WO2010066188A1 - Method, apparatus and communication system for inter-network handover - Google Patents

Abstract

The embodiments of the present invention provide a method, apparatus and communication system for inter-network handover; As an example, the embodiment of the method includes: a packet control function receives a request message for handing over to a second network initiated by a terminal; based on the request message, an updating request is sent to a packet data service node to request the packet data service node to update an A10 link of the terminal in a first network to be an A10 link of the second network; and a response message is received from the packet data service node, an A8 link with the second network is established for the terminal. The embodiment has the following advantages: the packet control function can send the updating request after it receives the handover request message initiated by the terminal, the packet data service node updates the A10 link of the terminal in the first network to be the A10 link of the second network based on the request, the packet control function then establishes the A8 link with the second network for the terminal, and the handover of the terminal between the first network and the second network is realized.

Description

 Method, device and communication system for switching between networks

 The present invention relates to the field of communications technologies, and in particular, to a method, apparatus, and communication system for inter-network handover.

Background technique

 The Evolution Data Only (EVDO) network is a network with only data services. The code division multiple access IX (CDMA IX) network can also support services such as voice. The terminal can access the network. The EVDO network can also access the CDMA IX network, and the terminal may switch between the two networks as needed.

 When the terminal access EV DO and the CDMA IX network use the same Data Service Controller (PCF), the handover method may be: when the terminal moves to the EV DO network coverage boundary during the data service of the EV DO network The terminal monitors the CDMA IX network with better signal conditions, and initiates a service establishment request on the CDMA IX network; the access network (AN) detects that the terminal is no longer in the EV DO network, and the AN releases the EV DO data service A8. The link, the base station (BS), requests the PCF to establish an A8 link for the CDMA IX data service, and the PCF updates the A10 link. The A8 link and the A10 link are links established by the PCF for the terminal, the link air interface and the core network; the data on the network side is first sent to the A10 link, the A10 link is forwarded to the A8 link, and the A8 link is forwarded to the terminal through the air interface; The data can be sent to the A8 link through the air interface, then forwarded to the A10 link, and then sent to the network side.

The time of the DO network is usually longer than the time when the terminal initiates a service establishment request on the CDMA IX network, so that the AN may not detect that the terminal is not in the EV DO network, nor does it release the A8 link of the EV DO data service, and the BS has received the terminal initiation. The CDMA IX data service setup request establishes a new A8 link for the terminal request, and the PCF cannot process one A10 link corresponding to two A8 links, and only the BS request setup message is discarded, and the terminal is unable to complete the common PCF. Switching between active EV DO data traffic and active CDMA IX data traffic.

Summary of the invention The embodiment of the invention provides a method, a device and a communication system for switching between networks. When a common data service controller (PCF) is implemented, the terminal switches between the data service of the first network and the data service of the second network of the activated state. .

 The method for the inter-network handover provided by the present invention may be implemented by the following technical solutions: The data service controller receives a request message initiated by the terminal to switch to the second network;

 And sending, by the request message, an update request to the data service serving node, to request the data service serving node to update the A10 link of the terminal in the first network to the second network.

A10 link;

 Receiving a response message from the data service service node, establishing an A8 link with the second network for the terminal.

 The embodiment of the invention further provides another method for switching between networks, including:

 Receiving, by the data service controller, a request message initiated by the terminal to switch to the second network;

 Sending a setup request to the data service serving node according to the request message, where the data service serving node determines, according to the establishment request, that the terminal initiates handover to the second network by the first network, where the terminal is Establishing an A10 link in the second network;

 Receiving a response message from the data service service node, establishing an A8 link with the second network for the terminal.

 The embodiment of the invention further provides a method for processing a data service link, including:

 The access device of the first network receives a service request message from a data service controller, where the service request message carries terminal information;

 If the first network determines that the terminal is a dual mode terminal and the terminal is not in the first network, the service request message is forwarded to the access device of the second network to query the status of the terminal;

 Receiving the service status information of the access device from the second network, and forwarding the service status information to the data service controller, where the data service controller is configured to determine, according to the service status information, the terminal When the voice activation state of the second network is in progress, the terminal transits the data service link state of the first network to the sleep state.

 The embodiment of the invention further provides a data service controller, including:

a receiving unit, configured to receive a request message initiated by the terminal to switch to the second network; a processing unit, configured to send, according to the request message, an update request to a data service service node, to request the data service service node to update an A10 link of the terminal in the first network to an A10 link of the second network ;

 The receiving unit is further configured to receive a response message from the data service serving node, and the connection establishing unit is configured to establish, according to the response message, an A8 link with the second network for the terminal.

 The embodiment of the invention further provides a data service service node, including:

 a receiving unit, configured to receive a setup request from a data service controller, where the setup request includes a service parameter identifier, a terminal identifier, the data service controller address, and service option information SO, and a determining unit, configured to use, according to the service parameter The identifier SR_ID, the terminal identifier, the data service controller address, and the service option information SO determine whether the terminal initiates a handover to the second network by the first network;

 And an establishing unit, configured to establish an A10 link with the second network after the determining unit determines that the terminal initiates a handover to the second network by the first network.

 The embodiment of the invention further provides a data service controller, including:

 a receiving unit, configured to receive packet data from a terminal of the data service serving node, and a triggering unit, configured to send, according to the packet data of the terminal received by the receiving unit, a service request message to an access device of the first network, triggering Reactivation of the terminal in an access device of the first network;

 The receiving unit is further configured to receive service status information of an access device from the first network;

 a processing unit, configured to determine, according to the service status information, a service status of the terminal, if the terminal receives a voice activation status of the second network, the terminal is in a data service of the first network The link state transitions to the sleep state.

 The embodiment of the present invention further provides a communication system, including a data service controller PCF, wherein the data service controller is communicably connected to the first network, the second network, and the data service service node, where:

The data service controller is configured to receive a request message that is initiated by the terminal to be switched to the second network by using the second network, and send the message to the data service service node according to the request message. a new request for requesting the data service serving node to update an A10 link of the terminal in the first network to an A10 link of the second network; receiving a response message from the data service serving node, The terminal establishes an A8 link with the second network.

 The embodiment of the present invention further provides another communication system, including: a data service controller, wherein the data service controller is communicably connected to the first network, the second network, and the data service service node data service service node, where :

 a data service controller, configured to receive a request message that the terminal initiates handover to the second network by using the second network, send a setup request to the data service service node according to the request message, and receive the data service service node from the data service service node. a response message, establishing, for the terminal, an A8 link with the second network;

 The data service service node is configured to establish, according to the establishment request, that the terminal initiates a handover to the second network by using the first network, where the terminal establishes an A10 link in the second network, where The data service controller sends a response message.

 The embodiment of the present invention further provides a communication system, including: a data service controller, wherein the data service controller is communicably connected to the first network and the data service service node, where: the data service controller receives And the packet data of the terminal from the data service serving node sends a service request message to the access device of the first network, triggering reactivation of the terminal in the access device of the first network, and receiving the The service status information of the access device of the network is determined according to the service status information, and if the terminal is in the voice activation state of the second network, the data service link state of the terminal in the first network is migrated to the sleep state. .

 The foregoing technical solution has the following beneficial effects: the PCF may send an update request to the data service serving node (PDSN) after receiving the request message initiated by the terminal to switch to the second network, where the PDSN places the terminal in the first network according to the request. The A10 link is updated to the A10 link of the second network, and the PCF establishes an A8 link with the second network for the terminal, so that the terminal switches between the first network and the second network.

DRAWINGS

 1 is a schematic flow chart of a method according to an embodiment of the present invention;

 2 is a schematic flowchart of a method according to Embodiment 2 of the present invention;

3 is a schematic flowchart of a method according to Embodiment 3 of the present invention; 4 is a schematic flow chart of a method according to Embodiment 4 of the present invention;

 FIG. 5 is a schematic flowchart of a method according to Embodiment 5 of the present invention; FIG.

 6 is a schematic structural diagram of a data service controller according to Embodiment 6 of the present invention;

 7 is a schematic structural diagram of a data service service node according to Embodiment 7 of the present invention;

 8 is a schematic structural diagram of a data service controller according to Embodiment 8 of the present invention;

 9 is a schematic structural diagram of a communication system according to Embodiment 9 of the present invention;

 10 is a schematic structural diagram of a tenth communication system according to an embodiment of the present invention;

 FIG. 11 is a schematic structural diagram of a communication system according to Embodiment 11 of the present invention.

detailed description

 The embodiment of the invention provides a method, a device and a system for switching between a data optimization network and a code division multiple access network. When a total PCF is implemented, the terminal is in an active state EV DO data service and an active state CDMA IX data service. Switch between.

 The abbreviations used in the following embodiments can be found in: EVDO Access Network (AN), EVDO Access Terminal (AT), Base Station (BS), IX Mobile Device (Mobile Station) , MS), International Mobile Subscriber Identity (IMSSI) Mobile Switching Center (MSC), Packet Control Function (PCF), Data Service Serving Node (Packet Data Serving Node, PDSN), Point-to-Point Protocol (PPP), Service Option (SO) Service Parameter Identifier (SR_ID); In addition, the CDMA IX network can be called IX network.

 Embodiment 1 As shown in FIG. 1, Embodiment 1 of the present invention provides a method for switching between networks, which may include the following steps:

 Step 101: Receive a request message initiated by the terminal to switch to the second network.

 The request message may carry the service option information so. In the embodiment of the present invention, the terminal stays in the first network to perform data service, and when it moves to the edge of the first network, if the second network is detected, The signal is better and a handover request can be initiated to the second network. Here, the first network may be an EV DO network, the second network is a CDMA IX network, or the first network may be a CDMA IX network, and the second network is an EV DO network.

Step 102: Send an update request to the PDSN according to the request message, for requesting the PDSN. Updating the A10 link of the terminal in the first network to the A10 link of the second network.

 Step 103: Receive a response message from the PDSN, and establish an A8 link with the second network for the terminal.

 The execution body of the foregoing step may be a PCF. The PCF may determine, by the SO, whether the terminal has a handover between the first network and the second network. When an inter-network handover occurs, the A10 link is updated to the A10 link of the second network. Further, an A8 link with the second network is established to implement handover between the EV DO data service and the active CDMA IX data service when the PCF is shared.

 Further, in the foregoing embodiment, the request sent to the PDSN in the foregoing step 102 may further carry charging related information, such as requesting the PDSN to stop charging the terminal in the first network, and start The terminal is charged in the second network.

 Further, after establishing the A8 link with the second network, the method further includes: starting a process of releasing the A8 link of the terminal in the first network, where the initiated message may include a reason for release, such as a data link. The road has been switched.

 The executor of the foregoing step may be a PCF. The PCF releases the A8 link of the first network by releasing the A8 link of the first network, thereby saving network resources.

 In the embodiment of the present invention, the first network may be an EV DO network, the second network may be a CDMA IX network, and the service option information SO is 33; or the first network may be a CDMA IX network. The second network may be an EV DO network, and the service option information SO is 59.

 Embodiment 2 As shown in FIG. 2, the embodiment of the present invention further provides another method for switching between networks, which may include the following steps:

 Step 201: Receive a request message initiated by the terminal to switch to the second network.

 In this embodiment of the present invention, the request message may carry service option information SO. The terminal stays in the first network for data service. When it moves to the first network edge, if the signal of the second network is detected to be better, the terminal may initiate a handover request to the second network. Here, the first network may be an EV DO network, the second network is a CDMA IX network, or the first network may be a CDMA IX network, and the second network is an EV DO network.

Step 202: Send a setup request to the PDSN according to the request message, where, if the PDSN determines, according to the establishment request, that the terminal initiates handover to the second network by using the first network, The terminal establishes an A10 link in the second network.

 Step 203: Receive a response message from the PDSN, and establish an A8 link with the second network for the terminal.

 In the embodiment of the present invention, the execution entity may be a PCF, and after the PCF sends a setup request to the PDSN according to the request message, the PDSN determines, according to the establishment request, that the terminal initiates handover to the first network by using the first network. In the second network, the terminal establishes an A10 link in the second network. The PCF then establishes an A8 link with the second network for the terminal, such that the terminal switches from the first network to the second network.

 In the embodiment of the present invention, the A10 link for the terminal to be established in the second network may include: Step 204: As above, the PDSN receives an establishment request sent by the data service controller PCF to establish a second network A10 link. The establishment request may carry related information for establishing an A10 link, such as information including a monthly service parameter identifier SR_ID, a terminal identifier (such as an international mobile subscriber identity IMSI or a mobile node identifier MNID, etc.), a PCF address, and service option information SO. Further, the message may further include charging information, such as setting the charging form setup information and starting the charging information in the charging form.

 Step 205: The PDSN determines, according to the service parameter identifier, the terminal identifier (such as the International Mobile Subscriber Identity (IMSI) or the mobile node identifier MNID, the data service controller address, and the service option information, whether the terminal MS/AT is in the first network and the first A data service switching occurs between the two networks. If yes, step 206 is performed.

 Step 206: Establish an A10 link with the second network according to the request.

 In the above embodiment, after the PCF sends a setup request to the PDSN, the PDSN determines, according to the related information, that if the handover between the first network and the second network occurs, the A10 link with the second network is established for the terminal, and the PCF is established and The A8 link of the two networks, where the first network may be an EV DO network, the second network may be a CDMA IX network, or the first network may be a CDMA IX network, and the second network may be an EV DO network, so that Switching between the active EV DO data service and the active CDMA IX data service when the PCF is implemented.

Further, after the A8 link with the second network is established, the method further includes: releasing a process for releasing the A10 and A8 links of the terminal in the first network, by releasing the A8 and A10 links of the first network. Save network resources. Embodiments 1 and 2 will be described in detail in Embodiments 3 and 4 with the EV DO network as the first network and the CDMA IX network as the second network.

 The third embodiment of the present invention further provides an embodiment for applying the concept of the second embodiment. The embodiment further illustrated in the first embodiment is as follows:

 In this solution, the initial state of the terminal is the data service active state in the EV DO network. Step 301: The terminal MS/AT detects the IX network with better signal conditions.

 If the terminal moves to the EV DO network coverage edge during the data service process of the EV DO network, if the MS/AT detects the IX network with better signal conditions, the handover to the IX network may be initiated.

 Step 302: The MS/AT initiates a service start call to the IX network.

 The service start call may be an ORM message, and the message may carry service option information SO (Service Option), such as SO=33, to indicate that the service origination call is a call from the IX network, and the foregoing service start call message may be The terminal sends to the base station BS of the IX network. At this time, the EV DO system may not detect that the air interface connection between the terminal and the EV DO network is interrupted, and the A8 link of the data service of the terminal in the EV DO network is still in an active state.

 Step 303: After receiving the service start call, the base station BS sends a data service request to the PCF. The data service establishment request may carry the service option information (Service Option, SO)=33 to indicate that the service origination call is a call from the IX network, and the BS sends the data service request to the PCF for use. Requesting to establish an A8 link for the IX data service, the data service request may be A9-Setup A8.

 Step 304: The PCF determines whether the SO is changed. If yes, the All message may be sent to the PDSN to update the A10 link of the EV DO data service to the A10 link of the IX data service. The All message may pass the user data packet protocol. User Datagram Protocol (UDP) bearer, the All message can be an A 11 -Registration Request message.

 Further, the All message may further carry charging information, requesting the PDSN to stop charging of the data service of the terminal in the EV DO network, and starting charging of the data service of the terminal in the CDMA IX network.

 Step 305: The PDSN updates the A10 link of the EV DO data service to the A10 link of the IX data service, and returns a response message to the PCF, such as an All-Registration Reply message.

In this way, the PDSN has updated the A10 link of the EV DO data service of the terminal to IX data service A10 link.

 Step 306: The PCF establishes an A8 link with the BS.

 After receiving the response message from the PDSN, the PCF establishes an A8 link with the BS, and returns an acknowledgement message, such as A9-Connect A8, to the BS after the establishment is completed.

 In this way, the terminal MS/AT establishes a corresponding data connection in the IX network, and the terminal switches from the EV DO network to the CDMA IX network, and is in the IX network data service active state.

 Further, the embodiment of the present invention further includes the following steps:

 Step 307: The PCF initiates releasing the A8 link of the terminal in the EV DO network.

 For example, the PCF may send an A9-Disconnect A8 message to the EV DO access device AN, and may carry the release reason in the message, for example, may switch the data service link to another network, thereby notifying the release of the A8 link. For normal release.

 Further, the EV DO access device AN may return an A9-Release A8 message to the PCF, and the EV DO access device AN may send the A9-Release A8 message to the EV DO access device AN. Return to the A9-Release A8 complete message to complete the release of the A8 link.

 Of course, in the embodiment of the present invention, the first network may also be a CDMA IX network, and the second network may also be an EV DO network, and the terminal may also be moved to a data service in a CDMA IX network. At the edge of the CDMA IX network, the EV DO network with better signal detection initiates a handover to the EV DO network, and the process is basically the same as the above process, and the difference is that the terminal initiates a service message to the EV DO network. If the service option information SO carried in the value is 59, the EV DO network can determine that the initial call is a call from the EV DO network. Thus, by the above method, the terminal can switch from the CDMA IX network to the EV DO network.

 The fourth embodiment of the present invention further provides an embodiment for applying the idea of the second embodiment. The second embodiment is further illustrated. As shown in FIG. 4, the following steps may be included:

 In this solution, the initial state of the terminal is in the EV DO network active state.

 Step 401: The terminal MS/AT detects the IX network with better signal conditions.

 If the terminal moves to the EV DO network coverage edge during the data service process of the EV DO network, if the MS/AT detects the lx network with better signal conditions, the handover to the IX network may be initiated.

 Step 402: The MS/AT initiates a service start call to the IX network.

The service origination call may be an ORM message, and the message may carry service option information SO (Service Option), such as SO=33, is used to indicate that the service origination call is a call from the IX network, and the foregoing service start message may be sent by the terminal to the base station BS of the IX network, and the EV DO system may not yet be It is detected that the air interface connection between the terminal and the EV DO network is interrupted, and the A8 link of the data service of the terminal in the EV DO network is still in an active state.

 Step 403: After receiving the service start call, the base station BS sends a data service request to the PCF. The data service establishment request may carry the service option information (Service Option, SO)=33 to indicate that the service origination call is a call from the IX network, and the BS sends the data service request to the PCF for use. Requesting to establish an A8 link for the IX data service, the data service request may be A9-Setup A8.

 Step 404: The PCF sends a setup request (such as an All message) to the PDSN, requesting to establish an A10 link of the data service of the terminal MS/AT in the CDMA IX network.

 The All message may be carried by a User Datagram Protocol (UDP) 7, which may be an All-Registration Request message.

 Further, in the embodiment of the present invention, the All message may also carry related information of the A10 link of the data service established in the CDMA IX network, such as the service parameter identifier SR_ID and the terminal identifier (such as the international mobile subscriber identity IMSI). Or information such as the mobile node identifier MNID, the PCF address, and the service option information SO. Further, the message may further include charging information, such as setting up the charging form setup information and starting the meter in the charging form. The star information of the fee.

 Step 405: The PDSN determines whether the terminal MS/AT is in the EV DO network by using the service parameter identifier SR_ID, the terminal identifier (such as the international mobile subscriber identity code IMSI or the mobile node identifier MNID, etc.), the PCF address, and the service option information SO. A data service handover occurs between CDMA IX networks, and if so, an A10 link is established for the terminal in the CDMA IX network.

 After the A10 link is established, the PDSN returns a response message to the PCF, such as an All-Registration Reply message.

 Step 406: The PCF establishes an A8 connection with the BS.

 After receiving the response message from the PDSN, the PCF establishes an A8 link with the BS, and returns an acknowledgement message, such as A9-Connect A8, to the BS after the establishment is completed.

In this way, the terminal MS/AT establishes a corresponding data connection in the IX network, and is in the IX network data service active state. Further, the embodiment of the present invention further includes the following steps:

 Step 407: The PDSN interacts with the PCF to trigger the release of the A10 link of the terminal in the EV DO network. The process is a prior art, and details are not described herein again.

 Step 408: Further, the PCF interacts with the EV DO access device AN to release the A8 link of the terminal in the EV DO network.

 For example, the PCF may send an A9-Disconnect A8 message to the EV DO access device AN, and may carry the release reason in the message, for example, may switch the data service link to another network, thereby notifying the release of the A8 link. For normal release.

 Further, the EV DO access device AN may return an A9-Release A8 message to the PCF, and the EV DO access device AN may send the A9-Release A8 message to the EV DO access device AN. Return to the A9-Release A8 complete message to complete the release of the A8 link.

 Of course, in the embodiment of the present invention, the first network may also be a CDMA IX network, and the second network may also be an EV DO network, and the terminal may also be moved to a data service in a CDMA IX network. At the edge of the CDMA IX network, the EV DO network with better signal detection initiates handover to the EV DO network, and the process is basically the same as the above process, the difference being that the terminal starts the service to the EV DO network. The value of the service option information SO carried in the message is 59, and the EV DO network can determine that the originating call is a call from the EV DO network. Thus, by the above method, the terminal can switch from the CDMA 1 X network to the EV DO network.

 The fifth embodiment of the present invention provides another embodiment. In this solution, the initial state of the terminal is that the MS/AT is performing the IX voice service and is in the EV DO data service sleep state. As shown in Figure 5, the following steps can be included:

 Step 501: The PCF receives packet data of the EV DO service from the PDSN.

 If the PCF receives the packet data of the EV DO service of the terminal MS/AT of the PDSN, the EV DO service may be reactivated in the EV DO network access device, and the access device may be an EV DO network AN. .

 Step 502: The PCF sends a service request message to the EV DO network access device AN.

Here, if the PCF receives the downlink data packet of the EV DO service, the EV DO service may be reactivated in the EV DO network AN, for example, the service request message may be sent to the EV DO network access device AN, such as A9. -BS Service request message. Step 503: The AN forwards the foregoing service request message to an access device of the CDMA IX network. If the EV DO network determines that the terminal MS/AT is a dual mode terminal and the terminal is not currently in the EV DO network, the service request message may be forwarded to the access device of the CDMA IX network, for example: may be by EVDO AN The service request message is forwarded to the BS of the CDMA IX network, and the BS is queried whether the MS/AT is in the voice activated state of the IX.

 Step 504: The BS sends the service status information of the MS/AT to the EV DO network access device AN. For example, the BS may send an A9-BS Service response message to the EVDO AN, where the message carries information that the MS/AT is in the 1X voice activation state.

 Step 505: The EV DO network access device AN forwards the service state information to the PCF. If the EVDO AN forwards the A9-BS Service response message to the PCF, if the PCF finds that the MS/AT is in the IX voice activation state, the EV DO data service link state of the terminal is migrated to In the dormant state, further, the Point-to-Point Protocol (PPP) link may be maintained, and the process ends. If the PCF finds that the MS/AT is not in the IX voice activation state, the triggering terminal switches to the EV DO. The network can specifically perform the following process:

 Step 506: The AN of the EV DO network sends a Page message, and the terminal MS/AT is paged.

 Step 507: The MS/AT sends a response page message of the Page message.

 Step 508: After receiving the MS/AT response paging message, the AN establishes a traffic channel for the MS/AT, and sends a request to the PCF to establish an A8 and A10 link message.

 Step 509: The PCF establishes an A8 service link for the MS/AT through A9 signaling.

 Step 510: The PCF establishes an A10 service link for the MS/AT through the All signaling.

 Upon completion of the handover in step 510, the MS/AT can perform data traffic transmission on the EVDO network. In the above embodiment, the terminal stays in the CDMA IX network. If the PCF receives the EV DO service data of the terminal from the PDSN, the EV DO service may be reactivated in the EV DO network AN. The EV DO network AN The CDMA IX base station is first queried to the current service state of the terminal, and the PCF is processed according to the current service state of the terminal. If the terminal is in the CDMA IX voice activation state, the EV DO network link is changed to the sleep state and maintained. Point-to-point protocol links, which can avoid the waste of system resources caused by the EV DO network in the prior art continuously initiating AN reactivation.

Embodiment 6 As shown in FIG. 6, an embodiment of the present invention provides a data service controller PCF. Can include:

 The receiving unit 601 is configured to receive a request message that is initiated by the terminal to switch to the second network. The processing unit 602 is configured to send, by using the request message, an update request to the PDSN, to request the PDSN to use the terminal to be the A10 in the first network. The link is updated to the A10 link of the second network described above;

 In the embodiment of the present invention, the request message received by the receiving unit 601 may carry service option information (Service Option, SO), and the processing unit 602 may further determine the value of the service option information SO. After the outbound terminal switches between the first network and the second network, an update request may be sent to the PDSN for requesting the PDSN to update the A10 link of the terminal in the first network to the A10 link of the second network, where The update request may be an Al 1 message, such as an All-Registration Request message. After the PDSN updates the A10 link, it may return a response message to the receiving unit 601, such as an Al 1-Registration Reply message. The receiving unit 601 is further configured to receive a response message from the PDSN. The PCF may further include a connection establishing unit 603, configured to establish, according to the response message, a link with the A8 of the second network according to the response message. .

 Further, the processing unit 602 may be further configured to carry the charging information in the update request, to request the PDSN to stop charging the data service of the terminal in the first network, and start the data service of the terminal in the second network. Billing.

 In this embodiment, the first network may be an EV DO network, the second network may be a CDMA IX network, and the service option information SO is 33; or the first network may be a CDMA IX network. The second network may be an EV DO network, and the service option information SO is 59.

 Thus, by the processing of the above apparatus, the terminal can switch between the first network and the second network.

 Embodiment 7 As shown in FIG. 7, an embodiment of the present invention further provides a data service service node PDSN, including:

The receiving unit 701 is configured to receive a setup request from the data service controller PCF, where the setup request includes information such as a service parameter identifier SR_ID, a terminal identifier, the PCF address, and service option information SO. The setup request may be an All message, such as All. -Registration Request message; Further, the setup request may also carry charging information, such as setting up a charging form setup information and The star information of the charging is started in the charging form.

 The determining unit 702 is configured to determine, according to the service parameter identifier SR_ID, the terminal identifier, the PCF address, and the service option information SO, whether the terminal initiates the handover to the second network by using the first network. In this embodiment, the first network The second network may be a CDMA IX network, and the service option information SO is 33; or the first network may be a CDMA IX network, and the second network may be an EV DO network. Then, the service option information SO is 59.

 The establishing unit 703 is configured to establish, for the terminal, an A10 link with the second network, if the determining unit 702 determines that the terminal is initiated by the first network to switch to the second network.

 In this embodiment, if the PDSN determines that the terminal has switched from the first network to the second network according to the related information in the setup request sent by the PCF, the terminal establishes the second network with the second network. The A10 link enables the terminal to switch from the first network to the second network.

 Embodiment 8 As shown in FIG. 8, the embodiment of the present invention further provides a data service controller PCF, including:

 The receiving unit 801 is configured to receive packet data of the terminal from the PDSN.

 The triggering unit 802 is configured to send a service request message to the EV DO network access device according to the packet data of the terminal received by the receiving unit 801, and trigger a reactivation of the terminal in the EV DO network access device.

 In this embodiment, if the receiving unit 801 receives the packet data of the EV DO service of the terminal MS/AT of the PDSN, the re-activation of the EV DO service of the terminal in the EV DO network access device may be initiated. The incoming device may be an EV DO network AN, where the service request message may be an A9-BS Service request message.

 Further, if the EV DO network determines that the terminal MS/AT is a dual mode terminal, and the terminal is not currently in the EV DO network, the service request message may be forwarded to the access device of the CDMA IX network to the CDMA IX network. The access device queries the service status of the terminal, for example, the EVDO AN may forward the service request message to the BS of the CDMA IX network; the access device of the CDMA IX network sends the service status information of the terminal to the EV DO The network access device, if it is sent to the EV DO network access device by using an A9-BS Service response message, sends the service status information to the PCF by the EV DO network access device.

The receiving unit 801 is further configured to receive a service from the EV DO network access device. State information

 The processing unit 803 is configured to determine, according to the service state information, the service state of the terminal, if the terminal receives the CDMA IX voice activation state, and then moves the EV DO data service link state of the terminal to a sleep state; Further, the point-to-point protocol (PPP) link may be maintained. If the terminal is found to be in the IX voice activation state, the terminal may be triggered to switch to the EV DO network by referring to the prior art.

 Embodiment 9 As shown in FIG. 9, an embodiment of the present invention further provides a communication system, including: a data service controller 901 (PCF), wherein the data service controller 901 is communicably connected to the first network 902, The second network 903 and the data service service node 904 (PDSN) are connected, wherein:

 The data service controller 901 (PCF) is configured to receive a request message that is initiated by the terminal to be switched to the second network 903 by using the second network 903, and send an update request to the data service serving node 904 (PDSN) according to the request message. And requesting the data service serving node 904 (PDSN) to update the A10 link of the terminal in the first network 902 to the A10 link of the second network 903; receiving a response message from the data service serving node 904 (PDSN) And establishing an A8 link with the foregoing second network 903 for the terminal.

 In the foregoing embodiment, the PCF may determine, by using the foregoing SO, whether the terminal has a handover between the first network and the second network, and when an inter-network handover occurs, update the A10 link to the A10 link of the second network, and further, establish and The A8 link of the second network realizes the handover between the EV DO data service and the activated CDMA IX data service when the PCF is shared.

 Embodiment 10 As shown in FIG. 10, an embodiment of the present invention further provides another communication system, including: a data service controller 1001 (PCF), wherein the data service controller 1001 is communicably connected to the first network 1002. The second network 903 is connected to the data service service node 1004 (PDSN), where: the data service controller 1001 (PCF) is configured to receive a request message that the terminal initiates the handover to the second network 1003 by using the foregoing second network 1003, according to The request message sends a setup request to the data service service node 1004 (PDSN), receives a response message from the data service service node 1004 (PDSN), and establishes an A8 link with the second network 1003 for the terminal.

The data service service node 1004 (PDSN) is configured to establish, according to the foregoing setup request, that the terminal initiates a handover to the second network 1003 by the first network 1002, where the terminal establishes an A10 link in the second network 1003. The above data service controller 1001 (PCF) sends a response Message.

 In the above embodiment, after the PCF sends a setup request to the PDSN, the PDSN determines, according to the related information, that if the handover between the first network and the second network occurs, the A10 link with the second network is established for the terminal, and the PCF is established and the second The A8 link of the network, where the first network may be an EV DO network, the second network may be a CDMA IX network, or the first network may be a CDMA IX network, and the second network may be an EV DO network, so that a common PCF can be implemented. The terminal switches between the active EV DO data service and the active CDMA IX data service.

 Embodiment 11 As shown in FIG. 11, the embodiment further provides another communication system, including: a data service controller 1101 (PCF), and the data service controller 1101 is communicably connected to the EV DO network 1102. And the data service service node 1103 (PDSN) is connected, where:

 The data service controller 1101 (PCF) receives the packet data of the terminal from the data service serving node 1103 (PDSN), and sends a service request message to the access device of the EV DO network 1102, triggering the terminal in the EV DO network 1102. Re-activation in the access device, receiving service state information of the access device from the EV DO network 1102, and determining, according to the service state information, that if the terminal is in a CDMA IX voice activation state, the EV DO data service chain of the terminal is used. The path state migrates to the sleep state.

 In the above embodiment, the terminal stays in the CDMA IX network. If the PCF receives the EV DO service data of the terminal from the PDSN, the EV DO service may be reactivated in the EV DO network AN, and the EV DO network AN is activated. First, the CDMA IX base station is queried for the current service state of the terminal, and the PCF processes according to the current service state of the terminal. If the terminal is in the CDMA IX voice activation state, the EV DO network link is changed to the dormant state and the point-to-point protocol link is maintained. In this way, the EV DO network in the prior art can continuously avoid the waste of system resources caused by the AN reactivation.

 A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, the above mentioned storage. The medium can be a memory (RAM), a memory, a read only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any of those known in the art. Other forms of storage media.

The method, device and communication system for inter-network handover provided by the embodiments of the present invention are performed. The description of the above embodiments is only for helping to understand the method of the present invention and its core ideas; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific embodiments and application scopes. In summary, the content of the specification should not be construed as limiting the invention.

Claims

Rights request  A method for switching between networks, characterized in that it comprises:  Receiving, by the data service controller, a request message initiated by the terminal to switch to the second network;  And sending, by the request service message, an update request to the data service service node, to request the data service service node to update the A10 link of the terminal in the first network to the A10 link of the second network;  Receiving a response message from the data service service node, establishing an A8 link with the second network for the terminal.  The method according to claim 1, wherein the data service controller receives the request message that the terminal initiates the handover to the second network, specifically:  The access device of the second network receives a service origination call from the terminal, where the service origination call carries service option information SO;  The access device of the second network sends a data service request to the data service controller according to the service start call, where the data service request carries the service option information SO.  The method according to claim 2, wherein the sending the update request to the data service service node according to the request message is specifically:  The data service controller determines, according to the service option information SO, that the first network in the terminal request switches to the second network, and sends an update request to the data service service node, where the data service service node requests the data service service node to use the terminal. The A10 link in the first network is updated to the A10 link of the second network.  The method according to claim 3, wherein the update request further includes charging information, configured to request the data service serving node to stop charging the data service of the terminal in the first network, and start Charging the data service of the terminal in the second network.  5. The method according to claim 4, wherein the method further comprises:  The data service controller sends an A9-Disconnect A8 message to the access device of the first network, where the message carries the release reason;  Receiving an A9-Release A8 message from an access device of the first network; Returning an A9-Release A8 complete message to the access device of the first network, releasing the A8 link of the terminal in the first network. The method according to any one of claims 1 to 5, wherein the first network is an EV DO network, and the second network is a CDMA IX network, and the service option information SO is 33, Said that the service origination is a call from a CDMA IX network; or  The first network is a CDMA IX network, and the second network is an EV DO network, and the service option information SO is 59, indicating that the service origination call is a call from the EV DO network.  7. A method for switching between networks, characterized in that it comprises:  Receiving, by the data service controller, a request message initiated by the terminal to switch to the second network;  Sending a setup request to the data service serving node according to the request message, where the data service serving node determines, according to the establishment request, that the terminal initiates handover to the second network by the first network, where the terminal is Establishing an A10 link in the second network;  Receiving a response message from the data service service node, establishing an A8 link with the second network for the terminal.  The method according to claim 7, wherein the request message that the data service controller receives the handover to the second network by the terminal is specifically:  The access device of the second network receives a service origination call from the terminal, where the service origination call carries service option information SO;  The access device of the second network sends a data service request to the data service controller according to the service start call, where the data service request carries the service option information SO.  The method according to claim 7, wherein the establishment request comprises a service parameter identifier, a terminal identifier, the data service controller address, and service option information SO;  The data service service node determines that the terminal initiates the handover to the second network by the first network, specifically:  Determining, by the service parameter identifier, the terminal identifier, the data service controller address, and the service option information SO, that the terminal initiates a handover by the first network to the second network.  10. The method according to claim 9, wherein the establishment request further comprises charging information, the charging information comprising establishing charging form setup information and star information for starting charging in the charging form.  The method according to claim 10, wherein the method further comprises: The data service controller interacts with the data service service node to release the terminal in the office Said A 10 link in the first network;  The data service controller interacts with the access device of the first network, and releases the A8 link of the terminal in the first network.  The method according to any one of claims 8-11, wherein the first network is an EV DO network, and the second network is a CDMA IX network, and the service option information SO is 33, Said that the service origination is a call from a CDMA IX network; or  The first network is a CDMA IX network, and the second network is an EV DO network, and the service option information SO is 59, indicating that the service origination call is a call from the EV DO network.  13. A method for processing a data service link, the method comprising:  The access device of the first network receives a service request message from a data service controller, where the service request message carries terminal information;  If the first network determines that the terminal is a dual mode terminal and the terminal is not in the first network, the service request message is forwarded to the access device of the second network to query the status of the terminal;  Receiving the service status information of the access device from the second network, and forwarding the service status information to the data service controller, where the data service controller is configured to determine, according to the service status information, the terminal When the voice activation state of the second network is in progress, the terminal transits the data service link state of the first network to the sleep state.  The method according to claim 13, wherein before the EV DO network access device receives the service request message from the data service controller, the method further comprises:  The data service controller receives packet data of the terminal from a data service service node;  Sending a service request message to the access device of the first network, triggering reactivation of the terminal in the access device of the first network.  15. A data service controller, comprising:  a receiving unit, configured to receive a request message initiated by the terminal to switch to the second network; a processing unit, configured to send, according to the request message, an update request to a data service service node, to request the data service service node to update an A10 link of the terminal in the first network to an A10 link of the second network ; The receiving unit is further configured to receive a response message from the data service serving node, and the connection establishing unit is configured to establish, according to the response message, a link with the second network of the second network.  16. The data service controller of claim 15 wherein:  The processing unit is further configured to carry the charging information in the update request, to request the data service serving node to stop charging the data service of the terminal in the first network, and start to be in the terminal Charging of data services in the second network.  17. A data service service node, comprising:  a receiving unit, configured to receive a setup request from a data service controller, where the setup request includes a service parameter identifier, a terminal identifier, the data service controller address, and service option information SO, and a determining unit, configured to use, according to the service parameter The identifier, the terminal identifier, the data service controller address, and the service option information SO determine whether the terminal initiates a handover to the second network by the first network;  And an establishing unit, configured to establish an A10 link with the second network after the determining unit determines that the terminal initiates a handover to the second network by the first network.  18. A data service controller, comprising:  a receiving unit, configured to receive packet data from a terminal of the data service serving node, and a triggering unit, configured to send, according to the packet data of the terminal received by the receiving unit, a service request message to an access device of the first network, triggering Reactivation of the terminal in an access device of the first network;  The receiving unit is further configured to receive service status information of an access device from the first network;  a processing unit, configured to determine, according to the service status information, a service status of the terminal, if the terminal receives a voice activation status of the second network, the terminal is in a data service of the first network The link state transitions to the sleep state.  A communication system, comprising: a data service controller, wherein the data service controller is communicably connected to the first network, the second network, and the data service service node, wherein: The data service controller is configured to receive, by the terminal, a handover initiated by the second network Transmitting a request message of the second network to the data service service node according to the request message, and requesting the data service service node to update the A10 link of the terminal in the first network to the first An A10 link of the second network; receiving a response message from the data service service node, establishing an A8 link with the second network for the terminal.  20. A communication system, comprising: a data service controller, wherein the data service controller is communicably coupled to the first network, the second network, and the data service service node, wherein:  a data service controller, configured to receive a request message that the terminal initiates handover to the second network by using the second network, send a setup request to the data service service node according to the request message, and receive the data service service node from the data service service node. a response message, establishing, for the terminal, an A8 link with the second network;  The data service service node is configured to establish, according to the establishment request, that the terminal initiates a handover to the second network by using the first network, where the terminal establishes an A10 link in the second network, where The data service controller sends a response message.  A communication system, comprising: a data service controller, wherein the data service controller is communicably connected to the first network and the data service monthly service node, wherein:  The data service controller receives the packet data of the terminal from the data service serving node, and sends a service request message to the access device of the first network, triggering reactivation of the terminal in the access device of the first network, Receiving service state information of the access device from the first network, and determining, according to the service state information, that if the terminal is in a voice activated state of the second network, the data service link of the terminal in the first network is The state transitions to the sleep state.