WO2011110017A1

WO2011110017A1 - Service processing method and device

Info

Publication number: WO2011110017A1
Application number: PCT/CN2010/077069
Authority: WO
Inventors: 于益俊; 陆峰; 袁立平
Original assignee: 华为技术有限公司
Priority date: 2010-09-17
Filing date: 2010-09-17
Publication date: 2011-09-15
Also published as: CN102342134A

Abstract

A service processing method and device are provided. The service processing method includes: a home location register/home subscriber server (HLR/HSS) is informed that a circuit-switched fallback (CSFB) type is Gs CSFB; the HLR/HSS receives a service routing message sent by a gateway device; the HLR/HSS sends a service routing acknowledgement message to the gateway device and the service routing acknowledgement message includes service routing information. The HLR/HSS is informed that the CSFB type is Gs CSFB and sends the service routing acknowledgement message including the service routing information to the gateway device after receiving the service routing message sent by the gateway device and then the gateway device sends a corresponding message to a network element device corresponding to the service routing message in order to accomplish a downlink short message (SMS) process or a downlink voice process. In this method the service is completed without upgrading all the mobile switching centers/visitor location registers (MSC/VLR) in an existing network, therefore the original MSC/VLR can be used to implement the CSFB service and a few upgraded interworking functions (IWF) can be used for SMS process in order to decrease operational costs.

Description

Business processing method and device

The present invention relates to the field of communications technologies, and in particular, to a service processing method and apparatus. Background technique

The Evolved Universal Mobile Telecommunication System Territorial Radio Access Network (E-UTRAN) and the Evolved Packet Core (EPC) are formed by the Evolved Universal Mobile Telecommunication System (UMTS). Evolved Packet System (EPS). Since many services of the operators are running in the Circuit Switching (CS) domain of the 2G/3G radio access network, in order to reuse the existing CS domain services in the EPS network, it is proposed to connect to the CS through the EPS network. The method of the core network of the domain enables the user equipment (User Equipment, UE for short) to return to the 2G/3G network through the E-UTRAN to complete the CS domain service. The network architecture and processing method can be called "circuit fallback" (CS Fallback, Referred to as CSFB). Under the above network architecture, the Mobility Management Entity (MME) in the EPS network is connected to the Mobile Switching Centre (MSC)/Visit Location Register of the traditional CS domain core network through an SGs interface. (Visitor Location Register, referred to as VLR).

In the process of implementing the present invention, the inventor has found that at least the following problems exist in the prior art: The SGs interface is a new interface. If the CSFB service is to be implemented, all MSC/VLRs of the existing network need to be upgraded, and even if the carrier is The network does not use the above CSFB service, but in order to support CSFB roaming, it also has to upgrade all MSC/VLR to meet the needs of roaming users. In summary, using the CSFB method described above, operators need to upgrade all of their MSC/VLRs, which greatly increases operating costs. Summary of the invention

The embodiment of the invention provides a service processing method and device, which are used to solve the problem that the existing CSFB network architecture needs to upgrade all MSC/VLRs, realize the CSFB service by using the original MSC/VLR, and utilize the upgrade interworking function network element. (Interworking Function, IWF for short) Conduct SMS to reduce operating costs.

The embodiment of the invention provides a service processing method, including:

The HLR/HSS receives the service routing message sent by the gateway device;

If the CSFB type is Gs CSFB, the HLR/HSS sends a service route response message to the gateway device, where the service route response message includes service routing information.

The embodiment of the invention further provides a service processing device, including:

a receiving module, configured to receive a service routing message sent by the gateway device;

And a sending module, configured to send a service routing response message to the gateway device if the CSFB type is Gs CSFB, where the service routing response message includes service routing information.

According to the foregoing technical solution, the HLR/HSS in the embodiment of the present invention knows that the CSFB type is Gs CSFB, and after receiving the service routing message sent by the gateway device, sends a service routing response message including the service routing information to the gateway device, And the gateway device sends the corresponding message to the network element device corresponding to the service routing information, so that the downlink short message process or the downlink voice process is completed, so that the service can be completed without upgrading all the MSCs/VLRs in the existing network, so that the gateway device can be used. The original MSC/VLR implements the CSFB service and uses a small number of IWFs to upgrade the SMS, reducing operating costs. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work. 1 is a schematic flowchart of a service processing method according to Embodiment 1 of the present invention; FIG. 2 is a schematic flowchart of a service processing method according to Embodiment 2 of the present invention;

3 is a schematic flowchart of a service processing method according to Embodiment 3 of the present invention;

4 is a schematic flowchart of a service processing method according to Embodiment 4 of the present invention;

FIG. 5 is a schematic flowchart of a service processing method according to Embodiment 5 of the present invention;

FIG. 6 is a schematic structural diagram of a service processing apparatus according to Embodiment 6 of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic flowchart of a service processing method according to Embodiment 1 of the present invention. As shown in FIG. 1 , the service processing method in this embodiment may include the following steps:

Step 101: A home location register (HLR)/Home Subscriber Server (HSS) receives a service routing message sent by the gateway device.

If the gateway device is a Short Message Service Gatway Mobile Switching Center (SMS-GMSC), the bus ¹ J HLR/HSS receives the service routing message sent by the SMS-GMSC; The Mobile Switching Center (GMSC), the HLR/HSS receives the service routing message sent by the GMSC.

Specifically, the service routing message sent by the foregoing SMS-GMSC may be a short message sending routing information (Send Routing Info For Short Message, or MAP SEND ROUTING INFO FOR SM) message, and the service routing message sent by the GMSC may be sending routing information ( Send Routing Info, or MAP SEND ROUTING) message. Step 102: If the CS Fallback (CSFB) type is Gs CSFB, the HLR/HSS sends a service routing response message to the gateway device, where the service routing response message includes service routing information.

Specifically, the foregoing CSFB type may include a short message (SMS Over SGs only, SMS-only) through the SGs interface, or a short message through the SGs interface and CSFB through the Gs interface (Gs CSFB and SMS over SGs, Gs CSFB for short) ). The embodiment of the present invention does not limit the name of the type of the CSFB, for example: The above Gs CSFB may also be referred to as Gs CSFB and SMS over SGs.

The above HLR/HSS knows that the CSFB type is Gs CSFB, including but not limited to the following: HLR/HSS acquires the CSFB type identifier. The above HLR/HSS knows that the CSFB type is Gs CSFB according to the above CSFB type identifier. In the embodiment of the present invention, the CSFB type identifier may include Gs CSFB (ie, the corresponding CSFB type is Gs CSFB), or may include SMS-only (ie, the corresponding CSFB type is SMS-only). The embodiment of the present invention does not limit the name of the above CSFB type identifier.

The foregoing HLR/HSS may obtain the CSFB type identifier before performing the service processing, specifically, in the joint attach or joint tracking area update process before the service processing: the HLR/HSS receives the request message sent by the IWF (for example, the location update request) The message request includes the CSFB type identifier or the SMS-only indication is not included in the request message. In this embodiment, the IWF refers to an IWF that performs Short Message Service (SMS) through the SGs interface, so that SMS can be directly implemented in the EPS network.

Before the HLR/HSS receives the request message sent by the IWF, the method further includes: the IWF knows that the CSFB type is Gs CSFB, and the method includes: before the HLR/HSS receives the request message sent by the IWF, the IWF receives the request message sent by the MME (for example: a location update request message, where the request message includes a CSFB type identifier or the request message includes MSC/VLR information or the request message does not include an SMS-only indication, and the IWF learns that the CSFB type is Gs CSFB according to the request message. In this embodiment, the foregoing MSC/VLR refers to entering through the Gs interface. MSC/VLR of CSFB monthly service.

Before the IWF receives the request message sent by the MME, the MME further includes: the MME knows that the CSFB type is Gs CSFB, and the method includes: determining, by the MME, the attach request/tracking area update request message and the network capability (that is, whether the network supports Gs CSFB) sent by the UE. The above CSFB type is Gs CSFB.

The service routing information may specifically include IWF information or MSC/VLR information. The IWF information may include at least one of an IWF address (IWF Address) and an IWF number, where the IWF number may be a VLR number corresponding to the IWF; the MSC/VLR information may include an MSC Address (MSC Address) and At least one of the VLR numbers.

In the scenario where the IWF information and the MSC/VLR information can be stored in the HLR/HSS at the same time, if the CSFB type is Gs CSFB (the IWF information and the MSC/VLR information are stored in the HLR/HSS), the above-mentioned gateway device In the case of the SMS-GMSC, the HLR/HSS sends a service routing response message to the SMS-GMSC, and the service routing response message includes the IWF information; or when the gateway device is a GMSC, the HLR/HSS sends a service route to the GMSC. In response to the message, the service routing response message includes MSC/VLR information.

In addition, after the SMS-GMSC receives the service routing response message that includes the IWF information, the method further includes: the IWF receiving the SMS message sent by the SMS-GMSC, where the IWF sends a paging request message to the MME, where the paging request message includes an SMS indication. The IWF receives the service request message sent by the MME, and the IWF sends an SMS message to the MME to enable the MME to send an SMS message to the UE. After receiving the service routing response message including the MSC/VLR information, the GMSC may further include: MSC/VLR Receiving an initial address message (IAM) sent by the GMSC, the MSC/VLR sends a paging request message to the MME, so that the MME pages the UE, so that the UE performs the CSFB procedure to fall back to the 2G/3G network.

In the scenario where only the IWF information or the MSC/VLR information can be stored in the HLR/HSS, if the CSFB type is known as Gs CSFB (in this case, the IWF information is stored in the HLR/HSS, in the IWF) Storing MSC/VLR information), when the gateway device is a GMSC, the HLR/HSS sends a service route response message to the GMSC, where the service route response message includes IWF information, or the HLR/HSS sends a service route response to the GMSC. The message, the service routing response message includes the MSC/VLR information. Before the HLR/HSS sends the service routing response message including the MSC/VLR information to the GMSC, the method may further include: the HLR/HSS sends a request message to the IWF; the HLR/HSS receives the response message sent by the IWF, where the response message is sent. Contains MSC/VLR information.

In addition, after the GMSC receives the service routing response message that includes the IWF information, the GMSC may further include: the GMSC sends a service routing message to the IWF, and the GMSC receives the service routing response message sent by the IWF, where the service routing response message includes the MSC/VLR information. The GMSC sends an IAM to the MSC/VLR, so that the MSC/VLR sends a paging request message to the MME, so that the MME pages the UE, and the UE performs the CSFB procedure to fall back to the 2G/3G network; and the GMSC receives the MSC/VLR. After the service routing response message of the information, the method further includes: the MSC/VLR receiving the IAM sent by the GMSC, and the MSC/VLR sending a paging request message to the MME, so that the MME pages the UE, so that the UE performs the CSFB process to fall back to the 2G/3G. The internet.

Specifically, the service routing response message that is received by the foregoing SMS-GMSC may be a message of a short message sending routing information ( ssssssssssssssssssssssssssssssssssss Send a Routing Information Ack ( or MAP SEND ROUTING ACK) message.

The IWF and the HLR/HSS can obtain the corresponding service routing information according to the joint attach or joint tracking area update process described in the foregoing step 101. For example: the HLR/HSS may learn the IWF information according to the request message sent by the IWF to the HLR/HSS; or the HLR/HSS may learn the MSC/VLR information according to the request message sent by the MSC/VLR to the HLR/HSS; or the IWF may refer to the IWF according to the MME. The send request message learns the MSC/VLR information.

In this embodiment, after the HLR/HSS receives the service routing message sent by the gateway device, The CSFB type is Gs CSFB, and the HLR/HSS sends a service routing response message including the service routing information to the gateway device, so that the gateway device sends a corresponding message to the network element device corresponding to the service routing information, so that the downlink short message is completed. The process or the downlink voice process enables the service to be completed without upgrading all the MSCs/VLRs in the existing network, so that the CSFB service can be implemented by using the original MSC/VLR, and the SMS is upgraded by using a small number of IWFs, thereby reducing the operation cost.

FIG. 2 is a schematic flowchart of a service processing method according to Embodiment 2 of the present invention. This embodiment is a specific embodiment of the first embodiment of the present invention, and the embodiment is applicable to a downlink short message process. As shown in FIG. 2, the service processing method in this embodiment may include the following steps:

Step 201: The SMS-GMSC receives the SMS message sent by the service center (Service Center, SC for short).

Step 202: The SMS-GMSC sends a service routing message to the HLR/HSS.

The service routing message may be a short message routing information (Send Routing Info For Short Message, or MAP SEND ROUTING INFO FOR SM) message.

Step 203: The HLR/HSS sends a service route response message to the SMS-GMSC.

Wherein, for the UE that performs the joint attach/joint tracking area update process before the embodiment,

The HWF/HSS can store IWF information and MSC/VLR information (in this case, the CSFB type is Gs CSFB), or the HLR/HSS can store only IWF information (in this case, the CSFB type is SMS-only); otherwise, HLR/HSS Only MSC/VLR information can be stored (the CSFB type is not known at this time). Then, the foregoing SMS-GMSC sends a service route response message to the HLR/HSS, and the specific implementation may include but is not limited to the following methods:

1) If HLR/HSS knows that the CSFB type is Gs CSFB:

The service routing response message returned by the HLR/HSS to the SMS-GSMC includes the above IWF information (where the IWF information is stored by the HLR/HSS). For a specific implementation of the HLR/HSS, the CSFB type is Gs CSFB. For details, refer to the first embodiment of the present invention, which is not described herein again.

2) If the HLR/HSS knows that the CSFB type is SMS-only: The service routing response message returned by the HLR/HSS to the SMS-GSMC includes the above IWF information (where the IWF information is stored by the HLR/HSS).

3) If HLR/HSS is not known CSFB type:

The service routing response message returned by the HLR/HSS to the SMS-GSMC includes the above MSC/VLR information (where the above MSC/VLR information is stored by the HLR/HSS).

If the service routing response message returned by the HLR/HSS to the SMS-GSMC includes the IWF information, the SMS-GMSC sends a short message to the IWF (ie, step 204 is performed); if the HLR/HSS returns the service route to the SMS-GSMC. The response message includes the MSC/VLR information, and the SMS-GMSC sends a short message to the MSC/VLR, and the triggered SMS message is finally sent to the UE.

The service routing response message may be a message of a short message sending routing information (Send Routing Info Ack For Short Message, or MAP SEND ROUTING ACK INFO FOR SM).

Step 204: The SMS-GMSC sends an SMS message to the IWF.

Step 205: The IWF sends a paging request message to the MME, where the paging request message includes an SMS indication (SMS lndication).

If the UE is in an idle state, step 206-step 210 is performed after the step; if the UE is in the connected state, step 211 is directly executed after the step (ie, step 206-step 210 is not performed).

Step 206: The MME sends a paging (Paging) message to the eNodeB.

Step 207: The eNodeB sends a paging (Paging) message to the UE.

Step 208: U E establishes an RRC connection, and sends a service request (Service) to the MM E through the eNodeB.

Request ) Message.

Step 209: The MME sends an Initial UE Context Setup message to the eNodeB.

Step 210: The eNodeB sends an initial UE context setup response (Initial UE Context Setup Response) message to the MME.

Step 211: The MME sends a Service Request message to the IWF for the IWF. Stop retransmitting the paging request message.

Step 212: The IWF includes the SMS message in a Downlink Unitdata message, and sends the downlink unit data message to the MME.

Step 213: The MME includes the SMS message in a Downlink NAS Transport message, and sends the downlink N AS transmission message to the UE.

Step 214: Perform a subsequent process of the downlink short message (MT SMS), including the UE sending a delivery report to the SC, and confirming that the SMS message is received, and details are not described herein.

In this embodiment, the HLR/HSS learns that the CSFB type is Gs CSFB, and after receiving the service routing message sent by the SMS-GMSC, sends the service routing response information including the IWF information to the SMS-GMSC, so that the SMS-GMSC sends the information to the IWF. The SMS message, so that the IWF sends an SMS message to the MME, and the MME sends an SMS message to the UE to ensure that the downlink short message process is normal, so that the upgrade of a small number of IWFs (IWFs supporting the SGs interface) can be used to ensure that the SMS service is directly completed in the EPS network. The user's SMS experience reduces operating costs.

FIG. 3 is a schematic flowchart of a service processing method according to Embodiment 3 of the present invention. This embodiment is another specific embodiment of Embodiment 1 of the present invention. This embodiment is applicable to a downlink voice process. As shown in FIG. 3, the service processing method in this embodiment may include the following steps:

Step 301: The GMSC receives an Initial Address Message (abbreviated as ΙΑΜ).

Step 302: The GMSC sends a service routing message to the HLR/HSS.

The service routing message may be a message of Send Routing Info (SRI, or MAP SEND ROUTING INFO).

Step 303: The HLR/HSS sends a service route response message to the GMSC.

Wherein, for the UE that performs the joint attach/joint tracking area update procedure before the embodiment, the IWF information and the MSC/VLR information may be stored in the HLR/HSS (the CSFB type is Gs CSFB at this time); or in the HLR/HSS It is possible to store only IWF information (in this case, the CSFB type is SMS-only); in addition, only the MSC/VLR information can be stored in the HLR/HSS (not known at this time). CSFB type). The GMSC sends a service route response message to the HLR/HSS. The specific implementation may include, but is not limited to, the following methods:

1) If HLR/HSS knows that the CSFB type is Gs CSFB:

The service routing response message returned by the HLR/HSS to the GSMC includes the above MSC/VLR information (where the MSC/VLR information is stored by the HLR/HSS). For a specific implementation of the HLR/HSS to learn that the CSFB type is Gs CSFB, refer to the first embodiment of the present invention, which is not described herein again.

2) If the HLR/HSS is aware that the CSFB type is SMS-only:

The service routing response message returned by the HLR/HSS to the GSMC includes the above IWF information (where the IWF information is stored by the HLR/HSS), or the service routing response message returned by the HLR/HSS to the GSMC includes a voice call service restriction indication. Indicates that the voice call service is restricted. For example: Set the User error message in the above route information response message to Call Barred.

3) If HLR/HSS is not known CSFB type:

The service routing response message returned by the HLR/HSS to the GSMC includes the above MSC/VLR information (where the MSC/VLR information is stored by the HLR/HSS).

If the service routing response message returned by the HLR/HSS to the GSMC includes the MSC/VLR information, the GMSC sends an IAM to the MSC/VLR (ie, step 304 is performed); if the HLR/HSS returns a service routing response message to the GSMC. Including the IWF information, the GMSC sends the above IAM to the IWF, triggers the IWF to page the UE through the MME, and performs the CSFB procedure to drop the UE back to the 2G/3G network; if the HLR/HSS returns a service routing response message to the GSMC, If the tone call service is restricted, the GMSC may discard the above IAM.

The service routing response message may be a Send Routing Info Ack (or MAP SEND ROUTING INFO ACK) message.

Step 304: The GMSC sends an IAM to the MSC/VLR.

Step 305: The MSC/VLR sends a paging request message to the MME, where the paging request message is sent. Contains a voice call indication (CS Call Indicarion).

If the UE is in an idle state, step 306 is performed after the step (step 307 is not performed); if the UE is in the connected state, step 307 is performed after the step (step 306 is not performed).

Step 306: The MME sends a paging (Paging) message to the UE by using the eNodeB.

Step 307: The MME sends a CS Domain Notification (CS Service Notification) message to the UE.

Step 308: The UE sends an Extended Service Request message to the MME through the eNodeB, where the extended service request message includes a CSFB indication.

Step 309: The MME sends an S1-AP request message to the eNodeB, where the S1-AP request message includes a CSFB indication.

Step 310: The eNodeB sends an S1-AP response message to the MME.

Step 311: The eNodeB performs a CSFB process to migrate the UE to the 2G/3G network. Specifically, the CSFB process may include performing a PS Handover (PS HO) process or performing network assisted cell reselection ( Network Assisted Cell Change (NACC) or Radio Resource Control Connection Release (f3⁄4 RRC Connection Release).

Step 312: After the UE sends a service request message to the MSC/VLR to establish a CS connection, the UE initiates a voice call process to the MSC/VLR, and completes the subsequent voice call process according to the response of the MSC/VLR. Narration.

In this embodiment, the HLR/HSS learns that the CSFB type is Gs CSFB, and after receiving the service routing message sent by the GMSC, sends a service routing response message including the MSC/VLR information to the GMSC, so that the GMSC sends the IAM to the MSC/VLR. In order to enable the MSC/VLR to send a paging request message to the MME, so that the MME can page the UE, so that the UE performs the CSFB process to fall back to the 2G/3G network, ensuring that the downlink voice flow is normal, so that the original MSC/VLR can be implemented. CSFB service, that is, CSFB can be completed without upgrading all MSC/VLRs in the existing network, which reduces operating costs. FIG. 4 is a schematic flowchart of a service processing method according to Embodiment 4 of the present invention. This embodiment is another embodiment of the foregoing Embodiment 1 of the present invention. This embodiment is applicable to a downlink voice process. As shown in FIG. 4, the service processing method in this embodiment may include the following steps:

Step 401: The GMSC receives an Initial Address Message (abbreviated as ΙΑΜ).

Step 402: The GMSC sends a service routing message to the HLR/HSS.

For the UE that performs the joint attach/joint tracking area update procedure before this embodiment, only the IWF information may be stored in the HLR/HSS (the CSFB type is Gs CSFB or SMS-only); otherwise, the HLR/HSS Only MSC/VLR information can be stored (the CSFB type is not known at this time). At this time, the specific implementation of the HLR/HSS processing may include, but is not limited to, the following methods:

1) If HLR/HSS knows that the CSFB type is Gs CSFB:

The HLR/HSS sends a request message to the IWF (the IWF corresponding to the IWF information) (ie, step 403 is performed). The HLR/HSS instructs the IWF to query the service routing information of the UE by sending a request message to the IWF. For a specific implementation of the HLR/HSS, the CSFB type is Gs CSFB. For details, refer to the first embodiment of the present invention.

2) If the HLR/HSS is aware that the CSFB type is SMS-only:

The service routing response message returned by the HLR/HSS to the GSMC includes the above IWF information (where the IWF information is stored by the HLR/HSS), and the GMSC sends the IAM to the IWF, triggering the IWF to page the UE through the MME to execute the CSFB. The process returns the UE to the 2G/3G network, or the service routing response message returned by the HLR/HSS to the GSMC includes a voice call service restriction indication, indicating that the voice call service is restricted, for example: sending the routing information response message The User error cell is set to Call Barred, and the GMSC discards the above IAM.

3) If HLR/HSS is not known CSFB type:

The service routing response message returned by the HLR/HSS to the GSMC includes the above MSC/VLR letter. The MSC/VLR information is stored in the HLR/HSS, that is, step 405 is directly executed (ie, step 403-step 404 is not performed).

Step 403: The HLR/HSS sends a service routing message to the IWF.

The HLR/HSS instructs the IWF to query the service routing information of the UE by sending a service routing message to the IWF. In this case, the MSC/VLR information is stored in the IWF because the CSFB type is Gs CSFB. For the specific implementation of the IWF to learn the MSC/VLR information, refer to the first embodiment of the present invention, which is not described herein again.

The service routing message may be a routing information (Send Routing Info, or MAP SEND ROUTING INFO) message, or may be a newly created routing information request (Routing Info Request) message, which is not limited in this embodiment.

Step 404: The IWF sends a service route response message to the HLR/HSS.

The IWF sends a service route reply message to the HLR/HSS, and the service route reply message includes MSC/VLR information (where the MSC/VLR information is stored by the IWF).

The service routing response message may be a Send Routing Info Ack (or MAP SEND ROUTING INFO ACK) message, or may be a newly created Routing Info Response message, which is not used in this embodiment. Make restrictions.

Step 405: The HLR/HSS sends a service route response message to the GMSC.

The service routing response message returned by the HLR/HSS to the GSMC includes the foregoing MSC/VLR information. The service routing response message may be a Send Routing Info Ack (or MAP SEND ROUTING INFO ACK) message.

Step 406: The GMSC sends an IAM to the MSC/VLR.

Step 407: The MSC/VLR sends a paging request message to the MME, where the paging request message includes a CS Call Indicarion.

If the UE is in an idle state, step 408 is performed after the step (step 409 is not performed); if the UE is in the connected state, step 409 is performed after the step (step 408 is not performed).

Step 408: The MME sends a paging (Paging) message to the UE by using the eNodeB. Step 409: The MME sends a CS Domain Notification (CS Service Notification) message to the UE.

Step 410: The UE sends an Extended Service Request message to the MME through the eNodeB, where the extended service request message includes a CSFB indication.

Step 411: The MME sends an S1-AP request message to the eNodeB, where the S1-AP request message includes a CSFB indication.

Step 412: The eNodeB sends an S1-AP response message to the MME.

Step 413: The eNodeB performs a CSFB process to migrate the UE to the 2G/3G network. Specifically, the CSFB process may include performing a PS Handover (PS HO) process or performing network assisted cell reselection ( Network Assisted Cell Change (NACC) or Radio Resource Control Connection Release (f3⁄4 RRC Connection Release).

Step 414: After the UE sends a service request message to the MSC/VLR to establish a CS connection, the UE initiates a voice call process to the MSC/VLR, and completes the subsequent voice call process according to the response of the MSC/VLR. Narration.

In this embodiment, the HLR/HSS learns that the CSFB type is Gs CSFB, and after receiving the service routing message sent by the GMSC, sends a service routing message to the IWF and receives a service routing response message including the MSC/VLR information sent by the IWF, and then Sending service routing response information including MSC/VLR information to the GMSC, so that the GMSC sends an IAM to the MSC/VLR, so that the MSC/VLR sends a paging request message to the MME, so that the MME pages the UE, so that the UE performs CSFB. The process falls back to the 2G/3G network to ensure that the downlink voice process is normal, so that the CSFB service can be implemented by using the original MSC/VLR, that is, the CSFB can be completed without upgrading all the MSC/VLRs in the existing network, thereby reducing the operation cost.

FIG. 5 is a schematic flowchart of a service processing method according to Embodiment 5 of the present invention. This embodiment is a further embodiment of the foregoing Embodiment 1 of the present invention. This embodiment is applicable to a downlink voice process. As shown in FIG. 5, the service processing method in this embodiment may include the following steps: Step 501: The GMSC receives an Initial Address Message (abbreviated as ΙΑΜ).

Step 502: The GMSC sends a service routing message to the HLR/HSS.

Step 503: The HLR/HSS sends a service route response message to the GMSC.

For the UE that performs the joint attach/joint tracking area update procedure before this embodiment, only the IWF information may be stored in the HLR/HSS (the CSFB type is Gs CSFB or SMS-only); otherwise, the HLR/HSS Only MSC/VLR information can be stored (the CSFB type is not known at this time). The GMSC sends a service route response message to the HLR/HSS. The specific implementation may include, but is not limited to, the following methods:

1) If HLR/HSS knows that the CSFB type is Gs CSFB:

The service routing response message returned by the HLR/HSS to the GSMC includes IWF information (where the IWF information is stored by the HLR/HSS), and then step 504 is performed. The HLR/HSS sends the service routing response message to the GMSC to instruct the GMSC to query the service routing information of the UE by the IWF. For a specific implementation of the HLR/HSS, the CSFB type is Gs CSFB. For details, refer to the first embodiment of the present invention, which is not described herein again.

2) If the HLR/HSS is aware that the CSFB type is SMS-only:

3) If HLR/HSS is not known CSFB type:

The service routing response message returned by the HLR/HSS to the GSMC includes the above MSC/VLR letter. The MSC/VLR information is stored by the HLR/HSS, and then step 506 is performed (ie, steps 504-505 are not performed).

Step 504: The GMSC sends a service routing message to the IWF.

The GMSC instructs the IWF to query the service routing information of the UE by sending a service routing message to the IWF. In this case, the MSC/VLR information is stored in the IWF because the CSFB type is Gs CSFB. For the specific implementation of the IWF to learn the MSC/VLR information, refer to the first embodiment of the present invention, which is not described herein again.

The service routing message may be a routing information (Send Routing Info, or

The MAP SEND ROUTING INFO message, or may be a newly created Routing Info Request message, which is not limited in this embodiment.

Step 505: The IWF sends a service information response message to the GMSC.

The IWF sends a service information response message to the GMSC, and the service information response message includes MSC/VLR information (where the MSC/VLR information is stored by the IWF).

The service information response message may be a Send Routing Info Ack (or MAP SEND ROUTING INFO ACK) message, or may be a newly created Routing Info Response message, which is not used in this embodiment. Make restrictions.

Step 506: The GMSC sends an IAM to the MSC/VLR.

Step 507: The MSC/VLR sends a paging request message to the MME, where the paging request message includes a CS Call Indicarion.

If the UE is in an idle state, step 508 is performed after the step (step 509 is not performed); if the UE is in the connected state, step 509 is performed after the step (step 508 is not performed).

Step 508: The MME sends a paging (Paging) message to the UE by using the eNodeB.

Step 509: The MME sends a CS Domain Notification (CS Service Notification) message to the UE. Step 510: The UE sends an Extended Service Request message to the MME, where the extended service request message includes a CSFB indication.

Step 511: The MME sends an S1-AP request message to the eNodeB, where the S1-AP request message includes a CSFB indication.

Step 512: The eNodeB sends an S1-AP response message to the MME.

Step 513: The eNodeB performs a CSFB process to migrate the UE to the 2G/3G network. Specifically, the CSFB process may include performing a PS Handover (PS HO) process or performing network assisted cell reselection ( Network Assisted Cell Change (NACC) or the process of performing Radio Resource Control Connection Release (RRC Connection Release).

Step 514: After the UE sends a service request message to the MSC/VLR to establish a CS connection, the UE initiates a voice call process to the MSC/VLR, and completes the subsequent voice call process according to the response of the MSC/VLR. Narration.

In this embodiment, the HLR/HSS learns that the CSFB type is Gs CSFB, and after receiving the service routing message sent by the GMSC, sends a service information response message including the IWF information to the GMSC, so that the GMSC sends the service information message to the IWF and receives the message. The service information response message that is sent by the IWF and includes the MSC/VLR information, so that the GMSC sends an IAM to the MSC/VLR, and triggers the MSC/VLR to page the UE through the MME to perform the CSFB process to drop the UE to the 2G/3G network. The downlink voice process is guaranteed to be normal, so that the CSFB service can be implemented by using the original MSC/VLR, that is, the CSFB can be completed without upgrading all the MSC/VLRs in the existing network, thereby reducing the operation cost.

In the embodiment of the present invention, the 2G/3G network refers to a Global System for Mobile Communications (GSM)/Enhanced Data Rate for GSM Evolution (EDGE). GSM EDGE Radio Access Network (GERAN) / Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (Universal Mobile Telecommunication) The System Territorial Radio Access Network (UTRAN) can also be called GERAN/UTRAN.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

FIG. 6 is a schematic structural diagram of a service processing apparatus according to Embodiment 6 of the present invention. As shown in FIG. 6, the service processing apparatus in this embodiment may include a receiving module 61 and a sending module 62.

The receiving module 61 is configured to receive a service routing message sent by the gateway device.

The sending module 62 is configured to send a service routing response message to the gateway device if the CSFB type is Gs CSFB, where the service routing response message includes service routing information.

The functions of the first embodiment of the present invention, the second embodiment of the present invention, the third embodiment of the present invention, the fourth embodiment of the present invention, and the HLR/HSS in the fifth embodiment of the present invention can be implemented by the service processing apparatus provided in this embodiment.

In this embodiment, after the receiving module receives the service routing message sent by the gateway device, if the CSFB type is Gs CSFB, the sending module sends a service routing response message including the service routing information to the gateway device, so that the gateway device is The network element device corresponding to the service routing information sends a corresponding message, so that the downlink short message process or the downlink voice process is completed, so that the service can be completed without upgrading all the MSCs/VLRs in the existing network, so that the original MSC/VLR can be implemented. The CSFB service, as well as the use of a small number of IWFs for SMS, reduces operating costs.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. Including the steps of the above method embodiments; The storage medium includes: a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A business processing method, comprising:

The HLR/HSS receives the service routing message sent by the gateway device;

2. The method of claim 1 wherein

The service routing message sent by the HLR/HSS receiving the gateway device includes: the HLR/HSS receiving a service routing message sent by the SMS-GMSC;

The HLR/HSS sends a service route response message to the gateway device, where the route response message includes service routing information, including: the HLR/HSS sends a service route response message to the SMS-GMSC, and the service route response The message contains IWF information.

The method according to claim 2, wherein after the HLR/HSS sends the service routing response message to the SMS-GMSC, the method further includes:

The IWF receives the SMS message sent by the SMS-GMSC;

Sending, by the IWF, a paging request message to the MME, where the paging request message includes an SMS indication;

Receiving, by the IWF, a service request message sent by the MME;

Sending, by the IWF, the SMS message to the MME, so that the MME sends the SMS message to the UE.

4. The method of claim 1 wherein:

The service routing message sent by the HLR/HSS receiving the gateway device includes: the HLR/HSS receiving a service routing message sent by the GMSC;

The HLR/HSS sends a service route response message to the gateway device, where the route response message includes service routing information, including: the HLR/HSS sends a service route response message to the GMSC, where the service route response message is sent. Contains MSC/VLR information.

5. The method of claim 1 wherein: The service routing message sent by the HLR/HSS receiving the gateway device includes: the HLR/HSS receiving a service routing message sent by the GMSC;

The HLR/HSS sends a service routing response message to the gateway device, where the service routing response message includes service routing information, including:

The HLR/HSS sends a service routing message to the IWF;

Receiving, by the HLR/HSS, a service routing response message sent by the IWF, where the service routing response message includes MSC/VLR information;

The HLR/HSS sends a service route response message to the GMSC, where the service route response message includes the MSC/VLR information.

The method according to claim 4 or 5, wherein after the HLR/HSS sends the service routing response message to the GMSC, the method further includes:

Receiving, by the MSC/VLR, an initial address message sent by the GMSC;

The MSC/VLR sends a paging request message to the MME, so that the MME pages the UE, so that the UE falls back to the 2G/3G network through the CSFB process.

7. The method of claim 1 wherein:

The HLR/HSS sends a service routing response message to the gateway device, where the service routing response message includes service routing information, including: the HLR/HSS sends a service routing response message to the GMSC, and the service routing response message Contains IWF information.

The method according to claim 7, wherein after the HLR/HSS sends the service routing response message to the GMSC, the method further includes:

Sending, by the GMSC, a service routing message to the IWF;

Receiving, by the GMSC, a service routing response message sent by the IWF, where the service routing response message includes MSC/VLR information;

The GMSC sends an initial address message to the MSC/VLR to cause the MSC/VLR to The MME sends a paging request message to cause the MME to page the UE, so that the UE falls back to the 2G/3G network through the CSFB process.

The method according to claim 1, wherein the method further comprises: the HLR/HSS knowing that the CSFB type is Gs CSFB.

The method according to claim 9, wherein the HLR/HSS knows that the CSFB type is Gs CSFB, including:

The HLR/HSS acquires a CSFB type identifier;

The HLR/HSS knows that the CSFB type is Gs CSFB according to the CSFB type identifier.

The method according to claim 10, wherein the acquiring, by the HLR/HSS, the CSFB type identifier comprises:

Receiving, by the HLR/HSS, a request message sent by the IWF, where the request message includes a CSFB type identifier; or

The HLR/HSS receives a request message sent by the IWF, where the request message does not include an SMS-only indication.

12. A service processing device, comprising: