WO2013033914A1 - 单信道语音呼叫连续性srvcc切换方法和设备 - Google Patents

单信道语音呼叫连续性srvcc切换方法和设备 Download PDF

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Publication number
WO2013033914A1
WO2013033914A1 PCT/CN2011/079517 CN2011079517W WO2013033914A1 WO 2013033914 A1 WO2013033914 A1 WO 2013033914A1 CN 2011079517 W CN2011079517 W CN 2011079517W WO 2013033914 A1 WO2013033914 A1 WO 2013033914A1
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WO
WIPO (PCT)
Prior art keywords
handover
network device
handover request
information
target side
Prior art date
Application number
PCT/CN2011/079517
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English (en)
French (fr)
Inventor
于益俊
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180001914.4A priority Critical patent/CN103168494B/zh
Priority to PCT/CN2011/079517 priority patent/WO2013033914A1/zh
Publication of WO2013033914A1 publication Critical patent/WO2013033914A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
    • H04W36/00226Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]

Definitions

  • the embodiments of the present invention relate to the field of mobile communications technologies, and in particular, to a single channel voice call continuity SRVCC switching method and device. Background technique
  • E-UTRAN Evolved Universal Mobile Telecommunication System Territorial Radio Access Network
  • EPC Evolved Packet Core Network
  • EPS Evolved Packet System
  • IP Internet Protocol
  • IMS Multimedia Subsystem
  • GSM Global System of Mobile communication
  • EDGE Enhanced Data Rate for GSM Evolution
  • GERAN GSM/EDGE Radio Access Network
  • UMTS Universal Mobile Telecommunications System
  • UTRAN Universal Mobile Telecommunications System
  • HSPA High Speed Packet Access
  • IMS Circuit Switched
  • SRVCC Single Radio Voice Call Continuity
  • the target side supports HSPA's GPRS service GPRS branch
  • the Mobility Management Entity (MME) of the Serving GPRS Support Node (SGSN) or E-UTRAN may obtain the source-side mobile switching center server (MSC Server) or the mobile switching center/visiting location respectively.
  • MME Mobility Management Entity
  • RNC target side radio network controller
  • eNodeB target side evolved base station
  • the embodiment of the invention provides a single channel voice call continuity SRVCC switching method and device to ensure smooth handover of the SRVCC.
  • an embodiment of the present invention provides a single channel voice call continuity SRVCC switching method, including:
  • CS to PS handover request includes first information
  • PS to PS handover request includes The second information, the first information or the second information is used to indicate a handover type initiated by the source side access network device during the user equipment moving from the source side network to the target side network;
  • an embodiment of the present invention further provides a core network device, including:
  • a receiver configured to receive a circuit switched domain CS to a packet switched domain sent by a source side core network device
  • the CS to PS handover request including the first Information
  • the PS to PS handover request includes second information, where the first information or the second information is used to indicate that the source side access network device initiates in the process of moving the user equipment from the source side network to the target side network.
  • a processor configured to perform CS to PS handover and/or PS to PS handover with the target side access network device according to the handover type indicated by the first information or the second information;
  • a transmitter configured to return a handover request response to the source side core network device.
  • An embodiment of the present invention further provides an access network device, including:
  • a processor configured to perform, according to the first information or the second information, the type of handover initiated by the source side access network device in the process of moving the user equipment from the source side network to the target side network, and perform circuit switching with the target side core network device a domain CS to a packet switched domain PS handover and/or a PS to PS handover; wherein the first information is included in a CS to PS handover request sent by the source side core network device to the target side core network device, where The second information is included in the PS to PS handover request sent by the source side core network device to the target side core network device.
  • the switching request sent by the source-side access network device to the source-side core network device includes information indicating the handover type, and the source side
  • the information that the core network device sends the CS to PS handover request and/or the PS to PS handover request to the target side core network device includes the information, so that the target side core network device and the target side access network device perform corresponding handover according to the information.
  • FIG. 1 is a flowchart of an embodiment of an SRVCC handover method provided by the present invention
  • 2 is a flowchart of still another embodiment of an SRVCC handover method according to the present invention
  • FIG. 3 is a flowchart of another embodiment of an SRVCC handover method according to the present invention
  • FIG. 4 is still another embodiment of an SRVCC handover method provided by the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of a core network device according to the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of an access network device according to the present invention.
  • FIG. 7 is a schematic structural diagram of still another embodiment of an access network device according to the present invention.
  • FIG. 8 is a schematic structural diagram of another embodiment of an access network device according to the present invention. detailed description
  • FIG. 1 is a schematic flowchart of an embodiment of an SRVCC switching method according to the present invention. As shown in FIG. 1, the method includes:
  • S101 Receive a circuit switched domain CS to a packet switched domain PS handover request and/or a PS to PS handover request sent by the source side core network device, where the CS to PS handover request includes the first information, and the PS to PS handover request includes the second.
  • the first information or the second information is used to indicate a type of handover initiated by the source side access network device during the user equipment moving from the source side network to the target side network;
  • S102 Perform CS-to-PS handover and/or PS-to-PS handover by interacting with the target side access network device according to the handover type indicated by the first information or the second information.
  • the executor of the above steps is the core network device of the target side network, and may be the SGSN in the UTRAN network supporting the HSPA on the target side, or the network device such as the MME in the E-UTRAN network.
  • the target side access network device involved in the embodiment of the present invention may be specifically in the target side network.
  • Network devices such as RNC or eNodeB.
  • the source-side core network device in the embodiment of the present invention may specifically be a mobile switching center server (MSC Server) or a mobile switching center/visiting location register (MSC/VLR) of the source side network, or may be a network such as a source side SGSN. device.
  • the MSC Server or the MSC/VLR that can send the CS to the PS handover request to the target side core network device may be the source side SGSN that sends the PS to PS handover request to the target side core network device.
  • the embodiment of the present invention is applicable to a user equipment UE that is performing a CS service and/or a PS service.
  • the source side access network device accessed by the UE for example: a base station controller (Base: A CS to PS handover procedure initiated by a network device such as a Station Controller, BSC or RNC, and/or a PS to PS handover procedure initiated by a source side access network device (eg, BSC or RNC).
  • Base A CS to PS handover procedure initiated by a network device such as a Station Controller, BSC or RNC
  • a PS to PS handover procedure initiated by a source side access network device eg, BSC or RNC.
  • the UE that is performing the CS voice service moves from the network such as GERAN or UTRAN to the HSPA/UTRAN network that supports IMS voice, or moves to the E-UTRAN network.
  • the access network on the source side The device may initiate an SRVCC handover process, specifically: the access network device on the source side may send a handover request to the core network device MSC Server or MSC/VLR on the source side, so that the core network device MSC Server or MSC/VLR on the source side
  • the target side core network device SGSN or MME sends the CS to PS handover request, and performs CS to PS handover processing.
  • the PS to PS handover process may be performed at the same time, including: The network device SGSN sends a handover request, so that the core network device SGSN on the source side sends the PS to PS handover request to the target side core network device SGSN or MME, and performs PS to PS handover processing.
  • the network device SGSN sends a handover request, so that the core network device SGSN on the source side sends the PS to PS handover request to the target side core network device SGSN or MME, and performs PS to PS handover processing.
  • the UE may only exist in progress. If the PS service of the line does not exist in the ongoing CS voice service, in this case, the access network device on the source side only initiates the handover of the PS to the PS, including: The core network device SGSN of the side sends a handover request, so that the core network device SGSN on the source side initiates a PS to PS handover request to the target side core network device SGSN or MME, and performs a PS to PS handover process.
  • the target side core network device SGSN or MME may only receive the CS to PS handover request sent by the source side core network device; or the target side core network device SGSN or MME may receive the source side core network device and send the The CS to PS handover request and the PS to PS handover request sent by the source side core network device; or, the target side core network device SGSN or MME may only receive the PS to PS handover request sent by the source side core network device.
  • the source side access network device is the initiator of the SRVCC handover process, so that the target side core network device and/or the target side access network device can learn the SRVCC initiated by the source side access network device.
  • the side access network device may include the first information in the handover request sent to the source side core network device MSC Server or the MSC/VLR, and the first information indicates that the source side access network device moves from the source side network to the target in the UE. The type of switch initiated during the side network process.
  • the first information may be set to different identifiers to indicate that the initiated handover type is CS to PS handover, or CS to PS handover and PS to PS handover; similarly, the source side access network device may be sent to the source side core.
  • the handover request of the network device SGSN includes second information, and the second information indicates the handover type initiated by the source-side access network device during the UE moving from the source-side network to the target-side network. Similar to the first information, the second information can also be set to different identifiers to indicate that the type of handover initiated is PS to PS handover, or CS to PS handover and PS to PS handover.
  • the source side core network device may initiate a CS to PS handover request to the target side core network device. And including the first information in the foregoing CS to PS handover request;
  • the source side core network device may initiate a PS to PS handover request to the target side core network device, and the second information is It is included in the above PS to PS switching request.
  • the coordinated handover operation can be performed by the target side core network device. Specifically: after receiving the CS to PS handover request or the PS to PS handover request sent by the source side core network device, the target side core network device may perform the first information or the PS to PS handover request included in the CS to PS handover request. The second information included in the network determines the type of handover initiated by the source side access network device during the UE moving from the source side network to the target side network. If the target side core network device determines, by using the first information or the second information, that the source side access network device initiates a CS to PS handover and a PS to PS handover, the target side core network device may wait until the source side core network device MSC Server is received.
  • the handover request is sent to the target-side access network device to enable the target-side access network.
  • the device performs CS to PS switching and PS to PS switching.
  • the target side core network device After the target side core network device receives the CS to PS handover request or the PS to PS handover request, if the target side core network device according to the first information included in the CS to PS handover request or the second included in the PS to PS handover request The information indicates that the source side access network device initiates a CS to PS handover only when the UE moves from the source side network to the target side network, or only initiates a PS to PS handover, and the target side core network device can immediately connect to the target side.
  • the network access device sends a handover request to enable the target side access network device to perform CS to PS handover or PS to PS handover.
  • the operation of coordinating handover may also be performed by the target side access network device.
  • the target side core network device may directly send a handover request including the first information to the target side access network device; similarly, after receiving the PS to PS handover request, the target side core network device receives the PS to PS handover request.
  • the handover request including the second information may be directly sent to the target side access network device.
  • the target side access network device may determine, according to the first information or the second information received, the source side access network device in the process of moving the UE from the source side network to the target side network. The type of switch initiated.
  • the target side access network device may wait until receiving the CS to PS handover and the PS to PS handover sent by the target side core network device. After the handover request, CS to PS handover and PS to PS handover are performed.
  • the target side access network device determines, according to the previously received first information or the second information, the handover type initiated by the source side access network device in the process of the UE moving from the source side network to the target side network includes only CS to PS. Switching, or including only PS to PS switching, the target side access network device may immediately perform a CS to PS handover or a PS to PS handover after receiving a handover request including the first information or the second information.
  • the handover response is returned to the target side core network device, and the target side core network device returns a CS to PS handover request response and/or a PS to PS handover request to the source side core network device.
  • the source side core network device sends a CS to PS handover command and/or a PS to PS handover command to the source side access network device.
  • the CS-to-PS handover request and/or the PS-to-PS handover request received by the target-side core network device from the source-side access network device includes information indicating the handover type, so that the target-side core network is configured.
  • the device and the target side access network device perform corresponding handover according to the information to ensure smooth handover of the SRVCC.
  • FIG. 2 is a flowchart of still another embodiment of an SRVCC handover method according to the present invention. As shown in FIG. 2, the method includes:
  • the source side access network device determines to initiate a circuit switched domain CS to a packet switched domain to the source side core network device according to the service condition of the user equipment and/or whether the source side network supports the dual transmission mode DTM.
  • the source side access network device sends a sixth handover request and/or a seventh handover request to the source side core network device, where the sixth handover request is used to enable the source side core network device to send a CS to PS handover request to the target side core network device. a seventh handover request to send the source side core network device to the target side core network device
  • the sixth handover request includes the first information
  • the seventh handover request includes the second information
  • the CS to PS handover request includes the first information
  • the PS to PS handover request includes the second information, where the first information or the second information is used to indicate that the source side access network device moves from the source side network to the target side network in the user equipment.
  • the type of switch initiated during the process is used to indicate that the source side access network device moves from the source side network to the target side network in the user equipment.
  • the main body of the above steps is the source-side access network device, which may be a network device such as a BSC or an RNC in the source network.
  • the source-side access network device may be a network device such as a BSC or an RNC in the source network.
  • the source-side core network device in the embodiment of the present invention may be an MSC Server or an MSC/VLR of the source-side network, or a network device such as an SGSN on the source side.
  • the source side core network device that receives the sixth handover request may be the source side MSC Server or the MSC/VLR, and the source side core network device that receives the seventh handover request may be the source side SGSN.
  • the target-side core network device in the embodiment of the present invention may be an SGSN in the UTRAN network supporting the HSPA on the target side, or a network device such as an MME in the E-UTRAN network.
  • the target side access network device in the embodiment of the present invention may be a network device such as an RNC or an eNodeB in the target side network.
  • the embodiment of the present invention is applicable to a CS to PS handover process initiated by a source-side access network device accessed by a UE in a process of moving from one network to another in a user equipment UE that is performing a CS service and/or a PS service. And/or a PS to PS handover procedure initiated by the source side access network device.
  • the source side access network device determines to initiate the circuit switched domain CS to the packet switched domain PS handover and/or the PS to PS handover to the source side core network device according to the service condition of the user equipment and/or whether the source side network supports the dual transmission mode DTM. .
  • the service status of the user equipment may be the type of service that the user equipment is performing, for example, the UE has an ongoing CS service (for example, a CS voice call is in progress), or the UE has an ongoing PS service (for example: ongoing Web browsing), or the UE has both the ongoing CS service and the PS service.
  • the source side access network device can determine the type of handover initiated according to the service condition of the UE.
  • the source side access network device determines whether the UE is performing CS service and/or PS service, and may have a CS connection (such as a lu-CS connection) and/or a PS connection (such as a lu-PS connection) according to the source side access network device. To judge. In addition, if the source side The network is a GERAN network, and the source side access network device can also determine the type of handover initiated according to whether the source side network supports the DTM.
  • the access network device on the source side may send a sixth handover request to the core network device MSC Server or the MSC/VLR on the source side in order to improve the voice service experience of the UE.
  • the core network device MSC Server or MSC/VLR on the source side initiates a CS to PS handover request process to the target side core network device SGSN or MME; if the UE of the CS voice service is in progress, the PS service is also being performed (for example, ongoing Data download), when the source side network supports the DTM, or the source side network is the UTRAN network, the source side access network device initiates the sixth handover request to enable the source side core network device MSC Server or MSC/VLR.
  • the target-side core network device SGSN or the MME may also initiate a seventh handover request to the source-side core network device SGSN, so that the source-side core network device SGSN is directed to the target-side core network.
  • the device SGSN or MME initiates a PS to PS handover request process.
  • the source network access network device only The seventh handover request is initiated to the core network device SGSN on the source side, so that the core network device SGSN on the source side initiates a PS to PS handover request process to the target side core network device SGSN or MME.
  • the source side access network device is the initiator of the SRVCC handover process, so that the target side core network device and the target side access network device can learn the SRVCC handover process initiated by the source side access network device.
  • the network access device may include the first information in the sixth handover request sent to the source network device MSC Server or the MSC/VLR, where the first information indicates that the source side access network device moves from the source side network to the target in the UE. The type of switch initiated during the side network process.
  • the first information can be set to a different identifier to indicate the type of handover initiated.
  • the source side access network device may include second information in the seventh handover request sent to the source side core network device SGSN, by using the second The information indicates the type of handover initiated by the source side access network device during the UE moving from the source side network to the target side network.
  • the second information may also be set to different identifiers to indicate that the type of handover initiated is PS to PS handover, or CS to PS handover and PS to PS handover.
  • the source-side core network device may initiate a CS-to-PS handover request to the target-side core network device, and the A message is included in the CS to PS handover request;
  • the source side core network device may initiate a PS to PS handover request to the target side core network device, and the first The second information is included in the PS to PS handover request.
  • the switching request sent by the source side access network device to the source side core network device includes information indicating the handover type, and the source side core network device sends the CS to PS handover request to the target side core network device.
  • the information is included in the PS and PS handover request, so that the target side core network device and the target side access network device perform corresponding handover according to the information to ensure smooth handover of the SRVCC.
  • FIG. 3 is a flowchart of another embodiment of an SRVCC handover method according to the present invention.
  • an operation of coordinated handover is performed by a target side access network device.
  • the source side access network device may be a BSC or an RNC
  • the source side core network device may be an MSC Server or an MSC/VLR and/or an SGSN
  • the target side access network device may be an RNC or an eNodeB
  • the target side core network device may be Is the SGSN or MME.
  • the method specifically includes:
  • the source side BSC or the RNC decides to initiate the SRVCC handover, and sends a sixth handover request to the source MSC Server or the MSC/VLR, where the sixth handover request includes the first information.
  • the sixth handover request may be a Handover Required message or a Relocation Required message.
  • the target side access network device RNC or eNodeB to know whether the SRVCC handover procedure initiated by the source side access network device includes only CS to PS handover, or both CS to PS handover and PS to PS handover, to perform coordinated handover operation.
  • the source side BSC or the RNC may include the first information in the Handover Required or Relocation Required message, and the first information indicates the type of handover initiated by the source side BSC or the RNC in the process of the UE moving from the source side network to the target side network.
  • the first information may be included in a container cell included in the sixth handover request message, or the first message may be included in a single cell in the sixth handover request message.
  • the container cell included in the sixth handover request message may be, the old base station subsystem (BSS) to the old base station subsystem information (old BSS to new BSS information), or the source side RNC to the target side RNC. Source RNC to Target RNC Transparent Container cell, etc.
  • BSS base station subsystem
  • old BSS old BSS to new BSS information
  • source side RNC to the target side RNC.
  • Source RNC to Target RNC Transparent Container cell etc.
  • the source side BSC or the RNC sends a seventh handover request to the source side SGSN, where the seventh handover request includes the second information.
  • the seventh handover request may be a Handover Required message or a Relocation Required message.
  • the source side BSC or the RNC may also include the second information, the type of handover initiated in the process, in the Handover Required or Relocation Required message.
  • the second information may be included in a container cell included in the seventh handover request message, or the second information may also be included in a single cell of the seventh handover request message.
  • the container cell included in the seventh handover request message may be: a source side BSS to a target BSS transparent container (Source BSS to Target BSS Transparent Container) cell, or a source side RNC to a target side RNC transparent container (Source RNC to Target RNC) Transparent Gontsinsr) Cells, etc.
  • the source side BSC or the RNC may be based on the service condition of the user equipment (for example, only the CS service exists, or only the PS service exists, or the ongoing CS and PS services exist), and/or the source side network is Supporting the DTM, determining to initiate a CS to PS handover and/or a PS to PS handover to the source side core network device.
  • the service condition of the user equipment for example, only the CS service exists, or only the PS service exists, or the ongoing CS and PS services exist
  • the source side network is Supporting the DTM, determining to initiate a CS to PS handover and/or a PS to PS handover to the source side core network device.
  • S301a is performed; if the source side BSC or the RNC determines to initiate only the PS to PS handover, then only the handover in this embodiment is In the embodiment, both S301 a and S301 b are executed, and there is no timing relationship between S301a and S301 b.
  • S301 a may be executed first, or S301 b may be executed first.
  • the naming and expression forms of the first information and the second information are not specifically limited.
  • the first information and the second information may be named, for example: "rSRVCC type", "rSRVCC indication” or
  • the first information or the second information includes a CS indication and/or a PS indication
  • the CS indication indicates that the handover type includes a CS to PS handover
  • the PS indication indicates that the handover type includes a PS to PS handover.
  • the source side BSC or the RNC may include only the CS indication in the first message, and the first message may be, for example: "CS only", “CS only rSRVCC” or The "CS only handover” or the like is used to indicate; if the source side BSC or the RNC determines to initiate only the PS to PS handover, the source side BSC or the RNC may include only the PS indication in the second message, and the second message may be, for example: " PS only", “PS only rSRVCC” or "PS only handover", etc.; if source side The BSC or the RNC determines that both the CS to the PS handover and the PS to the PS handover are initiated.
  • the source side BSC or the RNC may include the CS indication and the PS indication in the first message, for example: "CS and PS"
  • the source side BSC or the RNC may include a CS indication and a PS indication in the second message, and the second message may be, for example: "CS and PS" ,,, "CS and PS rSRVCC" or "CS and PS handover" are used to indicate.
  • the first information or the second message may also be used by the source side BSC or the RNC when switching, and the number of connections between the source side MSC Server or the MSC/VLR and the source side SGSN, that is, switching
  • the connection value indicates that the handover connection value is 1 indicating that the source side BSC or RNC is only connected to the CS of the source side MSC Server or MSC/VLR or to the PS of the source side SGSN, and the handover type includes CS to PS handover or PS to PS handover;
  • the handover connection value of 2 indicates that the source side BSC or RNC has a CS connection with the source side MSC Server or MSC/VLR and a PS connection with the source side SGSN, and the handover types include CS to PS handover and PS to PS handover.
  • the source side MSC Server or the MSC/VLR sends a CS to PS handover request, for example, a CS to PS Handover Request message, to the target side SGSN or MME, where the CS to PS handover request includes the first information.
  • a CS to PS handover request for example, a CS to PS Handover Request message
  • the CS to PS handover request includes a container cell provided by the source side BSC or the RNC, that is, an old BSS to new BSS information cell, or a Source RNC to Target RNC Transparent Container cell.
  • the source side MSC Server or MSC/VLR may include the first information in the above-mentioned container cell of the CS to PS handover request or in a separate cell of the CS to PS handover request.
  • the source SGSN sends a PS to PS handover request to the target SGSN or the MME, for example, a Forward Relocation Request message, where the PS to PS handover request includes the second information.
  • the foregoing PS to PS handover request includes a container cell provided by the source side BSC or the RNC, that is, a Source BSS to Target BSS Transparent Container cell, or a Source. RNC to Target RNC Transparent Container cell, etc.
  • the source side SGSN may include the second information in the above-mentioned container cell of the PS to PS handover request or in a separate cell of the PS to PS handover request.
  • S302a corresponds to S301a
  • S302b corresponds to S301b. If S301a is not executed in this embodiment, S302a is not executed; if S301b is not executed in this embodiment, S302b is not executed. In addition, there is no timing relationship between S302a and S302b.
  • the target side SGSN or the MME sends a first handover request to the target RNC or the eNodeB, where the first handover request includes the first information.
  • the first handover request may be a Relocation Request message or a Handover Request message.
  • the source RNC to Target RNC Transparent Container cell or the Source to Target Transparent Container cell of the Relocation Request or Handover Request message includes the container cell information provided by the source side core network device, that is, the old BSS to new BSS information cell. Or Source RNC to Target RNC Transparent Container cell.
  • Target side SGSN or MME can use Relocation Request or Handover
  • the Source RNC to Target RNC Transparent Container cell or the Source to Target Transparent Container cell of the Request message contains the first information.
  • step 301a when the source side BSC or the RNC includes the foregoing first information in the container cell in the sixth handover request, the target side SGSN or MME includes the first handover request message.
  • the first information is included in the container cell; when the source side BSC or the RNC includes the first information in an independent cell in the sixth handover request in step 301a, the target side SGSN or MME
  • the first information may be included in the above-mentioned container cell in the first handover request sent to the target side RNC or eNodeB or in another independent cell.
  • the target side SGSN or the MME sends a second handover request to the target side RNC or the eNodeB, where the second handover request includes the second information.
  • the second handover request message may be a Relocation Request message or a Handover Request message.
  • the Source RNC to Target RNC Transparent Container cell or the Source to Target Transparent Container cell in the Relocation Request or Handover Request message includes the container cell information provided by the source side core network device, that is, the Source BSS to Target BSS Transparent Container cell. , or Source RNC to Target RNC Transparent Container cell.
  • the target side SGSN or MME may use the Source RNC to Target RNC Transparent Container cell or the Source to Target Transparent Container cell of the Relocation Request or Handover Request message to include the second information.
  • the target side SGSN or MME includes the second handover request message.
  • the second information is included in the container cell; when the source side BSC or the RNC includes the second information in a separate cell in step 301b, the target side SGSN or MME may use the second information.
  • the information is contained in the above-mentioned container cell or another independent cell in the second handover request sent to the target side RNC or eNodeB.
  • S303a corresponds to S302a
  • S303b corresponds to S302b. If S302a is not executed in this embodiment, S303a is not executed; if S302b is not executed in this embodiment, S303b is not executed. In addition, there is no timing relationship between S303a and S303b.
  • the target side RNC or the eNodeB may determine, according to the first information or the second information, that the source side BSC or the RNC only initiates the CS to PS switching, whether to initiate only PS to PS switching, or to initiate both CS to PS switching and PS to PS switching.
  • the target side RNC or eNodeB may wait until the second handover request or the first handover request arrives later, and then perform the S304CS to PS handover. And the operation of PS to PS switching. If the source side BSC or the RNC only initiates a CS to PS handover, or only initiates a PS to PS handover, the target side RNC or eNodeB may directly perform the CS to PS handover of S304 after receiving the first handover request or the second handover request. Or PS to PS switching operation.
  • the target side SGSN or the MME may include the first handover request in the first handover request, because the target side RNC or the eNodeB cannot distinguish between the first handover request and the second handover request received in the two steps S303a and S303b.
  • An indication indicating that the first indication request is used to request a CS to PS handover the first indication identifier may be expressed in the form of, for example, "CS"; similarly, the target side SGSN or the MME may also be in the second handover request.
  • the second indication identifier is included, and the second indication identifier indicates that the second handover request is used to request a PS to PS handover, and the first indication identifier may be expressed in the form of, for example, "PS".
  • the target side RNC or the eNodeB performs CS to PS switching and/or PS to PS switching according to the switching type indicated by the first information or the second information.
  • the target side RNC or the eNodeB performs a CS to PS handover
  • the target side RNC or eNodeB performs PS to PS handover
  • the target side RNC or the eNodeB needs to wait for two messages of the first handover request and the second handover request to be received.
  • the first handover request may include a first indication identifier; and the second handover request may include a second indication identifier.
  • the target side RNC or the eNodeB returns a first handover request response to the target side SGSN or MME.
  • the target side RNC or the eNodeB returns a second handover request response to the target side SGSN or MME.
  • the target side RNC or the eNodeB If the target side RNC or the eNodeB receives only the first handover request, the target side RNC or the eNodeB returns a first handover request response to the target side SGSN or the MME, that is, only S305a is performed; If the target side RNC or eNodeB receives only the second handover request, the target side RNC or eNodeB returns a second handover request response to the target side SGSN or MME, that is, only S305b is performed; if the target side RNC or eNodeB receives the first handover If the second handover request is received, the target RNC or the eNodeB returns a first handover request response and a second handover request response to the target SGSN or the MME, that is, both S305a and S305b are executed, and there is no S305a and S305b. For the timing relationship, you can execute S305a first or S305b first.
  • the first handover request response or the second handover request response may be a Relocation Request Acknowledge message or a Handover Request Acknowledge message.
  • the first handover request response returned by the target side RNSN or the eNodeB to the target SGSN or the MME may further include a third indication identifier, where the third indication identifier indicates the first handover The request response is for responding to a CS to PS handover, and the third indication identifier may be expressed in the form of, for example, "CS";
  • the second handover request response returned by the target-side RNC or the eNodeB to the target-side SGSN or the MME may further include a fourth indication identifier, where the fourth indication identifier indicates that the second handover request response is used to respond.
  • the fourth indicator identification may be expressed in the form of, for example, "PS".
  • the target side SGSN or the MME sends a CS to PS handover request response, such as a CS to PS HO Response message, to the source side MSC Server or MSC/VLR.
  • a CS to PS handover request response such as a CS to PS HO Response message
  • the target side SGSN or the MME sends a PS to PS handover request response to the source side SGSN, for example, a Forward Relocation Response message.
  • S306a corresponds to S302a. If S302a is executed, S306a is executed; S306b corresponds to S302b, and if S302b is executed, S306b is executed. There is no timing relationship between S306a and S306b.
  • the source side MSC Server or the MSC/VLR sends a CS to PS handover command (which may be a Handover Command or a Relocation Command message) to the source side BSC or the RNC.
  • a CS to PS handover command (which may be a Handover Command or a Relocation Command message)
  • the source side SGSN sends a PS to PS handover command (which may be a Handover Command or a Relocation Command message) to the source side BSC or the RNC.
  • S307a corresponds to S306a. If S306a is executed, S307a is executed; S307b corresponds to S306b, and if S306b is executed, S307b is executed. There is no timing relationship between S307a and S307b.
  • the source side BSC or the RNC sends a handover command (Handover Command) to the UE.
  • a handover command Handover Command
  • the UE performs a handover from the source side network to the target network, and sends a Handover Confirm message to the target side RNC or the eNodeB.
  • the target side RNC or eNodeB sends a Handover Notify message to the target side SGSN or MME.
  • the target side SGSN or the MME sends a CS to PS Handover Complete Notification message to the source MSC Server or the MSC/VLR.
  • S311b The target side SGSN or the MME sends a Forward Relocation Complete message or a Forward Relocation Complete Notification message to the source SGSN.
  • the source side MSC Server or the MSC/VLR sends a CS to PS Handover Complete Notification Acknowledge message to the target side SGSN or MME.
  • S312b The source side SGSN sends a forwarding reset completion confirmation to the target side SGSN or MME.
  • FIG. 4 is a flowchart of still another embodiment of an SRVCC handover method according to the present invention.
  • the difference between this embodiment and the previous embodiment is that the coordination is performed by the target side access network device in the previous embodiment.
  • Switching operation in this embodiment, the coordinated switching operation is performed by the target side core network device.
  • the source side access network device may be a BSC or an RNC
  • the source side core network device may be an MSC Server or an MSC/VLR, or an SGSN
  • the target side access network device may be an RNC or an eNodeB
  • the target side core network device may be SGSN or MME.
  • the method specifically includes:
  • the source side BSC or the RNC decides to initiate the SRVCC handover, and sends a sixth handover request to the source MSC Server or the MSC/VLR, where the sixth handover request includes the first information.
  • the source side BSC or the RNC sends a seventh handover request to the source side SGSN, where the seventh handover request includes the second information.
  • the source side MSC Server or the MSC/VLR sends a CS to PS handover request, for example, a CS to PS Handover Request message, to the target side SGSN or MME, where the CS to PS handover request includes the first information.
  • a CS to PS handover request for example, a CS to PS Handover Request message
  • the source ⁇ ' JSGSN sends a PS to PS handover request to the target JSGSN or the MME, and the Forward Relocation Request message is forwarded, and the PS to PS handover request includes the second information.
  • the target side SGSN or the MME sends a third handover request, or a fourth handover request, or a fifth handover request to the target RNC or the eNodeB.
  • the difference between this embodiment and the previous embodiment is that, in the previous embodiment, as long as the target side SGSN or MME receives the CS to PS handover request sent by the source side MSC Server or the MSC/VLR, or the PS sent by the source side SGSN
  • the PS handover request sends a handover request to the target side RNC or eNodeB, and the target side RNC or eNodeB coordinates the handover.
  • the coordinated handover operation is performed by the target side SGSN or the MME. Specifically: if the information included in the CS-to-PS handover request or the PS-to-PS handover request received by the target-side SGSN or the MME indicates that the handover type includes CS-to-PS handover and PS-to-PS handover, then in S403, the target-side SGSN Or the MME receives a PS to PS handover request that arrives later or After the CS to PS handover request, the third handover request is sent to the target side RNC or the eNodeB, and the third handover request may be a Relocation Request message or a Handover Request message.
  • the third handover request message includes CS radio resource information included in the CS to PS handover request and PS radio resource information included in the PS to PS handover request.
  • the CS radio resource information is included in the CS container cell in the handover request sent to the source side MSC Server or the MSC/VLR by the source side BSC or the RNC, and further included in the CS sent to the target side SGSN or MME.
  • the CS container cell in the PS handover request the CS container cell may be an old BSS to new BSS information cell, or a Source RNC to Target RNC Transparent Container cell;
  • the PS radio resource information is included in the PS container cell in the handover request sent to the source side SGSN by the source side BSC or the RNC, and further includes the PS in the PS to PS handover request sent to the target side SGSN or MME.
  • the PS container cell may be a Source BSS to Target BSS Transparent Container cell, or a Source RNC to Target RNC Transparent Container cell.
  • the CS radio resource information and the PS radio resource information may be respectively included in two container cells of the third handover request, the container The cell may be a Source RNC to Target RNC Transparent Container sent to the target side RNC or a Source to Target Transparent Container container cell sent to the target side eNodeB.
  • the two container cells can be named, for example: CS Source RNC to Target RNC Transparent Container and PS Source RNC to Target RNC Transparent Container sent to the target side RNC; or CS Source to Target Transparent Container sent to the target side eNodeB.
  • PS Source to Target Transparent Container or named First RNC to Target RNC Transparent Container and Secondary Source RNC to Target RNC Transparent Container sent to the target side RNC; or First sent to the target side eNodeB Source to Target Transparent Container and Secondary Source to Target Transparent Contsiner.
  • the third switching request sent by the target side SGSN or the MME to the target side RNC or the eNodeB may further include a first information type identifier, where the first information type identifier is used to indicate the container cell included in the third handover request.
  • the CS radio resource information and the PS radio resource information are included, and the first information type identifier may be expressed in the form of, for example, "CS and PS".
  • the target-side SGSN or the MME may directly send the fourth handover request to the target-side RNC or the eNodeB.
  • the fourth handover request includes CS radio resource information included in the CS to PS handover request.
  • the target-side SGSN or the MME may directly send the information to the target-side RNC or the eNodeB.
  • a handover request where the fifth handover request includes PS radio resource information included in the PS to PS handover request;
  • the CS radio resource information is included in the source side BSC or RNC and is sent to the source side MSC.
  • the CS container cell in the handover request of the Server or MSC/VLR, and further included in the CS container cell in the CS to PS handover request sent to the target side SGSN or MME, the CS container cell may be, Old BSS to new BSS information cell, or Source RNC to Target RNC Transparent Container cell;
  • the PS radio resource information is included in the PS container cell in the handover request sent to the source side SGSN by the source side BSC or the RNC, and further includes the PS in the PS to PS handover request sent to the target side SGSN or MME.
  • the PS container cell may be a Source BSS to Target BSS Transparent Container cell, or a Source RNC to Target RNC Transparent Container cell.
  • the CS radio resource information may be included in the container cell of the fourth handover request, and the container cell may be named as: CS container cell (for example, the CS sent to the target side RNC) Source RNC to Target RNC Transparent Container ), or the first container cell, etc.
  • the fourth switching request sent by the target side SGSN/MME to the target side RNC/eNodeB may further include a second information type identifier, where the second information type identifier is used to indicate the container cell included in the fourth handover request.
  • the CS radio resource information is included, and the second information type identifier may be expressed in the form of, for example, "CS", and "CS" indicates that the CS radio resource information is included.
  • the PS radio resource information may be included in a container cell of the fifth handover request, and the container cell may be named as: a PS container cell (for example, the PS source to Target Transparent sent to the target side eNodeB. Container ), or second container cell, etc.
  • a PS container cell for example, the PS source to Target Transparent sent to the target side eNodeB. Container
  • second container cell etc.
  • the fifth handover request sent by the target side SGSN/MME to the target side RNC/eNodeB may further include a third information type identifier, where the third information type identifier is used to indicate the container cell included in the fifth handover request.
  • the PS radio resource information is included, and the third information type identifier may be expressed in the form of, for example, "PS", and the "PS" indicates that the PS radio resource information is included.
  • the target side RNC or the eNodeB performs CS to PS handover and PS to PS handover according to the first information type identifier and/or the CS container cell and/or the PS container cell included in the third handover request; or, the target side The RNC or the eNodeB performs the CS to PS handover according to the second information type identifier and/or the CS container cell included in the fourth handover request.
  • the target side RNC or the eNodeB identifies the third information type included in the fifth handover request. And/or PS container cells, for PS to PS switching.
  • the target side RNC or the eNodeB returns a third handover request response, or a fourth handover request response, or a fifth handover request response to the target side SGSN or the MME.
  • the third handover request response, the fourth handover request response, and the fifth handover request response may both be a Relocation Request Acknowledge message or a Handover Request Acknowledge message, and the Relocation Request Acknowledge or Handover Request Target RNC to Source RNC Transparent Container cell or Target to Source Transparent in Acknowledge message
  • PS radio resource information for example, a new BSS to old BSS information cell sent to the source side BSC, or a Target RNC to Source RNC Transparent Container cell sent to the source side RNC.
  • the above cell may also be named as different container cells that can distinguish between CS radio resource information and PS radio resource information in the manner described in step 403.
  • the CS to PS handover request response includes CS radio resource information sent by the target side RNC or eNodeB to the source side BSC or RNC, the CS The radio resource information is included in the CS container cell, for example: new BSS to old BSS information cell, or Target RNC to Source RNC Transparent Container cell.
  • the SGSN or MME sends a PS to PS handover request to the source 4 SGSN.
  • the response for example, forwards a Forward Relocation Response message.
  • the PS to PS handover request response includes PS radio resource information that is sent by the target side RNC or the eNodeB to the source side BSC or the RNC, and the PS radio resource information is included in the PS container cell, for example: Target BSS to Source BSS Transparent Container Cell, or Target RNC to Source RNC Transparent Container cell.
  • the source side MSC Server or the MSC/VLR sends a CS to PS switching command (which may be a Handover Command or a Relocation Command) to the source side BSC or RNC.
  • a CS to PS switching command (which may be a Handover Command or a Relocation Command) to the source side BSC or RNC.
  • the source side SGSN sends a PS to PS switching command (which may be a Handover Command or a Relocation Command) to the source side BSC or RNC.
  • a PS to PS switching command (which may be a Handover Command or a Relocation Command) to the source side BSC or RNC.
  • the source side BSC or the RNC sends a handover command (Handover Command) to the UE. 5409
  • the UE performs handover from the source 4 to the target network, and sends a handover acknowledgement message (Handover Confirm) to the target jRNC or the eNodeB.
  • the target side RNC or the eNodeB sends a handover acknowledgement message (Handover Notify) to the target side SGSN or the MME.
  • a handover acknowledgement message Handover Notify
  • the target side SGSN or the MME sends the CS to the source side MSC Server or the MSC/VLR to
  • the target side SGSN or the MME sends a Forward Relocation Complete message or a Forward Relocation Complete Notification message to the source SGSN.
  • the source side MSC Server or the MSC/VLR sends a CS to PS Handover Complete Notification Acknowledge to the target side SGSN or MME.
  • S412b The source side SGSN sends a Forward Relocation Complete Acknowledge message or a Forward Relocation Complete Notification Acknowledge message to the target side SGSN or the MME.
  • S406a-S412b is similar to the process of S306a-S312b in the previous embodiment. For details, refer to the related description in the previous embodiment.
  • the descriptions of the various embodiments are different, and the parts that are not detailed in an embodiment can be referred to the related descriptions of other embodiments.
  • a person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
  • FIG. 5 is a schematic structural diagram of an embodiment of a core network device according to the present invention. As shown in FIG. 5, the core network device includes: a receiver 11, a processor 12, and a transmitter 13;
  • the receiver 11 is configured to receive a circuit switched domain CS to a packet switched domain PS handover request and/or a PS to PS handover request sent by the source side core network device, where the CS to PS handover request includes the first information, and the PS to PS handover request
  • the second information is included, where the first information or the second information is used to indicate a type of handover initiated by the source side access network device during the user equipment moving from the source side network to the target side network;
  • the processor 12 is configured to perform CS to PS switching and/or PS to PS switching by interacting with the target side access network device according to the switching type indicated by the first information or the second information.
  • the transmitter 13 is configured to return a handover request response to the source side core network device.
  • the processor 12 may be specifically configured to: if the receiver 11 receives the CS to PS handover request, the control transmitter 13 sends the first handover request to the target side access network device.
  • the first handover request includes the first information; or, if the receiver 11 receives the PS to PS handover request, the control transmitter 13 sends a second handover request to the target side access network device, where the second handover request includes the second Information
  • the receiver 11 can also be configured to: the target side access network device returns a first handover request response and/or a second handover request response.
  • the first handover request sent by the sender 13 to the target side access network device may include a first indication identifier, where the first indication identifier indicates that the first handover request is used to request a CS to PS handover; and/or, the transmitter 13
  • the second handover request sent to the target side access network device may further include a second indication identifier, where the second indication identifier indicates that the second handover request is used to request the PS to PS handover.
  • the first handover request response received by the receiver 11 may include a third indication identifier, where the third indication identifier indicates that the first handover request response is used to respond to the CS to PS handover; and/or, the receiver 11 receives the
  • the second handover request response may further include a fourth indication identifier, where the fourth indication identifier indicates that the second handover request response is used to respond to the PS to PS handover.
  • the processor 12 may be further configured to: if the first information or the second information included in the CS to PS handover request or the PS to PS handover request received by the receiver 11 respectively, the handover type includes CS to PS After the handover and the PS to PS handover, the control transmitter 13 sends a third handover request to the target side access network device after the PS to PS handover request or the CS to PS handover request that arrives later, and the third handover request includes the CS handover request.
  • the CS radio resource information included in the PS handover request and the PS radio resource information included in the PS to PS handover request; the receiver 11 is further configured to: receive the third handover request response returned by the target side access network device.
  • the processor 12 is specifically configured to: if the first information included in the CS to PS handover request received by the receiver 11 indicates that the handover type includes a CS to PS handover, the control transmitter 13 sends the first to the target side access network device.
  • the fourth switching request includes the CS radio resource information.
  • the receiver 11 is further configured to: receive the fourth handover request response returned by the target side access network device; or, the processor 12 is specifically configured to: if the receiver 11 The second information included in the previously received PS to PS handover request indicates that the handover type includes a PS to PS handover, and then the control transmitter 13 sends a fifth handover request to the target side access network device, and the fifth handover request includes the PS.
  • the radio resource information is further configured to: receive a fifth handover request response returned by the target side access network device.
  • the CS radio resource information and the PS radio resource information sent by the transmitter 13 to the target side access network device are respectively included in the two container cells in the third handover request.
  • the third handover request sent by the sender 13 to the target side access network device further includes a first information type identifier, where the first information type identifier is used to indicate that the container cell included in the third handover request includes the CS radio resource.
  • Information and PS wireless resource information are used to indicate that the container cell included in the third handover request includes the CS radio resource.
  • the fourth switching request sent by the sender 13 to the target side access network device further includes a second information type identifier, where the second information type identifier is used to indicate the container cell included in the fourth switching request. Contains cs radio resource information; and/or,
  • the fifth switching request sent by the sender 13 to the target side access network device further includes a third information type identifier, where the third information type identifier is used to indicate that the container cell included in the fifth handover request includes PS radio resource information.
  • the first information or the second information includes a CS indication and/or a PS indication
  • the CS indication indicates that the handover type includes a CS to PS handover
  • the PS indication indicates that the handover type includes a PS to PS handover
  • the first information or the second information is represented by a handover connection value, where the first information switching connection value is 1 indicating that the user equipment has a CS connection, the handover type includes a CS to PS handover, and the second information switching connection value is 1 indicating that the user equipment has PS connection, the handover type includes PS to PS handover; the first information or the second information handover connection value of 2 indicates that the user equipment has a CS and PS connection, and the handover type includes CS to PS handover and PS to PS handover.
  • the core network device provided by the embodiment of the present invention is specifically a core network device of the target side network, and may be, for example, a network device such as an SGSN or an MME.
  • the core network device provided by the embodiment of the present invention corresponds to the single channel voice call continuity SRVCC switching method provided by the embodiment of the present invention, and is an execution device of the single channel voice call continuity SRVCC switching method, and the specific process of the method for performing the method may be See the method embodiment, and details are not described herein again.
  • the core network device provided in this embodiment includes the information indicating the handover type in the CS to PS handover request and/or the PS to PS handover request received by the source side access network device, so that the target side core network device and the target side are connected.
  • the network access device performs corresponding handover according to this information to ensure smooth handover of the SRVCC.
  • FIG. 6 is a schematic structural diagram of an embodiment of an access network device according to the present invention. As shown in FIG. 6, the method includes: a processor 21;
  • the processor 21 is configured to: perform, according to the first information or the second information, the source side access network device, in the process of moving the user equipment from the source side network to the target side network, and interact with the target side core network device to perform a circuit.
  • Switch domain CS to packet switched domain PS handover and/or PS to PS handover;
  • the first information is included in the CS to PS handover request sent by the source side core network device to the target side core network device
  • the second information includes the PS to PS handover request sent by the source side core network device to the target side core network device. in.
  • FIG. 7 is a schematic structural diagram of another embodiment of an access network device according to the present invention. As shown in FIG. 7, the method includes: a processor 21; further, a receiver 22 and a transmitter 23;
  • the receiver 22 may be configured to: receive a first handover request and/or a second handover request sent by the target side core network device, where the first handover request includes the first information, and the second handover request includes the first Two information;
  • the processor 21 may be specifically configured to: if the first information or the second information included in the first handover request or the second handover request received by the receiver 22 respectively indicates that the handover type includes CS to PS handover and PS To the PS handover, after the receiver 22 receives the second handover request or the first handover request that arrives later, the control transmitter 23 returns a first handover request response and a second handover request response to the target side core network device; or ,
  • the control transmitter 23 If the first information included in the first handover request received by the receiver 22 indicates that the handover type is CS to PS handover, the control transmitter 23 returns the first corresponding handover request to the target side core network device. a switch request response; or,
  • the control transmitter 23 If the second information included in the second handover request received by the receiver 22 indicates that the handover type is PS to PS handover, the control transmitter 23 returns the first corresponding handover request to the target side core network device. Second switch request response.
  • the receiver 22 may be further configured to: receive a third handover request sent by the target side core network device, where the third handover request includes CS radio resource information and a PS to PS included in the CS to PS handover request.
  • the PS radio resource information included in the handover request the processor 21 is further configured to: perform CS to PS handover and PS to PS handover, and control the transmitter 23 to return a third handover request response to the target side core network device; or
  • the receiver 22 is further configured to: receive a fourth handover request sent by the target side core network device, where the fourth handover request includes CS radio resource information; and the processor 21 is further configured to: perform CS to PS handover, And the control transmitter 23 returns a fourth handover request response to the target side core network device.
  • the receiver 22 is further configured to: receive a fifth handover request sent by the target side core network device, where the fifth handover request includes PS radio resource information.
  • the processor 21 is further configured to: perform a PS to PS handover, and control the transmitter 23 to return a fifth handover request response to the target side core network device.
  • the access network device provided by the embodiment of the present invention is specifically an access network device of the target side network, and may be, for example, a network device such as an RNC, an eNodeB, or a NodeB.
  • the access network device provided by the embodiment of the present invention corresponds to the single channel voice call continuity SRVCC handover method provided by the embodiment of the present invention, and is an execution device of the single channel voice call continuity SRVCC handover method, and the specific process of the execution method thereof
  • the access network device provided by the embodiment of the present invention corresponds to the single channel voice call continuity SRVCC handover method provided by the embodiment of the present invention, and is an execution device of the single channel voice call continuity SRVCC handover method, and the specific process of the execution method thereof
  • the access network device provided in this embodiment performs CS-to-PS handover and/or PS-to-PS handover with the target-side core network device according to the information indicating the handover type included in the handover request of the source-side core network device, and ensures the SRVCC. The switching went smoothly.
  • FIG. 8 is a schematic structural diagram of another embodiment of an access network device according to the present invention. As shown in FIG. 8, the method includes: a processor 31 and a transmitter 32;
  • the processor 31 is configured to determine to initiate a circuit switched domain CS to a packet switched domain PS switch and/or a PS to PS switch to the source side core network device according to the service condition of the user equipment and/or whether the source side network supports the dual transport mode DTM. ;
  • the transmitter 32 is configured to initiate a sixth handover request and/or a seventh handover request to the source side core network device, where the sixth handover request is used to enable the source side core network device to send a CS to PS handover request to the target side core network device, where Seven switching requests to enable the source side core network device to send a PS to PS handover request to the target side core network device;
  • the sixth handover request includes the first information
  • the seventh handover request includes the second information
  • the CS to PS handover request includes the first information
  • the PS to PS handover request includes the second information, where the first information or the second information is used to indicate that the source side access network device moves from the source side network to the target side network in the user equipment.
  • the type of switch initiated during the process is used to indicate that the source side access network device moves from the source side network to the target side network in the user equipment.
  • the first information or the second information sent by the transmitter 21 includes The CS indication and/or the PS indication, the CS indication indicates that the handover type includes a CS to PS handover, and the PS indication indicates that the handover type includes a PS to PS handover;
  • the first information or the second information is represented by a handover connection value, where the first information switching connection value is 1 indicating that the user equipment has a CS connection, the handover type includes a CS to PS handover, and the second information switching connection value is 1 indicating that the user equipment has PS connection, the handover type includes PS to PS handover; the first information or the second information handover connection value of 2 indicates that the user equipment has a CS and PS connection, and the handover type includes CS to PS handover and PS to PS handover.
  • the access network device provided by the embodiment of the present invention is specifically an access network device of the source side network, and may be a network device such as a BSC or an RNC.
  • the access network device provided by the embodiment of the present invention corresponds to the single channel voice call continuity SRVCC handover method provided by the embodiment of the present invention, and is an execution device of the single channel voice call continuity SRVCC handover method, and the specific process of the execution method thereof
  • the access network device provided by the embodiment of the present invention corresponds to the single channel voice call continuity SRVCC handover method provided by the embodiment of the present invention, and is an execution device of the single channel voice call continuity SRVCC handover method, and the specific process of the execution method thereof
  • the handover request sent to the source-side core network device includes information indicating the handover type, and the source-side core network device sends the CS-to-PS handover request and/or the PS to the target-side core network device to The information is included in the PS handover request, so that the target side core network device and the target side access network device perform corresponding handover according to the coordination information, so as to ensure smooth handover of the SRVCC.

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Abstract

本发明实施例涉及一种单信道语音呼叫连续性SRVCC切换方法和设备。一种方法包括:接收源侧核心网设备发送的CS至PS切换请求和/或PS至PS切换请求,CS至PS切换请求中包含第一信息,PS至PS切换请求中包含第二信息,第一信息或第二信息用于指示切换类型;根据第一信息或第二信息指示的切换类型,与目标侧接入网设备交互进行CS至PS切换和/或PS至PS切换;向源侧核心网设备返回切换请求响应。本发明实施例,保证SRVCC切换的顺利进行。

Description

单信道语音呼叫连续性 SRVCC切换方法和设备 技术领域
本发明实施例涉及移动通信技术领域, 特别涉及一种单信道语音呼叫连 续性 SRVCC切换方法和设备。 背景技术
演进通用移动通信***陆地无线接入网 ( Evolved Universal Mobile Telecommunication System Territorial Radio Access Network, E-UTRAN ) 和演进分组核心网 ( Evolved Packet Core Network, EPC )构成了演进分组 ***( Evolved Packet System, EPS )。 EPS中一般釆用互联网协议( Internet Protocol, IP )多媒体子*** ( IP Multimedia Subsystem, IMS )提供语音服 务。
为了提高和改善语音业务体验, 当全球移动通信 (Global System of Mobile communication , GSM ) /增强型数据速率 GSM演进( Enhanced Data Rate for GSM Evolution , EDGE )无线接入网 ( GSM/EDGE Radio Access Network , GERAN ) , 或通用 移动通信 系 统 ( Universal Mobile Telecommunications System, UMTS ) 陆地无线接入网 ( UMTS Territorial Radio Access Network, UTRAN ) 中正在进行电路交换( Circuit Switched, CS )语音业务的用户设备 ( User Equipment, UE )移动到支持 IMS语音的 高速分组接入( High Speed Packet Access, HSPA ) 的 UTRAN覆盖区域, 或者移动到 E-UTRAN覆盖区域时,可以执行单信道语音呼叫连续性(Single Radio Voice Call Continuity, SRVCC )切换流程, 将 UE的语音业务从电路 交换域切换到支持 HSPA的 UTRAN的分组交换域, 或者切换到 E-UTRAN 的分组交换域。
现有的 SRVCC切换处理中, 目标侧支持 HSPA的 UTRAN的服务 GPRS支 持节点 (Serving GPRS Support Node, SGSN )或 E-UTRAN的移动管理实 体( Mobility Management Entity, MME )可能分别获取源侧移动交换中心服 务器( Mobile Switch Center Server, MSC Server )或移动交换中心 /拜访位 置寄存器 ( Mobile Switch Center / Visitor Location Register, MSC/VLR )发 送的 CS到 PS切换请求, 以及源侧 GERAN或者 UTRAN的 SGSN发送的 PS到 PS切换请求(简称 PS切换请求), 由于这两条切换请求没有时序关系, 如果 目标侧 SGSN或 MME收到其中一条切换请求便和目标侧无线网络侧控制器 ( Radio Network Controller, RNC )或者目标侧演进基站 ( eNodeB )交互, 将导致 S RVCC切换无法完成。 发明内容
本发明实施例提供一种单信道语音呼叫连续性 SRVCC 切换方法和设 备, 保证 SRVCC切换的顺利进行。
一方面, 本发明实施例提供了一种单信道语音呼叫连续性 SRVCC切换 方法, 包括:
接收源侧核心网设备发送的电路交换域 CS至分组交换域 PS切换请求 和 /或 PS至 PS切换请求, 所述 CS至 PS切换请求中包含第一信息, 所述 PS至 PS切换请求中包含第二信息, 所述第一信息或所述第二信息用于指示 源侧接入网设备在用户设备从源侧网络移动至目标侧网络过程中发起的切换 类型;
根据所述第一信息或所述第二信息指示的所述切换类型, 与目标侧接入 网设备交互进行 CS至 PS切换和 /或 PS至 PS切换;
向所述源侧核心网设备返回切换请求响应。
另一方面, 本发明实施例还提供一种核心网设备, 包括:
接收器, 用于接收源侧核心网设备发送的电路交换域 CS至分组交换域
PS切换请求和 /或 PS至 PS切换请求, 所述 CS至 PS切换请求中包含第一 信息,所述 PS至 PS切换请求中包含第二信息,所述第一信息或所述第二信 息用于指示源侧接入网设备在用户设备从源侧网络移动至目标侧网络过程中 发起的切换类型;
处理器, 用于根据所述第一信息或所述第二信息指示的所述切换类型, 与目标侧接入网设备交互进行 CS至 PS切换和 /或 PS至 PS切换;
发送器, 用于向所述源侧核心网设备返回切换请求响应。
本发明实施例还提供一种接入网设备, 包括:
处理器, 用于根据第一信息或第二信息指示的源侧接入网设备在用户设 备从源侧网络移动至目标侧网络过程中发起的切换类型, 与目标侧核心网设 备交互进行电路交换域 CS至分组交换域 PS切换和 /或 PS至 PS切换; 其中, 所述第一信息包含在源侧核心网设备向所述目标侧核心网设备发 送的 CS至 PS切换请求中, 所述第二信息包含在所述源侧核心网设备向所 述目标侧核心网设备发送的 PS至 PS切换请求中。
由上述技术方案可知, 本发明实施例提供的单信道语音呼叫连续性 SRVCC切换方法和设备, 源侧接入网设备向源侧核心网设备发送的切换请 求中包含指示切换类型的信息,源侧核心网设备向目标侧核心网设备发送 CS 至 PS切换请求和 /或 PS至 PS切换请求中包含该信息, 从而使目标侧核心 网设备和目标侧接入网设备根据该信息进行相应的切换, 以保证 SRVCC切 换的顺利进行。 附图说明 施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明提供的 SRVCC切换方法一个实施例的流程图; 图 2为本发明提供的 SRVCC切换方法又一个实施例的流程图; 图 3为本发明提供的 SRVCC切换方法另一个实施例的流程图; 图 4为本发明提供的 SRVCC切换方法再一个实施例的流程图; 图 5为本发明提供的核心网设备一个实施例的结构示意图;
图 6为本发明提供的接入网设备一个实施例的结构示意图;
图 7为本发明提供的接入网设备又一个实施例的结构示意图;
图 8为本发明提供的接入网设备另一个实施例的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
图 1为本发明提供的 SRVCC切换方法一个实施例的流程示意图, 如图 1 所示, 该方法包括:
S101、 接收源侧核心网设备发送的电路交换域 CS至分组交换域 PS切 换请求和 /或 PS至 PS切换请求, CS至 PS切换请求中包含第一信息, PS 至 PS切换请求中包含第二信息, 第一信息或第二信息用于指示源侧接入网 设备在用户设备从源侧网络移动至目标侧网络过程中发起的切换类型;
S102、 根据第一信息或第二信息指示的切换类型, 与目标侧接入网设备 交互进行 CS至 PS切换和 /或 PS至 PS切换;
S 103、 向源侧核心网设备返回切换请求响应。
以上步骤的执行主体为目标侧网络的核心网设备, 具体可以是目标侧支 持 HSPA的 UTRAN网络中的 SGSN , 或者是 E-UTRAN网络中的 MME等 网络设备。
本发明实施例涉及的目标侧接入网设备, 具体可以是目标侧网络中的 RNC或 eNodeB等网络设备。
本发明实施例涉及的源侧核心网设备, 具体可以是源侧网络的移动交换 中心服务器(MSC Server )或移动交换中心 /拜访位置寄存器(MSC/VLR ), 还可以是源侧的 SGSN等网络设备。 其中, 向目标侧核心网设备发送 CS至 PS切换请求的可以为源侧的 MSC Server或 MSC/VLR, 向目标侧核心网设 备发送 PS至 PS切换请求的可以为源侧的 SGSN。
本发明实施例适用于正在进行 CS业务和 /或 PS业务的用户设备 UE,从 一个网络移动到另一个网络的过程中, UE接入的源侧接入网设备(例如: 基 站控制器( Base Station Controller, BSC )或 RNC等网络设备)发起的 CS 至 PS切换过程, 和 /或源侧接入网设备 (例如: BSC或 RNC )发起的 PS至 PS的切换过程。
正在进行 CS语音业务的 UE,从 GERAN或者 UTRAN等网络移动到支 持 IMS语音的 HSPA/UTRAN网络, 或者移动到 E-UTRAN网络的过程中, 为了提高 UE语音业务的体验, 源侧的接入网设备可以发起 SRVCC切换过 程, 具体是: 源侧的接入网设备可以向源侧的核心网设备 MSC Server或 MSC/VLR发送切换请求, 以使源侧的核心网设备 MSC Server或 MSC/VLR 向目标侧核心网设备 SGSN或 MME发送上述 CS至 PS切换请求, 执行 CS至 PS切换处理;
如果正在进行 CS语音业务的 UE, 同时也正在进行 PS业务(例如正在 进行数据下载),当源侧网络支持双向传输模式( Dual-Transfer Mode, DTM ), 或者源侧网络是 UTRAN网络时, 则源侧的接入网设备发起的 SRVCC切换 过程中除了完成上述 CS至 PS的切换处理之外, 还可以同时执行 PS至 PS 切换处理, 具体包括: 源侧的接入网设备向源侧的核心网设备 SGSN发送切 换请求, 以使源侧的核心网设备 SGSN向目标侧核心网设备 SGSN或 MME 发送上述 PS至 PS切换请求, 执行 PS至 PS切换处理。
另外, UE在从源侧网络移动到目标侧网络的过程中,可能仅存在正在进 行的 PS业务而不存在正在进行的 CS语音业务的情况, 则这种情况下, 源 侧的接入网设备只会发起 PS至 PS的切换,具体包括: 源侧的接入网设备向 源侧的核心网设备 SGSN发送切换请求,从而使源侧的核心网设备 SGSN向 目标侧核心网设备 SGSN或 MME发起 PS至 PS切换请求, 执行 PS至 PS 切换处理。
综上所述, 目标侧核心网设备 SGSN或 MME可以仅接收到源侧核心网 设备发送的 CS至 PS切换请求; 或者, 目标侧核心网设备 SGSN或 MME 可以接收到源侧核心网设备发送的 CS至 PS切换请求以及源侧核心网设备 发送的 PS至 PS切换请求; 或者, 目标侧核心网设备 SGSN或 MME可以 仅接收到源侧核心网设备发送的 PS至 PS切换请求。
本发明实施例中, 由于源侧接入网设备是 SRVCC切换过程的发起方, 因此, 为了使目标侧核心网设备和 /或目标侧接入网设备能够获知源侧接入网 设备发起的 SRVCC切换过程仅包括 CS至 PS切换, 还是仅包括 PS至 PS 切换, 还是既包括 CS至 PS切换又包括 PS至 PS切换, 以便目标侧核心网 设备和 /或目标侧接入网设备协调切换, 源侧接入网设备可以在发送给源侧核 心网设备 MSC Server或 MSC/VLR的切换请求中包含第一信息, 通过该第 一信息指示源侧接入网设备在 UE从源侧网络移动至目标侧网络过程中发起 的切换类型。 其中, 第一信息可以设置成不同的标识, 来表示发起的切换类 型为 CS至 PS切换, 或者 CS至 PS切换和 PS至 PS切换; 同样, 源侧接 入网设备可以在发送给源侧核心网设备 SGSN的切换请求中包含第二信息, 通过该第二信息指示源侧接入网设备在 UE从源侧网络移动至目标侧网络过 程中发起的切换类型。 与第一信息类似的, 第二信息也可以设置成不同的标 识, 来表示发起的切换类型为 PS至 PS切换, 或者 CS至 PS切换和 PS至 PS切换。
如果源侧核心网设备接收到源侧接入网设备发送的包含第一信息的切换 请求, 则源侧核心网设备可以向目标侧核心网设备发起 CS至 PS切换请求, 并将该第一信息包含在上述 CS至 PS切换请求中;
如果源侧核心网设备接收到源侧接入网设备发送的包含第二信息的切换 请求, 则源侧核心网设备可以向目标侧核心网设备发起 PS至 PS切换请求, 并将该第二信息包含在上述 PS至 PS切换请求中。
作为一种可行的实施方式, 可以由目标侧核心网设备执行协调切换的操 作。 具体的: 当目标侧核心网设备接收到源侧核心网设备发送的 CS 至 PS 切换请求或 PS至 PS切换请求后, 可以根据 CS至 PS切换请求中包含的第 一信息或 PS至 PS切换请求中包含的第二信息, 判断出源侧接入网设备在 UE从源侧网络移动至目标侧网络过程中发起的切换类型。如果目标侧核心网 设备通过第一信息或第二信息判断出源侧接入网设备发起 CS至 PS切换和 PS至 PS切换, 则目标侧核心网设备可以等到接收到源侧核心网设备 MSC Server或 MSC/VLR发送的 CS至 PS切换请求和源侧核心网设备 SGSN发 送的 PS至 PS切换请求这两个请求之后,再向目标侧接入网设备发送切换请 求, 以使目标侧接入网设备进行 CS至 PS切换和 PS至 PS切换。
当目标侧核心网设备接收到 CS至 PS切换请求或 PS至 PS切换请求后, 如果目标侧核心网设备根据 CS至 PS切换请求中包含的第一信息或 PS至 PS切换请求中包含的第二信息,判断出源侧接入网设备在 UE从源侧网络移 动至目标侧网络过程中仅发起 CS至 PS切换, 或者仅发起 PS至 PS切换, 则目标侧核心网设备可以立即向目标侧接入网设备发送切换请求, 以使目标 侧接入网设备进行 CS至 PS切换或 PS至 PS切换。
作为另一种可行的实施方式, 还可以由目标侧接入网设备执行协调切换 的操作。 具体的: 目标侧核心网设备接收到 CS至 PS切换请求后, 可以直 接向目标侧接入网设备发送包含第一信息的切换请求; 同样, 目标侧核心网 设备接收到 PS至 PS切换请求后,可以直接向目标侧接入网设备发送包含第 二信息的切换请求。 目标侧接入网设备可以根据在先接收到的第一信息或第 二信息, 判断出源侧接入网设备在 UE从源侧网络移动至目标侧网络过程中 发起的切换类型。 若源侧接入网设备既发起 CS至 PS切换, 又发起 PS至 PS切换, 则目标侧接入网设备可以等到接收到目标侧核心网设备发送的 CS 至 PS切换和 PS至 PS切换两条切换请求后, 进行 CS至 PS切换和 PS至 PS切换。
如果目标侧接入网设备根据在先接收到的第一信息或第二信息判断出源 侧接入网设备在 UE从源侧网络移动至目标侧网络过程中发起的切换类型仅 包括 CS至 PS切换, 或者仅包括 PS至 PS切换, 则目标侧接入网设备可以 在收到包含上述第一信息或第二信息的切换请求之后, 立即进行 CS 至 PS 切换或 PS至 PS切换。
目标侧接入网设备完成切换类型对应的切换后, 向目标侧核心网设备返 回切换响应, 目标侧核心网设备向源侧核心网设备返回 CS至 PS切换请求 响应和 /或 PS至 PS切换请求响应, 以使源侧核心网设备向源侧接入网设备 发送 CS至 PS切换命令和 /或 PS至 PS切换命令。
本实施例提供的 SRVCC切换方法, 目标侧核心网设备从源侧接入网设 备接收的 CS至 PS切换请求和 /或 PS至 PS切换请求中包含指示切换类型的 信息, 从而使目标侧核心网设备和目标侧接入网设备根据该信息进行相应的 切换, 以保证 SRVCC切换的顺利进行。
图 2为本发明提供的 SRVCC切换方法又一个实施例的流程图,如图 2所 示, 该方法包括:
S201、源侧接入网设备根据用户设备的业务情况和 /或源侧网络是否支持 双传输模式 DTM, 确定向源侧核心网设备发起电路交换域 CS至分组交换域
PS切换和 /或 PS至 PS切换;
S202、源侧接入网设备向源侧核心网设备发起第六切换请求和 /或第七切 换请求, 第六切换请求以使源侧核心网设备向目标侧核心网设备发送 CS至 PS 切换请求, 第七切换请求以使源侧核心网设备向目标侧核心网设备发送
PS至 PS切换请求; 其中, 第六切换请求中包含第一信息, 第七切换请求中包含第二信息,
CS至 PS切换请求中包含第一信息, PS至 PS切换请求中包含第二信息, 第一信息或第二信息用于指示源侧接入网设备在用户设备从源侧网络移动至 目标侧网络过程中发起的切换类型。
以上步骤的执行主体为源侧接入网设备, 具体可以是源侧网络中的 BSC 或 RNC等网络设备。
本发明实施例涉及的源侧核心网设备, 具体可以是源侧网络的 MSC Server或 MSC/VLR, 还可以是源侧的 SGSN等网络设备。 其中, 接收第六 切换请求的源侧核心网设备可以是源侧的 MSC Server或 MSC/VLR,接收第 七切换请求的源侧核心网设备可以是源侧的 SGSN。
本发明实施例涉及的目标侧核心网设备, 具体可以是目标侧支持 HSPA 的 UTRAN网络中的 SGSN, 或者是 E-UTRAN网络中的 MME等网络设备。
本发明实施例涉及的目标侧接入网设备, 具体可以是目标侧网络中的 RNC或 eNodeB等网络设备。
本发明实施例适用于正在进行 CS业务和 /或 PS业务的用户设备 UE,从 一个网络移动到另一个网络的过程中, UE接入的源侧接入网设备发起的 CS 至 PS切换过程, 和 /或源侧接入网设备发起的 PS至 PS的切换过程。
源侧接入网设备根据用户设备的业务情况和 /或源侧网络是否支持双传 输模式 DTM, 确定向源侧核心网设备发起电路交换域 CS至分组交换域 PS 切换和 /或 PS至 PS切换。 其中, 用户设备的业务情况可以是用户设备正在 进行的业务类型, 例如: UE存在正在进行的 CS业务(例如: 正在进行 CS 语音通话),或者是 UE存在正在进行的 PS业务(例如:正在进行网页浏览), 或者是 UE同时存在正在进行的 CS业务和 PS业务。源侧接入网设备可以根 据 UE的业务情况确定发起的切换类型。 源侧接入网设备判断 UE是否正在 进行 CS业务和 /或 PS业务,可以根据源侧接入网设备是否存在 CS连接(如 lu-CS连接 )和 /或 PS连接(如 lu-PS连接 )来进行判断。 另外, 如果源侧 网络为 GERAN网络,则源侧接入网设备还可以根据源侧网络是否支持 DTM 而确定发起的切换类型。
具体的,如果 UE仅存在正在进行的 CS语音业务,则为了提高 UE的语 音业务体验, 源侧的接入网设备可以向源侧的核心网设备 MSC Server或 MSC/VLR 发送第六切换请求, 以使源侧的核心网设备 MSC Server 或 MSC/VLR向目标侧核心网设备 SGSN或 MME发起 CS至 PS切换请求处理; 如果正在进行 CS语音业务的 UE, 同时也正在进行 PS业务(例如正在 进行数据下载), 当源侧网络支持 DTM , 或者源侧网络是 UTRAN 网络时, 则源侧的接入网设备除了发起上述的第六切换请求以使源侧的核心网设备 MSC Server或 MSC/VLR向目标侧核心网设备 SGSN或 MME发起 CS至 PS切换请求处理之外, 还可以同时向源侧的核心网设备 SGSN发起第七切 换请求, 以使源侧的核心网设备 SGSN向目标侧核心网设备 SGSN或 MME 发起 PS至 PS切换请求处理。
另外, UE在从源侧网络移动到目标侧网络的过程中,可能仅存在正在进 行的 PS业务而不存在正在进行的 CS语音业务, 则这种情况下, 源侧的接 入网设备只会向源侧的核心网设备 SGSN发起第七切换请求, 以使源侧的核 心网设备 SGSN向目标侧核心网设备 SGSN或 MME发起 PS至 PS切换请 求处理。
本发明实施例中, 由于源侧接入网设备是 SRVCC切换过程的发起方, 因此, 为了使目标侧核心网设备和目标侧接入网设备能够获知源侧接入网设 备发起的 SRVCC切换过程仅包括 CS至 PS切换, 还是仅包括 PS至 PS切 换, 还是既包括 CS至 PS切换又包括 PS至 PS切换, 以便目标侧核心网设 备和 /或目标侧接入网设备协调切换, 源侧接入网设备可以在发送给源侧核心 网设备 MSC Server或 MSC/VLR的第六切换请求中包含第一信息, 通过该 第一信息指示源侧接入网设备在 UE从源侧网络移动至目标侧网络过程中发 起的切换类型。 该第一信息可以设置成不同的标识, 来表示发起的切换类型 为 CS至 PS切换, 或者 CS至 PS切换和 PS至 PS切换; 同样, 源侧接入 网设备可以在发送给源侧核心网设备 SGSN 的第七切换请求中包含第二信 息, 通过该第二信息指示源侧接入网设备在 UE从源侧网络移动至目标侧网 络过程中发起的切换类型。 同样的, 该第二信息也可以设置成不同的标识, 来表示发起的切换类型为 PS至 PS切换, 或者 CS至 PS切换和 PS至 PS 切换。
如果源侧核心网设备接收到源侧接入网设备发送的包含第一信息的第六 切换请求, 则源侧核心网设备可以向目标侧核心网设备发起 CS至 PS切换 请求, 并将该第一信息包含在 CS至 PS切换请求中;
如果源侧核心网设备接收到源侧接入网设备发送的包含第二信息的第七 切换请求,则源侧核心网设备可以向目标侧核心网设备发起 PS至 PS切换请 求, 并将该第二信息包含在 PS至 PS切换请求中。
本实施例提供的 SRVCC切换方法, 源侧接入网设备向源侧核心网设备 发送的切换请求中包含指示切换类型的信息, 源侧核心网设备向目标侧核心 网设备发送 CS至 PS切换请求和 /或 PS至 PS切换请求中包含该信息,从而 使目标侧核心网设备和目标侧接入网设备根据该信息进行相应的切换, 以保 证 SRVCC切换的顺利进行。
图 3为本发明提供的 SRVCC切换方法另一个实施例的流程图, 如图 3 所示, 本实施例中, 由目标侧接入网设备执行协调切换的操作。 其中, 源侧 接入网设备可以为 BSC或 RNC, 源侧核心网设备可以为 MSC Server或 MSC/VLR和 /或 SGSN , 目标侧接入网设备可以为 RNC或 eNodeB, 目标侧 核心网设备可以为 SGSN或 MME。
该方法具体包括:
S301 a、源侧 BSC或 RNC决策需要发起 SRVCC切换,向源侧 MSC Server 或 MSC/VLR发送第六切换请求, 所述第六切换请求中包含第一信息。 其中, 第六切换请求可以为切换请求( Handover Required )消息或者重 置请求 ( Relocation Required ) 消息。
为了使目标侧接入网设备 RNC或 eNodeB能够获知源侧接入网设备发起 的 SRVCC切换过程仅包括 CS至 PS切换, 还是既包括 CS至 PS切换又包括 PS 至 PS切换, 以便进行协调切换操作, 源侧 BSC或 RNC可以在上述 Handover Required或者 Relocation Required消息中包含第一信息, 通过该第一信息指 示源侧 BSC或 RNC在 UE从源侧网络移动至目标侧网络过程中发起的切换类 型。
所述第一信息可以包含在上述第六切换请求消息包含的一个容器信元 中, 或者, 所述第一消息还可以包含在上述第六切换请求消息中的一个单独 信元中。
第六切换请求消息中包含的容器信元可以是, 旧基站子*** (Base Station Subsystem , BSS ) 到新基站子***信息 ( old BSS to new BSS information )信元, 或者源侧 RNC到目标侧 RNC透明容器(Source RNC to Target RNC Transparent Container )信元等。
S301 b、 源侧 BSC或 RNC向源侧 SGSN发送第七切换请求, 该第七切换 请求中包含第二信息。
其中, 第七切换请求可以为 Handover Required消息或者 Relocation Required消息。
与 S301a类似的,为了使目标侧接入网设备 RNC或 eNodeB能够获知源侧 接入网设备发起的 SRVCC切换过程仅包括 PS至 PS切换, 还是既包括 CS至 PS切换又包括 PS至 PS切换, 以便进行协调切换操作, 源侧 BSC或 RNC也可 以在上述 Handover Required或者 Relocation Required消息中包含第二信息, 程中发起的切换类型。 所述第二信息可以包含在上述第七切换请求消息包含的一个容器信元 中, 或者, 第二信息还可以包含在上述第七切换请求消息的一个单独信元中。
第七切换请求消息包含的容器信元可以是, 源侧 BSS到目标侧 BSS透明 容器 ( Source BSS to Target BSS Transparent Container )信元, 或者源侧 RNC到目标侧 RNC透明容器 ( Source RNC to Target RNC Transparent Gontsinsr )信元等。
需要说明的是, 源侧 BSC或 RNC可以根据用户设备的业务情况(例如, 仅存在 CS业务, 或者仅存在 PS业务, 或者同时存在正在进行的 CS和 PS业 务) , 和 /或源侧网络是否支持 DTM , 确定向源侧核心网设备发起 CS至 PS切 换和 /或 PS至 PS切换, 具体可参见前述实施例中的相关描述。
如果源侧 BSC或 RNC确定只发起 CS至 PS的切换, 则本实施例中仅执行 S301a; 如果源侧 BSC或 RNC确定只发起 PS至 PS的切换, 则本实施例中仅 的切换, 则本实施例中既执行 S301 a, 又执行 S301 b, 并且, S301a和 S301 b 之间不存在时序关系, 可以先执行 S301 a, 也可以先执行 S301 b。
其中, 第一信息和第二信息的命名及表现形式并不做出具体限定。 第一 信息和第二信息可以命名为例如: "rSRVCC类型" 、 "rSRVCC指示" 或者
"切换类型" 等。
作为一种可行的实施方式,第一信息或第二信息中包括 CS指示和 /或 PS 指示, CS指示表示切换类型包括 CS至 PS切换, PS指示表示所述切换类 型包括 PS至 PS切换。如果源侧 BSC或 RNC确定只发起 CS至 PS的切换, 则源侧 BSC或 RNC可以在第一消息中只包括 CS指示, 第一消息可以以例 如: "CS only"、 "CS only rSRVCC" 或者 "CS only handover" 等形式来表 示; 如果源侧 BSC或 RNC确定只发起 PS至 PS的切换, 则源侧 BSC或 RNC可以在第二消息中只包括 PS指示, 第二消息可以以例如: "PS only"、 "PS only rSRVCC" 或者 "PS only handover" 等形式来表示; 如果源侧 BSC或 RNC确定既发起 CS至 PS的切换又发起 PS至 PS的切换, 则源侧 BSC或 RNC可以在第一消息中包括 CS指示和 PS指示,第一消息可以以例 如: "CS and PS"、 "CS and PS rSRVCC" 或者 "CS and PS handover" 等形式来表示; 同样, 源侧 BSC或 RNC可以在第二消息中包括 CS指示和 PS指示, 第二消息可以以例如: "CS and PS,,、 "CS and PS rSRVCC" 或 者 "CS and PS handover" 等形式来表示。
作为另一种可行的实施方式, 第一信息或第二消息还可以以釆用源侧 BSC或 RNC在切换时与源侧 MSC Server或 MSC/VLR以及源侧 SGSN之间的 连接数, 即切换连接数值表示, 切换连接数值为 1表示源侧 BSC或 RNC只有 和源侧 MSC Server或 MSC/VLR的 CS连接或者和源侧 SGSN的 PS连接,切换 类型包括 CS至 PS切换或 PS至 PS切换; 切换连接数值为 2表示源侧 BSC或 RNC具有和源侧 MSC Server或 MSC/VLR的 CS连接以及和源侧 SGSN的 PS 连接, 切换类型包括 CS至 PS切换和 PS至 PS切换。
S302a、 源侧 MSC Server或 MSC/VLR向目标侧 SGSN或 MME发送 CS至 PS切换请求, 例如 CS至 PS切换请求(CS to PS Handover Request ) 消息, 该 CS至 PS切换请求中包含第一信息。
其中, 上述 CS至 PS切换请求中包含源侧 BSC或 RNC提供的容器信元, 即, old BSS to new BSS information信元, 或者 Source RNC to Target RNC Transparent Container信元等。
源侧 MSC Server或 MSC/VLR可以将第一信息包含在 CS至 PS切换请求 的上述容器信元中, 或者包含在 CS至 PS切换请求的一个单独信元中。
S302b、 源侧 SGSN向目标侧 SGSN或 MME发送 PS至 PS切换请求, 例如 转发重置请求( Forward Relocation Request ) 消息, 该 PS至 PS切换请求中 包含第二信息。
其中, 上述 PS至 PS切换请求中包含源侧 BSC或 RNC提供的容器信元, 即, Source BSS to Target BSS Transparent Container信元, 或者 Source RNC to Target RNC Transparent Container信元等。
源侧 SGSN可以将第二信息包含在 PS至 PS切换请求的上述容器信元中, 或者包含在 PS至 PS切换请求的一个单独信元中。
需要说明的是, S302a与 S301a对应, S302b与 S301 b对应, 如果本实施 中不执行 S301 a, 则不执行 S302a; 如果本实施中不执行 S301 b, 则不执行 S302b。 另外, S302a和 S302b之间不存在时序关系。
S303a、 目标侧 SGSN或 MME向目标侧 RNC或 eNodeB发送第一切换请 求, 该第一切换请求中包含第一信息。
其中, 第一切换请求可以是重置请求(Relocation Request ) 消息或者 切换请求( Handover Request )消息。 该 Relocation Request或者 Handover Request消息的 Source RNC to Target RNC Transparent Container信元或者 Source to Target Transparent Container信元中包括源侧核心网设备提供的 容器信元信息, 即, old BSS to new BSS information信元, 或者 Source RNC to Target RNC Transparent Container信元等。
目标侧 SGSN或 MME可以釆用 Relocation Request或者 Handover
Request消息的 Source RNC to Target RNC Transparent Container信元或者 Source to Target Transparent Container信元包含第一信息。
需要说明的是, 当步骤 301 a中, 源侧 BSC或 RNC将上述第一信息包含在 第六切换请求中的容器信元中时, 则目标侧 SGSN或 MME在上述第一切换请 求消息中包含的容器信元中即包含了上述第一信息; 当步骤 301a中, 源侧 BSC或 RNC将上述第一信息包含在第六切换请求中的一个独立的信元中时, 则目标侧 SGSN或 MME可以将上述第一信息包含在上述发送给目标侧 RNC 或 eNodeB的第一切换请求中的上述容器信元中或者另一个独立的信元中。
S303b、 目标侧 SGSN或 MME向目标侧 RNC或 eNodeB发送第二切换请 求, 该第二切换请求中包含第二信息。 其中, 第二切换请求消息可以是重置请求(Relocation Request ) 消息 或者切换请求 ( Handover Request ) 消息。 该 Relocation Request或者 Handover Request消息中的 Source RNC to Target RNC Transparent Container信元或者 Source to Target Transparent Container信元包括源侧核 心网设备提供的容器信元信息, 即, Source BSS to Target BSS Transparent Container信元, 或者 Source RNC to Target RNC Transparent Container信 元等。
目标侧 SGSN或 MME可以釆用 Relocation Request或者 Handover Request消息的 Source RNC to Target RNC Transparent Container信元或者 Source to Target Transparent Container信元包含第二信息。
与 S303a类似的, 当步骤 301 b中, 源侧 BSC或 RNC将上述第二信息包含 在第七切换请求消息的容器信元中时, 则目标侧 SGSN或 MME在上述第二切 换请求消息中包含的容器信元中即包含了上述第二信息; 当步骤 301 b中, 源 侧 BSC或 RNC将上述第二信息包含在一个独立的信元中时, 则目标侧 SGSN 或 MME可以将上述第二信息包含在上述发送给目标侧 RNC或 eNodeB的第二 切换请求中的上述容器信元中或者另一个独立的信元中。
需要说明的是, S303a与 S302a对应, S303b与 S302b对应, 如果本实施 中不执行 S302a, 则不执行 S303a; 如果本实施中不执行 S302b, 则不执行 S303b。 另外, S303a和 S303b之间不存在时序关系。
作为一种可行的实施方式, 目标侧 RNC或 eNodeB在接收到第一切换 请求或第二切换请求中的一个时, 便可以根据第一信息或第二信息判断源侧 BSC或 RNC仅发起 CS至 PS切换, 还是仅发起 PS至 PS切换, 还是既发 起 CS至 PS切换又发起 PS至 PS切换。
如果源侧 BSC或 RNC既发起 CS至 PS切换又发起 PS至 PS切换,则 目标侧 RNC或 eNodeB可以等到接收到在后到达的第二切换请求或第一切 换请求后, 再执行 S304CS至 PS切换以及 PS至 PS切换的操作。 如果源侧 BSC或 RNC仅发起 CS至 PS切换,或者仅发起 PS至 PS切 换, 则目标侧 RNC或 eNodeB在收到第一切换请求或第二切换请求之后, 可以直接执行 S304的 CS至 PS切换或 PS至 PS切换操作。
其中,由于目标侧 RNC或 eNodeB无法区分 S303a和 S303b两个步骤中接 收到的第一切换请求和第二切换请求, 因此, 可选的, 目标侧 SGSN或 MME 可以在第一切换请求中包含第一指示标识, 第一指示标识指示第一切换请求 用于请求 CS至 PS切换, 该第一指示标识可以以例如 "CS" 的形式表示; 同 样, 目标侧 SGSN或 MME也可以在第二切换请求中包含第二指示标识, 第二 指示标识指示第二切换请求用于请求 PS至 PS切换,该第一指示标识可以以例 如 "PS" 的形式表示。
S304、目标侧 RNC或 eNodeB根据第一信息或第二信息指示的切换类型, 进行 CS至 PS切换和 /或 PS至 PS切换。
如果第一信息指示源侧 BSC或 RNC仅发起 CS至 PS切换, 则目标侧 RNC 或 eNodeB进行 CS至 PS切换;
如果第二信息指示源侧 BSC或 RNC仅发起 PS至 PS切换, 则目标侧 RNC 或 eNodeB进行 PS至 PS切换;
如果第一信息或第二信息指示源侧 BSC或 RNC发起 CS至 PS切换和 PS 至 PS切换, 则目标侧 RNC或 eNodeB需要等收到第一切换请求和第二切换请 求两条消息之后, 进行 CS至 PS切换和 PS至 PS切换。 其中, 所述第一切换请 求可以包括第一指示标识; 所述第二切换请求可以包括第二指示标识。
S305a、 目标侧 RNC或 eNodeB向目标侧 SGSN或 MME返回第一切换请 求响应。
S305b、 目标侧 RNC或 eNodeB向目标侧 SGSN或 MME返回第二切换请 求响应。
如果目标侧 RNC或 eNodeB仅接收到第一切换请求, 则目标侧 RNC或 eNodeB向目标侧 SGSN或 MME返回第一切换请求响应, 即仅执行 S305a;如 果目标侧 RNC或 eNodeB仅接收到第二切换请求, 则目标侧 RNC或 eNodeB 向目标侧 SGSN或 MME返回第二切换请求响应, 即仅执行 S305b; 如果目标 侧 RNC或 eNodeB既接收到第一切换请求, 又接收到第二切换请求, 则目标 侧 RNC或 eNodeB向目标侧 SGSN或 MME返回第一切换请求响应和第二切换 请求响应, 即, 既执行 S305a又执行 S305b, S305a和 S305b之间没有时序关 系, 可以先执行 S305a, 也可以先执行 S305b。
其中, 第一切换请求响应或第二切换请求响应均可以为重置请求确认 ( Relocation Request Acknowledge ) 消息或者切换请求确认 ( Handover Request Acknowledge ) 消息。
与 S303a和 S303b类似的, 可选的, S305a中, 目标侧 RNC或 eNodeB向 目标侧 SGSN或 MME返回的第一切换请求响应中可以进一步包含第三指示标 识, 该第三指示标识指示第一切换请求响应用于响应 CS至 PS切换, 该第三 指示标识可以以例如 "CS" 的形式表示;
同样,可选的, S305b中, 目标侧 RNC或 eNodeB向目标侧 SGSN或 MME 返回的第二切换请求响应中可以进一步包含第四指示标识, 该第四指示标识 指示第二切换请求响应用于响应 PS至 PS切换, 该第四指示标识可以以例如 "PS" 的形式表示。
S306a、 目标侧 SGSN或 MME向源侧 MSC Server或 MSC/VLR发送 CS至 PS切换请求响应, 例如 CS至 PS切换响应 ( CS to PS HO Response ) 消息。
S306b、 目标侧 SGSN或 MME向源侧 SGSN发送 PS至 PS切换请求响应, 例如转发重置响应 ( Forward Relocation Response ) 消息。
其中, S306a与 S302a对应, 如果执行 S302a, 则执行 S306a; S306b与 S302b对应, 如果执行 S302b, 则执行 S306b。 S306a和 S306b之间没有时序 关系。
S307a、 源侧 MSC Server或 MSC/VLR向源侧 BSC或 RNC发送 CS至 PS 切换命令 (可以是 Handover Command或者 Relocation Command消息) 。 S307b、 源侧 SGSN向源侧 BSC或 RNC发送 PS至 PS切换命令(可以是 Handover Command或者 Relocation Command消息 ) 。
其中, S307a与 S306a对应, 如果执行 S306a, 则执行 S307a; S307b与 S306b对应, 如果执行 S306b, 则执行 S307b。 S307a和 S307b之间没有时序 关系。
5308、 源侧 BSC或 RNC向 UE发送切换命令(Handover Command ) 。
5309、 UE执行从源侧网络到目标网络的切换, 向目标侧 RNC或 eNodeB 发送切换确认 ( Handover Confirm ) 消息。
5310、 目标侧 RNC或 eNodeB向目标侧 SGSN或 MME发送切换通知 ( Handover Notify ) 消息。
S311 a、 目标侧 SGSN或 MME向源侧 MSC Server或 MSC/VLR发送 CS至 PS切换完成通知 ( CS to PS Handover Complete Notification ) 消息。
S311 b、 目标侧 SGSN或 MME向源侧 SGSN发送转发重置完成( Forward Relocation Complete ) 消息或者转发重置完成通知 ( Forward Relocation Complete Notification ) 消息、。
其中, S31 1a和 S311 b之间没有时序关系。
S312a、 源侧 MSC Server或 MSC/VLR向目标侧 SGSN或 MME发送 CS至 PS切换完成通知确认 ( CS to PS Handover Complete Notification Acknowledge ) 消息。
S312b、 源侧 SGSN向目标侧 SGSN或 MME发送转发重置完成确认
( Forward Relocation Complete Acknowledge )消息或者转发重置完成通知 确认 ( Forward Relocation Complete Notification Acknowledge ) 消息。
其中, S312a和 S312b之间没有时序关系。
图 4为本发明提供的 SRVCC切换方法再一个实施例的流程图, 如图 4 所示, 本实施例与前一实施例的区别在于, 前一实施例中由目标侧接入网设 备执行协调切换的操作, 本实施例中由目标侧核心网设备执行协调切换的操 作。其中,源侧接入网设备可以为 BSC或 RNC,源侧核心网设备可以为 MSC Server或 MSC/VLR,或 SGSN ,目标侧接入网设备可以为 RNC或 eNodeB, 目标侧核心网设备可以为 SGSN或 MME。
该方法具体包括:
S401 a、源侧 BSC或 RNC决策需要发起 SRVCC切换,向源侧 MSC Server 或 MSC/VLR发送第六切换请求, 其中, 第六切换请求中包含第一信息。
S401 b、 源侧 BSC或 RNC向源侧 SGSN发送第七切换请求, 其中, 该第 七切换请求中包含第二信息。
S402a、 源侧 MSC Server或 MSC/VLR向目标侧 SGSN或 MME发送 CS至 PS切换请求, 例如 CS至 PS切换请求(CS to PS Handover Request ) 消息, 该 CS至 PS切换请求中包含第一信息。
S402b、 源^' JSGSN向目标 JSGSN或 MME发送 PS至 PS切换请求, 例^口 转发重置请求( Forward Relocation Request ) 消息, 该 PS至 PS切换请求中 包含第二信息。
本实施例中 S401 a-S402b可参见前一实施例中 S301a- S302b的相关描 述, 在此不再赘述。
S403、 目标侧 SGSN或 MME向目标侧 RNC或 eNodeB发送第三切换请 求, 或者第四切换请求, 或者第五切换请求。
本实施例与前一实施例的区别在于, 前一实施例中, 只要目标侧 SGSN 或 MME接收到源侧 MSC Server或 MSC/VLR发出的 CS至 PS切换请求, 或者 源侧 SGSN发送的 PS至 PS切换请求, 则向目标侧 RNC或 eNodeB发送切换请 求, 由目标侧 RNC或 eNodeB协调切换。
本实施例中, 由目标侧 SGSN或 MME执行协调切换操作。 具体的: 如 果目标侧 SGSN或 MME在先接收到的 CS至 PS切换请求或 PS至 PS切换 请求中包含的信息指示切换类型包括 CS至 PS切换和 PS至 PS切换, 则 S403中, 目标侧 SGSN或 MME接收到在后到达的 PS至 PS切换请求或 CS至 PS切换请求后, 向目标侧 RNC或 eNodeB发送第三切换请求, 该第 三切换请求可以为重置请求 ( Relocation Request ) 消息或者切换请求 ( Handover Request ) 消息。
需要说明的是, 所述第三切换请求消息中包含 CS至 PS切换请求中包 含的 CS无线资源信息以及 PS至 PS切换请求中包含的 PS无线资源信息。
其中,所述 CS无线资源信息由源侧 BSC或 RNC包含在发送给源侧 MSC Server或 MSC/VLR的切换请求中的 CS容器信元中, 并进而包含在发送给 目标侧 SGSN或 MME的 CS至 PS切换请求中的 CS容器信元中, 所述 CS 容器信元可以是, old BSS to new BSS information信元, 或者 Source RNC to Target RNC Transparent Container信元等;
所述 PS无线资源信息由源侧 BSC或 RNC包含在发送给源侧 SGSN的 切换请求中的 PS容器信元中, 并进而包含在发送给目标侧 SGSN或 MME 的 PS至 PS切换请求中的 PS容器信元中,所述 PS容器信元可以是, Source BSS to Target BSS Transparent Container信元,或者 Source RNC to Target RNC Transparent Container信元等。
为了区分第三切换请求中包含的 CS无线资源信息和 PS无线资源信息,可 以将 CS无线资源信息和所述 PS无线资源信息分别包含在第三切换请求的两 个容器信元中, 所述容器信元可以是发送给目标侧 RNC的 Source RNC to Target RNC Transparent Container或者发送给目标侧 eNodeB的 Source to Target Transparent Container容器信元。 这两个容器信元可以分别命名为, 例如: 发送给目标侧 RNC的 CS Source RNC to Target RNC Transparent Container和 PS Source RNC to Target RNC Transparent Container; 或者发 送给目标侧 eNodeB的 CS Source to Target Transparent Container和 PS Source to Target Transparent Container, 或者命名为发送给目标侧 RNC的 First RNC to Target RNC Transparent Container和 Secondary Source RNC to Target RNC Transparent Container; 或者发送给目标侧 eNodeB的 First Source to Target Transparent Container和 Secondary Source to Target Transparent Contsiner等。
可选的,目标侧 SGSN或 MME向目标侧 RNC或 eNodeB发送的第三切换请 求中还可以包含第一信息类型标识, 该第一信息类型标识用于指示第三切换 请求中包含的容器信元包含 CS无线资源信息和 PS无线资源信息, 该第一信 息类型标识可以以例如: "CS and PS" 等形式表示。
如果目标侧 SGSN或 MME在先接收到的 CS至 PS切换请求中包含的 第一信息指示切换类型包括 CS至 PS切换, 则目标侧 SGSN或 MME可以 直接向目标侧 RNC或 eNodeB发送第四切换请求, 该第四切换请求中包含 CS至 PS切换请求中包含的 CS无线资源信息;
同样的, 如果目标侧 SGSN或 MME在先接收到的 PS至 PS切换请求 中包含的第二信息指示切换类型包括 PS至 PS切换,则目标侧 SGSN或 MME 可以直接向目标侧 RNC或 eNodeB发送第五切换请求, 该第五切换请求中 包含 PS至 PS切换请求中包含的 PS无线资源信息;
其中,所述 CS无线资源信息由源侧 BSC或 RNC包含在发送给源侧 MSC
Server或 MSC/VLR的切换请求中的 CS容器信元中, 并进而包含在发送给 目标侧 SGSN或 MME的 CS至 PS切换请求中的 CS容器信元中, 所述 CS 容器信元可以是, old BSS to new BSS information信元,或者 Source RNC to Target RNC Transparent Container信元等;
所述 PS无线资源信息由源侧 BSC或 RNC包含在发送给源侧 SGSN的 切换请求中的 PS容器信元中, 并进而包含在发送给目标侧 SGSN或 MME 的 PS至 PS切换请求中的 PS容器信元中,所述 PS容器信元可以是, Source BSS to Target BSS Transparent Container信元,或者 Source RNC to Target RNC Transparent Container信元等。
可以将 CS无线资源信息包含在第四切换请求的容器信元中, 这个容器 信元可以命名为例如: CS 容器信元(例如上述发送给目标侧 RNC 的 CS Source RNC to Target RNC Transparent Container ), 或者第一容器信元等。 可选的, 目标侧 SGSN/MME向目标侧 RNC/eNodeB发送的第四切换请 求中还可以包含第二信息类型标识, 该第二信息类型标识用于指示第四切换 请求中包含的容器信元包含 CS无线资源信息, 该第二信息类型标识可以以 例如: "CS" 等形式表示, "CS" 表示包含 CS无线资源信息。
同样的, 可以将所述 PS无线资源信息包含在第五切换请求的容器信元 中, 这个容器信元可以命名为例如: PS 容器信元(例如上述发送给目标侧 eNodeB的 PS Source to Target Transparent Container ), 或者第二容器信 元等。
可选的, 目标侧 SGSN/MME向目标侧 RNC/eNodeB发送的第五切换请 求中还可以包含第三信息类型标识, 该第三信息类型标识用于指示第五切换 请求中包含的容器信元包含 PS无线资源信息, 该第三信息类型标识可以以 例如: "PS" 等形式表示, "PS" 表示包含 PS无线资源信息。
S404、 目标侧 RNC或 eNodeB根据第三切换请求中包含的第一信息类 型标识和 /或 CS容器信元和 /或 PS容器信元, 进行 CS至 PS切换和 PS至 PS切换; 或者, 目标侧 RNC或 eNodeB根据第四切换请求中包含的第二信 息类型标识和 /或 CS容器信元, 进行 CS至 PS切换; 或者, 目标侧 RNC或 eNodeB根据第五切换请求中包含的第三信息类型标识和 /或 PS容器信元, 进行 PS至 PS切换。
S405、 目标侧 RNC或 eNodeB向目标侧 SGSN或 MME返回第三切换请求 响应, 或者第四切换请求响应, 或者第五切换请求响应。
其中, 第三切换请求响应、 第四切换请求响应和第五切换请求响应均可 以是重置请求确认 ( Relocation Request Acknowledge ) 消息或者切换请求 确认 ( Handover Request Acknowledge ) 消息, 该 Relocation Request Acknowledge或者 Handover Request Acknowledge消息中的 Target RNC to Source RNC Transparent Container信元或者 Target to Source Transparent PS无线资源信息, 例如; 发送给源侧 BSC的 new BSS to old BSS information 信元, 或者发送给源侧 RNC的 Target RNC to Source RNC Transparent Container信元。 上述信元也可以按照步骤 403所述的方式来命名为可以区分 CS无线资源信息和 PS无线资源信息的不同容器信元。 至 PS切换请求响应, 例如 CS至 PS切换响应 (CS to PS HO Response ) 消 该 CS至 PS切换请求响应中包含目标侧 RNC或 eNodeB发送给源侧 BSC 或 RNC的 CS无线资源信息, 所述 CS无线资源信息包含在 CS容器信元中, 例 如: new BSS to old BSS information信元, 或者 Target RNC to Source RNC Transparent Container信元。
S406b、 目标 4则 SGSN或 MME向源 4则 SGSN发送 PS至 PS切换请求。向应, 例如转发重置响应 ( Forward Relocation Response ) 消息。
该 PS至 PS切换请求响应中包含目标侧 RNC或 eNodeB发送给源侧 BSC 或 RNC的 PS无线资源信息, 所述 PS无线资源信息包含在 PS容器信元中, 例 如: Target BSS to Source BSS Transparent Container信元, 或者 Target RNC to Source RNC Transparent Container信元。
其中, S406a和 S406b之间没有时序关系。
S407a、 源侧 MSC Server或 MSC/VLR向源侧 BSC或 RNC发送 CS至 PS 切换命令 (可以是 Handover Command或者 Relocation Command ) 。
S407b、 源侧 SGSN向源侧 BSC或 RNC发送 PS至 PS切换命令(可以是 Handover Command或者 Relocation Command ) 。
其中, S407a和 S407b之间没有时序关系。
S408、 源侧 BSC或 RNC向 UE发送切换命令(Handover Command ) 。 5409、 UE执行从源 4则网络到目标网络的切换, 向目标 jRNC或 eNodeB 发送切换确认消息 ( Handover Confirm ) 。
5410、 目标侧 RNC或 eNodeB向目标侧 SGSN或 MME发送切换确认消息 ( Handover Notify ) 。
S411a、 目标侧 SGSN或 MME向源侧 MSC Server或 MSC/VLR发送 CS至
PS切换完成通知 ( CS to PS Handover Complete Notification ) 消息。
S411 b、 目标侧 SGSN或 MME向源侧 SGSN发送转发重置完成( Forward Relocation Complete ) 消息或者转发重置完成通知 ( Forward Relocation Complete Notification ) 消息。
其中, S411a和 S411 b之间没有时序关系。
S412a、 源侧 MSC Server或 MSC/VLR向目标侧 SGSN或 MME发送 CS至 PS切换完成通知确认 ( CS to PS Handover Complete Notification Acknowledge ) 。
S412b、 源侧 SGSN 向目标侧 SGSN 或 MME 发送重置完成确认 ( Forward Relocation Complete Acknowledge )消息或者转发重置完成通知 确认 ( Forward Relocation Complete Notification Acknowledge ) 消息。
其中, S412a和 S412b之间没有时序关系。
其中, S406a- S412b的过程, 与前一实施例中 S306a- S312b的过程相 类似, 具体可参见前一实施例中的相关描述。
需要说明的是: 对于前述的各方法实施例, 为了简单描述, 故将其都表 述为一系列的动作组合, 但是本领域技术人员应该知悉, 本发明并不受所描 述的动作顺序的限制, 因为依据本发明, 某些步骤可以釆用其他顺序或者同 时进行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实施例均属 于优选实施例, 所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中, 对各个实施例的描述都各有侧重, 某个实施例中没有 详述的部分, 可以参见其他实施例的相关描述。 本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
图 5为本发明提供的核心网设备一个实施例的结构示意图,如图 5所示, 该核心网设备包括: 接收器 11、 处理器 12和发送器 13; 其中:
接收器 11 , 用于接收源侧核心网设备发送的电路交换域 CS至分组交换 域 PS切换请求和 /或 PS至 PS切换请求, CS至 PS切换请求中包含第一信 息, PS至 PS切换请求中包含第二信息, 第一信息或第二信息用于指示源侧 接入网设备在用户设备从源侧网络移动至目标侧网络过程中发起的切换类 型;
处理器 12, 用于根据第一信息或第二信息指示的切换类型, 与目标侧接 入网设备交互进行 CS至 PS切换和 /或 PS至 PS切换;
发送器 13, 用于向源侧核心网设备返回切换请求响应。
本发明提供的核心网设备的又一个实施例中, 处理器 12可以具体用于: 若接收器 11接收 CS至 PS切换请求, 则控制发送器 13向目标侧接入网设 备发送第一切换请求, 第一切换请求中包含第一信息; 或者, 若接收器 11接 收 PS至 PS切换请求, 则控制发送器 13向目标侧接入网设备发送第二切换 请求, 第二切换请求中包含第二信息;
相应的,接收器 11还可以用于: 目标侧接入网设备返回第一切换请求响 应和 /或第二切换请求响应。
其中,发送器 13向目标侧接入网设备发送的第一切换请求中可以包括第 一指示标识, 第一指示标识指示第一切换请求用于请求 CS至 PS切换; 和 / 或,发送器 13向目标侧接入网设备发送的第二切换请求中还可以包含第二指 示标识, 第二指示标识指示第二切换请求用于请求 PS至 PS切换。 另夕卜,接收器 11接收的第一切换请求响应中可以包含第三指示标识, 第 三指示标识指示第一切换请求响应用于响应 CS至 PS切换; 和 /或, 接收器 11接收的第二切换请求响应中还可以包含第四指示标识, 第四指示标识指示 第二切换请求响应用于响应 PS至 PS切换。
进一步的, 处理器 12还可以具体用于: 若接收器 11在先接收到的 CS 至 PS切换请求或 PS至 PS切换请求中分别包含的第一信息或第二信息指示 切换类型包括 CS至 PS切换和 PS至 PS切换, 则控制发送器 13在后到达 的 PS至 PS切换请求或 CS至 PS切换请求后, 向目标侧接入网设备发送第 三切换请求,第三切换请求中包含 CS至 PS切换请求中包含的 CS无线资源 信息以及 PS至 PS切换请求中包含的 PS无线资源信息;接收器 11还用于: 接收目标侧接入网设备返回的第三切换请求响应。 或者,
处理器 12具体用于: 若接收器 11在先接收到的 CS至 PS切换请求中 包含的第一信息指示切换类型包括 CS至 PS切换, 则控制发送器 13向目标 侧接入网设备发送第四切换请求, 第四切换请求中包含 CS无线资源信息; 接收器 11还用于: 接收目标侧接入网设备返回的第四切换请求响应; 或者, 处理器 12具体用于: 若接收器 11在先接收到的 PS至 PS切换请求中 包含的第二信息指示切换类型包括 PS至 PS切换, 则控制发送器 13向目标 侧接入网设备发送第五切换请求, 第五切换请求中包含 PS无线资源信息; 接收器 11还用于: 接收目标侧接入网设备返回的第五切换请求响应。
其中, 发送器 13向目标侧接入网设备发送的 CS无线资源信息和 PS无 线资源信息分别包含在第三切换请求中的两个容器信元中。
进一步的,发送器 13向目标侧接入网设备发送的第三切换请求中还包含 第一信息类型标识, 第一信息类型标识用于指示第三切换请求中包含的容器 信元包含 CS无线资源信息和 PS无线资源信息。
其中,发送器 13向目标侧接入网设备发送的第四切换请求中还包含第二 信息类型标识, 第二信息类型标识用于指示第四切换请求中包含的容器信元 包含 cs无线资源信息; 和 /或,
发送器 13 向目标侧接入网设备发送的第五切换请求中还包含第三信息 类型标识, 第三信息类型标识用于指示第五切换请求中包含的容器信元包含 PS无线资源信息。
上述实施例中, 第一信息或第二信息中包括 CS指示和 /或 PS指示, CS 指示表示切换类型包括 CS至 PS切换, PS指示表示切换类型包括 PS至 PS 切换;
或者, 第一信息或第二信息以切换连接数值表示, 第一信息切换连接数 值为 1表示用户设备具有 CS连接,切换类型包括 CS至 PS切换; 第二信息 切换连接数值为 1表示用户设备具有 PS连接,切换类型包括 PS至 PS切换; 第一信息或第二信息切换连接数值为 2表示用户设备具有 CS和 PS连接, 切换类型包括 CS至 PS切换和 PS至 PS切换。
本发明实施例提供的核心网设备, 具体为目标侧网络的核心网设备, 可 以是例如: SGSN或 MME等网络设备。 本发明实施例提供的核心网设备, 与本发明实施例提供的单信道语音呼叫连续性 SRVCC切换方法相对应, 为 单信道语音呼叫连续性 SRVCC切换方法的执行设备, 其执行方法的具体过 程可参见方法实施例, 在此不再赘述。
本实施例提供的核心网设备, 从源侧接入网设备接收的 CS至 PS切换 请求和 /或 PS至 PS切换请求中包括指示切换类型的信息, 从而使目标侧核 心网设备和目标侧接入网设备根据该信息进行相应的切换, 以保证 SRVCC 切换的顺利进行。
图 6为本发明提供的接入网设备一个实施例的结构示意图,如图 6所示, 包括: 处理器 21 ; 其中:
处理器 21 , 用于根据第一信息或第二信息指示的源侧接入网设备在用户 设备从源侧网络移动至目标侧网络过程中发起的切换类型, 与目标侧核心网 设备交互进行电路交换域 CS至分组交换域 PS切换和 /或 PS至 PS切换; 其中, 第一信息包含在源侧核心网设备向目标侧核心网设备发送的 CS 至 PS切换请求中, 第二信息包含在源侧核心网设备向目标侧核心网设备发 送的 PS至 PS切换请求中。
图 7为本发明提供的接入网设备又一个实施例的结构示意图, 如图 7所 示, 包括: 处理器 21 ; 进一步的, 还可以包括接收器 22和发送器 23;
作为一种实施方式,接收器 22可以用于: 接收目标侧核心网设备发送的 第一切换请求和 /或第二切换请求, 第一切换请求中包含第一信息, 第二切换 请求中包含第二信息;
相应的, 处理器 21可以具体用于: 若接收器 22在先接收到的第一切换 请求或第二切换请求中分别包含的第一信息或第二信息指示切换类型包括 CS至 PS切换和 PS至 PS切换, 则在接收器 22接收到在后到达的第二切 换请求或第一切换请求后,控制发送器 23向目标侧核心网设备返回第一切换 请求响应和第二切换请求响应; 或者,
若接收器 22接收到的第一切换请求中包含的第一信息指示切换类型为 CS至 PS切换, 则控制发送器 23向目标侧核心网设备返回在先接收到的第 一切换请求对应的第一切换请求响应; 或者,
若接收器 22接收到的第二切换请求中包含的第二信息指示切换类型为 PS至 PS切换, 则控制发送器 23向目标侧核心网设备返回在先接收到的第 二切换请求对应的第二切换请求响应。
作为另一种实施方式,接收器 22还可以用于: 接收目标侧核心网设备发 送的第三切换请求,第三切换请求中包含 CS至 PS切换请求中包含的 CS无 线资源信息以及 PS至 PS切换请求中包含的 PS无线资源信息; 处理器 21 还可以用于: 进行 CS至 PS切换和 PS至 PS切换, 并控制发送器 23向目 标侧核心网设备返回第三切换请求响应; 或者,
接收器 22还用于: 接收目标侧核心网设备发送的第四切换请求, 第四切 换请求中包含 CS无线资源信息; 处理器 21还用于: 进行 CS至 PS切换, 并控制发送器 23向目标侧核心网设备返回第四切换请求响应; 或者, 接收器 22还用于: 接收目标侧核心网设备发送的第五切换请求, 第五切 换请求中包含 PS无线资源信息; 处理器 21还用于: 进行 PS至 PS切换, 并控制发送器 23向目标侧核心网设备返回第五切换请求响应。
本发明实施例提供的接入网设备, 具体为目标侧网络的接入网设备, 可 以是例如: RNC、 eNodeB或 NodeB等网络设备。 本发明实施例提供的接入 网设备, 与本发明实施例提供的单信道语音呼叫连续性 SRVCC切换方法相 对应, 为单信道语音呼叫连续性 SRVCC切换方法的执行设备, 其执行方法 的具体过程可参见方法实施例, 在此不再赘述。
本实施例提供的接入网设备, 根据源侧核心网设备在切换请求中包含的 指示切换类型的信息,与目标侧核心网设备交互进行 CS至 PS切换和 /或 PS 至 PS切换, 保证 SRVCC切换的顺利进行。
图 8为本发明提供的接入网设备另一个实施例的结构示意图, 如图 8所 示, 包括: 处理器 31和发送器 32; 其中:
处理器 31 ,用于根据用户设备的业务情况和 /或源侧网络是否支持双传输 模式 DTM, 确定向源侧核心网设备发起电路交换域 CS至分组交换域 PS切 换和 /或 PS至 PS切换;
发送器 32 , 用于向源侧核心网设备发起第六切换请求和 /或第七切换请 求, 第六切换请求以使源侧核心网设备向目标侧核心网设备发送 CS 至 PS 切换请求, 第七切换请求以使源侧核心网设备向目标侧核心网设备发送 PS 至 PS切换请求;
其中, 第六切换请求中包含第一信息, 第七切换请求中包含第二信息,
CS至 PS切换请求中包含第一信息, PS至 PS切换请求中包含第二信息, 第一信息或第二信息用于指示源侧接入网设备在用户设备从源侧网络移动至 目标侧网络过程中发起的切换类型。
作为一种可行的实施方式,发送器 21发送的第一信息或第二信息中包括 CS指示和 /或 PS指示, CS指示表示切换类型包括 CS至 PS切换, PS指示 表示切换类型包括 PS至 PS切换;
或者, 第一信息或第二信息以切换连接数值表示, 第一信息切换连接数 值为 1表示用户设备具有 CS连接,切换类型包括 CS至 PS切换; 第二信息 切换连接数值为 1表示用户设备具有 PS连接,切换类型包括 PS至 PS切换; 第一信息或第二信息切换连接数值为 2表示用户设备具有 CS和 PS连接, 切换类型包括 CS至 PS切换和 PS至 PS切换。
本发明实施例提供的接入网设备, 具体为源侧网络的接入网设备, 可以 是 BSC或 RNC等网络设备。 本发明实施例提供的接入网设备, 与本发明实 施例提供的单信道语音呼叫连续性 SRVCC切换方法相对应, 为单信道语音 呼叫连续性 SRVCC切换方法的执行设备, 其执行方法的具体过程可参见方 法实施例, 在此不再赘述。
本实施例提供的接入网设备, 向源侧核心网设备发送的切换请求中包含 指示切换类型的信息, 源侧核心网设备向目标侧核心网设备发送 CS 至 PS 切换请求和 /或 PS至 PS切换请求中包含该信息, 从而使目标侧核心网设备 和目标侧接入网设备根据该协调信息进行相应的切换, 以保证 SRVCC切换 的顺利进行。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其 限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或 者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技 术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权 利 要求
1、 一种单信道语音呼叫连续性 SRVCC切换方法, 其特征在于, 包括: 接收源侧核心网设备发送的电路交换域 CS至分组交换域 PS切换请求 和 /或 PS至 PS切换请求, 所述 CS至 PS切换请求中包含第一信息, 所述 PS至 PS切换请求中包含第二信息, 所述第一信息或所述第二信息用于指示 源侧接入网设备在用户设备从源侧网络移动至目标侧网络过程中发起的切换 类型;
根据所述第一信息或所述第二信息指示的所述切换类型, 与目标侧接入 网设备交互进行 CS至 PS切换和 /或 PS至 PS切换;
向所述源侧核心网设备返回切换请求响应。
2、根据权利要求 1所述的方法, 其特征在于, 所述根据所述第一信息或 所述第二信息指示的所述切换类型,与目标侧接入网设备交互进行 CS至 PS 切换和 /或 PS至 PS切换, 具体包括:
目标侧核心网设备接收所述 CS至 PS切换请求, 则向所述目标侧接入 网设备发送第一切换请求, 所述第一切换请求中包含所述第一信息; 和 /或, 所述目标侧核心网设备接收所述 PS至 PS切换请求,则向所述目标侧接入网 设备发送第二切换请求, 所述第二切换请求中包含所述第二信息;
若所述目标侧接入网设备在先接收到的所述第一切换请求或所述第二切 换请求中分别包含的第一信息或第二信息指示所述切换类型包括 CS 至 PS 切换和 PS至 PS切换,则所述目标侧接入网设备接收到在后到达的所述第二 切换请求或所述第一切换请求后,进行所述 CS至 PS切换和 PS至 PS切换, 并向所述目标侧核心网设备返回第一切换请求响应和第二切换请求响应; 或 者,
若所述目标侧接入网设备接收到的所述第一切换请求中包含的第一信息 指示所述切换类型包括 CS至 PS切换, 则所述目标侧接入网设备接收到所 述第一切换请求后, 进行所述 CS至 PS切换, 并向所述目标侧核心网设备 返回第一切换请求响应; 或者,
若所述目标侧接入网设备接收到的所述第二切换请求中包含的第二信息 指示所述切换类型包括 PS至 PS切换,则所述目标侧接入网设备接收到所述 第二切换请求后,进行所述 PS至 PS切换,并向所述目标侧核心网设备返回 第二切换请求响应。
3、根据权利要求 2所述的方法, 其特征在于, 所述目标侧核心网设备向 所述目标侧接入网设备发送的所述第一切换请求中包含第一指示标识, 所述 第一指示标识指示所述第一切换请求用于请求 CS至 PS切换; 和 /或,
所述目标侧核心网设备向所述目标侧接入网设备发送的所述第二切换请 求中包含第二指示标识, 所述第二指示标识指示所述第二切换请求用于请求 PS至 PS切换。
4、根据权利要求 3所述的方法, 其特征在于, 所述目标侧接入网设备向 所述目标侧核心网设备返回的所述第一切换请求响应中包含第三指示标识, 所述第三指示标识指示所述第一切换请求响应用于响应 CS至 PS切换; 和 / 或,
所述目标侧接入网设备向所述目标侧核心网设备返回的所述第二切换请 求响应中包含第四指示标识, 所述第四指示标识指示所述第二切换请求响应 用于响应 PS至 PS切换。
5、根据权利要求 1所述的方法, 其特征在于, 所述根据所述第一信息或 所述第二信息指示的所述切换类型,与目标侧接入网设备交互进行 CS至 PS 切换和 /或 PS至 PS切换, 具体包括:
若所述目标侧核心网设备在先接收到的所述 CS至 PS切换请求或所述 PS至 PS切换请求中分别包含的第一信息或第二信息指示所述切换类型包括 CS至 PS切换和 PS至 PS切换, 则所述目标侧核心网设备接收到在后到达 的所述 PS至 PS切换请求或所述 CS至 PS切换请求后, 向所述目标侧接入 网设备发送第三切换请求, 所述第三切换请求中包含所述 CS至 PS切换请 求中包含的 CS无线资源信息以及所述 PS至 PS切换请求中包含的 PS无线 资源信息;所述目标侧接入网设备进行所述 CS至 PS切换和 PS至 PS切换, 并向所述目标侧核心网设备返回第三切换请求响应; 或者,
若所述目标侧核心网设备在先接收到的所述 CS至 PS切换请求中包含 的第一信息指示所述切换类型包括 CS至 PS切换, 则所述目标侧核心网设 备向所述目标侧接入网设备发送第四切换请求, 所述第四切换请求中包含所 述 CS无线资源信息; 所述目标侧接入网设备进行所述 CS至 PS切换, 并向 所述目标侧核心网设备返回第四切换请求响应; 或者,
若所述目标侧核心网设备在先接收到的所述 PS至 PS切换请求中包含的 第二信息指示所述切换类型包括 PS至 PS切换,则所述目标侧核心网设备向 所述目标侧接入网设备发送第五切换请求,所述第五切换请求中包含所述 PS 无线资源信息; 所述目标侧接入网设备进行所述 PS至 PS切换,并向所述目 标侧核心网设备返回第五切换请求响应。
6、 根据权利要求 5所述的方法, 其特征在于, 所述 CS无线资源信息和 所述 PS无线资源信息分别包含在所述目标侧核心网设备向所述目标侧接入 网设备发送的第三切换请求中的两个容器信元中。
7、根据权利要求 5或 6所述的方法, 其特征在于, 所述目标侧核心网设 备向所述目标侧接入网设备发送的第三切换请求中还包含第一信息类型标 识, 所述第一信息类型标识用于指示所述第三切换请求中包含的容器信元包 含所述 CS无线资源信息和所述 PS无线资源信息。
8、根据权利要求 5所述的方法, 其特征在于, 所述目标侧核心网设备向 所述目标侧接入网设备发送的第四切换请求中还包含第二信息类型标识, 所 述第二信息类型标识用于指示所述第四切换请求中包含的容器信元包含 CS 无线资源信息; 和 /或,
所述目标侧核心网设备向所述目标侧接入网设备发送的第五切换请求中 还包含第三信息类型标识, 所述第三信息类型标识用于指示所述第五切换请 求中包含的容器信元包含 PS无线资源信息。
9、 根据权利要求 1 -8任一项所述的方法, 其特征在于, 所述第一信息或 所述第二信息中包括 CS指示和 /或 PS指示, 所述 CS指示表示所述切换类 型包括 CS至 PS切换,所述 PS指示表示所述切换类型包括 PS至 PS切换; 或者, 所述第一信息或所述第二信息以切换连接数值表示, 所述第一信 息切换连接数值为 1表示所述用户设备具有 CS连接,所述切换类型包括 CS 至 PS切换; 所述第二信息切换连接数值为 1表示所述用户设备具有 PS连 接,所述切换类型包括 PS至 PS切换; 所述第一信息或第二信息切换连接数 值为 2表示所述用户设备具有 CS和 PS连接, 所述切换类型包括 CS至 PS 切换和 PS至 PS切换。
10、 一种核心网设备, 其特征在于, 包括:
接收器, 用于接收源侧核心网设备发送的电路交换域 CS至分组交换域 PS切换请求和 /或 PS至 PS切换请求, 所述 CS至 PS切换请求中包含第一 信息,所述 PS至 PS切换请求中包含第二信息,所述第一信息或所述第二信 息用于指示源侧接入网设备在用户设备从源侧网络移动至目标侧网络过程中 发起的切换类型;
处理器, 用于根据所述第一信息或所述第二信息指示的所述切换类型, 与目标侧接入网设备交互进行 CS至 PS切换和 /或 PS至 PS切换;
发送器, 用于向所述源侧核心网设备返回切换请求响应。
11、根据权利要求 10所述的核心网设备, 其特征在于, 所述处理器具体 用于: 若所述接收器接收所述 CS至 PS切换请求, 则控制所述发送器向所 述目标侧接入网设备发送第一切换请求, 所述第一切换请求中包含所述第一 信息; 或者, 若所述接收器接收所述 PS至 PS切换请求, 则控制所述发送器 向所述目标侧接入网设备发送第二切换请求, 所述第二切换请求中包含所述 第二信息;
所述接收器还用于: 所述目标侧接入网设备返回第一切换请求响应和 /或 第二切换请求响应。
12、根据权利要求 11所述的核心网设备, 其特征在于, 所述发送器向所 述目标侧接入网设备发送的所述第一切换请求中包含第一指示标识, 所述第 一指示标识指示所述第一切换请求用于请求 CS至 PS切换; 和 /或,
所述发送器所述目标侧接入网设备发送的所述第二切换请求中包含第二 指示标识,所述第二指示标识指示所述第二切换请求用于请求 PS至 PS切换。
13、 根据权利要求 12 所述的核心网设备, 其特征在于, 所述接收器接 收的所述第一切换请求响应中包含第三指示标识, 所述第三指示标识指示所 述第一切换请求响应用于响应 CS至 PS切换; 和 /或,
所述接收器接收的所述第二切换请求响应中包含第四指示标识, 所述第 四指示标识指示所述第二切换请求响应用于响应 PS至 PS切换。
14、根据权利要求 11所述的核心网设备, 其特征在于, 所述处理器具体 用于: 若所述接收器在先接收到的所述 CS至 PS切换请求或所述 PS至 PS 切换请求中分别包含的第一信息或第二信息指示所述切换类型包括 CS至 PS 切换和 PS至 PS切换, 则控制所述发送器在后到达的所述 PS至 PS切换请 求或所述 CS至 PS切换请求后, 向所述目标侧接入网设备发送第三切换请 求,所述第三切换请求中包含所述 CS至 PS切换请求中包含的 CS无线资源 信息以及所述 PS至 PS切换请求中包含的 PS无线资源信息;所述接收器还 用于: 接收所述目标侧接入网设备返回的第三切换请求响应; 或者,
所述处理器具体用于: 若所述接收器在先接收到的所述 CS至 PS切换 请求中包含的第一信息指示所述切换类型包括 CS至 PS切换, 则控制所述 发送器向所述目标侧接入网设备发送第四切换请求, 所述第四切换请求中包 含所述 CS无线资源信息; 所述接收器还用于: 接收所述目标侧接入网设备 返回的第四切换请求响应; 或者,
所述处理器具体用于:若所述接收器在先接收到的所述 PS至 PS切换请 求中包含的第二信息指示所述切换类型包括 PS至 PS切换,则控制所述发送 器向所述目标侧接入网设备发送第五切换请求, 所述第五切换请求中包含所 述 PS无线资源信息; 所述接收器还用于: 接收所述目标侧接入网设备返回 的第五切换请求响应。
15、 根据权利要求 14 所述的核心网设备, 其特征在于, 所述发送器向 所述目标侧接入网设备发送的所述 CS无线资源信息和所述 PS无线资源信 息分别包含在所述第三切换请求中的两个容器信元中。
16、 根据权利要求 14或 15所述的核心网设备, 其特征在于, 所述发送 器向所述目标侧接入网设备发送的所述第三切换请求中还包含第一信息类型 标识, 所述第一信息类型标识用于指示所述第三切换请求中包含的容器信元 包含所述 CS无线资源信息和所述 PS无线资源信息。
17、 根据权利要求 14 所述的核心网设备, 其特征在于, 所述发送器向 所述目标侧接入网设备发送的第四切换请求中还包含第二信息类型标识, 所 述第二信息类型标识用于指示所述第四切换请求中包含的容器信元包含 CS 无线资源信息; 和 /或,
所述发送器向所述目标侧接入网设备发送的第五切换请求中还包含第三 信息类型标识, 所述第三信息类型标识用于指示所述第五切换请求中包含的 容器信元包含 PS无线资源信息。
18、 根据权利要求 10-17任一项所述的核心网设备, 其特征在于, 所述 第一信息或所述第二信息中包括 CS指示和 /或 PS指示, 所述 CS指示表示 所述切换类型包括 CS至 PS切换, 所述 PS指示表示所述切换类型包括 PS 至 PS切换;
或者, 所述第一信息或所述第二信息以切换连接数值表示, 所述第一信 息切换连接数值为 1表示所述用户设备具有 CS连接,所述切换类型包括 CS 至 PS切换; 所述第二信息切换连接数值为 1表示所述用户设备具有 PS连 接,所述切换类型包括 PS至 PS切换; 所述第一信息或第二信息切换连接数 值为 2表示所述用户设备具有 CS和 PS连接, 所述切换类型包括 CS至 PS 切换和 PS至 PS切换。
19、 一种接入网设备, 其特征在于, 包括:
处理器, 用于根据第一信息或第二信息指示的源侧接入网设备在用户设 备从源侧网络移动至目标侧网络过程中发起的切换类型, 与目标侧核心网设 备交互进行电路交换域 CS至分组交换域 PS切换和 /或 PS至 PS切换; 其中, 所述第一信息包含在源侧核心网设备向所述目标侧核心网设备发 送的 CS至 PS切换请求中, 所述第二信息包含在所述源侧核心网设备向所 述目标侧核心网设备发送的 PS至 PS切换请求中。
20、 根据权利要求 19所述的接入网设备, 其特征在于, 还包括: 接收器, 用于接收目标侧核心网设备发送的第一切换请求和 /或第二切换 请求, 所述第一切换请求中包含所述第一信息, 所述第二切换请求中包含所 述第二信息;
所述处理器具体用于: 若所述接收器在先接收到的所述第一切换请求或 所述第二切换请求中分别包含的第一信息或第二信息指示所述切换类型包括 CS至 PS切换和 PS至 PS切换, 则在所述接收器接收到在后到达的所述第 二切换请求或所述第一切换请求后, 控制所述发送器向所述目标侧核心网设 备返回第一切换请求响应和第二切换请求响应; 或者,
若所述接收器接收到的所述第一切换请求中包含的第一信息指示所述切 换类型为 CS至 PS切换, 则控制所述发送器向所述目标侧核心网设备返回 在先接收到的所述第一切换请求对应的第一切换请求响应; 或者,
若所述接收器接收到的所述第二切换请求中包含的第二信息指示所述切 换类型为 PS至 PS切换,则控制所述发送器向所述目标侧核心网设备返回在 先接收到的所述第二切换请求对应的第二切换请求响应。
21、 根据权利要求 20 所述的接入网设备, 其特征在于, 还包括: 接收 器, 用于接收所述目标侧核心网设备发送的第三切换请求, 所述第三切换请 求中包含所述 CS至 PS切换请求中包含的 CS无线资源信息以及所述 PS至 PS切换请求中包含的 PS无线资源信息; 所述处理器还用于: 进行所述 CS 至 PS切换和 PS至 PS切换,并控制所述发送器向所述目标侧核心网设备返 回第三切换请求响应; 或者,
所述接收器还用于: 接收所述目标侧核心网设备发送的第四切换请求, 所述第四切换请求中包含所述 CS无线资源信息; 所述处理器还用于: 进行 所述 CS至 PS切换, 并控制所述发送器向所述目标侧核心网设备返回第四 切换请求响应; 或者,
所述接收器还用于: 接收所述目标侧核心网设备发送的第五切换请求, 所述第五切换请求中包含所述 PS无线资源信息; 所述处理器还用于: 进行 所述 PS至 PS切换,并控制所述发送器向所述目标侧核心网设备返回第五切 换请求响应。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109548181A (zh) * 2019-01-10 2019-03-29 Oppo广东移动通信有限公司 信息获取方法、装置、存储介质及移动终端

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101574007A (zh) * 2006-12-28 2009-11-04 诺基亚公司 电路交换呼叫到分组交换呼叫以及分组交换呼叫到电路交换呼叫的切换
WO2010052343A2 (en) * 2008-11-10 2010-05-14 Telefonaktiebolaget L M Ericsson (Publ) Srvcc from cs to lte
WO2011098137A1 (en) * 2010-02-12 2011-08-18 Telefonaktiebolaget L M Ericsson (Publ) Handover from circuit switched to packet switched
CN102238679A (zh) * 2010-05-04 2011-11-09 中兴通讯股份有限公司 单信道语音连续性实现方法及***

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101656994B (zh) * 2008-08-22 2014-11-05 华为技术有限公司 业务切换及网络资源分配方法、网络节点及移动性管理实体设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101574007A (zh) * 2006-12-28 2009-11-04 诺基亚公司 电路交换呼叫到分组交换呼叫以及分组交换呼叫到电路交换呼叫的切换
WO2010052343A2 (en) * 2008-11-10 2010-05-14 Telefonaktiebolaget L M Ericsson (Publ) Srvcc from cs to lte
WO2011098137A1 (en) * 2010-02-12 2011-08-18 Telefonaktiebolaget L M Ericsson (Publ) Handover from circuit switched to packet switched
CN102238679A (zh) * 2010-05-04 2011-11-09 中兴通讯股份有限公司 单信道语音连续性实现方法及***

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109548181A (zh) * 2019-01-10 2019-03-29 Oppo广东移动通信有限公司 信息获取方法、装置、存储介质及移动终端

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