CN111935822A - Pre-paging method, device and system - Google Patents

Abstract

The present invention provides a pre-paging method, device and system, which belong to the technical field of communication and can solve the problem of long pre-paging process in the prior art. A pre-paging method of the present invention includes: the calling MSC sends an SRI request to the called HLR; the called HLR sends a roaming number request to the called MSC according to the SRI request; the called MSC sends a roaming number request to the called mobile terminal Send a paging request; at the same time, the called MSC requests the roaming number to be returned to the called HLR according to the roaming number; the called HLR returns the roaming number to the calling MSSC after receiving the roaming number; the calling HLR returns the roaming number to the calling MSSC; After the called MSC receives the roaming number, it sends a call establishment request to the called MSC; the called MSC receives the call establishment request sent by the calling MSC, and the paging response information sent by the called mobile terminal, and send call progress information to the calling MSC according to the reception of the paging response information.

Description

Pre-paging method, device and system

technical field

The invention belongs to the technical field of communications, and in particular relates to a pre-paging method, device and system.

Background technique

At present, in the CSFB call implementation process, there is a method of pre-paging. The process of the method is that when the mobile terminal has an incoming call, the calling MSC sends a request for obtaining the routing information SRI to the HLR to which the mobile terminal belongs, and then the HLR sends a request to obtain the routing information SRI according to the call. The SRI message sends a request for obtaining the roaming number to the MSC to which the mobile terminal belongs. After the MSC to which the mobile terminal belongs receives the paging response information, it will return the roaming number to the HLR to which the mobile terminal belongs, and the HLR to which the mobile terminal belongs to the calling MSC The roaming number is returned for the calling MSC to initiate a call establishment request to the MSC to which the mobile terminal belongs, thereby establishing a call.

The inventor found that although the pre-paging process can speed up and shorten the call setup time to a certain extent, the entire call process is still long, and the user is not well aware.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art, and provides a pre-paging method capable of shortening the duration of the call flow.

The technical solution adopted to solve the technical problem of the present invention is a pre-paging method, including:

The calling MSC sends an SRI request to the called HLR;

The called HLR sends a roaming number request to the called MSC according to the SRI request;

The called MSC sends a paging request to the called mobile terminal; at the same time, the called MSC requests the returned roaming number to the called HLR according to the roaming number;

After receiving the roaming number, the called HLR returns the roaming number to the calling MSSC;

After the calling MSC receives the roaming number, it sends a call establishment request to the called MSC;

The called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends call progress information to the calling MSC according to the reception of the paging response information .

Optionally, after sending the paging request to the called mobile terminal, the step of returning the called mobile terminal to a cell is further included, and after the called mobile terminal falls back to a cell, the called mobile terminal sends paging response information to the called MSC.

Optionally, the step of the called mobile terminal falling back to the cell includes:

The called mobile terminal receives the paging request sent by the MME, and sends an extended service request to the MME;

The MME instructs the eNB to send the fallback cell configuration information to the called mobile terminal;

The called mobile terminal receives the fallback cell configuration information, measures the configured fallback cell, and sends the measurement result to the eNB;

The eNB determines the fallback cell according to the measurement result, and sends the fallback cell information to the called mobile terminal;

The called mobile terminal falls back to the corresponding fallback cell according to the fallback cell information.

Further optionally, after the eNB determines the fallback cell according to the measurement result, it further includes:

The eNB sends the fallback cell information to the called MSC;

According to the received fallback cell information, the called MSC instructs the corresponding base station to do a good job of establishing the wireless signaling bearer in advance.

Optionally, the called mobile terminal includes a 4G multi-mode card.

Further optionally, before sending the paging request to the called mobile terminal, the method further includes: the called mobile terminal performs joint attachment.

Further optionally, the step of the called mobile terminal performing joint attachment includes:

The called mobile terminal sends an attach request message to the MME;

The MME sends the SGs location update request message to the corresponding VLR; the SGs location update request message includes the LAI, IMSI, MME information and location update type of the called mobile terminal;

The VLR stores the MME information and creates an association with the SGs of the called mobile terminal under the MME;

According to the LAI and the IMSI of the called mobile terminal, the VLR initiates the process of updating the location of the called mobile terminal to the HLR, and returns confirmation information to the MME after the update is completed;

The MME sends an attach complete message to the called mobile terminal to complete the joint attachment of the called mobile terminal.

The technical solution adopted to solve the technical problem of the present invention is a pre-paging device, including:

The calling MSC is used to send an SRI request to the called HLR; it is also used to send a call setup request to the called MSC after receiving the roaming number;

The called HLR is used to receive the SRI request sent by the calling MSC, and send a roaming number request to the called MSC according to the SRI request;

The called MSC is used to send a paging request to the called mobile terminal, and at the same time request the roaming number to be returned to the called HLR according to the roaming number; the called MSC is also used to receive the roaming number sent by the calling MSC. The call establishment request and the paging response information sent by the called mobile terminal, and the call progress information is sent to the calling MSC according to the reception of the paging response information.

Optionally, the pre-paging apparatus further includes:

The MME is used to send a paging request to the called mobile terminal; it is also used to receive an extended service request sent by the called mobile terminal;

The eNB is used to send the fallback cell configuration information to the called mobile terminal under the instruction of the MME; it is also used to receive the measurement result sent by the called mobile terminal; determine the fallback cell according to the measurement result, and move to the called mobile terminal The terminal sends fallback cell information, so that the called mobile terminal can fallback to a corresponding fallback cell according to the fallback cell information.

The technical solution adopted to solve the technical problem of the present invention is a pre-paging system, including any one of the above-mentioned pre-paging devices.

Description of drawings

FIG. 1 is a flowchart of a pre-paging method according to an embodiment of the present invention;

FIG. 2 is a block diagram of a pre-paging apparatus according to an embodiment of the present invention.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1:

This embodiment provides a pre-paging method, including:

S11. The calling MSC sends an SRI request to the called HLR.

S12. The called HLR sends a roaming number request to the called MSC according to the SRI request.

S13. The called MSC sends a paging request to the called mobile terminal. At the same time, the called MSC returns the roaming number to the called HLR according to the roaming number request.

S14. After receiving the roaming number, the called HLR returns the roaming number to the calling MSSC.

S15. After receiving the roaming number, the calling MSC sends a call establishment request to the called MSC.

S16: The called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends call progress information to the calling MSC according to the reception of the paging response information.

In the pre-paging method provided in this embodiment, when the called MSC sends a paging request to the called mobile terminal, it also returns the roaming number to the called HLR according to the roaming number request. Compared with the prior art, this implementation In an example, the called MSC sends a paging request to the called mobile terminal and the called MSC returns the roaming number to the called HLR at the same time, thereby shortening the calling process and improving user perception.

Example 2:

As shown in FIG. 1 , this embodiment provides a pre-paging method. Optionally, in this embodiment, the called mobile terminal includes a 4G multi-mode card. Optionally, before participating in pre-paging, or after the (called) mobile terminal is powered on, it includes:

S20. The called mobile terminal performs joint attachment.

That is, this step is to perform joint attachment of the 4G multi-mode card. The joint attachment of the 4G multi-mode card means that the 4G multi-mode card is attached to the 3G network and communicates using the 3G network. After the 4G multi-mode card joint attachment is completed, the call connection of the mobile terminal during the call can be realized.

Further optionally, in step S20, the step of the called mobile terminal performing joint attachment specifically includes:

The called mobile terminal sends an attach request message to the MME.

The MME sends the SGs location update request message to the corresponding VLR. The SGs location update request message includes the LAI of the called mobile terminal, the IMSI of the 4G multimode card, the MME information and the location update type (Location Update Type).

The VLR stores the MME information and creates associations with the SGs of the called mobile terminal under the MME.

The VLR initiates the process of updating the location of the called mobile terminal to the HLR according to the LAI and the IMSI of the called mobile terminal, and returns confirmation information to the MME after the update is completed.

The MME sends an attach complete message to the called mobile terminal to complete the joint attachment of the called mobile terminal.

The pre-paging method provided by this embodiment includes:

S21. The calling MSC sends an SRI request to the called HLR.

Wherein, the SRI request includes the pre-paging flag and the called number. The calling MSC refers to the MSC to which the calling mobile terminal belongs. The called MSC refers to the MSC to which the called mobile terminal belongs.

S22. The called HLR sends a roaming number request to the called MSC according to the SRI request.

The roaming number request includes called number information.

S23. The called MSC sends a paging request to the called mobile terminal. At the same time, the called MSC returns the roaming number to the called HLR according to the roaming number request.

It can be understood that in this embodiment, after sending the paging request to the called mobile terminal, the step of returning the called mobile terminal to the cell is also included, and after the called mobile terminal falls back to the cell, the called mobile terminal sends paging response information to the called MSC.

Optionally, the step of the called mobile terminal falling back to the cell includes:

S241. The called mobile terminal receives the paging request sent by the MME, and sends an extended service request to the MME.

S242. The MME instructs the eNB to send the fallback cell configuration information to the called mobile terminal.

The fallback cell configuration information includes multiple configured fallback cells.

S243. The called mobile terminal receives the fallback cell configuration information, measures the configured fallback cell, and sends the measurement result to the eNB.

S244. The eNB determines the fallback cell according to the measurement result, and sends the fallback cell information to the called mobile terminal.

Specifically, the eNB processes the measurement results to obtain the best fallback cell. The best fallback cell is the fallback cell that allows access and has the best signal.

In this step, the best fallback cell that allows access and has the best signal is selected from a large number of configured fallback cells, and the mobile terminal falls back to the best fallback cell, which can avoid refusing to move because the fallback cell is in a congested state or other poor communication conditions The situation of terminal access occurs, so as to ensure that the mobile terminal can fall back successfully, establish a call smoothly, and improve the user experience.

Further optionally, after the eNB determines the fallback cell according to the measurement result, it further includes:

S2441. The eNB sends the fallback cell information to the called MSC.

S2442: The called MSC instructs the corresponding base station to do the work of establishing the wireless signaling bearer in advance according to the received fallback cell information.

Wherein, after the base station establishes the wireless signaling bearer, it will send information to the called MSC, the called MSC sends the information to the MME, the MME sends the information to the eNB, and the eNB sends the wireless signaling bearer information and the fallback cell information to the mobile terminal.

S245. The called mobile terminal falls back to the corresponding fallback cell according to the fallback cell information.

After step S275, the method further includes: judging whether the fallback cell is consistent with the cell identifier during the joint attachment, and if the fallback cell is inconsistent with the cell identifier during the joint attachment, the mobile terminal first performs location update, and then performs step S246 after completing the location update. If the cell that has fallen back is consistent with the cell identifier at the time of joint attachment, proceed to step S246.

S246. The called mobile terminal sends paging response information to the called MSC.

S25. After receiving the roaming number, the called HLR returns the roaming number to the calling MSSC.

S25. After receiving the roaming number, the calling MSC sends a call establishment request to the called MSC.

S27: The called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends call progress information to the calling MSC according to the reception of the paging response information.

The paging response information sent by the called mobile terminal in step S27 is the paging corresponding information sent by the called mobile terminal in step S246.

Wherein, the reception situation of the paging corresponding information may include: whether the paging response information is received. If the paging response information sent by the called mobile terminal has not been received before, the called MSC sends a call establishment in progress response message to the calling MSC until the paging response information sent by the called mobile terminal is received, and the called MSC sends a call to the calling MSC. The calling MSC sends a call establishment response message, and the call is established.

Example 3:

As shown in FIG. 2, this embodiment provides a pre-paging device, including: a calling MSC, a called HLR, a called MSC,

The calling MSC is used to send an SRI request to the called HLR. It is also used to send a call establishment request to the called MSC after receiving the roaming number.

The called HLR is used to receive the SRI request sent by the calling MSC, and send a roaming number request to the called MSC according to the SRI request.

The called MSC is used to send a paging request to the called mobile terminal, and at the same time return the roaming number to the called HLR according to the roaming number request. The called MSC is also used to receive the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and send call progress information to the calling MSC according to the reception of the paging response information.

Optionally, the pre-paging apparatus provided in this embodiment further includes: an MME and an eNB. in,

The MME is used to send a paging request to the called mobile terminal. It is also used to receive the extended service request sent by the called mobile terminal.

The eNB is used to send the fallback cell configuration information to the called mobile terminal under the instruction of the MME. It is also used to receive the measurement result sent by the called mobile terminal. The fallback cell is determined according to the measurement result, and the fallback cell information is sent to the called mobile terminal, so that the called mobile terminal can fallback to the corresponding fallback cell according to the fallback cell information.

Optionally, the pre-paging apparatus provided in this embodiment further includes: a joint attachment module, configured to perform joint attachment of the 4G multi-mode card to the called mobile terminal.

In the pre-paging device provided in this embodiment, when the called MSC sends a paging request to the called mobile terminal, it also returns the roaming number to the called HLR according to the roaming number request. Compared with the prior art, this implementation In an example, the called MSC sends a paging request to the called mobile terminal and the called MSC returns the roaming number to the called HLR at the same time, thereby shortening the calling process and improving user perception.

Example 3:

This embodiment provides a pre-paging system, including any pre-paging apparatus provided in Embodiment 2.

Since the pre-paging system provided in this embodiment includes the pre-paging device provided in Embodiment 2, when the called MSC sends a paging request to the called mobile terminal, it also returns a roaming number to the called HLR according to the roaming number request. Compared with the prior art, in this embodiment, the called MSC sends a paging request to the called mobile terminal and the called MSC returns the roaming number to the called HLR at the same time, thereby shortening the calling process and improving user perception.

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. a pre-paging method, characterized in that, comprising: The calling MSC sends an SRI request to the called HLR; The called HLR sends a roaming number request to the called MSC according to the SRI request; The called MSC sends a paging request to the called mobile terminal; at the same time, the called MSC requests the returned roaming number to the called HLR according to the roaming number; After receiving the roaming number, the called HLR returns the roaming number to the calling MSSC; After the calling MSC receives the roaming number, it sends a call establishment request to the called MSC; The called MSC receives the call establishment request sent by the calling MSC and the paging response information sent by the called mobile terminal, and sends call progress information to the calling MSC according to the reception of the paging response information . 2 . The pre-paging method according to claim 1 , wherein after sending a paging request to the called mobile terminal, the method further comprises a step of returning the called mobile terminal to a cell, and the called mobile terminal falls back to a cell after the called mobile terminal falls back to the cell. 3 . , and send paging response information to the called MSC. 3. The pre-paging method according to claim 2, wherein the step of the called mobile terminal falling back to a cell comprises: The called mobile terminal receives the paging request sent by the MME, and sends an extended service request to the MME; The MME instructs the eNB to send the fallback cell configuration information to the called mobile terminal; The called mobile terminal receives the fallback cell configuration information, measures the configured fallback cell, and sends the measurement result to the eNB; The eNB determines the fallback cell according to the measurement result, and sends the fallback cell information to the called mobile terminal; The called mobile terminal falls back to the corresponding fallback cell according to the fallback cell information. 4. The pre-paging method according to claim 3, wherein after the eNB determines the fallback cell according to the measurement result, the method further comprises: The eNB sends the fallback cell information to the called MSC; According to the received fallback cell information, the called MSC instructs the corresponding base station to do a good job of establishing the wireless signaling bearer in advance. 5. The pre-paging method according to claim 1, wherein the called mobile terminal comprises a 4G multi-mode card. 6 . The pre-paging method according to claim 5 , wherein before sending a paging request to the called mobile terminal, the method further comprises: the called mobile terminal performs joint attachment. 7 . 7. The pre-paging method according to claim 6, wherein the step of the called mobile terminal performing joint attachment comprises: The called mobile terminal sends an attach request message to the MME; The MME sends the SGs location update request message to the corresponding VLR; the SGs location update request message includes the LAI, IMSI, MME information and location update type of the called mobile terminal; The VLR stores the MME information and creates an association with the SGs of the called mobile terminal under the MME; According to the LAI and the IMSI of the called mobile terminal, the VLR initiates the process of updating the location of the called mobile terminal to the HLR, and returns confirmation information to the MME after the update is completed; The MME sends an attach complete message to the called mobile terminal to complete the joint attachment of the called mobile terminal. 8. A pre-paging device, comprising: The calling MSC is used to send an SRI request to the called HLR; it is also used to send a call setup request to the called MSC after receiving the roaming number; The called HLR is used to receive the SRI request sent by the calling MSC, and send a roaming number request to the called MSC according to the SRI request; The called MSC is used to send a paging request to the called mobile terminal, and at the same time request the roaming number to be returned to the called HLR according to the roaming number; the called MSC is also used to receive the roaming number sent by the calling MSC. The call establishment request and the paging response information sent by the called mobile terminal, and the call progress information is sent to the calling MSC according to the reception of the paging response information. 9. The pre-paging device according to claim 7, further comprising: The MME is used to send a paging request to the called mobile terminal; it is also used to receive an extended service request sent by the called mobile terminal; The eNB is used to send the fallback cell configuration information to the called mobile terminal under the instruction of the MME; it is also used to receive the measurement result sent by the called mobile terminal; determine the fallback cell according to the measurement result, and move to the called mobile terminal The terminal sends fallback cell information, so that the called mobile terminal can fallback to a corresponding fallback cell according to the fallback cell information. 10. A pre-paging system, characterized by comprising the pre-paging device according to any one of claims 7-9.

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