CN113766486A - Method and equipment for correcting attribution public land mobile network identification - Google Patents

Method and equipment for correcting attribution public land mobile network identification Download PDF

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Publication number
CN113766486A
CN113766486A CN202111117169.1A CN202111117169A CN113766486A CN 113766486 A CN113766486 A CN 113766486A CN 202111117169 A CN202111117169 A CN 202111117169A CN 113766486 A CN113766486 A CN 113766486A
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mnc
hplmn
plmn
length
determining
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CN113766486B (en
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倪金金
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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Priority to PCT/CN2022/117926 priority patent/WO2023045776A1/en
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    • 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
    • H04W8/186—Processing of subscriber group data

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Abstract

The embodiment of the application provides a method and equipment for correcting a home public land mobile network identifier, wherein the method comprises the following steps: after the UE is started, acquiring MNC length indication information of the HPLMN in the SIM card; when the MNC length indication information is invalid, acquiring the first two digits and the MCC of the MNC corresponding to the HPLMN, acquiring the PLMN stored in a memory and/or an SIM card of the UE, and determining a first PLMN of which the first two digits of the MCC and the MNC in each PLMN are the same as the HPLMN; and determining the HPLMN identifier corresponding to the HPLMN according to the MNC length of the first PLMN. In the embodiment of the application, when the MNC length indication information of the HPLMN is invalid, the effective length of the MNC in the HPLMN identifier can be corrected according to the existing PLMN information, so that the UE can accurately acquire the HPLMN identifier.

Description

Method and equipment for correcting attribution public land mobile network identification
Technical Field
The embodiment of the application relates to the technical field of mobile communication, in particular to a method and equipment for correcting a Home public land mobile network (Home PLMN, HPLMN for short) identifier.
Background
In a Mobile communication system, a User Equipment (User Equipment, UE for short) needs to obtain an HPLMN identifier from an International Mobile Subscriber Identity (IMSI) of a Subscriber Identity Module (SIM) card in some specific scenarios.
The HPLMN identification (also known as HPLMN ID) contains the Mobile Country code (Mobi)le Country Code, MCC) and Mobile Network Code (MNC), wherein the length of the MCC is fixed to 3 digits (the effective value is 0-9); the effective length of the MNC is 2 digits or 3 digits, the third digit MNC3 of the MNC is 0xF when the effective length of the MNC is 2 digits, and the MNC3 is a number from 0 to 9 when the effective length of the MNC is 3 digits. Wherein the effective length of the MNC is 2 bits or 3 bits, usually according to the SIM card EFADThe MNC length indication of the HPLMN in the file.
However, in practical applications, the SIM card EFADThe MNC length indication information of the HPLMN in the file may be missing or wrong, which may cause the UE to not obtain an accurate HPLMN identifier, and further cause the UE to make a mistake in some scenarios where the HPLMN identifier needs to be used.
Disclosure of Invention
The embodiment of the application provides a method and equipment for correcting an HPLMN identifier, which can solve the problem that the current SIM card EF is used in the prior artADWhen the MNC length indication information of the HPLMN in the file is missing or wrong, the UE may not be able to accurately acquire the HPLMN identification.
In a first aspect, an embodiment of the present application provides a method for correcting an HPLMN identifier, where the method includes:
after the UE is started, acquiring MNC length indication information of an HPLMN in an SIM card, and determining whether the MNC length indication information is valid;
when the MNC length indication information is invalid, acquiring the first two digits and the MCC of the MNC corresponding to the HPLMN, acquiring the PLMN stored in a memory of the UE and/or the SIM card, and determining the first two digits and the MCC of the MNC in each PLMN and a first PLMN of which the MCC is the same as the HPLMN;
and determining the HPLMN identifier corresponding to the HPLMN according to the MNC length of the first PLMN.
In a possible implementation manner, the obtaining MNC length indication information of the HPLMN in the SIM card and determining whether the MNC length indication information is valid includes:
obtaining EF in SIM cardADFile, determining the EFADThe MNC length in the file indicates whether bytes are missing;
when the MNC length indication byte is not missing and the MNC length indicated by the MNC length indication byte is correct, determining that the MNC length indication information is valid;
and when the MNC length indication byte is missing or the MNC length indication byte is not missing and the MNC length indicated by the MNC length indication byte is wrong, determining that the MNC length indication information is invalid.
In a possible implementation manner, the determining, according to the MNC length of the first PLMN, an HPLMN identifier corresponding to the HPLMN includes:
when the length of the MNC of each first PLMN is 2 bits, determining that the effective length of the MNC of the HPLMN identifier is 2 bits, and setting the third bit of the MNC in the HPLMN identifier to be 0 xF;
and when the MNC length of each first PLMN is 3 digits, determining that the MNC effective length of the HPLMN identifier is 3 digits, and determining the value of the third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card.
In a possible implementation manner, the determining, according to the MNC length of the first PLMN, an HPLMN identifier corresponding to the HPLMN includes:
when the length of the MNC of one part of the first PLMN is 2 digits and the length of the MNC of the other part of the first PLMN is 3 digits, determining a first target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card;
if the first target value is the same as the third bit of the MNC of any one first PLMN, determining that the effective length of the MNC of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as the first target value;
and if the first target value is different from the third bit of the MNC of each first PLMN, determining that the effective length of the MNC of the HPLMN identifier is 2 bits, and setting the third bit of the MNC in the HPLMN identifier as 0 xF.
In a possible implementation manner, after acquiring the PLMNs stored in the UE and/or the SIM card, the method further includes:
if the first PLMN does not exist in the PLMNs, the effective length of the MNC of the HPLMN identifier is determined to be 2 bits, and the third bit of the MNC in the HPLMN identifier is set to be 0 xF.
In a possible implementation manner, after determining the HPLMN identifier corresponding to the HPLMN, the method further includes:
after the UE finds out each PLMN to be selected corresponding to the current network environment, if the MNC length indication information is invalid and the MNC effective length of the HPLMN identifier which is determined currently is 2 bits, whether a second PLMN with the first two bits of MCC and MNC which are the same as the HPLMN exists in each PLMN to be selected or not is determined;
when the second PLMN exists and the MNC length of each second PLMN is 2 bits, keeping the MNC in the HPLMN identifier unchanged;
when the second PLMN with the MNC length of 3 digits exists, determining a second target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card; if the second target value is the same as the third bit value of the MNC of any one second PLMN, determining that the effective length of the MNC of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as the second target value; and if the second target value is different from the third bit of the MNC of each second PLMN, keeping the MNC in the HPLMN identifier unchanged.
In a possible implementation manner, after determining the HPLMN identifier corresponding to the HPLMN, the method further includes:
after the UE finds out each PLMN to be selected corresponding to the current network environment, if the MNC length indication information is effective and the MNC length indication information indicates that the MNC effective length of the HPLMN identifier is 2 bits, determining whether a third PLMN with the first two bits of MCC and MNC identical to the HPLMN exists in each PLMN to be selected;
when the third PLMN exists and the effective length of the MNC of each third PLMN is 3 digits, determining a third target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card, if the third target value is the same as the third digit of the MNC of any one third PLMN, determining that the effective length of the MNC in the HPLMN identifier is 3 digits, and setting the third digit of the MNC in the HPLMN identifier as the third target value;
keeping the MNC in the HPLMN identity unchanged when the third PLMN is not present.
In a second aspect, an embodiment of the present application provides an apparatus for correcting a home public land mobile network identifier, where the apparatus includes:
the judging module is used for acquiring MNC length indicating information of the HPLMN in the SIM card after the UE is started and determining whether the MNC length indicating information is effective or not;
the searching module is used for acquiring the first two digits of the MNC and the MCC corresponding to the HPLMN when the MNC length indication information is invalid, acquiring the PLMN stored in the memory of the UE and/or the SIM card, and determining the first two digits of the MNC and the first PLMN of which the MCC is the same as the HPLMN in each PLMN;
and the processing module is used for determining the HPLMN identifier corresponding to the HPLMN according to the MNC length of the first PLMN.
In a third aspect, an embodiment of the present application provides a user equipment, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the memory stored computer-executable instructions causes the at least one processor to perform the method of correcting the HPLMN identification as provided in the first aspect.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the method for correcting the HPLMN identifier as provided in the first aspect is implemented.
In a fifth aspect, an embodiment of the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for correcting the HPLMN identifier as provided in the first aspect is implemented.
The method and the device for correcting the HPLMN identifier provided by the embodiment of the application are used as the EF (identity factor function) of the SIM cardADMNC length indication information of HPLMN in file is lackedAnd when the error or the error occurs, the effective length of the MNC in the HPLMN identifier can be corrected according to the existing PLMN information, so that the UE can accurately acquire the HPLMN identifier.
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 of the present application or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a block diagram of a wireless communication system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for correcting an HPLMN identifier provided in an embodiment of the present application;
fig. 3 is a schematic flow chart of another HPLMN identifier correction method provided in the embodiment of the present application;
fig. 4 is a schematic flowchart of another HPLMN identifier correction method provided in the embodiment of the present application;
FIG. 5 is a schematic diagram of program modules of a device for correcting the HPLMN identifier provided in an embodiment of the present application;
fig. 6 is a schematic hardware structure diagram of a user equipment provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.
It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.
The terms "first," "second," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Furthermore, the terms "comprises" and "comprising," and 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 and/or software code that is capable of performing the functionality associated with that element.
The embodiment of the application can be applied to various communication systems, such as: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a Long Term Evolution (Long Term Evolution, LTE) System, an Advanced Long Term Evolution (LTE-a) System, a New Radio (NR) System, an Evolution System of an NR System, an LTE (LTE-based Access to unlicensed spectrum, LTE-U) System on an unlicensed spectrum, an NR (NR-based Access to unlicensed spectrum, NR-U) System on an unlicensed spectrum, a Universal Mobile Telecommunications System (UMTS) System, and the like.
Referring to fig. 1, fig. 1 is a schematic diagram of an architecture of a wireless communication system according to an embodiment of the present disclosure. The wireless communication system provided by the present embodiment includes a UE101 and a network device 102.
Alternatively, the UE101 may be various forms of user equipment, access terminal, subscriber unit, subscriber station, Mobile Station (MS), remote station, remote terminal, mobile device, terminal device (terminal equipment), wireless communication device, user agent, or user device. The UE may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment as long as the UE101 can wirelessly communicate with the Network device 102.
The Network device 102, i.e. a public mobile communication Network device, is an interface device for the UE101 to Access the internet, and is also a form of a Radio Station, and refers to a Radio transceiver Station for performing information transmission with the UE101 in a certain Radio coverage area, and includes a Base Station (BS), which may also be referred to as a Base Station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, devices that provide Base Station functionality in 2G networks include Base Transceiver Stations (BTSs), devices that provide Base Station functionality in 3G networks include node bs (nodebs), apparatuses for providing a base station function in a 4G network include evolved node bs (enbs), which, in a Wireless Local Area Network (WLAN), the devices providing the base station function are Access points (AP for short), the devices gNB providing the base station function in the 5G NR, and the node B (ng-eNB) continuing the evolution, the gNB and the UE communicate with each other by adopting an NR (noise reduction) technology, the ng-eNB and the UE communicate with each other by adopting an Evolved Universal Terrestrial Radio Access (E-UTRA) technology, and both the gNB and the ng-eNB can be connected to a 5G core network. The network device 102 in the embodiment of the present application also includes a device that provides a base station function in a future new communication system, and the like.
In a mobile communication system, a Public Land Mobile Network (PLMN) refers to a network established and operated by a network operator to provide a terrestrial mobile communication service to the public. When the PLMN accessed by the UE is inconsistent with the corresponding PLMN in the SIM card, the UE generally performs reselection in a network reselection manner. For example, the mobile terminal may search for the HPLMN identifier according to information pre-stored in the SIM card.
The HPLMN identifier usually comprises two parts of MCC and MNC, wherein the length of the MCC is fixed to 3 digits (the effective value is 0-9); the effective length of the MNC is 2 or 3 bits, the value of the third bit MNC3 of the MNC is 0xF when the effective length of the MNC is 2 bits, and the value of the MNC3 is a number from 0 to 9 when the effective length of the MNC is 3 bits. For example, the MNC effective length of a certain HPLMN is 2 bits, the MCC is 460, and the first two bits of the MNC are both 0, so that the HPLMN identifier corresponding to the HPLMN is 46000F; the MNC effective length of a certain HPLMN is 3 bits, the MCC 3 bits is 310, the MNC3 bits is 016, and it corresponds to HPLMN identification 310016.
In some embodiments, whether the MNC has an effective length of 2 bits or 3 bits is generally determined according to an Elementary File (EF) pre-stored in the SIM card.
Specifically, the effective length of the MNC may be 2 bits or 3 bits according to the EF pre-stored in the SIM cardADThe MNC length indication of the HPLMN in the file. Wherein, EFADThe file is an administerive Data file in the SIM card, indicating some information corresponding to the current SIM card, where the 4th byte is used to indicate the effective length of the MNC in the IMSI.
In practical applications, the EF mentioned aboveADThe MNC length indication information of the HPLMN in the file may be missing or wrong, which may result in that the UE cannot acquire the MNC length indication informationThe accurate HPLMN identifier further causes the UE to have an error in some scenarios that need to use the HPLMN identifier, such as network selection, air interface interaction, NV configuration file loading, and the like.
In order to solve the above technical problem, an embodiment of the present application provides a method for correcting an HPLMN identifier, when an SIM card EFADWhen the MNC length indication information of the HPLMN in the file is missing or wrong, the effective length of the MNC in the HPLMN identification can be corrected according to the existing PLMN information, and therefore the UE can accurately acquire the HPLMN identification. The following examples are given for illustrative purposes.
Referring to fig. 2, fig. 2 is a schematic flowchart of a method for correcting an HPLMN identifier provided in an embodiment of the present application. In one possible embodiment, the method includes:
s201, after the UE is started, MNC length indicating information of the HPLMN in the SIM card is obtained, and whether the MNC length indicating information is valid or not is determined.
In one possible implementation, after the UE is powered on, the EF in the SIM card is acquiredADFile, determining the EFADThe MNC length in the file indicates whether bytes are missing; when the MNC length indication byte is not missing and the MNC length indicated by the MNC length indication byte is correct (indicating number 2 or 3), determining that the MNC length indication information is valid; when the MNC length indication byte is missing, or the MNC length indication byte is not missing, but the MNC length indicated by the MNC length indication byte is incorrect (the indication number is neither 2 nor 3), it is determined that the MNC length indication information is invalid.
Wherein, the MNC length indication byte is EFADByte 4 in the file to indicate the effective length of the MNC.
The SIM card is also called a user identification card or a smart card, and is a communication module provided by a network operator to a user according to a request of the user, so that the network user can use data and a communication circuit on the SIM card to implement network communication with an operator network, thereby implementing network communication service application of the terminal device.
It should be noted that the SIM card may include SIM cards of various specifications and standards, and is not limited in the embodiment of the present application as long as the user can be identified according to the information of the SIM card.
For example, the SIM card may be a common SIM card, or may also be a Universal Subscriber Identity Module (USIM card); in terms of card size, the SIM card may be a standard SIM card with a size of 25mm × 15mm, a small SIM card with a size of 12mmx15mm (i.e., Micro SIM), or a Micro SIM card with a size of 12mmx9mm (i.e., Nano SIM).
In the supported network mode, the SIM card may be a SIM card applied to a second generation mobile communication technology (2nd generation, 2G) network, a SIM card (e.g., USIM card) applied to a third generation mobile communication technology (3rd generation, 3G) network, a SIM card applied to a fourth generation mobile communication technology (4th generation, 4G) network, or a SIM card applied to a fifth generation mobile communication technology (5th generation, 5G) network.
S202, when the MNC length indication information is invalid, the first two digits and the MCC of the MNC corresponding to the HPLMN are obtained, the PLMN stored in a memory and/or an SIM card of the UE is obtained, and the first two digits and the MCC of the MNC in each PLMN are determined to be the same as the first PLMN of the HPLMN.
In a possible embodiment, after determining that the MNC length indication information is invalid, the three digits of the MCC and the first two digits of the MNC of the HPLMN are obtained from the IMSI of the SIM card. And then acquiring the PLMN in the NV file stored in the memory of the UE and/or the PLMN stored in the SIM card.
Illustratively, the PLMN includes at least one of the following types:
RPLMN (Registered PLMN), PLMN Registered by the UE before last power-off or network disconnection.
EPLMN (Equivalent PLMN), a PLMN that is co-located with the PLMN currently selected by the UE.
EHPLMN (Equivalent Home PLMN), a Home PLMN that is co-located with the PLMN currently selected by the UE.
UPLMN (User Controlled PLMN), parameters for PLMN selection stored on USIM card.
OPLMN (Operator Controlled PLMN), a PLMN selection related parameter stored on USIM card.
FPLMN (Forbidden PLMN), PLMN that is Forbidden to access, UE typically adds it to this list after a UE is denied trying to access a certain PLMN.
After obtaining the PLMNs stored in the memory and/or the SIM card of the UE, determining a first PLMN in which the first two digits of the MNC and the MCC of the PLMN are the same as the first two digits of the MNC and the MCC corresponding to the HPLMN.
For example, if the MCC of the HPLMN is 460 and the first two digits of the MNC are 00, if the obtained MCC of a certain PLMN is 460 and the first two digits of the MNC are 00, the PLMN may be determined to be the first PLMN.
S203, determining the HPLMN identification corresponding to the HPLMN according to the MNC length of the first PLMN.
In a possible implementation manner, after the first PLMN is determined, the effective length of the MNC corresponding to the HPLMN may be determined according to the MNC length of the first PLMN, so as to determine the HPLMN identifier corresponding to the HPLMN.
The method and the device for correcting the HPLMN identifier provided by the embodiment of the application are used as the EF (identity factor function) of the SIM cardADWhen the MNC length indication information of the HPLMN in the file is missing or wrong, the effective length of the MNC in the HPLMN identification can be corrected according to the existing PLMN information, and therefore the UE can accurately acquire the HPLMN identification.
Based on the contents of the foregoing embodiments, referring to fig. 3, fig. 3 is a schematic flow chart of another HPLMN identifier correction method provided in the embodiments of the present application. In one possible embodiment, the method includes:
s301, when the UE is started, the MNC length indication information of the HPLMN in the SIM card is obtained, and whether the MNC length indication information is valid or not is determined.
S302, when the MNC length indication information is invalid, the first two digits and the MCC of the MNC corresponding to the HPLMN are acquired, and the PLMN stored in the memory and/or the SIM card of the UE is acquired.
S303, judging whether the first two digits of the MNC and the first PLMN of which the MCC is the same as the HPLMN exist in each PLMN. If yes, continuing to execute S304; if not, go to step S308.
S304, the MNC length of each first PLMN is determined. If the MNC length of each first PLMN is 2 bits, then S308 is executed; if the MNC length of each first PLMN is 3 bits, then S305 is performed; if there is a part of the first PLMN having an MNC length of 2 bits and another part of the first PLMN having an MNC length of 3 bits, then S306 and S307 are performed.
S305, determining that the effective length of the MNC of the HPLMN identifier is 3 digits, and determining the value of the third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card.
S306, determining a first target value of the third bit of the MNC in the HPLMN identification according to the IMSI of the SIM card.
S307, determining whether the first target value is the same as the third bit of the MNC of any one of the first PLMNs. If the first target value is different from the third bit of the MNC of each first PLMN, S308 is executed; if the first target value is the same as the third bit of the MNC of any one of the first PLMNs, S309 is performed.
S308, the effective length of the MNC of the HPLMN identifier is determined to be 2 bits, and the third bit of the MNC in the HPLMN identifier is set to be 0 xF.
S309, determining that the MNC effective length of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as the first target value.
The method and the device for correcting the HPLMN identifier provided by the embodiment of the application are used as the EF (identity factor function) of the SIM cardADWhen the MNC length indication information of the HPLMN in the file is missing or wrong, the PLMN stored in the UE and/or the SIM card can be obtained, then the first two digits of the MNC in each PLMN and the first PLMN with the MCC being the same as the HPLMN are determined, and the effective length of the MNC in the HPLMN identifier corresponding to the HPLMN can be accurately determined according to the MNC length of the first PLMN, so that the UE can accurately obtain the HPLMN identifier.
Based on the contents of the foregoing embodiments, referring to fig. 4, fig. 4 is a schematic flow chart of another HPLMN identifier correction method provided in the embodiments of the present application. In one possible embodiment, the method includes:
s401, the UE finds out all PLMNs to be selected corresponding to the current network environment.
In a feasible implementation manner, when the UE triggers the network selection procedure, the access layer reports PLMNs found in the current environment, and the PLMNs are to-be-selected PLMNs of the UE.
S402, determining whether the MNC length indication information of the HPLMN is valid. If not, S403 continues to be executed, and if yes, S4010 to S4016 are executed.
And S403, determining the MNC effective length of the currently determined HPLMN identifier. If the MNC effective length of the currently determined HPLMN identifier is 2 bits, S404 continues to be executed; if the MNC effective length of the currently determined HPLMN identifier is 3 bits, S409 is performed.
S404, whether a second PLMN with the first two digits of MCC and MNC being the same as the HPLMN exists in each PLMN to be selected is determined. If yes, continuing to execute S405; if not, S409 is executed.
S405, the MNC length of each second PLMN is determined. If the MNC length of each second PLMN is 2 bits, then S409 is performed; if there is a second PLMN with MNC length of 3 bits, S406 and S407 are continued.
S406, determining a second target value of the third bit of the MNC in the HPLMN identification according to the IMSI of the SIM card.
S407, determining whether the second target value is the same as the third bit of the MNC of any one of the second PLMNs. If yes, continue to execute S408; if not, S409 is executed.
S408, determining that the MNC effective length of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as a second target value.
S409, keeping the MNC in the HPLMN identification unchanged.
S4010, the MNC effective length of the currently determined HPLMN identifier is determined. If the MNC effective length of the currently determined HPLMN identifier is 2 bits, S4011 is continuously executed; if the MNC effective length of the currently determined HPLMN identifier is 3 bits, S4016 is performed.
S4011, determining whether a third PLMN with the first two digits of MCC and MNC being the same as the HPLMN exists in each PLMN to be selected. If yes, continuing to execute S4012; if not, go to S4016.
S4012, determining the MNC length of each third PLMN. If the MNC length of each third PLMN is 3 bits, S4013 is continuously performed; if there is a third PLMN with MNC length of 2 bits, S4016 is performed.
S4013, determining a third target value of the third digit of the MNC in the HPLMN identification according to the IMSI of the SIM card.
S4014, determining whether the third target value is the same as the third bit of the MNC of any third PLMN. If yes, continue to execute S4015; if not, go to S4016.
S4015, the effective length of MNC of the HPLMN identifier is determined to be 3 bits, and the third bit of MNC in the HPLMN identifier is set as a third target value.
S4016, keeping MNC in HPLMN identification unchanged.
In the HPLMN identifier correction method provided in the embodiment of the present application, the UE may be located in the SIM card EFADAnd under the condition that MNC length indication bytes of the HPLMN in the file are missing or indication errors, automatically correcting the MNC effective length in the HPLMN, thereby ensuring that the UE can acquire the correct HPLMN and avoiding errors of subsequent functions and services of the UE.
Based on the content described in the foregoing embodiments, an apparatus for correcting an HPLMN identifier is also provided in the embodiments of the present application. Referring to fig. 5, fig. 5 is a first schematic program module diagram of a HPLMN identifier modification apparatus provided in an embodiment of the present application, where the HPLMN identifier modification apparatus includes:
the determining module 501 is configured to, after the UE is powered on, obtain MNC length indication information of the HPLMN in the SIM card, and determine whether the MNC length indication information is valid.
The searching module 502 is configured to, when the MNC length indication information is invalid, obtain the first two digits and the MCC of the MNC corresponding to the HPLMN, obtain the PLMN stored in the memory of the UE and/or the SIM card, and determine the first two digits and the MCC of the MNC in each PLMN as well as the first PLMN which is the same as the HPLMN.
A processing module 503, configured to determine, according to the MNC length of the first PLMN, an HPLMN identifier corresponding to the HPLMN.
The embodiments of the present applicationThe correction method and device of the provided HPLMN identification is used as the EF of the SIM cardADWhen the MNC length indication information of the HPLMN in the file is missing or wrong, the effective length of the MNC in the HPLMN identification can be corrected according to the existing PLMN information, and therefore the UE can accurately acquire the HPLMN identification.
In a possible implementation, the determining module 501 is specifically configured to:
obtaining EF in SIM cardADFile, determining the EFADThe MNC length of the HPLMN in the file indicates whether bytes are missing.
When the MNC length indication byte is not missing and the MNC length indicated by the MNC length indication byte is correct, determining that the MNC length indication information is valid.
And when the MNC length indication byte is missing or the MNC length indication byte is not missing and the MNC length indicated by the MNC length indication byte is wrong, determining that the MNC length indication information is invalid.
In a possible implementation, the processing module 503 is specifically configured to:
and when the length of the MNC of each first PLMN is 2 bits, determining that the effective length of the MNC of the HPLMN identifier is 2 bits, and setting the third bit of the MNC in the HPLMN identifier to be 0 xF.
And when the MNC length of each first PLMN is 3 digits, determining that the MNC effective length of the HPLMN identifier is 3 digits, and determining the value of the third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card.
In a possible implementation, the processing module 503 is further specifically configured to:
and when the MNC length of one part of the first PLMN is 2 digits and the MNC length of the other part of the first PLMN is 3 digits, determining a first target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card.
And if the first target value is the same as the third bit of the MNC of any one first PLMN, determining that the effective length of the MNC of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as the first target value.
And if the first target value is different from the third bit of the MNC of each first PLMN, determining that the effective length of the MNC of the HPLMN identifier is 2 bits, and setting the third bit of the MNC in the HPLMN identifier as 0 xF.
In a possible implementation, the processing module 503 is further specifically configured to:
if the first PLMN does not exist in the PLMNs, the effective length of the MNC of the HPLMN identifier is determined to be 2 bits, and the third bit of the MNC in the HPLMN identifier is set to be 0 xF.
In a possible implementation, the processing module 503 is further specifically configured to:
after the UE finds out each PLMN to be selected corresponding to the current network environment, if the MNC length indication information is invalid and the MNC effective length of the HPLMN identifier which is determined currently is 2 bits, whether a second PLMN with the first two bits of MCC and MNC which are the same as the HPLMN exists in each PLMN to be selected or not is determined.
And when the second PLMN exists and the MNC length of each second PLMN is 2 bits, keeping the MNC in the HPLMN identifier unchanged.
When the second PLMN with the MNC length of 3 digits exists, determining a second target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card; if the second target value is the same as the third bit value of the MNC of any one second PLMN, determining that the effective length of the MNC of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as the second target value; and if the second target value is different from the third bit of the MNC of each second PLMN, keeping the MNC in the HPLMN identifier unchanged.
In a possible implementation, the processing module 503 is further specifically configured to:
after the UE finds out each PLMN to be selected corresponding to the current network environment, if the MNC length indication information is valid and the MNC length indication information indicates that the MNC effective length of the HPLMN identifier is 2 bits, whether a third PLMN with the first two bits of MCC and MNC identical to the HPLMN exists in each PLMN to be selected or not is determined.
And when the third PLMN exists and the effective length of the MNC of each third PLMN is 3 digits, determining a third target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card, if the third target value is the same as the third digit of the MNC of any one third PLMN, determining that the effective length of the MNC of the HPLMN identifier is 3 digits, and setting the third digit of the MNC in the HPLMN identifier as the third target value.
Keeping the MNC in the HPLMN identity unchanged when the third PLMN is not present.
It should be noted that, in the embodiment of the present application, the content specifically executed by the determining module 501, the searching module 502, and the processing module 503 may refer to the related content in the embodiment shown in fig. 2 to fig. 4, which is not described herein again.
Optionally, the correction device of the HPLMN identifier may be a chip or a chip module, etc.
The HPLMN-identified correction apparatus described in the above embodiments may include modules that are software modules or hardware modules, or may be partly software modules and partly hardware modules. For example, for each device or product applied to or integrated in a chip, each module included in the device or product may be implemented by hardware such as a circuit, or at least a part of the modules may be implemented by a software program running on a processor integrated in the chip, and the rest (if any) part of the modules may be implemented by hardware such as a circuit; for each device and product applied to or integrated with the chip module, each module included in the device and product may be implemented in a hardware manner such as a circuit, and different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least a part of the modules may be implemented in a software program running on a processor integrated in the chip module, and the rest (if any) part of the modules may be implemented in a hardware manner such as a circuit; for each device or product applied to or integrated in the terminal, the modules included in the device or product may all be implemented by hardware such as a circuit, different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some of the modules may be implemented by a software program running on a processor integrated in the terminal, and the rest (if any) of the modules may be implemented by hardware such as a circuit.
Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a UE, where the UE includes at least one processor and a memory; wherein the memory stores computer execution instructions; the at least one processor executes the computer execution instructions stored in the memory to implement the steps performed by the UE in the above embodiments, which is not described herein again.
For better understanding of the embodiment of the present application, referring to fig. 6, fig. 6 is a schematic diagram of a hardware structure of a user equipment provided in the embodiment of the present application.
As shown in fig. 6, the user equipment 60 of the present embodiment includes: a processor 601 and a memory 602; wherein:
a memory 602 for storing computer-executable instructions;
the processor 601 is configured to execute a computer execution instruction stored in the memory to implement each step of the HPLMN identifier correction method described in the foregoing embodiments, which may specifically refer to the description in the foregoing embodiments, and is not described in detail in this embodiment.
Alternatively, the memory 602 may be separate or integrated with the processor 601.
When the memory 602 is provided separately, the device further comprises a bus 603 for connecting said memory 602 and the processor 601.
Further, based on the content described in the foregoing embodiments, an embodiment of the present application further provides a computer-readable storage medium, where a computer-executable instruction is stored in the computer-readable storage medium, and when a processor executes the computer-executable instruction, each step of the correction method for the HPLMN identifier described in the foregoing embodiment may be implemented, which specifically refers to the description in the foregoing embodiment, and is not described in detail in this embodiment.
Further, based on the content described in the foregoing embodiments, an embodiment of the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the correction method for the HPLMN identifier described in the foregoing embodiments may be implemented, specifically refer to the description in the foregoing embodiments, and are not described in detail in this embodiment.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The module integrated unit can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (11)

1. A method for correcting a home public land mobile network identity, the method comprising:
after User Equipment (UE) is started, acquiring MNC length indication information of a Home Public Land Mobile Network (HPLMN) in an SIM card, and determining whether the MNC length indication information is valid;
when the MNC length indication information is invalid, acquiring the first two digits of the MNC and the mobile country code MCC corresponding to the HPLMN, acquiring the public land mobile network PLMN stored in the memory of the UE and/or the SIM card, and determining the first PLMN of which the first two digits of the MNC and the MCC are the same as the HPLMN in each PLMN;
and determining the HPLMN identifier corresponding to the HPLMN according to the MNC length of the first PLMN.
2. The method of claim 1, wherein the obtaining MNC length indication information of the HPLMN in the SIM card and determining whether the MNC length indication information is valid comprises:
obtaining EF in SIM cardADFile, determining the EFADThe MNC length in the file indicates whether bytes are missing;
when the MNC length indication byte is not missing and the MNC length indicated by the MNC length indication byte is correct, determining that the MNC length indication information is valid;
and when the MNC length indication byte is missing or the MNC length indication byte is not missing and the MNC length indicated by the MNC length indication byte is wrong, determining that the MNC length indication information is invalid.
3. The method according to claim 1 or 2, wherein the determining the HPLMN identifier corresponding to the HPLMN according to the MNC length of the first PLMN comprises:
when the length of the MNC of each first PLMN is 2 bits, determining that the effective length of the MNC of the HPLMN identifier is 2 bits, and setting the third bit of the MNC in the HPLMN identifier to be 0 xF;
and when the length of the MNC of each first PLMN is 3 digits, determining that the effective length of the MNC of the HPLMN identifier is 3 digits, and determining the value of the third digit of the MNC in the HPLMN identifier according to the International Mobile Subscriber Identity (IMSI) of the SIM card.
4. The method according to claim 1 or 2, wherein the determining the HPLMN identifier corresponding to the HPLMN according to the MNC length of the first PLMN comprises:
when the length of the MNC of one part of the first PLMN is 2 digits and the length of the MNC of the other part of the first PLMN is 3 digits, determining a first target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card;
if the first target value is the same as the third bit of the MNC of any one first PLMN, determining that the effective length of the MNC of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as the first target value;
and if the first target value is different from the third bit of the MNC of each first PLMN, determining that the effective length of the MNC of the HPLMN identifier is 2 bits, and setting the third bit of the MNC in the HPLMN identifier as 0 xF.
5. The method according to claim 1 or 2, wherein after acquiring the PLMNs stored in the UE and/or the SIM card, the method further comprises:
if the first PLMN does not exist in the PLMNs, the effective length of the MNC of the HPLMN identifier is determined to be 2 bits, and the third bit of the MNC in the HPLMN identifier is set to be 0 xF.
6. The method according to claim 1 or 2, wherein after determining the HPLMN identifier corresponding to the HPLMN, further comprising:
after the UE finds out each PLMN to be selected corresponding to the current network environment, if the MNC length indication information is invalid and the MNC effective length of the HPLMN identifier which is determined currently is 2 bits, whether a second PLMN with the first two bits of MCC and MNC which are the same as the HPLMN exists in each PLMN to be selected or not is determined;
when the second PLMN exists and the MNC length of each second PLMN is 2 bits, keeping the MNC in the HPLMN identifier unchanged;
when the second PLMN with the MNC length of 3 digits exists, determining a second target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card; if the second target value is the same as the third bit value of the MNC of any one second PLMN, determining that the effective length of the MNC of the HPLMN identifier is 3 bits, and setting the third bit of the MNC in the HPLMN identifier as the second target value; and if the second target value is different from the third bit of the MNC of each second PLMN, keeping the MNC in the HPLMN identifier unchanged.
7. The method of claim 6, wherein after determining the HPLMN identifier corresponding to the HPLMN, further comprising:
after the UE finds out each PLMN to be selected corresponding to the current network environment, if the MNC length indication information is effective and the MNC length indication information indicates that the MNC effective length of the HPLMN identifier is 2 bits, determining whether a third PLMN with the first two bits of MCC and MNC identical to the HPLMN exists in each PLMN to be selected;
when the third PLMN exists and the effective length of the MNC of each third PLMN is 3 digits, determining a third target value of a third digit of the MNC in the HPLMN identifier according to the IMSI of the SIM card, if the third target value is the same as the third digit of the MNC of any one third PLMN, determining that the effective length of the MNC in the HPLMN identifier is 3 digits, and setting the third digit of the MNC in the HPLMN identifier as the third target value;
keeping the MNC in the HPLMN identity unchanged when the third PLMN is not present.
8. An apparatus for modifying a home public land mobile network identity, the apparatus comprising:
the system comprises a judging module, a judging module and a judging module, wherein the judging module is used for acquiring the MNC length indicating information of a mobile network code of a home public land mobile network HPLMN in an SIM card after User Equipment (UE) is started, and determining whether the MNC length indicating information is effective or not;
a searching module, configured to, when the MNC length indication information is invalid, obtain the first two digits of the MNC and the mobile country code MCC corresponding to the HPLMN, obtain a public land mobile network PLMN stored in the memory of the UE and/or the SIM card, and determine a first PLMN in which the first two digits of the MNC and the MCC in each PLMN are the same as the HPLMN;
and the processing module is used for determining the HPLMN identifier corresponding to the HPLMN according to the MNC length of the first PLMN.
9. A user device, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of correcting a home public land mobile network identity of any one of claims 1 to 7.
10. A computer-readable storage medium having stored thereon computer-executable instructions which, when executed by a processor, implement a method for home public land mobile network identity modification as claimed in any one of claims 1 to 7.
11. A computer program product comprising a computer program, wherein the computer program, when executed by a processor, implements the method for home public land mobile network identity correction of any one of claims 1 to 7.
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