WO2010075800A1

WO2010075800A1 - Method and terminal for controlling location update

Info

Publication number: WO2010075800A1
Application number: PCT/CN2009/076324
Authority: WO
Inventors: 陈中平; 于益俊; 胡伟华
Original assignee: 华为技术有限公司
Priority date: 2008-12-31
Filing date: 2009-12-31
Publication date: 2010-07-08
Also published as: CN101771991B; CN101771991A

Abstract

A method and terminal for controlling location update are disclosed in the present invention, belonging to the field of mobile communications. Said method includes that: when moving between a General Packet Radio Service/Enhanced Data Rate for GSM Evolution Radio Access Network/Universal Mobile Telecommunications System Territorial Radio Access Network (GERAN/UTRAN) and an Evolved Universal Mobile Telecommunications System Territorial Radio Access Network (E-UTRAN), the terminal performs location update in a first network in which the terminal currently locates, and sets a location update identification; when moving from said first network to a second network, said terminal determines whether to perform location update in said second network according to said location update identification. Said terminal includes: a setting module and a control module. The present invention instructs the terminal, when moving between the E-UTRAN network and the GERAN/UTRAN network in a subsequence idle mode, to control the location update of the terminal by setting the location update identification.

Description

Method and terminal for controlling location update

Technical field

The present invention relates to the field of mobile communication technologies, and in particular, to a method and a terminal for controlling location update. Background technique

With the development of the wireless broadband technology, the Evolved Packet System (Evolved Packet Network), Evolved Universal Mobile Telecommunications System Territorial Radio Access Network (Evolved Universal Mobile Telecommunications System) System land wireless access network). Existing GERAN (GPRS/EDGE Radio Access Network, General Packet Radio Service/Enhanced Data Rate for GSM Evolution Radio Access Network, General Radio Packet Service/Enhanced Data Rate Global System for Mobile Communications Evolution Technology Radio Access Network) and UTRAN (UMTS Territorial Radio Access Network, Universal Mobile Telecommunications System Terrestrial Radio Access Network) There are both CS (Circuit Switched) and PS (Packet Switched) domains, while only the PS domain is reserved in E-UTRAN. . The CS domain mainly handles voice services, and the PS domain mainly handles Internet services.

Since many services are currently running in the CS domain, in order to reuse the existing CS domain services in the EPS network, a method of connecting the EPS network to the CS domain core network is proposed. Referring to Figure 1, an architectural diagram of an E-UTRAN network connected to a GERAN UTRAN network. The signaling plane control entity of the CS domain is MSC1 or MSC2 (Mobile Switch Center). The radio access network element BSC (Base Station Controller) in the GERAN network is connected to the MSC2 through the A interface. The radio access network element RNC (Radio Network Controller) in the UTRAN network passes through the Iu-CS interface. MSC2 is connected. When there is a Gs interface between the SGSN (Serving GPRS Support Node) and the MSC2, the GERAN/UTRAN network supports joint routing update, that is, the location update of the CS domain and the PS domain is completed simultaneously. The MME (Mobility Management Entity) in the E-UTRAN network is responsible for allocating user temporary identity, signaling encryption, roaming, tracking, and security functions. The SGW (Serving Gateway) is responsible for mobility anchors and lawful interception. Related information, P-GWCPDN Gateway, ie Packet Data Network Gateway, is responsible for policy enforcement and charging and lawful interception related functions. And the P-GW is connected to the MSC1 of the traditional CS domain core network through an IWF (Interworking Function) entity, and the IWF has the capability of simulating the Iu-CS/A interface. Sv is a reference point between the MME and the IWF, and Z1 is a reference point between the UE (User Equipment) and the IWF. In addition, the SGW is connected to the SGSN, so that when the UE has the called service, the MSC1 can page the UE in the two networks, and the SGW and the SGSN are in the SGW. The UE is paged in the GERAN/UTRAN network, and the UE is paged in the E-UTRAN network through the SGW and the eNB (evolved Node-B, evolved base station). Among them, MSC1 and MSC2 can be one MSC.

In the prior art, the access system changes, and the UE in the idle state needs to perform an update process, such as performing a RAU (Routing Area Update) process in the GERAN UTRAN network, or performing TAU (Trace Area Update) in the E-UTRAN network. , tracking area update) process. In order to reduce the mobility management procedure of the UE in the idle mode due to the change of the access system, the ISR (Idle mode Signalling Reduction) function is introduced. When the ISR is started, the UE maintains the registration state in the GERAN/UTRAN network and the E-UTRAN network. When the UE in the idle mode moves in the current registration area, the corresponding mobility management process is not triggered because the access system changes. The location update is not performed, so that the effect of saving signaling can be achieved.

After analyzing the above prior art, the inventors found that:

The existing ISR mechanism is mainly aimed at reducing the mobility management process of the PS domain, and does not provide a solution for the CS domain mobility management process. In the existing CS mobility association process scheme, if the UE detects that it enters a new LA (Location Area), the UE triggers the mobility management process of the CS domain, that is, the LAU (Location Area Update, location area). Update) Process.

For example, in the GERAN UTRAN network, the location area where the UE is located is a mixed area, which is both a CS domain and a PS domain. The location area identifier of the CS domain is LAI1, and the location area identifier of the PS domain is RAI1 (routing area). ). After the UE accesses the E-UTRAN network (supporting CSoEPS), the identifiers of the location areas where the UE is located in the E-UTRAN network are respectively the LAI2 of the CS domain and the TAI1 (tracking area) of the PS domain, and if the UE activates the ISR function, The UE's mobility from RAI1 to TAI1 does not trigger the mobility management process of the PS domain, but the UE's movement from LAI1 to LAI2 triggers the LAU process of the CS domain, so the message of the CS domain mobility management process will still be brought. Make the cost problem. Summary of the invention

Embodiments of the present invention provide a method and a terminal for controlling location update. When a terminal moves between an E-UTRAN network and a GERAN/UTRAN network, the terminal controls the location update of the terminal. The technical solution is as follows:

A method for controlling location update, the method comprising: when a terminal moves between a GERAN/UTRAN network and an E-UTRAN network, the terminal performs location update in the first network where the terminal is currently located, and sets a location update identifier;

And when the terminal moves from the first network to the second network, determining, according to the location update identifier, whether to perform location update in the second network.

A terminal, the terminal includes: a setting module, configured to perform location update in a first network where the terminal is currently located, and set a location update identifier; and a control module, configured to: when the terminal moves from the first network to the second network, The location update identifier set by the setting module determines whether the location update is performed in the second network.

In the embodiment of the present invention, by setting a location update identifier, it is indicated that when the terminal moves in the subsequent idle mode, the location of the terminal is updated when the E-UTRAN network and the GERAN/UTRAN network are moved, and the location update may be further reduced, thereby saving signaling overhead. . DRAWINGS

1 is a structural diagram of an E-UTRAN network connected to a GERAN UTRAN network in the prior art;

2 is a flowchart of a method for controlling location update according to an embodiment of the present invention;

3 is a flowchart of a method for controlling location update according to Embodiment 1 of the present invention;

4 is a flow chart of a method for controlling location update according to Embodiment 2 of the present invention;

5 is another flow chart of a method for controlling location update according to Embodiment 2 of the present invention;

6 is a flowchart of a method for controlling location update according to Embodiment 3 of the present invention;

7 is a flowchart of a method for controlling location update according to Embodiment 4 of the present invention;

8 is a flowchart of a method for controlling location update according to Embodiment 5 of the present invention;

9 is a flowchart of a method for controlling location update according to Embodiment 6 of the present invention;

FIG. 10 is a structural diagram of a terminal provided in Embodiment 8 of the present invention. detailed description

In order to make the objects, the technical solutions and the advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

An embodiment of the present invention provides a method for controlling location update. Referring to FIG. 2, when a terminal moves between a GERAN/UTRAN network and an E-UTRAN network, the method includes:

201: The terminal performs location update in the first network where the terminal is currently located, and sets a location update identifier.

202: When the terminal moves from the first network to the second network, according to the location update identifier, determining whether to perform location update in the second network.

In the following embodiments, in conjunction with the network structure shown in FIG. 1, the CS domain service is provided by the MSC1 for the UE in the E-UTRAN network, and the CS domain service is provided by the MSC2 for the UE in the GERAN UTRAN network. Description. An embodiment of the present invention provides a method for controlling location update under an ISR, where the method includes:

When the terminal enters the E-UTRAN from the GERAN/UTRAN network;

The terminal determines whether the MSC currently associated with it is an MSC of the GERAN UTRAN network or an MSC of the E-UTRAN network;

If it is currently associated with the MSC of the GERAN/UTRAN network, the terminal initiates a location update request.

In this embodiment, when the terminal determines that the MSC associated with the E-UTRAN network is associated with the terminal, the terminal may not initiate a location update request.

The terminal may determine whether the MSC that is currently associated with the MSC of the GERAN UTRAN network or the MSC of the E-UTRAN network may be: The terminal determines, according to the association identifier set thereon, whether the MSC currently associated with the MSC is the MSC of the GERAN/UTRAN network or the E- MSC of the UTRAN network. among them

1. When the terminal initiates a location update on the GERAN/UTRAN network, setting the association identifier indicates that the terminal is associated with the MSC of the GERAN/UTRAN network.

2. When the terminal initiates a location update on the E-UTRAN network, setting the association identifier indicates that the terminal is associated with the MSC of the E-UTRAN network.

Example 1

Referring to FIG. 3, the embodiment provides a method for controlling location update, which specifically includes:

301: The terminal completes attachment in the E-UTRAN network and registers with MSC1.

302: When the terminal moves from the E-UTRAN network to the GERAN/UTRAN network in the idle state, (in the PS domain) registers with the GERAN UTRAN network and activates the ISR function, and the terminal (within the CS domain) performs a location update procedure LAU registration to the MSC2 And setting a first location update identifier, where the first location update identifier is used to indicate that a location update procedure needs to be performed when the terminal returns to the E-UTRAN network; and performing a location update procedure according to the first location update identifier when the UE returns to the E-UTRAN network After that, the MSC1 is associated with the MSC1 of the E-UTRAN network, and the MSC1 can send the paging to the two networks simultaneously through the SGSN of the GERAN/UTRAN network and the eNB of the E-UTRAN network, thereby ensuring no matter which network the user is in. , can be paged to the user.

In this step, the UE is in the GERAN/UTRAN network as the mixed area as an example. In the network, the UE performs the routing update process of the PS domain and the location update process of the CS domain. The UE performs routing update of the PS domain and location update of the CS domain, which may be performed in either order or simultaneously.

The UE performs the location update process and completes the registration to the MSC2. The network structure may be implemented in two ways: The first mode: When there is no Gs interface between the SGSN and the MSC2, or the current network mode does not support the joint routing update, the UE Registration to MSC2 is completed by BSC/NC; The second mode: When there is a Gs interface between the SGSN and the MSC2, or the current network mode supports the joint routing update, the UE completes the registration to the MSC2 through the SGSN, and the location update in this manner is the joint routing update.

The process of performing location update of the UE in the GERAN UTRAN network in the first mode is as follows: The UE performs separate RAU and LAU processes respectively, completes registration to the GERAN UTRAN network, and activates the ISR in a separate RAU process. As shown by the dashed box in the figure. In the separate LAU process, complete the registration to MSC2, as follows:

1. The UE sends a LAU Request location update request to the RNC BSC.

2. The RNC/BSC sends a Location Update Request location update request to the MSC2;

3. MSC2 updates the location information to the HSS;

4. The HSS cancels the location information of the MSC1;

5. MSC1 returns a cancel location confirmation message to the HSS;

6. The HSS completes updating the location information of the MSC2, and returns a location update confirmation message to the MSC2;

7. The MSC2 returns a location update accept response message to the RNC/BSC.

8. The RNC/BSC returns a Location Update Accept Response message to the UE, confirming that the MSC2 is associated with the UE.

In the second mode, the UE performs a joint routing update process in the GERAN UTRAN network, completes registration with the MSC2, and activates the ISR in the process. The process is as follows:

1. The UE sends a RAU Request route update request to the SGSN, requesting to perform a joint location update;

2a, the SGSN sends a Location Update Request location update request to the MSC2, requesting to perform a joint location update; 3~6, which is the same as 3~6 in the first mode;

7a. The MSC2 returns a location update accept response message to the SGSN.

8a. The SGSN returns a joint route update accept response message to the UE, confirms that the MSC2 associates with the UE, and activates the ISRo.

Regardless of the first mode or the second mode, after performing the LAU process of the GERAN/UTRAN network, the UE sets the first location update identifier, indicating that the location update LAU process needs to be performed when the terminal returns to the E-UTRAN network. After the UE returns to the E-UTRAN network, the location update procedure is performed according to the first location update identifier, and then the MSC1 of the E-UTRAN network is established, and the MSC1 can pass the IWP and the SGSN of the GERAN/UTRAN network and the eNB of the E-UTRAN network. At the same time, paging is sent to the two networks, thereby ensuring that the user can be paged regardless of the network in which the user is located.

303: When the terminal returns to the E-UTRAN network, update the identifier according to the first location, perform location update, complete registration to the MSC1, and set a second location update identifier, indicating that the terminal is in the E-UTRAN network in the subsequent idle mode. When moving between GERAN/UTRAN networks, no location update is performed. The second location update identifier greatly simplifies the mobility management process of the CS domain of the UE, and saves signaling overhead.

details as follows:

1. The UE completes the association with the IWF. Specifically, if the resource between the UE and the IWF has been released, the UE needs to be re-registered to the IWF. If the resource between the UE and the layer is not released, the UE may perform the IWF. Update, or not update;

2. The UE initiates a LAU process, and sends a UE-IWF UL DIRECT TRANSFER message to the IWF, where the LAU request information is included;

3. The IWF initiates a location update to MSC1;

4. MSC1 updates the location information to the HSS;

5. The HSS cancels the location information of the MSC2;

6. MSC2 returns a cancel location confirmation message to the HSS;

7. The HSS completes the update of the location information of the MSC1, and returns a location update confirmation message to the MSC1;

8. The MSC1 returns a location update accept response message to the IWF;

9. The IWF returns a UE-IWF DL DIRECT TRANSFER message to the UE, which includes the LAU accept message, and confirms that the UE has completed registration to the MSC1.

After the UE performs the above LAU procedure in the E-UTRAN network, the second location update identifier is set to indicate that the location update is not performed when the terminal moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode.

1) The UE may add a location update identifier parameter to the related message sent to the network side, and set the content of the parameter to indicate whether to perform location update, such as setting the parameter to "LAU indication", indicating location update, setting "LAU NOT indication", indicating that no location update is performed;

2) Using the reserved field in the UE, establish a flag bit, and set the value of the flag bit to indicate whether to perform location update. If the flag bit is set to "1", the location update is indicated, and the location is set to "0. ", indicating no location update.

In this embodiment, by setting a second location update identifier, indicating that the terminal is in an idle mode in the E-UTRAN network and

When the GERAN/UTRAN network moves between locations, the location update is not performed, which greatly simplifies the mobility management process of the CS domain of the UE, and saves signaling overhead. Moreover, even if the UE has a CS domain service, the MSC1 can page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. Improve the quality of service. Example 2

In Embodiment 1, when the UE sets the second location update identifier, the UE does not perform location update when moving between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode. In order to prevent the CS domain service from being affected by the second location update identifier when the UE has the CS domain service, the CS domain service of the UE is affected, or even a service interruption occurs, or the paging blind zone of the PS domain exists in the network. The user cannot be paged to the user. In this embodiment, the process of determining and processing is added on the basis of the first embodiment, and the location update is jointly determined according to the result of the determination and the second location update identifier. Referring to FIG. 4, this embodiment is used. A method of controlling location update is provided, specifically including -

401: The ISR function of the UE is activated, the attachment is completed in the E-UTRAN network, registered to the MSC1, and the second location update identifier is set, indicating that the UE moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode. No location updates are made.

402: When the UE moves from the E-UTRAN network to the GERAN/UTRAN network, determine whether the UE currently has a CS domain service or a paging blind zone where the UE is currently located in the PS domain, and if yes, execute 403; otherwise, execute 405.

The paging blind zone of the PS domain means that the area where the UE is located is only the CS domain, neither the PS domain nor the hybrid domain of the CS domain and the PS domain. Therefore, even if the MSC1 pages the UE in the two networks through the SGW, Paging is not available to the UE.

Generally, when the UE moves to a new area, the current network will send the area identifier of the area to the UE. If the area is a mixed area, the network side sends two area identifiers, and one is the identifier of the CS domain. The other is the identifier of the PS domain; if the area is the CS domain, the network side sends the identifier of the CS domain to the UE; if the area is the PS domain, the network side sends the identifier of the PS domain to the UE; The UE may determine the type of the current area from the area identifier sent by the network side. If only the identifier of the CS domain is received, the current area may be determined as the paging dead zone of the PS domain.

403: The UE performs location update in the GERAN/UTRAN network, and sets a third location update identifier, indicating that the location update is performed when the terminal returns to the E-UTRAN network.

404: When the UE returns to the E-UTRAN network, perform location update according to the third location update identifier, and set a fourth location update identifier, indicating that when the UE moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode, No location update, end.

405: At this time, the UE does not currently have the CS domain service, and the UE is not currently located in the paging dead zone of the PS domain.

The UE does not perform location update in the GERAN UTRAN network according to the second location update identifier, and ends.

The following is a specific description of the CS domain service after the UE moves from the E-UTRAN network to the GERAN/UTRAN network. Referring to Figure 5, the process is as follows:

501: The ISR function of the UE is activated, the attachment is completed in the E-UTRAN network, registered to the MSC1, and the second location update identifier is set, indicating that the UE moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode. When the time is up, no location update is performed.

502: The UE moves from the E-UTRAN network to the GERAN UTRAN network. According to the second location update identifier, the UE does not initiate the RAU or the LAU, and the UE is still bound to the MSC1. When the UE has the CS domain service, the calling service is included. And the called service, the UE initiates a location update process, and sets a third location update identifier, and performs a subsequent process, as follows:

Wherein, when the UE has a CS domain called service, the details are as follows:

1.1. The MSC1 receives the paging of the CS domain service, and notifies the SGW to page the UE. After receiving the notification, the SGW separately pages the UE in the two networks, and the paging in the GERAN/UTRAN network includes 1.2a~ 1.4a, the paging in the E-UTRAN network includes 1.2b~1.4b;

1.2a, the SGW notifies the SGSN to page the UE;

1.3a, the SGSN notifies the BSC RNC to page the UE;

1.4a, the BSC/RNC pages the UE on the GERAN UTRAN network;

1.2b, the SGW notifies the MME to page the UE;

1.3b, the MME notifies the eNB to page the UE;

1.4b, the eNB pages the UE in the E-UTRAN network;

2 to 9 or 9a, the UE starts to perform the CS domain called service, and initiates a location update process, where 2 to 9 are specifically the same as the 1 to 8 in the 302 step of the first embodiment (the first mode), 2, 3a, 4~7, 8a, 9a, which are the same as the l~8a (the second mode) in the 302 step of the embodiment 1, and are not described herein again.

When the UE has a CS domain calling service, the details are as follows:

2~9 or 9a, the UE starts to perform the CS domain calling service, and initiates a location update process, where 2~9 are specifically the same as the 1~8 in the 302 step of the first embodiment (the first way), 2, 3a, 4~7, 8a, 9a, specifically the same as the l~8a (the second mode) in the 302 step of the embodiment 1, and details are not described herein again.

When the UE performs the location update process in the process of performing the CS domain service in the GERAN UTRAN network, the third location update identifier is set to indicate that the location update procedure is required when the UE returns to the E-UTRAN network.

503: The UE moves from the GERAN/UTRAN to the E-UTRAN network, performs location update according to the third location update identifier, and sets a fourth location update identifier, indicating that the UE is in the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode. When moving between, no location update is performed. The process of performing the location update according to the third location update identifier is specifically 1 to 9, which is the same as 1 to 9 in the 303 of the first embodiment, and details are not described herein again.

In this embodiment, the manner of setting the location update identifier is the same as that in Embodiment 1, and details are not described herein again.

This embodiment is described by taking the CS domain service in the GERAN/UTRAN network as an example. The UE is associated with the MSC1, and the UE is located in the GERAN/UTRAN network. The MSC2 needs to provide services for the UE. Therefore, the location update needs to be initiated to re-associate the UE to the MSC2, and then the UE returns to the E-UTRAN network and associates again. After the MSC1 is connected, the location update identifier is set to indicate that the UE does not perform location update when moving between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode.

In another application scenario, when the UE is located in the E-UTRAN network, if the UE has the CS domain service, the MSC1 is associated with the UE and the MSC1 is also provided for the UE. Therefore, the location is not actively initiated. In the update procedure, the UE still updates the identity according to the second location, and does not perform location update if moving between the E-UTRAN network and the GERAN/UTRAN network in idle mode.

In this embodiment, by setting the second location update identifier, indicating that the location update is not performed when the terminal moves between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode, the mobility management of the CS domain of the UE is greatly simplified. The process saves the overhead of signaling. Further, the UE initiates a location update process to ensure that the CS domain service of the UE is not affected, and the UE is prevented from being affected by the CS-domain service in the GERAN/UTRAN network. The occurrence of business disruption has improved the quality of service. Example 3

This embodiment is different from the application scenario of Embodiment 1. In Embodiment 1, the UE activates the ISR function after moving from the E-UTRAN network to the GERAN/UTRAN network. In this embodiment, the UE moves from the GERAN UTRAN network to the E-UTRAN. After the network is activated, the ISR function is activated. Referring to FIG. 6, the embodiment provides a method for controlling location update, which specifically includes:

601: The UE completes attachment in the GERAN UTRAN network and registers with the MSC2.

602: When the UE moves from the GERAN/UTRAN network to the E-UTRAN network, first register to the E-UTRAN network and activate the ISR function, then perform location update completion to the registration of the MSC1, and set a first location update identifier, indicating that the UE is When the mobile device moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode, the location update is not performed, as follows: 1. The UE registers with the E-UTRAN network and activates the ISR function;

2 to 10, the process of performing location update LAU, which is the same as 1~9 in 303 of Embodiment 1, and is not described here again, and then sets a first location update identifier, indicating that the UE is in the E-UTRAN network in the subsequent idle mode. When moving between the GERAN/UTRAN network, no location update is performed.

In this embodiment, by setting a first location update identifier, indicating that the terminal is in an idle mode in the E-UTRAN network and When the GERAN/UTRAN network moves between locations, the location update is not performed, which greatly simplifies the mobility management process of the CS domain of the UE, and saves signaling overhead. Moreover, even if the UE has a CS domain service, the MSC1 can page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. Improve the quality of service. Example 4

Referring to FIG. 7, this embodiment provides a method for controlling location update, which specifically includes -

701: The UE moves from the E-UTRAN network to the GERAN/UTRAN network when performing the service, and activates the ISR function during the mobile process. In the present invention, the movement of the UE may be a movement in which the UE is in an idle state, or may be a movement when the UE performs a service.

702: The UE performs location update in the GERAN/UTRAN network, and sets a first location update identifier, indicating that the location update is performed when the UE returns to the E-UTRAN network, where the specific process includes: 1 to 8 or 1, 2a, 3 to 6, 7a, 8a, as shown in the figure, are the same as 1 to 8, and 1 to 8a in 302 of the first embodiment, and are not described herein again.

703: When the UE returns to the E-UTRAN network, perform location update according to the first location update identifier, and set a second location update identifier, indicating that when the UE moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode. The specific process includes: 1 to 9, as shown in the figure, which is the same as 1 to 9 in 303 of Embodiment 1, and details are not described herein again.

The difference between this embodiment and the embodiment 1 is that the UE in this embodiment performs ISR activation during the mobile process, and since the current UE has a service, the UE must perform location update in the GERAN/UTRAN network.

In this embodiment, when the UE has a service in the CS domain, the MSC1 may send a paging message to the IWF, and the IWF sends a paging message to the P-GW to perform a paging process in the PS domain, thereby establishing an IP channel of the UE to the IWF ( Z1), so the UE can receive the paging message of the MSC1 in the GERAN/UTRAN network or the E-UTRAN network, and the continuity of the CS domain service of the UE is guaranteed.

In this embodiment, when the UE moves from the E-UTRAN network to the GERAN/UTRAN network, the location update is performed in the GERAN/UTRAN network. When the UE returns to the E-UTRAN network, the location update is performed according to the first location update identifier. And setting a second location update identifier, by setting a second location update identifier, indicating that when the terminal moves in the subsequent idle mode between the E-UTRAN network and the GERAN UTRAN network, the location update is not performed, thereby greatly simplifying the CS of the UE. The mobility management process of the domain saves signaling overhead. Moreover, even if the UE has a CS domain service, the MSC1 can page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. Improve the quality of service. Example 5

Referring to FIG. 8, this embodiment provides a method for controlling location update, which specifically includes -

801: The UE moves from the GERAN/UTRAN network to the E-UTRAN network when the UE performs the service, and activates the ISR function. 802: The UE performs location update in the E-UTRAN network, and sets a first location update identifier, indicating that the UE is in subsequent idle mode. When moving between the E-UTRAN network and the GERAN/UTRAN network, no location update is performed, including:

1. The UE registers with the E-UTRAN network;

2 to 10, the process of performing location update LAU, which is the same as 1~9 in 303 of Embodiment 1, and is not described here again, and then sets a first location update identifier, indicating that the UE is in the E-UTRAN network in the subsequent idle mode. When moving between the GERAN UTRAN network and no location update.

The difference between this embodiment and the embodiment 3 is that the UE in this embodiment activates the ISR function during the mobile process, and since the current UE has a service, the UE must perform location update in the E-UTRAN network.

In this embodiment, when the UE has a CS domain service, the MSC1 sends a paging message to the IWF, and the IWF sends a paging message to

The P-GW performs the paging process of the PS domain, thereby establishing the IP channel (Z1) of the UE to the IWF, so the UE can receive the paging message of the MSC1 in the GERAN/UTRAN network or the E-UTRAN network, and the CS of the UE is guaranteed. Continuity of domain business.

In this embodiment, when the UE moves from the GERAN/UTRAN network to the E-UTRAN network, the first location update identifier is set to indicate that when the terminal moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode, The location update is not performed, which greatly simplifies the mobility management process of the CS domain of the UE, and saves signaling overhead. Moreover, even if the UE has a CS domain service, the MSC1 can page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. Improve the quality of service. Example 6

In this embodiment, based on the first embodiment or the third embodiment, a new application scenario is proposed. The location update identifier set by the UE is specifically indicating that the UE is in the E-UTRAN network in the subsequent idle mode. When moving between the CS domain and the second CS domain in the GERAN/UTRAN network, when the location update is not performed, the UE moves to the third CS domain in the GERAN/UTRAN network. For this, refer to FIG. Example provides a control position The updated method specifically includes:

901: When the UE moves from the first CS domain in the E-UTRAN network or the second CS domain in the GERAN/UTRAN network to the third CS domain in the GERAN/UTRAN network, perform location update, and set a third location update. And indicating, when the UE returns to the first CS domain in the E-UTRAN network, performing location update;

902: When the UE returns to the first CS domain in the E-UTRAN network, perform location update according to the third location update identifier, and set a fourth location update identifier, indicating that the UE is in the E-UTRAN network in the subsequent idle mode. When moving between the first CS domain and the third CS domain in the GERAN/UTRAN network, no location update is performed.

Among them, whether it is a GERAN UTRAN network or an E-UTRAN network, there are usually multiple CS domains, and each CS domain has its own unique identifier. For example, in this embodiment, the first CS domain in the E-UTRAN network is LA1, the second CS domain in the GERAN/UTRAN network is LA2, and the third CS domain is LA3, and the UE passes the embodiment 1 or 3. The method for setting the location update identifier to indicate that the UE does not perform location update when moving between LA1 and LA2 in the subsequent idle mode, and after setting the fourth location update identifier according to the method in this embodiment, indicating that the UE is idle subsequently When moving between LA1 and LA3 in mode, no location update is performed.

In this embodiment, the MSC1 is provided for the CS domain service in the first CS domain of the E-UTRAN network, and the MSC2 is provided to the UE in the second CS domain of the GERAN/UTRAN network. When the UE moves to the GERAN, After the third CS domain in the /UTRAN network, the MSC3 is provided for the CS domain service for the UE, and the MSC3 may be the MSC2 responsible for providing the CS domain service for the UE in the second CS domain.

In this embodiment, after the UE moves to the third CS domain in the GERAN UTRAN network, the location update is performed. When the UE returns to the first CS domain in the E-UTRAN network, the location update is performed according to the third location update identifier, and the location is set. The fourth location update identifier, by setting the fourth location update identifier, indicating that when the terminal moves between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode, the location update is not performed, which greatly simplifies the CS domain of the UE. The mobility management process saves signaling overhead. Moreover, even if the UE has a CS domain service, the MSC1 can page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. Improve the quality of service. Example 7

In this embodiment, based on the first embodiment or the third embodiment, a new application scenario is proposed. The location update identifier set by the UE is specifically indicating that the UE is in the E-UTRAN network in the subsequent idle mode. When the CS domain and the second CS domain in the GERAN/UTRAN network move, when the location update is not performed, the UE moves to the third CS domain in the E-UTRAN network. For this, refer to FIG. 10, this implementation Example provides a method for controlling location update, Body includes:

When the UE moves from the second CS domain in the GERAN UTRAN network or the first CS domain in the E-UTRAN network to the third CS domain in the E-UTRAN network, perform location update, and set a third location update identifier, indicating When the UE moves between the second CS domain in the GERAN/UTRAN network and the third CS domain in the E-UTRAN network in the subsequent idle mode of the UE, no location update is performed.

For example, in this embodiment, the first CS domain in the E-UTRAN network is LA1, the third CS domain is LA3, and the second CS domain in the GERAN/UTRAN network is LA2, and the UE passes the embodiment 1 or 3. The method for setting the location update identifier to indicate that the UE does not perform location update when moving between LA1 and LA2 in the subsequent idle mode, and after setting the third location update identifier according to the method in this embodiment, indicating that the UE is idle subsequently When moving between LA2 and LA3 in mode, no location update is performed.

In this embodiment, the MSC1 is provided for the CS domain service in the first CS domain of the E-UTRAN network, and the MSC2 is provided to the UE in the second CS domain of the GERAN/UTRAN network. After the third CS domain in the UTRAN network, the CS domain service is provided for the UE, which is the MSC3, which may be the MSC1 responsible for providing the CS domain service for the UE in the first CS domain.

In this embodiment, after the UE moves to the third CS domain in the E-UTRAN network, by setting the third location update identifier, indicating that when the terminal moves between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode, The location update greatly simplifies the mobility management process of the CS domain of the UE, and saves signaling overhead. Moreover, even if the UE has a CS domain service, the MSC3 can page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. Improve the quality of service. Example 8

Referring to FIG. 10, this embodiment provides a terminal, including:

The setting module 1001 is configured to perform location update in the first network where the terminal is currently located, and set a location update identifier. The control module 1002 is configured to: when the terminal moves from the first network to the second network, according to the location set by the setting module Update the identity to determine if a location update is in the second network.

The setting module 1001 specifically includes:

a first setting unit, configured to register and activate an ISR function when the terminal moves from the GERAN UTRAN network to the E-UTRAN network, and then perform a location update and set a first location update identifier, indicating that the terminal is in the E--after the idle mode When moving between the UTRAN network and the GERAN/UTRAN network, no location update is performed.

Alternatively, the setting module 1001 specifically includes: a first setting unit, configured to: when the terminal moves from the E-UTRAN network to the GERAN/UTRAN network, register and activate the ISR function, and perform location update and set a first location update identifier, indicating that when the terminal returns to the E-UTRAN network Perform location updates;

a second setting unit, configured to: when the terminal returns to the E-UTRAN network, perform location update according to the first location update identifier, and set a second location update identifier, indicating that the E-UTRAN network and the GERAN/ are in the subsequent idle mode of the terminal. When moving between UTRAN networks, no location update is performed.

The control module 1002 specifically includes:

a judging unit, configured to: when the terminal sets the second location update identifier, and then moves from the E-UTRAN network to the GERAN/UTRAN network, determine whether the terminal currently has a CS domain service or the paging blind zone currently located in the PS domain by the terminal;

a first processing unit, configured to: perform location update in the GERAN UTRAN network when the judgment unit determines that the result is yes, and set a third location update identifier, indicating that the location update is performed when the terminal returns to the E-UTRAN network, when the terminal When returning to the E-UTRAN network, the location update is performed according to the third location update identifier, and the fourth location update identifier is set to indicate that the location update is not performed when the terminal moves between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode. ;

And a second processing unit, configured to: when the result of the determining by the determining unit is negative, perform location update in the GERAN/UTRAN network according to the second location update identifier.

In addition, when the terminal moves from the E-UTRAN network to the GERAN UTRAN network, the setting module 1001 may specifically include: a first setting unit, configured to perform location update in the GERAN UTRAN network, and set the first location update identifier. , indicating that the location update is performed when the terminal returns to the E-UTRAN network;

a second setting unit, configured to: when the terminal returns to the E-UTRAN network, perform location update according to the first location update identifier, and set a second location update identifier, indicating that the terminal is in an idle mode in the E-UTRAN network and

When moving between GERAN/UTRAN networks, no location update is performed.

Alternatively, when the terminal moves from the GERAN/UTRAN network to the E-UTRAN network, the setting module 1001 specifically includes:

a first setting unit, configured to perform location update in the E-UTRAN network, and set a first location update identifier, indicating that the location update is not performed when moving between the E-UTRAN network and the GERAN UTRAN network in the subsequent idle mode of the terminal .

In this embodiment, the location update identifier set by the setting module 1001 may specifically indicate that the terminal is in the idle mode. When the mobile device moves between the first CS domain in the E-UTRAN network and the second CS domain in the GERAN/UTRAN network, the location update is not performed; correspondingly, the terminal further includes a new CS domain first setting module, which is used for When the terminal moves from the first CS domain in the E-UTRAN network or the second CS domain in the GERAN/UTRAN network to the third CS domain in the GERAN/UTRAN network, perform location update, and set a third location update identifier, Instructing to perform location update when the terminal returns to the first CS domain in the E-UTRAN network;

a new CS domain second setting module, configured to: when the terminal returns to the first CS domain in the E-UTRAN network, perform location update according to the third location update identifier, and set a fourth location update identifier, indicating that the terminal is in subsequent idle mode When the movement is performed between the first CS domain in the E-UTRAN network and the third CS domain in the GERAN/UTRAN network, no location update is performed. In this case, the MSC1 is provided for the CS domain service in the first CS domain of the E-UTRAN network, and the MSC2 is provided to the UE in the second CS domain of the GERAN/UTRAN network. When the UE moves to the GERAN, After the third CS domain in the /UTRAN network, the MSC3 is provided for the CS domain service for the UE, and the MSC3 may be the MSC2 responsible for providing the CS domain service for the UE in the second CS domain. When the UE subsequently has a CS domain service, the MSC1 can also page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. The quality of service.

In this embodiment, the location update identifier set by the setting module 1001 may specifically indicate that when the terminal moves in the subsequent idle mode, the first CS domain in the E-UTRAN network and the second CS domain in the GERAN/UTRAN network , no location update; correspondingly, the terminal further includes:

a new CS domain setting module, configured to perform location update when the terminal moves from a second CS domain in the GERAN UTRAN network or a first CS domain in the E-UTRAN network to a third CS domain in the E-UTRAN network, and A third location update identifier is set to indicate that location update is not performed when moving between the second CS domain within the GERAN/UTRAN network and the third CS domain within the E-UTRAN network in the subsequent idle mode of the terminal. In this case, the MSC 1 is provided for the CS domain service in the first CS domain of the E-UTRAN network, and the MSC 2 is provided to the UE in the second CS domain of the GERAN UTRAN network. After the third CS domain in the UTRAN network, the MSC3 is provided for the CS domain service for the UE, and the MSC3 may be the MSC1 responsible for providing the CS domain service for the UE in the first CS domain. When the UE subsequently has a service in the CS domain, the MSC3 can also page the UE in the two networks through the IWF, the P-GW, and the SGW, so that the CS domain service of the UE is not affected, and the service interruption is avoided. The quality of service.

In this embodiment, by setting a location update identifier, indicating that when the terminal moves between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode, the location update is not performed, which greatly simplifies the mobility management process of the CS domain of the UE. The signaling overhead is saved. The embodiment of the present invention can be implemented by using software, and the corresponding software program can be stored in a readable storage medium, for example, a hard disk or a cache of the terminal.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

Claim

A method for controlling location update, characterized in that, when a terminal moves between a GERAN UTRAN network and an E-UTRAN network, the method includes:

The terminal performs location update in the first network where the terminal is located, and sets a location update identifier, where the location update identifier is used to indicate whether the terminal needs to perform location update.

The method for controlling location update according to claim 1, wherein the terminal performs location update in the first network currently located, and the location update identifier specifically includes: the terminal moves from the GERAN/UTRAN network to the E- UTRAN network,

The terminal performs location update on the E-UTRAN network and sets a first location update identifier, indicating that location update is not performed when moving between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode of the terminal.

The method for controlling location update according to claim 1, wherein the terminal performs location update in the first network that is currently located, and sets a location update identifier, which specifically includes: the terminal moves from the E-UTRAN network to the GERAN. And UTRAN network, and the terminal performs location update on the GERAN UTRAN network and sets a first location update identifier, indicating that the location update is performed when the terminal returns to the E-UTRAN network;

And when the terminal returns to the E-UTRAN network, perform location update according to the first location update identifier, and set a second location update identifier, indicating that the E-UTRAN network is in the subsequent idle mode of the terminal. When moving between the GERAN/UTRAN network, no location update is performed.

The method for controlling location update according to claim 3, wherein when the terminal moves from the first network to the second network, determining whether the second is based on the location update identifier Performing location update in the network, specifically, including: when the terminal sets the second location update identifier, and then moves from the E-UTRAN network to the GERAN/UTRAN network, determining whether the terminal currently has a CS domain service or The terminal is currently located in a paging blind area of the PS domain; If yes, performing location update in the GERAN/UTRAN network, and setting a third location update identifier, indicating that location update is performed when the terminal returns to the E-UTRAN network, when the terminal returns to the E - in the UTRAN network, performing location update according to the third location update identifier, and setting a fourth location update identifier, indicating that when the terminal moves in the subsequent idle mode between the E-UTRAN network and the GERAN UTRAN network, No location update;

Otherwise, according to the second location update identifier, no location update is performed within the GERAN/UTRAN network.

The method for controlling location update according to claim 1, wherein the terminal performs location update in the first network that is currently located, and sets a location update identifier, which specifically includes: when the terminal performs service from the E-UTRAN network. Move to the GERAN UTRAN network;

The terminal performs location update in the GERAN/UTRAN network, and sets a first location update identifier, indicating that the location update is performed when the terminal returns to the E-UTRAN network;

The method for controlling location update according to claim 1, wherein the terminal performs location update in the first network that is currently located, and sets a location update identifier, which specifically includes: when the terminal performs service from the GERAN/UTRAN network. Move to the E-UTRAN network;

The terminal performs location update in the E-UTRAN network, and sets a first location update identifier, indicating that when the terminal moves in the subsequent idle mode between the E-UTRAN network and the GERAN UTRAN network, the terminal does not perform Location update.

The method for controlling location update according to claim 1, wherein the location update identifier is specifically indicating a first CS domain and a location in the E-UTRAN network in a subsequent idle mode of the terminal. GERAN/

When the second CS domain in the UTRAN network moves, the location update is not performed; the method further includes:

Position update when the terminal moves from the first CS domain in the E-UTRAN network or the second CS domain in the GERAN/UTRAN network to the third CS domain in the GERAN/UTRAN network And setting a third location update identifier, indicating that the location update is performed when the terminal returns to the first CS domain in the E-UTRAN network; when the terminal returns to the first CS domain in the E-UTRAN network Updating the logo according to the third location Row location update, and setting a fourth location update identifier, indicating that between the first CS domain in the E-UTRAN network and the third CS domain in the GERAN/UTRAN network in the subsequent idle mode of the terminal When moving, no location update is performed.

The method for controlling location update according to claim 1, wherein the location update identifier is specifically indicating a first CS domain and a location in the E-UTRAN network in a subsequent idle mode of the terminal. When the second CS domain in the GERAN/UTRAN network is moved, the location update is not performed; the method further includes:

Performing a location update when the terminal moves from a second CS domain within the GERAN UTRAN network or a first CS domain within the E-UTRAN network to a third CS domain within the E-UTRAN network, and Setting a third location update identifier, indicating that when the terminal is in a subsequent idle mode, moving between the second CS domain in the GERAN/UTRAN network and the third CS domain in the E-UTRAN network does not perform Location update.

The method according to any one of claims 1 to 8, wherein the method further comprises: when the terminal moves to the first network, registering and activating the ISR function.

A terminal, wherein the terminal comprises:

a setting module, configured to perform location update in a first network where the terminal is currently located, and set a location update identifier; and a control module, configured to: when the terminal moves from the first network to the second network, The location update identifier set by the setting module determines whether the location update is performed in the second network.

The terminal according to claim 10, wherein the setting module specifically includes:

a first setting unit, configured to: when the terminal moves from the GERAN/UTRAN network to the E-UTRAN network, register and activate the ISR function, perform location update, and set a first location update identifier, indicating that the terminal is in a subsequent idle mode. When the movement between the E-UTRAN network and the GERAN/UTRAN network is performed, no location update is performed.

a first setting unit, configured to register and activate an ISR function when the terminal moves from the E-UTRAN network to the GERAN UTRAN network, and perform location update and set a first location update identifier, indicating that when the terminal returns the Position update when E-UTRAN network;

a second setting unit, configured to: when the terminal returns to the E-UTRAN network, update the label according to the first location The location update is performed, and the second location update identifier is set to indicate that the location update is not performed when the terminal moves between the E-UTRAN network and the GERAN/UTRAN network in the subsequent idle mode.

The terminal according to claim 12, wherein the control module specifically includes:

a judging unit, configured to: when the terminal sets the second location update identifier, and then moves from the E-UTRAN network to the GERAN/UTRAN network, determine whether the terminal currently has a CS domain service or the current terminal a paging blind zone located in the PS domain;

a first processing unit, configured to: perform location update in the GERAN UTRAN network when the result of the determining by the determining unit is yes, and set a third location update identifier, indicating that when the terminal returns to the E-UTRAN Performing location update on the network, when the terminal returns to the E-UTRAN network, performing location update according to the third location update identifier, and setting a fourth location update identifier, indicating that the terminal is in the idle mode When the movement between the E-UTRAN network and the GERAN/UTRAN network is described, no location update is performed;

The terminal according to claim 10, wherein when the terminal performs a service, it moves from the E-UTRAN network to the GERAN/UTRAN network, and the setting module specifically includes:

a first setting unit, configured to perform location update in the GERAN UTRAN network, and set a first location update identifier, to indicate that a location update is performed when the terminal returns to the E-UTRAN network;

a second setting unit, configured to: when the terminal returns to the E-UTRAN network, perform location update according to the first location update identifier, and set a second location update identifier, indicating that when the terminal is in a subsequent idle mode When moving between the E-UTRAN network and the GERAN/UTRAN network, no location update is performed.

The terminal according to claim 10, wherein when the terminal performs a service, the UE moves from the GERAN UTRAN network to the E-UTRAN network, and the setting module specifically includes:

a first setting unit, configured to perform location update in the E-UTRAN network, and set a first location update identifier, indicating to move between the E-UTRAN network and the GERAN UTRAN network in a subsequent idle mode of the terminal When the location is not updated.

The terminal according to claim 10, wherein the location update identifier set by the setting module Specifically, the location update is not performed when the first CS domain in the E-UTRAN network and the second CS domain in the GERAN/UTRAN network are moved in the subsequent idle mode of the terminal; The terminal also includes:

a new CS domain first setting module, configured to: when the terminal moves from a first CS domain in the E-UTRAN network or a second CS domain in the GERAN/UTRAN network to the GERAN/UTRAN network In the third CS domain, performing location update, and setting a third location update identifier, indicating that the location update is performed when the terminal returns to the first CS domain in the E-UTRAN network;

a new CS domain second setting module, configured to: when the terminal returns to the first CS domain in the E-UTRAN network, perform location update according to the third location update identifier, and set a fourth location update identifier, It is indicated that when the terminal moves in the subsequent idle mode between the first CS domain in the E-UTRAN network and the third CS domain in the GERAN/UTRAN network, location update is not performed.

The terminal according to claim 10, wherein the location update identifier set by the setting module is specifically indicating a first CS domain in the E-UTRAN network in a subsequent idle mode of the terminal. And performing location update when moving between the second CS domain in the GERAN/UTRAN network; the terminal further includes:

a new CS domain setting module, configured to: when the terminal is from the second CS domain in the GERAN UTRAN network or

When the first CS domain in the E-UTRAN network moves to the third CS domain in the E-UTRAN network, perform location update, and set a third location update identifier, indicating that the terminal is in the idle mode after the When moving between the second CS domain in the GERAN/UTRAN network and the third CS domain in the E-UTRAN network, no location update is performed.