WO2007124687A1

WO2007124687A1 - A method for carrying out location registration updating

Info

Publication number: WO2007124687A1
Application number: PCT/CN2007/001384
Authority: WO
Inventors: Ying Tan; Zhiming Li
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-04-25
Filing date: 2007-04-25
Publication date: 2007-11-08
Also published as: CN101064928A; CN101064928B

Abstract

A method for carrying out location registration updating, in high rate packet data (HRPD) network comprises: when the subnet of the HRPD network that the terminal corresponds to has a change, the terminal reports its current location information to the mobile switching center (MSC) through the access network (200). MSC updates the registration location information of the MS/AT in MSC by using the received location information of the MS/AT (201). The method of the present invention ensures that MS/AT can accurately receive the packet called even if the subnet of the HRPD network switching is taken place during the course of the MS/AT moving, also ensures the call arriving accurately, thereby MSC carries out ambulant management of the MS/AT in HRPD network.

Description

A method for implementing location registration update

Technical field

The present invention relates to mobility management techniques, and more particularly to a method for implementing location registration updates in a High Speed Packet Data (HRPD) network. Background of the invention

The Code Division Multiple Access (CDMA2000) standard series includes four standard phases of IS95, CDMA2000 lx, HRPD, and lx Evolution Standard (IxEV-DV). The HRPD network is a pure packet data network and is not used to transmit voice signals in the circuit domain. Therefore, in practical applications, the HRPD network is used in conjunction with the CDMA2000 lx network, wherein the CDMA2000 lx network is simply referred to as the lx network, and the HRPD network is utilized. The feature of transmitting high-speed packet data services, as a complement to CDMA2000 lx data services, can provide users with better voice and data services.

In the case of lx and HRPD networks, there are four modes of mobile station/access terminal (MS/AT): IS95 terminal, lx terminal, lx/HRPD dual mode terminal, and HRPD terminal. The MS/AT referred to in this document is the lx/HRPD dual-mode terminal of the lx/HRPD standard.

Currently, the standard defines the Al/Alp interface between the Mobile Switching Center (MSC) and the HRPD network. The MSC performs mobility management on the lx network and the HRPD network through the A1/A1 _P interface. However, only the existing standards define After the location update is performed on the lx network, the MS/AT registers the update method on the MSC, and does not provide a method for the location registration update on the MSC after the MS/AT has updated the location on the HRPD network.

1 is a flow chart of location registration update of a location update of a prior art terminal on an lx network. As shown in FIG. 1, it is assumed that the MS/AT resides in the HRPD network, and the MS/AT moves. In the process, if the MS/AT is found to have moved out of the current location area of the lx network, the location update registration needs to be initiated on the lx network, including the following steps:

Step 100: The MS/AT sends a Route Update message to the HRPD access network (AN) to request a route update.

Step 101: The HRPD AN returns a Registration Order message to the MS/AT, and allows the MS/AT to send a registration update message.

Step 102: The MS/AT sends a registration message (Registration Message) to the HRPD AN. Step 103: The HRPD AN sends a Location Updating Request message to the target MSC to perform an MSC registration update, and the target MSC starts a timer T _32] o.

Step 104a: If the registration update is successful, the target MSC returns a Location Updating Accept message to the HRPD AN, and the target MSC stops the timer T ₃₂₁₀ .

Step 104b: If the timer T _{321Q times} out, the registration update fails, and the target MSC returns a Location Updating Reject message to the HRPD AN.

Step 105: If the registration is successful, the HRPD AN sends a Registration Accepted Order message to the MS/AT.

As shown in FIG. 1 , a method for registering and updating a location area of an lx network through an HRPD network is provided in the standard. The existing scheme only defines a method for a terminal to reside on an HRPD network to register and update an lx location area. In the standard, there is no way for the MS/AT to register the HRPD network in the MSC.

In this way, in the MS/AT mobile process, if the HRPD network subnet switching occurs, the changed location (subnet) information cannot be updated on the MSC in time, and the packet cannot be correctly received. In addition, when the MS/AT needs to forward lx network voice paging on the HRPD network, the paging cannot be reached. Summary of the invention

In view of this, an embodiment of the present invention aims to provide a method for implementing location registration update, which can implement MSC mobility management of MS/AT in an HRPD network.

To achieve the above objective, the technical solution of the embodiment of the present invention is specifically implemented as follows: A method for implementing location registration update, when the HRPD network subnet corresponding to the terminal changes, the method includes:

The terminal reports its current location information to the mobile switching center through the access network, and the mobile switching center updates the registered location information of the terminal by using the received location information.

It can be seen from the foregoing technical solutions that the method in the embodiment of the present invention is: being in the HRPD network or

The MS/AT in the CDMA2000 lx network, when the corresponding HRPD network subnet changes, reports its current location information to the MSC through the access network, such as the HRPD access network identifier (AMD), and the MSC uses the received location information. Update the registration location information of the MS/AT in the MSC. The method of the invention ensures that in the MS/AT mobile process, even if the HRPD network subnet change occurs, the MS/AT can correctly answer the packet being called, and also ensures the correct arrival of the paging, thereby realizing the MSC to the HRPD network. MS/AT mobility management. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a flow chart of location registration update of a location update of a prior art terminal on an lx network;

2 is a flow chart of location registration update of a location update of a terminal of the present invention;

Figure 3 is a flow chart of Embodiment 1 of the present invention;

4 is a flow chart of Embodiment 2 of the present invention. Mode for carrying out the invention

In the embodiment of the present invention, when the HRPD network subnet corresponding to the terminal changes, the terminal ends. The terminal reports its current location information to the mobile switching center through the access network, and the mobile switching center updates the registered location information of the terminal by using the received location information.

The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

2 is a flowchart of a location registration update caused by a change of a HRPD network subnet on a HRPD network or an lx network according to the terminal of the present invention. As shown in FIG. 2, the method includes the following steps:

Step 200: When the HRPD network subnet corresponding to the terminal changes, the terminal reports its current location information to the mobile switching center through the access network.

Currently, if the MS/AT is in the HRPD network, when the MS/AT is in the process of moving, the subnet of the HRPD network changes. If an inter-subnet handover occurs, the MS/AT will initiate the allocation management access terminal identifier. Requesting a (UATI Request) message to the AN to update the session information, the AN will allocate a new UATI to the terminal, and send the current network subnet information and the newly assigned UATI to the terminal; if the MS/AT is in the lx network When the MS/AT is in the process of moving, the subnet of the HRPD network changes. If an inter-subnet switch occurs, the MS/AT sends a Route Update message to the lx BSS to request the route update, and after obtaining the permission of the lx BSS. The terminal performs registration update. The present invention further includes: The access network reports the current location information of the terminal, such as the HRPD access network identifier, to the mobile switching center.

For a specific implementation of this step, please refer to the description of the embodiment shown in FIG. 3 and FIG. 4 below. The terminal is in an HRPD network or an lx network.

Step 201: The mobile switching center updates the registered location information of the terminal by using the received location information.

The MSC updates the registered location information of the MS/AT in the MSC by receiving the location information from the AN, such as the ANID of the HRPD. In this way, it is guaranteed that in the MS/AT mobile process, even if the HRPD network subnet switching occurs, the MS/AT can correctly answer the packet being called, and also guarantees The correct arrival of the paging is verified, thereby realizing the MSC's mobility management of the MS/AT in the HRPD network.

3 is a flowchart of Embodiment 1 of the present invention. As shown in FIG. 3, when the HRPD network subnet corresponding to the MS/AT in the HRPD network changes, the MS/AT reports its current location to the MSC through the HRPD AN. The flow of information includes the following steps:

Step 300 to Step 301: The MS/AT sends a UATI Request message to the HRPD AN, and the HRPD AN allocates a new UATI to the MS/AT, and carries the UATI Assignment message to the MS/AT.

Step 302: The HRPD AN sends a Location Updating Request message to the MSC, so as to implement new registration of the MS/AT in the MSC, and the MSC starts the timer T ₃₂₁₀ . Add an HRPD ANID field to the existing Location Updating Request message to carry the ANID, as shown in Table 1:

Table 1

It should be noted that, in order for the MSC to obtain the ANID of the HRPD AN where the MS/AT is currently located, it may be reported to the MSC in the Location Updating Request message as shown in Table 1. The network configuration may also be performed according to the networking situation. For example, in the MSC, the corresponding relationship between the HRPD AN and the respective ANIDs of the self-connection is pre-configured. When the MSC receives the Location Updating Request message from the HRPD AN, the MS/AT is originally carried in the Location Updating Request message. The user identifier, such as the IMSI, can know the ANID of the HRPD AN corresponding to the MS/AT.

Step 303a: If the location registration update is successful, the MSC returns a Location Updating Accept message to the HRPD AN, and stops the timer T ₃₂₁₀ . Step 303b: If the timer _{ΰ ΰ ΰ times} out, the location registration update fails, and the MSC returns a Location Updating Rej ect message to the HRPD AN.

It should be noted that step 303a and step 303b may be omitted.

Step 304: The HRPD AN sends a Registration Accept Order message to the MS/AT to notify the MS/AT that the location registration on the MSC is successful.

Step 305: The MS/AT returns a UATI Complete message to the HRPD AN. It should be noted that this step only needs to be performed after step 301.

4 is a flowchart of Embodiment 2 of the present invention. As shown in FIG. 4, when an MS/AT in an lx network changes during a mobile process, when a subnet corresponding to the HRPD network changes, the base station in the network is accessed through the lx. The process for the system (BSS) to report its current location information to the MSC includes the following steps:

Step 400: The MS/AT sends a Route Update message to the lx BSS to request a route update. Step 401: The lx BSS returns a Registration Order message to the MS/AT, allowing the MS/AT to send a registration update message.

Step 402: The MS/AT sends a Registration Message ₀ to the lx BSS.

In this step, the Registration Message is the ANID field corresponding to the HRPD in the existing Registration Message, and is used to carry the ANID. The ANID field is shown in Table 1, and will not be described in detail here.

Step 403: The lx BSS sends a Location Updating Request message to the MSC, so that the MS/AT is newly registered in the MSC, and the MSC starts the timer 3210.

In this step, the Location Updating Request message is an extended message to the existing message, that is, the ANID field corresponding to the HRPD is added to the existing Location Updating Request message, as shown in Table 1, and is not described in detail here.

Similarly, it should be noted that in order for the MSC to obtain the HRPD AN where the MS/AT is currently located. The ANID can be reported to the MSC by carrying the message in the Location Updating Request message as shown in Table 1. The configuration of the HRPD AN connected to the MSC can also be configured through a pre-network configuration, such as when the MSC receives a certain After the location update request message of the HRPD AN, the AMD of the HRPD AN corresponding to the MS/AT can be obtained because the user identifier of the MS/AT, such as the IMSI, originally carried in the Location Updating Request message.

Step 404a: if the location registration update is successful, MSC returns Location Updating Accept message to lx BSS, and stops the timer T ₃₂ j _0.

Step 404b: If the timer T ₃₂₁ . After the timeout, the location registration update fails, and the MSC returns a Location Updating Rej ect message to the lx BSS.

It should be noted that step 404a and step 404b may be omitted.

Step 405: The lx BSS sends a Registration Accepted Order message to the MS/AT. It should be noted that, in the above embodiment, in order to update the HRPD location information in the MSC, the location update message, the Location Updating Request message, and the Location Updating Accept message may be replaced by an existing event notification message. The Event Notification Message is transmitted by the HRPD AN to the MSC through the Al/Alp interface or transmitted by the MSC to the HRPD AN through the Al/Alp interface, and the ANID field is added to the Event Notification Message.

Event Notification Message definition: 3⁄4 port table 2:

Table 2

The Message Type, IMSI, and Event fields are all in the existing Event Notification Message, and the existing Event Notification Message is sent to the MSC. AN, in the present invention, the direction of transmission of the Event Notification Message from the AN to the MSC is increased.

In addition, for the purpose of the present invention, a new message can also be defined to report the current location information of the MS/AT from the HRPD A to the MSC, and the response message returned by the MSC to the HRPD AN.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included. It is within the scope of the invention.

Claims

Claim

A method for implementing a location registration update, wherein when the HRPD network subnet corresponding to the terminal changes, the method includes:

The method according to claim 1, wherein the method for reporting current location information is:

Al. After the access network AN in the HRPD network receives the assignment management terminal identifier UATI request from the terminal, the HRPD AN sends a location update request message to the mobile switching center.

A21. After the access network AN in the HRPD network receives the assignment management terminal identifier UATI request from the terminal, the HRPD AN sends an event notification message to the mobile switching center.

After receiving the registration message from the terminal, the base station subsystem BSS in the access network of the CDMA2000 lx network carries the access network identifier ANID of the terminal in the registration message in the location update request message and sends the message to the mobile station. Exchange center.

B2. After receiving the registration message from the terminal, the base station subsystem BSS in the access network of the CDMA2000 lx network carries the ANID of the terminal in the registration message. The notification message is sent to the mobile switching center.

The method according to any one of claims 2 to 5, characterized in that, after the mobile switching center receives the reported current location information, the timer T _{321 is} started. .

The method according to claim 2 or 4, wherein the location update request message includes an ANID field for carrying an HRPD access network identifier.

8. The method according to claim 6, wherein the method further comprises: if the location registration update is successful, the mobile switching center returns a location update accept message to the access network, and stops the timer _{321 321} ο;

If the timer T _{321G times} out and the location registration update fails, the mobile switching center returns a location update reject message to the access network.

The method according to claim 8, wherein the location update accept message/location update reject message is an event notification from the MSC to the access network, and the event notification message includes The ANID field of the HRPD access network identifier.

The method according to claim 3 or 5, wherein the event notification message includes an ANID field for carrying an HRPD access network identifier, and the method for transmitting the event notification message is from an access network to MSC:.

The method according to claim 2, wherein a correspondence between the self-connected HRPD AN and the respective ANIDs is pre-configured in the mobile switching center;

After receiving the location update request message, the mobile switching center obtains the ANID corresponding to the terminal according to the user identifier of the terminal and the corresponding relationship carried in the location update request message.

12. The method of claim 1 wherein the terminal is in an HRPD network or an lx network.

The method according to claim 11, wherein the terminal is an lx/HRPD dual mode terminal.