CN1941997A - Method for transmitting 3G1X speech call information to users under high-speed group data network - Google Patents

Abstract

A method for transmitting 3G1X voice call information to a dual-mode terminal under a high-speed packet data network, comprising steps: when MS/AT transfers to HRPD network and notifies MSC through AN, if there is 3G1X voice service arriving, MSC passes Alp The interface sends a paging message and a service notification message to the AN, and at the same time sends a request message to the 3G1X network; after receiving the paging message and the service notification message, the AN constructs an AWI, and puts the AWI and the paging message into the HRPD 3G1X service package and downloads it. Send it to MS/AT; after MS/AT receives the paging message and AWI, it will display the calling number and calling name to the user and wait for the user to choose or operate according to the user's preset; if the user chooses to answer, the MS/AT It will transfer to the 3G1X network and return a paging response message to the 3G1X base station according to the information provided in the paging message; if the user refuses to answer, the MS/AT will continue to stay in the HRPD network and send a paging response to the AN indicating that it refuses to answer message, the MSC ends the 3G1X call after receiving the reject message forwarded by the AN.

Description

Method for transmitting 3G1X voice call information to users under high-speed packet data network

technical field

The invention relates to an interoperability scheme between a high-speed packet data (hereinafter referred to as HRPD) network and a 3G1X network, in particular to a method for transmitting 3G1X voice call arrival information to users under the HRPD network.

Background technique

In practical applications, HRPD networks usually appear in the form of joint networking with code division multiple access 20001x (hereinafter referred to as 3G1X) networks, and users use 3G1X/HRPD dual-mode terminals (hereinafter referred to as MS/AT) to access. Logically, the 3G1X network and the HRPD network are two mutually independent networks, and do not support information exchange between the two networks at the network side. With the development of technology, a connection link can be established between the two networks, so that call control and mobility management information can be transmitted between the two networks. For example, when the session control/mobility management (hereinafter referred to as SC/MM) function of the HRPD network is in the access network (hereinafter referred to as the AN), the mobile switching center (hereinafter referred to as the MSC) of the 3G1X network and the AN of the HRPD network A dedicated interface A1p is established between them to carry call control and mobility management information between the MSC and the AN. See Figure 3 for the HRPD interoperability structure reference model after the A1p interface is established. At this time, a dedicated logical interoperability module IWS (InterworkingSolution) should be set in the AN, and the IWS is used to realize the conversion of messages on the A1p interface and 3G1X service messages on the air interface. With the help of IWS, when the user transfers to the HRPD network and notifies the MSC through the A1p interface, if a 3G1X paging message arrives at the MSC, the MSC will transmit the paging message to the HRPD network, and then the HRPD network will pass it to the MS/AT.

According to the current solution discussed in 3GPP2, in the cross-paging scenario, the existing solution does not support the display of the calling number of the 1x call to the HRPD offline user, so the MS/AT can only be transferred to the 1x network passively. That is, when the 1x service arrives, the MSC sends the 3G1X service arrival information to the AN through the paging request message. Since the paging request message cannot carry the calling number, the MS/AT can only interrupt the current HRPD service and transfer it to the 3G1X network and continue the follow-up After the call process is completed, the user can see the calling number and decide whether to answer it. At this time, even if the user does not want to answer the 3G1X call, the HRPD service has been interrupted. In short, the problem with the current solution is that the user cannot know the calling number of the 3G1X call when performing HRPD services, which leads to the blind switching of the terminal between networks, which brings the following problems:

1.3G1X network resource waste

The calling number can only be seen after the MS/AT transfers to the 3G1X network and establishes an air link. If the user refuses to answer at this time, the resources allocated by the 3G1X network for this call are meaningless.

2. Interruption of HRPD service

The MS/AT only needs to interrupt the current HRPD service first, and then switch to the 3G1X network and see the calling number. If the user refuses to answer at this time, the interruption of the previous HRPD service is meaningless.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a method for transmitting 3G1X voice service arrival information to a dual-mode terminal under a high-speed packet data network.

In order to achieve the above object, a method for transmitting 3G1X voice call information to a dual-mode terminal under a high-speed packet data network, comprising steps:

a) When the MS/AT transfers to the HRPD network and notifies the MSC through the AN, if there is a 3G1X voice service arriving, the MSC sends a paging message and a service notification message to the AN through the A1p interface, and at the same time sends a request message to the 3G1X network;

b) After receiving the paging message and the service notification message, the AN constructs the AWI, puts the AWI and the paging message into the HRPD 3G1X service package and sends it to the MS/AT;

c) After MS/AT receives the paging message and AWI, it displays the calling number and calling name to the user and waits for the user to select or operate according to the user's preset;

d) If the user chooses to answer, the MS/AT will transfer to the 3G1X network, and return a paging response message to the 3G1X base station according to the information provided in the paging message;

e) If the user refuses to answer, MS/AT will continue to stay in the HRPD network, and send a paging response message to AN indicating that it refuses to answer, and MSC ends the 3G1X call after receiving the rejection message forwarded by AN.

According to the present invention, the 3G1X service arrival information delivered by the MSC to the AN will include the calling number and the calling name, so that the user can judge the importance of the 3G1X call in advance according to the calling number and the calling name before interrupting the current HRPD service. and decide whether to switch to the 3G1X network to answer the call, which can avoid the interruption of HRPD service and unnecessary occupation of 3G1X network resources caused by an unimportant 3G1X incoming call.

Description of drawings

Figure 1 is the flow of the 3G1X network transmitting 1X voice call arrival information to the user under the high-speed packet data network, taking the user's choice of answering as an example;

Figure 2 is the flow of the 3G1X network transmitting 1X voice call arrival information to users under the high-speed packet data network, taking the user's refusal to answer as an example;

Fig. 3 is the reference model of HRPD interoperability structure after establishing A1p interface (SC/MM function is in AN).

Detailed ways

The present invention mainly includes the MSC's processing of the 3G1X voice call arrival information, the AN's processing and forwarding of the 3G1X voice call information, the actions of the MS/AT after receiving the 3G1X voice call message, and the like.

1. MSC's processing of 3G1X voice call arrival information

When receiving a voice call directed to a user in its service domain, the MSC sends a paging request message and a service notification message to the HRPD AN through the A1p interface, and the service notification message contains the calling number and calling name. At the same time, the MSC sends a paging request message to one or more serving 3G1X base stations (hereinafter referred to as BS) that the called MS/AT may contact. The paging request message may contain a virtual paging indicator (hereinafter referred to as VPI) to inform the 3G1X BS that it is not necessary to send a General Page Message to the called MS/AT on the air interface.

2. AN processing and forwarding of 3G1X voice call information

After receiving the paging request message and service notification message from the MSC, the AN encapsulates the paging request message into a 3G1X service packet and sends it to the MS/AT through the HRPD air interface. And construct a ringing message with information (hereinafter referred to as AWI) message, encapsulate it into a 3G1X service package, and send it to the MS/AT through the HRPD air interface. The calling number and calling name are included in the AWI message.

3. The action of MS/AT after receiving the 3G1X voice call message

After receiving the 3G1X data packet containing the paging request message and the 3G1X service packet containing the AWI message, the MS/AT should display the calling number and calling name to the user and prompt the user to choose whether to answer. The user can make a selection through the man-machine interface without interrupting the ongoing HRPD service. If the user has made advance settings in MS/AT, when the 3G1X call arrives, MS/AT will operate according to the user's preset settings.

If the user chooses to answer, the MS/AT transfers to the 3G1X network, constructs a paging response message according to the message unit in the paging request message and sends it to the 3G1X base station system, and the 3G1X base station system constructs a complete layer 3 message including the paging response and sends it to the MSC. Subsequent operations will be carried out according to the 3GPP2 specification; if the user refuses to answer the call, the MS/AT will encapsulate the paging response message with the service selection set to all "0" into a 3G1X service packet and send it to the AN to indicate that the user refuses to answer the call. The AN includes the paging response message with the service options set to all "0" in the layer 3 message and sends it to the MSC through the A1p interface, and the MSC ends the 3G1X call. During this process, MS/AT will maintain the HRPD business status and will not turn to the 3G1X network.

Claims (4)

1. A method for transmitting 3G1X service arrival information to a dual-mode terminal under a high-speed packet data network, comprising steps: a) When the MS/AT transfers to the HRPD network and notifies the MSC through the AN, if a 3G1X voice service arrives, the MSC sends a paging request message and a service notification message to the AN through the A1p interface, and at the same time sends a paging request to the 3G1X network information; b) After receiving the paging request message and the service notification message, the AN constructs the AWI and the general paging message, and puts the AWI and the general paging message into the HRPD 3G1X service package and sends them to the MS/AT; c) After the MS/AT receives the general paging message and the AWI, it displays the calling number and calling name in the AWI to the user and waits for the user to select or operate according to the user's preset; d) If the user chooses to answer, the MS/AT will transfer to the 3G1X network, and return a paging response message to the 3G1X base station according to the information provided in the general paging message; e) If the user refuses to answer, MS/AT will continue to stay in the HRPD network, and send a paging response message to AN indicating that it refuses to answer, and MSC ends the 3G1X call after receiving the rejection message forwarded by AN. 2. The method according to claim 1, wherein the MSC notifies the AN of the arrival of a 3G1X voice service by sending a paging request message and a service notification message to the AN, and includes the calling number and name in the service notification message. 3. The method according to claim 1, wherein if the user decides to answer the 3G1X call, the dual-mode terminal will construct a paging response message according to the content of the received general paging message and send it to the 3G1X network after it is transferred to the 3G1X network . 4. The method according to claim 1, wherein if the user decides to refuse to answer the 3G1X call, the MS/AT will construct a paging response message that the service selection is set to all "0" and send it to the AN, and the AN includes the message in The Layer 3 message is forwarded to the MSC, and the MSC ends the call according to the message.

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