CN113949997A - Active paging method and memory controller - Google Patents

Abstract

The invention discloses an activation paging method and a storage controller. The method includes: in response to the ISR activation information of the signaling reduction mechanism in the idle state of the mobile terminal sent by the mobility management entity MME, judging whether the mobile terminal activates the ISR in the local network; when it is determined that the mobile terminal activates the ISR in the local network, Start a timer, wherein the duration of the timer is the same as the duration of the periodic location update; before the timer expires, if there is an incoming call from the mobile terminal, paging is performed preferentially within the location area indicated by the location area identifier of the mobile terminal . According to the method provided by the embodiment of the present invention, air interface resources are saved, exchange information between network devices is reduced, and paging efficiency is improved.

Description

Activate paging method and storage controller

technical field

The present invention relates to the technical field of communications, in particular to an activation paging method and a storage controller.

Background technique

In the Evolved Packet System (EPS) system, in order to reduce the air interface signaling between the mobile terminal (User Equipment, UE) and the core network, a signaling reduction mechanism in idle state (Idle mode Signaling Reduction, ISR) is introduced. Function.

After the mobile terminal activates this function, when the mobile terminal has an incoming call, the mobile switching center (Mobile Switching Centre, MSC) sends a paging request to the mobility management entity (Mobility Management Entity, MME), MME in the mobile terminal's tracking area identification list ( Paging is performed within the scope of Tracking Area Identity List, TAI List), and the paging request is sent to the Serving GPRS Support Node (SGSN), and the SGSN performs paging within the scope of the Routing Area Identity (RAI). , after the mobile terminal receives the paging request from the SGSN, it connects to the MSC to perform a paging response to establish a call. Because the Location Area Identity (LAI) does not change, the paging request needs to be performed in two networks, which consumes air interface resources. , to increase the interactive information between network devices.

SUMMARY OF THE INVENTION

Therefore, the present invention provides a method for activating paging and a storage controller, so as to solve the problem of consuming air interface resources due to the fact that after the mobile terminal activates the ISR function, the paging request needs to be carried out in two networks in the prior art, and the network increases The problem of interactive information between devices.

In order to achieve the above object, a first aspect of the present invention provides a method for activating paging, including: in response to the ISR activation information of the signaling reduction mechanism in the idle state of the mobile terminal sent by the mobility management entity MME, judging whether the mobile terminal is activated in the local network ISR; when it is determined that the mobile terminal activates the ISR in the local network, start a timer, wherein the duration of the timer is the same as the duration of the periodic location update; before the timer expires, if there is an incoming call from the mobile terminal, it will be prioritized in The mobile terminal performs paging within the range of the location area indicated by the location area identifier of the mobile terminal.

A second aspect of the present invention provides a storage controller MSC, comprising: a judging module for judging whether the mobile terminal is activated in the local network in response to the activation information of the signaling reduction mechanism ISR in the idle state of the mobile terminal sent by the mobility management entity MME ISR; the timing module is used to start the timer when it is determined that the mobile terminal activates the ISR in the local network, wherein the duration of the timer is the same as the duration of the periodic location update; the paging module is used to start the timer when the timer times out Before, if there is an incoming call from the mobile terminal, paging is performed preferentially within the range of the location area indicated by the location area identifier of the mobile terminal.

The present invention has the following advantages: according to the activation paging method and the storage controller in the embodiment of the present invention, after the MSC receives the mobile terminal ISR activation information sent by the MME, if it is determined that the mobile terminal activates the ISR in the local network, the MSC starts a timer The duration of the timer is the same as that of the periodic LAU. When there is an incoming call before the timer expires, the LAI is given priority for paging instead of sending a paging request to the MME. Air interface resources, reduce the exchange of information between network devices, and improve paging efficiency.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention.

1 is a flowchart of a method for activating paging provided by an embodiment of the present invention;

2 is a schematic structural diagram of a storage controller MSC provided by an embodiment of the present invention;

3 is a more detailed schematic flowchart of a method for activating paging provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising" does not preclude the presence of additional identical elements in the process, method, article or device that includes the element.

A typical Circuit Switched Fallback (CSFB) business process mainly includes joint attach, location update, calling (Mobile Origination Call, MO) CSFB process, called (Mobile Termination Call, MT) CSFB process, and detachment and so on. The attachment procedure of the CSFB-enabled user's mobile terminal is implemented based on the combined GPRS/International Mobile Subscriber Identification Number (IMSI) attachment procedure.

The multi-mode single-standby handheld terminal carries the indication of supporting the CSFB capability in the attach request message sent to the MME. After receiving the joint attach request from the user, the MME will derive the Visited Location Registor (VLR) of its related Circuit Switched (CS) domain while performing the Evolved Packet System (EPS) attachment. ) information, and initiates a location update request to the VLR. After the VLR receives the location update request, it will mark the user as having EPS attached, and save the Internet Protocol (Internet Protocol, IP) address of the user's MME,

In this way, the SGs association between the user's VLR and the MME is created in the VLR. in,

The SGs interface is the interface between the MSC/VLR and the MME, through which the joint attachment function can be implemented.

Subsequently, the MSC Server/VLR will update the CS domain location and transmit the user's Temporary Mobile Subscriber Identity (TMSI) and LAI (Location Area Identifier) to the MME, thereby establishing the SGs association in the MME. Finally, the MME includes the information such as TMSI and LAI allocated by the VLR to the user in the attach request accept message and sends it to the UE, which indicates that the user's joint attach has been successful. After the joint attachment is successful, the CSFB-enabled user can process circuit domain services in the LTE network.

In the EPS system, in order to reduce the air interface signaling between the UE and the core network, the function of ISR (Idle mode Signaling Reduction) is introduced. When this function is activated, there are both the Evolved Universal Terrestrial Radio Access Network (UTRAN)/Radio Access Network (GSM EDGE Radio Access Network, GERAN) and the Evolved UMTS Terrestrial Radio Access Network (Evolved UMTSTerrestrial). A mobile terminal (User Equipment, UE) with Radio Access Network (E-UTRAN) access function can simultaneously register with the MME and the General Packet Radio service (General Packet Radio service, GPRS) Serving GPRS Support Node (SGSN) . In this way, when the UE moves under two different access networks, the UE will not initiate a Routing Area Update (RAU) or Tracking Area Update (RAU) across radio access technologies (Inter Radio Access Technology, Inter RAT). Tracking Area Update, TAU), thereby reducing unnecessary signaling.

At present, a mobile terminal with ISR capability is firstly attached to the 4th Generation Mobile Communication Technology (4G) network. ISR is not activated at this time. When the mobile terminal moves to the edge of the 4G network coverage and the 2G/ When the mobile terminal is within the coverage of the 3G network, the mobile terminal camps on the 2G/3G network. If the LAI of the mobile terminal camping on the 2G/3G network cell is the same as the LAI of the joint attachment, the mobile terminal does not perform location update (Location Area Update, LAU), The MSC does not delete the SGs interface, and the mobile terminal performs RAU. After receiving the RAU request, the SGSN sends a context request message to the MME. After receiving the context response message from the MME, the SGSN sends a Routing Area Update (RAU) acceptance message to the mobile terminal. , which contains the ISR activation indication. The mobile terminal activates the ISR. At this time, when the mobile terminal has an incoming call, the MSC sends a paging request to the MME, and the MME performs paging within the range of the mobile terminal's TAI list, and sends the paging request to the SGSN, which is within the RAI range. For paging, after the mobile terminal receives the paging request from the SGSN, it connects to the MSC to respond to the paging and establish a call. Because the LAI does not change, the paging request needs to be performed in two networks, which consumes air interface resources and increases the number of network devices. interactive information.

For better understanding of the present invention, the following will describe in detail the paging activation method according to the embodiments of the present invention with reference to the accompanying drawings. It should be noted that these embodiments are not intended to limit the scope of the disclosure of the present invention.

FIG. 1 is a flowchart illustrating an activation paging method according to an embodiment of the present invention. As shown in FIG. 1 , the method for activating paging in this embodiment of the present invention includes the following steps.

S110, in response to the ISR activation information of the signaling reduction mechanism in the idle state of the mobile terminal sent by the mobility management entity MME, determine whether the mobile terminal activates the ISR in the local network.

S120, when it is determined that the mobile terminal activates the ISR in the local network, start a timer, wherein the duration of the timer is the same as the duration of the periodic location update;

S130: Before the timer expires, if there is an incoming call from the mobile terminal, paging is performed preferentially within the range of the location area indicated by the location area identifier of the mobile terminal.

According to the activation paging method of the embodiment of the present invention, after the MSC receives the mobile terminal ISR activation information sent by the MME, if it determines that the mobile terminal activates the ISR in its own network, the MSC starts a timer, which is the same as the periodic LAU duration. When there is an incoming call before the timer times out, it will give priority to paging at the LAI instead of sending a paging request to the MME, so as to avoid the paging request being carried out in two networks, thus saving air interface resources, reducing the exchange of information between network devices, and improving the activation of paging. call efficiency.

In some embodiments, before the timer expires, activating the paging method further includes: S11, if the mobile terminal does not respond, directly sending a paging request to the MME.

In this embodiment, when there is an incoming call before the timer expires, the LAI is prioritized for paging, and if the mobile terminal does not respond, the paging is sent to the MME, thereby saving air interface resources, reducing the exchange of information between network devices, and improving activation. paging efficiency.

In some embodiments, before the timer expires, activating the paging method further includes: S21, if a location update request from the MME is received, closing the timer; S22, in the case of an incoming call from the mobile terminal, directly sending a message to the MME paging request.

In this step, the MSC closes the timer after receiving the location update of the MME before the timer expires, and directly sends paging to the MME when there is an incoming call, so as to avoid the paging request being performed in two networks, thereby saving air interface resources and reducing The exchange of information between network devices improves the efficiency of activation paging.

In some embodiments, before the timer expires, the activating paging method further includes: S31, in the case of determining that the periodic tracking area update TAU timer expires and receiving the location update request of the mobile terminal, delete the SGs interface, To enable the mobile terminal to activate the ISR; S32, if the mobile terminal has an incoming call, the mobile terminal is directly paged on the 2G/3G network.

In this step, before the timer expires, if the periodic TAU timer expires, the mobile terminal performs LAU, the MSC deletes the SGs interface, and the mobile terminal deactivates the ISR. When there is an incoming call, the MSC directly pages the mobile terminal in the 2/3G network. Therefore, it is possible to avoid paging requests being performed in two networks, save air interface resources, reduce exchange information between network devices, and improve the efficiency of activating paging.

In some embodiments, after the timer expires, activating the paging method further includes: S41, if the mobile terminal has an incoming call, send a paging request directly to the MME, and notify the MME that it does not need to send a paging request to the SGSN.

In this step, the MSC directly sends a paging request to the MME when there is an incoming call after the timer expires, and notifies that it is not necessary to send a paging request to the SGSN, so as to avoid the paging request being carried out in two networks, save air interface resources, reduce The exchange of information between network devices improves the efficiency of activation paging.

According to the activation paging method of the embodiment of the present invention, after receiving the ISR activation information of the mobile terminal sent by the MME, the MSC determines that the mobile terminal activates the ISR in its own network, and the MSC starts a timer, which has the same duration as the periodic LAU, and when the timer expires When there is an incoming call before, paging is performed on the LAI first, and if there is no response, the paging is sent to the MME. The MSC closes the timer after receiving the location update of the MME before the timer expires, and directly sends paging to the MME when there is an incoming call. If the periodic TAU timer expires before the timer expires, the mobile terminal performs LAU, the MSC deletes the SGs interface, and the mobile terminal deactivates the ISR. When there is an incoming call, the MSC directly pages the mobile terminal in the 2/3G network. The MSC directly sends a paging request to the MME when there is an incoming call after the timer expires, and notifies that it is not necessary to send a paging request to the SGSN, so as to avoid the paging request being performed in two networks, save air interface resources, and reduce the number of network devices. Exchange information to improve activation paging efficiency.

The storage controller MSC according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 2 shows a schematic structural diagram of a storage controller MSC provided according to an embodiment of the present invention. As shown in FIG. 2 , the storage controller MSC200 includes the following modules.

The judging module 210 is used for judging whether the mobile terminal activates the ISR in the local network in response to the ISR activation information of the signaling reduction mechanism in the idle state of the mobile terminal sent by the mobility management entity MME.

The timing module 220 is configured to start a timer when it is determined that the mobile terminal activates the ISR in the local network, wherein the duration of the timer is the same as the duration of the periodic location update.

The paging module 230 is configured to preferentially perform paging within the range of the location area indicated by the location area identifier of the mobile terminal if there is an incoming call from the mobile terminal before the timer expires.

In some embodiments, the paging module 230 is further configured to directly send a paging request to the MME if the mobile terminal does not respond before the timer expires.

In some embodiments, the timing module 220 is further configured to close the timer if a location update request from the MME is received before the timer expires; the paging module 230 is further configured to: Send a paging request directly to the MME.

In some embodiments, the storage controller MSC of the embodiment of the present invention further includes: a deletion module, configured to determine that the periodic tracking area update TAU timer expires before the timer expires, and receive a location update request from the mobile terminal In the case of , the SGs interface is deleted so that the mobile terminal activates the ISR; the paging module 230 is also used for directly paging the mobile terminal on the 2G/3G network if the mobile terminal has an incoming call.

In some embodiments, the paging module 230 is further configured to directly send a paging request to the MME if the mobile terminal has an incoming call after the timer expires, and notify the MME that it does not need to send a paging request to the SGSN.

According to the storage controller MSC of the embodiment of the present invention, after the MSC receives the mobile terminal ISR activation information sent by the MME, if it determines that the mobile terminal activates the ISR in its own network, the MSC starts a timer, which is the same as the periodic LAU duration. When there is an incoming call before the timer times out, it will give priority to paging at the LAI instead of sending a paging request to the MME, so as to avoid the paging request being carried out in two networks, thus saving air interface resources, reducing the exchange of information between network devices, and improving activation. paging efficiency.

The activation paging method and the storage controller MSC in the embodiments of the present invention can optimize the ISR activation paging. Exemplarily, the mobile terminal is a 4G multi-mode card, and the CSFB technology is selected to implement voice calls.

When the mobile terminal is powered on, the joint attachment process of the 4G multimode card is started first, the 4G multimode card sends a joint attachment message to the MME, the MME sends a location update request to the MSC, and the VLR sends the 4G multimode card location update process to the HLR.

After the joint attachment process is completed, when the mobile terminal moves to the edge of the 4G network coverage and within the 2G/3G network coverage, the mobile terminal camps on the 2G/3G network. The attached LAI is the same, the mobile terminal does not perform LAU, the MSC does not delete the SGs interface, the mobile terminal performs RAU, and the SGSN sends a context request message to the MME after receiving the RAU request, and the MME sends a request to the MSC to query the status of the SGs interface of the mobile terminal, and the MSC returns Mobile terminal SGs interface status, MME sends context response information to SGSN, including ISR activation indication, SGSN sends context response information to MME to clarify ISR activation.

After receiving the ISR activation information, the MME sends the mobile terminal ISR activation information to the MSC, including the mobile terminal identification, the ISR activation and the network information where it resides during activation.

After the MSC receives the mobile terminal ISR activation information sent by the MME, it determines that the mobile terminal activates the ISR on its own network, and the MSC starts a timer. The LAI pages the mobile terminal, and if the mobile terminal does not respond, then sends the page to the MME. The MSC closes the timer after receiving the location update of the MME before the timer expires, and directly sends paging to the MME when there is an incoming call. If the periodic TAU timer expires before the timer expires, the mobile terminal performs LAU, the MSC deletes the SGs interface, and the mobile terminal deactivates the ISR. When there is an incoming call, the MSC directly pages the mobile terminal in the 2G/3G network. The MSC directly sends a paging request to the MME when there is an incoming call after the timer expires, and notifies that it is not necessary to send a paging request to the SGSN.

Through the above processing flow, it can be avoided that the paging request is performed in two networks, thereby saving air interface resources, reducing the exchange of information between network devices, and improving the efficiency of activating paging.

FIG. 3 is a more detailed flowchart illustrating an activation paging method according to some exemplary embodiments of the present invention.

In some embodiments, the mobile terminal may be a 4th Generation Mobile Communication Technology (The 4th Generation Mobile Communication Technology, 4G) multi-mode card, and the 4G multi-mode card selects the CSFB technology to implement voice calls. The specific process of the activation paging method according to the embodiment of the present invention is as follows:

S301, when the mobile terminal is powered on, start the joint attachment process of the 4G multi-mode card.

In this step, after the mobile terminal is powered on, the 4G multi-mode card is activated to send an attach request (AttachRequest) message to the MME. The parameter carried is the Attach Type, which is used to indicate that this is a joint Evolved Packet System (EPS)/International Mobile Subscriber Identification Number (IMSI) attach procedure, and the parameter indicates the mobile terminal With Circuit Switched Fallback (CS Fallback) capability.

S302, the MME sends a location update request message (SGsAP-LOCATION-UPDATE-REQUEST) to the corresponding VLR.

In this step, the location update request message includes parameters such as a new location area identifier (Location AreaIdentify, new LAI), the IMSI of the 4G multimode card, the MME name (MME Name), and the location update type (LocationUpdate Type).

S303, the VLR stores the MME information, and creates an association with the SGs of the 4G multimode card under the MME.

S304, the VLR initiates a process of updating the location of the 4G multi-mode card to the HLR according to the user information and the location area information.

S305, the VLR returns confirmation information to the MME.

S306, the MME sends an attach accept (Attach Accept) message to the mobile terminal to complete the joint attachment.

S307, when the mobile terminal moves to the edge of the coverage of the 4G network and within the coverage of the 2G/3G network, the mobile terminal resides on the 2G/3G network.

In the embodiment of the present invention, if the LAI of the 2G/3G network cell where the mobile terminal resides is the same as the LAI of the joint attachment, the mobile terminal does not perform LAU, and the MSC does not delete the SGs interface.

S308, the mobile terminal sends RAU request information to the SGSN.

S309, the SGSN sends context request information to the MME after receiving the RAU request.

S310, the MME sends a request to the MSC for querying the interface status of the SGs of the mobile terminal.

S311, the MSC returns the state of the SGs interface of the mobile terminal to an active state.

S312, the MME sends context response information to the SGSN, including an ISR activation indication.

S313 , the SGSN sends context response information to the MME to clarify that the ISR is activated.

S314: After receiving the ISR activation information, the MME sends the mobile terminal ISR activation information to the MSC.

The activation information includes: the mobile terminal identifier, the ISR activation and the network information where it resides during activation.

S315 , after the MSC receives the mobile terminal ISR activation information sent by the MME, if it determines that the mobile terminal activates the ISR in the local network, the MSC starts a timer, and the duration of the timer is the same as that of the periodic LAU.

Through the above steps S301-S305, the mobile terminal interacts with the network side, and completes the attachment process and the ISR activation process of the mobile terminal. The MSC determines that the mobile terminal activates the ISR in its own network and starts a timer. The duration of the timer is equal to The periodical LAU duration is the same, which is used in the subsequent processing flow of the activation paging method of the present invention.

In the subsequent processing flow of the activation paging method, before the timer expires, when the mobile terminal has an incoming call, the MSC will give priority to paging at the LAI, and if the mobile terminal does not respond, it will send the paging to the MME; before the timer expires, the MSC will If the mobile terminal location update information of the MME is received, the timer is closed, and a paging is directly sent to the MME when there is an incoming call; before the timer expires, if the periodic TAU timer expires, the mobile terminal performs LAU and sends a LAU request to the MSC ; The MSC deletes the SGs interface, and the mobile terminal deactivates the ISR. When there is an incoming call, the MSC directly pages the mobile terminal on the 2G/3G network; when the MSC has an incoming call after the timer expires, it directly sends a paging request to the MME, and informs the MME that it does not need to send a paging request to the SGSN. Therefore, it can be avoided that the paging request is performed in the two networks, thereby saving air interface resources, reducing the exchange information between network devices, and improving the efficiency of activating paging.

It is to be understood that the present invention is not limited to the specific configurations and processes described in the above embodiments and shown in the figures. For the convenience and brevity of the description, the detailed description of the known method is omitted here, and the specific working process of the system, module and unit described above may refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

FIG. 4 shows a schematic structural diagram of an electronic device according to an embodiment of the present invention.

4, an embodiment of the present application provides an electronic device, which includes:

one or more processors 401;

The memory 402, which stores one or more programs, when the one or more programs are executed by one or more processors, so that the one or more processors implement any one of the above-mentioned activation paging methods;

One or more I/O interfaces 403 are connected between the processor and the memory, and are configured to realize information exchange between the processor and the memory.

The processor 401 is a device with data processing capability, including but not limited to a central processing unit (CPU), etc.; the memory 402 is a device with data storage capability, including but not limited to random access memory (RAM, more specifically Such as SDRAM, DDR, etc.), read only memory (ROM), electrified erasable programmable read only memory (EEPROM), flash memory (FLASH); I/O interface (read and write interface) 403 is connected between the processor 401 and the memory 402 , can realize the information interaction between the processor 401 and the memory 402, which includes but is not limited to a data bus (Bus) and the like.

In some embodiments, the processor 401, the memory 402, and the I/O interface 403 are interconnected by a bus, which in turn is connected to other components of the computing device.

This embodiment also provides a computer-readable medium on which a computer program is stored. When the program is executed by a processor, the activation paging method provided by this embodiment is implemented. To avoid repeated descriptions, the activation paging method is not repeated here. specific steps.

According to embodiments of the present invention, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing the methods illustrated in the flowcharts. In such embodiments, the computer program may be downloaded and installed from a network, and/or installed from a removable storage medium.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions that, when executed on a computer, cause the computer to perform the methods described in the various embodiments above. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present invention result in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center over a wire (e.g. coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center. A computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. Useful media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state drives), and the like.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, without departing from the spirit and essence of the present invention, various modifications and improvements can be made, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. An active paging method, comprising:

responding to signaling reduction mechanism ISR activation information of a mobile terminal in an idle state sent by a mobility management entity MME, and judging whether the mobile terminal activates ISR in the network;

starting a timer under the condition that the mobile terminal is judged to be in the state that the network activates ISR, wherein the time length of the timer is the same as the time length of periodic position updating;

and before the timer is overtime, if the mobile terminal has an incoming call, preferentially paging in the location area range indicated by the location area identifier of the mobile terminal.

2. The method of claim 1, wherein before the timer expires, the method further comprises:

and if the mobile terminal does not respond, directly sending a paging request to the MME.

3. The method of claim 1, wherein before the timer expires, the method further comprises:

if the position updating request of the MME is received, closing a timer; and,

and directly sending a paging request to the MME under the condition that the mobile terminal has an incoming call.

4. The method of claim 1, wherein before the timer expires, the method further comprises:

deleting the SGs interface to enable the mobile terminal to activate ISR under the condition that the TAU timer is determined to be overtime and the location updating request of the mobile terminal is received;

and if the mobile terminal has an incoming call, directly paging the mobile terminal in the 2G/3G network.

5. The method of claim 4, wherein after the timer expires, the method further comprises:

and if the mobile terminal has an incoming call, directly sending a paging request to the MME and informing the MME that the paging request does not need to be sent to the SGSN.

6. A storage controller, MSC, comprising:

a judging module, configured to respond to signaling reduction mechanism ISR activation information in an idle state of a mobile terminal sent by a mobility management entity MME, and judge whether the mobile terminal activates ISR in a network;

the timing module is used for starting a timer under the condition that the mobile terminal is judged to be in the state that the network activates the ISR, wherein the time length of the timer is the same as the time length of the periodic position updating;

and the paging module is used for preferentially paging in the location area range indicated by the location area identifier of the mobile terminal before the timer is overtime and if the mobile terminal has an incoming call.

7. The MSC of claim 6,

the paging module is further configured to directly send a paging request to an MME if the mobile terminal does not respond before the timer expires.

8. The MSC of claim 6,

the timing module is further configured to close the timer if a location update request of the MME is received before the timer expires;

the paging module is further configured to directly send a paging request to an MME when the mobile terminal has an incoming call.

9. The MSC of claim 6,

a deleting module, configured to delete the SGs interface to enable the mobile terminal to activate ISR when the timer is determined to be overtime and a location update request of the mobile terminal is received before the timer is overtime;

the paging module is further configured to directly page the mobile terminal in the 2G/3G network if the mobile terminal has an incoming call.

10. The MSC of claim 6,

the paging module is further configured to, after the timer expires, directly send a paging request to the MME if the mobile terminal has an incoming call, and notify the MME that the MME does not need to send the paging request to the SGSN.

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