudo base station identification scheme provided in the embodiment of the present application is triggered after the user equipment receives the PWS message. The PWS message is determined by identifying some characteristics of the PWS message and the subsequent interaction process between the user equipment and the base station. origin of. In practical applications, the pseudo base station can also push false information by sending other types of messages to the user equipment, such as a cell broadcast service (CBS) message. Since this type of message (for example, CBS message) is similar to the transmission mode and transmission timing of PWS message, after receiving this type of message (for example, CBS message), the user equipment can also use a similar method to the above embodiment to Determine the source of the message. That is, the embodiments of the present application can be used not only to judge the source of PWS messages, but also to judge the sources of other types of messages used by pseudo base stations to push false information. Since the judgment process is similar, the judgment of the source of the PWS message is taken as an example for description in the embodiment of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application;

2 is a schematic flowchart of a first pseudo base station identification method according to an embodiment of the present application;

3 is a schematic flowchart of a second pseudo base station identification method according to an embodiment of the present application;

4 is a schematic flowchart of a third pseudo base station identification method according to an embodiment of the present application;

5 is a schematic flowchart of a fourth pseudo base station identification method according to an embodiment of the present application;

6 is a schematic flowchart of a fifth pseudo base station identification method according to an embodiment of the present application;

7 is a schematic structural diagram of a user equipment according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of another user equipment according to an embodiment of the present application.

detailed description

As described in the background art, the 3GPP protocol specifies that a base station may send a PWS message to a user equipment by using a PWS message to notify the user when an unexpected situation occurs. The base station may send a paging message to the user equipment. To instruct the user equipment to receive the PWS message; after receiving the paging message, the user equipment immediately receives the PWS message issued by the base station and displays the content of the PWS message on the display interface.

Among them, the PWS message can be regarded as one of the system messages. The system message may include a master information block (master information block, MIB) and at least one system message block (system information block, SIB), such as SIB1, SIB2, SIB3, etc. Among them, SIB1 includes information required for user equipment cell access and scheduling information of other SIBs. Generally, when a user equipment receives a system message, it first receives the MIB, then the SIB1, and then receives other system message blocks. The PWS message may be carried in a system message block other than MIB and SIB1, for example, SIB10, SIB11, or SIB12.

Specifically, the manner in which the user equipment receives the PWS message may be: the user equipment first receives the MIB and then the SIB1, and the SIB1 carries scheduling information of the PWS message, and the scheduling information includes, but is not limited to, the message type of the PWS message and the system carrying the PWS message The indication information of the message block; the user equipment can obtain the scheduling information of the PWS message by parsing the SIB1, so as to receive the PWS message according to the scheduling information, for example, the system message block indicated by the scheduling information is received to obtain the PWS message.

Due to malicious attacks by hackers, pseudo base stations, and other equipment, there is a phenomenon of forging PWS messages in actual application scenarios. Forged PWS messages convey false disaster information to users, which can easily cause users to panic. In addition, receiving fake PWS messages will also cause power consumption issues for user equipment.

For example, when a legitimate base station sends a system message (for example, a system message carrying a paging channel configuration) to the user equipment, it is sent in clear text. Therefore, a hacker can obtain the paging channel configuration of a legitimate base station, and thus page the legitimate base station. The channel performs interference, and sends a paging message to the user equipment to instruct the user equipment to receive the PWS message. After receiving the system message, the user equipment starts to receive the PWS message according to the PWS message, which is also a PWS message forged by a hacker. So far, the user equipment has received a fake PWS message. The content of the PWS message usually contains information about the disaster that caused the panic. After receiving the PWS message, the public will cause unnecessary panic. In addition, if it is difficult for the user equipment to identify the source of the PWS message, it will also cause the user equipment to frequently receive PWS messages forged by hackers, which will increase the power consumption of the user equipment.

As another example, if the user equipment resides in a pseudo base station cell, the pseudo base station may send a paging message to the user equipment to instruct the user equipment to receive the PWS message. The user equipment starts to receive the PWS message after receiving the PWS message, and the PWS message is also a PWS message forged by a hacker. So far, the user equipment has received a fake PWS message, and the content of the PWS message can be disaster information that caused panic among the people, or spam information (such as advertisements, fraud information, etc.). After receiving the PWS message, the user equipment may cause the user to panic or cause the user equipment to receive spam information. In addition, if it is difficult for the user equipment to identify the source of the PWS message, the user equipment will always reside in the pseudo base station cell and frequently receive fake PWS messages, thereby increasing the power consumption of the user equipment.

Because the paging message and the PWS message are both sent in plain text, the user equipment cannot determine the source of the message through the plain text message. Therefore, when receiving the PWS message, the user equipment cannot distinguish the authenticity of the PWS message.

Based on the above problems, embodiments of the present application provide a method and apparatus for identifying a pseudo base station, which is used for user equipment to identify a source of a message after receiving a paging message for instructing to receive a PWS message, or to avoid receiving a forgery. PWS messages cause panic problems for the people, while avoiding the frequent power consumption of user devices by receiving fake PWS messages.

Among them, the method and the device are based on the same inventive concept. Since the principle of the method and the device for solving the problem is similar, the implementation of the device and the method can be referred to each other, and duplicated details will not be repeated.

It should be noted that, in the embodiments of the present application, multiple means two or more. In addition, it should be understood that in the description of this application, the words "first" and "second" are used only for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor as indicating Or imply order.

Application scenarios of the embodiments of the present application are described below.

The embodiment of the present application can be applied to the communication system shown in FIG. 1. The communication system includes an alarm server, a core network element, a base station, and user equipment.

The alarm server can be regarded as an application server, which can be a third-party application control platform, or it can be deployed in the operator's network to provide public warning services for user equipment in the communication system. It should be noted that the alarm server is only an expression used in the embodiments of the present application. In different network systems or network environments, the alarm server in the embodiments of the present application may be replaced with other expressions as long as the expression is used. It is sufficient to indicate a physical entity (or a virtual entity) that provides an alarm service to user equipment in the system. For example, the alarm server may also be replaced by a cell broadcast center (CBC), a cell broadcast entity (CBE), a mobile switching center (MSC), and other expressions.

The core network element is used to deliver the PWS message sent by the alarm server to the base station, which is then sent by the base station to the user equipment. Similarly, in different network standards, the type of core network element used to receive the PWS message sent by the alarm server and sent to the base station may be different. For example, in a long term evolution (LTE) system, the diagram The core network element in 1 may be a mobility management entity (MME)

The base station may be a pseudo base station or a legal base station. When the base station is a legitimate base station, the PWS message sent by the base station to the user equipment comes from the alarm server; when the base station is a fake base station, the PWS message sent by the base station to the user equipment comes from a fake base station, that is, the PWS message is a fake PWS message, which is not from the alarm server.

Before sending the PWS message to the user equipment, the base station first sends a paging message to the user equipment to instruct the user equipment to receive the PWS message. After receiving the paging message, the user equipment may use the solution provided in the embodiment of the present application to determine whether the currently camping cell is a pseudo base station cell (that is, to determine the authenticity of the PWS message), and prompt the user with the fake PWS message. , To avoid fake PWS messages causing user panic.

Specifically, the base station in FIG. 1 may be a network device (base transceiver (BTS)) in code division multiple access (CDMA), or may be a wideband band-code division multiple access (wide-band). network equipment (NodeB) in code division multiple access (WCDMA) or time division synchronization-multiple access (TD-SCDMA) can also be long term evolution (LTE) The evolutionary network equipment (evolutionary node B, eNB or e-NodeB) in the system, the 5G base station in the 5G network architecture (next generation system), or the home evolved node (HeNB), or the home base station (femto ), Pico base stations (pico), etc., the types of base stations are not specifically limited in the embodiments of the present application.

Specifically, the user equipment in FIG. 1 may be a device that provides voice and / or data connectivity to a user, a handheld device corresponding to a wireless connection function, or another processing device connected to a wireless modem. The user equipment can communicate with one or more core networks via a radio access network (RAN). The user equipment can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer corresponding to the mobile terminal. For example, it can be a portable, compact, handheld, computer-built or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiated protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA) and other devices. The terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, The remote terminal, the access terminal, the user terminal, the user agent, or the user equipment are not limited in the embodiments of the present application.

In the embodiments of the present application, the communication standard of the user equipment includes, but is not limited to, CDMA, WCDMA, TD-SCDMA, LTE, 5G, and the like.

In the following, the pseudo base station identification scheme provided in this application will be described in detail in three embodiments.

Example one

Referring to FIG. 2, it is a schematic flowchart of a pseudo base station identification method according to an embodiment of the present application. The method includes the following steps:

S201: The user equipment receives a paging message sent by a base station to which the currently camping first cell belongs.

The paging message is used to instruct the user equipment to receive the PWS message.

As mentioned before, before sending the PWS message to the user equipment, the base station instructs the user equipment to receive the PWS message through the paging message. After receiving the paging message, the user equipment may receive a PWS message.

It should be noted that, in the embodiment of the present application, in S202, it is determined whether the base station sending the paging message is a pseudo base station. Therefore, when the base station is determined to be a pseudo base station, the user equipment can selectively receive the PWS message, that is, The user equipment may choose to receive the PWS message or not to receive the first PWS. The specific implementation details of the user equipment selectively receiving the PWS message will be described later, and will not be repeated here.

S202: The user equipment determines whether the message type of the PWS message is consistent with the type of the PWS message supported by the operator providing services for the user equipment.

In practical applications, different operators in different countries and regions support different types of PWS messages. PWS message types include, but are not limited to, commercial mobile early warning system (commercial mobile alert service (CMAS)), earthquake tsunami warning system (earthquake and tsunami warning system (ETWS)), European public warning system (european public warning system (EU-Alert), Korea) Korean public alert system (KPAS), disaster and emergency early warning network (DEWN).

Exemplarily, the PWS message type supported by the US operator is CMAS, the PWS message type supported by the Japanese operator is ETWS, and the PWS message type supported by the European operator may be EU-Alert.

Of course, the PWS message types in the embodiments of the present application are not limited to the types in the above examples. The PWS message types described in the embodiments of the present application may also include other PWS message types proposed by other countries, regions, and operators. For example, as different public alarm systems are introduced in various countries and regions, the PWS message types in the embodiments of the present application may further include the types of these newly launched PWS messages.

In practical applications, the above-mentioned different types of PWS messages such as CMAS, ETWS, EU-Alert, KPAS, DEWN are usually carried in different system message blocks. For example, ETWS is carried in SIB10 and SIB11, and CMAS is carried in SIB12. Therefore, in the embodiment of the present application, the type of the PWS message can be identified by a system message block carrying the PWS message.

Of course, with the increasing number of PWS message types, it may happen that the same system message block is used to carry two types of PWS messages. At this time, other characteristics can be used to identify the type of PWS messages, as long as the characteristics can be used to distinguish CMAS, ETWS, EU-Alert, KPAS, DEWN and other different types of PWS messages are sufficient.

The following describes the specific ways to obtain the PWS message types supported by the operators that provide services for user equipment and the message types of PWS messages.

I. Specific ways to obtain PWS message types supported by operators that provide services for user equipment

In the embodiment of the present application, a PWS message type supported by an operator serving a user equipment may be determined in the following manner: the user equipment determines a message type of the PWS message in S202 and a PWS message supported by an operator serving a user equipment Before the types are the same, the user equipment may determine, according to the configuration information of the first cell and the message type configuration list, a PWS message type supported by an operator that provides services to the user equipment. The message type configuration list is used to indicate a correspondence between at least one operator and a message type of a PWS message supported by the operator.

The configuration information of the first cell includes at least one of the following: a public land mobile network (PLMN) identifier of the first cell; a tracking area code (TAC) of the first cell; and a first cell Cell identification code (Cell ID); location information of the first cell.

Specifically, the location information of the first cell may be acquired by means of satellite positioning, base station-based measurement, and the like.

Generally, when the user equipment leaves the factory and / or when the user equipment accesses the network, the user equipment obtains the above message type configuration list, which is used to indicate the PWS messages supported by different operators (in each country or region) Message type. For example, the message type configuration list may be used to indicate that the PWS message type supported by the US operator is CMAS, and the PWS message type supported by the Japanese operator is ETWS. After the user equipment receives the paging message, the user equipment can learn the current location of the user equipment (for example, the current country, region, city, etc.) through the configuration information of the first cell, and then determine that it is currently the user based on the current location of the user equipment. The operator that the device provides services to. Then, the user equipment can obtain the PWS message type supported by the operator currently serving the user equipment by querying the message type configuration list.

Exemplarily, the message type configuration list in user equipment A is used to indicate that the message type of PWS messages supported by operator 1 is a, the message types of PWS messages supported by operator 2 are b and c, and the PWS messages supported by operator 3 The message has a message type of d. After receiving the paging message, the user equipment A determines that the operator currently serving the user equipment A is the operator 2 according to the configuration information of the first cell. Then, the user equipment may determine the PWS message types supported by the operator currently serving the user equipment as b and c by querying the message type configuration list saved by itself.

In addition, in the embodiment of the present application, the user equipment (for example, an application processor in the user equipment) may also update the message type configuration list, so that the user equipment can update the message type configuration list in time, so that the The types of PWS messages supported by the operators that the equipment provides are more accurate.

Specifically, when the user equipment updates the message type configuration list, there are multiple ways that the user equipment can adopt. Here are four of them.

Exemplarily, the user equipment may update the message type configuration list according to an instruction of the base station. When the message type configuration list is updated, the upper-layer application server (such as the alarm server) will notify the user equipment to update the message type configuration list through the core network element and the base station. After receiving the instruction from the base station, the user equipment can update the message. Type configuration list is updated.

Exemplarily, the user equipment may update the message type configuration list by querying an alarm server, which is an application server providing a public early warning service. In addition to the manner in which the user equipment passively receives the update of the message type configuration list, the user equipment may also actively query whether the message type configuration list is updated.

Exemplarily, the user equipment may update the message type configuration list through a software upgrade process of the user equipment. In other words, when the user equipment performs a software package upgrade, it can update the message type configuration list saved by itself at the same time.

Exemplarily, the user equipment may update the message type configuration list through a software upgrade process of a subscriber identification (SIM) card in the user equipment. In other words, when the user equipment performs software package upgrade on the SIM card, it can update the message type configuration list saved by itself at the same time.

Second, the specific way to get the message type of the PWS message

The specific method of obtaining the PWS message types supported by the operator that provides services for user equipment has been described above. When determining whether the base station is a pseudo base station, it is further determined according to the message type of the PWS message. The following describes the specific manner in which the user equipment obtains the message type of the PWS message.

In the embodiment of the present application, the specific manner in which the user equipment obtains the message type of the PWS message includes, but is not limited to, the following two types.

method one

In the first method, the message type of the PWS message can be determined according to the paging message. As mentioned before, the paging message is used to instruct the user equipment to receive the PWS message. The paging message carries the indication information of the PWS message. After receiving the paging message, the user equipment can determine the message type of the PWS message.

Way two

In the second method, after receiving the paging message, the user equipment may determine the message type of the PWS message according to the SIB1 in the system message. After receiving the paging message, the user equipment triggers the user equipment to receive the PWS message. As mentioned earlier, PWS messages can be regarded as a type of system messages (that is, PWS messages are carried in a certain system message block). When receiving a PWS message, the user equipment first receives the MIB and SIB1 in the system message, and then receives the PWS message according to the dispatching letter of the PWS message carried in the SIB1. The scheduling information of the PWS message includes, but is not limited to, the message type of the PWS message and the indication information of the system message block carrying the PWS message. Therefore, after receiving the SIB1, the user equipment can determine the message type of the PWS message according to the scheduling information of the PWS message.

S203: When the message type of the PWS message is inconsistent with the PWS message type supported by the operator, the user equipment determines that the base station is a pseudo base station.

It should be noted that in S203, when the user equipment determines that the message type of the PWS message is inconsistent with the type of the PWS message supported by the operator providing the user equipment, it determines that the base station is a pseudo base station. Here, the meaning of the pseudo base station is various. For example, the pseudo base station here can understand the real pseudo base station equipment, and can also be understood as a pseudo base station simulated by a hacker.

As described above, when the user equipment determines that the base station is a pseudo base station in S203, it can selectively receive a PWS message. In a possible example, after receiving the paging message in S201, the user equipment does not need to receive the PWS message immediately, as in the prior art, but instead first determines the message type of the PWS message and the operator that provides services to the user equipment. The supported PWS message types are compared; if the two are the same, then the PWS message is received, and if the two are not the same, the PWS message may not be received.

Of course, in the case that the base station is determined to be a pseudo base station in S203, the user equipment may also choose to receive the PWS message, which is not specifically limited in the comparison of the embodiments of this application.

After determining the PWS message type and the PWS message type supported by the operator providing the user equipment, the user equipment can determine whether the message type of the PWS message is consistent with the PWS message type supported by the operator providing the user equipment. , So as to determine whether the base station is a pseudo base station according to the determination result. When the user equipment determines that the message type of the PWS message is inconsistent with the type of PWS message supported by the operator providing the user equipment, it determines that the base station is a pseudo base station.

In actual implementation, after determining that the base station is a pseudo base station, the user equipment may further prompt the user to camp on the pseudo base station cell, and / or prompt the user that the PWS message is a fake PWS message. After seeing the prompt, the user will not cause panic because of the content of the PWS message. Specifically, an application processor (AP) in the user equipment may prompt the user through the interface pop-up display, sound, vibration, and flash.

It should be noted that, in the first embodiment provided by the present application, the user equipment determines that the base station is a pseudo base station when determining that the message type of the PWS message is inconsistent with the type of the PWS message supported by the operator providing the user equipment. However, when the message type of the PWS message is consistent with the type of the PWS message supported by the operator providing the user equipment, the user equipment cannot judge that the base station is not a pseudo base station. This is because when a fake base station forges a PWS message, the message type of the fake PWS message may be consistent with the PWS message type supported by the operator that provides service to the user equipment. In this case, it can be further determined whether the base station is a pseudo base station through other embodiments provided in this application.

In addition, after the user equipment determines that the base station is a fake base station, it can take corresponding measures to restrict the communication of the user equipment on the base station to prevent the user equipment from staying in the fake base station cell for a long time, thereby preventing the user equipment from frequently receiving fake PWS messages. Brings power consumption issues to user equipment.

After the user equipment determines that the base station is a pseudo base station, the user equipment may add the cell information of the first cell to a prohibited camping list, and the prohibited camping list is used to instruct the user equipment to prohibit camping on the cell information recorded in the prohibited camping list. Corresponding cell.

It should be noted that the banned list is only an expression provided in the embodiments of the present application, and it can also be replaced by other expressions, such as a cell restricted list or a bar list, as long as the expression can be used to indicate that the user is forbidden The cell information of the cell where the device resides is sufficient.

The cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a physical cell ID (PCI) of the first cell; and an E- UTRA absolute radio frequency channel number (E-UTRA absolute frequency channel number, EARFCN).

Further, after the user equipment adds the cell information of the first cell to the forbidden camping list, the user equipment may perform a cell search again in the current system. If the user equipment searches for available cells in the current system, the cell search results are based on the cell search results. Camping to a second cell, and the cell information of the second cell is not recorded in the prohibited camping list.

That is, after adding the cell information of the first cell to the forbidden camping list, when the user equipment performs a cell search again, it needs to delete the cells in the forbidden camping list (that is, the first cell), and only searches under the current system. Only when the available cell (that is, the second cell) is not on the camping list, the cell is selected to camp on the cell.

In addition, after the user equipment performs a cell search in the current system, if the user equipment does not search for an available cell in the current system, the user equipment may switch to a system other than the current system for the cell search. For example, when the current communication standard is long-term evolution LTE, the user equipment may disable LIE and trigger a search to the 2G or 3G standard network. Alternatively, after the user equipment performs a cell search, if the user equipment does not search for an available cell under the current system, the user equipment may delete the cell information of the first cell from the forbidden camping list and camp on the first cell again.

When there is no available cell in the current system, switching to another system for cell search can prevent the user equipment from camping in the pseudo base station cell; if the available cell is not available in the current system, the first cell is re-residented, which can avoid the user equipment. No cell is available under the current system.

In actual implementation, the method shown in FIG. 2 may be executed through cooperation between an AP in a user equipment and a cellular processor (CP) (also referred to as a modem). Among them, the AP can be regarded as a processor for performing data plane processing in the user equipment; the CP can be regarded as a processor for performing signal plane processing in the user equipment. In the method shown in FIG. 2, the message type configuration list may be stored in the AP. After the user equipment receives the paging message, the AP delivers the message type configuration list to the CP. The CP may perform subsequent operations to determine whether the base station is a pseudo base station, and may perform corresponding processing when the base station is a pseudo base station, so as to prevent the user equipment from staying in the pseudo base station cell for a long time.

Using the method shown in FIG. 2, after receiving a paging message (for instructing the user equipment to receive a PWS message), the user equipment can determine the message type of the PWS message and the type of PWS message supported by the operator that provides service to the user equipment. In the case of inconsistency, it is determined that the base station is a pseudo base station. Because the type of PWS messages supported by an operator is limited, when the paging message indicates that the type of PWS message received by the user equipment is a type that is not supported by the current operator, the user equipment can determine that the PWS message is not from the operator's network. That is, it is determined that the PWS message is a fake PWS message. Therefore, the method shown in FIG. 2 can be used to accurately identify whether the base station is a fake base station (that is, to determine the source of the PWS message), and then determine the authenticity of the PWS message to avoid the panic caused by the fake PWS message.

Further, using the solution of the first embodiment can also perform corresponding processing on the pseudo base station cell to prevent the user equipment from camping on the pseudo base station cell again, thereby preventing the user equipment from receiving the fake PWS message on the pseudo base cell again, thereby avoiding causing The user panics, and at the same time, reduces the power consumption of the user equipment caused by receiving fake PWS messages.

Example two

Referring to FIG. 3, it is a schematic flowchart of a pseudo base station identification method according to an embodiment of the present application. The method includes the following steps:

S301: The user equipment receives a PWS message sent by a base station to which the currently camping first cell belongs.

Before the user equipment receives a PWS message sent by the base station to which the currently camping first cell belongs, the user equipment may receive a paging message sent by the base station, and the paging message is used to instruct the user equipment to receive the PWS message.

That is, similar to the prior art, in the method shown in FIG. 3, before sending a PWS message to the user equipment, the base station instructs the user equipment to receive the PWS message through a paging message. After receiving the paging message, the user equipment may receive a PWS message.

S302: When determining that the content of the PWS message is spam, the user equipment determines that the base station is a pseudo base station.

It should be noted that, in S302, when the user equipment determines that the content of the PWS message is spam, the base station determines that the base station is a pseudo base station. Here, the meaning of the pseudo base station is various. For example, the pseudo base station here can understand the real pseudo base station equipment, and can also be understood as a pseudo base station simulated by a hacker.

In S302, when determining that the content of the PWS message is spam, the user equipment determines that the base station is a pseudo base station. For example, the user equipment may determine that the content of the PWS message is spam if the content of the PWS message contains advertising information or contains information such as pornography, reaction, and violence, and then determine that the base station is a pseudo base station.

In actual implementation, after determining that the base station is a pseudo base station, the user equipment may further prompt the user to camp on the pseudo base station cell, and / or prompt the user that the PWS message is a fake PWS message. After seeing the prompt, the user will not cause panic because of the content of the PWS message. Specifically, the AP in the user equipment may prompt the user through the interface popup display, sound, vibration, and flash.

It should be noted that in the second embodiment provided in this application, when the user equipment determines that the content of the PWS message is spam, it determines that the base station is a pseudo base station. However, when the content of the PWS message is not spam, the user equipment cannot judge based on this that the base station is not a pseudo base station. This is because the content of the PWS message forged by the fake base station may be false information, such as fictional earthquake and tsunami disaster information. After receiving the PWS message of such content, the user equipment is difficult to distinguish the source of the message and the authenticity of the message content. Therefore, in the second embodiment, when the content of the PWS message is not spam, it is difficult for the user equipment to determine whether the base station is a pseudo base station. In this case, it can be further determined whether the base station is a pseudo base station through other embodiments provided in this application.

In addition, after the user equipment determines that the base station is a fake base station, it can take corresponding measures to restrict the communication of the user equipment on the base station to prevent the user equipment from staying in the fake base station cell for a long time, thereby preventing the user equipment from frequently receiving fake PWS. Messages cause power consumption issues for user equipment.

The function of the banned list is the same as the function of the banned list in the first embodiment. For related description, refer to the first embodiment, and details are not described herein again.

The cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a PCI of the first cell; and an EARFCN of the first cell.

Similarly, in actual implementation, the method shown in FIG. 3 may also be executed by cooperation between an AP and a CP in a user equipment. Among them, the CP in the user equipment can report the PWS message to the AP after receiving the PWS message, and the AP recognizes the content of the PWS message. If the AP recognizes that the content of the PWS message is spam, it reports it to the CP and the CP performs the Handle accordingly.

With the method shown in FIG. 3, after receiving the PWS message, the user equipment may determine that the base station is a pseudo base station in a case where the content of the PWS message is determined to be spam. Since the alarm server does not push spam information to the user equipment through the operator's network, when the content of the PWS message is spam, the user equipment can determine that the PWS message does not come from the operator's network, that is, the PWS message is judged to be fake PWS message. Therefore, the method shown in Figure 3 can be used to accurately identify whether the base station is a fake base station (that is, to determine the source of the PWS message), and then determine the authenticity of the PWS message to avoid the panic caused by the fake PWS message.

Further, using the solution of the second embodiment can also perform corresponding processing on the pseudo base station cell to prevent the user equipment from camping on the pseudo base station cell again, thereby preventing the user equipment from receiving the fake PWS message on the pseudo base cell again, thereby preventing the The user panics, and at the same time, reduces the power consumption of the user equipment caused by receiving fake PWS messages.

It can be seen from the above description of the first embodiment and the second embodiment that the difference between the first embodiment and the second embodiment is that in the first embodiment, the message type of the PWS message can be performed after receiving the paging message. Determine, and further determine whether the base station is a pseudo base station. In this process, the user equipment may choose not to receive the PWS message, and then selectively receive the PWS message according to the judgment result after determining the above judgment result. In the second embodiment, the user equipment may only receive the PWS message after receiving the PWS message. The content of the PWS message determines whether the base station is a pseudo base station. In actual implementation, the first embodiment or the second embodiment may be selected according to different scenarios and needs, or the first implementation and the second implementation may be executed, which is not specifically limited in this application.

Example three

Referring to FIG. 4, it is a schematic flowchart of a pseudo base station identification method according to an embodiment of the present application. The method includes the following steps:

S401: The user equipment receives a PWS message sent by a base station to which the currently camping first cell belongs.

That is, similar to the prior art, in the method shown in FIG. 4, before sending a PWS message to the user equipment, the base station instructs the user equipment to receive the PWS message through a paging message. After receiving the paging message, the user equipment may receive a PWS message.

S402: When the user equipment is in a connected state, the user equipment communicates with the alarm server.

Among them, the alarm server is an application server that provides public early warning services. For the deployment and functions of the alarm server, please refer to the related description in the application scenario shown in FIG. 1, which will not be repeated here.

It is not difficult to see that the process that the user equipment receives the paging message and the PWS message are both passive receiving processes. After the user equipment camps in the first cell, it passively receives the paging message, and then receives the PWS according to the instruction of the paging message. Message. It is difficult for the user equipment to know the source of the paging message and the PWS message. In S402, the user equipment actively communicates with the alarm server used to trigger the sending of PWS messages, so that it can actively obtain the real PWS message, and then based on the real PWS message obtained from the alarm server to the previously received PWS message. To identify the source and authenticity. The specific implementation manner will be described in detail in the introduction later in the third embodiment, and will not be repeated here.

It should be noted that, in S402, the communication between the user equipment and the alarm server can be performed through the base station and the core network. For simplicity and simplicity in FIG. 4, the intermediate process is omitted, and the interaction between the user equipment and the alarm server is directly indicated.

It should be understood that when the user equipment is in a connected state, the base station that establishes a connection with the user equipment is a legal base station, and the user equipment can communicate with the alarm server through the legal base station and the core network. The meaning of the legal base station here is different from that of the base station that sends the PWS message to the user equipment in S401. The base station in S401 may be the legal base station or a pseudo base station simulated by a hacker.

Exemplarily, the case where the base station is a pseudo base station simulated by a hacker may be: a hacker obtains a system message and a paging message carrying a paging channel configuration sent by a legitimate base station (established a connection with the user equipment) in plain text, and thus The hacker can simulate the paging channel configuration of the legitimate base station to send a paging message to the user equipment, and then send a PWS message. In this case, although the user equipment establishes a connection with a legitimate base station, the user equipment may still receive a fake PWS message sent by a fake base station simulated by a hacker. The method shown in Figure 4 is set up to identify this situation. In S402, the user equipment actively initiates communication with the alarm server in the connected state, and the signaling interaction between the user equipment and the legitimate base station is performed through a dedicated channel, and it is difficult for a hacker to interfere with the dedicated channel. In this case, the information obtained by the user equipment from the alarm server is non-interfering information, so the authenticity of the previously received PWS message can be judged based on this information.

S403: The user equipment determines that the base station is a pseudo base station if the alarm server does not trigger a PWS message update or the PWS message is a tampered PWS message.

It should be noted that the user equipment in S403 determines that the base station is a pseudo base station when the alarm server does not trigger the PWS message or the PWS message is a tampered PWS message. Here, the meaning of the pseudo base station is various. For example, the pseudo base station here can understand the real pseudo base station equipment, and can also be understood as a pseudo base station simulated by a hacker.

In S403, if the user equipment queries that the alarm server does not trigger the PWS message or that the PWS message is a tampered PWS message, it indicates that the PWS message does not come from the alarm server, which means that the base station is a pseudo base station. This is because: It is difficult for the base station to interfere with the communication initiated by the connected user equipment with the alarm server, so the information obtained by the user equipment by querying the alarm server is uninterrupted information. When the uninterfered information does not match the PWS message, it means that the PWS message is forged, that is, the base station is a fake base station.

In S403, there are multiple ways for the user equipment to communicate with the alarm server, three of which are listed below.

The first

The user equipment queries whether the alarm server triggers a PWS message update within the first set time period. The first set duration can be configured.

For example, if the user equipment queries that the alarm server is within the first set time period and triggers a PWS message update (that is, the PWS message is not issued), it can be determined that the PWS message is a fake PWS message, and then the base station is determined to be a fake base station .

Second

The user equipment queries the content of the second PWS message sent by the alarm server last time, and compares the content of the second PWS message with the content of the PWS message.

Exemplarily, after comparing the content of the second PWS message with the content of the PWS message, if the content of the second PWS message is found to be inconsistent with the content of the PWS message, the user equipment may determine that the PWS message is a fake PWS message, It is further determined that the base station is a pseudo base station; if the content of the second PWS message is found to be consistent with the content of the PWS message, it may be determined that the PWS message is a real PWS message, and then it is determined that the base station is not a pseudo base station.

Third

The user equipment instructs the alarm server to resend the third PWS message and / or the third PWS message check code stream that was sent last in an asymmetric encryption and decryption method; the user equipment compares the content of the third PWS message with the content of the PWS message Yes, and / or, the check code stream of the third PWS message is compared with the check code stream of the PWS message.

The understanding of the asymmetric encryption and decryption method may be: the alarm server uses the public key to encrypt the third PWS message and / or the check code stream of the third PWS message; the user device uses the private key to decrypt the received information To obtain a third PWS message and / or a check code stream of the third PWS message. Because the public key used by the alarm server and the private key used by the user device are a key pair, the public key is the public part of the key pair, and the private key is the non-public part, which is stored only by the user device. Only the private key saved by the user device can be used to decrypt the information encrypted by the public key. Therefore, the asymmetric encryption and decryption method can be used to prevent the third PWS message and / or the check code stream of the third PWS message from being tampered with, and improve the check code stream of the third PWS message and / or the third PWS message received by the user equipment. Authenticity and accuracy.

After the user equipment decrypts and obtains the third PWS message, it can compare the content of the third PWS message with the content of the PWS message; after decrypting and obtaining the check code stream of the third PWS message, the user equipment can calculate the PWS in the same way. The check code stream of the message can further compare the check code stream of the third PWS message with the check code stream of the PWS message.

If the user equipment finds that the PWS message is inconsistent with the third PWS message, or finds that the check code stream of the third PWS message is inconsistent with the check code stream of the PWS message, the user equipment can judge that the PWS message is a fake PWS message, and further It is determined that the base station is a pseudo base station. If the above-mentioned inconsistency does not exist, the user equipment may judge the PWS message to be a real PWS message according to this, and then determine that the base station is not a pseudo base station.

In addition, in the third method, the alarm server may also learn from the integrity check method when sending the third PWS message and / or the check code stream of the third PWS message. Taking the third PWS message as an example, when sending the third PWS message, the alarm server uses the public key to encrypt the digest value of the third PWS message, and then sends the third PWS message and the encrypted third PWS message to the user device. Summary value. After receiving the information sent by the alarm server, the user equipment may use the private key to decrypt the encrypted digest value of the third PWS message to obtain the digest value of the third PWS message. At the same time, the user equipment may use the same algorithm to calculate the digest value of the received third PWS message. Then, the user equipment compares the decrypted digest value with the calculated digest value. If they are the same, it means that the third PWS message has not lost data during transmission (that is, the third PWS message is complete). The content of the third PWS message can be compared with the content of the PWS message.

In actual implementation, after determining that the base station is a pseudo base station in S403, the user equipment may further prompt the user to camp on the pseudo base station cell, and / or prompt the user that the PWS message is a fake PWS message. After seeing the prompt, the user will not cause panic because of the content of the PWS message. Specifically, the AP in the user equipment may prompt the user through the interface popup display, sound, vibration, and flash.

It should be noted that in the third embodiment provided by the present application, when the user equipment queries that the alarm server does not trigger the PWS message or finds that the PWS message is a tampered PWS message, it determines that the base station is a pseudo base station. In addition, when the user equipment queries that the PWS message has been triggered by the alarm server, and the PWS message is consistent with the content of the PWS message most recently issued by the alarm server, the user equipment can judge that the base station is not a pseudo base station.

That is, according to the third embodiment provided in this application, it can be accurately determined whether the base station is a pseudo base station.

In addition, after determining that the base station is a fake base station, the user equipment can take corresponding measures to restrict the communication of the user equipment on the base station to prevent the user equipment from staying in the fake base station cell for a long time, thereby preventing the user equipment from frequently receiving fake PWS messages. Brings power consumption issues to user equipment.

The function of the banned list is the same as that of the banned list in the first embodiment. For related description, refer to the first embodiment, and details are not described herein again.

The above is the description of the pseudo base station identification method provided in the third embodiment when the user equipment processes the connection state. In the case where the user equipment handles the idle state, the following method can be used to identify whether the base station is a pseudo base station: After the user equipment receives a PWS message sent by the base station to which the currently camping first cell belongs, when the user equipment is in the idle state , The user equipment may trigger the establishment of the chain; then, if the user equipment fails to establish the chain, the base station determines that the base station is a pseudo base station.

When the user equipment resides in a legal base station cell, if the user equipment actively initiates a chain establishment, the chain establishment between the user equipment and the base station is successful, so that the user equipment can be switched to a connected state for normal communication with the base station; while the user equipment resides in the In the case of a pseudo base station cell, since it is difficult for the pseudo base station to perform two-way authentication with the user equipment, if the user equipment actively initiates a chain establishment, the chain establishment may fail. Therefore, in the third embodiment, it can be determined whether the base station is a legitimate base station by triggering whether the user equipment successfully establishes the chain.

Exemplarily, the second set duration may be set as T * Rand. Among them, T can adopt the network configuration, the unit is ms; Rand can generate a random number between 0 and 1 for the user equipment.

It should be noted that, in the third embodiment, if the user equipment successfully establishes a chain, it does not mean that the base station is a legitimate base station. This is because the legal base station may be successfully established with the user equipment, but the base station sending the PWS message to the user equipment may be a pseudo base station simulated by a hacker. The hacker obtains the paging channel configuration system message and paging message sent by the legitimate base station (which successfully established a link with the user equipment) in clear text, so the hacker can simulate the paging channel configuration of the legitimate base station and send it to the user equipment. Paging message, and then send PWS message. In this case, although the user equipment establishes a connection with a legitimate base station, the user equipment may still receive a fake PWS message sent by a fake base station simulated by a hacker.

Then, in the case that the user equipment successfully establishes the chain, it can be further judged whether the base station is a pseudo base station through a similar method as described above. That is, after the user equipment triggers the chain establishment, the user equipment can communicate with the alarm server after the chain establishment is successful. Then, when the user equipment queries that the alarm server has not triggered the PWS message update or the PWS message is a tampered PWS message, To determine that the base station is a pseudo base station.

In this implementation, the user equipment is already in a connected state. The user equipment communicates with the alarm server, and determines that the base station is a pseudo base station when it is found that the alarm server has not triggered the PWS message update or the PWS message is a tampered PWS message. For specific implementations, refer to the relevant steps in S402 and S403. The description is not repeated here.

Using the method shown in FIG. 4, after receiving the PWS message, the user equipment can actively communicate with the alarm server, and determine whether the alarm server has not triggered the PWS message update or the PWS message is a tampered PWS message. The base station is a pseudo base station. Since it is difficult for the pseudo base station to interfere with the communication initiated by the connected user equipment with the alarm server, the information obtained by the user equipment by querying the alarm server is non-interfering information. When the uninterfered information does not match the PWS message, it means that the PWS message is forged, that is, the base station is a fake base station. Therefore, the method shown in FIG. 4 can be used to accurately identify whether the base station is a fake base station (that is, to determine the source of the PWS message), and then determine the authenticity of the PWS message to avoid the panic caused by the fake PWS message.

Further, using the solution of the third embodiment can also perform corresponding processing on the pseudo base station cell to prevent the user equipment from camping on the pseudo base station cell again, thereby preventing the user equipment from receiving the fake PWS message on the pseudo base cell again, thereby avoiding causing The user panics, and at the same time, reduces the power consumption of the user equipment caused by receiving fake PWS messages.

It can be seen from the foregoing descriptions of the first, second, and third embodiments that the implementation of the first and the second embodiments is relatively simple, but the first and the second embodiments can only be performed when certain conditions are met. It is judged that the base station is a pseudo base station, but it cannot be accurately identified as a legitimate base station. In the solution provided in the third embodiment, not only can the base station be judged to be a pseudo base station, but also the base station can be determined to be a legitimate base station if certain conditions are met. This solution is relatively comprehensive. In actual implementation, the first embodiment, the second embodiment, or the third embodiment may be selected and executed according to different scenarios and needs, or any two or three of the first embodiment, the second embodiment, and the third embodiment may be used in combination. This embodiment of the present application does not specifically limit this.

Specifically, when the first embodiment and the second embodiment are used in combination, the user equipment may first determine whether the type of the received PWS message indicated by the paging message is consistent with the type of the PWS message supported by the operator providing the user equipment. When the two are consistent, the user equipment may further identify the content of the PWS message. If the content of the PWS message is identified as spam, it may be determined that the base station sending the paging message is a pseudo base station. Of course, the user equipment may also first determine whether the base station is a pseudo base station according to the solution provided in the second embodiment, and then determine according to the solution provided in the first embodiment.

Exemplarily, a schematic flow chart of the solution using the first embodiment and the second embodiment in combination can be shown in FIG. 5.

Specifically, when the first embodiment, the second embodiment, and the third embodiment are used in combination, the user equipment may first determine whether the type of the received PWS message is indicated by the paging message and the type of the PWS message supported by the operator providing the user equipment. Consistent. If the two are consistent, the user equipment may further identify the content of the PWS message. If it is identified that the content of the PWS message is not spam, the user equipment can actively communicate with the alarm server when it is connected. If it is found that the alarm server has not triggered the PWS message update or the PWS message received by the user equipment has been tampered, then The user equipment may determine that the base station sending the PWS message is a pseudo base station.

Exemplarily, a schematic flowchart of the foregoing solution of combining the first embodiment, the second embodiment, and the third embodiment may be shown in FIG. 6.

Based on the same inventive concept, an embodiment of the present application further provides a pseudo base station identification device, which can be used to execute any one of the methods shown in FIG. 2, FIG. 3, and FIG. 4. Referring to FIG. 7, the apparatus 700 includes a transceiver module 701 and a processing module 702.

Specifically, when the apparatus 700 is configured to execute the method shown in FIG. 2, the transceiver module 701 is configured to receive a paging message sent by a base station to which the currently camping first cell belongs, and the paging message is used to instruct a user equipment to receive a public early warning system. PWS message. Processing module 702 is configured to determine whether the message type of the PWS message is consistent with the type of PWS message supported by the operator that provides service to the user equipment; the message type of the PWS message is supported by the operator that provides service to the user equipment When the types of PWS messages are inconsistent, it is determined that the base station is a pseudo base station.

The message type of the PWS message is used to indicate a system message block that carries the PWS message. Exemplarily, the message type of the PWS message is any one of the following: CMAS; ETWS; EU-Alert; KPAS; DEWN. After determining that the base station is a pseudo base station, the processing module 702 may prompt the user of the user equipment that the user equipment currently resides in a pseudo base station cell.

In addition, the processing module 702 is further configured to: after determining whether the message type of the PWS message is consistent with the PWS message type supported by the operator, and when the message type of the PWS message is consistent with the PWS message type supported by the operator, The content of the message is identified; then, if the content of the PWS message is spam, it is determined that the base station is a pseudo base station.

In addition, the processing module 702 is further configured to: after determining whether the message type of the PWS message is consistent with the PWS message type supported by the operator, and when the message type of the PWS message is consistent with the PWS message type supported by the operator, when the user When the device is in the connected state, it communicates with the alarm server through the transceiver module 701, which is an application server that provides public warning services; then, when the alarm server is queried, the PWS message update is not triggered or the PWS message is queried as a tampered PWS. In the case of a message, it is determined that the base station is a pseudo base station.

Optionally, the processing module 702 is further configured to: before determining whether the message type of the PWS message is consistent with the PWS message type supported by the operator 70, determine the operator according to the configuration information of the first cell and the message type configuration list Supported PWS message types. The message type configuration list is used to indicate the correspondence between at least one operator and the message types of PWS messages supported by the operator; and to obtain the message types of PWS messages.

The configuration information of the first cell includes at least one of the following: a PLMN identity of the first cell; a TAC of the first cell; a Cell ID of the first cell; and location information of the first cell.

In order to prevent the user equipment from staying in the pseudo base station cell for a long time, the processing module 702 is further configured to: after determining that the base station is a pseudo base station, add the cell information of the first cell to the prohibition list, and the prohibition list is used to indicate the user equipment It is forbidden to camp on the cell corresponding to the cell information recorded in the forbidden camping list.

In addition, the processing module 702 is further configured to: after adding the cell information of the first cell to the forbidden camping list, perform a cell search in the current system; if an available cell is found in the current system, camp on the cell according to the cell search result. The second cell, the cell information of the second cell is not recorded in the prohibited camping list.

If no available cell is found in the current system, the processing module 702 is further configured to: switch to a system other than the current system to perform a cell search; or delete the cell information of the first cell from the forbidden camping list. And residing in the first cell.

Optionally, the processing module 702 is further configured to: update the message type configuration list.

Specifically, the processing module 702 may update the message type configuration list in at least one of the following ways: the processing module 702 updates the message type configuration list according to an instruction of the base station; the processing module 702 queries the alarm server to configure the message type configuration The list is updated, and the alarm server is an application server that provides public warning services; the processing module 702 updates the message type configuration list through the software upgrade process of the user device; the processing module 702 configures the message type through the software upgrade process of the SIM card in the user device The list is updated.

Specifically, when the apparatus 700 is configured to execute the method shown in FIG. 3, the transceiver module 701 is configured to receive a PWS message sent by a base station to which the first cell currently resides; and the processing module 702 is configured to determine that the content of the PWS message is In the case of spam, it is determined that the base station is a pseudo base station.

After determining that the base station is a pseudo base station, the processing module 702 may prompt the user of the user equipment that the user equipment currently resides in a pseudo base station cell.

The transceiver module 701 is further configured to: before receiving a PWS message sent by the base station to which the currently camping first cell belongs, receive a paging message sent by the base station, and the paging message is used to instruct the user equipment to receive the PWS message.

In order to prevent the user equipment from staying in the pseudo base station cell for a long time, the processing module 702 is further configured to: after determining that the base station is a pseudo base station, add the cell information of the first cell to the prohibited camping list, and the prohibited camping list is used to instruct the user equipment to prohibit A cell corresponding to the cell information recorded in the forbidden camping list.

Specifically, when the apparatus 700 is configured to execute the method shown in FIG. 4, the transceiver module 701 is configured to receive a PWS message sent by a base station to which the currently camping first cell belongs; a processing module 702 is configured to be used when the user equipment is in a connected state. Communicate with the alarm server through the transceiver module 701. The alarm server is an application server that provides public warning services. The processing module 702 is also used to query that the alarm server does not trigger a PWS message update or that the PWS message is a tampered PWS message. In this case, it is determined that the base station is a pseudo base station.

When the device 700 is used to execute the method shown in FIG. 4, when the processing module 702 communicates with the alarm server through the transceiver module 701, it is specifically used for: the processing module 702 queries the alarm server through the transceiver module 701 whether the alarm server is within the first set duration. Trigger a PWS message update; or, the processing module 702 queries the content of the second PWS message sent by the alarm server through the transceiver module 701, and compares the content of the second PWS message with the content of the PWS message; or, the processing module 702 passes The transceiver module 701 instructs the alarm server to resend the third PWS message and / or the third PWS message check code stream that was sent last in an asymmetric encryption and decryption manner; the processing module 702 compares the content of the third PWS message with the content of the PWS message Compare, and / or, compare the check code stream of the third PWS message with the check code stream of the PWS message.

In addition, the transceiver module 701 is further configured to: before receiving a PWS message sent by a base station to which the first cell currently resides, receive a paging message sent by the base station, and the paging message is used to instruct the user equipment to receive the PWS message.

In order to prevent the user equipment from staying in the pseudo base station cell for a long time, the processing module 702 is further configured to: after determining that the base station is a pseudo base station, add the cell information of the first cell to the forbidden list, and the forbidden list is used to indicate the user equipment. It is forbidden to camp on the cell corresponding to the cell information recorded in the forbidden camping list.

For the user equipment in the idle state, after receiving the PWS message sent by the base station to which the first cell currently resides, if the user equipment is in the idle state, the processing module 702 triggers the establishment of a chain through the transceiver module 701; then, the processing module 702 In the case that the link establishment fails, the base station is determined to be a pseudo base station.

In order to prevent multiple user equipments from triggering the chain establishment at the same time, when the processing module 702 triggers the chain establishment through the transceiver module 701, the processing module 702 is specifically configured to: the processing module 702 triggers the chain establishment through the transceiver module 701 after waiting for the second set duration.

Among them, the processing module 702 is further configured to: after triggering the chain establishment, communicate with the alarm server through the transceiver module 701 after the chain establishment is successful; when the query of the alarm server does not trigger the PWS message update or the query of the PWS message as a tampered PWS When the message is received, it is determined that the base station is a pseudo base station.

It should be noted that the division of the modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. The functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist separately physically, or two or more modules may be integrated into one module. The above integrated modules may be implemented in the form of hardware or software functional modules.

If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium. , Including a number of instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor to perform all or part of the steps of the methods of the embodiments of the present application. The aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

It should also be noted that the pseudo base station identification device 700 can be used to execute the method provided by the embodiment corresponding to FIG. 2, FIG. 3, or FIG. 4. Therefore, implementation methods and technologies not described in detail in the pseudo base station identification device 700 shown in FIG. 7. For the effect, refer to the related description in the method shown in FIG. 2, FIG. 3, or FIG. 4.

Based on the same concept, an embodiment of the present application further provides a pseudo base station identification device, which is applied to user equipment. The pseudo base station identification device is configured to perform the pseudo base station identification method shown in FIG. 2, FIG. 3, or FIG. 4. The same device as the pseudo base station identification device 700 shown in FIG. 7.

FIG. 8 exemplarily shows a schematic structural diagram of a pseudo base station identification device provided in the present application. As shown in FIG. 8, the pseudo base station identification device 800 includes a processor, a memory, a control circuit, and an antenna. The processor is mainly used to process the communication protocol and communication data, and control the entire pseudo base station identification device 800, execute a software program, and process the data of the software program, for example, to support the pseudo base station identification device 800 to execute FIGS. 2 and 3 Or the pseudo base station identification method shown in FIG. 4. The memory is mainly used for storing software programs and data. The control circuit is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.

After the user equipment is powered on, the processor can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program. When the data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. After the radio frequency circuit processes the baseband signal, the radio frequency signal is sent out in the form of electromagnetic waves through the antenna. When data is sent to the pseudo base station identification device 800, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For processing.

Those skilled in the art can understand that, for ease of description, FIG. 8 shows only one memory and a processor. In the actual pseudo base station identification apparatus 800, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, which is not limited in this application.

As an optional implementation manner, the processor may include a baseband processor and a central processor. The baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to perform the entire pseudo base station identification device 800. Control, execute software programs, and process software program data. The processor in FIG. 8 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, which are interconnected through technologies such as a bus. Those skilled in the art can understand that the pseudo base station identification device 800 may include multiple baseband processors to adapt to different network standards. The pseudo base station identification device 800 may include multiple central processors to enhance its processing capabilities. The various components can be connected via various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data may be built in the processor or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

In the embodiment of the present application, the antenna and the control circuit having a transmitting and receiving function may be regarded as the transmitting and receiving unit of the pseudo base station identification device 800, and the processor having the processing function may be regarded as the processing unit of the pseudo base station identification device 800. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like. Optionally, a device for implementing a receiving function in the transceiver unit may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit may be regarded as a transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit. Exemplarily, the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc., and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit.

On the downlink, a downlink signal (including data and / or control information) sent by a network device (such as a base station) is received through an antenna, and on the uplink, an uplink is sent to a network device (such as a base station) through an antenna Signals (including data and / or control information) are processed in the processor by service data and signaling messages. These units are based on the radio access technology (e.g., LTE, NR, and other evolved systems) used by the radio access network. Access technology). The processor is further configured to control and manage the actions of the pseudo base station identification device 800, and to execute the processing performed by the pseudo base station identification device 800 in the foregoing embodiment. The processor is further configured to support the pseudo base station identification apparatus 800 to execute the execution method related to the user equipment in FIG. 2, FIG. 3, or FIG. 4.

It can be understood that FIG. 8 only shows a simplified design of the pseudo base station identification device 800. In practical applications, the pseudo base station identification device 800 may include any number of antennas, memories, processors, and the like, and all pseudo base station identification devices 800 that can implement the present application are within the protection scope of the present application.

Specifically, in this application, taking the transceiver unit as a transceiver and the processing unit as a processor as an example, when the pseudo base station identification device 800 executes the pseudo base station identification method shown in FIG. 2, the transceiver is configured to receive the current resident The paging message sent by the base station to which the first cell belongs, the paging message is used to instruct the user equipment to receive the PWS message of the public early warning system. The processor is used to determine the message type of the PWS message and the operator support to provide services for the user equipment When the types of PWS messages are inconsistent, it is determined that the base station is a pseudo base station.

Specifically, in this application, taking the transceiver unit as a transceiver and the processing unit as a processor as an example, when the pseudo base station identification device 800 executes the pseudo base station identification method shown in FIG. 3, the transceiver is configured to receive the current camping. A PWS message sent by a base station to which the first cell belongs; a processor, configured to determine that the base station is a pseudo base station when determining that the content of the PWS message is spam.

Specifically, in this application, taking the transceiver unit as a transceiver and the processing unit as a processor as an example, when the pseudo base station identification device 800 executes the pseudo base station identification method shown in FIG. 4, the transceiver is configured to receive the current resident The PWS message sent by the base station to which the first cell belongs; the processor is used to communicate with the alarm server through the transceiver when the user equipment is in a connected state, the alarm server is an application server that provides public warning services; the processor is also used to When the query of the alarm server does not trigger the PWS message update or the query that the PWS message is a tampered PWS message, it is determined that the base station is a pseudo base station.

The processor may also implement any detailed functions of the user equipment in the method embodiments shown in FIG. 2, FIG. 3, or FIG. 4, which are not described in detail here, and may refer to the methods shown in FIG. 2, FIG. 3, or FIG. 4 described above. The processing steps performed by the user equipment in the embodiment.

It should be noted that the pseudo base station identification device shown in FIG. 7 to FIG. 8 may be regarded as an integrated chip in user equipment, and may also be regarded as user equipment.

Specifically, the user equipment includes, but is not limited to, a smart phone, a smart watch, a tablet computer, a VR device, an AR device, a personal computer, a handheld computer, and a personal digital assistant.

Those skilled in the art should understand that the embodiments of the present application may be provided as a method, a system, or a computer program product. Therefore, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

This application is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, so that the instructions generated by the processor of the computer or other programmable data processing device are used to generate instructions Means for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a particular manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions The device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. In this way, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and variations.

Claims

A method for identifying a pseudo base station, comprising:

Receiving, by a user equipment, a paging message sent by a base station to which a first cell currently camping belongs, where the paging message is used to instruct the user equipment to receive a public early warning system PWS message;

Determining, by the user equipment, whether a message type of the PWS message is consistent with a PWS message type supported by an operator providing services for the user equipment;

When the message type of the PWS message is inconsistent with the PWS message type supported by the operator, the user equipment determines that the base station is a pseudo base station.
The method according to claim 1, wherein a message type of the PWS message is used to indicate a system message block carrying the PWS message.
The method according to claim 1 or 2, wherein after the user equipment determines whether a message type of the PWS message is consistent with a PWS message type supported by the operator, further comprising:

When the message type of the PWS message is consistent with the PWS message type supported by the operator, the user equipment identifies the content of the PWS message;

When the content of the PWS message is spam, the user equipment determines that the base station is a pseudo base station.
The method according to any one of claims 1 to 3, wherein after the user equipment determines whether a message type of the PWS message is consistent with a PWS message type supported by the operator, further comprising:

When the message type of the PWS message is consistent with the PWS message type supported by the operator, when the user equipment is in a connected state, the user equipment communicates with an alarm server, and the alarm server provides Application server for public warning services;

The user equipment determines that the base station is a pseudo base station in the case that the alarm server does not trigger a PWS message update or the PWS message is a tampered PWS message.
The method according to any one of claims 1 to 4, before the user equipment determines whether a message type of the PWS message is consistent with a PWS message type supported by the operator, further comprising:

Determining, by the user equipment, a PWS message type supported by the operator according to the configuration information of the first cell and a message type configuration list, where the message type configuration list is used to indicate at least one operator and PWS messages supported by the operator Correspondence of message types;

Obtaining, by the user equipment, a message type of the PWS message.
The method according to any one of claims 1 to 5, after the user equipment determines that the base station is a pseudo base station, further comprising:

Adding, by the user equipment, the cell information of the first cell to a prohibited camping list, where the prohibited camping list is used to instruct the user equipment to prohibit camping on the cell information corresponding to the cell information recorded in the prohibited camping list Plot.
The method according to claim 6, wherein after the user equipment adds the cell information of the first cell to a forbidden camp list, further comprising:

The user equipment performs a cell search under the current standard;

If the user equipment searches for an available cell under the current system, it camps on the second cell according to the cell search result, and the cell information of the second cell is not recorded in the forbidden camping list.
The method according to claim 7, further comprising: after the user equipment performs a cell search under a current standard, further comprising:

If the user equipment does not search for an available cell under the current system, switching to a system other than the current system for cell search; or,

If the user equipment does not search for an available cell under the current system, the cell information of the first cell is deleted from the forbidden camp list, and the first cell is camped again.
The method according to any one of claims 5 to 8, further comprising:

Updating, by the user equipment, the message type configuration list.
The method according to claim 9, wherein the user equipment updates the message type configuration list in at least one of the following ways:

Updating, by the user equipment, the message type configuration list according to an instruction of the base station;

Updating, by the user equipment, the message type configuration list by querying an alarm server, which is an application server providing a public early warning service;

Updating, by the user equipment, the message type configuration list through a software upgrade process of the user equipment;

The user equipment updates the message type configuration list through a software upgrade process of a user identification SIM card in the user equipment.
The method according to any one of claims 1 to 10, wherein a message type of the PWS message is any one of the following:

Commercial mobile early warning system CMAS;

Earthquake and Tsunami Warning System ETWS;

European Public Alert System EU-Alert;

Korean public early warning system KPAS;

Disaster and emergency warning network DEWN.
The method according to any one of claims 5 to 11, wherein the configuration information of the first cell includes at least one of the following:

The public land mobile network PLMN identity of the first cell;

The tracking area code TAC of the first cell;

A cell identification code CellID of the first cell;

Location information of the first cell.
The method according to any one of claims 6 to 12, wherein the cell information of the first cell includes at least one of the following:

A cell frequency of the first cell;

A cell frequency band of the first cell;

The physical cell identifier PCI of the first cell;

The E-UTRA absolute radio frequency channel number of the first cell is EARFCN.
The method according to any one of claims 1 to 13, after the user equipment determines that the base station is a pseudo base station, further comprising:

The user equipment prompts the user of the user equipment that the user equipment currently resides in a pseudo base station cell.
A pseudo base station identification device, comprising a processor, the processor is coupled to a memory, and reads instructions in the memory, for performing the method according to any one of claims 1 to 14.
The device according to claim 15, wherein the device is a user equipment or the device is a chip.
A computer storage medium, characterized in that a program is stored on the computer storage medium, and when the program is executed by a processor, it is used to implement the method according to any one of claims 1 to 14.
A computer program product, characterized in that when the program code contained in the computer program product runs on a computer, the computer causes the computer to execute the method according to any one of claims 1 to 14.