CN116017462B - SIM card authorization management method, device and system - Google Patents
SIM card authorization management method, device and system Download PDFInfo
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- CN116017462B CN116017462B CN202310308503.4A CN202310308503A CN116017462B CN 116017462 B CN116017462 B CN 116017462B CN 202310308503 A CN202310308503 A CN 202310308503A CN 116017462 B CN116017462 B CN 116017462B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to the technical field of communication, in particular to a SIM card authorization management method, a device and a system, which comprise the following steps: receiving a network access request, and inquiring whether the base station is an authorized base station or not; generating random data, and using the random data to test the link quality of the SIM card; invoking historical link quality data corresponding to the SIM card, and judging whether the SIM card is positioned at an authorized place according to the historical link quality data; if the base station is an authorized base station and the SIM card is positioned at the authorized place, permitting a network access request of the SIM card; and after a set time length, disconnecting the communication link with the SIM card. The invention determines whether the SIM card is open to access the authorization by inquiring whether the base station corresponds to the SIM or not and carrying out quality test on the link of the SIM card, thereby realizing SIM mobile authorization management and being capable of being used for standardizing the use range of the POS machine with the built-in SIM card.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for managing SIM card authorization.
Background
The SIM (Subscriber Identity Module) card is an IC card held by a mobile subscriber of the GSM system, called a subscriber identity card. The GSM (Global System for Mobile Communications ) system identifies GSM subscribers through SIM cards.
Along with the development of mobile communication technology, the use of the SIM card is not limited to a mobile phone, and the SIM card can be used in various devices needing to be accessed to a network, wherein the Internet of things card belongs to a specific use mode of the SIM card and is not essentially different from the SIM card.
An important technical point of the SIM card or the Internet of things card in use is authorization of the card. The authorization of the traditional SIM is realized based on real-name authentication, and information can be traced back later when necessary, but illegal use cannot be prevented or monitored.
The POS (point of sale) machine is a mobile sales terminal, has the function of card swiping and settlement, and is always a research hot spot for the use safety of the POS machine. The POS machine also uses the SIM card, and how to manage and standardize the use of the POS machine through reasonable SIM authorization is a problem to be solved.
Disclosure of Invention
Based on this, it is necessary to provide a SIM card authorization management method, device and system for the above-mentioned problems.
The embodiment of the invention is realized in such a way that the SIM card authorization management method comprises the following steps:
receiving a network access request, and inquiring whether the base station is an authorized base station or not;
generating random data, and using the random data to test the link quality of the SIM card;
invoking historical link quality data corresponding to the SIM card, and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
if the base station is an authorized base station and the SIM card is positioned at the authorized place, permitting a network access request of the SIM card;
and after a set time length, disconnecting the communication link with the SIM card.
In one embodiment, the present invention provides a SIM card authorization management device, including:
the inquiry module is used for receiving the network access request and inquiring whether the base station is an authorized base station or not;
the testing module is used for generating random data and testing the link quality of the SIM card by using the random data;
the judging module is used for calling the historical link quality data of the corresponding SIM card and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
the access module is used for permitting the network access request of the SIM card if the base station is an authorized base station and the SIM card is positioned at an authorized place;
and the timing module is used for disconnecting the communication link with the SIM card after a set time length.
In one embodiment, the present invention provides a SIM card authorization management system, including:
the server is used for providing authorized base station inquiry for the base station;
a base station, which is communicated with the server and is used for executing the SIM card authorization management method; and
the POS machine is internally provided with a SIM card and is communicated with the base station.
The invention determines whether the SIM card is open to access authorization or not by inquiring whether the base station corresponds to the SIM or not and carrying out quality test on the link of the SIM card, thereby realizing SIM mobile authorization management, being capable of being used for standardizing the use range of the POS machine with the built-in SIM card and effectively preventing the POS machine from being sold or unauthorized use in different places.
Drawings
Fig. 1 is a flowchart of a SIM card authorization management method according to one embodiment;
fig. 2 is a block diagram of a SIM card authorization management device according to an embodiment;
FIG. 3 is a block diagram of a SIM card authorization management system according to one embodiment;
fig. 4 is a block diagram of an internal structure of a base station in one embodiment.
Description of the embodiments
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish one element from another element. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script, without departing from the scope of this disclosure.
As shown in fig. 1, in one embodiment, a method for managing authorization of a SIM card is provided, which specifically includes the following steps:
step S100, a network access request is received, and whether the base station is an authorized base station is inquired;
step S200, generating random data, and using the random data to test the link quality of the SIM card;
step S300, calling historical link quality data corresponding to the SIM card, and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
step S400, if the base station is an authorized base station and the SIM card is positioned at an authorized place, the network access request of the SIM card is permitted;
step S500, after a set time, the communication link with the SIM card is disconnected.
In this embodiment, the network access request refers to a network access registration process when the SIM card communicates each time, and the SIM card needs to report information to the base station to enable the network to determine which base station the SIM card is located at. In the process, the base station manages the network access request of the SIM by executing the method provided by the invention. In this embodiment, the authorized base station is a correspondence between the SIM card or POS machine and the base station, which is fixed when the SIM card or POS machine is turned on, and in the present invention, each SIM card or POS machine corresponds to only one base station, and the base station is determined by the application address of the SIM card or POS machine, and once it is determined that the base station is not modifiable during normal use, the SIM card or POS machine can only access the network under the base station by this limitation.
In this embodiment, the SIM card and POS are allowed to move to a small extent under the authorized base station, defined by link quality testing of the SIM card and by detecting the link quality of the SIM card. In this embodiment, by randomly generating a data, the link quality of the SIM card is determined by using the transmission process of the random data, so as to determine whether the movement of the SIM card or POS is within an allowable range, thereby determining whether to allow the SIM card to access the network.
In this embodiment, a fixed communication duration is further set, after the SIM card accesses the network each time, the SIM card only keeps communicating with the base station within the fixed communication duration, and then needs to re-verify the access. The set time period may be 10 minutes, half an hour, or the like, and is set by the manager.
The invention determines whether the SIM card is open to access authorization or not by inquiring whether the base station corresponds to the SIM or not and carrying out quality test on the link of the SIM card, thereby realizing SIM mobile authorization management, being capable of being used for standardizing the use range of the POS machine with the built-in SIM card and effectively preventing the POS machine from being sold or unauthorized use in different places.
As an optional embodiment of the present invention, the querying whether the base station is an authorized base station includes:
sending the base station code of the base station and the SIM code to a server to enable the server to inquire the corresponding relation between the base station code and the SIM code;
acquiring a corresponding relation between a base station code and an SIM code returned by a server;
if the base station code corresponds to the SIM code, the base station is an authorized base station, and if the base station code does not correspond to the SIM code, the base station is an unauthorized base station.
In this embodiment, the corresponding relationship between the SIM card or POS machine and the base station is stored in the server, so that the storage space of the base station is not occupied, the initial authorization is performed at the cloud end, the base station is not needed in the authorization process, and the data amount stored in each base station is reduced.
As an optional embodiment of the present invention, the testing the link quality of the SIM card using the random data includes:
dividing the random data into a plurality of sub-data, so that each sub-data has the same size;
sequentially sending each piece of sub data to a corresponding terminal of the SIM card, and receiving data returned by the corresponding terminal of the SIM card;
determining delay amount and packet loss rate of the SIM card according to the sent data and the returned data;
and determining the link quality of the SIM card according to the delay amount and the packet loss rate.
In this embodiment, parallel or serial links may be used for transmission, but for a SIM card or a POS device, the data transmission modes should be kept consistent each time verification is performed, so as to reduce the influence of differences caused by different transmission modes.
In this embodiment, the base station transmits sub-data to the corresponding terminal (in the present invention, a POS machine is taken as an example) of the SIM, and the corresponding terminal is required to return as it is after receiving the sub-data, and the delay amount and the packet loss rate can be determined by comparing the difference between the sent data and the received returned data, so as to determine the quality of the passing link.
As an optional embodiment of the present invention, the determining the delay amount of the SIM card according to the transmitted data and the returned data includes:
calculating the time difference between the sending time and the receiving time of each piece of sub data;
and calculating the accumulated average value of the time difference to obtain the delay quantity of the SIM card.
In this embodiment, the verification process can be suspended at any time using the cumulative average value without waiting for all sub-data to be transferred. It should be understood that the cumulative average herein refers to the cumulative average of the time differences of all the sub-data in the current test process, and does not include the historical data.
As an optional embodiment of the present invention, determining a packet loss rate of the SIM card according to the transmitted data and the returned data includes:
comparing each received sub data with the corresponding sent sub data to determine a data difference;
calculating the proportion of the data difference to the data quantity of the sent sub data as a first proportion;
judging whether the first proportion is larger than a set packet loss threshold value, if so, marking the sub data as loss, and calculating the proportion of the lost sub data as a second proportion;
calculating the proportion of the sum of the data differences to the random data and marking the proportion as a third proportion;
and obtaining the packet loss rate of the SIM card by the weighted average of the second proportion and the third proportion.
In this embodiment, the packet loss rate is represented by two components, and a part is a loss proportion of each sub-data, if the loss proportion is greater than a set value (such as 0.2, 0.1, etc.), the sub-data will be invalid in normal use, and the whole sub-data is considered to be lost at this time; the other part is the total data loss ratio, i.e. the ratio of the sum of the data amounts lost by the individual sub-data to the random data generated, which characterizes the stability during the whole data transmission.
In this embodiment, the weighting coefficients of the second proportion and the third proportion may be set by the manager, and may be set according to the substantial requirement of the network quality, for example, 0.2 and 0.8 respectively, which is not limited in the embodiment of the present invention.
As an optional embodiment of the present invention, the determining the link quality of the SIM card according to the delay amount and the packet loss rate includes:
and calculating the weighted sum of the delay amount and the packet loss rate according to the set weight to obtain the link quality of the SIM card.
In this embodiment, the delay amount and the weight of the packet loss rate may be determined by a data collection manner, the respective probabilities of the delay and the packet loss of the data may be determined by analyzing the historical data, and the two probabilities are normalized and then used as the corresponding weights, so that the obtained link quality may be adapted to the condition of the current network environment. Of course, the manager may set two fixed values, for example, 0.5.
As an optional embodiment of the present invention, the determining whether the SIM card is located at an authorized location according to the historical link quality data includes:
determining the delay amount, the packet loss rate and the allowable range of the link quality of the SIM card according to the historical data;
and if the calculated delay amount, the packet loss rate and the link quality of the SIM card respectively fall into the respective allowable ranges, judging that the SIM card is positioned at the authorized place.
In this embodiment, the delay amount, the packet loss rate and the link quality are all represented by values, so that an allowable value range can be obtained, and when the three values respectively fall into the corresponding value ranges, the SIM card is determined to be located at the authorized location.
As an optional embodiment of the present invention, the allowable range of any one of the delay amount, the packet loss rate or the link quality of the SIM card is determined according to the history data by the following method:
determining the distribution of historical data by taking time as a horizontal axis and a numerical value as a vertical axis;
calculating a regression line of the historical data;
taking the current time on a time axis, and determining a numerical value corresponding to the regression line and the current time;
obtaining a left end point of the allowable range from a value corresponding to the current time on the regression line and a set lower offset coefficient, and obtaining a right end point of the allowable range from a value corresponding to the current time on the regression line and a set upper offset coefficient;
and obtaining the allowed range from the left end point and the right end point.
In this embodiment, any one of the delay amount, the packet loss rate or the link quality takes the average value at each test, so a series of discrete points can be obtained, linear regression fitting can be performed on the discrete points, and a corresponding value can be obtained from the current time after fitting. In this embodiment, the upper offset coefficient and the lower offset data may be identical, and typically take a range between 0.2 and 0.4, for example, the upper offset coefficient and the lower offset data each take 0.3, and the value obtained is n, and the allowable range is (0.7 n,1.3 n).
As shown in fig. 2, the embodiment of the present invention further provides a SIM card authorization management device, where the SIM card authorization management device includes:
the inquiry module is used for receiving the network access request and inquiring whether the base station is an authorized base station or not;
the testing module is used for generating random data and testing the link quality of the SIM card by using the random data;
the judging module is used for calling the historical link quality data of the corresponding SIM card and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
the access module is used for permitting the network access request of the SIM card if the base station is an authorized base station and the SIM card is positioned at an authorized place;
and the timing module is used for disconnecting the communication link with the SIM card after a set time length.
In this embodiment, each module of the SIM card authorization management device is modularized in the method of the present invention, and for specific explanation of each module, please refer to the corresponding content in the method of the present invention, the embodiments of the present invention are not repeated here.
As shown in fig. 3, the embodiment of the present invention further provides a SIM card authorization management system, where the SIM card authorization management system includes:
the server is used for providing authorized base station inquiry for the base station;
the base station is communicated with the server and is used for executing the SIM card authorization management method according to the embodiment of the invention; and
the POS machine is internally provided with a SIM card and is communicated with the base station.
In this embodiment, the base station and the POS machine communicate through a wireless connection manner, and the base station and the POS machine directly communicate without transferring, so the present invention is not suitable for a scenario of accessing a network through a wireless network such as WIFI. In this embodiment, the correspondence between the SIM card or POS machine and the base station is stored in the server, and this correspondence is uniquely determined when the SIM card or POS machine is activated.
In this embodiment, the corresponding relationship between the SIM card and the base station and the link quality synchronization of the SIM card are verified, and the communication link is established only when both satisfy the corresponding conditions, allowing the SIM to be attached to the network through the base station. The invention determines whether the SIM card is open to access authorization or not by inquiring whether the base station corresponds to the SIM or not and carrying out quality test on the link of the SIM card, thereby realizing SIM mobile authorization management, being capable of being used for standardizing the use range of the POS machine with the built-in SIM card and effectively preventing the POS machine from being sold or unauthorized use in different places.
Fig. 4 shows an internal structural diagram of a base station in one embodiment. The base station may in particular be the base station in fig. 3. As shown in fig. 4, the base station includes a processor, a memory, a network interface, an input device, and a display screen connected by a system bus. The memory includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium of the base station stores an operating system and also stores a computer program, which when executed by a processor, can cause the processor to implement the SIM card authorization management method provided by the embodiments of the present invention. The internal memory may also store a computer program, which when executed by the processor, causes the processor to execute the SIM card authorization management method provided by the embodiments of the present invention. The display screen of the base station can be a liquid crystal display screen or an electronic ink display screen, the input device of the base station can be a touch layer covered on the display screen, can be a key, a track ball or a touch pad arranged on the shell of the base station, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 4 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the base station to which the present inventive arrangements are applied, and that a particular base station may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the SIM card authorization management device provided in the embodiment of the present invention may be implemented in the form of a computer program, and the computer program may run on a base station as shown in fig. 4. The memory of the base station may store various program modules constituting the SIM card authorization management device, such as the inquiry module, the test module, the judgment module, the admission module, and the timing module shown in fig. 2. The computer program constituted by the respective program modules causes the processor to execute the steps in the SIM card authorization management method of the respective embodiments of the present invention described in the present specification.
For example, the base station shown in fig. 4 may perform step S100 through the inquiry module in the SIM card authorization management apparatus shown in fig. 2; the base station can execute step S200 through the test module; the base station can execute step S300 through the judging module; the base station can execute step S400 through the admission module; the base station may perform step S500 through a timing module.
In one embodiment, a base station is provided, the base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
receiving a network access request, and inquiring whether the base station is an authorized base station or not;
generating random data, and using the random data to test the link quality of the SIM card;
invoking historical link quality data corresponding to the SIM card, and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
if the base station is an authorized base station and the SIM card is positioned at the authorized place, permitting a network access request of the SIM card;
and after a set time length, disconnecting the communication link with the SIM card.
In one embodiment, a computer readable storage medium is provided, having a computer program stored thereon, which when executed by a processor causes the processor to perform the steps of:
receiving a network access request, and inquiring whether the base station is an authorized base station or not;
generating random data, and using the random data to test the link quality of the SIM card;
invoking historical link quality data corresponding to the SIM card, and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
if the base station is an authorized base station and the SIM card is positioned at the authorized place, permitting a network access request of the SIM card;
and after a set time length, disconnecting the communication link with the SIM card.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in various embodiments may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The SIM card authorization management method is characterized by comprising the following steps of:
receiving a network access request, and inquiring whether the base station is an authorized base station or not;
generating random data, and using the random data to test the link quality of the SIM card;
invoking historical link quality data corresponding to the SIM card, and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
if the base station is an authorized base station and the SIM card is positioned at the authorized place, permitting a network access request of the SIM card;
and after a set time length, disconnecting the communication link with the SIM card.
2. The SIM card authorization management method of claim 1, wherein the querying whether the base station is an authorized base station includes:
sending the base station code of the base station and the SIM code to a server to enable the server to inquire the corresponding relation between the base station code and the SIM code;
acquiring a corresponding relation between a base station code and an SIM code returned by a server;
if the base station code corresponds to the SIM code, the base station is an authorized base station, and if the base station code does not correspond to the SIM code, the base station is an unauthorized base station.
3. The SIM card authorization management method according to claim 1, wherein the testing the link quality of the SIM card using the random data includes:
dividing the random data into a plurality of sub-data, so that each sub-data has the same size;
sequentially sending each piece of sub data to a corresponding terminal of the SIM card, and receiving data returned by the corresponding terminal of the SIM card;
determining delay amount and packet loss rate of the SIM card according to the sent data and the returned data;
and determining the link quality of the SIM card according to the delay amount and the packet loss rate.
4. A SIM card authorization management method according to claim 3, wherein the determining the delay amount of the SIM card according to the transmitted data and the returned data includes:
calculating the time difference between the sending time and the receiving time of each piece of sub data;
and calculating the accumulated average value of the time difference to obtain the delay quantity of the SIM card.
5. A SIM card authorization management method according to claim 3, wherein determining a packet loss rate of the SIM card based on the transmitted data and the returned data comprises:
comparing each received sub data with the corresponding sent sub data to determine a data difference;
calculating the proportion of the data difference to the data quantity of the sent sub data as a first proportion;
judging whether the first proportion is larger than a set packet loss threshold value, if so, marking the sub data as loss, and calculating the proportion of the lost sub data as a second proportion;
calculating the proportion of the sum of the data differences to the random data and marking the proportion as a third proportion;
and obtaining the packet loss rate of the SIM card by the weighted average of the second proportion and the third proportion.
6. The SIM card authorization management method according to claim 3, wherein the determining the link quality of the SIM card according to the delay amount and the packet loss rate includes:
and calculating the weighted sum of the delay amount and the packet loss rate according to the set weight to obtain the link quality of the SIM card.
7. The SIM card authorization management method of claim 6, wherein the determining whether the SIM card is located at the authorized location according to the historical link quality data includes:
determining the delay amount, the packet loss rate and the allowable range of the link quality of the SIM card according to the historical link quality data;
and if the calculated delay amount, the packet loss rate and the link quality of the SIM card respectively fall into the respective allowable ranges, judging that the SIM card is positioned at the authorized place.
8. The SIM card authorization management method according to claim 7, wherein the allowable range of any one of the delay amount, the packet loss rate, or the link quality of the SIM card is determined from the historical link quality data by:
determining the distribution of historical data by taking time as a horizontal axis and a numerical value as a vertical axis;
calculating a regression line of the historical data;
taking the current time on a time axis, and determining a numerical value corresponding to the regression line and the current time;
obtaining a left end point of the allowable range from a value corresponding to the current time on the regression line and a set lower offset coefficient, and obtaining a right end point of the allowable range from a value corresponding to the current time on the regression line and a set upper offset coefficient;
and obtaining the allowed range from the left end point and the right end point.
9. A SIM card authorization management device, characterized in that the SIM card authorization management device comprises:
the inquiry module is used for receiving the network access request and inquiring whether the base station is an authorized base station or not;
the testing module is used for generating random data and testing the link quality of the SIM card by using the random data;
the judging module is used for calling the historical link quality data of the corresponding SIM card and judging whether the SIM card is positioned at an authorized place according to the historical link quality data;
the access module is used for permitting the network access request of the SIM card if the base station is an authorized base station and the SIM card is positioned at an authorized place;
and the timing module is used for disconnecting the communication link with the SIM card after a set time length.
10. A SIM card authorization management system, the SIM card authorization management system comprising:
the server is used for providing authorized base station inquiry for the base station;
a base station in communication with the server for performing the SIM card authorization management method of any one of claims 1-8; and
the POS machine is internally provided with a SIM card and is communicated with the base station.
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| US9852416B2 (en) * | 2013-03-14 | 2017-12-26 | Lookout, Inc. | System and method for authorizing a payment transaction |
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| CN102457938A (en) * | 2010-10-18 | 2012-05-16 | 中兴通讯股份有限公司 | User equipment (UE) access restriction method and system thereof |
| CN106658654A (en) * | 2017-01-22 | 2017-05-10 | 北京佰才邦技术有限公司 | Soft SIM control method and user terminal |
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