CN113630756B - Private network PLMN matching method and device - Google Patents
Private network PLMN matching method and device Download PDFInfo
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- CN113630756B CN113630756B CN202010385136.4A CN202010385136A CN113630756B CN 113630756 B CN113630756 B CN 113630756B CN 202010385136 A CN202010385136 A CN 202010385136A CN 113630756 B CN113630756 B CN 113630756B
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Abstract
The application discloses a private network PLMN matching method and device, wherein the method comprises the following steps: a. judging whether the mobile country code SIM-MCC of the user identification module of the terminal is the same as the mobile country code BCCH-MCC of the broadcast control channel of the network, if so, executing the step b, otherwise, failing to match PLMN, and exiting the matching method; b. judging whether the third bit of the mobile network number BCCH-MNC of the broadcast control channel of the network is F, if so, executing the step c, otherwise, determining whether PLMN matching is successful or not according to whether the mobile network number SIM-MNC of the user identification module of the terminal is identical to the BCCH-MNC, and exiting the matching method; c. and judging whether the network is a North American network, if so, determining whether PLMN matching is successful according to a matching mode of a North American network terminal, otherwise, determining whether PLMN matching is successful according to whether the terminal is in a private network mode and whether the third bit of the SIM-MNC is zero. By adopting the invention, the network access rate of the private network can be improved.
Description
Technical Field
The present invention relates to mobile communication technology, and in particular, to a method and apparatus for matching private network Public Land Mobile Networks (PLMNs).
Background
In the existing mobile communication network, when a private network terminal selects network residence in a private network mode, whether the currently detected network can reside or not needs to be determined through PLMN matching.
Fig. 1 is a schematic flow chart of a PLMN matching method of the existing 3GPP protocol. As shown in fig. 1, the matching method is mainly implemented by the following steps:
And step 2, judging whether the 3 rd bit of the broadcast control channel-mobile network number (BCCH-MNC) of the network is hexadecimal F, if so, executing step 4, otherwise, executing step 3.
And 3, judging whether a subscriber identity module-mobile network number (SIM-MNC) of the terminal is identical to the BCCH-MNC, if so, the PLMN matching is successful, otherwise, the PLMN matching is failed.
And step 4, judging whether the BCCH-MCC is in the range of 310 to 316, if so, executing step 5, otherwise, executing step 6.
It should be noted here that if the BCCH-MCC is in the range of 310 to 316, it is indicated that the BCCH-MCC is a mobile country code of a north american network, otherwise it is indicated that the BCCH-MCC is a mobile country code of a non-north american network.
And 5, judging whether the third bit of the SIM-MNC is zero, if so, executing the step 6, otherwise, failing to match PLMN.
And 6, judging whether the first two digits of the SIM-MNC and the BCCH-MNC are the same, if so, successfully matching the PLMN, otherwise, failing to match the PLMN.
The PLMN matching scheme terminal can determine whether the currently detected network can reside or not, and can determine that the network cannot reside when the matching fails, and can determine that the network can reside when the matching is successful.
The inventors found in the course of implementing the present invention that: by adopting the PLMN matching scheme of the existing 3GPP protocol, the problem that the private network terminal enters the private network for a long time exists in certain scenes, and the PLMN matching scheme is not suitable for the private network terminal. For this reason, the inventors found, through intensive research analysis, that the cause of the above-described problems is as follows:
at present, for the PLMN planning non-standardization of the private network, the private network terminal can misconsider other private networks or public networks similar to PLMN-MNC as the network where the private network can reside by adopting the existing PLMN matching scheme. For example, a public network PLMN 46001, a private network PLMN is 460012, and in this case, the BCCH-MNC of the air interface transmission of the public network is 01F. According to the PLMN matching scheme of the 3GPP standard, when the third number of the BCCH-MNC is F and the BCCH-MCC belongs to the mobile country code of the non-North American network, whether the first two numbers of the BCCH-MNC and the SIM-MNC are identical can be determined. The first two digits of the private network terminal SIM-MNC are 01, which is the same as the first two digits of the public network BCCH-MNC, so the private network terminal will consider that the public network PLMN 46001 can reside at this time.
Thus, when the private network terminal is in the private network and other networks (public network or non-private network) which belong to the private network are covered simultaneously, if the private network terminal detects that the signal intensity of the other networks is stronger than that of the private network which belongs to the private network, the private network terminal can reside under other networks similar to the PLMN-MNC and initiate registration and then reject the registration, and then search the private network again, so that the time for the private network terminal to enter the private network which belongs to the private network is prolonged. Especially, in practical application, compared with private networks, public networks have the characteristic of being covered with multiple covers, so that the situation that the private network terminal is covered by multiple public networks and other private networks at the same time is easy to occur, under the situation, the private network terminal is likely to stay and adhere to other networks similar to PLMN, so that the private network terminal cannot enter the affiliated private network at a later time, and the private network access time delay is greatly increased.
Disclosure of Invention
Therefore, the main purpose of the present invention is to provide a method and apparatus for matching private network PLMNs, which can effectively improve the network access rate of the private network.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
a private network PLMN matching method, comprising:
a. judging whether the mobile country code SIM-MCC of the user identification module of the terminal is the same as the mobile country code BCCH-MCC of the broadcast control channel of the network, if so, executing the step b, otherwise, failing to match the PLMN of the public land mobile network, and exiting the matching method;
b. judging whether the third bit of the mobile network number BCCH-MNC of the broadcast control channel of the network is F, if so, executing the step c, otherwise, determining whether PLMN matching is successful or not according to whether the mobile network number SIM-MNC of the user identification module of the terminal is identical to the BCCH-MNC, and exiting the matching method;
c. and judging whether the network is a North American network, if so, determining whether PLMN matching is successful according to a matching mode of a North American network terminal, otherwise, determining whether PLMN matching is successful according to whether the terminal is in a private network mode and whether the third bit of the SIM-MNC is zero.
Preferably, in step c, determining whether PLMN matching is successful according to whether the terminal is in private network mode and whether the third bit of the SIM-MNC is zero comprises:
x1, judging whether the terminal is in a private network mode, if so, executing a step x2, otherwise, executing a step x3;
x2, judging whether the third bit of the SIM-MNC is zero, if so, executing the step x3; otherwise, executing the step x4;
x3, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, if so, successfully matching PLMN, and exiting the matching method; otherwise, the PLMN matching fails and the matching method is exited;
x4, judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
Preferably, in the step b, determining whether PLMN matching is successful according to whether the mobile network number SIM-MNC of the subscriber identity module of the terminal is identical to the BCCH-MNC or not includes:
judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
Preferably, in the step c, determining whether PLMN matching is successful according to the matching manner of the north american network terminal includes:
judging whether the third bit of the SIM-MNC is zero, if not, the PLMN matching fails; if yes, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, and if yes, successfully matching PLMN; otherwise, PLMN matching fails.
A private network PLMN matching device, disposed in a terminal, comprising: a processor for:
a. judging whether the mobile country code SIM-MCC of the user identification module of the terminal is the same as the mobile country code BCCH-MCC of the broadcast control channel of the network, if so, executing the step b, otherwise, failing to match the PLMN of the public land mobile network, and exiting the matching method;
b. judging whether the third bit of the mobile network number BCCH-MNC of the broadcast control channel of the network is F, if so, executing the step c, otherwise, determining whether PLMN matching is successful or not according to whether the mobile network number SIM-MNC of the user identification module of the terminal is identical to the BCCH-MNC, and exiting the matching method;
c. and judging whether the network is a North American network, if so, determining whether PLMN matching is successful according to a matching mode of a North American network terminal, otherwise, determining whether PLMN matching is successful according to whether the terminal is in a private network mode and whether the third bit of the SIM-MNC is zero.
Preferably, the processor is specifically configured to determine whether PLMN matching is successful according to whether the terminal is in private network mode and whether the third bit of the SIM-MNC is zero, including:
x1, judging whether the terminal is in a private network mode, if so, executing a step x2, otherwise, executing a step x3;
x2, judging whether the third bit of the SIM-MNC is zero, if so, executing the step x3; otherwise, executing the step x4;
x3, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, if so, successfully matching PLMN, and exiting the matching method; otherwise, the PLMN matching fails and the matching method is exited;
x4, judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
Preferably, the processor is specifically configured to determine whether PLMN matching is successful according to whether a mobile network number SIM-MNC of a subscriber identity module of the terminal is identical to the BCCH-MNC, including:
judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
Preferably, the processor is specifically configured to determine, according to a matching manner of the north american network terminal, whether PLMN matching is successful, including:
judging whether the third bit of the SIM-MNC is zero, if not, the PLMN matching fails; if yes, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, and if yes, successfully matching PLMN; otherwise, PLMN matching fails.
The application also discloses a non-transitory computer readable storage medium storing instructions which, when executed by a processor, cause the processor to perform the steps of the private network PLMN matching method described previously.
Also disclosed is an electronic device comprising a non-volatile computer readable storage medium as described above, and the processor having access to the non-volatile computer readable storage medium.
As can be seen from the above technical solutions, the method and apparatus for matching private network PLMNs according to the present invention optimizes the existing PLMN matching scheme with respect to the problems mentioned in the background section, that is, in the matching process, when a matched network is detected that is not a north american network, whether PLMN matching is successful needs to be determined according to whether the terminal is in private network mode and whether the third bit of the SIM-MNC is zero, instead of simply determining whether PLMN matching is successful directly according to the matching results of the first two bits of the SIM-MNC and the BCCH-MNC. Therefore, the situation that the terminal cannot accurately identify the non-affiliated private network due to the similarity of the private network PLMN and other network PLMNs can be effectively avoided, the private network terminal can be prevented from being refused due to the fact that the private network terminal erroneously resides in the non-affiliated private network, and the private network access efficiency can be greatly improved.
Drawings
Fig. 1 is a flow chart of a conventional PLMN matching method.
Fig. 2 is a schematic flow chart of a private network PLMN matching method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a specific example of private network PLMN matching according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the embodiments, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Fig. 2 is a flow chart of an embodiment of the present invention, and as shown in fig. 2, a private network PLMN matching method implemented in this embodiment mainly includes:
In this step, the following method may be specifically adopted to determine whether PLMN matching is successful:
judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
The step is to be described, unlike the existing method, when judging that the currently matched network is not a north american network, it is necessary to further determine whether PLMN matching is successful according to whether the terminal is in private network mode and whether the third bit of SIM-MNC of the terminal is zero, so that the private network terminal can accurately identify the non-resident network, avoiding identifying other networks similar to PLMN as resident networks, avoiding the situation that attachment is refused after residence, especially avoiding the situation that the terminal is continuously resident and attached in other networks similar to PLMN, thereby improving the private network access efficiency.
Preferably, in this step, in order to further improve the accuracy of the private network terminal PLMN, when the terminal is in the private network mode, a suitable matching mode may be selected according to whether the third bit of the SIM-MNC is zero, that is, if the third bit of the SIM-MNC is 0, the first two bits of the MNC are compared, and if the third bit of the SIM-MNC is not 0, all three bits of the MNC are required to be compared, so as to effectively solve the problem that the time delay of entering the private network under some scenarios by the private network terminal is longer. Based on this, the following method may be adopted in this step to determine whether PLMN matching is successful according to whether the terminal is in private network mode and whether the third bit of the SIM-MNC is zero:
and x1, judging whether the terminal is in a private network mode, if so, executing a step x2, otherwise, executing a step x3.
x2, judging whether the third bit of the SIM-MNC is zero, if so, executing the step x3; otherwise, step x4 is performed.
x3, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, if so, successfully matching PLMN, and exiting the matching method; otherwise, PLMN matching fails and the matching method is exited.
x4, judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
Here, it is required to determine whether the SIM-MNC is identical to the BCCH-MNC, i.e., the SIM-MNC and the BCCH-MNC are compared in bits one by one, and determine whether both are identical, instead of determining whether part of the bits are identical, so that the terminal can be prevented from erroneously identifying other networks similar to the PLMN as resident networks.
In step 205, the specific method for determining whether the network is a north american network is the same as the existing scheme, i.e. determining whether the BCCH-MCC is within the range of 310-316.
In step 205, according to the matching manner of the north american network terminal, it is determined whether PLMN matching is successful, which may be implemented by using an existing method, that is: judging whether the third bit of the SIM-MNC is zero, if not, the PLMN matching fails; if yes, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, and if yes, successfully matching PLMN; otherwise, PLMN matching fails.
Fig. 2 is a specific flow of PLMN matching of a private network according to the embodiment of the foregoing solution, as shown in fig. 2, when the network is determined to be a north american network, whether PLMN matching is successful needs to be further determined according to whether the terminal is in the private network mode and whether the third bit of the SIM-MNC is zero, which effectively improves accuracy of identifying non-private networks by the private network terminal, so as to greatly improve network access efficiency of the private network.
Corresponding to the above method embodiment, the present application further provides a private network PLMN matching device, provided in a terminal, including: a processor for:
a. judging whether the mobile country code SIM-MCC of the user identification module of the terminal is the same as the mobile country code BCCH-MCC of the broadcast control channel of the network, if so, executing the step b, otherwise, failing to match the PLMN of the public land mobile network, and exiting the matching method;
b. judging whether the third bit of the mobile network number BCCH-MNC of the broadcast control channel of the network is F, if so, executing the step c, otherwise, determining whether PLMN matching is successful or not according to whether the mobile network number SIM-MNC of the user identification module of the terminal is identical to the BCCH-MNC, and exiting the matching method;
c. and judging whether the network is a North American network, if so, determining whether PLMN matching is successful according to a matching mode of a North American network terminal, otherwise, determining whether PLMN matching is successful according to whether the terminal is in a private network mode and whether the third bit of the SIM-MNC is zero.
Preferably, the processor is specifically configured to determine whether PLMN matching is successful according to whether the terminal is in private network mode and whether the third bit of the SIM-MNC is zero, including:
x1, judging whether the terminal is in a private network mode, if so, executing a step x2, otherwise, executing a step x3;
x2, judging whether the third bit of the SIM-MNC is zero, if so, executing the step x3; otherwise, executing the step x4;
x3, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, if so, successfully matching PLMN, and exiting the matching method; otherwise, the PLMN matching fails and the matching method is exited;
x4, judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
Preferably, the processor is specifically configured to determine whether PLMN matching is successful according to whether a mobile network number SIM-MNC of a subscriber identity module of the terminal is identical to the BCCH-MNC, including:
judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
Preferably, the processor is specifically configured to determine, according to a matching manner of the north american network terminal, whether PLMN matching is successful, including:
judging whether the third bit of the SIM-MNC is zero, if not, the PLMN matching fails; if yes, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, and if yes, successfully matching PLMN; otherwise, PLMN matching fails.
Further, the present application provides a non-transitory computer readable storage medium storing instructions which, when executed by a processor, cause the processor to perform the steps of the private network PLMN matching method as described above.
Furthermore, the application also provides an electronic device comprising the non-volatile computer readable storage medium and the processor with access to the non-volatile computer readable storage medium.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A private network PLMN matching method, comprising:
a. judging whether the mobile country code SIM-MCC of the user identification module of the terminal is the same as the mobile country code BCCH-MCC of the broadcast control channel of the network, if so, executing the step b, otherwise, failing to match the PLMN of the public land mobile network, and exiting the matching method;
b. judging whether the third bit of the mobile network number BCCH-MNC of the broadcast control channel of the network is F, if so, executing the step c, otherwise, determining whether PLMN matching is successful or not according to whether the mobile network number SIM-MNC of the user identification module of the terminal is identical to the BCCH-MNC, and exiting the matching method;
c. and judging whether the network is a North American network, if so, determining whether PLMN matching is successful according to a matching mode of a North American network terminal, otherwise, determining whether PLMN matching is successful according to whether the terminal is in a private network mode and whether the third bit of the SIM-MNC is zero.
2. The method of claim 1, wherein determining in step c whether PLMN matching was successful based on whether the terminal is in private network mode and whether the third bit of the SIM-MNC is zero comprises:
x1, judging whether the terminal is in a private network mode, if so, executing a step x2, otherwise, executing a step x3;
x2, judging whether the third bit of the SIM-MNC is zero, if so, executing the step x3; otherwise, executing the step x4;
x3, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, if so, successfully matching PLMN, and exiting the matching method; otherwise, the PLMN matching fails and the matching method is exited;
x4, judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
3. The method according to claim 1, wherein determining in step b whether PLMN matching is successful based on whether a mobile network number SIM-MNC of a subscriber identity module of the terminal is identical to the BCCH-MNC comprises:
judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
4. The method according to claim 1, wherein the determining in step c whether PLMN matching is successful according to the matching method of the north american network terminal includes:
judging whether the third bit of the SIM-MNC is zero, if not, the PLMN matching fails; if yes, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, and if yes, successfully matching PLMN; otherwise, PLMN matching fails.
5. The utility model provides a match device of private network PLMN which characterized in that locates in the terminal, includes: a processor for:
a. judging whether the mobile country code SIM-MCC of the user identification module of the terminal is the same as the mobile country code BCCH-MCC of the broadcast control channel of the network, if so, executing the step b, otherwise, failing to match the PLMN of the public land mobile network, and exiting the matching method;
b. judging whether the third bit of the mobile network number BCCH-MNC of the broadcast control channel of the network is F, if so, executing the step c, otherwise, determining whether PLMN matching is successful or not according to whether the mobile network number SIM-MNC of the user identification module of the terminal is identical to the BCCH-MNC, and exiting the matching method;
c. and judging whether the network is a North American network, if so, determining whether PLMN matching is successful according to a matching mode of a North American network terminal, otherwise, determining whether PLMN matching is successful according to whether the terminal is in a private network mode and whether the third bit of the SIM-MNC is zero.
6. The apparatus of claim 5, wherein the processor is configured to determine whether PLMN matching is successful based on whether the terminal is in private network mode and whether a third bit of the SIM-MNC is zero, comprising:
x1, judging whether the terminal is in a private network mode, if so, executing a step x2, otherwise, executing a step x3;
x2, judging whether the third bit of the SIM-MNC is zero, if so, executing the step x3; otherwise, executing the step x4;
x3, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, if so, successfully matching PLMN, and exiting the matching method; otherwise, the PLMN matching fails and the matching method is exited;
x4, judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
7. The apparatus of claim 5, wherein the processor is configured to determine whether PLMN matching is successful based on whether a mobile network number SIM-MNC of a subscriber identity module of the terminal is identical to the BCCH-MNC, comprising:
judging whether the SIM-MNC is identical to the BCCH-MNC or not, if so, successfully matching PLMN; otherwise, PLMN matching fails.
8. The apparatus of claim 5, wherein the processor is configured to determine whether PLMN matching is successful in accordance with a matching method of a north american network terminal, and comprises:
judging whether the third bit of the SIM-MNC is zero, if not, the PLMN matching fails; if yes, judging whether the first two bits of the SIM-MNC and the BCCH-MNC are the same, and if yes, successfully matching PLMN; otherwise, PLMN matching fails.
9. A non-transitory computer readable storage medium storing instructions which, when executed by a processor, cause the processor to perform the steps of the private network PLMN matching method of any of claims 1 to 4.
10. An electronic device comprising the non-volatile computer-readable storage medium of claim 9, and the processor having access to the non-volatile computer-readable storage medium.
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| US8619665B2 (en) * | 2007-02-02 | 2013-12-31 | Telefonaktiebolaget L M Ericsson (Publ) | Derivation of user equipment identifiers |
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| EP1496716A1 (en) * | 2003-07-10 | 2005-01-12 | Lg Electronics Inc. | Method for transferring a mobile network code of variable length |
| EP1681804A1 (en) * | 2005-01-14 | 2006-07-19 | Research In Motion Limited | Network selection in a multi-systems environment in a visited PLMN |
| WO2018045805A1 (en) * | 2016-09-12 | 2018-03-15 | 中兴通讯股份有限公司 | Network registration method and device |
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