WO2015149234A1

WO2015149234A1 - Service processing method and device

Info

Publication number: WO2015149234A1
Application number: PCT/CN2014/074429
Authority: WO
Inventors: 舒文杰; 张崇铭; 舒文江
Original assignee: 华为技术有限公司
Priority date: 2014-03-31
Filing date: 2014-03-31
Publication date: 2015-10-08
Also published as: CN105284154A

Abstract

Disclosed are a service processing method and device. The method comprises: a base station obtains the LAI of a user equipment (UE) and the LAI of a target 2G/3G cell of the UE; when determining that the LAI of the UE is different from the LAI of the target 2G/3G cell, transmitting the LAI of the UE to the UE by carrying the LAI of the UE in the system information of the target 2G/3G cell, so that when the UE receives the system information of the target 2G/3G cell, the UE reselects to the target 2G/3G cell and detects that the LAI of the target 2G/3G cell is the same as the LAI of the UE, and no longer initiates a location update operation but directly initiates CS service calling, thus avoiding long time performance of a circuit-switched fallback (CSFB) process, when initiating a location update operation, due to inconsistency between the LAI of the target 2G/3G cell and the LAI of the UE, to effectively shorten the time for performing the CSFB process.

Description

Method and device for business processing

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

With the development of communication network technology, the Long Term Evolution (LTE) technology has developed rapidly, and the spectrum efficiency and data transmission rate have increased significantly. However, the voice service carrying capacity in LTE is still immature.

In the initial stage of LTE network construction, the user equipment does not support Voice over IP (VoIP). The core network does not deploy IP Multimedia Subsystem (IMS). The voice service of the LTE system can only fall back to the second generation communication system. (2G, The Second Generation) / The third generation communication system (3G, The Third Generation) cell, this process is called the CSFB (Circuit-Switched FallBack) process, but the current CSFB process has a long delay. That is, the call setup time of the CSFB is longer than the time when the user equipment directly initiates the voice service in the Global System For Mobile Communication (GSM) and the Universal Mobile Telecommunication System (UMTS), which seriously affects the user experience.

It can be seen that how to improve the delay of the CSFB process in the LTE system becomes an urgent problem to be solved. Summary of the invention

In view of this, the embodiment of the present invention provides a service processing method and device, which are used to solve the delay problem of the CSFB process in the LTE system.

According to a first aspect, a method for service processing is provided, including:

Obtaining, by the base station, a location area identifier LAI of the user equipment and a location area identifier LAI of the target 2G/3G cell of the user equipment, where the target 2G/3G cell performs circuit handover for the user equipment Switch back to the target cell of the CSFB operation;

When the LAI of the user equipment is different from the LAI of the target 2G/3G cell, the base station sends the LAI of the user equipment to the user equipment in the system information of the target 2G/3G cell. So that the user equipment directly initiates a circuit switched CS service call within the target 2G/3G cell.

In a possible implementation manner of the first aspect of the present invention, in a first possible implementation, the acquiring, by the base station, the location area identifier LAI of the user equipment includes:

The base station determines the LAI of the user equipment according to the correspondence between the tracking area identifier TAI of the user equipment and the preset TAI and LAI.

In a possible implementation manner of the first aspect of the present invention, in a second possible implementation, the acquiring, by the base station, the LAI of the user equipment includes:

Receiving, by the base station, a circuit switched CS service call request sent by the user equipment, and sending the CS service call request to the mobility management entity MME;

The base station receives the user equipment context modification request UE Context Modification Request message sent by the MME, where the UE Context Modification Request message carries the LAI of the user equipment;

The base station determines an LAI of the user equipment according to the UE Context Modification Request message.

In a possible embodiment of the first aspect of the invention, or in a first possible embodiment of the first aspect of the invention, or in a second possible embodiment of the first aspect of the invention, a third possibility In an implementation manner, the acquiring, by the base station, the LAI of the target 2G/3G cell of the user equipment includes:

The base station receives the measurement information reported by the user equipment, where the measurement information includes an identifier of the target 2G/3G cell;

The base station receives system information of the target 2G/3G cell according to the identifier of the target 2G/3G cell, where the system information carries the LAI of the target 2G/3G cell.

In a possible embodiment of the first aspect of the invention, or in the first aspect of the first aspect of the invention In a possible implementation manner, or in a second possible implementation manner of the first aspect of the present invention, in a fourth possible implementation manner, the base station acquires an LAI of a target 2G/3G cell of the user equipment, including :

Determining, by the base station, a target 2G/3G cell of the user equipment according to a correspondence between a preset long-term evolution LTE cell and a 2G/3G cell that performs CSFB operation, and an LTE cell that is accessed by the user equipment;

The base station receives system information of the target 2G/3G cell, where the system information carries the LAI of the target 2G/3G cell.

In a possible embodiment of the first aspect of the invention, or in a first possible embodiment of the first aspect of the invention, or in a second possible embodiment of the first aspect of the invention, or in the invention In a third possible implementation manner of the first aspect, or in a fourth possible implementation manner of the first aspect of the present invention, in a fifth possible implementation manner, the mobile switching center that allocates the LAI to the user equipment The MSC is the same as the MSC connected to the target 2G/3G cell, or the MSC that allocates the LAI for the user equipment and the MSC that is connected to the target 2G/3G cell belong to the same MSC pool.

According to a second aspect, a device for service processing is provided, including:

a location area identifier obtaining module, configured to acquire a location area identifier LAI of the user equipment and a location area identifier LAI of the target 2G/3G cell of the user equipment, where the target 2G/3G cell performs circuit switching for the user equipment Falling back the target cell of the CSFB operation;

a sending module, configured to: when the LAI of the user equipment acquired by the location area identifier obtaining module is different from the LAI of the target 2G/3G cell, carry the LAI of the user equipment in the target 2G/3G The system information of the cell is sent to the user equipment, so that the user equipment directly initiates a circuit switched CS service call in the target 2G/3G cell.

In a possible implementation manner of the second aspect of the present invention, in a first possible implementation manner, the location area identifier acquiring module is specifically configured to: according to a tracking area identifier TAI of the user equipment and a preset TAI and the LAI Corresponding relationship, determining the LAI of the user equipment.

In a possible implementation manner of the second aspect of the present invention, in a second possible implementation manner, The location area identifier obtaining module is configured to receive the circuit switched CS service call request sent by the user equipment, and send the CS service call request to the mobility management entity MME; and receive the user equipment context modification request UE Context sent by the MME a Modification Request message, where the UE Context Modification Request message carries the LAI of the user equipment;

Determining, according to the UE Context Modification Request message, the user equipment

LAI.

In a possible embodiment of the second aspect of the invention, or in the first possible embodiment of the second aspect of the invention, or in the second possible embodiment of the second aspect of the invention, the third possibility In an embodiment, the location area identifier obtaining module is specifically configured to receive measurement information reported by the user equipment, where the measurement information includes an identifier of the target 2G/3G cell;

And receiving system information of the target 2G/3G cell according to the identifier of the target 2G/3G cell, where the system information carries the LAI of the target 2G/3G cell.

In a possible embodiment of the second aspect of the invention, or in the first possible embodiment of the second aspect of the invention, or in the second possible embodiment of the second aspect of the invention, the fourth possibility In an embodiment, the location area identifier obtaining module is specifically configured to determine, according to a preset long-term evolution LTE cell, a correspondence between a 2G/3G cell that performs CSFB operation, and an LTE cell that is accessed by the user equipment. a target 2G/3G cell of the user equipment; and

Receiving system information of the target 2G/3G cell, where the system information carries the LAI of the target 2G/3G cell.

In a possible embodiment of the second aspect of the invention, or in a first possible embodiment of the second aspect of the invention, or in a second possible embodiment of the second aspect of the invention, or in the invention In a third possible implementation manner of the second aspect, or in a fourth possible implementation manner of the second aspect of the present invention, in a fifth possible implementation manner, the mobile switching center that allocates the LAI to the user equipment The MSC is the same as the MSC connected to the target 2G/3G cell, or the MSC that allocates the LAI for the user equipment and the MSC that is connected to the target 2G/3G cell belong to the same MSC pool. According to the third aspect, a device for service processing is provided, including:

a signal receiver, configured to receive a location area identifier LAI of the user equipment and a location area identifier LAI of the target 2G/3G cell of the user equipment, where the target 2G/3G cell performs circuit switching fallback CSFB for the user equipment Target cell of operation;

a processor, configured to: when the LAI of the user equipment is different from the LAI of the target 2G/3G cell, carry the LAI of the user equipment in system information of the target 2G/3G cell, and send the User equipment, such that the user equipment directly initiates a circuit switched CS service call within the target 2G/3G cell.

In a first possible implementation manner of the third aspect of the present invention, the signal receiver is specifically configured to: according to a tracking area identifier TAI of the user equipment and a preset correspondence between the TAI and the LAI , determining the LAI of the user equipment.

In a possible implementation manner of the third aspect of the present invention, in a second possible implementation, the signal receiver is configured to receive a circuit switched CS service call request sent by the user equipment, and send the request to the mobility management entity MME. The CS service call request; and receiving the user equipment context modification request UE Context Modification Request message sent by the MME, where the UE Context Modification Request message carries the LAI of the user equipment;

LAI.

In a possible embodiment of the third aspect of the invention, or in the first possible embodiment of the third aspect of the invention, or in the second possible embodiment of the third aspect of the invention, the third possibility In an embodiment, the signal receiver is specifically configured to receive measurement information reported by the user equipment, where the measurement information includes an identifier of the target 2G/3G cell;

In a possible embodiment of the third aspect of the invention, or in the first possible embodiment of the third aspect of the invention, or in the second possible embodiment of the third aspect of the invention, the fourth possibility In an implementation manner, the signal receiver is specifically configured to perform LTE according to a preset long term evolution. Determining a correspondence between the cell and the 2G/3G cell performing the CSFB operation and the LTE cell accessed by the user equipment, and determining a target 2G/3G cell of the user equipment;

In a possible embodiment of the third aspect of the invention, or in a first possible embodiment of the third aspect of the invention, or in a second possible embodiment of the third aspect of the invention, or in the invention In a third possible implementation manner of the third aspect, or in a fourth possible implementation manner of the third aspect of the present invention, in a fifth possible implementation manner, the mobile switching center that allocates the LAI to the user equipment The MSC is the same as the MSC connected to the target 2G/3G cell, or the MSC that allocates the LAI for the user equipment and the MSC that is connected to the target 2G/3G cell belong to the same MSC pool.

The beneficial effects of the present invention are as follows:

In the embodiment of the present invention, the base station acquires the location area identifier LAI of the user equipment and the location area identifier LAI of the target 2G/3G cell of the user equipment; determining that the LAI of the user equipment is not related to the LAI of the target 2G/3G cell. At the same time, the LAI of the user equipment is carried in the system information of the target 2G/3G cell and sent to the user equipment, so that the user equipment directly initiates a CS service call in the target 2G/3G cell. In this way, when receiving the system message of the target 2G/3G cell, the user equipment reselects to the target 2G/3G cell, and finds that the LAI of the target 2G/3G cell is the same as the LAI of the user equipment, and does not need to initiate the location update operation again. Instead, the CS service call is directly initiated, which avoids the problem that the user equipment initiates the location area update operation because the LAI of the target 2G/3G cell is different from the LAI of the user equipment when performing the CSFB operation, and the CSFB process execution time is relatively long. Effectively shorten the execution time of the CSFB process and solve the delay problem of the CSFB process in the LTE system. DRAWINGS

FIG. 1 is a schematic flowchart diagram of a method for service processing according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of a device for processing a service according to Embodiment 2 of the present invention; FIG. 3 is a schematic structural diagram of a device for processing a service according to Embodiment 2 of the present invention. detailed description

In order to achieve the object of the present invention, an embodiment of the present invention provides a method and a device for processing a service, where a base station acquires a location area identifier (LAI) of a user equipment and a location of a target 2G/3G cell of the user equipment. The area identifier LAI; when it is determined that the LAI of the user equipment is different from the LAI of the target 2G/3G cell, the LAI of the user equipment is carried in the system information of the target 2G/3G cell, and sent to the And the user equipment, so that the user equipment directly initiates a CS (Circuit Switched) service call in the target 2G/3G cell.

In this way, when receiving the system message of the target 2G/3G cell, the user equipment reselects to the target 2G/3G cell, and finds that the LAI of the target 2G/3G cell is the same as the LAI of the user equipment, and does not need to initiate the location update operation again. It avoids the problem that the user equipment initiates the location area update operation when the LAI of the target 2G/3G cell is different from the LAI of the user equipment when performing the CSFB operation, and the CSFB process execution time is relatively long, effectively shortening the execution time of the CSFB process. It solves the delay problem of the CSFB process in the LTE system.

When the user equipment accesses the LTE cell, the mobile switching center is obtained through the EPS/IMSI (Evolved Packet System/International Mobile Subscriber Identifier) registration process (the combined EPS/IMSI attach procedure). MSC, Mobile Switching Centered) LAI of the user equipment allocated; or, by the combined TA/LA Update procedure, obtain the LAI of the user equipment allocated by the MSC.

The so-called joint EPS/IMSI registration process and/or the joint location area update process is a process in which the user equipment initiates a location registration/update request to the MME (Mobile Management Entity), so that the user equipment is simultaneously registered on the MME and the MSC. The update is successful, and after the registration/update is completed, the MSC allocates the LAI to the user equipment, and sends the LAI to the user equipment.

Since the LAI of the user equipment changes during the LTE cell camping period, the user equipment acquires the MSC in real time by initiating a joint location area update procedure. The assigned LAI.

Specifically, the manner in which the user equipment obtains the LAI allocated by the MSC by initiating the joint location area update process includes but is not limited to:

First, after entering the LTE serving cell, the user equipment initiates a joint location area update request message to the MME to which the LTE serving cell belongs, that is, TAU requesto

The joint location area update request message includes the IMSI of the user equipment and the Globally Unique Temporary Identifier (GUTI).

Second, the MME determines whether the user equipment can register/update on the current MME according to the GUTI identifier reported by the user equipment.

Specifically, if the MME determines to accept the user equipment TAU request, the user equipment returns a tracking area identifier (TAI, Tracking Area Identity) in the TAU accept message.

In addition, the MME initiates a location area update request to the MSC instead of the user equipment before transmitting the TAU accept message, and the MSC initiates a registration inquiry notification to the visitor location register (VLR, Visited Location Register) according to the IMSI of the user equipment.

At this time, the VLR confirms whether the user equipment is registered in the VLR, and when it is determined that the user equipment is registered in the VLR, directly returns the registration query result information to the MSC; when it is determined that the user equipment is not registered in the VLR, And according to the IMSI of the user equipment, initiating a query request to the home location register (HLR, Home Location Register) to which the user equipment belongs, and receiving the query result information returned by the HLR, and feeding back the received query result information to the MSC.

The query result information includes the subscription information of the user equipment, and the subscription information is used by the MSC to determine whether to accept the location area update request of the user equipment.

The MSC determines whether to respond to the location area update request according to the received query result information. When the MSC determines to accept the location area update request of the user equipment according to the query result information, the MME returns a current location area identifier LAI to the MME, and the MME sends the information to the user equipment in the TAU Accept message.

Here, the process of acquiring the LAI by the user equipment is described. When the user equipment initiates the CS service call request in the LTE cell, the target of the user equipment reselection is found in the process of executing the CSFB process. When the LAI of the 2G/3G cell is different from the LAI obtained by the user equipment, the location area update process is performed first, and after the location area update process is executed, the CSFB process is executed, which causes the CSFB process to exist. Delay the problem.

The various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Embodiment 1:

FIG. 1 is a schematic flow chart of a method for service processing according to Embodiment 1 of the present invention. The method can be as follows.

Step 101: The base station acquires the LAI of the user equipment.

In step 101, before acquiring the LAI of the user equipment, the base station receives the CS service call request sent by the user equipment, and sends the CS service call request to the MME.

The CS service call request is sent by an Extended Service Request bearer.

The CS service call request carries a call type indication, and the call type indication is a CSFB call type.

Specifically, the manner in which the base station acquires the LAI of the user equipment includes but is not limited to the following: The first manner:

Receiving a CS service call request sent by the user equipment, where the CS service call request includes the LAI of the user equipment.

In this manner, when the user equipment acquires the LAI allocated by the MSC, it is stored in the local area of the user equipment, so that the user equipment carries the saved LAI when sending the CS service call request.

The second way:

The base station determines the LAI of the user equipment according to the correspondence between the TAI (Tracking Area Identity) of the user equipment and the preset TAI and the LAI.

It should be noted that the TAI of the user equipment is the same as the TAI of the LTE cell accessed by the user equipment, and the base station stores the TAI of the LTE cell accessed by the user equipment.

When the base station receives the CS service call request sent by the user equipment, the base station can determine the TAI of the user equipment according to the TAI of the LTE cell accessed by the user equipment. The third mode is: obtaining the LAI of the user equipment from the MME, as follows: The base station receives the CS service call request sent by the user equipment, and sends the CS service call request to the MME; and receives the user equipment context modification request sent by the MME. (UE Context

a Modification Request message, wherein the UE Context Modification Request message carries the LAI of the user equipment;

The base station determines the LAI of the user equipment according to the UE Context Modification Request message. It should be noted that the LAI carried by the UE Context Modification Request message is allocated by the MSC to the user equipment when the user equipment initiates the location registration/update process, and the MME saves the local MME.

Step 102: The base station acquires the LAI of the target 2G/3G cell of the user equipment.

In step 102, the manner in which the base station acquires the LAI of the target 2G/3G cell of the user equipment includes but is not limited to:

The first way:

The base station receives the measurement information reported by the user equipment, where the measurement information includes the target of the target 2G/3G cell;

The second way:

The base station determines the target 2G/3G cell of the user equipment according to the correspondence between the preset LTE cell and the 2G/3G cell that performs CSFB operation and the LTE cell that the user equipment accesses;

It should be noted that the manner in which the base station receives the system information of the target 2G/3G cell includes but is not limited to:

The base station uses the RIM (RAN Information Management) procedure to receive system information of the target 2G/3G cell through the control device of the target 2G/3G cell of the user equipment.

Specifically, the base station sends a request message to the target 2G/3G cell, where the request message is used to obtain Obtaining system information of the target 2G/3G cell; and receiving system information sent by the target 2G/3G cell. It should be noted that the 2G/3G cell includes but is not limited to: a cell supporting the GSM (Global System for Mobile communication) network standard, and supports TD-SCDMA (Time Division Synchronized Code Division Multiple Access). a network-based cell, a cell supporting WCDMA (Wide-Band Code Division Multiple Access) network standard, a cell supporting CDMA (Code Division Multiple Addressing) network standard, and support One or more of the cells of the CDMA2000 network standard.

The system information may include the identifier of the target 2G/3G cell, the frequency point, and the like, in addition to the location area identifier LAI of the target 2G/3G cell.

For example, the system information of the GSM cell obtained by the base station through the RIM process, for example, SI (System Information) 1, SI3 and SI 13, wherein the location area identifier LAI of the GSM cell is included in the SI13.

Step 103: The base station, when determining that the LAI of the user equipment is different from the LAI of the target 2G/3G cell, carries the LAI of the user equipment in the system information of the target 2G/3G cell and sends the information to the user equipment.

The base station may carry the system information in the fallback indication message and send it to the user equipment, and may also carry the system information in other messages and send it to the user equipment, which is not limited herein.

For example, after receiving the CS service call request of the user equipment, the base station sends the CS service call request message to the MME. After receiving the CS service call request message, the MME sends a CSFB operation indication to the base station, and the base station sends a fallback indication message to the user equipment. The UE is instructed to perform a fallback operation, and the fallback indication message carries the system message in step 103.

The CSFB operation indication is carried to the base station by using the UE Context Modification Request message, which is not limited herein.

In step 103, the coverage area of one MSC is divided into multiple location areas (referring to geographic location areas), each location area is identified by a unique LAI, and the serving cells included in each location area include but are not limited to A problem in which communication signals of different network standards are repeatedly covered in one area, which means that the location area corresponding to the serving cell of different network systems has the same LAI. In case, the present invention is mainly directed to the case where the location area identifier LAI corresponding to the serving cell of different network systems is different.

Generally, in order to obtain the location information of the user equipment in time, the MSC needs to perform a location update operation when the user equipment crosses different LAIs, which means that when the user equipment falls back from the LTE cell to the 2G/3G cell, the location may be needed. Update, this is the root cause of the long CSFB process.

Specifically, before the user equipment initiates the CSFB process, the base station needs to confirm whether the mobile switching center MSC that allocates the LAI for the user equipment and the MSC that the target device performs the CSFB operation target 2G/3G cell are the same MSC, or belong to The same MSC pool, if not the same MSC and does not belong to the same MSC pool, does not perform the subsequent operations of the present invention, and the MSC connected by the target 2G/3G cell needs to reallocate the LAI for the user equipment, and performs a location update procedure.

This confirmation process can be preset during the network planning, or can be notified to the base station through the network management system whether the operation can be performed, which is not limited herein.

The MSC that is determined to allocate the LAI for the user equipment and the MSC that the target device performs the CSFB operation to connect to the target 2G/3G cell are the same MSC, or, when belonging to the same MSC pool, further determine the LAI of the user equipment and the target 2G/ Is the LAI of the 3G cell the same?

When it is determined that the LAI of the user equipment is different from the LAI of the target 2G/3G cell, the LAI of the user equipment is carried in the target 2G/3G cell system information and sent to the user equipment.

It should be noted that the base station sends the target 2G/3G cell system information to the user equipment, and the user equipment determines whether the LAI of the target 2G/3G cell that performs the CSFB process is the same as the LAI of the user equipment. If not, the user equipment is heavy. After the target 2G/3G cell is selected, the location update process is initiated. If the user equipment is reselected to the target 2G/3G cell, the location area update process is not initiated, and the voice call service is directly initiated.

Because the base station changes the LAI of the target 2G/3G cell that performs the CSFB procedure to the LAI of the user equipment in step 103, when the user equipment receives the modified LAI of the target 2G/3G cell that performs the CSFB procedure sent by the base station, It can be determined that the LAI of the target 2G/3G cell performing the CSFB process is the same as the LAI of the user equipment, thus avoiding the user equipment performing the CSFB flow. The location update process is initiated again before the process.

With the solution of the first embodiment of the present invention, the base station acquires the LAI of the user equipment and the LAI of the target 2G/3G cell of the user equipment; when determining that the LAI of the user equipment is different from the LAI of the target 2G/3G cell, the LAI of the user equipment is used. The system information carried in the target 2G/3G cell is sent to the user equipment, so that when the user equipment receives the system message of the target 2G/3G cell, the user equipment reselects to the target 2G/3G cell, and discovers the target 2G/3G cell. The LAI is the same as the LAI of the user equipment, and no longer initiates a location update operation, but directly initiates a CS service call. The solution provided by the embodiment avoids the problem that the user equipment initiates the location area update operation when the LAI of the target 2G/3G cell is different from the LAI of the user equipment when performing the CSFB operation, thereby causing a long execution time of the CSFB process, effectively Reduce the execution time of the CSFB process.

Embodiment 2:

FIG. 2 is a schematic structural diagram of a device for processing a service according to Embodiment 2 of the present invention, which may be used to perform the method process of Embodiment 1, where the device includes: a location area identifier acquiring module 11 and a sending module. 12, where:

The location area identifier obtaining module 11 is configured to acquire a location area identifier LAI of the user equipment and a location area identifier LAI of the target 2G/3G cell of the user equipment, where the target 2G/3G cell performs a circuit for the user equipment Switching back to the target cell of the CSFB operation;

The sending module 12 is configured to carry the LAI of the user equipment in the target 2G/3G when the LAI of the user equipment acquired by the location area identifier obtaining module 11 is different from the LAI of the target 2G/3G cell. The system information of the cell is sent to the user equipment, so that the user equipment directly initiates a circuit switched CS service call in the target 2G/3G cell.

Optionally, the location area identifier obtaining module 11 is specifically configured to determine the LAI of the user equipment according to the correspondence between the tracking area identifier TAI of the user equipment and the preset TAI and the LAI.

Optionally, the location area identifier obtaining module 11 is specifically configured to:

Receiving a CS service call request sent by the user equipment, and sending the CS service call request to the MME;

Receiving a user equipment context modification request sent by the MME, UE Context Modification a request message, where the UE Context Modification Request message carries the LAI of the user equipment;

LAI.

Receiving measurement information reported by the user equipment, where the measurement information includes the target

The identity of the 2G/3G cell;

Determining a target 2G/3G cell of the user equipment according to a preset long-term evolution LTE cell and a corresponding relationship between a 2G/3G cell performing CSFB operation and an LTE cell accessed by the user equipment;

It should be noted that the mobile switching center MSC that allocates the LAI for the user equipment and the MSC that is connected to the target 2G/3G cell in which the user equipment performs the CSFB operation are the same mobile switching center MSC, or are allocated for the user equipment. The MSCs connected to the target 2G/3G cell by the MSC of the LAI belong to the same MSC pool.

The device in the second embodiment of the present invention may be implemented in a software manner or in a hardware manner, which is not limited herein.

Embodiment 3:

FIG. 3 is a schematic structural diagram of a device for processing a service according to Embodiment 3 of the present invention. The device may be specifically configured to perform the method steps of Embodiment 1, where the device includes a signal receiver 21 and a processor. 22, wherein the signal receiver 21 and the processor 22 are connected by a bus 23.

The signal receiver 21 is configured to receive a location area identifier LAI of the user equipment and a location area identifier LAI of the target 2G/3G cell of the user equipment, where the target 2G/3G cell is the user The device performs circuit switching to fall back to the target cell of the CSFB operation;

The processor 22 is configured to: when the LAI of the user equipment is different from the LAI of the target 2G/3G cell, send the LAI of the user equipment to the system information of the target 2G/3G cell and send the information to the Describe the user equipment, such that the user equipment directly initiates a circuit switched CS service call within the target 2G/3G cell.

Specifically, the signal receiver 21 is specifically configured to determine the LAI of the user equipment according to the correspondence between the tracking area identifier TAI of the user equipment and the preset TAI and the LAI.

The signal receiver 21 is configured to receive a circuit switched CS service call request sent by the user equipment, and send a CS service call message carrying the call type CSFB to the mobility management entity MME; and receive the user equipment sent by the MME a Context Modification Request (UE Context Modification Request) message, where the UE Context Modification Request message carries the LAI of the user equipment;

LAI.

The interface 21 is specifically configured to receive measurement information reported by the user equipment, where the measurement information includes an identifier of the target 2G/3G cell;

The interface 21 is specifically configured to determine a target 2G/ of the user equipment according to a correspondence between a preset long-term evolution LTE cell and a 2G/3G cell that performs CSFB operation, and an LTE cell that is accessed by the user equipment. 3G cell; and

It should be noted that the mobile switching center MSC that allocates the LAI for the user equipment and the MSC that is connected to the target 2G/3G cell in which the user equipment performs the CSFB operation are the same mobile switching center MSC, or are allocated for the user equipment. The MSCs connected to the target 2G/3G cell by the MSC of the LAI belong to the same MSC pool. The function of the base station in the embodiment of the present invention may be implemented in the manner of the second embodiment of the present invention, or may be implemented in the manner of the third embodiment of the present invention. The processor may be a central processing unit, which is not limited herein.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

Rights request

1. A business processing method, characterized by including:

The base station obtains the location area identifier LAI of the user equipment and the location area identifier LAI of the target 2G/3G cell of the user equipment, where the target 2G/3G cell is the target cell where the user equipment performs the circuit-switched fallback CSFB operation;

When the LAI of the user equipment is different from the LAI of the target 2G/3G cell, the base station carries the LAI of the user equipment in the system information of the target 2G/3G cell and sends it to the user equipment. , so that the user equipment directly initiates a circuit-switched CS service call in the target 2G/3G cell.

2. The method of claim 1, wherein the base station obtains the location area identifier LAI of the user equipment, including:

The base station determines the LAI of the user equipment according to the tracking area identifier TAI of the user equipment and a preset corresponding relationship between TAI and LAI.

3. The method of claim 1, wherein the base station obtains the LAI of the user equipment, including:

The base station receives the circuit-switched CS service call request sent by the user equipment, and sends the CS service call request to the mobility management entity MME; and

The base station receives the UE Context Modification Request message sent by the MME, where the UE Context Modification Request message carries the LAI of the user equipment;

The base station determines the LAI of the user equipment according to the UE Context Modification Request message.

4. The method according to any one of claims 1 to 3, characterized in that the base station obtains the LAI of the target 2G/3G cell of the user equipment, including:

The base station receives the measurement information reported by the user equipment, wherein the measurement information includes the identification of the target 2G/3G cell; The base station receives the system information of the target 2G/3G cell according to the identification of the target 2G/3G cell, where the system information carries the LAI of the target 2G/3G cell.

5. The method according to any one of claims 1 to 3, wherein the base station obtains the LAI of the target 2G/3G cell of the user equipment, including:

The base station determines the target 2G/3G cell for the user equipment based on the preset corresponding relationship between the Long Term Evolution LTE cell and the 2G/3G cell that performs CSFB operation and the LTE cell accessed by the user equipment;

6. The method according to any one of claims 1 to 5, characterized in that the mobile switching center MSC that allocates LAI to the user equipment is the same as the MSC connected to the target 2G/3G cell, or is the The MSC to which the user equipment allocates LAI and the MSC connected to the target 2G/3G cell belong to the same MSC pool.

7. A business processing equipment, characterized by including:

A location area identification acquisition module, configured to obtain the location area identification LAI of the user equipment and the location area identification LAI of the target 2G/3G cell of the user equipment, wherein the target 2G/3G cell performs circuit switching for the user equipment. Fall back to the target cell for CSFB operation;

A sending module, configured to carry the LAI of the user equipment in the target 2G/3G cell when the LAI of the user equipment obtained by the location area identification acquisition module is different from the LAI of the target 2G/3G cell. The system information of the cell is sent to the user equipment, so that the user equipment directly initiates a circuit-switched CS service call in the target 2G/3G cell.

8. The device according to claim 7, characterized in that,

The location area identification acquisition module is specifically configured to determine the LAI of the user equipment according to the tracking area identification TAI of the user equipment and the preset correspondence between TAI and LAI.

9. The device according to claim 7, characterized in that,

The location area identification acquisition module is specifically configured to receive a circuit-switched CS service call request sent by the user equipment, and send the CS service call request to the mobility management entity MME; and receive The user equipment context modification request UE Context Modification Request message sent by the MME, wherein the UE Context Modification Request message carries the LAI of the user equipment;

According to the UE Context Modification Request message, determine the user equipment

LAI.

10. The device according to any one of claims 7 to 9, characterized in that,

The location area identification acquisition module is specifically configured to receive measurement information reported by the user equipment, wherein the measurement information includes the identification of the target 2G/3G cell; and

According to the identification of the target 2G/3G cell, the system information of the target 2G/3G cell is received, where the system information carries the LAI of the target 2G/3G cell.

11. The device according to any one of claims 7 to 9, characterized in that,

The location area identifier acquisition module is specifically configured to determine the user equipment's location based on the preset correspondence between the long-term evolution LTE cell and the 2G/3G cell that performs CSFB operations and the LTE cell accessed by the user equipment. Target 2G/3G cell; and

Receive system information of the target 2G/3G cell, where the system information carries the LAI of the target 2G/3G cell.

12. The device according to any one of claims 7 to 11, wherein the mobile switching center MSC that allocates LAI to the user equipment is the same as the MSC connected to the target 2G/3G cell, or is the The MSC to which the user equipment allocates LAI and the MSC connected to the target 2G/3G cell belong to the same MSC pool.

13. A business processing equipment, characterized by: including:

A signal receiver configured to receive the location area identifier LAI of the user equipment and the location area identifier LAI of the target 2G/3G cell of the user equipment, wherein the target 2G/3G cell performs circuit-switched fallback CSFB for the user equipment. The target cell of the operation;

A processor configured to carry the LAI of the user equipment in the system information of the target 2G/3G cell and send it to the target 2G/3G cell when the LAI of the user equipment is different from the LAI of the target 2G/3G cell. User equipment, so that the user equipment directly initiates power transmission in the target 2G/3G cell Route-switched CS service calls.

14. The device according to claim 13, characterized in that,

The signal receiver is specifically configured to determine the LAI of the user equipment according to the tracking area identifier TAI of the user equipment and the preset correspondence between the TAI and the LAI.

15. The device according to claim 13, characterized in that,

The signal receiver is specifically configured to receive a circuit-switched CS service call request sent by the user equipment, and send the CS service call request to the mobility management entity MME; and receive the user equipment context modification request UE Context sent by the MME. Modification Request message, wherein the UE Context Modification Request message carries the LAI of the user equipment; according to the UE Context Modification Request message, determine the LAI of the user equipment

LAI.

16. The device according to any one of claims 13 to 15, characterized in that,

The signal receiver is specifically configured to receive measurement information reported by the user equipment, wherein the measurement information includes the identification of the target 2G/3G cell; and

17. The device according to any one of claims 13 to 15, characterized in that,

The signal receiver is specifically configured to determine the target 2G of the user equipment based on the preset correspondence between the Long Term Evolution LTE cell and the 2G/3G cell that performs CSFB operation and the LTE cell accessed by the user equipment. /3G cell; and

18. The device according to any one of claims 13 to 17, wherein the mobile switching center MSC that allocates LAI to the user equipment is the same as the MSC connected to the target 2G/3G cell, or is the The MSC to which the user equipment allocates LAI and the MSC connected to the target 2G/3G cell belong to the same MSC pool.