WO2017185873A1 - Pseudo base station identification method and device, terminal, and storage medium - Google Patents

Abstract

Disclosed are a pseudo base station identification method and device, a terminal, and a storage medium. The method comprises: obtaining preset characteristic parameters of a target cell base station; respectively comparing the obtained preset characteristic parameters with corresponding preset thresholds to obtain respective characteristic values; accumulating the characteristic values, and comparing the accumulated characteristic values with a preset determination threshold to determine whether the target cell base station is a pseudo base station. The present invention achieves the following beneficial effects: by setting different characteristic values for different preset parameters and carrying out accumulation and comparison, a pseudo base station can be identified more accurately, so that a terminal will not camp on the pseudo base station, thereby preventing a user from being harmed by a pseudo base station and improving safety of a terminal which accesses a network for communications.

Description

Pseudo base station identification method, device and terminal, storage medium Technical field

The present invention relates to communications technologies, and in particular, to a pseudo base station identification method, apparatus, terminal, and storage medium.

Background technique

A pseudo base station is a fake base station, which can enable a user terminal to access by emulating a legal base station. The pseudo base station can push information to the user through various methods such as short message, telephone, and Internet access, which not only causes interference to the user, but also harms the security and privacy of the user, and greatly depletes the public spectrum resources.

Once the user terminal resides in the pseudo base station, it will not be able to connect to the public telecommunication network, which will affect the normal use of the user terminal.

However, there is currently no method for better identifying a pseudo base station.

Summary of the invention

A technical problem to be solved by the embodiments of the present invention is to provide a pseudo base station identification method, apparatus, terminal, and storage medium for the above-mentioned defects of the related art.

The technical solution adopted by the embodiment of the present invention to solve the technical problem thereof is:

In a first aspect, an embodiment of the present invention provides a pseudo base station identification method, including:

Obtaining preset feature parameters of the target cell base station;

Comparing the acquired preset feature parameters with their corresponding preset thresholds to obtain respective feature values;

The feature values are accumulated, and the accumulated feature values are compared with a preset decision threshold to determine whether the target cell base station is a pseudo base station.

In an embodiment, the preset feature parameter includes at least two of the following parameters: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, and a periodic location update. Timer, the number of LAC changes in the preset time.

In an embodiment, the corresponding preset threshold value with the preset feature parameter may be dynamically adjusted.

In an embodiment, when the terminal performs registration, the preset feature parameters of the target cell base station are acquired.

In an embodiment, when the terminal performs cell reselection, the preset feature parameters of the target cell base station are acquired.

In an embodiment, when the value of the periodic location update timer sent by the base station is received, it is compared with the first threshold, if the value of the periodic location update timer sent by the base station is less than or equal to the first For the threshold, the eigenvalue I1 corresponding to the periodic location update timer is assigned to T1; if the value of the periodic location update timer is greater than the first threshold, the eigenvalue I1 corresponding to the periodic location update timer is assigned to H1.

In an embodiment, the number of changes of the base station LAC is monitored within a preset time. If the number of changes of the LAC of the base station is greater than or equal to the second threshold, the feature value I2 corresponding to the number of changes of the LAC in the preset time is T2; If the number of changes is less than the second threshold, the feature value I2 corresponding to the number of changes of the LAC in the preset time is assigned to H2.

In an embodiment, if the common control channel configuration parameter is the same as the third threshold, the eigenvalue I3 corresponding to the common control channel configuration parameter is assigned to T3; if the common control channel configuration parameter is different from the third threshold, the common control channel The feature value I3 corresponding to the configuration parameter is assigned to H3.

In an embodiment, if it is detected that the number of access grant reserved blocks of the base station is configured as a fourth threshold, the feature value I4 corresponding to the number of access grant reserved blocks is assigned to T4; if the access grant reserves the number of blocks and the fourth If the thresholds are different, the feature value I4 corresponding to the number of access grant reserved blocks is assigned to H4.

In one embodiment, if the minimum received signal level is less than or equal to the fifth threshold, the minimum received signal level corresponding to the feature value I5 is assigned to T5; if the minimum received signal level is greater than the fifth threshold, the minimum received signal The feature value I5 corresponding to the level is assigned to H5.

In an embodiment, if the cell reselection offset is greater than or equal to the sixth threshold, the feature value I6 corresponding to the cell reselection offset is assigned to T6; if the cell reselection offset is less than the sixth threshold, the cell is reselected The feature value I6 corresponding to the offset is assigned to H6.

In a second aspect, an embodiment of the present invention provides a pseudo base station identification apparatus, including:

Obtaining a module, configured to acquire preset feature parameters of the target cell base station;

The comparison module is configured to compare the acquired preset feature parameters with their corresponding preset thresholds to obtain respective feature values;

The decision module is configured to accumulate the feature values and compare the accumulated feature values with a preset decision threshold to determine whether the target cell base station is a pseudo base station.

In an embodiment, the preset feature parameter includes at least two of the following parameters: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, and a periodic location update. Timer, the number of LAC changes in the preset time.

In one embodiment, the corresponding preset threshold with the preset feature parameter supports dynamic adjustment.

In an embodiment, the acquiring module is further configured to acquire a preset feature parameter of the target cell base station when the terminal registers.

In an embodiment, the acquiring module is further configured to acquire a preset feature parameter of the target cell base station when the terminal performs cell reselection.

In an embodiment, the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:

When the value of the periodic location update timer sent by the base station is received, it is compared with the first threshold, and if the value of the periodic location update timer sent by the base station is less than or equal to the first threshold, the periodic location The feature value I1 corresponding to the update timer is assigned to T1; if the value of the periodic location update timer is greater than the first threshold, the feature value I1 corresponding to the periodic location update timer is assigned to H1.

In an embodiment, the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:

The number of changes of the base station LAC in the preset time period is monitored. If the number of changes of the LAC of the base station is greater than or equal to the second threshold, the feature value I2 corresponding to the number of changes of the LAC in the preset time is T2; if the number of changes is less than the second For the threshold, the feature value I2 corresponding to the number of changes of the LAC in the preset time is assigned to H2.

In an embodiment, the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:

If the common control channel configuration parameter is the same as the third threshold, the eigenvalue I3 corresponding to the common control channel configuration parameter is assigned to T3; if the common control channel configuration parameter is different from the third threshold, the eigenvalue corresponding to the common control channel configuration parameter I3 is assigned the value H3.

In an embodiment, the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:

If it is detected that the number of access grant reserved blocks of the base station is configured as a fourth threshold, the eigenvalue I4 corresponding to the number of access grant reserved blocks is assigned to T4; if the number of reserved access reserved blocks is different from the fourth threshold, then The feature value I4 corresponding to the number of permitted reserved blocks is assigned to H4.

In an embodiment, the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:

If the minimum received signal level is less than or equal to the fifth threshold, then the minimum received signal level corresponds to The characteristic value I5 is assigned to T5; if the minimum received signal level is greater than the fifth threshold, the characteristic value I5 corresponding to the minimum received signal level is assigned to H5.

In an embodiment, the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:

If the cell reselection offset is greater than or equal to the sixth threshold, the eigenvalue I6 corresponding to the cell reselection offset is assigned to T6; if the cell reselection offset is less than the sixth threshold, the eigenvalue corresponding to the cell reselection offset I6 is assigned the value H6.

Wherein, the above T1, T2, T3, T4, T5, and T6 are integers greater than 0; and the default values of H1, H2, H3, H4, H5, and H6 are 0.

In a third aspect, an embodiment of the present invention provides a pseudo base station identification method, including:

Acquiring at least two preset feature parameters of the target cell base station to be registered or reselected by the system broadcast message;

Comparing the acquired preset feature parameters with their preset thresholds to obtain respective feature values;

Accumulating the feature values to obtain the accumulated feature values;

If the accumulated feature value is greater than or equal to a preset decision threshold, determining that the target cell base station is a pseudo base station;

If the accumulated feature value is less than the preset decision threshold, it is determined that the target cell base station is a legal cell base station.

In an embodiment, the preset feature parameters include: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, a periodic location update timer, and a preset time. The number of changes to the LAC.

In one embodiment, the comparing the acquired preset feature parameters with their preset thresholds to obtain respective feature values, including:

If the periodic location update timer is less than or equal to 3, the feature value I1 of the periodic location update timer is T1; otherwise, the feature value is H1;

If the number of changes of the LAC in the preset time period is less than or equal to 3, the eigenvalue I2 is T2, otherwise, the characteristic value is H2;

If the common control channel configuration parameter is 1, the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue I3 is H3.

If the number of access grant reserved blocks is equal to or greater than 2, the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.

If the minimum received signal level is less than or equal to 5, the characteristic value I5 of the minimum received signal level is T5, and otherwise, the characteristic value I5 is H5.

If the cell reselection offset is greater than or equal to 60, the feature value I6 of the cell reselection offset is T6, otherwise, the feature value is H6.

Wherein, the above T1, T2, T3, T4, T5, and T6 are integers greater than 0; and the default values of H1, H2, H3, H4, H5, and H6 are 0.

In a fourth aspect, an embodiment of the present invention provides a terminal, including:

An acquiring module, configured to acquire, by using a system broadcast message, at least two preset feature parameters of a target cell base station to be registered or reselected;

The comparison module is configured to compare the acquired preset feature parameters with their preset thresholds to obtain respective feature values;

a decision module, configured to accumulate feature values to obtain an accumulated feature value; if the accumulated feature value is greater than or equal to a preset decision threshold, determining that the target cell base station is a pseudo base station; if the accumulated feature value is less than a preset decision threshold, Then, it is determined that the target cell base station is a legal cell base station.

In an embodiment, the preset feature parameters include: common control channel configuration parameters, access The number of reserved blocks, the minimum received signal level, the cell reselection offset, the periodic location update timer, and the number of changes of the location area code LAC in the preset time period are permitted.

In an embodiment, the comparing module is further configured to:

If the periodic location update timer is less than or equal to 3, the feature value of the periodic location update timer is T1; otherwise, the feature value of the periodic location update timer is H1;

If the number of changes of the LAC in the preset time period is less than or equal to 3 when the number of LAC changes of the fixed frequency point of the cell within the preset time is greater than or equal to 3, the characteristic value of the number of changes of the LAC in the preset time is T2; otherwise, the preset is The characteristic value of the number of changes of the LAC in the time is H2;

If the common control channel configuration parameter is 1, the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue of the common control channel configuration parameter is H3.

If the number of access grant reserved blocks is equal to or greater than 2, the feature value of the access grant reserved block number is T4; otherwise, the feature value of the access grant reserved block number is H4.

If the minimum received signal level is less than or equal to 5, the characteristic value of the minimum received signal level is T5, otherwise, the characteristic value of the minimum received signal level is H5.

If the cell reselection offset is greater than or equal to 60, the eigenvalue of the cell reselection offset is T6; otherwise, the eigenvalue of the cell reselection offset is H6.

Where T1, T2, T3, T4, T5, and T6 are integers greater than 0; the default values of H1, H2, H3, H4, H5, and H6 are 0.

In a fifth aspect, an embodiment of the present invention provides a terminal, including:

Processor and transceiver;

The memory is configured to acquire, by using a system broadcast message received by the transceiver, at least two preset feature parameters of a target cell base station to be registered or reselected; and comparing the acquired preset feature parameters with a preset threshold, respectively To obtain the respective eigenvalues; accumulate the eigenvalues to obtain the accumulated traits Value

If the accumulated feature value is greater than or equal to the preset decision threshold, determining that the target cell base station is a pseudo base station; if the accumulated feature value is less than a preset decision threshold, determining that the target cell base station is a legal cell base station.

In an embodiment, the preset feature parameters include: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, a periodic location update timer, and a preset time. The number of changes to the LAC.

In one embodiment, the processor is further configured to:

If the periodic location update timer is less than or equal to 3, the feature value I1 of the periodic location update timer is T1; otherwise, the feature value is H1;

If the number of changes of the LAC in the preset time period is less than or equal to 3, the eigenvalue I2 is T2, otherwise, the characteristic value is H2;

If the common control channel configuration parameter is 1, the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue I3 is H3.

If the number of access grant reserved blocks is equal to or greater than 2, the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.

If the minimum received signal level is less than or equal to 5, the characteristic value I5 of the minimum received signal level is T5, and otherwise, the characteristic value I5 is H5.

If the cell reselection offset is greater than or equal to 60, the feature value I6 of the cell reselection offset is T6, otherwise, the feature value is H6.

In a sixth aspect, an embodiment of the present invention provides a storage medium, where executable instructions are stored for performing a pseudo base station identification method provided by an embodiment of the present invention.

The pseudo base station identification method, device, terminal, and storage medium provided by the embodiments of the present invention have the following The utility model has the advantages that the pseudo base station can be accurately identified, so that the terminal does not reside in the pseudo base station, thereby avoiding the harm of the user suffering from the pseudo base station and improving the security of the terminal used in the state of accessing the network for communication.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic diagram showing the hardware structure of a terminal according to an embodiment of the present invention;

2 is a schematic flow chart of a method for identifying a pseudo base station according to an embodiment of the present invention;

3 is a schematic flowchart of a pseudo base station identification method according to another embodiment of the present invention;

4 is a schematic diagram of a terminal boot registration process according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of terminal cell reselection according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a pseudo base station identification apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a communication system according to an embodiment of the present invention.

detailed description

For a better understanding of the technical features, objects and effects of the present invention, the embodiments of the present invention are described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of hardware of a terminal according to an embodiment of the present invention. The terminal 100 of the embodiment of the present invention includes an antenna 101, a transceiver 102, a processor 103, a digital signal processing chip 104, a codec 105, an earpiece 106, and a microphone 107.

Digital signal processing chip 104 includes suitable hardware, logic, circuitry, and/or code for audio signal processing, such as echo signal suppression, noise suppression, etc. during audio processing.

Codec 105 includes appropriate hardware, logic, circuitry, and/or code for use with For A/D and D/A conversion.

Handset 106 includes suitable hardware, logic, circuitry, and/or code for outputting sound signals.

Microphone 107 includes suitable hardware, logic, circuitry, and/or code for acquiring voice signals.

The transceiver 102 is responsible for modulating the signal from the processor 103 into the radio frequency band and transmitting it by the antenna 101 after being processed by power amplification or the like. The transceiver 102 is also responsible for transmitting the signal received by the antenna 101 to the processor 103 after low power noise amplification, mixing, and the like.

The processor 103 is configured to perform baseband processing functions of the physical layer of the communication protocol stack, including digital joint detection, modulation/demodulation, channel coding/decoding, etc., as well as for processing complex logical operations and performing task assignment to provide interaction for users. Interface, the operating system of the terminal, etc. Further, the terminal 100 further includes a memory, a power supply unit, a positioning unit, a display unit, and the like for performing respective functions.

The base station 200 may specifically refer to a device in the access network that communicates with the terminal 100 through one or more sectors on an air interface. The base station can be configured to convert the received air frame to an Internet Protocol (IP) packet for interworking between the terminal and the rest of the access network, wherein the remainder of the access network can include an IP network. The base station can also coordinate attribute management of the air interface.

The cell base station can continuously transmit broadcast messages. The terminal 100 receives the broadcast message in time or receives the broadcast message when needed (for example, periodically receiving or receiving it when performing cell search). The terminal 100 may discover the cell base station according to the received broadcast message, and may determine whether to access the cell base station by selecting. A terminal may receive broadcast messages sent by multiple cell base stations, and may select a suitable cell, such as a cell base station with better signal quality, to reside in the cell base station.

Based on the above-mentioned terminal hardware structure, various embodiments of the pseudo base station identification method and apparatus of the present invention are proposed.

As shown in FIG. 2, a pseudo base station identification method according to an embodiment of the present invention includes:

S21. Obtain a preset feature parameter of the target cell base station.

In an embodiment of the present invention, the preset feature parameter includes at least one of the following: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, and a periodic location update timing. The number of changes to the location area code (LAC) in the preset time.

The terminal may obtain the preset feature parameters described above from the broadcast message.

In an embodiment of the present invention, the control channel description parameters carried in the broadcast message from the base station may include a common control channel configuration parameter, an access grant reserved block number parameter, an LAC, a periodic location update timer, and the like. The cell selection parameters carried in the broadcast message may include a minimum received signal level, a cell reselection offset parameter, and the like.

These parameters can be included in the broadcast message sent, whether it is the base station provided by the operator or the pseudo base station.

S22. Compare the acquired preset feature parameters with their corresponding preset thresholds to obtain respective feature values.

For example, for the periodic location update timer, after setting the periodic location update timer, the base station broadcasts the broadcast control channel (BCCH, Broadcast Control Channel) to the terminal. The terminal updates the timer according to the periodic location, and the timeout triggers the location update request. For a normal base station, if the value of the periodic location update timer is too small, the signaling load of the cell is too large, and the power consumption of the terminal is greatly increased. For a pseudo base station, the smaller the periodic location update timer is configured, the more favorable the pseudo base station is to kick out the terminal that has received the short message in time, so that more inhalation is not received. To the terminal of the text message. Therefore, the pseudo base station sets the periodic location update timer to be small, for example, sets the periodic location update timer to 1 (corresponding to 6 minutes).

Therefore, in an embodiment of the present invention, a first threshold may be set, and when received by the base station, When the value of the periodic location update timer is compared with the first threshold, if the value of the periodic location update timer (TS3212) delivered by the base station is less than or equal to the first threshold, it is determined that the base station is a pseudo base station. The eigenvalue I1 is assigned to T1; if the value of the periodic location update timer (TS3212) is greater than the first threshold, the base station is the eigenvalue I1 of the pseudo base station assigned to H1. In a preferred embodiment, the first threshold may be set to 3 (corresponding to 18 minutes) to determine the probability that the currently accessed base station is a pseudo base station.

For the LAC, when the terminal detects a base station with a strong signal strength, and the LAC stored by the terminal is different from the LAC broadcast by the base station, a location update procedure is initiated to access the base station with the strong signal strength. Usually, a location area is covered with dozens or even hundreds of base stations, so generally dozens of cells share the same LAC. Due to the reason that the carrier network prevents the same-frequency interference, it is impossible to be on a frequency point, and the base station LAC changes frequently in a short time. Therefore, a second threshold may be set to monitor the number of changes of the base station LAC in a preset time. If the number of changes of the base station LAC is greater than or equal to the second threshold, the base station is the eigenvalue I2 of the pseudo base station and is assigned to T2; If the number of changes is less than the second threshold, the base station is the pseudo base station whose feature value I2 is assigned to H2. In a preferred embodiment, the preset time may be set to 6 minutes, 20 minutes, etc., and the second threshold may be set to 2 or 3.

For the Common Control Channel Configuration Parameter (CCCH_CONF), which is included in the information element "Control Channel Description", it is transmitted in the system message broadcast by each base station. Its main function is to send a grant access message and a paging message. The configuration of this parameter is generally configured according to the traffic model during cell planning. Generally, for the case where the number of carrier frequencies (TRX, transceiver units) in the cell is one or two, the configuration of the common control channel adopts one basic physical channel and is shared with the SDCCH, and the common control channel configuration parameter takes a value of 001; In the case where the number of TRXs in the cell is three or four, the configuration of the common control channel adopts one basic physical channel and is not shared with the dedicated control channel (Stand-Alone Dedicated Control Channel), and the common control channel configuration parameter takes the value of 000. For TRX in the cell In the case of more than four, a plurality of Common Control Channel (CCCH) physical channels can be used.

When the CCCH channel uses one physical channel and is shared with the SDCCH, the channel capacity of the CCCH is the smallest; when the CCCH uses one physical channel and is not shared with the SDCCH, the channel capacity of the CCCH is second; in other cases, the more physical channels used by the CCCH The greater its capacity.

In general, the carrier cell has a large number of carrier frequencies (TRX) in order to provide more user services. Therefore, few base stations set the value of the common control channel configuration parameter (CCCH_CONF) to 001 unless there is Enough hardware support. For a pseudo base station, it is not necessary to support multiple physical channels or support a large number of carrier frequencies at the same time. According to the service characteristics of the pseudo base station, supporting one frequency point pair at the same time can already meet the service requirement, if multiple frequency points are supported at the same time. For a pseudo base station, frequent reselection of the terminal may be of no benefit to the service characteristics of the pseudo base station. Secondly, the pseudo base station is in consideration of cost saving, and the value of the common control channel configuration parameter CCCH_CONF is also set to 001. Therefore, a third threshold may be set. If the common control channel configuration parameter is the same as the third threshold, it is determined that the base station is a pseudo base station whose feature value I3 is assigned to T3; if the common control channel configuration parameter is different from the third threshold, Then, it is determined that the base station is a pseudo base station whose feature value I3 is assigned to H3. In one embodiment, the third threshold can be set to one.

For the access grant reserved block number, it is used to indicate the number of message blocks reserved for the AGCH on the CCCH channel in each BCCH multiframe, and the value range is: if the CCCH and the SDCCH do not share the physical channel, the value is 0~ 7. If the physical channel is shared by the CCCH and the SDCCH, the value is 0 to 2.

The principle of the value of the number of access grant reserved blocks is: in the case of ensuring that the AGCH channel is not overloaded, the parameter should be reduced as much as possible to shorten the time for the mobile station to respond to the paging and improve the service performance of the system. Therefore, the general value of the number of access grant reserved blocks is 1 (CCCH shares one physical channel with SDCCH), 2 or 3 (other CCCH combinations).

Therefore, a fourth threshold may be set. If it is detected that the number of access grant reserved blocks of the base station is configured as a fourth threshold, the base station is a pseudo base station whose feature value I4 is assigned to T4; if the access grant reserves the number of blocks and If the fourth threshold is different, the base station is the pseudo base station and the feature value I4 is assigned to H4. Since the pseudo base station generally adopts a scheme in which the CCCH and the SDCCH share one physical channel, and the pseudo base station generally sets the value of the access grant reserved block number to 2 in order to make more users camp, in a preferred embodiment, The fourth threshold can be set to 2.

For the minimum received signal level, it is related to the calculation of the cell selection parameter C1, and generally the value of the minimum received signal level is close to the receiving sensitivity of the terminal. The smaller the value of the minimum received signal level, the lower the access threshold of the cell, which means that there will be more terminal access, which will also cause the cell traffic to be overloaded (normal cell service has voice, SMS, data, signaling, etc.). However, for a pseudo base station, the value of the minimum received signal level is set to be low in order to allow more users to access. Therefore, a fifth threshold may be set. If the minimum received signal level is less than or equal to the fifth threshold, the base station is the eigenvalue I5 of the pseudo base station and is assigned to T5; if the minimum received signal level is greater than the fifth threshold, then The base station is a pseudo base station whose characteristic value I5 is assigned to H5. In a preferred embodiment, the fifth threshold can be set to five.

For the cell reselection offset, when the penalty time parameter (penalty_time, pt) is not equal to 31, the cell reselection parameter = cell selection parameter + cell reselection offset - cell reselection temporary offset * H (penalty time) -T). Where T is the timing of the counter. When a cell is counted in the neighboring cell by the terminal, T starts counting. When the cell is kicked out of the statistical six neighboring cells, T is reset and restored. The penalty time is a parameter [0, 31] seconds. H is a function, the meaning of the function is that when X>=0, H(X)=1, when X<0, H(X)=0. It can be seen that if the value of the cell reselection offset (CELL_RESELECT_OFFSET, CRO) is too high, the access priority of the cell is improved, and the terminal is easily reselected from other serving cells to the cell, and is no longer easy to switch. Back to other Community. Therefore, the normal cell configuration parameter is not configured too high, because too high a service load of the cell is too large, resulting in deterioration of service quality, and is also disadvantageous for service sharing of several cells in the area. Therefore, a sixth threshold may be set, and the cell reselection offset is compared with the sixth threshold. If the cell reselection offset is greater than or equal to the sixth threshold, the base station is a pseudo base station whose feature value I6 is assigned to T6. If the cell reselection offset is less than the sixth threshold, the base station is the pseudo base station whose feature value I6 is assigned to H6.

The value of the value of the cell reselection offset of the legal base station is generally 0-63. In one embodiment, the sixth threshold can be set to 60. In the embodiment of the present invention, I1 to I6 are the feature values corresponding to the respective preset feature parameters.

S23. Accumulate the feature values, and compare the accumulated feature values with a preset decision threshold to determine whether the target cell base station is a pseudo base station.

In an embodiment of the invention, at least two comparison results are selected for accumulation. At least two of the above I1, I2, I3, I4, I5, and I6 are accumulated, and the accumulated value is compared with a preset decision threshold. If the value is greater than or equal to the preset value, the base station is identified as a pseudo base station. Otherwise, the base station is identified as a legitimate base station. For example, if I1+I2+I3+I4+I5+I6+...+In>=J, the cell base station is determined to be a pseudo base station; if I1+I2+I3+I4+I5+I6+...+In<J, then The cell base station is determined to be a legal base station.

After being identified as a pseudo base station, the terminal may refuse to camp on the pseudo base station, that is, not initiate a location update registration or the like to the pseudo base station, so that the terminal does not camp on the pseudo base station.

In an embodiment of the invention, T1, T2, T3, T4, T5, and T6 are integers greater than 0; and default values of H1, H2, H3, H4, H5, and H6 are 0.

In some embodiments, the preset preset thresholds with the preset feature parameters can be dynamically adjusted, that is, T1 to T6 and H1 to H6 can be dynamically set. For example, if the base station is determined to be a legal base station according to the result of a certain preset feature parameter, one or more of the corresponding H1 to H6 may be set to a negative value, so that the final accumulated result is necessarily smaller than the preset. Decision threshold J; if the result is based on a certain preset feature If the base station is determined to be a pseudo base station, the value of one or more of the corresponding T1 to T6 may be set higher, so that the final accumulated result is necessarily greater than the preset decision threshold J.

In the pseudo base station identification method of the embodiment of the present invention, by setting different feature values for different preset parameters, and by accumulating comparison methods, the pseudo base station can be more accurately identified, so that the terminal does not reside in the pseudo base station, thereby The user is protected from the harm of the pseudo base station, and the security of the terminal in the state of accessing the network for communication is improved.

Referring to FIG. 3, in another embodiment of the present invention, a method for identifying a pseudo base station includes:

At step S30, at least two preset feature parameters of the target cell base station to be registered or reselected are acquired by the system broadcast message.

When the terminal performs registration or cell reselection, the terminal receives the broadcast message and extracts the preset feature parameters included in the broadcast message. In an embodiment of the present invention, the acquired preset feature parameter is at least two of the following six feature parameters: a common control channel configuration parameter (CCCH CONF), and an access grant reserved block number (BS-AG-BLKS-RES) ), minimum received signal level (RXLEV_ACCESS-MIN), cell reselection offset (CELL_RESELECT_OFFSET), periodic location update timer (TS3212), number of LAC changes in the preset time.

In step S31, the acquired preset feature parameters are respectively compared with their preset thresholds to obtain respective feature values.

In an embodiment of the present invention, each of the preset feature parameters is preset with a feature value that determines that the cell is a pseudo base station cell. According to the above description, in the embodiment of the present invention, the feature value is quantized into a fixed optimizable value, which may be represented by an integer value greater than 0, or may be expressed as a percentage representation of the probability.

For example, the feature values corresponding to each preset feature parameter can be set as follows:

In an embodiment of the invention, if the periodic location update timer TS3212 is less than or equal to 3, That is, when the time is less than 18 minutes (min), the characteristic value I1 of the periodic position update timer is T1; otherwise, the characteristic value is H1.

If the number of changes of the LAC in the preset time period is less than or equal to 3 when the cell-fixed frequency LAC change times within the preset time (20 min) is greater than or equal to 3, the feature value I2 is T2; otherwise, the feature value is H2.

If the common control channel configuration parameter CCCH CONF=1, the characteristic value I3 of the common control channel configuration parameter is T3, otherwise, the characteristic value I3 is H3.

If the access grant reserved block number BS-AG-BLKS-RES is equal to (or greater than) 2, the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.

If the minimum received signal level RXLEV_ACCESS-MIN is less than or equal to 5, the characteristic value I5 of the minimum received signal level is T5, otherwise, the characteristic value I5 is H5.

If the cell reselection offset CELL_RESELECT_OFFSET is greater than or equal to 60, the feature value I6 of the cell reselection offset is T6, otherwise, the feature value is H6.

In addition, other preset feature parameters may also be considered. When the corresponding condition is set, the feature value In is set to Tn, otherwise the feature value is set to Hn.

In an embodiment of the invention, T1, T2, T3, T4, T5, T6...Tn are integers greater than zero. The default value of H1, H2, H3, H4, H5, H6...Hn is 0.

In step S32, the feature values are accumulated to obtain the accumulated feature values.

In step S33, it is determined whether the accumulated feature value is greater than or equal to a preset decision threshold. If it is greater than or equal to, the target cell base station is determined to be a pseudo base station in step S34; and the base station frequency point or LAI is added in step S35. Forbidden the list; and in step S36, the candidate cell is selected from the candidate cell according to the protocol to register and obtain the service.

If it is determined in step S33 that the accumulated feature value is less than the preset decision threshold, then in step S37 It is determined that the target cell base station is a legal cell base station, and registration is performed to obtain a service.

In the embodiment of the present invention, a preset decision threshold J is set, and if I1+I2+I3+I4+I5+I6+...+In>=J, the cell base station is determined to be a pseudo base station; if I1+I2+ I3+I4+I5+I6+...+In<J, the cell base station is determined to be a legal cell base station.

In an embodiment of the present invention, if a large number of data is analyzed, according to the characteristics of the legal cell base station, a certain preset feature parameter of the legal cell base station must not be set to X. Therefore, if the preset feature parameter is set to X, it can be clearly determined that the cell base station is a pseudo base station, therefore, the corresponding value of the feature value (T1 ~ T6) of the preset feature parameter can be set higher, so that the final accumulated feature value will be It is greater than the preset decision threshold and is accurately determined as a pseudo base station.

Correspondingly, if based on a large amount of data analysis, according to the characteristics of the legal cell base station, if a certain preset feature parameter is set to Y, it can be clearly determined that the cell base station is a legal cell base station, and therefore, the corresponding pre- Let the characteristic values (H1~H6) of the feature parameters be set lower, for example, set to a negative number (for example, -10, etc.), so that the final accumulated feature value must be less than the preset decision threshold, and the exact decision value is determined. It is a legal cell base station.

In a preferred embodiment of the invention, T1 can be set to 2, T2 is set to 1, T3 is set to 2, T4 is set to 1, T5 is set to 1, and T6 is set to 1. Set H1 to 0, H2 to 0, H3 to 0, H4 to 0, H5 to 0, and H6 to 0. The preset decision threshold J is set to 3.

In the embodiment of the present invention, since two or more preset feature parameters may be selected, a plurality of preset decision thresholds may be set, respectively corresponding to the combination of the selected preset feature parameters. For example, when two preset feature parameters are selected, and the selected preset feature parameters are the common control channel configuration parameter (CCCH CONF) and the access grant reserved block number (BS-AG-BLKS-RES), I1 and I2 are selected. The accumulation is performed and the accumulated sum is compared with the preset decision threshold J1.

In the pseudo base station identification method of the embodiment of the present invention, by setting different feature values for different preset parameters, and by accumulating comparison methods, the pseudo base station can be more accurately identified, so that the terminal does not reside in the pseudo base station, thereby The user is protected from the harm of the pseudo base station, and the security of the terminal in the state of accessing the network for communication is improved.

Referring to FIG. 4, it is a schematic diagram of a terminal boot registration process according to an embodiment of the present invention.

When the terminal performs boot registration, the broadcast message sent by the cell base station is received, and the cell base station is sorted according to the signal quality of the cell base station, and the cell base station with the best signal quality is used as the target cell base station. Then, according to the pseudo base station identification method, it is determined whether the target cell base station is a pseudo base station. If the judgment result is that the target cell base station is a pseudo base station, the location update registration is not initiated, and the network search is performed again, and other cell base stations are selected for judgment. And/or registration; if the result of the determination is that the target cell base station is not a pseudo base station, a location update registration is initiated to camp on the target cell base station. Further, after the location update registration is initiated, if the registration fails, another cell base station is selected.

Referring to FIG. 5, in another embodiment of the present invention, if the terminal is originally registered in a certain cell base station, according to the neighboring cell measurement result and the reselection algorithm needs to be reselected to the new cell base station, according to the received broadcast message, Selecting a target cell base station, and determining whether the target cell base station is a pseudo base station according to the pseudo base station identification method: if the judgment result is that the target cell base station is a pseudo base station, re-searching the network, and selecting other cell base stations to perform judgment and/or Or register. If the result of the determination is that the target cell is not a pseudo base station, a reselection location update registration is performed to camp on the target cell base station.

Correspondingly, referring to FIG. 6, an embodiment of the present invention further provides a pseudo base station identification apparatus, including:

Obtaining a module, configured to acquire preset feature parameters of the target cell base station;

The comparison module is configured to compare the acquired preset feature parameters with their corresponding preset thresholds to obtain respective feature values;

a decision module configured to accumulate feature values and add the accumulated feature values to a predetermined decision threshold A comparison is made to determine if the target cell base station is a pseudo base station.

The preset feature parameter includes at least two of the following parameters: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, a periodic location update timer, and a preset time. The number of changes in the internal LAC.

For example, when the value of the periodic location update timer sent by the base station is received, it is compared with the first threshold, and if the value of the periodic location update timer sent by the base station is less than or equal to the first threshold, the period is The feature value I1 corresponding to the sexual location update timer is assigned to T1; if the value of the periodic location update timer is greater than the first threshold, the feature value I1 corresponding to the periodic location update timer is assigned to H1.

The number of changes of the base station LAC in the preset time period is monitored. If the number of changes of the LAC of the base station is greater than or equal to the second threshold, the feature value I2 corresponding to the number of changes of the LAC in the preset time is T2; if the number of changes is less than the second For the threshold, the feature value I2 corresponding to the number of changes of the LAC in the preset time is assigned to H2.

If the common control channel configuration parameter is the same as the third threshold, the eigenvalue I3 corresponding to the common control channel configuration parameter is assigned to T3; if the common control channel configuration parameter is different from the third threshold, the eigenvalue corresponding to the common control channel configuration parameter I3 is assigned the value H3.

If it is detected that the number of access grant reserved blocks of the base station is configured as a fourth threshold, the eigenvalue I4 corresponding to the number of access grant reserved blocks is assigned to T4; if the number of reserved access reserved blocks is different from the fourth threshold, then The feature value I4 corresponding to the number of permitted reserved blocks is assigned to H4.

If the minimum received signal level is less than or equal to the fifth threshold, the eigenvalue I5 corresponding to the minimum received signal level is assigned to T5; if the minimum received signal level is greater than the fifth threshold, the eigenvalue corresponding to the minimum received signal level I5 is assigned the value H5.

If the cell reselection offset is greater than or equal to the sixth threshold, the feature value I6 corresponding to the cell reselection offset The value is T6; if the cell reselection offset is less than the sixth threshold, the feature value I6 corresponding to the cell reselection offset is assigned to H6.

It should be understood that the manner in which the pseudo base station identifying apparatus of the embodiment of the present invention identifies the pseudo base station can be understood by referring to FIG. 1 to FIG. 5 and the corresponding descriptions above.

Correspondingly, the embodiment of the present invention further provides a terminal. FIG. 1 shows an optional hardware structure diagram of the terminal. The terminal at least includes the processor 103 and the transceiver 102 as shown in FIG.

According to FIG. 1, in actual applications, according to actual requirements for terminal functions, various input/output components, such as a microphone 106, an earpiece 107, etc., which can also be set in the terminal, implement basic voice through the digital decoding chip 104 and the codec. Features such as voice calls, recordings, etc.

The transceiver 102 is configured to receive, by using the antenna 101, a radio frequency signal that presents a system broadcast message;

The processor 103 is configured to obtain a system broadcast message from the radio frequency signal by using a baseband processing function of the physical layer of the line communication protocol stack, including digital joint detection, modulation/demodulation, channel coding/decoding, and the like;

Acquiring at least two preset feature parameters of the target cell base station to be registered or reselected by using the system broadcast message, and acquiring at least two preset feature parameters of the target cell base station to be registered or reselected by using the system broadcast message; The characteristic parameters are respectively compared with their preset thresholds to obtain respective feature values; the feature values are accumulated to obtain the accumulated feature values;

If the accumulated feature value is greater than or equal to the preset decision threshold, determining that the target cell base station is a pseudo base station; if the accumulated feature value is less than a preset decision threshold, determining that the target cell base station is a legal cell base station.

For example, the preset feature parameters include: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, a periodic location update timer, and a number of LAC changes in a preset time.

If the periodic location update timer is less than or equal to 3, the feature value I1 of the periodic location update timer is T1; otherwise, the feature value is H1;

If the number of changes of the LAC in the preset time period is less than or equal to 3, the eigenvalue I2 is T2, otherwise, the characteristic value is H2;

If the common control channel configuration parameter is 1, the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue I3 is H3.

If the number of access grant reserved blocks is equal to or greater than 2, the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.

If the minimum received signal level is less than or equal to 5, the characteristic value I5 of the minimum received signal level is T5, and otherwise, the characteristic value I5 is H5.

If the cell reselection offset is greater than or equal to 60, the feature value I6 of the cell reselection offset is T6, otherwise, the feature value is H6.

Where T1, T2, T3, T4, T5, and T6 are integers greater than 0; the default values of H1, H2, H3, H4, H5, and H6 are 0.

In addition, the implementation manner of identifying the pseudo base station in the terminal of the embodiment of the present invention can be understood by referring to FIG. 1 to FIG. 5 and the corresponding description.

The terminal provided by the embodiment of the present invention may be various types of terminals such as a folding type, a bar type, a swing type, a sliding type terminal, etc., for example, the terminal may be a mobile terminal such as a smart phone. A communication system in which a terminal is operable according to an embodiment of the present invention will now be described with reference to FIG.

Such communication systems may use different air interfaces and/or physical layers. For example, air interfaces used by communication systems include, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)). ), Global System for Mobile Communications (GSM), etc. As a non-limiting example, the following description relates to CDMA Communication systems, but such teachings are equally applicable to other types of systems.

Referring to FIG. 7, a CDMA wireless communication system may include a plurality of terminals 100, a plurality of base stations (BS) 270, a base station controller (BSC) 275, and a mobile switching center (MSC) 280. The MSC 280 is configured to interface with a public switched telephone network (PSTN) 290. The MSC 280 is also configured to interface with a BSC 275 that can be coupled to the base station 270 via a backhaul line. The backhaul line can be constructed in accordance with any of a number of well known interfaces including, for example, E1/T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. It will be appreciated that the system as shown in Figure 7 can include multiple BSC 2750s.

Each BS 270 can serve one or more partitions (or regions), each of which is covered by a multi-directional antenna or an antenna directed to a particular direction radially away from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS 270 can be configured to support multiple frequency allocations, and each frequency allocation has a particular frequency spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of partitioning and frequency allocation can be referred to as a CDMA channel. BS 270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology. In such a case, the term "base station" can be used to generally refer to a single BSC 275 and at least one BS 270. A base station can also be referred to as a "cell station." Alternatively, each partition of a particular BS 270 may be referred to as a plurality of cellular stations.

As shown in FIG. 7, a broadcast transmitter (BT) 295 transmits a broadcast signal to the terminal 100 operating within the system. A broadcast receiving module 111 as shown in FIG. 1 is provided at the terminal 100 to receive a broadcast signal transmitted by the BT 295. In Figure 7, several Global Positioning System (GPS) satellites 300 are shown. The satellite 300 helps locate at least one of the plurality of terminals 100.

In Figure 7, a plurality of satellites 300 are depicted, but it is understood that useful positioning information can be obtained using any number of satellites. The GPS module 115 as shown in Figure 1 is typically configured to cooperate with the satellite 300 to obtain desired positioning information. Alternative to GPS tracking technology or in addition to GPS tracking technology, Use other techniques that can track the location of the mobile terminal. Additionally, at least one GPS satellite 300 can selectively or additionally process satellite DMB transmissions.

As a typical operation of a wireless communication system, BS 270 receives reverse link signals from various terminals 100. Terminal 100 typically participates in calls, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within a particular BS 270. The obtained data is forwarded to the relevant BSC 275. The BSC provides call resource allocation and coordinated mobility management functions including a soft handoff procedure between the BSs 270. The BSC 275 also routes the received data to the MSC 280, which provides additional routing services for interfacing with the PSTN 290. Similarly, PSTN 290 interfaces with MSC 280, which forms an interface with BSC 275, and BSC 275 controls BS 270 accordingly to transmit forward link signals to terminal 100.

The embodiment of the present invention further provides a storage medium, which is stored with executable instructions, and is used to perform the pseudo base station identification method provided in any embodiment of the present invention in conjunction with any of the accompanying drawings of FIG. 2 to FIG. 5; A storage medium such as a hard disk or a disk, which is optional as a non-transitory storage medium. The storage medium may be various forms of non-volatile storage media such as a flash memory, an optical disk, a hard disk, and the like. The executable instructions may be stored in a storage medium in a centralized manner, or may be stored in a different storage medium in a distributed manner.

The pseudo base station identification method and device, the terminal, and the storage medium in the embodiment of the present invention can more accurately identify the pseudo base station by setting different feature values for different preset parameters, and by accumulating the comparison manner, so that the terminal does not It resides in the pseudo base station, thereby avoiding the user's suffering from the pseudo base station and improving the security of the terminal in the state of accessing the network for communication.

The terminal 100 in the embodiment of the present invention may also be referred to as a mobile device, a terminal, an access terminal, a subscriber unit, and the like. The terminal 100 can be a smart phone, a tablet computer, a laptop computer, or configured Other devices that communicate using wireless communication protocols such as 2G/3G/4G.

Any process or method description in the flowcharts or otherwise described in the embodiments of the invention may be understood to represent code that includes one or more executable instructions for implementing the steps of a particular logical function or process. Modules, segments or portions, and the scope of the embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an inverse order depending on the functions involved, in the order shown or discussed. This should be understood by those skilled in the art of the embodiments of the present invention.

The technology described in the embodiments of the present invention can be applied to various communication systems, such as a second generation mobile communication system (2G), a third generation mobile communication system (3G) or a fourth to-be-mobile communication system (4G), and the like. Also for example, Global System for Mobile Communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Partition Multiple Access (OFDMA) systems, Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems, General Packet Radio Service (GPRS) systems, Long Term Evolution (LTE) systems, and other similar communication systems. For purposes of explanation, the foregoing description has been used in a specific However, it will be apparent to those skilled in the art that <RTIgt; The foregoing description of the specific embodiments of the invention has been presented They are not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teachings. The embodiments are shown and described in order to best explain the principles of the invention and the embodiments of the invention Various embodiments. The scope of the invention is intended to be defined by the appended claims and their equivalents.

Claims (20)

1. A pseudo base station identification method includes:

   Obtaining preset feature parameters of the target cell base station;

   Comparing the acquired preset feature parameters with their corresponding preset thresholds to obtain respective feature values;

   The feature values are accumulated, and the accumulated feature values are compared with a preset decision threshold to determine whether the target cell base station is a pseudo base station.
2. The method of claim 1, wherein the preset feature parameter comprises at least two of the following parameters: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset The periodic location update timer and the number of times the location area code LAC is changed within a preset time.
3. The method of claim 2, wherein the corresponding preset threshold with the preset feature parameter supports dynamic adjustment.
4. The method according to any one of claims 1-3, wherein when the terminal performs registration, the preset feature parameters of the target cell base station are acquired.
5. The method according to any one of claims 1-3, wherein when the terminal performs cell reselection, the preset feature parameters of the target cell base station are acquired.
6. A pseudo base station identification device includes:

   Obtaining a module, configured to acquire preset feature parameters of the target cell base station;

   The comparison module is configured to compare the acquired preset feature parameters with their corresponding preset thresholds to obtain respective feature values;

   a decision module configured to accumulate feature values and add the accumulated feature values to a predetermined decision threshold A comparison is made to determine if the target cell base station is a pseudo base station.
7. The pseudo base station identifying apparatus according to claim 6, wherein

   The preset feature parameter includes at least two of the following parameters: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, a periodic location update timer, and a preset time. The number of changes to the internal location area code.
8. The pseudo base station identification apparatus according to claim 7, wherein the corresponding preset threshold value with the preset feature parameter supports dynamic adjustment.
9. A pseudo base station identifying apparatus according to any one of claims 6-8, wherein

   The acquiring module is further configured to acquire a preset feature parameter of the target cell base station when the terminal performs registration.
10. A pseudo base station identifying apparatus according to any one of claims 6-8, wherein

    The acquiring module is further configured to acquire a preset feature parameter of the target cell base station when the terminal performs cell reselection.
11. A pseudo base station identification method includes:

    Acquiring at least two preset feature parameters of the target cell base station to be registered or reselected by the system broadcast message;

    Comparing the acquired preset feature parameters with their preset thresholds to obtain respective feature values;

    Accumulating the feature values to obtain the accumulated feature values;

    If the accumulated feature value is greater than or equal to a preset decision threshold, determining that the target cell base station is a pseudo base station;

    If the accumulated feature value is less than the preset decision threshold, it is determined that the target cell base station is a legal cell base station.
12. The method of claim 11 wherein said predetermined feature parameters comprise: public The control channel configuration parameter, the access grant reserved block number, the minimum received signal level, the cell reselection offset, the periodic location update timer, and the number of times the location area code LAC is changed within a preset time.
13. The method according to claim 12, wherein the comparing the acquired preset feature parameters with their preset thresholds to obtain respective feature values comprises:

    If the periodic location update timer is less than or equal to 3, the feature value of the periodic location update timer is T1; otherwise, the feature value of the periodic location update timer is H1;

    If the number of changes of the LAC in the preset time period is less than or equal to 3 when the number of LAC changes of the fixed frequency point of the cell within the preset time is greater than or equal to 3, the characteristic value of the number of changes of the LAC in the preset time is T2; otherwise, the preset is The characteristic value of the number of changes of the LAC in the time is H2;

    If the common control channel configuration parameter is 1, the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue of the common control channel configuration parameter is H3;

    If the number of access grant reserved blocks is equal to or greater than 2, the eigenvalue of the number of access grant reserved blocks is T4; otherwise, the eigenvalue of the number of access grant reserved blocks is H4;

    If the minimum received signal level is less than or equal to 5, the characteristic value of the minimum received signal level is T5, otherwise, the characteristic value of the minimum received signal level is H5;

    If the cell reselection offset is greater than or equal to 60, the eigenvalue of the cell reselection offset is T6; otherwise, the eigenvalue of the cell reselection offset is H6;

    T1, T2, T3, T4, T5, and T6 are integers greater than 0; the default values of H1, H2, H3, H4, H5, and H6 are 0.
14. A terminal comprising:

    An acquiring module, configured to acquire, by using a system broadcast message, at least two preset feature parameters of a target cell base station to be registered or reselected;

    The comparison module is configured to compare the acquired preset feature parameters with their preset thresholds to obtain Have their own characteristic values;

    a decision module, configured to accumulate feature values to obtain an accumulated feature value; if the accumulated feature value is greater than or equal to a preset decision threshold, determining that the target cell base station is a pseudo base station; if the accumulated feature value is less than a preset decision threshold, Then, it is determined that the target cell base station is a legal cell base station.
15. The terminal according to claim 14, wherein the preset feature parameters include: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, and a periodic location update timer. And the number of times the location area code LAC is changed within the preset time.
16. The method of claim 14 wherein

    The comparison module is further configured to:

    If the periodic location update timer is less than or equal to 3, the feature value of the periodic location update timer is T1; otherwise, the feature value of the periodic location update timer is H1;

    If the number of changes of the LAC in the preset time period is less than or equal to 3 when the number of LAC changes of the fixed frequency point of the cell within the preset time is greater than or equal to 3, the characteristic value of the number of changes of the LAC in the preset time is T2; otherwise, the preset is The characteristic value of the number of changes of the LAC in the time is H2;

    If the common control channel configuration parameter is 1, the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue of the common control channel configuration parameter is H3;

    If the number of access grant reserved blocks is equal to or greater than 2, the eigenvalue of the number of access grant reserved blocks is T4; otherwise, the eigenvalue of the number of access grant reserved blocks is H4;

    If the minimum received signal level is less than or equal to 5, the characteristic value of the minimum received signal level is T5, otherwise, the characteristic value of the minimum received signal level is H5;

    If the cell reselection offset is greater than or equal to 60, the eigenvalue of the cell reselection offset is T6; otherwise, the eigenvalue of the cell reselection offset is H6;

    T1, T2, T3, T4, T5, T6 are integers greater than 0; H1, H2, H3, H4, H5, The default value of H6 is 0.
17. A terminal comprising:

    Processor and transceiver;

    The processor is configured to obtain, by using a system broadcast message received by the transceiver, at least two preset feature parameters of a target cell base station to be registered or reselected; and comparing the acquired preset feature parameters with a preset threshold To obtain respective eigenvalues; accumulating eigenvalues to obtain accumulated eigenvalues;

    If the accumulated feature value is greater than or equal to the preset decision threshold, determining that the target cell base station is a pseudo base station; if the accumulated feature value is less than a preset decision threshold, determining that the target cell base station is a legal cell base station.
18. The terminal according to claim 17, wherein the preset feature parameters include: a common control channel configuration parameter, an access grant reserved block number, a minimum received signal level, a cell reselection offset, and a periodic location update timer. And the number of times the location area code LAC is changed within the preset time.
19. The terminal according to claim 17, wherein

    The processor is further configured to:

    If the periodic location update timer is less than or equal to 3, the feature value of the periodic location update timer is T1; otherwise, the feature value of the periodic location update timer is H1;

    If the number of changes of the LAC in the preset time period is less than or equal to 3 when the number of LAC changes of the fixed frequency point of the cell within the preset time is greater than or equal to 3, the characteristic value of the number of changes of the LAC in the preset time is T2; otherwise, the preset is The characteristic value of the number of changes of the LAC in the time is H2;

    If the common control channel configuration parameter is 1, the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue of the common control channel configuration parameter is H3;

    If the number of access grant reserved blocks is equal to or greater than 2, the feature value of the number of access grant reserved blocks is T4. Otherwise, the feature value of the number of access grant reserved blocks is H4;

    If the minimum received signal level is less than or equal to 5, the characteristic value of the minimum received signal level is T5, otherwise, the characteristic value of the minimum received signal level is H5;

    If the cell reselection offset is greater than or equal to 60, the eigenvalue of the cell reselection offset is T6; otherwise, the eigenvalue of the cell reselection offset is H6;

    T1, T2, T3, T4, T5, and T6 are integers greater than 0; the default values of H1, H2, H3, H4, H5, and H6 are 0.
20. A storage medium storing executable instructions for performing the pseudo base station identification method according to any one of claims 1 to 5.

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