CN118158681A - Method and device for acquiring IMSI of terminal, small base station and terminal - Google Patents
Method and device for acquiring IMSI of terminal, small base station and terminal Download PDFInfo
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Abstract
The invention provides a method and a device for acquiring an IMSI of a terminal, a small base station and the terminal, and relates to the technical field of communication. The method is applied to the small base station and comprises the following steps: under the condition that a target message sent by a terminal to a Mobility Management Entity (MME) is received, intercepting the target message and sending an identity inquiry request to the terminal; wherein the target message comprises: an attach request message and/or a service request message; and receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI). The scheme of the invention solves the problem that the small base station cannot acquire the IMSI of the terminal which is resident under the cell or is initially accessed in the coverage area of the small base station.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for obtaining an IMSI of a terminal, a small base station, and a terminal.
Background
With the development of wireless communication technology, network traffic in a mobile communication system is greatly increased, and small base stations can effectively transfer traffic flow of macro base stations and help the macro base stations to carry out traffic unloading, so that the small base stations are widely applied. The small base station has the characteristics of small coverage and easy deployment, and can solve the problem of weak coverage when deployed in small business places.
Currently, there is a problem that a small cell cannot collect an international mobile subscriber identity (International Mobile SubscriberIdentificationnumber, IMSI) of a terminal (such as a store clerk) which is always resident under a cell or is initially accessed (such as power on, reset, flying, SIM card insertion) within the coverage area of the small cell.
Disclosure of Invention
The invention aims to provide a method and a device for acquiring an IMSI of a terminal, a small base station and the terminal, which solve the problem that the small base station cannot acquire the IMSI of the terminal which is resident under a cell or is initially accessed in the coverage range of the small base station.
To achieve the above objective, an embodiment of the present invention provides a method for obtaining an IMSI of a terminal, which is applied to a small base station, including:
Under the condition that a target message sent by a terminal to a Mobility management entity (Mobility MANAGEMENT ENTITY, MME) is received, intercepting the target message and sending an identity inquiry request to the terminal; wherein the target message comprises: an attach request message and/or a service request message;
And receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI).
Optionally, before the sending the identity inquiry request to the terminal, the method further includes:
determining a connection state of a communication link between the small cell and a core network
Determining that the target message is the attach request message or the service request message in the case that the connection state is a normal connection state;
And determining that the target message is the attach request message when the connection state is the disconnection state.
Optionally, after receiving the identity inquiry response sent by the terminal, the method further includes one of the following:
If the target message is the attach request message, if the communication link between the small base station and the core network is determined to be in a normal connection state, sending the attach request message to the MME;
If the target message is the attach request message, discarding the attach request message if the communication link between the small base station and the core network is determined to be in a disconnected state;
and sending the service request message to the MME when the target message is the service request message.
Optionally, after receiving the identity inquiry response sent by the terminal, the method further includes:
Transmitting a radio resource control (Radio Resource Control, RRC) connection release message to the terminal if a target condition is satisfied; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal to reselect;
The target condition includes one of:
The communication link between the small base station and the core network is in a disconnected state;
The small base station is only used for acquiring the IMSI of the terminal and receiving the attachment completion message sent by the MME;
the small cell is only used to acquire the IMSI of a terminal and a radio data bearer (Data Radio Bearer, DRB) setup has been completed between the small cell and the terminal.
Optionally, the first indication information includes frequency point information of the target macro base station.
Optionally, the small base station is preconfigured with a frequency point list of the selectable macro base station, and the frequency point information of the target macro base station is one of the frequency point lists.
Optionally, the small base station is preconfigured with a frequency point list of an optional macro base station;
the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
To achieve the above objective, an embodiment of the present invention provides a method for obtaining an IMSI of a terminal, which is applied to a terminal, where the terminal is in a radio signal coverage area of a small base station, and the method includes:
Sending an attachment request message to the small base station under the condition of triggering initial access; or alternatively
And sending a service request message to the small base station under the condition that an upper layer service trigger is received or a paging message is received.
Optionally, the method further comprises:
Receiving an RRC connection release message sent by the small base station; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal;
under the condition that the RRC connection release message carries the first indication information, redirecting to the target macro base station according to the first indication information; or alternatively
And under the condition that the RRC connection release message carries the second indication information, reselecting to the macro base station according to the second indication information.
Optionally, the first indication information includes frequency point information of the target macro base station.
Optionally, the small base station is preconfigured with a frequency point list of the selectable macro base station, and the frequency point information of the target macro base station is one of the frequency point lists.
Optionally, the small base station is preconfigured with a frequency point list of an optional macro base station;
the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
To achieve the above object, an embodiment of the present invention provides an apparatus for acquiring an IMSI of a terminal, which is applied to a small base station, and the apparatus includes:
The mobile management entity comprises a first sending module, a second sending module and a second sending module, wherein the first sending module is used for intercepting a target message sent by a terminal to a Mobility Management Entity (MME) and sending an identity inquiry request to the terminal; wherein the target message comprises: an attach request message and/or a service request message;
The first receiving module is used for receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI).
To achieve the above object, an embodiment of the present invention provides an apparatus for acquiring an IMSI of a terminal, which is applied to a terminal, where the terminal is located in a radio signal coverage area of a small base station, the apparatus includes:
A fifth sending module, configured to send an attach request message to the small base station when the initial access is triggered; or sending a service request message to the small base station when an upper layer service trigger is received or a paging message is received.
To achieve the above object, an embodiment of the present invention provides a small base station, including a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; the processor, when executing the program or instructions, implements the method for obtaining the IMSI of the terminal as described above.
To achieve the above object, an embodiment of the present invention provides a terminal including a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; the processor, when executing the program or instructions, implements the method for obtaining the IMSI of the terminal as described above.
To achieve the above object, an embodiment of the present invention provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps in the method for acquiring a terminal IMSI as described above.
The technical scheme of the invention has the following beneficial effects:
In the scheme, under the condition that a target message sent by a terminal to a Mobility Management Entity (MME) is received, a small base station intercepts the target message and sends an identity inquiry request to the terminal; wherein the target message comprises: an attach request message and/or a service request message; and receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI). Thus, for the terminal which is resident under the cell all the time, when the terminal initiates service data, the small base station can trigger to send an identity inquiry request to the terminal based on the service request sent by the terminal so as to acquire the IMSI fed back by the terminal; for the terminal initially accessed in the coverage area of the small base station, after receiving the attachment request sent by the terminal, the terminal can be triggered to send an identity inquiry request to the terminal so as to acquire the IMSI fed back by the terminal. Therefore, the scheme can solve the problem that the small base station cannot acquire the IMSI of the terminal which is resident under the cell or is initially accessed in the coverage range of the small base station.
Drawings
Fig. 1 is one of flowcharts of a method for acquiring an IMSI of a terminal according to an embodiment of the present invention;
fig. 2 is a second flowchart of a method for obtaining an IMSI of a terminal according to an embodiment of the present invention;
Fig. 3 is a third flowchart of a method for obtaining an IMSI of a terminal according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for obtaining an IMSI of a terminal according to an embodiment of the present invention;
Fig. 5 is a flowchart of a method for obtaining an IMSI of a terminal according to an embodiment of the present invention;
fig. 6 is a block diagram of an apparatus for acquiring an IMSI of a terminal according to an embodiment of the present invention;
Fig. 7 is a block diagram of an apparatus for acquiring an IMSI of a terminal according to another embodiment of the present invention;
fig. 8 is a block diagram of a small cell according to an embodiment of the present invention;
Fig. 9 is a block diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
In addition, the terms "system" and "network" are often used interchangeably herein.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.
As shown in fig. 1, a method for obtaining an IMSI of a terminal according to an embodiment of the present invention is applied to a small base station, and specifically includes the following steps:
Step 101, under the condition that a target message sent by a terminal to a Mobility Management Entity (MME) is received, intercepting the target message and sending an identity inquiry request to the terminal; wherein the target message comprises: an attach request message and/or a service request message;
In the step, the terminal is in the wireless signal coverage area of the small base station, and the terminal sends an attachment request message to the MME through the small base station under the condition of triggering initial access; and under the condition that the terminal receives the upper layer service trigger or the paging message, the terminal can send a service request message to the MME through the small base station. After receiving the attachment request message and/or the service request message, the small base station intercepts the message and sends an identity inquiry request to the terminal according to the message format of the core network message.
Step 102, receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI).
In this step, after receiving the audit query request, the terminal does not know whether the sending body of the identity query request is the MME or the small base station, and therefore, the IMSI is returned to the small base station.
In the above embodiment, for the terminal that resides in the small cell, the small cell may trigger, when the terminal initiates service data, to send an identity query request to the terminal based on a service request sent by the terminal, so as to obtain the IMSI fed back by the terminal; for the terminal initially accessed in the coverage area of the small base station, after receiving the attachment request sent by the terminal, the terminal can be triggered to send an identity inquiry request to the terminal so as to acquire the IMSI fed back by the terminal. Therefore, the scheme can solve the problem that the small base station cannot acquire the IMSI of the terminal which is resident under the cell or is initially accessed in the coverage range of the small base station.
In a specific embodiment, before sending the identity inquiry request to the terminal in step 101, the method further includes:
Determining the connection state of a communication link between the small base station and a core network;
Determining that the target message is the attach request message or the service request message in the case that the connection state is a normal connection state;
And determining that the target message is the attach request message when the connection state is the disconnection state.
In this embodiment, in the case where the communication link between the small cell and the core network is in a normal connection state, the target message is determined to be the attach request message or the service request message. That is, after receiving the attach request message or the service request message, the identity inquiry request may be constructed by simulating the message format of the core network message; and under the condition that the communication link between the small base station and the core network is in a disconnected state, determining that the target message is a service request message. That is, after receiving the service request message sent by the terminal, the identity inquiry request may be constructed by simulating the message format of the core network message.
Further, in a specific embodiment, in step 102, after receiving the identity query response sent by the terminal, the method further includes one of the following:
And if the target message is the attach request message and the communication link between the small base station and the core network is in a normal connection state, sending the attach request message to the MME.
As in fig. 2, a schematic diagram is shown in a normal connection state. Specifically, when the terminal triggers initial access (power on, restarting, inserting), the terminal triggers a cell reselection process, and the terminal synchronizes with the cell of the small base station due to stronger signals of the small base station, receives broadcast messages such as SIB1, and resides in the small base station. After that, the terminal sends an Attach Request (Attach Request) message to the MME through the small base station, and after receiving the Attach Request message, the small base station intercepts the Attach Request and simulates the message format of the core network message to send an Identity query (Identity Request) message to the terminal, so as to Request the terminal to report the IMSI; the terminal returns an identity inquiry response (Identity Response) message to the small base station, wherein the message carries the IMSI information of the terminal; the small base station reads the IMSI information and completes the identification acquisition; the small base station continues to send the Attach Request message to the core network MME; the MME replies an attach accept (ATTACH ACCEPT) message through the small base station; the terminal replies an Attach Complete message to the core network MME through the small base station, so that the Attach process is completed, and the terminal can perform data service under the small base station.
And if the target message is the attachment request message, discarding the attachment request message if the communication link between the small base station and the core network is determined to be in a disconnected state.
As in fig. 3, a schematic diagram is shown in the off state. Specifically, when the terminal triggers initial access (power on, restarting, inserting), the terminal triggers a cell reselection process, and the terminal synchronizes with the cell of the small base station due to stronger signals of the small base station, receives broadcast messages such as SIB1, and resides in the small base station. After that, the terminal sends an Attach Request (Attach Request) message to the MME through the small base station, and after receiving the Attach Request message, the small base station intercepts the Attach Request and discards the Attach Request, and simultaneously simulates the message format of the core network message to send an Identity query (Identity Request) message to the terminal, so as to Request the terminal to report the IMSI; the terminal returns an identity inquiry response (Identity Response) message to the small base station, wherein the message carries the IMSI information of the terminal; and the small base station reads the IMSI information to complete the identification acquisition.
And sending the service request message to the MME when the target message is the service request message.
As shown in fig. 4, which is a schematic diagram in a normal connection state. Specifically, the terminal is in the wireless number-limiting coverage area of the small base station, and resides in the small base station. After the upper layer service of the terminal triggers or receives a paging (paging) message, a service request (Servie Request) access procedure is triggered. After receiving the service Request message, the small base station intercepts the attachment Request and simulates the message format of the core network message to send an Identity query (Identity Request) message to the terminal, thereby requiring the terminal to report the IMSI; the terminal returns an identity inquiry response (Identity Response) message to the small base station, wherein the message carries the IMSI information of the terminal; and the small base station reads the IMSI information to complete the identification acquisition. The small base station continues to send Servie Request messages to the MME; the MME replies an initial context establishment request message to the small base station, triggers the small base station and terminal interaction RRC Connection Reconfiguration (RRC connection reconfiguration) signaling (comprising an RRC reconfiguration message and an RRC connection reconfiguration complete message) to complete DRB establishment; the small base station replies an initial context establishment response message to the MME, so that the service request process is completed, and the terminal can transmit data service under the small base station.
Further, in step 102, after receiving the identity query response sent by the terminal, the method further includes:
transmitting a Radio Resource Control (RRC) connection release message to the terminal when a target condition is satisfied; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal to reselect;
The target condition includes one of:
The communication link between the small base station and the core network is in a disconnected state;
The small base station is only used for acquiring the IMSI of the terminal and receiving the attachment completion message sent by the MME;
the small base station is only used for acquiring the IMSI of the terminal and the wireless data bearer DRB establishment is completed between the small base station and the terminal.
It should be noted that, the small base station side may configure a switch option, where switch option 1 is used to select the small base station to perform IMSI acquisition only, and switch option 2 is used to select the small base station to perform IMSI acquisition and data service transmission simultaneously.
In particular, when the communication link between the small cell and the core network is in a normal connection state, the small cell may send a radio resource control RRC connection release message to the terminal after receiving an attach complete message sent by the MME (as shown in fig. 2) or after completing establishment of the radio data bearer DRB (as shown in fig. 4) in case of enabling switch option 1, so as to release the terminal and instruct the terminal to redirect or reselect to the macro base station.
When the communication between the small base station and the core network is in a disconnected state, the terminal returns an identity inquiry response (Identity Response) message to the small base station, wherein the message carries the IMSI information of the terminal, the small base station reads the IMSI information, and after the acquisition of the identifier is completed, the small base station constructs an RRC connection release message and sends the RRC connection release message to the terminal so as to release the terminal and instruct the terminal to redirect or reselect to the macro base station.
It should be noted that, under the condition that the communication link between the small base station and the core network is in a normal connection state, if the switch option 2 of the small base station is enabled, the small base station can always provide data service for the terminal, and after the small base station monitors that the terminal has no data service, the small base station sends an RRC connection release message to the terminal, and does not limit the terminal to switch to the macro base station.
In a specific embodiment, the first indication information includes frequency point information of the target macro base station.
Specifically, the small cell is preconfigured with a frequency point list of the selectable macro cell, and the frequency point information of the target macro cell is one of the frequency point lists.
It should be noted that, the frequency point list of the optional macro base station is preconfigured on the small base station side, where the configurations of the small base stations can be consistent, and the actual macro base station adjacent frequency distribution situation at each small base station is not needed to be considered.
In specific implementation, one frequency point can be trained or randomly selected from a preset frequency point list of the selectable macro base station; more preferably, the frequency point or the frequency point list of the macro base station where the small base station is actually located can be automatically obtained from the preset frequency point list of the optional macro base station based on an algorithm, and the frequency point is designated based on the frequency point of the macro base station where the small base station is actually located.
In this embodiment, the first indication message includes an Information Element (IE) specifying a frequency point message (redirectedCarrierInfo) to cause the terminal to be redirected to the target macro base station according to the first indication information. Here redirectedCarrierInfo indicates that the terminal is to attempt to camp on a designated system/frequency point after leaving the connected state.
In a specific embodiment, the small cell is preconfigured with a frequency point list of the selectable macro cell; the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
For example, a frequency point list of the selectable macro base stations is pre-configured at the small base station side, where the configurations of the small base stations can be consistent, and the adjacent frequency distribution situation of the actual macro base stations at the small base stations is not needed to be considered. The reselection priority information comprises all the frequency points of the preconfigured selectable macro base stations and is configured to be high in priority, and meanwhile, the reselection priority information also needs to comprise the frequency points of the small base stations and is configured to be low in priority.
In this embodiment, the second indication message may include an Information Element (IE) specifying a reselection priority message (idleModeMobilityControlInfo) to cause the terminal to reselect to the macro base station based on the second indication information. Here idleModeMobilityControlInfo indicates that the terminal tries to reselect to a high priority system/frequency point after leaving the connected state.
As shown in fig. 2, a method for obtaining an IMSI of a terminal according to an embodiment of the present invention is applied to a terminal, where the terminal is in a wireless signal coverage area of a small base station, and the method includes:
Step 201, under the condition of triggering initial access, sending an attachment request message to the small base station; or sending a service request message to the small base station under the condition that an upper layer service trigger is received or a paging message is received.
In the embodiment, under the condition that the terminal receives the upper layer service trigger or the paging message, the terminal triggers the small base station to send an identity inquiry request to the terminal, and the terminal feeds back the IMSI to the small base station based on the identity inquiry request; or when the terminal is initially accessed in the coverage area of the small base station, after an attachment request is sent to the small base station, the small base station is triggered to send an identity inquiry request to the terminal so as to acquire the IMSI fed back by the terminal. Therefore, the scheme can solve the problem that the small base station cannot acquire the IMSI of the terminal which is resident under the cell or is initially accessed in the coverage range of the small base station.
In a specific embodiment, the method further comprises:
Receiving an RRC connection release message sent by the small base station; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal;
under the condition that the RRC connection release message carries the first indication information, redirecting to the target macro base station according to the first indication information; or alternatively
And under the condition that the RRC connection release message carries the second indication information, reselecting to the macro base station according to the second indication information.
Specifically, the first indication information includes frequency point information of the target macro base station.
The small base station is preconfigured with a frequency point list of the selectable macro base station, and the frequency point information of the target macro base station is one of the frequency point lists.
In this embodiment, the first indication message includes an Information Element (IE) specifying a frequency point message (redirectedCarrierInfo) to cause the terminal to be redirected to the target macro base station according to the first indication information. Here redirectedCarrierInfo indicates that the terminal is to attempt to camp on a designated system/frequency point after leaving the connected state.
Specifically, the small base station is preconfigured with a frequency point list of an optional macro base station; the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
For example, the reselection priority information includes all the frequency points of the preconfigured optional macro base stations and is configured to be high in priority, and meanwhile, the reselection priority information also needs to include the frequency points of the small base stations and is configured to be low in priority.
In this embodiment, the second indication message may include an Information Element (IE) specifying a reselection priority message (idleModeMobilityControlInfo) to cause the terminal to reselect to the macro base station based on the second indication information. Here idleModeMobilityControlInfo indicates that the terminal tries to reselect to a high priority system/frequency point after leaving the connected state.
As shown in fig. 6, an apparatus for obtaining an IMSI of a terminal according to an embodiment of the present invention is applied to a small base station, where the apparatus 600 includes:
A first sending module 601, configured to intercept a target message sent by a terminal to a mobility management entity MME, and send an identity query request to the terminal, when the target message is received; wherein the target message comprises: an attach request message and/or a service request message;
the first receiving module 602 is configured to receive an identity query response sent by the terminal, where the identity query response carries an international mobile subscriber identity IMSI.
Optionally, the apparatus 600 further includes:
A first determining module, configured to determine a connection state of a communication link between the small base station and a core network;
a second determining module, configured to determine that the target message is the attach request message or the service request message when the connection state is a normal connection state;
And a third determining module, configured to determine that the target message is the attach request message when the connection state is a disconnection state.
Optionally, the apparatus 600 includes:
A second sending module, configured to send the attach request message to the MME if it is determined that the communication link between the small cell and the core network is in a normal connection state if the target message is the attach request message;
The first processing module is configured to discard the attach request message if it is determined that the communication link between the small cell and the core network is in a disconnected state if the target message is the attach request message;
And a third sending module, configured to send the service request message to the MME when the target message is the service request message.
Optionally, the apparatus 600 includes:
a fourth sending module, configured to send a radio resource control RRC connection release message to the terminal when a target condition is satisfied; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal to reselect;
The target condition includes one of:
The communication link between the small base station and the core network is in a disconnected state;
The small base station is only used for acquiring the IMSI of the terminal and receiving the attachment completion message sent by the MME;
the small base station is only used for acquiring the IMSI of the terminal and the wireless data bearer DRB establishment is completed between the small base station and the terminal.
Optionally, the first indication information includes frequency point information of the target macro base station.
Optionally, the small base station is preconfigured with a frequency point list of the selectable macro base station, and the frequency point information of the target macro base station is one of the frequency point lists.
Optionally, the small base station is preconfigured with a frequency point list of an optional macro base station;
the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
The apparatus 600 provided in the embodiment of the present invention may execute the method embodiment on the small cell side, and its implementation principle and technical effects are similar, and this embodiment will not be repeated here.
As shown in fig. 7, a device for acquiring an IMSI of a terminal according to an embodiment of the present invention is applied to a terminal, where the terminal is in a wireless signal coverage area of a small base station, and the device includes:
A fifth sending module 701, configured to send an attach request message to the small base station if the initial access is triggered; or sending a service request message to the small base station when an upper layer service trigger is received or a paging message is received.
Optionally, the apparatus 700 further includes:
The second receiving module is used for receiving the RRC connection release message sent by the small base station; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal;
The first switching module is used for redirecting to the target macro base station according to the first indication information under the condition that the RRC connection release message carries the first indication information; or alternatively
And the second switching module is used for reselecting to the macro base station according to the second indication information under the condition that the RRC connection release message carries the second indication information.
Optionally, the first indication information includes frequency point information of the target macro base station.
Optionally, the small base station is preconfigured with a frequency point list of the selectable macro base station, and the frequency point information of the target macro base station is one of the frequency point lists.
Optionally, the small base station is preconfigured with a frequency point list of an optional macro base station;
the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
The apparatus 700 provided in the embodiment of the present invention may execute the method embodiment on the terminal side, and its implementation principle and technical effects are similar, and this embodiment will not be described herein.
A small cell according to another embodiment of the present invention, as shown in fig. 8, includes a transceiver 810, a processor 800, a memory 820, and a program or instructions stored on the memory 820 and executable on the processor 800; the processor 800, when executing the program or instructions, performs the following steps:
Under the condition that a target message sent by a terminal to a Mobility Management Entity (MME) is received, intercepting the target message and sending an identity inquiry request to the terminal; wherein the target message comprises: an attach request message and/or a service request message;
And receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI).
The transceiver 810 is configured to receive and transmit data under the control of the processor 800.
Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 800 and various circuits of memory represented by memory 820, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 830 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 700 in performing operations.
Optionally, the processor 800 performs the following steps when executing the program or instructions:
Determining the connection state of a communication link between the small base station and a core network;
Determining that the target message is the attach request message or the service request message in the case that the connection state is a normal connection state;
And determining that the target message is the attach request message when the connection state is the disconnection state.
Optionally, the processor 800 performs the following steps when executing the program or instructions:
If the target message is the attach request message, if the communication link between the small base station and the core network is determined to be in a normal connection state, sending the attach request message to the MME;
If the target message is the attach request message, discarding the attach request message if the communication link between the small base station and the core network is determined to be in a disconnected state;
and sending the service request message to the MME when the target message is the service request message.
Optionally, the processor 800 performs the following steps when executing the program or instructions:
transmitting a Radio Resource Control (RRC) connection release message to the terminal when a target condition is satisfied; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal to reselect;
The target condition includes one of:
The communication link between the small base station and the core network is in a disconnected state;
The small base station is only used for acquiring the IMSI of the terminal and receiving the attachment completion message sent by the MME;
the small base station is only used for acquiring the IMSI of the terminal and the wireless data bearer DRB establishment is completed between the small base station and the terminal.
Optionally, the first indication information includes frequency point information of the target macro base station.
Optionally, the small base station is preconfigured with a frequency point list of the selectable macro base station, and the frequency point information of the target macro base station is one of the frequency point lists.
Optionally, the small base station is preconfigured with a frequency point list of an optional macro base station;
the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
The terminal of the embodiment of the present invention is in the coverage area of the wireless signal of the small cell, as shown in fig. 9, and includes a transceiver 910, a processor 900, a memory 920, and a program or instructions stored in the memory 920 and executable on the processor 900; the processor 900, when executing the program or instructions, performs the following steps:
Sending an attachment request message to the small base station under the condition of triggering initial access; or alternatively
And sending a service request message to the small base station under the condition that an upper layer service trigger is received or a paging message is received.
The transceiver 910 is configured to receive and transmit data under the control of the processor 900.
Wherein in fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 900 and various circuits of memory represented by memory 920, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 910 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.
Optionally, the processor 900 when executing the program or instructions implements the following steps:
Receiving an RRC connection release message sent by the small base station; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal;
under the condition that the RRC connection release message carries the first indication information, redirecting to the target macro base station according to the first indication information; or alternatively
And under the condition that the RRC connection release message carries the second indication information, reselecting to the macro base station according to the second indication information.
Optionally, the first indication information includes frequency point information of the target macro base station.
Optionally, the small base station is preconfigured with a frequency point list of the selectable macro base station, and the frequency point information of the target macro base station is one of the frequency point lists.
Optionally, the small base station is preconfigured with a frequency point list of an optional macro base station;
the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
In the above embodiment, when the terminal receives the upper layer service trigger or the paging message, the terminal triggers the small base station to send an identity inquiry request to the terminal, and the terminal feeds back the IMSI to the small base station based on the identity inquiry request; or when the terminal is initially accessed in the coverage area of the small base station, after an attachment request is sent to the small base station, the small base station is triggered to send an identity inquiry request to the terminal so as to acquire the IMSI fed back by the terminal. Therefore, the scheme can solve the problem that the small base station cannot acquire the IMSI of the terminal which is resident under the cell or is initially accessed in the coverage range of the small base station.
The readable storage medium of the embodiment of the present invention stores a program or an instruction, where the program or the instruction, when executed by a processor, implements the steps in the method for obtaining the IMSI of the terminal as described above, and can achieve the same technical effects, so that repetition is avoided and no further description is given here. The computer readable storage medium is, for example, a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.
It is further noted that the terminals described in this specification include, but are not limited to, smartphones, tablets, etc., and that many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence.
In an embodiment of the invention, the modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be organized as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices.
Where a module may be implemented in software, taking into account the level of existing hardware technology, a module may be implemented in software, and one skilled in the art may, without regard to cost, build corresponding hardware circuitry, including conventional Very Large Scale Integration (VLSI) circuits or gate arrays, and existing semiconductors such as logic chips, transistors, or other discrete components, to achieve the corresponding functions. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
The exemplary embodiments described above are described with reference to the drawings, many different forms and embodiments are possible without departing from the spirit and teachings of the present invention, and therefore, the present invention should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will convey the scope of the invention to those skilled in the art. In the drawings, the size of the elements and relative sizes may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Unless otherwise indicated, a range of values includes the upper and lower limits of the range and any subranges therebetween.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (17)
1. The method for acquiring the terminal IMSI is characterized by being applied to a small base station and comprising the following steps:
Under the condition that a target message sent by a terminal to a Mobility Management Entity (MME) is received, intercepting the target message and sending an identity inquiry request to the terminal; wherein the target message comprises: an attach request message and/or a service request message;
And receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI).
2. The method for obtaining an IMSI of a terminal according to claim 1, wherein before the sending an identity query request to the terminal, the method further comprises:
Determining the connection state of a communication link between the small base station and a core network;
Determining that the target message is the attach request message or the service request message in the case that the connection state is a normal connection state;
And determining that the target message is the attach request message when the connection state is the disconnection state.
3. The method according to claim 2, wherein after receiving the identity query response sent by the terminal, the method further comprises one of the following steps:
If the target message is the attach request message, if the communication link between the small base station and the core network is determined to be in a normal connection state, sending the attach request message to the MME;
If the target message is the attach request message, discarding the attach request message if the communication link between the small base station and the core network is determined to be in a disconnected state;
and sending the service request message to the MME when the target message is the service request message.
4. The method for obtaining an IMSI of a terminal according to claim 2, wherein after receiving an identity query response sent by the terminal, the method further comprises:
transmitting a Radio Resource Control (RRC) connection release message to the terminal when a target condition is satisfied; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal to reselect;
The target condition includes one of:
The communication link between the small base station and the core network is in a disconnected state;
The small base station is only used for acquiring the IMSI of the terminal and receiving the attachment completion message sent by the MME;
the small base station is only used for acquiring the IMSI of the terminal and the wireless data bearer DRB establishment is completed between the small base station and the terminal.
5. The method according to claim 4, wherein the first indication information includes frequency point information of the target macro base station.
6. The method according to claim 5, wherein the small base station is preconfigured with a frequency point list of optional macro base stations, and the frequency point information of the target macro base station is one of the frequency point lists.
7. The method for obtaining the IMSI of the terminal according to claim 4, wherein the small base station is preconfigured with a frequency point list of an optional macro base station;
the second indication information includes reselection priority information including: the frequency point priority of the selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
8. A method for obtaining an IMSI of a terminal, applied to a terminal, where the terminal is in a radio signal coverage area of a small base station, the method comprising:
Sending an attachment request message to the small base station under the condition of triggering initial access; or alternatively
And sending a service request message to the small base station under the condition that an upper layer service trigger is received or a paging message is received.
9. The method for obtaining an IMSI of a terminal according to claim 8, further comprising:
Receiving an RRC connection release message sent by the small base station; the RRC connection release message carries first indication information or second indication information, wherein the first indication information is used for indicating the terminal to redirect, and the second indication information is used for indicating the terminal;
under the condition that the RRC connection release message carries the first indication information, redirecting to a target macro base station according to the first indication information; or alternatively
And under the condition that the RRC connection release message carries the second indication information, reselecting to the macro base station according to the second indication information.
10. The method according to claim 9, wherein the first indication information includes frequency point information of the target macro base station.
11. The method according to claim 10, wherein the small 5 base station is preconfigured with a frequency point list of optional macro base stations, and the frequency point information of the target macro base station is one of the frequency point lists.
12. The method for obtaining the IMSI of the terminal according to claim 9, wherein the small base station is preconfigured with a frequency point list of an optional macro base station;
The second indication information includes reselection priority information including: the frequency point priority of the 0 selectable macro base station and the frequency point priority of the small base station, wherein the frequency point priority of the selectable macro base station is higher than the frequency point priority of the small base station.
13. An apparatus for obtaining an IMSI of a terminal, applied to a small base station, the apparatus comprising:
The first sending module is used for intercepting the target message and sending an identity inquiry request to the terminal under the condition that the target message sent by the terminal to the mobility management entity MME is received; wherein the target message comprises: an attach request message and/or a service request message;
The first receiving module is used for receiving an identity inquiry response sent by the terminal, wherein the identity inquiry response carries an International Mobile Subscriber Identity (IMSI).
14. An apparatus for obtaining an IMSI of a terminal, applied to the terminal, where the terminal is located in a radio signal coverage area of a small base station, the apparatus comprising:
A fifth sending module, configured to send an attach request message to the small base station when the initial access is triggered; or sending a service request message to the small base station when an upper layer service trigger is received or a paging message is received.
15. A small cell, comprising: a transceiver, a processor, a memory, and a program or instructions stored on the memory 5 and executable on the processor; a method for obtaining an IMSI of a terminal according to any one of claims 1-7, characterized in that the processor implements the method for obtaining an IMSI of a terminal when executing the program or instructions.
16. A terminal, comprising: a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; a method of obtaining a terminal IMSI according to any of claims 8-12, wherein the processor, when executing the program or instructions, is implemented.
17. A readable storage medium having stored thereon a program or instructions which when executed by a processor performs the steps of the method of obtaining a terminal IMSI according to any of claims 1-7 or the steps of the method of obtaining a terminal IMSI according to any of claims 8-12.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211548522.6A CN118158681A (en) | 2022-12-05 | 2022-12-05 | Method and device for acquiring IMSI of terminal, small base station and terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211548522.6A CN118158681A (en) | 2022-12-05 | 2022-12-05 | Method and device for acquiring IMSI of terminal, small base station and terminal |
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| CN118158681A true CN118158681A (en) | 2024-06-07 |
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| CN202211548522.6A Pending CN118158681A (en) | 2022-12-05 | 2022-12-05 | Method and device for acquiring IMSI of terminal, small base station and terminal |
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| CN (1) | CN118158681A (en) |
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