WO2017185873A1 - 伪基站识别方法、装置及终端、存储介质 - Google Patents

伪基站识别方法、装置及终端、存储介质 Download PDF

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Publication number
WO2017185873A1
WO2017185873A1 PCT/CN2017/074826 CN2017074826W WO2017185873A1 WO 2017185873 A1 WO2017185873 A1 WO 2017185873A1 CN 2017074826 W CN2017074826 W CN 2017074826W WO 2017185873 A1 WO2017185873 A1 WO 2017185873A1
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Prior art keywords
base station
preset
feature
equal
value
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English (en)
French (fr)
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车晓东
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Nubia Technology Co Ltd
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Nubia Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/12—Detection or prevention of fraud
    • H04W12/121—Wireless intrusion detection systems [WIDS]; Wireless intrusion prevention systems [WIPS]
    • H04W12/122—Counter-measures against attacks; Protection against rogue devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/12—Detection or prevention of fraud

Definitions

  • the present invention relates to communications technologies, and in particular, to a pseudo base station identification method, apparatus, terminal, and storage medium.
  • 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.
  • the user terminal 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.
  • 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.
  • an embodiment of the present invention provides a pseudo base station identification method, including:
  • 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.
  • 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.
  • the corresponding preset threshold value with the preset feature parameter may be dynamically adjusted.
  • the preset feature parameters of the target cell base station are acquired.
  • the preset feature parameters of the target cell base station are acquired.
  • the value of the periodic location update timer sent by the base station 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • an embodiment of the present invention provides a pseudo base station identification apparatus, including:
  • 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.
  • 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.
  • the corresponding preset threshold with the preset feature parameter supports dynamic adjustment.
  • the acquiring module is further configured to acquire a preset feature parameter of the target cell base station when the terminal registers.
  • the acquiring module is further configured to acquire a preset feature parameter of the target cell base station when the terminal performs cell reselection.
  • the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:
  • the periodic location update timer sent by the base station 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.
  • 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.
  • the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:
  • 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.
  • the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:
  • 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.
  • the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:
  • 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.
  • the obtained preset feature parameters are respectively compared with their corresponding preset thresholds to obtain respective feature values, including:
  • 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.
  • 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.
  • an embodiment of the present invention provides a pseudo base station identification method, including:
  • the target cell base station is a pseudo base station
  • the target cell base station is a legal cell base station.
  • 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.
  • the comparing the acquired preset feature parameters with their preset thresholds to obtain respective feature values including:
  • the feature value I1 of the periodic location update timer is T1; otherwise, the feature value is H1;
  • the eigenvalue I2 is T2, otherwise, the characteristic value is H2;
  • the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue I3 is H3.
  • the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.
  • the characteristic value I5 of the minimum received signal level is T5, and otherwise, the characteristic value I5 is H5.
  • the feature value I6 of the cell reselection offset is T6, otherwise, the feature value is H6.
  • 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.
  • 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.
  • 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.
  • the comparing module is further configured to:
  • the feature value of the periodic location update timer is T1; otherwise, the feature value of the periodic location update timer is H1;
  • 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;
  • the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue of the common control channel configuration parameter is H3.
  • 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.
  • the characteristic value of the minimum received signal level is T5, otherwise, the characteristic value of the minimum received signal level is H5.
  • 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.
  • an embodiment of the present invention provides a terminal, including:
  • 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
  • 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.
  • 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.
  • the processor is further configured to:
  • the feature value I1 of the periodic location update timer is T1; otherwise, the feature value is H1;
  • the eigenvalue I2 is T2, otherwise, the characteristic value is H2;
  • the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue I3 is H3.
  • the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.
  • the characteristic value I5 of the minimum received signal level is T5, and otherwise, the characteristic value I5 is H5.
  • the feature value I6 of the cell reselection offset is T6, otherwise, the feature value is H6.
  • 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.
  • FIG. 1 is a schematic diagram showing the hardware structure of a terminal according to an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of a method for identifying a pseudo base station according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a pseudo base station identification method according to another embodiment of the present invention.
  • FIG. 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.
  • 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.
  • IP Internet Protocol
  • 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.
  • a pseudo base station identification method includes:
  • 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.
  • 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 timing a periodic location update timing.
  • the terminal may obtain the preset feature parameters described above from the broadcast message.
  • 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.
  • the base station 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.
  • BCCH Broadcast Control Channel
  • the base station 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.
  • the 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).
  • 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.
  • 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.
  • a location update procedure is initiated to access the base station with the strong signal strength.
  • 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.
  • 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.
  • the preset time may be set to 6 minutes, 20 minutes, etc., and the second threshold may be set to 2 or 3.
  • CCH_CONF Common Control Channel Configuration Parameter
  • 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;
  • 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.
  • CCCH Common Control Channel
  • 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.
  • 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.
  • TRX carrier frequencies
  • CCCH_CONF common control channel configuration parameter
  • 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.
  • 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.
  • 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).
  • 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.
  • 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 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.
  • 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.
  • the fifth threshold can be set to five.
  • the cell reselection parameter cell selection parameter + cell reselection offset - cell reselection temporary offset * H (penalty time) -T).
  • T is the timing of the counter.
  • T starts counting.
  • the penalty time is a parameter [0, 31] seconds.
  • 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.
  • 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.
  • 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.
  • the sixth threshold can be set to 60.
  • I1 to I6 are the feature values corresponding to the respective preset feature parameters.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the terminal 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.
  • 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.
  • a common control channel configuration parameter BS-AG-BLKS-RES
  • RXLEV_ACCESS-MIN minimum received signal level
  • CELL_RESELECT_OFFSET cell reselection offset
  • TS3212 periodic location update timer
  • step S31 the acquired preset feature parameters are respectively compared with their preset thresholds to obtain respective feature values.
  • each of the preset feature parameters is preset with a feature value that determines that the cell is a pseudo base station cell.
  • 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.
  • the feature values corresponding to each preset feature parameter can be set as follows:
  • the characteristic value I1 of the periodic position update timer is T1; otherwise, the characteristic value is H1.
  • the feature value I2 is T2; otherwise, the feature value is H2.
  • the characteristic value I3 of the common control channel configuration parameter is T3, otherwise, the characteristic value I3 is H3.
  • the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.
  • the characteristic value I5 of the minimum received signal level is T5, otherwise, the characteristic value I5 is H5.
  • the feature value I6 of the cell reselection offset is T6, otherwise, the feature value is H6.
  • the feature value In is set to Tn, otherwise the feature value is set to Hn.
  • 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.
  • step S32 the feature values are accumulated to obtain the accumulated feature values.
  • 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.
  • step S33 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.
  • 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.
  • 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.
  • 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
  • T6 is set to 1.
  • the preset decision threshold J is set to 3.
  • 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.
  • CCH CONF common control channel configuration parameter
  • BS-AG-BLKS-RES access grant reserved block number
  • 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.
  • FIG. 4 it is a schematic diagram of a terminal boot registration process according to an embodiment of the present invention.
  • 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.
  • 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.
  • an embodiment of the present invention further provides a pseudo base station identification apparatus, including:
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a microphone 106 such as a microphone 106, an earpiece 107, etc.
  • earpiece 107 such as a microphone 106, an earpiece 107, 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;
  • 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.
  • 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.
  • the feature value I1 of the periodic location update timer is T1; otherwise, the feature value is H1;
  • the eigenvalue I2 is T2, otherwise, the characteristic value is H2;
  • the eigenvalue I3 of the common control channel configuration parameter is T3, otherwise, the eigenvalue I3 is H3.
  • the feature value I4 of the access grant reserved block number is T4, and otherwise, the feature value I4 is H4.
  • the characteristic value I5 of the minimum received signal level is T5, and otherwise, the characteristic value I5 is H5.
  • the feature value I6 of the cell reselection offset is T6, otherwise, the feature value 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.
  • 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.
  • 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.
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • CDMA Code Division Multiple Access
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • GSM Global System for Mobile Communications
  • 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.
  • PSTN public switched telephone network
  • 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.).
  • BS 270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology.
  • BTS Base Transceiver Subsystem
  • 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.”
  • each partition of a particular BS 270 may be referred to as a plurality of cellular stations.
  • 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.
  • GPS Global Positioning System
  • the satellite 300 helps locate at least one of the plurality of terminals 100.
  • 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.
  • at least one GPS satellite 300 can selectively or additionally process satellite DMB transmissions.
  • 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.
  • 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.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Partition Multiple Access
  • SC-FDMA Single-Carrier Frequency Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution

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Abstract

本发明公开了一种伪基站识别方法、装置及终端、存储介质，所述方法包括：获取目标小区基站的预设特征参数；将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值；将特征值进行累加，并将累加的特征值与预设判决阈值进行比较，以确定目标小区基站是否为伪基站。实施本发明的有益效果是，通过为不同的预设参数设置不同的特征值，并通过累加比较的方式，可更加准确的识别出伪基站，使终端不会驻留在伪基站，从而避免用户遭受伪基站的危害，提高了终端在接入网络进行通信的状态下使用的安全性。

Description

伪基站识别方法、装置及终端、存储介质 技术领域
本发明涉及通信技术，尤其涉及一种伪基站识别方法、装置及终端、存储介质。
背景技术
伪基站即假基站，其可以通过模仿合法基站，使得用户终端接入。伪基站可通过短信、电话、上网等多种方式向用户推送信息，不仅对用户造成干扰，还会对用户的安全、隐私等造成危害，以及极大地损耗公共频谱资源。
且用户终端一旦驻留到伪基站，就将无法连接到公用电信网络，会影响到用户终端的正常使用。
然而，目前尚无较好地识别伪基站的方法。
发明内容
本发明实施例要解决的技术问题在于，针对相关技术的上述缺陷，提供一种伪基站识别方法、装置及终端、存储介质。
本发明实施例解决其技术问题所采用的技术方案是：
第一方面，本发明实施例提供一种伪基站识别方法，包括：
获取目标小区基站的预设特征参数；
将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值；
将特征值进行累加，并将累加的特征值与预设判决阈值进行比较，以确定目标小区基站是否为伪基站。
在一个实施例中，所述预设特征参数至少包括以下参数中的两者：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内LAC的变更次数。
在一个实施例中，与所述预设特征参数的对应预设阈值可动态调整。
在一个实施例中，当终端进行注册时，获取目标小区基站的预设特征参数。
在一个实施例中，当终端进行小区重选时，获取目标小区基站的预设特征参数。
在一个实施例中，当接收到基站下发的周期性位置更新定时器的值时，将其与第一阈值进行比较，如果基站下发的周期性位置更新定时器的值小于或等于第一阈值，则周期性位置更新定时器对应的特征值I1赋值为T1；若周期性位置更新定时器的值大于第一阈值，则周期性位置更新定时器对应的特征值I1赋值为H1。
在一个实施例中，监测在预设时间内，基站LAC的变更次数，若基站LAC的变更次数大于或等于第二阈值，则预设时间内LAC的变更次数对应的特征值I2赋值为T2；若变更次数小于第二阈值，则预设时间内LAC的变更次数对应的特征值I2赋值为H2。
在一个实施例中，若公共控制信道配置参数与第三阈值相同，则公共控制信道配置参数对应的特征值I3赋值为T3；若公共控制信道配置参数与第三阈值不相同，则公共控制信道配置参数对应的特征值I3赋值为H3。
在一个实施例中，若检测到基站的接入准许保留块数被配置为第四阈值，则接入准许保留块数对应的特征值I4赋值为T4；若接入准许保留块数与第四 阈值不相同，则接入准许保留块数对应的特征值I4赋值为H4。
在一个实施例中，若最小接收信号电平小于或等于第五阈值时，则最小接收信号电平对应的特征值I5赋值为T5；若最小接收信号电平大于第五阈值，则最小接收信号电平对应的特征值I5赋值为H5。
在一个实施例中，若小区重选偏移大于或等于第六阈值时，则小区重选偏移对应的特征值I6赋值为T6；若小区重选偏移小于第六阈值，则小区重选偏移对应的特征值I6赋值为H6。
第二方面，本发明实施例提供一种伪基站识别装置，包括：
获取模块，配置为获取目标小区基站的预设特征参数；
比较模块，配置为将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值；
判决模块，配置为将特征值进行累加，并将累加的特征值与预设判决阈值进行比较，以确定目标小区基站是否为伪基站。
在一个实施例中，所述预设特征参数至少包括以下参数中的两者：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内LAC的变更次数。
在一个实施例中，与所述预设特征参数的对应预设阈值支持动态调整。
在一个实施例中，所述获取模块，还配置为当终端进行注册时，获取所述目标小区基站的预设特征参数。
在一个实施例中，所述获取模块，还配置为当终端进行小区重选时，获取所述目标小区基站的预设特征参数。
在一个实施例中，所述将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值，包括：
当接收到基站下发的周期性位置更新定时器的值时，将其与第一阈值进行比较，如果基站下发的周期性位置更新定时器的值小于或等于第一阈值，则周期性位置更新定时器对应的特征值I1赋值为T1；若周期性位置更新定时器的值大于第一阈值，则周期性位置更新定时器对应的特征值I1赋值为H1。
在一个实施例中，所述将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值，包括：
监测在预设时间内，基站LAC的变更次数，若基站LAC的变更次数大于或等于第二阈值，则预设时间内LAC的变更次数对应的特征值I2赋值为T2；若变更次数小于第二阈值，则预设时间内LAC的变更次数对应的特征值I2赋值为H2。
在一个实施例中，所述将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值，包括：
若公共控制信道配置参数与第三阈值相同，则公共控制信道配置参数对应的特征值I3赋值为T3；若公共控制信道配置参数与第三阈值不相同，则公共控制信道配置参数对应的特征值I3赋值为H3。
在一个实施例中，所述将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值，包括：
若检测到基站的接入准许保留块数被配置为第四阈值，则接入准许保留块数对应的特征值I4赋值为T4；若接入准许保留块数与第四阈值不相同，则接入准许保留块数对应的特征值I4赋值为H4。
在一个实施例中，所述将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值，包括：
若最小接收信号电平小于或等于第五阈值时，则最小接收信号电平对应的 特征值I5赋值为T5；若最小接收信号电平大于第五阈值，则最小接收信号电平对应的特征值I5赋值为H5。
在一个实施例中，所述将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值，包括：
若小区重选偏移大于或等于第六阈值时，则小区重选偏移对应的特征值I6赋值为T6；若小区重选偏移小于第六阈值，则小区重选偏移对应的特征值I6赋值为H6。
其中，上述T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、H6的默认值为0。
第三方面，本发明实施例提供一种伪基站识别方法，包括：
通过系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数；
将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值；
将特征值进行累加得到累加的特征值；
若累加的特征值大于或等于预设判决阈值，则判定该目标小区基站为伪基站；
若累加的特征值小于预设判决阈值，则判定该目标小区基站为合法小区基站。
在一个实施例中，所述预设特征参数包括：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内LAC的变更次数。
在一个实施例中，所述将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值，包括：
若周期性位置更新定时器小于或等于3，则周期性位置更新定时器的特征值I1为T1，否则，其特征值为H1；
若预设时间内LAC的变更次数，满足预设时间之内的小区一固定频点LAC变更次数大于或等于3时，其特征值I2为T2，否则，其特征值为H2；
若公共控制信道配置参数为1，则公共控制信道配置参数的特征值I3为T3，否则，其特征值I3为H3。
若接入准许保留块数等于或大于2，则接入准许保留块数的特征值I4为T4，否则，其特征值I4为H4。
若最小接收信号电平小于或等于5，则最小接收信号电平的特征值I5为T5，否则，其特征值I5为H5。
若小区重选偏移大于或等于60，则小区重选偏移的特征值I6为T6，否则，其特征值为H6。
其中，上述T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、H6的默认值为0。
第四方面，本发明实施例提供一种终端，包括：
获取模块，配置为通过系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数；
比较模块，配置为将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值；
判决模块，配置为将特征值进行累加得到累加的特征值；若累加的特征值大于或等于预设判决阈值，则判定该目标小区基站为伪基站；若累加的特征值小于预设判决阈值，则判定该目标小区基站为合法小区基站。
在一个实施例中，所述预设特征参数包括：公共控制信道配置参数、接入 准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器和预设时间内位置区码LAC的变更次数。
在一个实施例中，所述比较模块，还配置为：
若周期性位置更新定时器小于或等于3，则周期性位置更新定时器的特征值为T1，否则，周期性位置更新定时器的特征值为H1；
若预设时间内LAC的变更次数，满足预设时间之内的小区一固定频点LAC变更次数大于或等于3时，则预设时间内LAC的变更次数的特征值为T2，否则，预设时间内LAC的变更次数的特征值为H2；
若公共控制信道配置参数为1，则公共控制信道配置参数的特征值I3为T3，否则，公共控制信道配置参数的特征值为H3。
若接入准许保留块数等于或大于2，则接入准许保留块数的特征值为T4，否则，接入准许保留块数的特征值为H4。
若最小接收信号电平小于或等于5，则最小接收信号电平的特征值为T5，否则，最小接收信号电平的特征值为H5。
若小区重选偏移大于或等于60，则小区重选偏移的特征值为T6，否则，小区重选偏移的特征值为H6。
其中，T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、H6的默认值为0。
第五方面，本发明实施例提供一种终端，包括：
处理器和收发机；
所述存储器，配置为通过所述收发机接收的系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数；将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值；将特征值进行累加得到累加的特 征值；
若累加的特征值大于或等于预设判决阈值，则判定该目标小区基站为伪基站；若累加的特征值小于预设判决阈值，则判定该目标小区基站为合法小区基站。
在一个实施例中，所述预设特征参数包括：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内LAC的变更次数。
在一个实施例中，所述处理器还配置为：
若周期性位置更新定时器小于或等于3，则周期性位置更新定时器的特征值I1为T1，否则，其特征值为H1；
若预设时间内LAC的变更次数，满足预设时间之内的小区一固定频点LAC变更次数大于或等于3时，其特征值I2为T2，否则，其特征值为H2；
若公共控制信道配置参数为1，则公共控制信道配置参数的特征值I3为T3，否则，其特征值I3为H3。
若接入准许保留块数等于或大于2，则接入准许保留块数的特征值I4为T4，否则，其特征值I4为H4。
若最小接收信号电平小于或等于5，则最小接收信号电平的特征值I5为T5，否则，其特征值I5为H5。
若小区重选偏移大于或等于60，则小区重选偏移的特征值I6为T6，否则，其特征值为H6。
第六方面，本发明实施例提供一种存储介质，存储有可执行指令，用于执行本发明实施例提供的伪基站识别方法。
本发明实施例提供的伪基站识别方法、装置及终端、存储介质，具有以下 有益效果：可准确的识别出伪基站，使终端不会驻留在伪基站，从而避免用户遭受伪基站的危害，提高了终端在接入网络进行通信的状态下使用的安全性。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明一实施例的终端的硬件结构示意图；
图2是本发明一实施例的伪基站识别方法的流程示意图；
图3是本发明另一实施例的伪基站识别方法的流程示意图；
图4是本发明一实施例的终端开机注册流程的示意图；
图5是本发明一实施例的终端小区重选的流程示意图；
图6是本发明一实施例的伪基站识别装置的结构示意图；
图7是本发明实施例提供的一种通信系统的结构示意图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
图1为本发明一实施例的终端的硬件结构示意图。本发明实施例的终端100包括：天线101、收发机102、处理器103、数字信号处理芯片104、编解码器105、听筒106、麦克风107。
数字信号处理芯片104包括适当的硬件、逻辑器件、电路和/或编码，用于进行音频信号处理，例如，在通话过程中的回声抑制、噪声抑制等音频信号处理。
编解码器(Codec)105包括适当的硬件、逻辑器件、电路和/或编码，用 于进行A/D以及D/A转换。
听筒106包括适当的硬件、逻辑器件、电路和/或编码，用于输出声音信号。
麦克风107包括适当的硬件、逻辑器件、电路和/或编码，用于采集语音信号。
收发机102负责把来自处理器103的信号调制到射频频段，以及经功率放大等处理后由天线101发射出去。收发机102还负责将天线101接收到的信号经过低功率噪声放大、混频等处理后送入处理器103。
处理器103配置为进行通信协议栈物理层的基带处理功能，包括数字联合检测、调制/解调、信道编码/译码等，以及用于处理复杂的逻辑操作以及进行任务分配，为用户提供交互接口，执行终端的操作系统等。此外，终端100还包括存储器、电源单元、定位单元、显示单元等等用于执行相应的功能。
基站200，具体可以是指接入网中在空中接口上通过一个或多个扇区与终端100通信的设备。基站可以配置为建个接收到的空中帧与网际协议(IP)分组进行相互转换，作为终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。基站还可协调对空中接口的属性管理。
小区基站可持续发送广播消息。终端100及时接收广播消息或在需要时才接收广播消息(例如，周期性接收或者在进行小区搜索时再接收)。终端100可根据接收到的广播消息，发现小区基站，并可以通过选择来确定是否接入小区基站。一个终端可能会接收多个小区基站发送的广播消息，并可从中选择合适的小区，比如信号质量较好的小区基站等，从而驻留在该小区基站。
基于上述终端硬件结构，提出本发明伪基站识别方法及装置各个实施例。
如图2所示，本发明一实施例的伪基站识别方法包括：
S21、获取目标小区基站的预设特征参数。
在本发明的一实施例中，预设特征参数至少包括以下其中之一：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内位置区码(LAC，Location Area Code)的变更次数。
终端可从广播消息中获取上述的预设特征参数。
在本发明的实施例中，来自基站的广播消息中携带的控制信道描述参数可以包括公共控制信道配置参数、接入准许保留块数参数、LAC、周期性位置更新定时器等等。广播消息中携带的小区选择参数可以包括最小接收信号电平及小区重选偏移参数等等。
无论是运营商提供的基站，还是伪基站，发送的广播消息中都可以包括这些参数。
S22、将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值。
例如，对于周期性位置更新定时器，基站设置周期性位置更新定时器后，将通过广播控制信道(BCCH，Broadcast Control Channel)广播给终端。终端依照周期性位置更新定时器计时，超时则触发位置更新请求。对于正常的基站，若周期性位置更新定时器的值过小，会导致小区的信令负载过大，同时会大幅增加终端的功耗。而对于伪基站，周期性位置更新定时器被配置得越小，在小区网络容量一定的情况下，越有利于伪基站及时的将已经收到短信的终端踢出，以吸入更多还没有收到短信的终端。因此，伪基站会将周期性位置更新定时器设置的很小，例如，将周期性位置更新定时器设置为1(对应的是6min)。
由此，在本发明的一实施例中，可设置一第一阈值，当接收到基站下发的 周期性位置更新定时器的值时，将其与第一阈值进行比较，如果基站下发的周期性位置更新定时器(TS3212)的值小于或等于第一阈值，则判定该基站是伪基站的特征值I1赋值为T1；若周期性位置更新定时器(TS3212)的值大于第一阈值，则该基站是伪基站的特征值I1赋值为H1。在一个优选实施例中，可将第一阈值设置为3(对应的是18min)，来对当前接入的基站是伪基站的概率进行判决。
对于LAC，当终端检测到信号强度较大的基站，且终端存储的LAC与该基站广播的LAC不同时，会发起位置更新流程，以接入该信号强度较大的基站。通常一个位置区覆盖有数十个甚至上百的基站，所以一般是好几十个小区共享同一LAC。由于运营商布网防止同频干扰的原因，不可能在一个频点上边，短时间内基站LAC频繁发生变更。由此，可以设置一第二阈值，监测在预设时间内，基站LAC的变更次数，若基站LAC的变更次数大于或等于第二阈值，则该基站是伪基站的特征值I2赋值为T2；若变更次数小于第二阈值，则该基站是伪基站的特征值I2赋值为H2。在一个优选实施例中，预设时间可设置为6分钟、20分钟等等，第二阈值可设置为2或3。
对于公共控制信道配置参数(CCCH_CONF)，其包含于信息单元“控制信道描述”中，在每个基站广播的系统消息中传送。其主要作用是发送准许接入消息和寻呼消息，该参数的配置一般在小区规划时根据话务模型就已配置好。一般的，对于小区中的载频(TRX，收发单元)数为1个或2个的情况，公共控制信道的配置采用一个基本物理信道且与SDCCH共用，公共控制信道配置参数取值为001；小区中的TRX数为3个或4个的情况，公共控制信道的配置采用一个基本物理信道且不与专用控制信道(Stand-Alone Dedicated Control Channel)共用，公共控制信道配置参数取值000。对于小区中的TRX 数超过4个的情况，可以使用多个公共控制信道(CCCH，Common Control Channel)物理信道。
当CCCH信道使用一个物理信道且与SDCCH共用时，CCCH的信道容量最小；当CCCH使用一个物理信道且不与SDCCH共用时，CCCH的信道容量其次；其它情况时，CCCH使用的物理信道数越多，其容量越大。
一般情况下，运营商小区为了提供更多的用户服务，载频(TRX)数量都比较多，因此，很少有基站会将公共控制信道配置参数(CCCH_CONF)的取值设置为001，除非有足够硬件设备的支持。对于伪基站来说，支持多个物理信道或者同时支持很多的载频数量没有必要，根据伪基站的业务特征，同一时刻支持一个频点对已经可以满足业务需求，如果同一时刻支持多个频点对于伪基站来说可能导致终端频繁的重选对于伪基站的业务特征来说毫无益处。其次伪基站处于节省成本的考虑，也会将公共控制信道配置参数CCCH_CONF的取值设置为001。由此，可以设置一第三阈值，若公共控制信道配置参数与第三阈值相同，则判定该基站是伪基站的特征值I3赋值为T3；若公共控制信道配置参数与第三阈值不相同，则判断该基站是伪基站的特征值I3赋值为H3。在一个实施例中，第三阈值可设为1。
对于接入准许保留块数，其用以表示每个BCCH复帧中CCCH信道上为AGCH保留的消息块数，其取值范围为：若CCCH与SDCCH不共用物理信道，则取值为0～7，若CCCH与SDCCH共用物理信道，则取值为0～2。
接入准许保留块数的取值原则是：在保证AGCH信道不过载的情况下，应尽可能减小该参数以缩短移动台响应寻呼的时间，提高系统的服务性能。因此，接入准许保留块数的一般取值为1(CCCH与SDCCH共用一个物理信道)、2或3(其它CCCH组合情况)。
由此，可以设置一第四阈值，若检测到基站的接入准许保留块数被配置为第四阈值，则该基站是伪基站的特征值I4赋值为T4；若接入准许保留块数与第四阈值不相同，则该基站是伪基站的特征值I4赋值为H4。由于伪基站一般会采用CCCH与SDCCH共用一个物理信道的方案，而伪基站为了使更多的用户驻留，一般会将接入准许保留块数的值设置为2，在一个优选实施例中，可将第四阈值设置为2。
对于最小接收信号电平，其关系到小区选择参数C1的计算，一般最小接收信号电平的取值接近于终端的接收灵敏度。最小接收信号电平的值越小，小区的接入门槛也就越低，也就意味着会有更多的终端接入，这也就会引起小区业务量过载(正常的小区业务有语音、短信、数据、信令等)。但是对于伪基站，为了使更多的用户接入，会将最小接收信号电平的值设置得很低。由此，可设置一第五阈值，若最小接收信号电平小于或等于第五阈值时，则该基站是伪基站的特征值I5赋值为T5；若最小接收信号电平大于第五阈值，则该基站是伪基站的特征值I5赋值为H5。在一个优选实施例中，可将第五阈值设置为5。
对于小区重选偏移，当惩罚时间参数(penalty_time,pt)的取值不等于31时，小区重选参数＝小区选择参数+小区重选偏移-小区重选临时偏移*H(惩罚时间-T)。其中，T为计数器的计时时间，当一个小区被终端统计在邻区里面时，T就开始计数，当该小区被踢出统计的6个邻区时，T复位还原。惩罚时间是一个参数[0，31]秒。H是一个函数，函数的意义是当X>＝0时，H(X)＝1，当X<0时，H(X)＝0。可以看到，如果小区重选偏移(CELL_RESELECT_OFFSET，CRO)的取值过高，那么该小区的接入优先级就提升，终端很容易从其它服务小区重选到该小区，且不再容易切换回其它 小区。所以，正常的小区配置该参数都不会配置过高，因为过高会导致该小区业务负荷过大，导致业务质量恶化，同时也不利于该地区几个小区的业务分摊。由此，可设置一第六阈值，将小区重选偏移与第六阈值相比较，若小区重选偏移大于或等于第六阈值时，则该基站是伪基站的特征值I6赋值为T6；若小区重选偏移小于第六阈值，则该基站是伪基站的特征值I6赋值为H6。
由于合法基站的小区重选偏移该值的取值范围一般是0-63。在一个实施例中，可将第六阈值设置为60。在本发明的实施例中，I1～I6即为各个预设特征参数对应的特征值。
S23、将特征值进行累加，并将累加的特征值与预设判决阈值进行比较，以确定目标小区基站是否为伪基站。
在本发明的实施例中，至少选择两个比较结果进行累加。即将上述的I1、I2、I3、I4、I5、I6中至少两者进行累加，并将累加的值与预设判决阈值进行比较，若大于或等于预设值，则将该基站识别为伪基站，否则将该基站识别为合法基站。例如，若I1+I2+I3+I4+I5+I6+…+In>＝J，则将该小区基站判定为伪基站；若I1+I2+I3+I4+I5+I6+…+In<J，则将该小区基站判定为合法基站。
当识别为伪基站后，终端可拒绝驻留在该伪基站，即不向该伪基站发起位置更新注册等，以使得终端不会驻留在伪基站。
在本发明的一实施例中，T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、H6的默认值为0。
在一些实施例中，与预设特征参数的对应预设阈值可动态调整，即T1～T6以及H1～H6均可动态设置。例如，若根据某一预设特征参数的结果可确定该基站为合法基站，则可将相应的H1～H6中的一者或多者设置为负值，以使得最终的累加结果必然小于预设判决阈值J；若根据某一预设特征参数的结果可 确定该基站为伪基站，则可将相应的T1～T6中的一者或多者的值设置得较高，以使得最终的累加结果必然大于预设判决阈值J。
本发明实施例的伪基站识别方法，通过为不同的预设参数设置不同的特征值，并通过累加比较的方式，可更加准确的识别出伪基站，使终端不会驻留在伪基站，从而避免用户遭受伪基站的危害，提高了终端在接入网络进行通信的状态下使用的安全性。
参见图3，在本发明的另一实施例中，伪基站的识别方法包括：
在步骤S30、通过系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数。
终端在进行注册或小区重选时，接收广播消息，并将广播消息中包含的预设特征参数提取出。在本发明的实施例中，获取的预设特征参数为以下6个特征参数中的至少两个：公共控制信道配置参数(CCCH CONF)、接入准许保留块数(BS-AG-BLKS-RES)、最小接收信号电平(RXLEV_ACCESS-MIN)、小区重选偏移(CELL_RESELECT_OFFSET)、周期性位置更新定时器(TS3212)、预设时间内LAC的变更次数。
在步骤S31、将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值。
在本发明的实施例中，为每个预设特征参数都预设其对判决该小区是伪基站小区的特征值。根据上述描述，本发明实施例中将特征值量化为一固定可优化数值，该数值可以用一大于0的整数值来表示，也可以用百分数来表示即概率的形式表示。
例如，可按照以下方式设置每个预设特征参数对应的特征值：
在本发明的一实施例中，若周期性位置更新定时器TS3212小于或等于3， 也就是时间小于18分钟(min)时，周期性位置更新定时器的特征值I1为T1，否则，其特征值为H1。
若预设时间内LAC的变更次数，满足预设时间(20min)之内的小区一固定频点LAC变更次数大于或等于3时，其特征值I2为T2，否则，其特征值为H2。
若公共控制信道配置参数CCCH CONF＝1时，公共控制信道配置参数的特征值I3为T3，否则，其特征值I3为H3。
若接入准许保留块数BS-AG-BLKS-RES等于(或大于)2时，接入准许保留块数的特征值I4为T4，否则，其特征值I4为H4。
若最小接收信号电平RXLEV_ACCESS-MIN小于或等于5时，最小接收信号电平的特征值I5为T5，否则，其特征值I5为H5。
若小区重选偏移CELL_RESELECT_OFFSET大于或等于60时，小区重选偏移的特征值I6为T6，否则，其特征值为H6。
此外，还可考虑其它预设特征参数，设置其满足相应的条件时，将其特征值In设为Tn，否则将其特征值设为Hn。
在本发明的一实施例中，T1、T2、T3、T4、T5、T6…Tn为大于0的整数。H1、H2、H3、H4、H5、H6…Hn的默认值为0。
在步骤S32、将特征值进行累加得到累加的特征值。
在步骤S33、判断累加的特征值是否大于或等于预设判决阈值，若大于或等于则在步骤S34，将该目标小区基站判定为伪基站；并在步骤S35将该基站的频点或LAI加入禁止(forbiden)列表；以及在步骤S36中从候选小区按照协议选取合法小区基站进行注册并获得服务。
若在步骤S33中，判定累加的特征值为小于预设判决阈值，则在步骤S37 中判定该目标小区基站为合法小区基站，进行注册获得服务。
在本发明的实施例中，设置一预设判决阈值J，若I1+I2+I3+I4+I5+I6+…+In>＝J，则将该小区基站判定为伪基站；若I1+I2+I3+I4+I5+I6+…+In<J，则将该小区基站判定为合法小区基站。
在本发明的一实施例中，若基于大量数据分析，根据合法小区基站的特点，合法小区基站的某一预设特征参数一定不会设为X，因此，若该预设特征参数被设为X，则可以明确的确定该小区基站为伪基站，因此，可将相应的将该预设特征参数的特征值(T1～T6)的值设置得较高，使得最终的累加的特征值一定会大于预设判决阈值，而准确的将其判定为伪基站。
相应的，若基于大量数据分析，根据合法小区基站的特点，若某一预设特征参数被设置为Y，则可以明确的确定该小区基站为合法小区基站，因此，可将相应的将该预设特征参数的特征值(H1～H6)设置得较低，例如，设置为负数(例如，-10等)，使得最终的累加的特征值一定会小于预设判决阈值，而准确的将其判定为合法小区基站。
在本发明的一个优选实施例中，可将T1设置为2，T2设置为1，T3设置为2，T4设置为1，T5设置为1，T6设置为1。将H1设置为0，H2设置为0，H3设置为0，H4设置为0，H5设置为0，H6设置为0。预设判决阈值J设置为3。
在本发明的实施例中，由于预设特征参数可选择两个或两个以上，因此，可设置多个预设判决阈值，分别与选择的预设特征参数的组合相对应。例如，当选择两个预设特征参数，且选择的预设特征参数为公共控制信道配置参数(CCCH CONF)和接入准许保留块数(BS-AG-BLKS-RES)时，将I1和I2进行累加，并将其累加和与预设判决阈值J1进行比较。
本发明实施例的伪基站识别方法，通过为不同的预设参数设置不同的特征值，并通过累加比较的方式，可更加准确的识别出伪基站，使终端不会驻留在伪基站，从而避免用户遭受伪基站的危害，提高了终端在接入网络进行通信的状态下使用的安全性。
参见图4，为本发明的一实施例的终端开机注册流程的示意图。
当终端进行开机注册时，接收小区基站发送的广播消息，根据小区基站的信号质量进行排序，将信号质量最好的小区基站作为目标小区基站。随后，根据上述的伪基站识别方法判断该目标小区基站是否为伪基站，如果判断结果为，目标小区基站是伪基站则不发起位置更新注册，并重新进行搜网，并选择其它小区基站进行判断和/或注册；如果判断结果为目标小区基站不是伪基站，则发起位置更新注册，以驻留在该目标小区基站。进一步的，发起位置更新注册后，如果注册失败，则选择其它小区基站。
参见图5，在本发明的另一实施例中，若终端原注册在某个小区基站，根据邻区测量结果及重选算法需要重选到新的小区基站，则根据接收到的广播消息，选择目标小区基站，并根据上述的伪基站识别方法判断该目标小区基站是否为伪基站：如果判断结果为该目标小区基站是伪基站，则重新进行搜网，并选择其它小区基站进行判断和/或注册。如果判断结果为该目标小区不是伪基站，则进行重选位置更新注册，以驻留在该目标小区基站。
相应的，参见图6，本发明实施例还提供一种伪基站识别装置，包括：
获取模块，配置为获取目标小区基站的预设特征参数；
比较模块，配置为将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值；
判决模块，配置为将特征值进行累加，并将累加的特征值与预设判决阈值 进行比较，以确定目标小区基站是否为伪基站。
其中，预设特征参数至少包括以下参数中的两者：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内LAC的变更次数。
例如，当接收到基站下发的周期性位置更新定时器的值时，将其与第一阈值进行比较，如果基站下发的周期性位置更新定时器的值小于或等于第一阈值，则周期性位置更新定时器对应的特征值I1赋值为T1；若周期性位置更新定时器的值大于第一阈值，则周期性位置更新定时器对应的特征值I1赋值为H1。
监测在预设时间内，基站LAC的变更次数，若基站LAC的变更次数大于或等于第二阈值，则预设时间内LAC的变更次数对应的特征值I2赋值为T2；若变更次数小于第二阈值，则预设时间内LAC的变更次数对应的特征值I2赋值为H2。
若公共控制信道配置参数与第三阈值相同，则公共控制信道配置参数对应的特征值I3赋值为T3；若公共控制信道配置参数与第三阈值不相同，则公共控制信道配置参数对应的特征值I3赋值为H3。
若检测到基站的接入准许保留块数被配置为第四阈值，则接入准许保留块数对应的特征值I4赋值为T4；若接入准许保留块数与第四阈值不相同，则接入准许保留块数对应的特征值I4赋值为H4。
若最小接收信号电平小于或等于第五阈值时，则最小接收信号电平对应的特征值I5赋值为T5；若最小接收信号电平大于第五阈值，则最小接收信号电平对应的特征值I5赋值为H5。
若小区重选偏移大于或等于第六阈值时，则小区重选偏移对应的特征值I6 赋值为T6；若小区重选偏移小于第六阈值，则小区重选偏移对应的特征值I6赋值为H6。
应理解，本发明实施例的伪基站识别装置识别伪基站的方式可以参照上述图1-图5及相应描述而理解。
相应的，本发明实施例还提供一种终端，图1示出了终端的一个可选的硬件结构示意图，终端至少包括如图1示出的处理器103和收发机102。
根据图1，实际应用中根据对终端功能的实际需求，终端中还可以设置的各种输入/输入部件，如麦克风106、听筒107等，通过数字解码芯片104和编解码器来实现基本的语音功能，如语音通话、录音等。
收发机102，配置为通过天线101接收呈现系统广播消息的射频信号；
处理器103，配置为通过行通信协议栈物理层的基带处理功能，包括数字联合检测、调制/解调、信道编码/译码等，从射频信号得到系统广播消息；
通过系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数，通过系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数；将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值；将特征值进行累加得到累加的特征值；
若累加的特征值大于或等于预设判决阈值，则判定该目标小区基站为伪基站；若累加的特征值小于预设判决阈值，则判定该目标小区基站为合法小区基站。
例如，预设特征参数包括：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内LAC的变更次数。
若周期性位置更新定时器小于或等于3，则周期性位置更新定时器的特征值I1为T1，否则，其特征值为H1；
若预设时间内LAC的变更次数，满足预设时间之内的小区一固定频点LAC变更次数大于或等于3时，其特征值I2为T2，否则，其特征值为H2；
若公共控制信道配置参数为1，则公共控制信道配置参数的特征值I3为T3，否则，其特征值I3为H3。
若接入准许保留块数等于或大于2，则接入准许保留块数的特征值I4为T4，否则，其特征值I4为H4。
若最小接收信号电平小于或等于5，则最小接收信号电平的特征值I5为T5，否则，其特征值I5为H5。
若小区重选偏移大于或等于60，则小区重选偏移的特征值I6为T6，否则，其特征值为H6。
其中，T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、H6的默认值为0。
另外，本发明实施例的终端中识别伪基站的实现方式可参照上述图1-图5及相应描述而理解。
本发明实施例提供的终端可以为诸如折叠型、直板型、摆动型、滑动型终端等等的各种类型的终端，例如，终端可以为智能手机等移动终端。现在将参考图7描述其中根据本发明的实施例提供的终端能够操作的通信系统。
这样的通信系统可以使用不同的空中接口和/或物理层。例如，由通信系统使用的空中接口包括例如频分多址(FDMA)、时分多址(TDMA)、码分多址(CDMA)和通用移动通信系统(UMTS)(特别地，长期演进(LTE))、全球移动通信系统(GSM)等等。作为非限制性示例，下面的描述涉及CDMA 通信系统，但是这样的教导同样适用于其它类型的系统。
参考图7，CDMA无线通信系统可以包括多个终端100、多个基站(BS)270、基站控制器(BSC)275和移动交换中心(MSC)280。MSC280被构造为与公共电话交换网络(PSTN)290形成接口。MSC280还被构造为与可以经由回程线路耦接到基站270的BSC275形成接口。回程线路可以根据若干己知的接口中的任一种来构造，所述接口包括例如E1/T1、ATM，IP、PPP、帧中继、HDSL、ADSL或xDSL。将理解的是，如图7中所示的系统可以包括多个BSC2750。
每个BS270可以服务一个或多个分区(或区域)，由多向天线或指向特定方向的天线覆盖的每个分区放射状地远离BS270。或者，每个分区可以由用于分集接收的两个或更多天线覆盖。每个BS270可以被构造为支持多个频率分配，并且每个频率分配具有特定频谱(例如，1.25MHz,5MHz等等)。
分区与频率分配的交叉可以被称为CDMA信道。BS270也可以被称为基站收发器子系统(BTS)或者其它等效术语。在这样的情况下，术语"基站"可以用于笼统地表示单个BSC275和至少一个BS270。基站也可以被称为"蜂窝站"。或者，特定BS270的各分区可以被称为多个蜂窝站。
如图7中所示，广播发射器(BT)295将广播信号发送给在系统内操作的终端100。如图1中所示的广播接收模块111被设置在终端100处以接收由BT295发送的广播信号。在图7中，示出了几个全球定位系统(GPS)卫星300。卫星300帮助定位多个终端100中的至少一个。
在图7中，描绘了多个卫星300，但是理解的是，可以利用任何数目的卫星获得有用的定位信息。如图1中所示的GPS模块115通常被构造为与卫星300配合以获得想要的定位信息。替代GPS跟踪技术或者在GPS跟踪技术之外，可以 使用可以跟踪移动终端的位置的其它技术。另外，至少一个GPS卫星300可以选择性地或者额外地处理卫星DMB传输。
作为无线通信系统的一个典型操作，BS270接收来自各种终端100的反向链路信号。终端100通常参与通话、消息收发和其它类型的通信。特定基站270接收的每个反向链路信号被在特定BS270内进行处理。获得的数据被转发给相关的BSC275。BSC提供通话资源分配和包括BS270之间的软切换过程的协调的移动管理功能。BSC275还将接收到的数据路由到MSC280，其提供用于与PSTN290形成接口的额外的路由服务。类似地，PSTN290与MSC280形成接口，MSC与BSC275形成接口，并且BSC275相应地控制BS270以将正向链路信号发送到终端100。
本发明实施例还提供一种存储介质，存储有可执行指令，用于执行本发明实施例中结合图2至图5任一附图提供的伪基站识别方法；实际应用中，可为光盘、硬盘或磁盘等存储介质，可选为非瞬间存储介质。存储介质可以为闪存(Flash)、光盘、硬盘等各种形式的非易失性存储介质。可执行指令可以采用集中的方式在存储介质中存储，或者，可以采用分布式的方式在不同存储介质中存储。
本发明实施例的伪基站识别方法、装置及终端、存储介质，通过为不同的预设参数设置不同的特征值，并通过累加比较的方式，可更加准确的识别出伪基站，使终端不会驻留在伪基站，从而避免用户遭受伪基站的危害，提高了终端在接入网络进行通信的状态下使用的安全性。
本发明实施例中的终端100还可以被称为移动设备、终端、接入终端、用户单元等。终端100可以是智能电话、平板计算机、笔记本电脑、或者被配置 为使用2G/3G/4G等无线通信协议进行通信的其它设备。
流程图中或在本发明的实施例中以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本发明实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本发明的实施例所述技术领域的技术人员所理解。
本发明实施例描述的技术可用于各种通信系统，例如第二代移动通信系统(2G)，第三代移动通信系统(3G)或第四待移动通信系统(4G)等。还例如，全球移动通信(GSM)系统，码分多址(CDMA)系统，时分多址(TDMA)系统，宽带码分多址(WCDMA)系统，频分多址(FDMA)系统，正交频分多址(OFDMA)系统，单载波频分多址系统(SC-FDMA)系统，通用分组无线业务(GPRS)系统，长期演进(LTE)系统，以及其它类似通信系统。出于解释的目的，前面的描述使用了特定的术语，以提供对本发明的透彻理解。然而，对本领域的技术人员来说显而易见的是，为了实践本发明并不需要具体的细节。本发明的具体实施例的前述描述是为了图示和说明的目的而呈现。它们并不意在详尽的或将本发明限于所公开的准确形式。鉴于上面的教义，许多修改和变化是可能的。为了最好地解释本发明的原理及其实际应用而示出并描述了这些实施例，从而使本领域的其他技术人员能够最好地利用本发明和具有适于预期的特定使用的各种修改的各种实施例。意在本发明的范围由随后的权利要求和其等同物来限定。

Claims (20)

  1. 一种伪基站识别方法，包括：
    获取目标小区基站的预设特征参数；
    将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值；
    将特征值进行累加，并将累加的特征值与预设判决阈值进行比较，以确定目标小区基站是否为伪基站。
  2. 根据权利要求1所述的方法，其中，所述预设特征参数至少包括以下参数中的两者：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内位置区码LAC的变更次数。
  3. 根据权利要求2所述的方法，其中，与所述预设特征参数的对应预设阈值支持动态调整。
  4. 根据权利要求1-3任一项所述的方法，其中，当终端进行注册时，获取所述目标小区基站的预设特征参数。
  5. 根据权利要求1-3任一项所述的方法，其中，当终端进行小区重选时，获取所述目标小区基站的预设特征参数。
  6. 一种伪基站识别装置，包括：
    获取模块，配置为获取目标小区基站的预设特征参数；
    比较模块，配置为将获取的预设特征参数，分别与其对应的预设阈值进行比较，以获得各自的特征值；
    判决模块，配置为将特征值进行累加，并将累加的特征值与预设判决阈值 进行比较，以确定目标小区基站是否为伪基站。
  7. 根据权利要求6所述的伪基站识别装置，其中，
    所述预设特征参数至少包括以下参数中的两者：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器、预设时间内位置区码的变更次数。
  8. 根据权利要求7所述的伪基站识别装置，其中，与所述预设特征参数的对应预设阈值支持动态调整。
  9. 根据权利要求6-8任一项所述的伪基站识别装置，其中，
    所述获取模块，还配置为当终端进行注册时，获取所述目标小区基站的预设特征参数。
  10. 根据权利要求6-8任一项所述的伪基站识别装置，其中，
    所述获取模块，还配置为当终端进行小区重选时，获取所述目标小区基站的预设特征参数。
  11. 一种伪基站识别方法，包括：
    通过系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数；
    将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值；
    将特征值进行累加得到累加的特征值；
    若累加的特征值大于或等于预设判决阈值，则判定该目标小区基站为伪基站；
    若累加的特征值小于预设判决阈值，则判定该目标小区基站为合法小区基站。
  12. 根据权利要求11所述的方法，其中，所述预设特征参数包括：公共 控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器和预设时间内位置区码LAC的变更次数。
  13. 根据权利要求12所述的方法，其中，所述将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值，包括：
    若周期性位置更新定时器小于或等于3，则周期性位置更新定时器的特征值为T1，否则，周期性位置更新定时器的特征值为H1；
    若预设时间内LAC的变更次数，满足预设时间之内的小区一固定频点LAC变更次数大于或等于3时，则预设时间内LAC的变更次数的特征值为T2，否则，预设时间内LAC的变更次数的特征值为H2；
    若公共控制信道配置参数为1，则公共控制信道配置参数的特征值I3为T3，否则，公共控制信道配置参数的特征值为H3；
    若接入准许保留块数等于或大于2，则接入准许保留块数的特征值为T4，否则，接入准许保留块数的特征值为H4；
    若最小接收信号电平小于或等于5，则最小接收信号电平的特征值为T5，否则，最小接收信号电平的特征值为H5；
    若小区重选偏移大于或等于60，则小区重选偏移的特征值为T6，否则，小区重选偏移的特征值为H6；其中，
    T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、H6的默认值为0。
  14. 一种终端，包括：
    获取模块，配置为通过系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数；
    比较模块，配置为将获取的预设特征参数分别与其预设阈值相比较，以获 得各自的特征值；
    判决模块，配置为将特征值进行累加得到累加的特征值；若累加的特征值大于或等于预设判决阈值，则判定该目标小区基站为伪基站；若累加的特征值小于预设判决阈值，则判定该目标小区基站为合法小区基站。
  15. 根据权利要求14所述的终端，其中，所述预设特征参数包括：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器和预设时间内位置区码LAC的变更次数。
  16. 根据权利要求14所述的方法，其中，
    所述比较模块，还配置为：
    若周期性位置更新定时器小于或等于3，则周期性位置更新定时器的特征值为T1，否则，周期性位置更新定时器的特征值为H1；
    若预设时间内LAC的变更次数，满足预设时间之内的小区一固定频点LAC变更次数大于或等于3时，则预设时间内LAC的变更次数的特征值为T2，否则，预设时间内LAC的变更次数的特征值为H2；
    若公共控制信道配置参数为1，则公共控制信道配置参数的特征值I3为T3，否则，公共控制信道配置参数的特征值为H3；
    若接入准许保留块数等于或大于2，则接入准许保留块数的特征值为T4，否则，接入准许保留块数的特征值为H4；
    若最小接收信号电平小于或等于5，则最小接收信号电平的特征值为T5，否则，最小接收信号电平的特征值为H5；
    若小区重选偏移大于或等于60，则小区重选偏移的特征值为T6，否则，小区重选偏移的特征值为H6；其中，
    T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、 H6的默认值为0。
  17. 一种终端，包括：
    处理器和收发机；
    所述处理器，配置为通过所述收发机接收的系统广播消息获取即将注册或者重选的目标小区基站的至少两个预设特征参数；将获取的预设特征参数分别与其预设阈值相比较，以获得各自的特征值；将特征值进行累加得到累加的特征值；
    若累加的特征值大于或等于预设判决阈值，则判定该目标小区基站为伪基站；若累加的特征值小于预设判决阈值，则判定该目标小区基站为合法小区基站。
  18. 根据权利要求17所述的终端，其中，所述预设特征参数包括：公共控制信道配置参数、接入准许保留块数、最小接收信号电平、小区重选偏移、周期性位置更新定时器和预设时间内位置区码LAC的变更次数。
  19. 根据权利要求17所述的终端，其中，
    所述处理器，还配置为：
    若周期性位置更新定时器小于或等于3，则周期性位置更新定时器的特征值为T1，否则，周期性位置更新定时器的特征值为H1；
    若预设时间内LAC的变更次数，满足预设时间之内的小区一固定频点LAC变更次数大于或等于3时，则预设时间内LAC的变更次数的特征值为T2，否则，预设时间内LAC的变更次数的特征值为H2；
    若公共控制信道配置参数为1，则公共控制信道配置参数的特征值I3为T3，否则，公共控制信道配置参数的特征值为H3；
    若接入准许保留块数等于或大于2，则接入准许保留块数的特征值为T4， 否则，接入准许保留块数的特征值为H4；
    若最小接收信号电平小于或等于5，则最小接收信号电平的特征值为T5，否则，最小接收信号电平的特征值为H5；
    若小区重选偏移大于或等于60，则小区重选偏移的特征值为T6，否则，小区重选偏移的特征值为H6；其中，
    T1、T2、T3、T4、T5、T6为大于0的整数；H1、H2、H3、H4、H5、H6的默认值为0。
  20. 一种存储介质，存储有可执行指令，用于执行权利要求1至5任一项所述的伪基站识别方法。
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