CN111278003B - Position updating processing method and mobile terminal - Google Patents
Position updating processing method and mobile terminalDownload PDFInfo
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- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/12—Detection or prevention of fraud
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/12—Detection or prevention of fraud
- H04W12/121—Wireless intrusion detection systems [WIDS]; Wireless intrusion prevention systems [WIPS]
- H04W12/122—Counter-measures against attacks; Protection against rogue devices
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
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Abstract
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a location update processing method and a mobile terminal.
Background
The pseudo base station is a communication base station which is illegally erected, and can acquire Subscriber Identity Module (SIM) information by using a vulnerability of a wireless communication technology, send advertisement short messages to a mobile terminal of a user and even intercept short messages received by the user, thereby bringing great hidden danger to the information security of the user. The pseudo base station may also disable the user's mobile terminal from connecting to the legitimate operator network, disabling the user from using the mobile terminal normally.
A pseudo base station is in a form of a Long Term Evolution (LTE) -Global System for Mobile Communications (GSM) combined pseudo base station, firstly attracts a Mobile terminal to reside through the LTE pseudo base station, and then guides the Mobile terminal to a cell of the GSM pseudo base station so as to carry out illegal communication behaviors on the Mobile terminal.
Disclosure of Invention
The embodiment of the application provides a position updating processing method and a mobile terminal, which are used for reducing security risks brought by a pseudo base station.
In a first aspect, a location update processing method is provided, including:
after a mobile terminal sends a position updating request message to a current resident LTE base station, receiving a position updating rejection message which is returned by the LTE base station according to the position updating request message and carries a rejection reason;
if the mobile terminal determines that the rejection reason is the same as the reason for rejecting the mobile terminal to perform the location update by the LTE pseudo base station, adding cell information under the LTE base station into a list of cells which are forbidden to be registered, and releasing Radio Resource Control (RRC) connection with the LTE base station according to the location update rejection message; wherein the cells in the list of cells prohibited from registering are denied access by the mobile terminal.
Optionally, the method further comprises: and when the mobile terminal is in a non-service or service unavailable state, searching the LTE cell preferentially, and after the LTE cell is searched, if the LTE cell searched currently is determined to be in the registration prohibition cell list, giving up accessing the LTE cell searched currently.
Optionally, the method further comprises: and after the mobile terminal receives the RRC connection release message which is sent by the LTE base station and carries the GSM cell information, if the GSM cell corresponding to the GSM cell information is determined to be an illegal cell, the mobile terminal gives up accessing the GSM cell.
Optionally, the mobile terminal determines that the reject reason is the same as the reason for rejecting the mobile terminal to perform location update by the LTE pseudo base station, where: and the mobile terminal determines that the rejection reason value carried in the location updating rejection message is 12.
In a second aspect, a mobile terminal is provided, including:
the sending module is used for sending a position updating request message to the LTE base station which resides at present;
a receiving module, configured to receive a location update reject message carrying a reject reason and returned by the LTE base station according to the location update request message;
the processing module is used for adding the cell information under the LTE base station into a registration prohibition cell list and releasing RRC connection with the LTE base station according to the location update rejection message if the rejection reason is determined to be the same as the reason for rejecting the location update of the mobile terminal by the LTE pseudo base station; wherein the cells in the list of cells prohibited from registration are denied access by the mobile terminal.
Optionally, the processing module is further configured to: and when the mobile terminal is in a non-service or service-unavailable state, searching the LTE cell preferentially, and after the LTE cell is searched, if the LTE cell which is searched currently is located in the registration-prohibited cell list, giving up accessing the LTE cell which is searched currently.
Optionally, the receiving module is further configured to receive an RRC connection release message that is sent by the LTE base station and carries GSM cell information; the processing module is further configured to give up accessing the GSM cell if it is determined that the GSM cell corresponding to the GSM cell information is an illegal cell.
Optionally, the processing module is specifically configured to: determining that the reject reason is the same as the reason for rejecting the mobile terminal to perform the location update by the LTE pseudo base station under the following conditions: and determining that the reject reason value carried in the location updating reject message is 12.
In a third aspect, a mobile terminal is provided, including: a processor, a memory, and a transceiver;
the transceiver for transceiving information under control of the processor;
the memory to store computer instructions;
the processor, coupled with the memory and the transceiver, configured to execute the computer instructions to implement the method of any of the first aspects described above.
In a fourth aspect, there is provided a computer readable storage medium storing computer instructions which, when executed by a processor, implement the method of any of the first aspects described above.
In the embodiment of the application, the mobile terminal sends the location update request message to the currently-resident LTE base station, and after receiving the location update rejection message carrying the rejection reason returned by the location update request message of the LTE base station, if it is determined that the rejection reason is the same as the reason for the LTE pseudo base station to reject the mobile terminal to perform location update, the base station has a risk of being a pseudo base station, so that the mobile terminal adds the cell information of the LTE base station to the registration-prohibited cell list to avoid subsequent access to the cell in the registration-prohibited cell list, thereby reducing the risk of accessing the pseudo base station, and avoiding a phenomenon that the mobile terminal cannot obtain service for a long time due to the pseudo base station repeatedly rejecting the mobile terminal to perform location update.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram illustrating an application scenario in an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a location update processing flow in the embodiment of the present application;
fig. 3 schematically shows a structure of a mobile terminal in an embodiment of the present application;
fig. 4 illustrates a schematic structural diagram of a mobile terminal in another embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the exemplary embodiments of the present application clearer, the technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.
All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments shown in the present application without inventive effort, shall fall within the scope of protection of the present application. Moreover, while the disclosure herein has been presented in terms of exemplary embodiment or embodiments, it is to be understood that each aspect of the disclosure can independently be implemented as a single unitary embodiment.
It should be understood that the terms "first," "second," "third," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used are interchangeable under appropriate circumstances and can, for example, be implemented in sequences other than those illustrated or otherwise described herein with reference to the embodiments of the application.
Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.
The term "module" as used herein refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware or/and software code that is capable of performing the functionality associated with that element.
Fig. 1 illustrates a communication scenario. As shown, if the LTE base station 10 and the GSM base station 20 are pseudo base stations, the signal transmission power of the LTE pseudo base station is generally high, and the cell switching threshold broadcasted in the system message is low. When themobile terminal 30 residing in the valid cell measures that the signal strength or quality of the current valid cell is lower than the set threshold, the mobile terminal starts to search for the neighboring LTE cell. Since the cell signal strength of the LTE pseudo base station adjacent to the valid cell is larger than the set threshold, themobile terminal 30 will be easily handed over or reselected to the cell of the LTE pseudo base station. Themobile terminal 30 initiates a Tracking Area Update (TAU) procedure in the cell where LTE is the base station to request an Update of the location of the mobile terminal in the network.
The LTE communication system, as a fourth generation mobile communication system, has high security, and the mobile terminal authenticates the network, so that an illegal LTE base station cannot directly obtain the trust of the terminal. Therefore, as a pseudo base station, the LTE base station 10 REJECTs the TAU request transmitted from the mobile terminal, and carries a cause value (REJECT cause # 12) in a LOCATION update REJECT message (LOCATION update REJECT message) transmitted to themobile terminal 30 to indicate that the Tracking Area is not allowed (Tracking Area not allowed) by using the specification of the 3GPP protocol. According to the specification of 3gpp TS 24.301, the terminal enters a location update reject state after receiving the location update reject message, and according to the reject cause value, themobile terminal 30 enters a limited service state, and adds the cell information of the LTE pseudo base station to a list of "forbidden location areas for regional provision of service" (service).
The LTE pseudo base station 10 releases a Radio Resource Control (RRC) connection with themobile terminal 30. And the RRC connection release message sent to themobile terminal 30 carries the cell frequency point information of the GSM pseudo base station, so that themobile terminal 30 performs cell search according to the cell frequency point information and accesses the cell of the GSM pseudo base station.
The GSM system can only judge the validity of the mobile terminal by the network, and the terminal cannot identify the validity of the network. Therefore, after connecting to the GSM pseudo base station 20, theMobile terminal 30 can receive a Request such as a call or a short message sent by the GSM pseudo base station, and can upload an International Mobile Subscriber Identity (IMSI) or an International Mobile Equipment Identity (IMEI) on the SIM card to the GSM pseudo base station by a Location Update Request (Location Update Request) or an Identity Request (Identity Request). According to the information, the GSM pseudo base station can acquire key information such as a telephone number of themobile terminal 30, and further perform illegal actions, such as influencing normal conversation and surfing of the user, sending an advertisement short message to the user, acquiring a mobile phone number of the user, sending a false connection, and deceiving the user to input an account password, a verification code, and the like.
After the RRC connection is released between themobile terminal 30 and the GSM pseudo base station, according to the current 3GPP protocol, themobile terminal 30 tries to camp in the cell of the LTE base station 10 that was previously rejected to perform location update, but according to the above description, since the LTE base station 10 is a pseudo base station, the mobile terminal is also rejected to perform location update, which causes themobile terminal 30 to lose network repeatedly or to have no service for a long time.
The method and the device for identifying the LTE pseudo base station are used for identifying the LTE pseudo base station based on the special behaviors of the LTE pseudo base station, optimizing the processing flow of the mobile terminal under the condition that the LTE base station refuses the mobile terminal to carry out position updating so as to reduce the phenomenon that the mobile terminal stays in the LTE base station again, thereby reducing the safety risk brought by the fact that the LTE base station is the pseudo base station, and avoiding the phenomenon that the mobile terminal loses network repeatedly or has no service for a long time when the LTE base station is the pseudo base station.
The "mobile terminal" in the embodiment of the present application, also referred to as User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, for example, a handheld device, a vehicle-mounted device, etc. with a wireless connection function. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.
The embodiments of the present application will be described below with reference to the accompanying drawings.
Fig. 2 is a schematic flowchart illustrating a location update processing method provided in an embodiment of the present application, where as shown in the figure, the process may include the following steps:
s201 the mobile terminal sends a location update request message to the LTE base station currently camped on to request for location update.
In some scenarios, when the mobile terminal measures that the signal strength or quality of the current cell is lower than a set threshold, the mobile terminal starts to search for a neighboring LTE cell. If the adjacent target LTE cell is searched and the signal strength or quality of the target LTE cell is higher than the set threshold value, the mobile terminal reselects the target LTE cell and initiates a TAU process in the target LTE cell to request to update the position of the mobile terminal in the network.
S202: and after receiving the location updating request message, the LTE base station sends a location updating rejection message to the mobile terminal, wherein the rejection reason is carried.
In this step, the LTE base station may reject the location update request of the mobile terminal for a variety of different reasons.
For example, one of the cases is: and if the LTE base station is a pseudo base station, rejecting the LOCATION update of the mobile terminal, and sending a LOCATION update REJECT (LOCATION update REJECT) message to the mobile terminal, wherein the message carries a REJECT reason value of 12 and indicates that the Tracking Area is not allowed (Tracking Area not allowed).
For another example, the LTE bs may also reject the location update request of the mobile terminal because Roaming is not allowed in the tracking area (Roaming not allowed in this tracking area), and return a location update reject message with a reject cause value of 13.
S203: and the mobile terminal executes corresponding operation according to the rejection reason carried in the location updating rejection message. If the mobile terminal determines that the reason for rejecting the position update is the same as the reason for rejecting the position update of the mobile terminal by the LTE pseudo base station, the cell information under the LTE base station is added into the list of the cell which is forbidden to register.
In this step, different reject reasons may correspond to different operations, and the mobile terminal may perform the corresponding operations according to the reject reason value carried in the location update reject message.
For example, if the reject cause value is 12, the mobile terminal adds the cell information under the LTE base station to the registration prohibited cell list. One or more cells may be included in the list and the mobile terminal will deny access to the cells in the list. Optionally, the cell information in the list may be a cell identifier or a cell frequency point or other information that can be used to identify a cell.
For another example, if the reject cause value is 13, the mobile terminal re-enters the network selection procedure and adds the current cell information to a "forbidden roaming location areas (roaming)" list.
Optionally, in a case that it is determined that the reason for rejecting is the same as the reason for rejecting the location update by the LTE pseudo base station, the mobile terminal may further perform the following operations: setting an Evolved Packet System (EPS) state as no ROAMING ALLOWED (EU 3 ROAMING NOT ALLOWED), deleting all Globally Unique Temporary UE identities (GUTI), tracking Area Identifiers (TAI) of last registration, TAI lists, and eKSI (Key Set Identifier for E-UTRAN, E-UTRAN Key Set Identifier). The terminal may also delete the reset registration attempt counter.
It should be noted that, through statistical analysis, it is found that, when a current LTE pseudo base station requests a mobile terminal to perform location update, the location update request of the mobile terminal is rejected by using a reject reason corresponding to the reason value of 12, and therefore in this embodiment of the present application, when the mobile terminal determines that the reject reason value carried in a location update reject message sent by the LTE base station is 12, it is considered that the LTE base station is likely to be the LTE pseudo base station, and therefore, information of the currently camped LTE cell is added to the "registration prohibited cell list". In other possible cases, if it is found through statistical analysis that the LTE pseudo base station rejects the location update of the mobile terminal by using a rejection reason corresponding to another cause value (for convenience of description, referred to as a cause value X here) when the terminal requests the location update, correspondingly, when the mobile terminal determines that the rejection cause value carried in the location update rejection message sent by the LTE base station is X, it is considered that the LTE base station is likely to be the LTE pseudo base station, and therefore, the information of the currently camped LTE cell is added to the "registration prohibited cell list".
It should be noted that, in the embodiment of the present application, there is no limitation on the naming of the above "registration prohibited cell list", and the list may be a cell list newly added in the embodiment of the present application, or an original cell list.
S204: and releasing the RRC connection between the mobile terminal and the LTE base station.
In this step, after rejecting the location update request of the mobile terminal, the LTE base station sends an RRC Connection Release message to the mobile terminal, so that the RRC Connection is released between the terminal and the LTE base station.
Based on the above flow, in the case that the LTE base station is a pseudo base station, since statistical analysis shows that the reject cause value for the pseudo base station rejecting the mobile terminal to perform the location update request is generally 12, when the mobile terminal determines that the reject cause value carried in the location update reject message sent by the LET base station is 12, the LTE base station is considered to be possibly a pseudo base station, and therefore, information of the currently camped LTE cell is added to the "registration prohibited cell list" to avoid subsequent cell access under the LTE base station again, thereby reducing security risk, and also avoiding a phenomenon that the mobile terminal repeatedly loses network or is out of service for a long time due to the pseudo base station repeatedly rejecting the mobile terminal to perform location update.
In some scenarios, in the above procedure, the RRC connection release message sent by the LTE base station to the mobile terminal carries information of a GSM cell (for example, frequency point information of the GSM cell), and the procedure may further include the following steps:
s205: after receiving the RRC connection release message sent by the LTE base station, the mobile terminal performs cell search according to information (such as cell frequency points) of the GSM cell carried in the message, and accesses the GSM cell when a cell corresponding to the information of the GSM cell is searched.
Through the above S205, the LTE base station guides the mobile terminal to the designated GSM cell.
Based on the above flow, when the GSM base station is a pseudo base station, the GSM base station may want the mobile terminal to send a Request such as a call, a short message, and the like, and may also obtain the IMSI or IMEI on the SIM card of the mobile terminal through a message such as a Location Update Request (Location Update Request), an Identity identification (Identity Request) Request, and the like sent by the mobile terminal, and obtain key information such as a phone number of the mobile terminal according to the information, so as to further perform an illegal action.
After the GSM pseudo base station finishes sending the advertisement short message or acquires the information of the terminal SIM card, the GSM pseudo base station does not send any message to the mobile terminal. Once the system message is not received for a long time, the mobile terminal considers that the network has no response, enters a no-service state and restarts searching other networks. The GSM pseudo base station kicks the mobile terminal out of the network of the GSM pseudo base station in such a way, and frequency resources are reserved for the next access person.
In some embodiments of the present application, when the mobile terminal is in a state of no service or unavailable service (for example, service is displayed but internet access cannot be made), so as to perform cell search, an LTE cell (or a cell under an LTE base station) is preferentially searched, and after the LTE cell is searched, whether the currently searched LTE cell is in the list is determined according to the above "registration prohibited cell list", and if the currently searched LTE cell is in the list, access to the LTE cell is abandoned. In other embodiments of the present application, when the mobile terminal is in a state of no service or service unavailable, so as to perform cell search, the LTE cells outside the above "registration prohibited cell list" may be preferentially searched.
Through the method, on one hand, compared with the prior GSM cell search, the phenomenon that the mobile terminal is refused to be accessed again by the pseudo base station or has no service for a long time due to other reasons because the GSM base station is the pseudo base station can be avoided; on the other hand, as the coverage degree of the LTE system is better and better, compared with the prior GSM cell search, the time length of network search can be reduced by preferentially carrying out the LTE cell search; on the other hand, the mobile terminal gives up access to the LTE cells in the 'registration forbidden cell list', so that the risk of accessing the LTE pseudo base station can be reduced.
In order to further reduce the security risk brought by the pseudo base station, in some embodiments of the present application, after receiving an RRC connection release message that is sent by an LTE base station and carries GSM cell information, a mobile terminal may first determine whether a GSM cell corresponding to the GSM cell information is an illegal cell, and if it is determined that the GSM cell is an illegal cell, refuse to access the GSM cell.
The illegal GSM cell can be detected in advance, and the illegal GSM cell list can be sent to the mobile terminal, so that the mobile terminal can identify the illegal GSM cell according to the list. The embodiment of the application does not limit the detection method of the illegal GSM cell. In some embodiments, some information of the GSM cell may be statistically weighted, and since the GSM cell of the pseudo base station generally has some rules, the GSM cell with a score reaching a certain range may be determined as the pseudo base station cell after statistics of some information of the GSM cell.
Through the method, the mobile terminal searches the corresponding GSM cell according to the RRC connection release message which is sent by the LTE base station and carries the frequency point of the GSM cell, then the legality of the GSM cell is determined, if the cell is an illegal cell, the access is refused, and the LTE cell is searched until the legal LTE cell is searched and accessed, so that the time length of returning to the LTE network is further reduced, the situation that the user cannot use the mobile terminal for a long time due to the fact that the user resides in the current pseudo base station cell again can be ensured, and the risks of disturbance of advertisement short messages and information leakage can be avoided.
Based on the same technical concept, the embodiment of the present application further provides a mobile terminal, where the mobile terminal may perform the functions of the mobile terminal side in the foregoing embodiments.
Fig. 3 illustrates a schematic structural diagram of a mobile terminal provided in an embodiment of the present application, and as shown in the drawing, the mobile terminal may include: a sendingmodule 301, a receivingmodule 302, and aprocessing module 303.
A sendingmodule 301, configured to send a location update request message to a currently camped LTE base station;
areceiving module 302, configured to receive a location update reject message with a reject reason returned by the LTE base station according to the location update request message;
theprocessing module 303 is configured to add cell information of the LTE base station to a registration prohibited cell list if it is determined that the reject reason is the same as the reason why the LTE pseudo base station rejects the location update of the mobile terminal, and release RRC connection with the LTE base station according to the location update reject message; wherein the cells in the list of cells prohibited from registration are denied access by the mobile terminal.
Optionally, theprocessing module 303 is further configured to: and when the mobile terminal is in a non-service or service unavailable state, searching an LTE cell preferentially, and after the LTE cell is searched, if the LTE cell searched currently is determined to be positioned in the registration prohibition cell list, giving up accessing the LTE cell searched currently.
Optionally, the receivingmodule 302 is further configured to receive an RRC connection release message that is sent by the LTE base station and carries GSM cell information; theprocessing module 303 is further configured to, if it is determined that the GSM cell corresponding to the GSM cell information is an illegal cell, give up access to the GSM cell.
Optionally, theprocessing module 303 is specifically configured to: determining that the reject reason is the same as the reason for rejecting the mobile terminal to perform the location update by the LTE pseudo base station under the following conditions: determining that the rejection reason corresponding to the rejection reason value carried in the location update rejection message is not allowed because of the tracking area, for example, the rejection reason value is equal to 12.
The functions of the modules in the terminal may refer to the description of the functions implemented by the network device in the foregoing embodiments, and are not repeated here.
Based on the same technical concept, the embodiment of the present application further provides a mobile terminal, and the mobile terminal can implement the functions of the mobile terminal side in the foregoing embodiments.
Fig. 4 illustrates a schematic structural diagram of a mobile terminal in an embodiment of the present application. The mobile terminal may include: aprocessor 401, amemory 402, atransceiver 403, and abus interface 404.
Theprocessor 401 is responsible for managing the bus architecture and general processing, and thememory 402 may store data used by theprocessor 401 in performing operations. Thetransceiver 403 is used to receive and transmit data under the control of theprocessor 401.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented byprocessor 401, and various circuits, represented bymemory 402, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. Theprocessor 401 is responsible for managing the bus architecture and general processing, and thememory 402 may store data used by theprocessor 401 in performing operations.
The processes disclosed in the embodiments of the present application may be applied to theprocessor 401, or implemented by theprocessor 401. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in software form in theprocessor 401. Theprocessor 401 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in thememory 402, and theprocessor 401 reads the information in thememory 402 and completes the steps of the signal processing flow in combination with the hardware.
Specifically, theprocessor 401 is configured to read the computer instructions in thememory 402 and execute the functions implemented by the mobile terminal in the flowchart shown in fig. 2.
Based on the same technical concept, the embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the process performed in fig. 2.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. A location update processing method, comprising:
after a mobile terminal sends a position updating request message to a current resident Long Term Evolution (LTE) base station, receiving a position updating refusing message which is returned by the LTE base station according to the position updating request message and carries a refusing reason;
if the mobile terminal determines that the rejection reason is the same as the reason for rejecting the location update of the mobile terminal by the LTE pseudo base station, adding cell information under the LTE base station into a registration prohibition cell list, and releasing RRC connection between the mobile terminal and the LTE base station according to a received Radio Resource Control (RRC) connection release message sent by the LTE base station, wherein the cells in the registration prohibition cell list are rejected to be accessed by the mobile terminal;
when the RRC connection release message carries information of a GSM cell of a global system for mobile communication, if the mobile terminal determines that the GSM cell corresponding to the information of the GSM cell is an illegal cell, giving up access to the GSM cell, and continuing to search an LTE cell under an LTE base station until the searched LTE cell is a legal cell;
the mobile terminal may determine that the GSM cell corresponding to the GSM cell information is the illegal cell by:
the mobile terminal carries out statistical weighting on the GSM cell information to obtain the illegal score of the GSM cell;
and if the illegal score reaches a set range, the mobile terminal determines the GSM cell as the pseudo base station cell.
2. The method of claim 1, further comprising:
and when the mobile terminal is in a non-service or service unavailable state, searching the LTE cell preferentially, and after the LTE cell is searched, if the LTE cell searched currently is determined to be in the registration prohibition cell list, giving up accessing the LTE cell searched currently.
3. The method of any of claims 1-2, wherein the mobile terminal determines that the reason for rejection is the same as a reason for the LTE pseudo base station to reject the mobile terminal for location update if:
and the mobile terminal determines that the rejection reason corresponding to the rejection reason value carried in the location updating rejection message is not allowed because of the tracking area.
4. A mobile terminal, comprising:
the sending module is used for sending a position updating request message to a current resident Long Term Evolution (LTE) base station;
a receiving module, configured to receive a location update reject message carrying a reject reason and returned by the LTE base station according to the location update request message; receiving a Radio Resource Control (RRC) connection release message sent by the LTE base station;
the processing module is used for adding the cell information under the LTE base station into a list of cells forbidden to be registered if the rejection reason is determined to be the same as the reason for rejecting the position update of the mobile terminal by the LTE pseudo base station, and releasing the RRC connection between the LTE pseudo base station and the cell information under the LTE base station according to the RRC connection release message; wherein the cells in the list of the cell forbidden to be registered are refused to be accessed by the mobile terminal; when the RRC connection release message carries information of a GSM cell of a global system for mobile communication, if the mobile terminal determines that the GSM cell corresponding to the information of the GSM cell is an illegal cell, giving up access to the GSM cell, and continuing to search an LTE cell under an LTE base station until the searched LTE cell is a legal cell;
the mobile terminal may determine that the GSM cell corresponding to the GSM cell information is the illegal cell by:
the mobile terminal carries out statistical weighting on the GSM cell information to obtain the illegal score of the GSM cell;
and if the illegal score reaches a set range, the mobile terminal determines the GSM cell as the pseudo base station cell.
5. The mobile terminal of claim 4, wherein the processing module is further configured to:
and when the mobile terminal is in a non-service or service unavailable state, searching an LTE cell preferentially, and after the LTE cell is searched, if the LTE cell searched currently is determined to be positioned in the registration prohibition cell list, giving up accessing the LTE cell searched currently.
6. The mobile terminal of claim 4, wherein the processing module is specifically configured to:
determining that the reject reason is the same as the reason for rejecting the location update of the mobile terminal by the LTE pseudo base station under the following conditions: and determining that the rejection reason corresponding to the rejection reason value carried in the location updating rejection message is not allowed because of the tracking area.
7. A mobile terminal, comprising: a processor, a memory, and a transceiver;
the transceiver for transceiving information under control of the processor;
the memory to store computer instructions;
the processor coupled with the memory and the transceiver, the processor configured to execute the computer instructions to implement the method of any of claims 1-3.
8. A computer-readable storage medium, characterized in that the storage medium stores computer instructions which, when executed by a processor, implement the method of any one of claims 1 to 3.
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