CN100421503C - Method and system for dual-mode terminal location registration - Google Patents

Abstract

The invention discloses a method and system for dual-mode terminal location registration. The solution includes: MSC/VLR in the first network is connected to a mobility management unit in the second network, and the dual-mode terminal performs location registration in the second network. After location registration, the mobility management unit in the second network notifies the MSC/VLR in the first network of the location information of the dual-mode terminal in the second network; the MSC/VLR in the first network records the relationship between the dual-mode terminal and the second Correspondence between mobility management units in the network or location information of the dual-mode terminal in the second network. According to the solution proposed by the present invention, the MSC/VLR of the first network records the location information of the dual-mode terminal in the second network, and when other terminals initiate a voice call to the dual-mode terminal, the MSC/VLR can The mobility management unit notifies the dual-mode terminal so that the dual-mode terminal can choose whether to answer the voice call, so that the dual-mode terminal no longer needs to listen to the paging message in the first network.

Description

Method and system for dual-mode terminal location registration

technical field

The present invention relates to dual-mode technology, in particular to a method and system for dual-mode terminals to perform position registration.

Background technique

Code Division Multiple Access (CDMA) 1x technology and High Speed Packet Data (HRPD) technology have been widely used in many countries in the world. HRPD technology is a technology for wireless data services and belongs to different technical standards from CDMA1x.

Fig. 1 has shown the networking schematic diagram of CDMA1x technology and HRPD technology in the prior art, as shown in Fig. The terminal in the HRPD network for networking is an access terminal (AT, Access Terminal). CDMA1x can provide language service and low-speed data service to MS, and HRPD network can provide high-speed data service to AT. The HRPD network can use an independent packet data service node (PDSN, Packet Data Serving Node) to access the Internet (Internet), or share the PDSN with CDMA1x to access the Internet. If the HRPD network and the CDMA1x network belong to different operators, the HRPD network and the CDMA1x network use their respective PDSNs to access the Internet; if the HRD network and the CDMA1x network belong to the same operator, the HRPD network and the CDMA1x network can use their respective PDSNs Access to the Internet, or share the same PDSN to access the Internet to reduce network operating costs.

The operator usually expands the HRPD network on the already constructed CDMA1x network so as to be able to provide high-speed data services to the users. At this time, the operator operates the CDMA1x and HRPD networks at the same time. The MS/AT in Figure 1 is a dual-mode terminal that can access both the CDMA1x network and the HRPD network. With the gradual construction and improvement of the HRPD network, more and more users will use the MS/AT.

In the technical standards formulated by the Third Generation Partnership Project 2 (3GPP2, Third Generation Partnership Project2), there is no interface between the HRPD network and the CDMA1x network. Only in the actual network construction, the HRPD network and the CDMA1x network can share the PDSN. The shared PDSN is only used as a gateway device for terminals in the HRPD network and CDMA1x network to access the Internet. It is mainly used to carry packet data and collect billing information. For the dual-mode terminal MS/AT, if the dual-mode terminal resides in the HRPD network for high-speed data services, it should be able to receive voice calls from the CDMA1x network.

After the MS/AT resides in the HRPD network, there are three packet data service states, including empty state, dormant state and active state. In the empty state, the MS/AT can register its location in the HRPD network and the CDMA1x network, and only listen to system messages and paging messages from the HRPD network or the CDMA1x network; the dormant state means that the MS/AT maintains communication with the HRPD network Connected, but no data transmission and no air interface resources are used. At this time, the MS/AT can listen to system messages and paging messages from the CDMA1x network; the active state refers to when the MS/AT performs high-speed packet data services in the HRPD network status.

Since the MS/AT should be able to receive voice calls from the CDMA1x network when it resides in the HRPD network for high-speed data services, therefore, when the MS/AT resides in the HRPD network and is active, each paging cycle needs to be switched Go to the CDMA1x network to receive the paging message from the CDMA1x network, and determine whether there is its paging message, which will seriously affect or even interrupt the real-time high-speed packet data service carried out by the MS/AT in the HRPD network, such as the voice service over IP ( VoIP), video (Video) services, etc. Moreover, since the MS/AT is in an active state in the HRPD network, it cannot register its location in the CDMA1x network. If the location of the MS/AT changes, it cannot register its current location to the CDMA1x network, making it impossible for the MS/AT to receive Paging message from CDMA1x network.

Contents of the invention

In view of this, the purpose of the present invention is to provide a method for dual-mode terminal location registration, so that the first network can record the location information of the dual-mode terminal in the second network, and further enable the first network to register the dual-mode terminal The initiated voice call is notified to the dual-mode terminal. The invention also provides a system for the dual-mode terminal to perform location registration.

In order to achieve the above object, the present invention provides a method for a dual-mode terminal to register a location. The MSC/VLR in the first network is connected to the mobility management unit in the second network. The method includes the following steps:

A. After the dual-mode terminal performs location registration in the second network, the mobility management unit in the second network notifies the MSC/VLR in the first network of the location information of the dual-mode terminal in the second network;

B. The MSC/VLR in the first network records the correspondence between the dual-mode terminal and the mobility management unit in the second network or the location information of the dual-mode terminal in the second network.

The second network is different from the first network.

Wherein, the first network is a CDMA1x network, and the second network is a high-speed packet data HRPD network,

The base station application protocol BSAP is used between the MSC/VLR in the CDMA1x network and the mobility management unit in the HRPD network to assign address information as a signaling node to the mobility management unit, and configure the mobility management unit in the MSC/VLR Address information,

Said step A includes: after the dual-mode terminal performs position registration in the HRPD network, the mobility management unit in the HRPD network sends a position update request to the MSC/VLR in the CDMA1x network, and the position update request carries the dual-mode terminal identification ;

Said step B includes: after the MSC/VLR in the CDMA1x network receives the location update request, according to the stored mobility management unit address information, determine the mobility management unit as the signaling source node, and the MSC/VLR records the dual-mode terminal and Correspondence between mobility management units in the HRPD network.

The location update request further carries: a location registration type, or a network indication parameter of the current network, or a combination of the above two.

The location registration type is a preset fixed value.

Wherein, the first network is a CDMA1x network, the second network is an HRPD network, and the MSC/VLR in the CDMA1x network is connected to the mobility management unit in the HRPD network through a self-defined interface,

The step A is: after the dual-mode terminal performs position registration in the HRPD network, the mobility management unit in the HRPD network sends a position update request to the MSC/VLR in the CDMA1x network, and the position update request carries the dual-mode terminal identification and the mobility snap-in ID.

The location update request further carries: system identification, network identification and grouping area identification.

After the step B, it further includes: after the first network receives the voice call initiated by the dual-mode terminal, the MSC/VLR in the first network according to the recorded communication between the dual-mode terminal and the mobility management unit in the second network The corresponding relationship determines the mobility management unit where the dual-mode terminal is currently located, and notifies the dual-mode terminal of a new voice call through the mobility management unit.

In step B, if the MSC/VLR records the correspondence between the dual-mode terminal and the mobility management unit for the first time, then the MSC/VLR performs location registration in the HLR, and registers the identification of the MSC/VLR into the HLR .

The present invention also provides a system for dual-mode terminal location registration, the system includes: HLR, MSC/VLR, base station controller BSC/packet control function PCF, packet data service node PDSN, BTS, MSC in the first network /VLR is connected with HLR and BSC/PCF respectively, BSC/PCF is connected with BTS, BSC/PCF is connected with PDSN, the mobility management unit in the second network is characterized in that MSC/VLR is connected with mobility management unit; After the dual-mode terminal registers its location in the second network, the mobility management unit transmits the location information of the dual-mode terminal in the second network to the MSC/VLR.

The second network is different from the first network.

Wherein, the first network is a CDMA1x network, and the second network is an HRPD network. If the HRPD network is Phase1 defined by 3GPP2, then the MSC/VLR is connected to the AN where the mobility management unit is located; if the HRPD network is 3GPP2 Defined Phase2, the MSC/VLR is connected to the PCF where the mobility management unit is located.

According to the solution proposed by the present invention, after the dual-mode terminal performs position registration in the second network, the mobility management unit in the second network notifies the MSC/VLR in the first network of the position of the dual-mode terminal in the second network Information, so that the MSC/VLR of the first network records the location information of the dual-mode terminal in the second network. In this way, when other terminals initiate a voice call to the dual-mode terminal, the MSC/VLR can notify the dual-mode terminal through the mobility management unit in the second network, so that the dual-mode terminal can choose whether to answer the voice call, so that the dual-mode terminal does not have to Then, the paging message in the first network is intercepted, so as to avoid adverse effects on real-time services performed by the dual-mode terminal when the dual-mode terminal is in an active state in the second network.

Description of drawings

Fig. 1 shows the networking diagram of CDMA1x technology and HRPD technology in the prior art;

Fig. 2 shows the schematic diagram of networking of CDMA1x technology and HRPD technology among the present invention;

Fig. 3 shows a schematic diagram of MS/AT registration in a CDMA1x network.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

In the present invention, after the dual-mode terminal performs location registration in the second network, the mobility management unit in the second network notifies the MSC/VLR in the first network of the location information of the dual-mode terminal in the second network, so that The MSC/VLR of the first network records the location information of the dual-mode terminal in the second network. In this way, when other terminals initiate a voice call to the dual-mode terminal, the MSC/VLR in the first network can notify the dual-mode terminal through the mobility management unit in the second network, so that the dual-mode terminal can choose whether to answer the voice call , so that the dual-mode terminal no longer needs to listen to the paging message in the first network. The first network may be a Global Mobile Communications (GSM) network, or a CDMA2000 network, or a Wideband Code Division Multiple Access (WCDMA) network, or a General Packet Radio Service (GPRS) network; the second network is a GSM network, Either it is a CDMA2000 network, or it is a WCDMA network, or it is a GPRS network and the second network is different from the first network. Since the structure of each network includes MSC/VLR or mobility management unit, the implementation process of the present invention will be described in detail below only taking the first network as a CDMA1x network and the second network as an HRPD network as an example.

Fig. 2 has shown the networking schematic diagram of CDMA1x technology and HRPD technology among the present invention, as shown in Fig. 2, MSC/VLR (Visitor Location Register, visitor location register) in CDMA1x network links to each other with the mobility management unit in HRPD network , if the HRPD network is the HRPD network structure phase 1 (phase1) defined in the 3GPP2 standard, then the mobility management unit is located in the access network (AN, Access Network), if the HRPD network is the HRPD network structure phase 2 defined in the 3GPP2 standard ( phase2), the mobility management unit is located in the packet control function module (PCF, Packet Control Function). Therefore, if the HRPD network is a phase1 structure defined in the 3GPP2 standard, the MSC/VLR is connected to the AN; if the HRPD network is a phase2 structure defined in the 3GPP2 standard, the MSC/VLR is connected to the PCF. The existing interface protocol between the MSC/VLR and the mobility management unit can be followed, and the A1 interface protocol between the BSC and MSC/VLR in the CDMA1x network can be adopted, such as the BSAP protocol; the existing interface process can also be simplified according to actual needs , such as a subset of the A1 interface protocol; the interface protocol can also be redefined, such as the protocol stack based on IP transmission. The correspondence between the MSC/VLR and the mobility management unit may be one-to-one, or one-to-many or many-to-one.

In the present invention, after the MS/AT performs position registration in the HRPD network, the mobility management unit in the HRPD network notifies the MSC/VLR in the CDMA1x network of the position information of the MS/AT in the HRPD network, so that the MSC in the CDMA1x network /VLR records the location information of MS/AT in HRPD network. In this way, when other terminals initiate a voice call to the MS/AT, the MSC/VLR in the CDMA1x network can notify the MS/AT through the mobility management unit in the HRPD network, so that the MS/AT can choose whether to answer the voice call, thereby The MS/AT needn't listen to the paging message in the CDMA1x network.

Fig. 3 shows the schematic diagram of MS/AT location registration in CDMA1x network, as shown in Fig. 3, the realization process that MS/AT carries out location registration in CDMA1x network includes the following steps:

Steps 301 to 303: After the MS/AT and the mobility management unit perform location registration in the HRPD network, the mobility management unit sends a location update request to the MSC/VLR, and the location update request carries the identity of the MS/AT and the The location information of the MS/AT in the HRPD network, such as the identifier of the mobility management unit where the MS/AT is currently located. After receiving the location update request, the MSC/VLR records the corresponding relationship between the MS/AT and the mobility management unit. The MSC/VLR may return a location update response to the mobility management unit, informing the mobility management unit that it has received the reported location information of the MS/AT in the HRPD network.

When other terminals initiate a voice call to the MS/AT, the MSC/VLR in the CDMA1x network can notify the MS/AT through the mobility management unit corresponding to the MS/AT according to the recorded correspondence between the MS/AT and the mobility management unit. MS/AT, the MS/AT chooses whether to answer the voice call, so that no matter what state the MS/AT is in the HRPD network, it is no longer necessary to listen to the paging message from the CDMA1x network, which simplifies the operation of the MS/AT .

Taking the AN as the mobility management unit and the connection between the MSC/VLR and the AN through the A1 interface as an example, the implementation process of the present invention will be described in more detail below.

To assign address information for AN as a signaling node, not only configure the address information of the base station controller (BSC, Base Station Controller) under its jurisdiction in MSC/VLR, but also configure the address information of the AN under its jurisdiction in MSC/VLR , the MSC/VLR can distinguish the BSC or AN corresponding to the address information according to the address information.

Corresponding to the process of MS/AT in Figure 3 performing location registration in the CDMA1x network, the specific implementation process and signaling format are as follows:

Steps 301 to 303: After MS/AT and AN perform location registration in the HRPD network, AN sends a Location Updating Request (Location Updating Request) to MSC/VLR, and the Location Updating Request carries the identity of MS/AT, such as international mobile User identity (IMSI, International Mobile Subscriber Identity). After the MSC/VLR receives the Location Updating Request, it determines which AN the Location Updating Request comes from according to the stored AN address information, and then records the correspondence between the MS/AT and the AN, such as between the AN address information and the IMSI of the MS/AT corresponding relationship. Since the Location Updating Request also carries the location registration type, in order to achieve compatibility with the existing A1 interface, the location registration type carried in the Location Updating Request can be set to a fixed value, such as 02H-Zone Based. The Location Updating Request may also carry a network indication parameter, which is used to inform the MSC/VLR whether the current network of the corresponding MS/AT is an HRPD network or a CDMA1x network. The MSC/VLR can return a Location Updating Accept to the AN, informing the AN that it has received the reported location information of the MS/AT in the HRPD network.

When other terminals initiate a voice call to the MS/AT, the MSC/VLR in the CDMA1x network can notify the MS/AT through the AN corresponding to the MS/AT according to the recorded correspondence between the MS/AT and the AN, and the MS /AT Select whether to answer the voice call.

If the MSC/VLR is connected to the AN through a newly defined interface, such as a protocol stack based on IP transmission, then the application layer protocol between the AN and the MSC/VLR may not adopt the interoperability specification (IOS, Interoperability Specification) defined by 3GPP2, but Customize the simple interaction process. The location registration request reported by AN to MSC/VLR can directly carry MS/AT ID, AN ID, System Identification (SID, System Identification), Network Identification (Network Identification) and Packet_Zone_ID ).

If the MSC/VLR is connected to the PCF, when other terminals initiate a voice call to the MS/AT, the MSC/VLR in the CDMA1x network can pass the corresponding The PCF notifies the MS/AT, and the MS/AT chooses whether to answer the voice call. The AN where the MS/AT is currently located is recorded in the PCF, and the notification from the MSC/VLR can be delivered to the MS/AT through the corresponding AN.

In addition, if the MS/AT performs location registration in the MSC/VLR for the first time through the mobility management unit, that is, the relevant data of the MS/AT has not been recorded in the MSC/VLR, then the MSC/VLR will perform the home location register (HLR , Home Location Register) location registration, that is, notify the HLR of the identification of the MSC/VLR where the corresponding MS/AT is currently located, and the HLR stores the corresponding relationship between the MS/AT and its current MSC/VLR. In this way, when the MS/AT moves to a mobility management unit managed by a new MSC/VLR, voice calls initiated by other terminals to the MS/AT can be accurately routed to the MSC/VLR where the MS/AT is currently located.

In a word, the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (12)

1. A method for dual-mode terminal to perform location registration, characterized in that the MSC/VLR in the first network is connected with the mobility management unit in the second network, and the method comprises the following steps: A. After the dual-mode terminal performs location registration in the second network, the mobility management unit in the second network notifies the MSC/VLR in the first network of the location information of the dual-mode terminal in the second network; B. The MSC/VLR in the first network records the correspondence between the dual-mode terminal and the mobility management unit in the second network or the location information of the dual-mode terminal in the second network. 2. The method of claim 1, wherein the second network is different from the first network. 3. The method according to claim 2, wherein the first network is a CDMA1x network, and the second network is a high-speed packet data HRPD network, The base station application protocol BSAP is used between the MSC/VLR in the CDMA1x network and the mobility management unit in the HRPD network to assign address information as a signaling node to the mobility management unit, and configure the mobility management unit in the MSC/VLR Address information, Said step A includes: after the dual-mode terminal performs position registration in the HRPD network, the mobility management unit in the HRPD network sends a position update request to the MSC/VLR in the CDMA1x network, and the position update request carries the dual-mode terminal identification ; Said step B includes: after the MSC/VLR in the CDMA1x network receives the location update request, according to the stored mobility management unit address information, determine the mobility management unit as the signaling source node, and the MSC/VLR records the dual-mode terminal and Correspondence between mobility management units in the HRPD network. 4. The method according to claim 3, wherein the location update request further carries: location registration type, or network indication parameters of the current network, or a combination of the above two. 5. The method according to claim 4, wherein the location registration type is a preset fixed value. 6. method according to claim 2, is characterized in that, described first network is CDMA1x network, and described second network is HRPD network, The MSC/VLR in the CDMA1x network is connected to the mobility management unit in the HRPD network through a custom interface, The step A is: after the dual-mode terminal performs position registration in the HRPD network, the mobility management unit in the HRPD network sends a position update request to the MSC/VLR in the CDMA1x network, and the position update request carries the dual-mode terminal identification and the mobility snap-in ID. 7. The method according to claim 6, wherein the location update request further carries: system identification, network identification and grouping area identification. 8. The method according to claim 1, further comprising after the step B: after the first network receives the voice call initiated by the dual-mode terminal, the MSC/VLR in the first network according to the recorded dual-mode The corresponding relationship between the dual-mode terminal and the mobility management unit in the second network determines the mobility management unit where the dual-mode terminal is currently located, and notifies the dual-mode terminal of a new voice call through the mobility management unit. 9. method according to claim 1, is characterized in that, In step B, if the MSC/VLR records the correspondence between the dual-mode terminal and the mobility management unit for the first time, then the MSC/VLR performs location registration in the HLR, and registers the identification of the MSC/VLR into the HLR . 10. A system for dual-mode terminal location registration, the system comprising: HLR, MSC/VLR, base station controller BSC/packet control function PCF, packet data service node PDSN, BTS, and MSC/VLR in the first network respectively Connected with HLR and BSC/PCF, BSC/PCF connected with BTS, BSC/PCF connected with PDSN, mobility management unit in the second network, characterized in that MSC/VLR is connected with mobility management unit; in dual-mode terminal After the second network performs location registration, the mobility management unit transmits location information of the dual-mode terminal in the second network to the MSC/VLR. 11. The system of claim 10, wherein the second network is different from the first network. 12. system according to claim 11, is characterized in that, described first network is CDMA1x network, and described second network is HRPD network, if HRPD network is Phase1 defined by 3GPP2, then MSC/VLR and described mobile The AN where the mobility management unit is located; if the HRPD network is Phase 2 defined by 3GPP2, the MSC/VLR is connected to the PCF where the mobility management unit is located.

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