WO2020019328A1 - Procédé et appareil d'identification de pseudo-station de base - Google Patents

Procédé et appareil d'identification de pseudo-station de base Download PDF

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Publication number
WO2020019328A1
WO2020019328A1 PCT/CN2018/097607 CN2018097607W WO2020019328A1 WO 2020019328 A1 WO2020019328 A1 WO 2020019328A1 CN 2018097607 W CN2018097607 W CN 2018097607W WO 2020019328 A1 WO2020019328 A1 WO 2020019328A1
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WIPO (PCT)
Prior art keywords
cell
base station
user equipment
restricted list
pseudo base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/097607
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English (en)
Chinese (zh)
Inventor
卓超
刘涛
李洪
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2018/097607 priority Critical patent/WO2020019328A1/fr
Priority to CN201880096072.7A priority patent/CN112514435B/zh
Publication of WO2020019328A1 publication Critical patent/WO2020019328A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and a device for identifying a pseudo base station.
  • the pseudo base station obtains international mobile subscriber identity (IMSI) information of user equipment (UE) in clear text, and locates the user equipment through the IMSI information.
  • IMSI international mobile subscriber identity
  • This type of base station is mainly set up by security departments such as public security for the purpose of maintaining stability. It is usually distributed in places with a large number of people, such as railway stations, squares, shopping malls, major intersections in urban areas, and some sensitive areas, such as banks and hotels.
  • This type of base station simulates the configuration of the surrounding normal base stations and increases its own transmit power. At the same time, it modifies some of the base station configuration to induce more user equipment to camp in the pseudo base station cell, and triggers the user equipment to establish a connection with the pseudo base station, thereby obtaining the user equipment's IMSI.
  • the user equipment can easily camp on the pseudo base station cell. Even if the connection between the user equipment and the pseudo base station is released, the user equipment will likely stay in the pseudo base station cell after the network search is restarted.
  • the embodiments of the present application provide a method and a device for identifying a pseudo base station, which are used by the user equipment to identify the pseudo base station, so as to take corresponding processing to avoid frequent staying of the user equipment in the pseudo base station cell, which causes the user equipment to be unable to perform normal communication.
  • an embodiment of the present application provides a method for identifying a pseudo base station.
  • the method includes the following steps: a user equipment establishes a radio resource control RRC connection with a first base station to which a currently camping first cell belongs; and the user equipment receives the first base station A first request message sent, where the first request message is used to request an inquiry of the IMSI of the user equipment; the user equipment records the first identifier, and the first identifier is used to instruct the first base station to request the IMSI of the user equipment;
  • the first base station sends a first response message, which is used to indicate the IMSI of the user equipment; the user equipment receives the RRC connection release instruction sent by the first base station; after receiving the RRC connection release instruction, the user equipment confirms that the first When an identification is made, it is determined that the first base station is a pseudo base station.
  • the user equipment after establishing an RRC connection with the first base station, the user equipment records the first identifier when the first base station directly sends the first request message without triggering authentication. After the first base station actively releases the link, the user equipment may determine that the first base station is a pseudo base station when the first identifier is recorded.
  • the user equipment may add cell information of the first cell to a first restricted list, where the first restricted list is used to indicate that the user equipment is prohibited from camping. A cell corresponding to the cell information recorded in the first restricted list.
  • the first restricted list may also be referred to as a cell restricted list or a bar list.
  • the RRC layer of the user equipment may maintain a first restricted list. Cell information is recorded in the first restricted list, and is used to indicate that the user equipment is prohibited from camping on a cell corresponding to the recorded cell information.
  • the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a physical cell identification PCI of the first cell; and an E-UTRA absolute radio frequency channel number of the first cell.
  • EARFCN a cell frequency point of the first cell
  • a cell frequency band of the first cell a cell frequency band of the first cell
  • a physical cell identification PCI of the first cell a physical cell identification PCI of the first cell
  • E-UTRA absolute radio frequency channel number of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a physical cell identification PCI of the first cell; and an E-UTRA absolute radio frequency channel number of the first cell.
  • the user equipment After the cell information of the first cell is added to the first restricted list, the user equipment can be prevented from camping on the pseudo base station cell of the first cell again.
  • the user equipment can also perform a cell search; then, the user equipment camps on the second cell according to the cell search result, and the cell information of the second cell Not recorded in the first restricted list.
  • the user equipment needs to delete the cells in the first restricted list when performing a cell search again. Only when there is an available cell outside, will you choose to camp on that cell.
  • the user equipment can perform a network search again, so that the user equipment can camp on a legitimate base station cell for normal communication.
  • the cell information that restricts only the second cell is not recorded in the first restricted list
  • the type of the second cell is not specifically limited.
  • the second cell may be another cell belonging to the first base station (pseudo base station) and not recorded in the first restricted list
  • the second cell may be another cell belonging to another pseudo base station and not recorded in the first
  • the second cell may also be a cell belonging to a legal base station.
  • the user equipment can determine that the second cell is a pseudo base station cell by performing the foregoing pseudo base station identification method, and then add the cell information of the second cell to the first restricted list, and the user equipment will not Residing in the second cell again. If the second cell is a cell belonging to a legal base station, the user equipment can normally communicate with the base station corresponding to the second cell after camping on the second cell.
  • the user equipment may add the domain identifier of the first cell to the second restricted list according to the configuration of the user equipment.
  • the domain identifier of the first cell is The location domain LA domain identifier or tracking area TA domain identifier of the first cell, and the second restricted list is used to indicate that the user equipment is prohibited from camping on the cell corresponding to the domain identifier recorded in the second restricted list.
  • the user equipment may decide whether to add the domain identity of the first cell to the second restricted list according to the configuration. If the domain identifier of the first cell is added to the second restricted list, the user equipment may be prohibited from camping in a cell corresponding to the domain identifier of the first cell.
  • the user equipment may determine that the first base station is not a pseudo base station; then, the user equipment may add the domain identifier of the first cell to the third restricted list, and the domain identifier of the first cell may be the LA domain identifier or the TA domain identifier of the first cell,
  • the third restricted list is used to indicate that the user equipment is prohibited from camping on the cell corresponding to the domain identifier recorded in the restricted list.
  • the third restricted list and the foregoing second restricted list may be the same list.
  • the user equipment determines that the first base station is not a pseudo base station.
  • an embodiment of the present application provides a method for identifying a pseudo base station.
  • the method includes the following steps: a user equipment establishes a radio resource control RRC connection with a first base station to which a currently camping first cell belongs; The number of times that the RRC connection is released due to a communication abnormality on the first cell; when the number of times exceeds the first threshold, the user equipment determines that the first base station is a pseudo base station or the first cell is a bad cell.
  • abnormal communication conditions include, but are not limited to: the non-access layer NAS protocol protection timer of the user equipment expires; the physical layer or the media access control layer MAC layer of the user equipment reports a radio link failure RLF to the RRC layer; the first base station does not Request to query the IMSI of the user equipment, and the first base station sends an RRC connection release indication to the user equipment.
  • the user equipment can determine whether the first base station is a pseudo base station or determine whether the number of times that the RRC connection is released due to a communication abnormality on the first cell is greater than a first threshold.
  • the first cell is a bad cell.
  • the user equipment may add cell information of the first cell to a first restricted list, where the first restricted list Used to indicate that the user equipment is prohibited from camping on the cell corresponding to the cell information recorded in the first restricted list; then, the user equipment performs a cell search; if the user equipment does not search for other available cells, the user equipment uses the first cell's The cell information is deleted from the first restricted list, and the first cell is camped again; if the user equipment finds that the second cell is an available cell, the user equipment camps on the second cell, and the cell information of the second cell is not recorded in the first cell.
  • a restricted list used to indicate that the user equipment is prohibited from camping on the cell corresponding to the cell information recorded in the first restricted list.
  • the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a PCI of the first cell; and an EARFCN of the first cell.
  • adding the cell information of the first cell to the first restricted list can prevent the user equipment from staying in the first restricted list again. Plot. Subsequently, the user equipment may perform a cell search again and camp on the second cell. In addition, if the user equipment does not search for an available cell after performing a cell search again, then the user equipment does not currently have a campable cell, then the user equipment may delete the cell information of the first cell from the first restricted list, and then camp again. Stay in the first cell.
  • the user equipment may save the cell information of the first cell; the user equipment is counting the user equipment on the first cell due to a communication abnormality
  • the number of times that the RRC connection is released due to conditions includes the number of times that the RRC connection is released due to a communication abnormality on the first cell indicated by the cell information recorded by the user equipment statistics.
  • the user equipment before the user equipment establishes an RRC connection with the first base station, the user equipment can save the cell information of the currently camping cell.
  • the user equipment can determine in which cell the communication abnormality occurs, and Count the number of times for different communities.
  • the user equipment may obtain first location information used to indicate the current location of the user equipment; After the cell information of the cell is added to the first restricted list, the user equipment can obtain the second location information indicating the current location of the user equipment; then, the user equipment is in a position between the location indicated by the first location information and the location indicated by the second location information. When the distance between them is greater than the second threshold, the cell information of the first cell is deleted from the first restricted list.
  • the current first position of the pseudo base station can be recorded after determining that the first base station is a pseudo base station, and the cell information of the first cell can be continuously measured (for example, periodically measured) after the cell information of the first cell is added to the first restricted list.
  • the current position (second position) is compared with the position indicated by the first position information. When the difference between the distance between the second location and the first location is greater than the second threshold, it can be determined that the user equipment leaves the coverage area of the pseudo base station cell. At this time, the cell information of the first cell can be deleted from the first restricted list. Therefore, the user equipment can reside in a legal base station having the same configuration as the pseudo base station.
  • the user equipment may save a pseudo base station configuration identifier when determining that the system message configuration of the first base station is abnormal, such pseudo base stations
  • the configuration identifier is used to indicate that the system message configuration of the first base station is abnormal.
  • the number of RRC connection releases on the first cell due to abnormal communication conditions exceeds the first threshold, it is determined that the first base station is a pseudo base station or the first cell is a bad cell.
  • the method includes: when the number of times of the user equipment is greater than the first threshold and the pseudo base station configuration identifier is stored in the user equipment, determining that the first base station is a pseudo base station.
  • the system message configuration of the first base station can be identified to determine whether the first base station is a pseudo base station by identifying the characteristics of the existing system message configuration of the pseudo base station. That is, it can be determined whether the first base station is a pseudo base station through the system message configuration of the first base station.
  • the user equipment determines that the system message configuration of the first base station is abnormal when at least one of the following information is satisfied: the user equipment determines that multiple PLMN identifiers of the first base station configured in the shared public land mobile network PLMN list are prohibited from being configured in the PLMN identification in the same shared PLMN list; the user equipment determines that the dwell threshold of the first base station is lower than the dwell threshold threshold configured by the user equipment; the user equipment determines that the first base station is not configured with an inter-frequency neighboring cell and a different system neighboring cell; It is determined that the priority of the first base station to configure the global mobile communication GSM neighboring cell is a high reselection priority.
  • an embodiment of the present application further provides a pseudo base station identification apparatus, which is applied to user equipment and includes a transceiver unit and a processing unit.
  • the transceiver unit is configured to establish a radio resource control RRC connection with the first base station to which the first cell in which the user equipment currently resides; and receives a first request message sent by the first base station, where the first request message is used to request a user query.
  • the device's International Mobile Subscriber Identity IMSI; the processing unit is used to record a first identifier, the first identifier is used to instruct the first base station to request the IMSI of the user equipment; the transceiver unit is further configured to send a first response message to the first base station, the first A response message is used to indicate the IMSI of the user equipment; the transceiver unit is further configured to receive the RRC connection release instruction sent by the first base station; the processing unit is further configured to receive and record the first identifier when the transceiver unit receives the RRC connection release instruction When it is determined that the first base station is a pseudo base station.
  • the processing unit is further configured to: after determining that the first base station is a pseudo base station, add the cell information of the first cell to a first restricted list, and the first restricted list is used to instruct the user equipment to prohibit the station from staying. A cell corresponding to the cell information recorded in the first restricted list.
  • the processing unit is further configured to: perform cell search after adding the cell information of the first cell to the first restricted list; and camp on the second cell according to the cell search result, and the cell information of the second cell Not recorded in the first restricted list.
  • the cell information of the first cell includes at least one of the following: the cell frequency of the first cell; the cell frequency band of the first cell; the physical cell identifier of the first cell; the PCI; and the E- of the first cell.
  • UTRA absolute radio frequency channel number EARFCN UTRA absolute radio frequency channel number EARFCN.
  • the processing unit is further configured to: after the transceiver unit receives the RRC connection release indication sent by the first base station, add the domain identifier of the first cell to the second restricted list according to the configuration of the user equipment, the first The domain identifier of the cell is the LA domain identifier of the first cell or the TA domain identifier of the tracking area.
  • the second restricted list is used to indicate that the user equipment is prohibited from camping on the cell corresponding to the domain identifier recorded in the second restricted list.
  • the processing unit is further configured to: if the first identifier is not recorded in the processing unit, determine that the first base station is not a pseudo base station after receiving and sending the RRC connection release indication sent by the first base station; The domain identifier of the first cell is added to the third restricted list, the domain identifier of the first cell is the LA domain identifier or the TA domain identifier of the first cell, and the third restricted list is used to indicate that the user equipment is prohibited from staying in the restricted list The domain corresponding to the recorded domain ID.
  • an embodiment of the present application further provides a pseudo base station identification apparatus, which is applied to user equipment and includes a transceiver unit and a processing unit.
  • the transceiver unit is configured to establish a radio resource control RRC connection with the first base station to which the first cell in which the user equipment currently resides; the processing unit is configured to count the number of times that the user equipment releases the RRC connection due to an abnormal communication situation in the first cell.
  • the processing unit is further configured to determine that the first base station is a pseudo base station or the first cell is a bad cell when the number of times is greater than a first threshold.
  • the processing unit is further configured to: after determining that the first base station is a pseudo base station or the first cell is a bad cell, add the cell information of the first cell to the first restricted list, and the first restricted list It is used to instruct the user equipment to prohibit the cell corresponding to the cell information recorded in the first restricted list; perform a cell search; if no other available cell is found, the cell information of the first cell is removed from the first restricted list Delete, and residing in the first cell; if the second cell is found to be available, the second cell is camped, and the cell information of the second cell is not recorded in the first restricted list.
  • the processing unit is further configured to: before the transceiver unit establishes an RRC connection with the first base station to which the first cell belongs, save the cell information of the first cell; the processing unit counts the user equipment on the first cell When the number of RRC connection releases due to abnormal communication conditions is specifically used for: the number of times that the RRC connection is released due to communication abnormal conditions on the first cell indicated by the statistically recorded cell information.
  • the processing unit is further configured to: after determining that the first base station is a pseudo base station or the first cell is a bad cell, obtain first location information used to indicate the current location of the user equipment; After adding the cell information of the first restricted list to obtain the second location information indicating the current location of the user equipment; when the distance between the location indicated by the first location information and the location indicated by the second location information is greater than a second threshold To delete the cell information of the first cell from the first restricted list.
  • the processing unit is further configured to: before the transceiver unit establishes an RRC connection with the first base station to which the first cell belongs, save a pseudo base station configuration identifier when the system message configuration of the first base station is determined to be abnormal.
  • the pseudo base station configuration identifier is used to indicate that the system message configuration of the first base station is abnormal.
  • the processing unit determines that the first base station is a pseudo base station or the first cell is When the cell is bad, it is specifically used to determine that the first base station is a pseudo base station when the number of times is greater than the first threshold and the pseudo-base station configuration identifier is stored in the user equipment.
  • the processing unit determines that the system message configuration of the first base station is abnormal when at least one of the following information is satisfied: the processing unit determines that the first base station is configured in a plurality of shared public land mobile network PLMN lists The PLMN identity is a PLMN identity that is prohibited from being configured in the same shared PLMN list; the processing unit determines that the dwell threshold of the first base station is lower than the dwell threshold threshold configured by the user equipment; the processing unit determines that the first base station is not configured with inter-frequency neighboring cells and System neighborhood; the processing unit determines that the priority of the first base station to configure the global mobile communication GSM neighborhood is a high reselection priority.
  • the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; and a physical cell identifier PCI of the first cell.
  • abnormal communication conditions include: the non-access layer NAS protocol protection timer of the user equipment times out; the physical layer or the media access control layer MAC layer of the user equipment reports a radio link failure RLF to the RRC layer; A base station does not request to query the IMSI of the user equipment, and the first base station sends an RRC connection release indication to the user equipment.
  • an embodiment of the present application provides a pseudo base station identification device.
  • the device includes a processor, the processor is coupled to a memory, and reads an instruction in the memory, for performing the first aspect or the first aspect.
  • the method according to any one of the aspects to the second aspect or any one of the aspects.
  • pseudo base station identification device provided by any one of the third aspect to the fifth aspect or any one of the aspects may be regarded as an integrated chip in the user equipment, and may also be regarded as the user equipment.
  • the user equipment includes, but is not limited to, a smart phone, a smart watch, a tablet computer, a virtual reality (VR) device, an augmented reality (AR) device, a personal computer, a handheld computer, and a personal digital assistant.
  • a smart phone a smart watch, a tablet computer
  • a virtual reality (VR) device a virtual reality (VR) device
  • AR augmented reality
  • personal computer a handheld computer
  • personal digital assistant a personal digital assistant
  • an embodiment of the present application further provides a computer-readable storage medium for storing a program used to execute a function designed in any one of the first to second aspects or any one of the aspects.
  • the program is executed by a processor, it is used to implement any one of the first aspect to the second aspect or any one of the methods described in the design.
  • an embodiment of the present application provides a computer program product including a program code, and when the program code contained in the computer program product runs on a computer, the computer causes the computer to execute the foregoing first aspect or any of the foregoing first to second aspects.
  • the method described in one aspect or any of the aspects is designed.
  • FIG. 1 is a schematic flowchart of interaction between a pseudo base station and a user equipment according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of interaction between another pseudo base station and a user equipment according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of an application scenario according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a first pseudo base station identification method according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a second pseudo base station identification method according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a third pseudo base station identification method according to an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a fourth pseudo base station identification method according to an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a fifth pseudo base station identification method according to an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a sixth pseudo base station identification method according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a first pseudo base station identification device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a second pseudo base station identification device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a third pseudo base station identification device according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a fourth pseudo base station identification device according to an embodiment of the present application.
  • pseudo base stations in places such as train stations, squares, shopping malls, and major intersections in urban areas, or in sensitive areas such as banks and hotels.
  • the pseudo base station simulates the configuration of the surrounding normal base stations and increases its own transmission power. At the same time, it modifies the configuration of the base station to induce more user equipment to reside in the pseudo base station cell and triggers the user equipment to establish a connection with the pseudo base station, thereby obtaining the IMSI of the user equipment , Locate the user equipment by using the IMSI information.
  • the user equipment Due to the high transmission power of the pseudo base station, the user equipment is likely to camp on the pseudo base station cell. Even if the connection between the user equipment and the pseudo base station is released, the user equipment will likely stay in the pseudo base station cell after the network search is restarted.
  • the first process is a process of normal interaction between the user equipment and the pseudo base station;
  • the second process is an interaction process when a communication abnormality occurs during the interaction between the user equipment and the pseudo base station.
  • the process includes the following steps.
  • the user equipment is induced by the pseudo base station, and sends an attachment request message (ATTACH_REQ), a tracking area update request message (TAU_REQ), or a location area update request message (LAU_REQ) to the pseudo base station.
  • ATTACH_REQ attachment request message
  • TAU_REQ tracking area update request message
  • LAU_REQ location area update request message
  • the pseudo base station simulates the configuration of the surrounding normal base stations and increases its own transmission power, it is easy to induce the user equipment to trigger the establishment of a connection with the pseudo base station.
  • the user equipment sends a radio resource control (radio resource control, RRC) connection request message (RRC_CONN_REQ) to the pseudo base station, requesting to establish an RRC connection with the pseudo base station.
  • RRC radio resource control
  • the pseudo base station sends an RRC connection establishment message (RRC_CONN_SETUP) to the user equipment.
  • RRC_CONN_SETUP RRC connection establishment message
  • the user equipment sends an RRC connection establishment complete message (RRC_CONN_SETUP_CMPLT) to the pseudo base station to indicate that the RRC connection establishment between the user equipment and the pseudo base station is complete.
  • RRC_CONN_SETUP_CMPLT RRC connection establishment complete message
  • the pseudo base station no longer triggers subsequent authentication operations after the RRC connection is established, but directly sends an identification request message (IDENFITY_REQ) to the user equipment to request the IMSI of the user equipment.
  • IDENFITY_REQ identification request message
  • the user equipment sends an identity response message (IDENFITY_RSP) to the pseudo base station, which carries the IMSI of the user equipment.
  • IDENFITY_RSP identity response message
  • the pseudo base station After querying the IMSI of the user equipment, the pseudo base station sends an attachment rejection message (ATTACH_REJ), a tracking area update rejection message (TAU_REJ), or a location area update rejection message (LAU_REJ) to the user equipment.
  • ATTACH_REJ attachment rejection message
  • TAU_REJ tracking area update rejection message
  • LAU_REJ location area update rejection message
  • ATTACH_REJ, TAU_REJ, or LAU_REJ may carry a rejection cause value # 13 (roaming is not allowed in the tracking area) or # 15 (there is no suitable cell in the tracking area).
  • the pseudo base station sends an RRC connection release message (RRC_CONN_RELEASE) to the user equipment to release the RRC connection with the user equipment.
  • RRC_CONN_RELEASE an RRC connection release message
  • the non-access stratum (NAS) of the user equipment instructs the RRC layer to identify the tracking area (TA) domain identity or location area of the pseudo base station cell (
  • the location (LA) domain identity is added to the forbidden list, thereby prohibiting the user equipment from camping on the cell corresponding to the TA domain identity or the LA domain identity.
  • the NAS may instruct the RRC to add the TA domain identity of the current cell to the restricted list; if the user equipment currently camps on a 3G cell, the NAS may instruct the RRC to add the LA of the current cell
  • the domain ID is added to the restricted list. Then, the user equipment performs a network search again and camps on another cell. If the user equipment camps on the pseudo base station cell again, the above steps 1 to 8 are repeated.
  • the NAS may instruct the RRC layer to add the TA domain identity of the pseudo base station cell to the restricted list; if the user equipment is currently camping on a 3G cell, the NAS may instruct the RRC layer to The LA domain identity of the pseudo base station cell is added to the restricted list.
  • the user equipment can easily camp on the pseudo base station cell again.
  • adding the TA domain identity or LA domain identity of the pseudo base station cell to the forbidden list will also cause the user equipment to be unable to camp on the legal base station cell, resulting in a restricted range. is too big.
  • the user equipment because the user equipment does not clearly identify the resident base station as a pseudo base station, and performs appropriate processing on the pseudo base station cell, the user equipment frequently camps on the pseudo base station cell and cannot perform normal communication;
  • the user equipment directly adds the TA domain identifier or the LA domain identifier of the pseudo base station cell to the forbidden list, and the restriction range is too large, which makes it difficult for the user equipment to camp on a legitimate base station cell.
  • FIG. 2 it is an interaction flow when a communication abnormality occurs during the interaction between a user equipment and a pseudo base station.
  • the user equipment is induced by the pseudo base station, and sends an attachment request message (ATTACH_REQ), a tracking area update request message (TAU_REQ), or a location area update request message (LAU_REQ) to the pseudo base station.
  • ATTACH_REQ attachment request message
  • TAU_REQ tracking area update request message
  • LAU_REQ location area update request message
  • the user equipment sends a radio resource control (radio resource control, RRC) connection request message (RRC_CONN_REQ) to the pseudo base station, requesting to establish an RRC connection with the pseudo base station.
  • RRC radio resource control
  • the pseudo base station sends an RRC connection establishment message (RRC_CONN_SETUP) to the user equipment.
  • RRC_CONN_SETUP RRC connection establishment message
  • the user equipment sends an RRC connection establishment complete message (RRC_CONN_SETUP_CMPLT) to the pseudo base station to indicate that the RRC connection establishment between the user equipment and the pseudo base station is complete.
  • RRC_CONN_SETUP_CMPLT RRC connection establishment complete message
  • the bottom layer (physical layer or medium access control layer) of the user equipment detects a radio link failure (RLF) and reports it to the access layer;
  • RLF radio link failure
  • step 4 After step 4 is completed, there is no subsequent interaction between the pseudo base station and the user equipment, which causes the NAS protocol protection timer to expire;
  • step 4 the pseudo base station does not query the IMSI in plain text, but directly sends an RRC connection release message (RRC_CONN_RELEASE) to the user equipment to release the user equipment.
  • RRC_CONN_RELEASE an RRC connection release message
  • the occurrence of the above-mentioned communication abnormal situation will cause the RRC connection between the user equipment and the pseudo base station to be released.
  • the RRC connection release is triggered by the access layer; in case b), the RRC connection release is triggered by the NAS; in case c), the RRC connection release is triggered by the pseudo base station.
  • the user equipment When the above three situations occur, the user equipment considers that a communication abnormal situation occurs in the interaction process with the pseudo base station, and the user equipment counts the number of times that the communication abnormal situation occurs.
  • the NAS of the user equipment When the cumulative number of communication abnormalities mentioned above is less than 5 times, the NAS of the user equipment will re-trigger the user equipment to establish a connection with other base stations under the current system (that is, re-establish a chain under the current system); When it reaches 5 times, the NAS of the user equipment will trigger the user equipment to search the network in other systems. For example, when the current communication system is long term evolution (LTE), the NAS will disable LIE and trigger the user equipment to search the network in the 2G or 3G system.
  • LTE long term evolution
  • the user equipment collects statistics on communication abnormalities, it does not count the number of times that a communication abnormality occurs in a pseudo base station cell, but the sum of the number of times that the user equipment has a communication abnormality in multiple cells. . That is, when the above-mentioned communication abnormal situation occurs in the user equipment in any cell, the statistical times are increased by one.
  • the user equipment in process two, because the number of communication abnormalities counted by the user equipment is the cumulative number of times for multiple cells, and not for a certain cell, even if the user equipment frequently resides in a certain cell For a pseudo base station cell, the user equipment cannot identify the pseudo base station cell, which makes it impossible to properly process the pseudo base station cell.
  • the cumulative number of times of abnormal communication of the user equipment is less than 5 times and the chain establishment is re-triggered, since the transmission power of the pseudo base station is greater than the transmission power of the legitimate base station, the user equipment still resides in the pseudo base station cell with a high probability and cannot perform normal communication; the user When the device has five times of abnormal communication, it needs to disable the current system and go to other systems to search the network. As a result, the user equipment cannot return to the current system for a long time, which affects the service rate of the user equipment.
  • the embodiments of the present application provide a method and a device for identifying a pseudo base station, so as to identify the pseudo base station, so as to take corresponding processing to avoid frequent staying of the user equipment in the pseudo base station cell, which causes the user equipment to be unable to perform normal communication.
  • the embodiment of the present application can be applied to the communication system shown in FIG. 3.
  • the communication system includes user equipment and a base station.
  • the base station can be a pseudo base station or a legal base station.
  • the solution provided in the embodiment of the present application may be used to identify whether the base station is a pseudo base station and take corresponding processing for the identified pseudo base station, so as to prevent the user equipment from frequently camping on the pseudo base station cell. Affects the normal communication of user equipment.
  • the base station can be a network equipment (base transceiver, BTS) in code division multiple access (CDMA), or a wide-band code division multiple access, WCDMA) or time-division-synchronous code division multiple access (TD-SCDMA) network equipment (NodeB) can also be evolved network equipment in long term evolution (LTE) system (evolutional node B, eNB or e-NodeB), 5G base station in 5G network architecture (next generation system), or home evolved node (HeNB), home base station (femto), pico base station (pico)
  • LTE long term evolution
  • LTE long term evolution
  • evolutional node B, eNB or e-NodeB 5G base station in 5G network architecture (next generation system), or home evolved node (HeNB), home base station (femto), pico base station (pico)
  • LTE long term evolution
  • HeNB home evolved node
  • pico base station pico base station
  • the type of the base station is not
  • the user equipment in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device corresponding to a wireless connection function, or another processing device connected to a wireless modem.
  • the user equipment can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the user equipment can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer corresponding to the mobile terminal.
  • a mobile terminal such as a mobile phone (or a "cellular" phone) and a computer corresponding to the mobile terminal.
  • it can be a portable, compact, handheld, computer-built or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network.
  • the terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point,
  • the remote terminal, the access terminal, the user terminal, the user agent, or the user equipment are not limited in the embodiments of the present application.
  • the communication standard of the user equipment includes, but is not limited to, CDMA, WCDMA, TD-SCDMA, LTE, 5G, and the like.
  • the embodiments of the present application provide a method and a device for identifying a pseudo base station, so as to identify the pseudo base station, so as to take corresponding processing to avoid frequent staying of the user equipment in the pseudo base station cell, which causes the user equipment to be unable to perform normal communication.
  • the method and the device are based on the same inventive concept. Since the principle of the method and the device for solving the problem is similar, the implementation of the device and the method can be referred to each other, and duplicated details will not be repeated.
  • a method for identifying a pseudo base station includes the following steps:
  • S401 The user equipment establishes an RRC connection with the first base station to which the currently camping first cell belongs.
  • the first base station is a base station to which the first cell belongs.
  • the number of cells managed by the first base station is not specifically limited.
  • the number of cells managed by the first base station may be one, that is, the first cell; the number of cells managed by the first base station may also be large.
  • the first cell is one of a plurality of cells.
  • the first base station when the first base station is a pseudo base station, all cells managed by the first base station can be regarded as pseudo base station cells; when the first base station is a legal base station, all cells managed by the first base station can be regarded as legal base station cells. .
  • the user equipment receives a first request message sent by the first base station, and the first request message is used for requesting to query the IMSI of the user equipment.
  • the first base station no longer triggers subsequent authentication operations, but directly sends a first request message to the user equipment requesting to obtain the IMSI of the user equipment.
  • the first base station may send the first request message in clear text.
  • the first request message may be the aforementioned identity request message (IDENFITY_REQ).
  • the user equipment records the first identifier.
  • the first identifier is used to instruct the first base station to request the IMSI of the user equipment.
  • the first identifier may be recorded by a NAS in the user equipment.
  • S404 The user equipment sends a first response message to the first base station, where the first response message is used to indicate the IMSI of the user equipment.
  • S405 The user equipment receives an RRC connection release indication sent by the first base station.
  • the user equipment may determine that the first base station is a pseudo base station. Then, the user equipment may add the domain identifier of the first cell to the second restricted list according to the configuration of the user equipment.
  • the domain identifier of the first cell is the LA domain identifier or TA domain identifier of the first cell.
  • the second restricted list is used for The user equipment is instructed to prohibit camping on the cell corresponding to the domain identifier recorded in the second restricted list.
  • the user equipment may add the TA domain identifier of the first cell to the restricted list according to the configuration of the user equipment; if the first cell is a 3G cell, the user equipment may Add the LA domain identifier of the first cell to the restricted list.
  • the second restricted list may be regarded as the foregoing forbidden list.
  • the NAS of the user equipment may maintain a second restricted list.
  • a domain identifier is recorded in the second restricted list, and is used to indicate that the user equipment is prohibited from camping on a cell corresponding to the recorded domain identifier.
  • the NAS may send the second restricted list to the RRC layer to guide the RRC layer to select a network.
  • the user equipment may determine that the first base station is a pseudo base station. Therefore, the user equipment may decide whether to add the domain identity of the first cell to the second restricted list according to the configuration of the user equipment. If the domain identifier of the first cell is added to the second restricted list, the user equipment may be prohibited from camping in a cell corresponding to the domain identifier of the first cell.
  • the domain identifier of the first cell corresponds to all the cells in the same tracking area or location area, that is, the cell corresponding to the domain identifier of the first cell is not limited to the first cell, and may be other pseudo-domains.
  • Base station cell or legal base station cell With this implementation manner, it is possible to prevent the user equipment from camping on the cell corresponding to the domain identifier of the first cell again.
  • the domain identifier of the legal base station cell is the same as the domain identifier of the first cell, the implementation of this implementation method will result in an overly restrictive range, and the user equipment cannot camp on the legal base station cell.
  • the device is configured to choose not to add the domain identifier of the first cell to the second restricted list.
  • the pseudo base station in the interaction process between the pseudo base station and the user equipment, after the pseudo base station establishes a connection with the user equipment, it does not trigger subsequent authentication operations, but directly sends a request message for querying the IMSI to the user equipment. Therefore, in the embodiment of the present application, after the user equipment is established with the pseudo base station, if the pseudo base station directly sends the first request message to the user equipment without triggering the authentication operation, the user equipment records the first identifier. After the user equipment receives the RRC connection release indication sent by the first base station in S405, the user equipment checks whether a first identifier is recorded, and determines that the first base station is a pseudo base station if the first identifier is recorded in the user equipment.
  • the user equipment may add the cell information of the first cell to a first restricted list, where the first restricted list is used to instruct the user equipment to refrain from camping on the first restricted list.
  • the cell corresponding to the cell information is used to instruct the user equipment to refrain from camping on the first restricted list.
  • the first restricted list may also be referred to as a cell restricted list or a bar list.
  • the RRC layer of the user equipment may maintain a first restricted list. Cell information is recorded in the first restricted list, and is used to indicate that the user equipment is prohibited from camping on a cell corresponding to the recorded cell information.
  • the RRC layer of the user equipment may add the cell information of the first cell to the first restricted list.
  • the cell information of the first cell includes at least one of the following: the cell frequency of the first cell; the cell frequency band of the first cell; the physical cell ID (PCI) of the first cell; the E-UTRA absolute of the first cell Radio frequency channel number (E-UTRA absolute frequency channel number, EARFCN).
  • the cell information of the first cell is not limited to the foregoing types, as long as the cell information of the first cell can be used to identify the first cell.
  • the first restricted list is different from the foregoing second restricted list (forbidden list).
  • the first restricted list records the cell information of the first cell. That is, by adding the cell information of the first cell to the first restricted list, the user equipment can be prohibited from camping on the first cell (or the same as the first cell). Cells with the same cell information, such as cells with the same frequency as the first cell), but other cells are not prohibited.
  • a domain identifier (such as a TA domain identifier or a LA domain identifier) is recorded in the second restricted list. By adding the domain identifier of the first cell to the second restricted list, the user equipment is prohibited from staying in the domain identifier. Plot.
  • a domain identifier usually corresponds to multiple base stations (including pseudo base stations and legal base stations) in a large location area or tracking area. Adding the domain identifier of the first cell to the second restricted list will not only prevent user equipment from staying in the A pseudo base station cell may also cause the user equipment to be unable to camp on a legitimate base station cell. That is, the restricted range of the first restricted list is smaller than that of the second restricted list.
  • the cell information of the first cell can be added to the first restricted list, thereby preventing the user equipment from staying in the pseudo base station cell of the first cell again, which makes it difficult for the user equipment. Perform normal communication.
  • the user equipment is only prohibited from camping on the first cell, and there are no restrictions on cells other than the first cell. Therefore, a phenomenon that a legal base station cell is prohibited from camping due to an excessively restricted range can be avoided.
  • a cell search may be performed; then, the user equipment may camp on the second cell according to the cell search result, and the cell information of the second cell is not recorded In the first restricted list above.
  • the user equipment needs to delete the cells in the first restricted list when performing a cell search again. Only when there is an available cell outside, will you choose to camp on that cell.
  • the user equipment can perform a network search again, so that the user equipment can camp on a legitimate base station cell for normal communication.
  • the cell information that restricts only the second cell is not recorded in the first restricted list
  • the type of the second cell is not specifically limited.
  • the second cell may be another cell belonging to the first base station (pseudo base station) and not recorded in the first restricted list
  • the second cell may be another cell belonging to another pseudo base station and not recorded in the first
  • the second cell may also be a cell belonging to a legal base station.
  • the user equipment may determine that the second cell is a pseudo base station cell by performing the foregoing S401 to S405, and further add the cell information of the second cell to the first restricted list, and the user equipment will not perform the search again when searching the network again.
  • camping to the second cell If the second cell is a cell belonging to a legal base station, the user equipment can normally communicate with the base station corresponding to the second cell after camping on the second cell.
  • a fake base station (a pseudo base station cell) can be accurately identified.
  • the user equipment After the pseudo base station cell is added to the first restricted list, the user equipment does not camp on the pseudo base station cell again, which can prevent the user equipment from frequently camping on the same pseudo base station cell.
  • the user equipment can determine that the base station is a pseudo base station only after performing the above steps S401 to S405, and add the cell information of the cell to the first restricted list.
  • the user equipment when performing user cell reselection evaluation, measurement evaluation, and replying to measurement results of other standards, the user equipment can remove the pseudo base station cells from the first restricted list to avoid frequent interoperation with the pseudo base station cells.
  • the pseudo base station does not trigger subsequent authentication operations, but directly sends a request message for querying the IMSI to the user equipment, and upon receiving the The user equipment actively releases the link after sending a response message carrying the IMSI. Therefore, in the pseudo base station identification method shown in FIG. 4, after establishing an RRC connection with the first base station, the user equipment records the first identifier when the first base station directly sends the first request message without triggering authentication. After the first base station actively releases the link, the user equipment may determine that the first base station is a pseudo base station when the first identifier is recorded.
  • the method may have another implementation manner. After the user equipment establishes an RRC connection with the first base station, the user equipment does not receive the first request message sent by the first base station, so the first identifier is not recorded in the user equipment. Subsequently, if the user equipment receives the RRC connection release indication sent by the first base station, the user equipment determines that the first base station is not a pseudo base station. At this time, the user equipment may comply with the requirements of the current protocol (3GPP TS24.301, 5.5.1.2.5).
  • the domain identifier of the first cell is added to a third restricted list, and the third restricted list is used to indicate that the user equipment is prohibited from camping on a cell corresponding to the domain identifier recorded in the restricted list.
  • the user equipment may perform a network search again.
  • the third restricted list and the foregoing second restricted list may be the same list.
  • the user equipment determines that the first base station is not a pseudo base station.
  • the first base station after the first base station establishes an RRC connection with the user equipment, it does not perform any operation but directly releases the link.
  • the first base station is a legitimate base station, and the first cell may be a bad cell belonging to the first base station.
  • the embodiment of the present application further provides another pseudo base station identification method, which can be regarded as a specific example of the method shown in FIG. 4.
  • the method includes the following steps:
  • User equipment resides in a pseudo base station cell by searching the network, interoperating within this system (such as reselection, redirection, and cell change commands), interoperating between systems (such as reselection, redirection, and cell change commands).
  • the NAS of the user equipment sends an attach request message (ATTACH_REQ) / tracking area update request message (TAU_REQ) / location area update request message (LAU_REQ) to the RRC layer.
  • ATTACH_REQ attach request message
  • TAU_REQ tracking area update request message
  • LAU_REQ location area update request message
  • the RRC layer of the user equipment establishes an RRC connection with the pseudo base station according to the instructions of the NAS.
  • steps 1 to 4 in the foregoing process 1 ie, steps 1 to 4 in FIG. 1.
  • the pseudo base station Without triggering the authentication operation, the pseudo base station directly sends an identification request message to the user equipment in plain text to query the IMSI of the user equipment.
  • the identity request message can be regarded as a specific example of the first request message in the method shown in FIG. 4.
  • the NAS records query the IMSI ID in plain text.
  • querying the IMSI identifier in plain text can be regarded as a specific example of the first identifier in the method shown in FIG. 4.
  • the NAS sends an identification response message to the pseudo base station, which carries the IMSI of the user equipment.
  • the identity response message can be regarded as a specific example of the first response message in the method shown in FIG. 4.
  • the pseudo base station sends an attachment rejection message / tracking area update rejection message / location area update rejection message to the user equipment.
  • the attachment rejection message / tracking area update rejection message / location area update rejection message may carry a rejection reason value # 13 or # 15.
  • the NAS decides whether to add the TA / LA of the current cell to the second restricted list according to the user configuration.
  • the NAS indicates to the RRC layer that the current cell is a pseudo base station cell, that is, the base station that establishes an RRC connection with the user equipment is a pseudo base station.
  • the NAS determines that the base station currently establishing the connection is a pseudo base station, and indicates the determination result to the RRC layer.
  • the RRC layer adds the current cell to the first restricted list according to the instruction of the NAS.
  • the first restricted list may record the cell information of the current cell, such as the cell frequency of the current cell, the cell frequency band of the current cell, the PCI of the current cell, and the EARFCN of the current cell. After the cell information of the current cell is added to the first restricted list, the user equipment can be prevented from camping on the current cell again.
  • the user equipment When the user equipment searches for available cells outside the first restricted list, the user equipment chooses to camp on the cell, and the cell is a cell of a legal base station.
  • the cell in which the user equipment resides in step [12] can be regarded as a specific example of the second cell in the method shown in FIG. 4. It should be noted that after performing step [12], the user equipment may also camp on another pseudo base station cell. In this case, the user equipment may determine to camp on the pseudo base station cell by executing the method shown in FIG. 5. In this case, the cell is also added to the first restricted list to avoid camping on the pseudo base station cell again. In the method shown in FIG. 7, only the cell where the step [12] resides is a legal base station cell as an example for illustration.
  • an embodiment of the present application further provides a method for identifying a pseudo base station.
  • the method includes the following steps:
  • S601 The user equipment establishes an RRC connection with the first base station to which the currently camping first cell belongs.
  • step 1 For the process of establishing the RRC connection between the user equipment and the first base station, refer to step 1 to step 4 in the foregoing flow two, and details are not described herein again.
  • the first base station is a base station to which the first cell belongs.
  • the number of cells managed by the first base station is not specifically limited.
  • the number of cells managed by the first base station may be one, that is, the first cell; the number of cells managed by the first base station may also be large.
  • the first cell is one of a plurality of cells.
  • the first base station when the first base station is a pseudo base station, all cells managed by the first base station can be regarded as pseudo base station cells; when the first base station is a legal base station, all cells managed by the first base station can be regarded as legal base station cells. .
  • S602 The user equipment counts the number of times that the user equipment releases the RRC connection due to an abnormal communication situation on the first cell.
  • the NAS of the user equipment may record the number of times that the user equipment releases the RRC connection due to an abnormal communication situation on the first cell.
  • the meaning of the communication abnormal situation is the same as the “communication abnormal situation” described in the second interaction procedure between the user equipment and the pseudo base station. That is, the communication abnormality may include but is not limited to:
  • the physical layer or media access control (MAC) also called layer 2 or L2 of the user equipment reports the RLF to the RRC layer;
  • the first base station After performing S601, the first base station sends an RRC connection release instruction to the user equipment without requesting to query the IMSI of the user equipment, and releases the user equipment.
  • the RRC connection between the user equipment and the first base station is released.
  • the user equipment will actively release the RRC connection with the first base station; for the first base station without requesting an IMSI query, that is, When sending an RRC connection release indication, the first base station actively releases the RRC connection with the user equipment.
  • the difference from the foregoing procedure 2 lies in that in the foregoing procedure 2, when the user equipment performs statistics on the communication abnormal situation, the user equipment is counted in multiple cells. Sum of the number of communication exceptions. In S602, the user equipment counts the number of times that the user equipment releases the RRC connection due to an abnormal communication situation on the first cell.
  • the user equipment separately counts the number of RRC connection releases in different cells due to the foregoing communication abnormal situation. For example, after the user equipment is turned on, it camps on cell 1. On the cell 1, the RRC connection is released due to the communication abnormality described above. Then the user equipment records the number of times corresponding to cell 1. The user equipment then camps on the network after re-searching the network. Cell 2, and the RRC connection is released due to the communication abnormality described above, the user equipment records the number of times corresponding to cell 2 is 1. Then, the user equipment relocates to the cell 1 after re-searching the network, and the RRC connection is caused by the communication abnormality. Release, the number of times that the user equipment records cell 1 is 2.
  • the user equipment can save the cell information of the current camping cell.
  • the user equipment can determine which cell the communication abnormal situation occurs in, and count the number of times for different cells.
  • the user equipment before the user equipment performs S601 to establish an RRC connection with the first base station to which the first cell belongs, the user equipment can save the cell information of the first cell, and the cell information of the first cell is used to indicate that the currently camping cell of the user equipment is the first cell. A community. Then, when the user equipment performs S602 to count the number of times that the user equipment releases the RRC connection due to a communication abnormal situation on the first cell, the user equipment can count the number of times that the RRC connection is released due to the communication abnormal situation on the first cell indicated by the recorded cell information.
  • the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a PCI of the first cell; and an EARFCN of the first cell.
  • the user equipment before the user equipment establishes an RRC connection with the first base station, the user equipment can save the cell information of the currently camping cell.
  • the user equipment can determine in which cell the communication abnormality occurs, and Count the number of times for different communities.
  • the first threshold may be a value less than 5. That is to say, before the user equipment according to the existing protocol reaches a total of 5 communication abnormalities and searches for the network in other systems, it is determined that the first base station is a pseudo base station or the first cell is a bad cell and performs corresponding processing, so that the user The device can try other cells as soon as possible to avoid the user equipment from searching for other systems due to frequent staying in the pseudo base station cell and failing to return to the current system for a long time.
  • the number of RRC connection releases due to abnormal communication conditions on the first cell is greater than the first threshold in S603, it may also refer to the existing protocol to determine whether the RRC connection is released due to communication abnormal conditions on each cell. Whether the number of times reached 5 times. If it reaches five times, it triggers the user equipment to search the network in other systems; if it does not reach five times, S602 can be executed to determine whether the number of RRC connection releases in the first cell due to abnormal communication conditions is greater than the first threshold.
  • the user equipment may determine that the first base station is a pseudo base station (that is, the first cell is a pseudo base station cell) or the first cell is Bad cell.
  • bad cells include, but are not limited to, cells with lower base station transmit power, cells with higher call drop rates, cells with higher levels of congestion, cells with lower handover success rates, or cells with lower wireless connection rates.
  • the user equipment may cause multiple communication abnormalities in the first cell.
  • the user equipment may also add the cell information of the first cell to a first restricted list, and the first restricted list is used to instruct the user equipment to prohibit camping A cell corresponding to the cell information recorded in the first restricted list. Then, the user equipment performs a cell search; if the user equipment does not search for other available cells, the user equipment deletes the cell information of the first cell from the first restricted list and camps on the first cell again; if the user equipment searches for If the second cell is an available cell, the user equipment camps on the second cell, and the cell information of the second cell is not recorded in the first restricted list.
  • the first restricted list may also be referred to as a cell restricted list or a bar list.
  • the RRC layer of the user equipment may maintain a first restricted list. Cell information is recorded in the first restricted list, and is used to indicate that the user equipment is prohibited from camping on a cell corresponding to the recorded cell information.
  • the NAS may send the second restricted list to the RRC layer to guide the RRC layer to select a network.
  • the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a PCI of the first cell; and an EARFCN of the first cell.
  • the cell information that restricts only the second cell is not recorded in the first restricted list
  • the type of the second cell is not specifically limited.
  • the second cell may be another cell belonging to the first base station (pseudo base station) and not recorded in the first restricted list
  • the second cell may be another cell belonging to another pseudo base station and not recorded in the first
  • the second cell may also be a cell belonging to a legal base station.
  • the user equipment can determine whether the second cell is a pseudo base station cell or a bad cell by executing the above S601 to S603, and then add the cell information of the second cell to the first restricted list. When the user equipment searches the network again, it will Will not stay in the second cell again. If the second cell is a cell belonging to a legal base station, the user equipment can normally communicate with the base station corresponding to the second cell after camping on the second cell.
  • a fake base station cell or a bad cell can be accurately identified.
  • the user equipment does not camp on the cell again, which can prevent the user equipment from frequently camping on the same pseudo base station cell or a bad cell.
  • the user equipment can determine that the currently camped cell is a pseudo base station cell or a bad cell only after performing the above steps S601 to S603, and add the cell information of the cell First restricted list.
  • adding the cell information of the first cell to the first restricted list can prevent the user equipment from staying in the first restricted list again. Plot. Subsequently, the user equipment may perform a cell search again and camp on the second cell. In addition, if the user equipment does not search for an available cell after performing a cell search again, then the user equipment does not currently have a campable cell, then the user equipment may delete the cell information of the first cell from the first restricted list, and then camp again. Stay in the first cell.
  • the user equipment when performing user cell reselection evaluation, measurement evaluation, and replying to measurement results of other standards, the user equipment can remove the pseudo base station cells from the first restricted list to avoid frequent interoperation with the pseudo base station cells.
  • the cell information of the first cell is added to the first restricted list. Since it is not determined at this time whether the first cell is a pseudo base station cell or a bad cell, the restricted type of the first cell can be set to "restricted to find network solutions", that is, subsequent user equipment does not search for other available cells At this time, the cell information of the first cell may also be deleted from the first restricted list, thereby preventing the user equipment from having no available cells under the current system.
  • the user equipment may still reside in the first cell and wait for After the first cell is restored, normal communication with the first base station can be performed under the current system.
  • the first cell is a pseudo base station cell or a bad cell
  • other interaction processes between the user equipment and the first base station need to be combined.
  • a method for further determining whether the first cell is a pseudo base station cell or a bad cell is described below.
  • the user equipment Before the user equipment establishes an RRC connection with the first base station to which the first cell belongs, the user equipment may save a pseudo base station configuration identifier when determining that the system message configuration of the first base station is abnormal.
  • the pseudo base station configuration identifier is used to indicate the first base station.
  • the system message configuration is abnormal. Then, when the number of RRC connection releases in the first cell due to a communication abnormality is greater than the first threshold, and the pseudo base station configuration identifier is stored in the user equipment, the user equipment may determine that the first base station is a pseudo base station.
  • the user equipment determines that the system message configuration of the first base station is abnormal when at least one of the following information is satisfied: the user equipment determines that the first base station is configured in a shared public land mobile network (PLMN) list.
  • PLMN identities are PLMN identities prohibited from being configured in the same shared PLMN list; the user equipment determines that the resident threshold of the first base station is lower than the resident threshold configured by the user equipment; the user equipment determines that the first base station is not configured with an inter-frequency neighbor cell and Inter-system neighboring cells; the user equipment determines that the priority of the first base station to configure the GSM neighboring cell is a high reselection priority.
  • PLMN public land mobile network
  • the first base station when it performs system message configuration, it sends a shared PLMN list to the user equipment to indicate that the user equipment's PLMN identity is any of the list, and the user equipment can establish an RRC connection with the first base station.
  • the user equipment also maintains a PLMN list, which indicates which PLMNs cannot be shared by one base station, for example, PLMN1 of a mobile operator and PLMN2 of a telecommunications operator cannot be shared by one base station.
  • the user equipment After receiving the shared PLMN list issued by the first base station, the user equipment can compare the shared PLMN list with the PLMN list maintained by itself.
  • the user The device considers the base station to be a pseudo base station. This is because: the pseudo base station usually configures PLMN identities of multiple operators in a shared PLMN list to induce more user equipment to establish an RRC connection with itself.
  • legitimate base stations will be configured with inter-frequency neighboring cells and / or inter-system neighboring cells
  • pseudo base stations will generally not be configured with inter-frequency neighboring cells and inter-system neighboring cells.
  • the dwell threshold configured by the pseudo base station is usually low, so that when the base station's transmit power is low, the user equipment can also determine that the dwell condition is satisfied when judging based on the dwell threshold of the pseudo base station to induce the user equipment to stay, and
  • the dwell threshold configured by a legitimate base station is usually higher than the dwell threshold configured by a fake base station.
  • a pseudo base station usually configures a GSM neighbor cell as a high reselection priority. This is because: GSM does not have two-way authentication, and it is more harmful for the user equipment to reside on the GSM pseudo base station cell (user privacy is leaked and spam messages are sent).
  • the pseudo base station usually configures the GSM neighbor cell as a high reselection priority, which makes it easier for the user equipment to reselect to the GSM pseudo base station cell.
  • legal base stations in the existing network usually configure the GSM neighbors with low reselection priority to avoid reselection to GSM cells with lower rates.
  • whether the first base station is a pseudo base station may be determined by identifying whether the system message configuration of the first base station is similar to the characteristics of the existing system message configuration of the pseudo base station. That is, it can be determined whether the first base station is a pseudo base station through the system message configuration of the first base station.
  • the restricted type may be set to "unable to find the network and not restricted", that is, subsequent users
  • the device does not search for other available cells, it cannot delete the cell information of the first cell from the first restricted list, thereby preventing the user equipment from camping on the pseudo base station cell again.
  • the user equipment may disable the current system and search the network in other systems.
  • the user equipment may obtain a first location for indicating the current location of the user equipment. Information; after the user equipment adds the cell information of the first cell to the first restricted list, the user equipment can obtain second location information indicating the current location of the user equipment again. Then, when the distance between the location indicated by the first location information and the location indicated by the second location information is greater than a second threshold, the user equipment deletes the cell information of the first cell from the first restricted list.
  • the user equipment saves the acquired first location information; after that, the current location of the user equipment is measured in real time (for example, periodically) (second Location) and compare it with the location indicated by the first location information.
  • second Location the difference between the acquired current position (the second position) and the position indicated by the first position information is greater than a second threshold, the cell information of the first cell is deleted from the first restricted list.
  • the user equipment when it obtains the first location information or the second location information, it can use satellite positioning, device-to-device (D2D), vehicle external connection (V2X), and cell measurement. Obtain.
  • the measurement operation can be performed by the NAS of the user equipment or by the RRC layer.
  • the pseudo base station simulates the configuration of a legal base station (for example, the cell frequency of the pseudo base station is the same as the cell frequency of the legal base station), and induces the user equipment to camp by increasing the transmission power within a certain range.
  • the "certain range” is usually smaller than the coverage range of a legitimate base station cell. In other words, when the user equipment leaves the “certain range” of the pseudo base station to increase the transmission power, the user equipment can receive the signal of the legitimate base station and normally perform services.
  • the current first position of the pseudo base station may be recorded, and after the cell information of the first cell is added to the first restricted list, continuous measurement (for example, periodic measurement) may be performed.
  • the current position (second position) of the user equipment is compared with the position indicated by the first position information. When the difference between the distance between the second location and the first location is greater than the second threshold, it can be determined that the user equipment leaves the coverage area of the pseudo base station cell. At this time, the cell information of the first cell can be deleted from the first restricted list. Therefore, the user equipment can reside in a legal base station having the same configuration as the pseudo base station.
  • the foregoing second process of the user equipment interacting with the pseudo base station it can be known that, after the pseudo base station establishes an RRC connection with the user equipment, the RRC connection between the user equipment and the pseudo base station is released due to an abnormal communication situation. In addition, if the cell in which the user equipment currently camps is a bad cell, the foregoing communication abnormal situation may also occur. Therefore, in the pseudo base station identification method shown in FIG. 6, after establishing an RRC connection with the first base station, the user equipment can determine whether the number of RRC connection releases due to a communication abnormality on the first cell is greater than the first threshold, and can determine whether The first base station is a pseudo base station or the first cell is a bad cell.
  • the embodiments of the present application further provide the following three pseudo base station identification methods, all of which can be regarded as a specific example of the method shown in FIG. 6.
  • the method includes the following steps:
  • User equipment resides in a pseudo base station cell by searching the network, interoperating within this system (such as reselection, redirection, and cell change commands), interoperating between systems (such as reselection, redirection, and cell change commands).
  • the NAS of the user equipment records the cell information of the first cell in which it currently resides.
  • the NAS of the user equipment sends an attach request message (ATTACH_REQ) / tracking area update request message (TAU_REQ) / location area update request message (LAU_REQ) to the RRC layer.
  • ATTACH_REQ attach request message
  • TAU_REQ tracking area update request message
  • LAU_REQ location area update request message
  • the RRC layer of the user equipment establishes an RRC connection with the pseudo base station according to the NAS instruction
  • steps 1 to 4 in the foregoing flow two that is, steps 1 to 4 in FIG. 2.
  • the number of NAS attempts is +1.
  • the number of NAS attempts can be regarded as the number of times when the RRC connection is released by the user equipment due to communication abnormalities in each cell:
  • the current base station Without requesting to query the IMSI of the user equipment, the current base station sends an RRC connection release instruction to the user equipment to release the user equipment;
  • the number of NAS attempts is the sum of the number of NAS attempts by the NAS in all cells.
  • step [8] Determine whether the number of NAS attempts on the first cell reaches the configured number. If yes, go to step [10]; if not, go to step [9].
  • the number of times of configuration can be regarded as a specific example of the first threshold in the method shown in FIG. 6.
  • the NAS indicates to the RRC layer that the first cell is a pseudo base station cell or a bad cell.
  • the RRC layer adds the first cell to the first restricted list, and sets the restricted type to "No network solution restricted”.
  • the restricted type of the first cell may be set to "restricted to find network solutions.”
  • the meaning that "the network solution is not searchable" can be: if the user equipment does not search for other available cells when searching the network again, the first cell is deleted from the first restricted list.
  • the RRC layer determines whether it can search other available cells. If yes, go to step [13]; if not, go to step [14].
  • the user equipment searches for available cells outside the first restricted list, the user equipment chooses to camp on the cell, and the cell is a cell of a legal base station.
  • the cell in which the user equipment resides in step [13] can be regarded as a specific example of the second cell in the method shown in FIG. 6. It should be noted that after performing step [13], the user equipment may also camp on another pseudo base station cell or a bad cell. In this case, the user equipment can determine that it is camped on by performing the method shown in FIG. 7. In the case of a pseudo base station cell or a bad cell, the cell is also added to the first restricted list to avoid camping on the cell again. In the method shown in FIG. 7, only the cell where the step [13] resides is a legal base station cell as an example for illustration.
  • the user equipment does not search for other available cells, and deletes the first cell from the first restricted list
  • FIG. 7 can be regarded as a specific example of the method shown in FIG. 6.
  • FIG. 7 For implementation manners and technical effects that are not described in detail in the method shown in FIG. 7, refer to related descriptions in the method shown in FIG. 6.
  • the method includes the following steps:
  • User equipment resides in a pseudo base station cell by searching the network, interoperating within this system (such as reselection, redirection, and cell change commands), interoperating between systems (such as reselection, redirection, and cell change commands).
  • the NAS of the user equipment records the cell information of the first cell in which it currently resides.
  • the NAS of the user equipment sends an attach request message (ATTACH_REQ) / tracking area update request message (TAU_REQ) / location area update request message (LAU_REQ) to the RRC layer.
  • ATTACH_REQ attach request message
  • TAU_REQ tracking area update request message
  • LAU_REQ location area update request message
  • the RRC layer of the user equipment establishes an RRC connection with the pseudo base station according to the NAS instruction
  • steps 1 to 4 in the foregoing flow two that is, steps 1 to 4 in FIG. 2.
  • the number of NAS attempts is +1.
  • the number of NAS attempts can be regarded as the number of times when the RRC connection is released by the user equipment due to communication abnormalities in each cell:
  • the current base station Without requesting to query the IMSI of the user equipment, the current base station sends an RRC connection release instruction to the user equipment to release the user equipment;
  • the number of NAS attempts is the sum of the number of NAS attempts by the NAS in all cells.
  • step [8] Determine whether the number of NAS attempts on the first cell reaches the configured number. If yes, go to step [10]; if not, go to step [9].
  • the number of times of configuration can be regarded as a specific example of the first threshold in the method shown in FIG. 6.
  • the NAS indicates to the RRC layer that the first cell may be a pseudo base station cell.
  • the user equipment records the current first position of the user equipment by means of satellite positioning, D2D, V2X, and cell measurement.
  • the RRC layer adds the first cell to the first restricted list and sets the restricted type to "No network solution restricted”.
  • the restricted type of the first cell may be set to "restricted to find network solutions.”
  • the meaning that "the network solution is not searchable" can be: if the user equipment does not search for other available cells when searching the network again, the first cell is deleted from the first restricted list.
  • the user equipment records the current second position of the user equipment by means of satellite positioning, D2D, V2X, and cell measurement.
  • the NAS determines whether the difference between the distance between the second position and the first position is greater than a preset distance range. If yes, go to step [15]; if not, go back to step [13].
  • the preset distance range can be regarded as a specific example of the second threshold in the method shown in FIG. 6.
  • the NAS instructs the RRC layer to leave the pseudo base station cell.
  • the operation of judging the difference between the second position and the first position in step [14] can also be performed by the RRC layer.
  • the RRC layer in step [15] can autonomously determine that the user equipment leaves the pseudo base station cell.
  • RRC can perform the following steps [18]:
  • the RRC layer determines whether it can search other available cells. If yes, go to step [19]; if not, go to step [16] ⁇ step [17].
  • the user equipment searches for available cells outside the first restricted list, the user equipment chooses to camp on the cell, and the cell is a cell of a legal base station.
  • the cell in which the user equipment resides in step [19] can be regarded as a specific example of the second cell in the method shown in FIG. 6. It should be noted that, after performing step [19], the user equipment may also camp on another pseudo base station cell or a bad cell. In this case, the user equipment may determine that it is camped on by executing the method shown in FIG. 7. In the case of a pseudo base station cell or a bad cell, the cell is also added to the first restricted list to avoid camping on the cell again. In the method shown in FIG. 7, only the cell where the step [19] resides is a legal base station cell is used as an example for illustration.
  • FIG. 8 can be regarded as a specific example of the method shown in FIG. 6.
  • FIG. 8 For implementation manners and technical effects not described in detail in the method shown in FIG. 8, refer to related descriptions in the method shown in FIG. 6.
  • the method includes the following steps:
  • User equipment resides in a pseudo base station cell by searching the network, interoperating within this system (such as reselection, redirection, and cell change commands), interoperating between systems (such as reselection, redirection, and cell change commands).
  • the RRC layer determines whether the system message configuration is abnormal. And when the system message configuration is abnormal, the pseudo base station configuration identifier is saved.
  • the NAS of the user equipment records the cell information of the first cell in which it currently resides.
  • the NAS of the user equipment sends an attach request message (ATTACH_REQ) / tracking area update request message (TAU_REQ) / location area update request message (LAU_REQ) to the RRC layer.
  • ATTACH_REQ attach request message
  • TAU_REQ tracking area update request message
  • LAU_REQ location area update request message
  • the RRC layer of the user equipment establishes an RRC connection with the pseudo base station according to the instructions of the NAS.
  • steps 1 to 4 in the foregoing flow two that is, steps 1 to 4 in FIG. 2.
  • the number of NAS attempts is +1.
  • the number of NAS attempts can be regarded as the number of RRC connection releases caused by the communication abnormality of the user equipment in each cell:
  • the current base station Without requesting to query the IMSI of the user equipment, the current base station sends an RRC connection release instruction to the user equipment to release the user equipment;
  • the number of NAS attempts is the sum of the number of NAS attempts by the NAS in all cells.
  • step [9] Determine whether the number of NAS attempts on the first cell reaches the configured number. If yes, go to step [11]; if not, go to step [10].
  • the number of times of configuration can be regarded as a specific example of the first threshold in the method shown in FIG. 6.
  • the NAS indicates to the RRC layer that the number of NAS attempts on the first cell reaches the configured number, and the first cell may be a pseudo base station cell.
  • the RRC layer adds the first cell to the first restricted list when determining that the pseudo-base station configuration identifier is stored.
  • the cell information of the first cell is added to the first restricted list.
  • the restricted type of the first cell may be set to "unable to find the network and understand the restriction".
  • the meaning of "unable to search the network and understand the restriction” may be: if the user equipment does not search other available cells when searching the network again, the user equipment disables the current system and searches the network in other systems.
  • the RRC layer judges whether it can search other available cells. If yes, go to step [14]; if not, go to step [15].
  • the user equipment When the user equipment searches for available cells outside the first restricted list, the user equipment chooses to camp on the cell, and the cell is a cell of a legal base station.
  • the cell in which the user equipment resides in step [14] can be regarded as a specific example of the second cell in the method shown in FIG. 6. It should be noted that after performing step [14], the user equipment may also camp on another pseudo base station cell. In this case, the user equipment may determine to camp on the pseudo base station cell by executing the method shown in FIG. 7. In this case, the cell is also added to the first restricted list to avoid camping on the cell again. In the method shown in FIG. 7, only the cell where the step [14] resides is a legal base station cell is used as an example for illustration.
  • a pseudo base station configuration identifier may also be configured by the NAS record.
  • the RRC layer reports the abnormal configuration of the system message to the NAS, and the NAS stores the pseudo base station identifier.
  • the NAS may indicate to the RRC layer that the first base station is a pseudo base station in step [11]; the RRC layer may directly add the first cell to the first restricted list in step [12] And set the restricted type to "Unable to find the network and understand the restriction" according to the saved pseudo-base station identity.
  • an embodiment of the present application further provides a pseudo base station identification device, which is applied to user equipment.
  • the device can be used to perform the pseudo base station identification method shown in FIG. 4.
  • the pseudo base station identification device 1000 includes a transceiver unit 1001 and a processing unit 1002.
  • the transceiver unit 1001 receives a first request message sent by the first base station after the RRC connection is established with the first base station to which the first cell to which the user equipment currently resides belongs, and the first request message is used to request the IMSI of the user equipment;
  • the processing unit 1002 records a first identifier, where the first identifier is used to instruct the first base station to request the IMSI of the user equipment;
  • the transceiver unit 1001 sends a first response message to the first base station, and the first response message is used to indicate the IMSI of the user equipment, and Receiving the RRC connection release instruction sent by the first base station;
  • the processing unit 1002 may determine that the first base station is a pseudo base station after receiving and receiving the RRC connection release instruction and confirming that the first identifier is recorded.
  • the processing unit 1002 is further configured to: after determining that the first base station is a pseudo base station, add the cell information of the first cell to a first restricted list, and the first restricted list is used to instruct the user equipment to prohibit camping on the first A cell corresponding to the cell information recorded in a restricted list.
  • the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; a PCI of the first cell; and an EARFCN of the first cell.
  • the processing unit 1002 is further configured to: perform cell search after adding the cell information of the first cell to the first restricted list; and camp on the second cell according to the cell search result, and the cell information of the second cell is not recorded in First restricted list.
  • the processing unit 1002 is further configured to: after the transceiver unit 1001 receives the RRC connection release indication sent by the first base station, add the domain identifier of the first cell to the second restricted list according to the configuration of the user equipment, and the The domain identifier is the LA domain identifier or TA domain identifier of the first cell, and the second restricted list is used to indicate that the user equipment is prohibited from camping on the cell corresponding to the domain identifier recorded in the second restricted list.
  • the processing unit 1002 is further configured to: if the first identifier is not recorded in the processing unit 1002, after the transceiver unit 1001 receives the RRC connection release instruction sent by the first base station, determine that the first base station is not a pseudo base station; The domain identifier of a cell is added to the third restricted list.
  • the domain identifier of the first cell is the LA domain identifier or the TA domain identifier of the first cell.
  • the third restricted list is used to instruct the user equipment to prohibit recording in the restricted list.
  • the division of the units in the embodiments of the present application is schematic, and is only a logical function division. There may be another division manner in actual implementation.
  • the functional units in the embodiments of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the above integrated unit may be implemented in the form of hardware or in the form of software functional unit.
  • the integrated unit When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .
  • pseudo base station identification device 1000 shown in FIG. 10 can be used to execute the method provided by the embodiment corresponding to FIG. 4, so the implementation manner and technical effect of the pseudo base station identification device 1000 shown in FIG. 10 are not described in detail. See related description in the method shown in FIG. 4.
  • an embodiment of the present application further provides a pseudo base station identification device, which can be used to execute the pseudo base station identification method shown in FIG. 4, which may be the same as the pseudo base station identification device 1000 shown in FIG. 10. device of.
  • the pseudo base station identification device 1100 includes at least one processor 1101, which is configured to implement a corresponding function in the pseudo base station identification method provided by the embodiment of the present application.
  • the pseudo base station identification device 1100 may further include at least one memory 1102 for storing program instructions and / or data.
  • the memory 1102 and the processor 1101 are coupled.
  • the processor 1101 may operate in cooperation with the memory 1102.
  • the processor 1101 may execute program instructions stored in the memory 1102. At least one of the at least one memory 1102 may be included in the processor 1101.
  • the pseudo base station identification device 1100 may further include a communication interface 1103.
  • the pseudo base station identification device 1100 may perform information interaction with other devices (for example, the first base station) through the communication interface 1103.
  • the communication interface 1103 may be a circuit, a bus, a transceiver, or any other user equipment that can be used for information exchange.
  • the other device may be a base station, a UE, or a relay node.
  • the processor 1101 may use the communication interface 1103 to send and receive data.
  • the communication interface 1103 is used to send and receive data to and from the first base station.
  • the embodiment of the present application is not limited to the specific connection medium between the communication interface 1103, the processor 1101, and the memory 1102.
  • the memory 1102, the processor 1101, and the communication interface 1103 are connected by a bus in FIG. 11.
  • the bus is indicated by a thick line in FIG. 11.
  • the connection modes between other components are only schematically illustrated. It is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 11, but it does not mean that there is only one bus or one type of bus.
  • An embodiment of the present application further provides a chip, which includes the foregoing communication interface and the foregoing processor, and is configured to support a pseudo base station identification device 1100 to implement a method corresponding to the embodiment shown in FIG. 4.
  • An embodiment of the present application further provides a computer-readable storage medium for storing computer software instructions required to be executed to execute the foregoing processor, which includes a program for executing the foregoing processor.
  • an embodiment of the present application further provides a pseudo base station identification device.
  • the pseudo base station identification device may be used to execute the pseudo base station identification method shown in FIG. 6.
  • the pseudo base station identification device 1200 includes a transceiver unit 1201 and a processing unit 1202.
  • the transceiver unit 1201 counts the number of times that the RRC connection is released by the user equipment in the first cell due to an abnormal communication situation after the RRC connection is established with the first base station to which the user equipment currently resides.
  • the processing unit 1202 determines that the first base station is a pseudo base station or the first cell is a bad cell when the number of RRC connection releases is greater than a first threshold due to a communication abnormality.
  • the abnormal communication conditions include, but are not limited to: the NAS protocol protection timer of the user equipment expires; the physical layer or the MAC layer of the user equipment reports the RLF to the RRC layer; the first base station does not request to query the IMSI of the user equipment, and the first base station reports to the The user equipment sends an RRC connection release indication.
  • the processing unit 1202 is further configured to: after determining that the first base station is a pseudo base station or the first cell is a bad cell, add the cell information of the first cell to a first restricted list, where the first restricted list is used to indicate The user equipment is prohibited from camping on the cell corresponding to the cell information recorded in the first restricted list; performing a cell search; if no other available cell is found, deleting the cell information of the first cell from the first restricted list, And camping on the first cell again; if the second cell is found to be available, the second cell is camped on, and the cell information of the second cell is not recorded in the first restricted list.
  • the cell information of the first cell includes at least one of the following: a cell frequency point of the first cell; a cell frequency band of the first cell; and a PCI of the first cell.
  • the processing unit 1202 is further configured to: before the transceiver unit 1201 establishes an RRC connection with the first base station to which the first cell belongs, save the cell information of the first cell; the processing unit 1202 counts the user equipment on the first cell due to When the number of times of RRC connection release caused by abnormal communication conditions is specifically used for: the number of times of RRC connection release due to abnormal communication conditions on the first cell indicated by the statistically recorded cell information.
  • the processing unit 1202 is further configured to: after determining that the first base station is a pseudo base station or the first cell is a bad cell, obtain first location information used to indicate a current location of the user equipment; After joining the first restricted list, obtain second location information used to indicate the current location of the user equipment; when the distance between the location indicated by the first location information and the location indicated by the second location information is greater than a second threshold, The cell information of a cell is deleted from the first restricted list.
  • the processing unit 1202 is further configured to: before the transceiver unit 1201 establishes an RRC connection with the first base station to which the first cell belongs, save a pseudo base station configuration identifier when determining that the system message configuration of the first base station is abnormal, and the pseudo base station The configuration identifier is used to indicate that the system message configuration of the first base station is abnormal.
  • the processing unit 1202 determines that the first base station is a pseudo base station or the first cell is a bad cell when the number of RRC connection release times exceeds the first threshold due to a communication abnormality. It is used for determining that the first base station is a pseudo base station when the number of times is greater than the first threshold and a pseudo-base station-like configuration identifier is stored in the user equipment.
  • the processing unit 1202 determines that the system message configuration of the first base station is abnormal when at least one of the following information is satisfied: the processing unit 1202 determines that multiple PLMNs configured by the first base station in the PLMN list are identified as prohibited from being configured on the same shared PLMN PLMN identification in the list; the processing unit 1202 determines that the resident threshold of the first base station is lower than the resident threshold configured by the user equipment; the processing unit 1202 determines that the first base station is not configured with an inter-frequency neighboring cell and a different system neighboring cell; the processing unit 1202 It is determined that the priority of the first base station configuring the GSM neighboring cell is a high reselection priority.
  • an embodiment of the present application further provides a pseudo base station identification device, which can be used to perform the pseudo base station identification method shown in FIG. 6, which may be the same as the pseudo base station identification device 1200 shown in FIG. 12. device of.
  • the pseudo base station identification device 1300 includes at least one processor 1301, which is configured to implement a corresponding function in the pseudo base station identification method provided by the embodiment of the present application.
  • the pseudo base station identification device 1300 may further include at least one memory 1302 for storing program instructions and / or data.
  • the memory 1302 and the processor 1301 are coupled.
  • the processor 1301 may cooperate with the memory 1302.
  • the processor 1301 may execute program instructions stored in the memory 1302. At least one of the at least one memory 1302 may be included in the processor 1301.
  • the pseudo base station identification device 1300 may further include a communication interface 1303.
  • the pseudo base station identification device 1300 may perform information interaction with other devices (for example, the first base station) through the communication interface 1303.
  • the communication interface 1303 may be a circuit, a bus, a transceiver, or any other user equipment that can be used for information exchange.
  • the other device may be a base station, a UE, or a relay node.
  • the processor 1301 may use the communication interface 1303 to send and receive data.
  • the communication interface 1303 is used to send and receive data to and from the first base station.
  • the embodiments of the present application are not limited to the specific connection medium between the communication interface 1303, the processor 1301, and the memory 1302.
  • a memory 1302, a processor 1301, and a communication interface 1303 are connected by a bus in FIG. 13, and the bus is indicated by a thick line in FIG. 13.
  • the connection modes of other components are only schematically illustrated. It is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 13, but it does not mean that there is only one bus or one type of bus.
  • An embodiment of the present application further provides a chip, which includes the foregoing communication interface and the foregoing processor, and is configured to support a pseudo base station identification device 1300 to implement a method corresponding to the embodiment shown in FIG. 6.
  • pseudo base station identification device shown in FIG. 10 to FIG. 13 may be regarded as an integrated chip in user equipment, and may also be regarded as user equipment.
  • the user equipment includes, but is not limited to, a smart phone, a smart watch, a tablet computer, a VR device, an AR device, a personal computer, a handheld computer, and a personal digital assistant.
  • An embodiment of the present application further provides a computer-readable storage medium for storing computer software instructions required to be executed to execute the foregoing processor, which includes a program for executing the foregoing processor.
  • this application may be provided as a method, a system, or a computer program product. Therefore, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a particular manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions
  • the device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

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Abstract

L'invention concerne un procédé et un appareil d'identification de pseudo-station de base, permettant d'identifier une pseudo-station de base par un équipement utilisateur, de façon à entreprendre un traitement correspondant afin d'éviter que l'équipement utilisateur ne réside fréquemment sur une cellule de pseudo-station de base, ce qui entraîne la non réalisation d'une communication normale par l'équipement utilisateur. Le procédé comprend les étapes suivantes : l'équipement utilisateur établit une connexion RRC avec une première station de base à laquelle appartient une première cellule où réside actuellement l'équipement utilisateur ; l'équipement utilisateur reçoit un premier message de demande envoyé par la première station de base, le premier message de demande étant utilisé pour demander une interrogation d'un IMSI de l'équipement utilisateur ; l'équipement utilisateur enregistre un premier identifiant, le premier identifiant étant utilisé pour ordonner à la première station de base de demander d'interroger l'IMSI de l'équipement utilisateur ; l'équipement utilisateur reçoit une instruction de libération de connexion RRC envoyée par la première station de base ; après réception de l'instruction de libération de connexion RRC et confirmation que le premier identifiant est enregistré, l'équipement utilisateur détermine la première station de base en tant que pseudo-station de base.
PCT/CN2018/097607 2018-07-27 2018-07-27 Procédé et appareil d'identification de pseudo-station de base Ceased WO2020019328A1 (fr)

Priority Applications (2)

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PCT/CN2018/097607 WO2020019328A1 (fr) 2018-07-27 2018-07-27 Procédé et appareil d'identification de pseudo-station de base
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