WO2008017237A1 - Procede, systeme et serveur d'application pour le routage d'appel de domaine circuit vers un domaine paquet - Google Patents

Procede, systeme et serveur d'application pour le routage d'appel de domaine circuit vers un domaine paquet Download PDF

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Publication number
WO2008017237A1
WO2008017237A1 PCT/CN2007/002265 CN2007002265W WO2008017237A1 WO 2008017237 A1 WO2008017237 A1 WO 2008017237A1 CN 2007002265 W CN2007002265 W CN 2007002265W WO 2008017237 A1 WO2008017237 A1 WO 2008017237A1
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WIPO (PCT)
Prior art keywords
domain
packet domain
call
packet
vcc
Prior art date
Application number
PCT/CN2007/002265
Other languages
English (en)
French (fr)
Inventor
Jie Xu
Yan Li
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008017237A1 publication Critical patent/WO2008017237A1/zh
Priority to US12/356,986 priority Critical patent/US20090129318A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1083—In-session procedures
    • H04L65/1095—Inter-network session transfer or sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking
    • H04Q3/0045—Provisions for intelligent networking involving hybrid, i.e. a mixture of public and private, or multi-vendor systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

Definitions

  • the present invention relates to the field of communications, and more particularly to techniques for routing circuit domain calls to packet domains. Background technique
  • the user home network entity HLR Home Location Register; Visiting the network triggers intelligent logic to the SCP (Service Control Point) for business control.
  • SCP Service Control Point
  • the MSC Mobile Service Switch Center
  • ORIGTRIG Origination Trigger
  • ORREQ oil provisioned by the user
  • the HLR determines that the user is a smart user but the sender is based on the received OR EQ signaling (the received initial call request signaling does not have a parameter identifying the MSC intelligent processing capability or a parameter indicating that the MSC has no intelligent processing capability). If the MSC does not have intelligent processing capability, the MSC forwards the initial call request signaling to the SCP that the user subscribes to.
  • the SCP After receiving the initial call request message, the SCP performs service control and then returns the corresponding service control result (continue call, abort call, play to the user, call redirection, etc.).
  • the service control result is forwarded to the MSC through the HLR. After receiving the service control result, the MSC performs subsequent corresponding processing according to the service control result.
  • the MSC of the calling network receives a call request to the called user.
  • the LOCREQ (Location Request) signaling is sent to the HLR of the called user, and the location of the called user is requested to be queried.
  • the called user's HLR determines that the called user is a smart user according to the received location request signaling (the received LOCREQ signaling does not have a parameter identifying the MSC intelligent processing capability or contains a parameter indicating that the MSC has no intelligent processing capability). However, the MSC that sends the message does not have intelligent processing capability, and instead of the MSC, sending SERVREQ (Service Request) signaling to the SCP requires service control.
  • the received location request signaling the received LOCREQ signaling does not have a parameter identifying the MSC intelligent processing capability or contains a parameter indicating that the MSC has no intelligent processing capability.
  • SERVREQ Service Request
  • the SCP After receiving the SCP, the SCP performs service control according to the subscription status of the user, and returns a corresponding control result (abort call, resume call, call redirection, etc.) to the HLR.
  • the HLR returns a corresponding response to the MSC according to the control result returned by the SCP.
  • the MSC After receiving the response, the MSC performs subsequent operations based on the control results in the response.
  • the prior art related to the present invention provides a method of routing a call of a circuit domain to a packet domain, the method being proposed in accordance with the 3GPP2 standard, which requires the network to have intelligent network processing capabilities.
  • the implementation process is shown in Figure 3, including the following steps:
  • the user initiates a call on the circuit domain network.
  • the MSC/VLR Visitor Location Register
  • the WIN SCP forwards the ORREQ message to the control entity VCC AS (Application Server; Application Server) of the packet domain network.
  • VCC AS 3 ⁇ 4 records the original called number of the user, and then modifies the called number as an IMS (IP Multimedia / Subsystem; IP Multimedia Subsystem) domain access number, and returns it to WIN.
  • IMS IP Multimedia / Subsystem
  • IP Multimedia Subsystem IP Multimedia Subsystem
  • the 'MSC' routes the call to the MGCF (Media Gateway/Control Function; Media Gateway Control Entity) of the IMS domain based on the received IMS domain access number.
  • MGCF Media Gateway/Control Function; Media Gateway Control Entity
  • the MGC ⁇ constructs a SIP (Session Initiation Protocol) session whose destination address is the IMS domain routing number and triggers the SIP call to the VCC AS through the I-CSCF (Call Continuity Control Function). .
  • SIP Session Initiation Protocol
  • the VCC AS After receiving the session, the VCC AS initiates a new session in the IMS domain with its original address as the original called number.
  • the circuit domain call is routed to the IMS domain and the called number is restored.
  • the MSC triggers the call initiated by the user in the circuit domain to the VCC AS by means of intelligent triggering.
  • the MSC is required to have the processing capability of the intelligent network, so that the upgrade and maintenance costs of the network device are relatively increased. Summary of the invention
  • the present invention provides a method, system and application server for routing a circuit domain call to a packet domain entity.
  • a call of a circuit domain is provided regardless of whether the MSC supports intelligent processing capability or does not support intelligent processing capability.
  • the present invention provides a method of routing a circuit domain call to a packet domain, including:
  • the application server VCC AS in the packet domain obtains the original called number by interacting with the home location register HLR of the circuit domain, and assigns a packet domain routing number to the call of the circuit domain;
  • the VCC AS in the packet domain After the packet domain call with the packet domain routing number as the called identity arrives at the VCC AS in the packet domain, the VCC AS in the packet domain initiates a corresponding packet domain according to the acquired original called number. Call.
  • the present invention also provides a system for routing a circuit domain call to a packet domain, comprising: an application server VCC AS of the packet domain, configured to obtain an original called number by interacting with a home location register HLR of the circuit domain, and The call domain of the circuit domain is assigned a corresponding packet domain routing number; and, after the packet domain call whose packet domain routing number is the called identity arrives at the VCC AS in the packet domain, is used to initiate according to the acquired original called number Corresponding packet domain call;
  • the HLR of the circuit domain is configured to send the original called number corresponding to the call of the circuit domain to the VCC AS of the packet domain; and send the packet domain routing number assigned by the VCC AS in the packet domain to the circuit Domain network.
  • the embodiment of the present invention further provides an application server VCC AS that routes a circuit domain call to a packet domain, including:
  • a call control unit configured to receive the transmitted information of the home location register HLR of the circuit domain, obtain the original called number therefrom, and allocate a corresponding packet domain routing number for the circuit domain call; and, when the packet domain routing number is used After the packet domain call called the identity arrives, the corresponding packet domain call is initiated according to the obtained original called number;
  • the transmission unit is configured to transmit a packet domain call initiated by the call control unit. It can be seen from the technical solution provided by the present invention that the VCC AS in the packet domain obtains the original called number through interaction with the HLR of the circuit domain, and allocates the packet domain routing number for the call of the circuit domain, therefore, After the call of the circuit domain arrives at the VCC AS in the packet domain according to the packet domain routing number, the VCC AS can initiate a new SIP session according to the original called number it acquires. Since the VCC AS acquires call information through interaction with the HLR, rather than through interaction with the SCP. Therefore, the MSC only needs to communicate with the HLR without communicating with the SCP, so the present invention does not require the MSC to have intelligent processing capabilities. DRAWINGS
  • FIG. 1 is a flowchart of a calling party when the visited network does not support intelligence provided by the background technology
  • FIG. 2 is a flowchart of a called party when the visited network does not support intelligence provided by the background technology
  • 3 is a flow chart of routing a call of a circuit domain to a packet domain when the network has intelligent network processing capability provided by the background technology
  • Figure 4 is a flow chart of the first embodiment of the present invention.
  • Figure 5 is a flow chart of a second embodiment of the present invention.
  • Figure 6 is a block diagram showing the structure of a third embodiment of the present invention.
  • FIG. 7 is a block diagram showing the structure of a fifth embodiment of the present invention. detailed description
  • the embodiment of the present invention receives the circuit domain call control signaling sent by the HLR through a packet domain, such as a VCC AS (Application Server; application server) in the IMS domain, saves the original called number corresponding to the call, and returns the packet domain routing number.
  • a packet domain such as a VCC AS (Application Server; application server) in the IMS domain
  • the IMS domain routing number the call is routed from the circuit domain to the packet domain, such as an IMS domain entity; and after receiving the call signaling in the packet domain, such as the IMS domain, a new packet is initiated according to the previously saved original called number.
  • the first embodiment of the present invention provides a calling procedure for routing a call in a circuit domain to a packet domain.
  • the VCC AS in the packet domain passes and The HLR of the circuit domain interacts to obtain the original called number, and assigns a corresponding packet domain routing number to the call, and returns the packet domain routing number to the MSC of the circuit domain through the HLR of the circuit domain;
  • the VCC AS in the packet domain initiates a new packet domain call, such as a SIP session, according to the acquired original called number.
  • the specific implementation process is as shown in FIG. 4, and includes the following steps: Step 501: The calling user initiates a call in the circuit domain, and the called number is another night i, a number of the terminal MS2.
  • Step 502 The MSC is providing services for the user: (the MSC may not have intelligent processing capability, and may also have intelligent processing capability.) After determining that the user subscribes to the initial call triggering service, triggering the control signaling of the originating call request ORREQ To the HLR to which the calling user belongs.
  • Step 503 After receiving the control signaling of the initial call request, the HLR determines that the user subscribes to the special service, and sends the call related information such as the original called number to the user to sign the call through the call control signaling.
  • the group domain such as the IMS domain application server VCC AS, requests the VCC AS to allocate a packet domain routing number, such as an IMS domain routing number.
  • the call control signaling may be MAP (Mobile Application Protocol) signaling of the originating request OR EQ forwarded by the HLR, or other types of signaling, such as Diameter signaling, CAP (CAMEL Application Part; CAMEL User Part, where CAMEL is the abbreviation of Customised Application for Mobile network Enhanced Logic mobile network enhanced custom service logic.
  • MAP Mobile Application Protocol
  • CAP CAMEL Application Part; CAMEL User Part, where CAMEL is the abbreviation of Customised Application for Mobile network Enhanced Logic mobile network enhanced custom service logic.
  • Step 504 The VCC AS receives the call control signaling, such as the initial call request signaling, and saves the original called number in the call control signaling, and the call control signaling related information, such as a calling user. Number or routing information, etc.
  • Step 505 The VCC AS returns a response message to the HLR, and carries a packet domain routing number, such as an IMS domain routing number, in the response message, indicating that the call is redirected.
  • a packet domain routing number such as an IMS domain routing number
  • Step 506 The HLR forwards the response message sent by the VCC AS to the MSC.
  • Step 507 The MSC obtains a packet domain routing number, such as an IMS domain routing number, according to the received response message, and routes the call of the calling user to the packet domain according to the packet domain routing number, such as the IMS domain routing number.
  • a packet domain routing number such as an IMS domain routing number
  • the IMS domain routing number such as the IMS domain routing number.
  • the ingress network element MGCF of the IMS domain For example, the ingress network element MGCF of the IMS domain.
  • Step 508 the MGCF uses the packet domain routing number, such as the IMS domain routing number as the destination address, to initiate a new packet domain call, such as a SIP session, in the packet domain, such as the IMS domain;
  • the packet domain call is sent to the VCC AS of the packet domain;
  • the new packet domain call signaling may also be forwarded to the VCC AS of the packet domain via the I/S-CSCF network element.
  • Step 509 After receiving the call signaling of the packet domain, the VCC AS associates with the saved original called number information according to the call signaling of the packet domain, and uses the originally saved original called number as the destination address.
  • a packet domain such as an IMS domain
  • initiate a new packet domain call such as a SIP session.
  • the VCC AS may be associated with the saved original called number information according to the calling subscriber number carried in the call signaling of the packet domain; or may be related to the call control signaling, such as the calling party.
  • the user number or routing information and the like are associated with the saved original called number information.
  • a second embodiment of the present invention provides a second method for routing a call of a circuit domain to a called domain in a packet domain.
  • a call of a circuit domain arrives at the MSC, the MSC belongs to the called user.
  • the HLR of the circuit domain requests the location of the called user; the HLR of the circuit domain sends the original called number to the VCC AS in the packet domain, and the VCC AS returns the corresponding packet domain routing number according to the original called number;
  • the VCC AS in the packet domain initiates a new packet domain call, such as a SIP session, according to the acquired original called number.
  • the specific implementation process is shown in Figure 5, including the following steps:
  • Step 601 The call of the circuit domain arrives at the MSC, and the called number is the number of the called user MS2.
  • the MSC may be the serving MSC of the calling network, or may be the MS of the called network (: The MSC may not have intelligent processing capability, and may also have intelligent processing capability.
  • Step 602 The MSC sends a call control signaling of a location request (LOCREQ) to the HLR to which the called user belongs, and requests to query the route of the called user.
  • LOCREQ location request
  • Step 603 After receiving the call control signaling of the location request, the HLR determines that the called user subscribes to the special control service, and sends a service request to the packet domain that the user subscribes to, such as the IMS domain application server VCC AS. Request, SERVREQ) call control signaling for service control.
  • the HLR may also use other MAP signaling, such as directly forwarding the LOCREQ to the VCC AS, or sending a Routing Request (ROUTREQ) message to the VCC AS, or using other types of signaling such as CAP signaling, Diameter signaling, etc.
  • the original call information is brought to the VCC AS, and a packet domain routing number, such as an IMS domain routing number, is applied to the VCC AS.
  • Step 604 After receiving the call control signaling sent by the HLR, the VCC AS saves the original called number in the call control signaling, and information related to the call control signaling, such as a calling user. Number or routing number, etc., and assign the corresponding packet domain routing number to the call, such as the IMS domain routing number.
  • Step 605 The VCCAS returns a response message to the HLR, and carries the packet domain routing number, such as an IMS domain routing number, by using the response message.
  • Step 606 The HLR forwards the response message to the MSC.
  • Step 607 After receiving the response message, the MSC acquires a packet domain routing number, such as an IMS domain routing number, and routes the call, such as an initial address message, to the packet according to the packet domain routing number, such as an IMS domain routing number.
  • the domain such as the ingress network element MGCF of the IMS domain.
  • Step 608 the MGCF uses a packet domain routing number, such as an IMS domain routing number as a destination address, to initiate a new packet domain call, such as a SIP session, in a packet domain, such as an IMS domain; and then group the packet by packet domain call signaling.
  • the domain call is sent to the VCC AS of the packet domain.
  • the new packet domain call signaling may also be forwarded to the VCC AS of the packet domain via the I/S-CSCF network element.
  • Step 609 After receiving the call signaling of the packet domain, the VCC AS associates with the saved original called number information according to the call signaling of the packet domain, and uses the originally saved original called number as the destination address.
  • a packet domain such as an IMS domain
  • initiate a new packet domain call such as a SIP session.
  • the VCC AS may be associated with the saved original called number information according to the calling party number carried in the call signaling of the packet domain; or may be related to the call signaling related information, such as a calling party number or routing information, etc. Link to the saved original called number information.
  • the first embodiment and the second embodiment (see FIG. 4 and FIG. 5) of the present invention all describe the flow in the case where the VCC AS and the SCP are combined.
  • the VCC AS can be combined with the SCP. Set together, it can also be a stand-alone device. If the VCC AS is separated from the SCP as a standalone device, messages exchanged between the HLR and the VCC AS, such as ORREQ, SERVREQ, etc., will be forwarded through the intermediate SCP (the mechanism is shown in Figure 3).
  • a third embodiment of the present invention provides a system for routing a circuit domain call to a packet domain, and the structure thereof is as shown in FIG. 6, including: a VCC AS of a packet domain, an HLR of a circuit domain, and an MSC; wherein the HLR includes signaling Construction unit and signaling transmission unit.
  • the MSC may not have intelligent network processing capability, and may also have intelligent network processing capability.
  • the MSC sends corresponding call control signaling to the HLR of the circuit domain according to the user's call.
  • the HLR encapsulates the original called number into MAP signaling, Diameter signaling, or CAP signaling by using the signaling construction unit, and uses the signaling transmission unit to
  • the signaling constructed by the signaling construction unit is sent to the VCC AS of the packet domain.
  • the VCC AS of the packet domain receives the transmitted information of the HLR of the circuit domain, and obtains the original called number therefrom, and assigns a corresponding packet domain routing number to the call, and returns the packet domain routing number to the HLR.
  • the HLR of the circuit domain transmits the packet domain routing number to the MSC.
  • the MSC routes the call of the circuit domain to the packet domain network according to the packet domain routing number.
  • the VCC AS in the packet domain After receiving the call, the VCC AS in the packet domain associates the original called number corresponding to the call in the saved original called number according to the call, and initiates according to the original called number associated with the call.
  • a new packet domain call such as a SIP session.
  • a fourth embodiment of the present invention provides another system for routing circuit domain calls to a packet domain, the structure of which lacks the MSC over the third embodiment. It includes the VCC AS of the packet domain and the HLR of the circuit domain.
  • the HLR includes a signaling construction unit and a signaling transmission unit.
  • the HLR After receiving the call control signaling of the circuit domain, the HLR encapsulates the original called number into the MAP signaling, the Diameter signaling, or the CAP signaling by using the signaling construction unit, and uses the signaling transmission unit to The signaling constructed by the signaling construction unit is sent to the VCC AS of the packet domain.
  • the VCC AS of the packet domain receives the transmitted information of the HLR of the circuit domain, obtains the original called number therefrom, and assigns a corresponding packet domain routing number to the call, and returns the packet domain routing number to the HLR.
  • the HLR of the circuit domain transmits the packet domain routing number to the circuit domain network.
  • the VCC AS in the packet domain associates the call corresponding to the call in the saved original called number.
  • the original called number and initiate a new packet domain call, such as a SIP session, based on the original called number associated with it.
  • a fifth embodiment of the present invention provides a VCC AS that routes a circuit domain call to a packet domain, the structure of which is shown in Figure 7, the VCC AS including a call control unit and a transmission unit.
  • the call control unit receives the transmitted information of the HLR of the circuit domain, and obtains the original called number therefrom, and assigns a corresponding packet domain routing number to the circuit domain call; and, when routing in the packet domain After the packet domain call whose number is the called identity arrives, the call is associated with the obtained original called number according to the packet domain call, and the corresponding called number is used as the destination address, and a corresponding new packet domain call is initiated.
  • the transmission unit transmits the packet domain call initiated by the call control unit.
  • the VCC AS may associate to the saved original called number information according to the calling party number carried in the call signaling of the packet domain, when the call is associated with the obtained original called number according to the packet domain call; Corresponding to the saved original called number information according to the packet domain routing number or the like.
  • the embodiment of the present invention can also be applied to a WCDMA network.
  • the call control signaling may be replaced with the corresponding signaling in the WCDMA network.
  • the call control signaling of the location request Location Request, LOCREQ is replaced with the WCDMA network.
  • Control signaling of the application routing information Send-Routing-Info, SRI).
  • the VCC AS in the packet domain obtains the original called number through interaction with the HLR of the circuit domain, and therefore, when the call of the circuit domain arrives according to the routing number of the packet domain After the VCC AS in the packet domain, the VCC AS can initiate a new SIP session according to the original called number it acquires. Since the VCC AS obtains call information through interaction with the HLR, rather than through interaction with the SCP. Therefore, the MSC only needs to communicate with the HLR without communicating with the SCP, so the present invention does not require the MSC to have intelligent processing capabilities. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

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Description

将电路域呼叫路由至分组域的方法、 系统和应用服务器 技术领域
本发明涉及通信领域， 尤其涉及将电路域呼叫路由至分组域的技术。 背景技术
随着先进的分组交换技术的出现 , 基于所述分组交换技术的分组域网络 迅猛发展起来， 而基于电路交换的传统电路域网络将会逐渐趋于消亡， 但是 目前仍然存在分组域网络和电路域网络并存的阶段， 在这种情况下， 需要将 发生在传统电路域网络的呼叫转接至分組域网络进行控制。 例如， 当同时支 持电路域网络接入和分组域网络接入的双模终端在两种网络下进行的业务， 如终端在通话状态从电路域向分组域发起切换流程时， 运营商通常通过插入 在终端的呼叫路径当中的基于分组网络的实体来控制终端在两种网络下进行 的业务。 而对于传统的电路域终端来说， 运营商出于节约成本的考虑， 有可 能需要由分組网络来对这些终端的呼叫进行统一管理， 因此需要将它们在电 路域发生的呼叫转接至分组网络。
另外， 在 CDMA ( Code Division Multiple Access; 码分多址）智能网络协 议中， 定义了当拜访网络不支持智能处理能力的时候， 由用户归属网络实体 HLR ( Home Location Register; 归属位置寄存器）来代替拜访网络触发智能逻 辑到 SCP ( Service Control Point; 业务控制点）进行业务控制的方法。 下面分 别针对这种情况下的主叫流程和被叫流程分别进行描述。
当拜访网络不支持智能时的主叫流程如图 1所示， 包括：
为用户提供服务的 MSC ( Mobile Service Switch Center; 移动业务交换中 心）检测到用户发起始呼后， 触发用户事先签约的 ORIGTRIG ( Origination Trigger; 始呼触发器）， 发送 ORREQ ( Origination Request; 始呼请求 )信令 到 HLR; HLR根据接收到的 OR EQ信令（收到的始呼请求信令中没有标识 MSC 智能处理能力的参数或含有明确指示此 MSC没有智能处理能力的参数。）判 断到用户是智能用户但是发送方 MSC没有智能处理能力， 则代替 MSC向用 户签约的 SCP转发始呼请求信令。
SCP 收到始呼请求信后进行业务控制， 然后返回相应业务控制结果（继 续呼叫、 中止呼叫、 对用户放音、 呼叫改向等）。 业务控制结果通过 HLR转 发给所述 MSC。 所述 MSC收到业务控制结果后， 根据所述业务控制结果进 行后续相应的处理。
当拜访网络不支持智能时的被叫流程如图 2所示， 包括：
主叫网络的 MSC收到对被叫用户的呼叫请求。 向被叫用户的 HLR发送 LOCREQ ( Location Request; 位置请求）信令， 请求查询被叫用户的位置。
被叫用户的 HLR根据收到的位置请求信令（收到的 LOCREQ信令中没 有标识 MSC智能处理能力的参数或含有明确指示此 MSC没有智能处理能力 的参数 )判断出被叫用户是智能用户但是发送消息的 MSC没有智能处理能力， 则代替所述 MSC向所述 SCP发送 SERVREQ ( Service Request; 业务请求） 信令要求进行业务控制。
所述 SCP收到后根据用户的签约情况进行业务控制， 并且返回相应的控 制结果（中止呼叫、 继续呼叫、 呼叫改向等）给所述 HLR。 所述 HLR根据 SCP返回的控制结果, 给 MSC返回相应的响应。 MSC收到响应后， 根据响 应中的控制结果， 进行后续的操作。
与本发明有关的现有技术提供了一种将电路域的呼叫路由到分组域的方 法， 所述方法是根据 3GPP2标准提出的， 其要求网络具有智能网处理能力。 其实施过程如图 3所示， 包括如下步驟：
用户在电路域网絡发起始呼。 MSC/VLR ( Visitor Location Register; 访问 位置寄存器）通过智能签约触发方式，将呼叫控制信令 ORREQ触发至智能控 制实体 WIN SCP。所述 WIN SCP将 ORREQ消息转发至分组域网络的控制实 体 VCC AS ( Application Server; 应用服务器）。 所述 VCC AS ¾录用户的原始被叫号码， 然后修改被叫号码为 IMS ( IP Multimedia /Subsystem; IP 多媒体子系统）域接入号码， 并将其返回给 WIN
Figure imgf000005_0001
所述' MSC根据收到的 IMS域接入号码将呼叫路由至 IMS域的入口 MGCF ( Media Gateway/Control Function; 媒体网关控制实体）。
所迷 MGC^构造目的地址为 IMS域路由号码的 SIP ( Session Initiation Protocol; 会诗发起协议）会话并且通过 I-CSCF ( Call Continuity Control Function;„呼叫连续性控制实体）将 SIP呼叫触发至 VCC AS。
VCC AS收到会话之后， 以 ϋ的地址为自己之前保存下的原始被叫号码， 在 IMS域发起新的会话。
经过上述步骤后， 电路域呼叫就被路由到了 IMS域并且被叫号码得以恢 通过现有技术可以看出， MSC是通过智能触发的方式将用户在电路域发起 的呼叫触发到 VCC AS的， 这要求所述 MSC必须具备智能网的处理能力， 从而导 致网络设备的升级和维护成本会相对升高。 发明内容
本发明提供一种将电路域呼叫路由至分组域实体的方法、 系统和应用服 务器， 通过本发明， 给出了无论在 MSC支持智能处理能力， 还是不支持智能 处理能力时， 将电路域的呼叫路由到分组域的主叫流程和被叫流程的解决方 案。
本发明是通过如下的技术方案实现的：
本发明提供一种将电路域呼叫路由至分组域的方法， 其包括：
分组域中的应用服务器 VCC AS通过与电路域的归属位置寄存器 HLR交 互获取原被叫号码， 并为电路域的呼叫分配分组域路由号码；
当以分组域路由号码为被叫标识的分组域呼叫到达所述分组域中的 VCC AS后 , 所述分组域中的 VCC AS根据所获取的原被叫号码发起对应的分組域 呼叫。
本发明还提供一种将电路域呼叫路由至分组域的系统， 其包括： 所述分组域的应用服务器 VCC AS,用于通过与电路域的归属位置寄存器 HLR交互获取原被叫号码， 并为电路域的呼叫分配对应的分组域路由号码； 以及， 当以分组域路由号码为被叫标识的分组域呼叫到达所述分组域中的 VCC AS后， 用于根据所获取的原被叫号码发起对应的分组域呼叫；
所述电路域的 HLR, 用于将电路域的呼叫对应的原被叫号码发送给所述 分组域的 VCC AS; 以及，将所述分组域中的 VCC AS分配的分組域路由号码 发送给电路域网络。
本发明实施例还提供一种将电路域呼叫路由至分组域的应用服务器 VCC AS, 包括：
呼叫控制单元， 用于接收电路域的归属位置寄存器 HLR的传送的信息， 并从中获取原被叫号码， 并为电路域呼叫分配对应的分组域路由号码； 以及， 当以分组域路由号码为被叫标识的分组域呼叫到达后， 根据所获取的原被叫 号码发起对应的分组域呼叫；
所述传输单元， 用于将所述呼叫控制单元发起的分组域呼叫传送出去。 由上述本发明提供的技术方案可以看出， 本发明中由于分组域中的 VCC AS通过与电路域的 HLR交互获取原被叫号码， 并为电路域的呼叫分配分组 域路由号码， 因此， 当电路域的呼叫根据所述分组域路由号码到达所述分组 域中的 VCC AS后， 所述 VCC AS能够根据其所获取的原被叫号码发起新的 SIP会话。 由于 VCC AS是通过与 HLR的交互获取呼叫信息的， 而不是通过 与 SCP交互获取的。所以 MSC只需要与 HLR通信即可，而不需与 SCP通信， 因此本发明不需要 MSC必须具有智能处理能力。 附图说明
图 1为背景技术提供的当拜访网络不支持智能时的主叫流程图； 图 2为背景技术提供的当拜访网络不支持智能时的被叫流程图； 图 3为背景技术提供的当网络具有智能网处理能力时， 将电路域的呼叫 路由到分组域的流程图；
图 4为本发明第一实施例的流程图；
图 5为本发明第二实施例的流程图；
图 6为本发明第三实施例的结构框图；
图 7为本发明第五实施例的结构框图。 具体实施方式
本发明实施例通过分组域，如 IMS域中的一个 VCC AS( Application Server; 应用服务器）接收 HLR发送的电路域呼叫控制信令， 保存呼叫对应的原被叫 号码， 并返回分组域路由号码， 如 IMS域路由号码， 让呼叫从电路域路由到分 组域， 如 IMS域实体中； 并在分组域， 如 IMS域中接收到呼叫信令后再根据之 前保存的原被叫号码发起新的分组域的呼叫， 如 SIP会话。
本发明第一实施例提供了一种将电路域的呼叫路由到分组域中的主叫流 程， 其在 CDMA2000网络中， 当主叫用户在电路域发起呼叫后， 分組域中的 VCC AS通过与电路域的 HLR交互获取原被叫号码 , 并为本次呼叫分配对应 的分组域路由号码， 并将所述分组域路由号码通过所述电路域的 HLR返回给 电路域的 MSC; 当所述 MSC根据所述分组域路由号码将电路域的呼叫路由 到分组域网络后， 所述分组域中的 VCC AS根据所获取的原被叫号码发起新 的分组域的呼叫， 如 SIP会话。 其具体实施过程如图 4所示， 包括如下步骤： 步骤 501， 主叫用户在电路域发起呼叫， 被叫号码为另夕 i、一个终端 MS2的 号码。
步骤 502,正在为用户提供服务的: MSC (所述 MSC可以不具备智能处理能 力， 也可以具备智能处理能力。）判断到用户签约有始呼触发业务后， 触发始 呼请求 ORREQ的控制信令到主叫用户归属的 HLR。
步骤 503， HLR收到始呼请求的控制信令后， 判断到用户签约有特别的业 务， 则通过呼叫控制信令将原被叫号码等呼叫相关信息发送到用户签约的分 组域，如 IMS域应用服务器 VCC AS中，并向 VCC AS申请分配分组域路由号码， 如 IMS域路由号码。
所述呼叫控制信令可以是 HLR转发的始呼请求 OR EQ的 MAP (移动应用 协议）信令， 也可以其他类型的信令， 例如 Diameter信令， CAP ( CAMEL Application Part; CAMEL用户部分， 其中 CAMEL是 Customised Application for Mobile network Enhanced Logic移动网络增强定制服务逻辑的简称）信令等， 总之只要 HLR能够将原用户号码等呼叫信息带给 VCC AS, 并且向 VCC AS申 请分配分组域路由号码 , 如 IMS域路由号码即可。
步驟 504, VCC AS收到所述呼叫控制信令， 如始呼请求信令后， 保存所 述呼叫控制信令中的原被叫号码， 以及所述呼叫控制信令相关信息， 如主叫 用户号码或路由信息等。
步骤 505, VCC AS向 HLR返回响应消息， 并在响应消息中携带分组域路 由号码， 如 IMS域路由号码， 指示呼叫改向。
步驟 506， HLR将所述 VCC AS发送给的响应消息转发给 MSC。
步骤 507,所述 MSC根据接收到的响应消息获取到分组域路由号码，如 IMS 域路由号码，并根据所述分组域路由号码，如 IMS域路由号码将主叫用户的呼 叫路由到分组域， 如 IMS域的入口网元 MGCF。
步骤 508, MGCF使用所述分组域路由号码， 如 IMS域路由号码作为目的 地址， 在分组域， 如 IMS域中发起新的分组域呼叫， 如 SIP会话； 然后通过分 组域呼叫信令将所述分组域呼叫发送给分组域的 VCC AS;
也可以经 I/S-CSCF网元将所述新的分组域呼叫信令转发到分组域的 VCC AS上。
步骤 509， 所述 VCC AS收到所述分组域的呼叫信令后， 根据所述分组域 的呼叫信令关联到保存的原被叫号码信息， 并使用原先保存的原被叫号码作 为目的地址， 在分組域， 如 IMS域发起新的分组域的呼叫， 如 SIP会话。
所述 VCC AS可以根据分组域的呼叫信令中携带的主叫用户号码关联到 所保存的原被叫号码信息； 也可以根据所述呼叫控制信令相关信息， 如主叫 用户号码或路由信息等关联到所保存的原被叫号码信息。
本发明第二实施例提供了第二种将电路域的呼叫路由到分组域中的被叫 流程， 其在 CDMA2000网絡中， 当电路域的呼叫到达 MSC后， 所述 MSC向被 叫用户归属的电路域的 HLR请求被叫用户的位置； 电路域的 HLR将原被叫号 码发送给分组域中的 VCC AS, 所述 VCC AS根据所述原被叫号码返回对应的 分組域路由号码； 当所述 MSC根据所述分组域路由号码将电路域的呼叫路由 到分组域网络后， 所述分組域中的 VCC AS根据所获取的原被叫号码发起新的 分组域呼叫， 如 SIP会话。 其具体实施过程如图 5所示， 包括如下步骤：
步骤 601 , 电路域的呼叫到达 MSC, 被叫号码为被叫用户 MS2的号码。 所 述 MSC有可能是主叫网络的服务 MSC, 也有可能是被叫网络的 MS (：。 所述 MSC可以不具备智能处理能力， 也可以具备智能处理能力。
步骤 602 , 所述 MSC向被叫用户归属的 HLR发送位置请求 （ Location Request, LOCREQ ) 的呼叫控制信令， 请求查询被叫用户的路由。
步骤 603, HLR收到所述位置请求的呼叫控制信令后， 判断到被叫用户签 约有特别的控制业务，则将向用户签约的分组域，如 IMS域应用服务器 VCC AS 发送业务请求（ Service Request, SERVREQ )的呼叫控制信令进行业务控制。 HLR也可以通过其它 MAP信令， 如直接转发 LOCREQ给 VCC AS, 或者， 发送 路由请求（Routing Request, ROUTREQ ) 消息给 VCC AS, 或者使用其它类 型的信令比如 CAP信令、 Diameter信令等， 将原呼叫信息带给 VCC AS, 并且 向所述 VCC AS申请分组域路由号码， 如 IMS域路由号码。
步骤 604, 所述 VCC AS收到所述 HLR发送的呼叫控制信令后， 保存所述 呼叫控制信令中的原被叫号码， 以及与所述呼叫控制信令相关的信息， 如主 叫用户号码或路由号码等，并为所述呼叫分配对应的分组域路由号码，如 IMS 域路由号码。
步骤 605, 所述 VCCAS向所述 HLR返回响应消息， 并通过所述响应消息 携带所述分组域路由号码， 如 IMS域路由号码。
步骤 606 , HLR将响应消息转发给 MSC。 步骤 607, MSC收到所述响应消息后，获取其中的分组域路由号码，如 IMS 域路由号码， 并根据所述分组域路由号码， 如 IMS域路由号码将呼叫， 如初始 地址消息路由到分组域， 如 IMS域的入口网元 MGCF。
步骤 608， MGCF使用分組域路由号码， 如 IMS域路由号码作为目的地址， 在分组域， 如 IMS域中发起新的分组域呼叫， 如 SIP会话;. 然后通过分组域呼 叫信令将所述分组域呼叫发送给分组域的 VCC AS。
也可以经 I/S-CSCF网元将所述新的分組域呼叫信令转发到分组域的 VCC AS上。
步骤 609， 所述 VCC AS收到所述分组域的呼叫信令后， 根据所述分组域 的呼叫信令关联到保存的原被叫号码信息， 并使用原先保存的原被叫号码作 为目的地址， 在分组域， 如 IMS域发起新的分组域的呼叫， 如 SIP会话。
所述 VCC AS可以根据分组域的呼叫信令中携带的主叫用户号码关联到 所保存的原被叫号码信息； 也可以根据所述呼叫信令相关信息， 如主叫用户 号码或路由信息等关联到所保存的原被叫号码信息。
本发明第一实施例和第二实施例（参见图 4, 图 5 )给出的都是 VCC AS与 SCP合设的情况下的流程描述， 然而在实际组网中， VCC AS可以与 SCP合设 在一起，也可以是独立的设备。如果 VCC AS作为独立设备与 SCP分设，则 HLR 与 VCC AS之间交互的消息， 如 ORREQ， SERVREQ等， 将通过中间的 SCP来 进行转发（机制如图 3所示）。
本发明第三实施例提供一种将电路域呼叫路由至分组域的系统， 其结构 如图 6所示， 包括： 分组域的 VCC AS、 电路域的 HLR和 MSC; 其中所述 HLR包括信令构造单元和信令传输单元。其中所述 MSC可以不具有智能网络 处理能力， 也可以具备智能网络处理能力。
所述 MSC根据用户的呼叫发送相应的呼叫控制信令到电路域的 HLR中。 所述 HLR收到所述呼叫控制信令后， 通过所述信令构造单元将原被叫号 码封装到 MAP信令、 Diameter信令或 CAP信令中， 并通过所述信令传输单 元将所述信令构造单元所构造的信令发送给分組域的 VCC AS。 所述分组域的 VCC AS接收电路域的 HLR的传送的信息， 并从中获取原 被叫号码， 并为本次呼叫分配对应的分组域路由号码， 并将所述分组域路由 号码返回给 HLR。
所述电路域的 HLR将所述分组域路由号码传送给所述 MSC。
所述 MSC根据所述分组域路由号码将电路域的呼叫路由到分组域网络 中。
当分组域中的 VCC AS接收到所述呼叫后， 根据所述呼叫在所保存的原 被叫号码中去关联所述呼叫对应的原被叫号码， 并根据所关联到的原被叫号 码发起新的分组域呼叫， 如 SIP会话。
本发明第四实施例提供另一种将电路域呼叫路由至分组域的系统， 其结 构较第三实施例缺少了 MSC。 其包括分组域的 VCC AS、 电路域的 HLR。 其 中所述 HLR包括信令构造单元和信令传输单元。
所述 HLR收到电路域的呼叫控制信令后， 通过所述信令构造单元将原被 叫号码封装到 MAP信令、 Diameter信令或 CAP信令中， 并通过所述信令传 输单元将所述信令构造单元所构造的信令发送给分组域的 VCC AS。
所述分组域的 VCC AS接收电路域的 HLR的传送的信息， 并从中获取原 被叫号码， 并为本次呼叫分配对应的分组域路由号码， 并将所述分組域路由 号码返回给 HLR。
所述电路域的 HLR将所述分組域路由号码传送给电路域网络中。
当以分组域路由号码为被叫标识的分组域呼叫到达分組域中的 VCC AS 后， 所述分组域中的 VCC AS根据所述呼叫在所保存的原被叫号码中去关联 所述呼叫对应的原被叫号码， 并根据所关联到的原被叫号码发起新的分組域 呼叫， 如 SIP会话。
本发明笫五实施例提供一种将电路域呼叫路由至分组域的 VCC AS,其结 构如图 7所示， 所述 VCC AS包括呼叫控制单元和传输单元。
所述呼叫控制单元接收电路域的 HLR的传送的信息， 并从中获取原被叫 号码， 并为电路域呼叫分配对应的分组域路由号码； 以及， 当以分組域路由 号码为被叫标识的分组域呼叫到达后， 根据所述分組域呼叫关联到所获取的 原被叫号码， 并以所述原被叫号码为目的地址， 发起对应的新的分组域呼叫。 所述传输单元将所述呼叫控制单元发起的分组域呼叫传送出去。
当根据所述分组域呼叫关联到所获取的原被叫号码时，所述 VCC AS可以 根据分组域的呼叫信令中携带的主叫用户号码关联到所保存的原被叫号码信 息； 也可以根据分组域路由号码等关联到所保存的原被叫号码信息。
以上方法、 系统和装置均以 CDMA2000网络为例进行说明的， 本发明实 施例也可以用于 WCDMA网络。 当应用于 WCDMA时，将呼叫控制信令更换为 WCDMA网络中对应的信令即可，例如，在第二实施例中，将位置请求 Location Request, LOCREQ )的呼叫控制信令更换为在 WCDMA网络中应用的请求路由 信息（ Send— Routing— Info, SRI )的控制信令。
通过上述本发明实施例提供的具体实施方案可以看出， 分组域中的 VCC AS通过与电路域的 HLR交互获取到原被叫号码， 因此， 当电路域的呼叫根 据所述分組域路由号码到达所述分组域中的 VCC AS后， 所述 VCC AS能够 根据其所获取的原被叫号码发起新的 SIP会话。 由于 VCC AS是通过与 HLR 的交互获取呼叫信息的，而不是通过与 SCP交互获取的。所以 MSC只需要与 HLR通信即可， 而不需与 SCP通信， 因此本发明不需要 MSC必须具有智能 处理能力。 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种将电路域呼叫路由至分组域的方法， 其特征在于， 包括： 分组域中的应用服务器 VCC AS通过与电路域的归属位置寄存器 HLR交 互获取原被叫号码， 并为电路域的呼叫分配分组域路由号码；
当以分组域路由号码为被叫标识的分组域呼叫到达所述分组域中的 VCC AS后， 所述分组域中的 VCC AS根据所获取的原被叫号码发起对应的分組域 呼叫。
2、 根据权利要求 1所述的方法， 其特征在于， 所述分组域中的应用服务 器 VCC AS通过与电路域的归属位置寄存器 HLR交互获取原被叫号码， 并为 电路域的呼叫分配分組域路由号码的过程， 包括：
当电路域的呼叫控制信令到达 HLR后， 并且所述 HLR判断所述呼叫对 应的用户有签约业务时， 则将原被叫号码发送给分组域的 VCC AS;
所述分组域的 VCC AS获取所述 HLR发送给的原被叫号码， 并将其保存 下来， 并为本次呼叫分配对应的分组域路由号码。
3、 根据权利要求 2所述的方法， 其特征在于， 将原被叫号码发送给分组 域的 VCCAS的过程， 具体包括：
通过呼叫控制信令将原被叫号码发送给分组域的 VCC AS。
4、 根据权利要求 3所述的方法， 其特征在于， 所述呼叫控制信令包括： 移动应用协议 MAP信令、 Diameter信令或移动网络增强定制服务逻辑 用户部分 CAP信令。
5、 根据权利要求 2所述的方法， 其特征在于， 所述分组域中的应用服务 器 VCCAS通过与电路域的归属位置寄存器 HLR交互获取原被叫号码， 并为 电路域的呼叫分配分組域路由号码的过程， 还包括： 交换中心 MSC;
所述 MSC根据所述分组域路由号码将所述电路域呼叫路由到分组域的媒 体网关控制实体 MGCF网元；
所述分组域的 MGCF网元使用所述分组域路由号码作为目的地址， 并根 据所述电路域的呼叫在分组域中发起分组域呼叫 , 并将所述分组域呼叫发送 给所述分组域的 VCCAS实体。
6、 根据权利要求 5所述的方法， 其特征在于：
所迷分组域呼叫中携带着主叫号码， 和 /或， 分组域路由号码。
7、 根据权利要求 1至 6任意一项所述的方法， 其特征在于， 所述当以分 组域路由号码为被叫标识的分组域呼叫到达所述分組域中的 VCC AS后， 所 述分组域中的 VCC AS根据所获取的原被叫号码发起对应的分组域呼叫， 的 过程， 包括：
当以分组域路由号码为被叫标识的分组域呼叫到达所述分组域中的 VCC AS后， 所述分组域的 VCC AS根据所述分组域的呼叫关联到原被叫号码， 并 使用所述原被叫号码作为目的地址， 在分组域发起新的分组域呼叫。
8、 根据权利要求 7所述的方法， 其特征在于， 所述分组域的 VCC AS根 据所述分组域的呼叫关联到原被叫号码的过程， 具体包括：
所述分组域的 VCC AS根据以分组域路由号码为被叫标识的分组域呼叫 中携带的主叫号码关联到所述原被叫号码；
或，
所述分组域的 VCC AS根据以分组域路由号码为被叫标识的分组域呼叫 中携带的分组域路由号码关联到所述原被叫号码。
9、 根据权利要求 5所述的方法， 其特征在于， 在主叫流程中， 还包括： 主叫用户在电路域发起呼叫；
正在为所述用户提供服务的 MSC获知到所述发起呼叫的用户有签约业务 后， 发送始呼请求的 MAP信令到主叫用户归属的 HLR。
10、 根据权利要求 5所述的方法， 其特征在于， 在被叫流程中， 还包括： MSC收到电路域的呼叫后，向原被叫号码对应的被叫用户归属的 HLR发 送位置请求的 MAP信令， 请求查询所述被叫用户的位置。
11、 一种将电路域呼叫路由至分组域的系统， 其特征在于， 包括： 分组域的应用服务器 VCC AS,用于通过与电路域的归属位置寄存器 HLR 交互获取原被叫号码， 并为电路域的呼叫分配对应的分组域路由号码； 以及， 当以分组域路由号码为被叫标识的分组域呼叫到达所述分组域中的 VCC AS 后， 用于根据所获取的原被叫号码发起对应的分组域呼叫；
所述电路域的 HLR, 用于将电路域的呼叫对应的原被叫号码发送给所述 分组域的 VCC AS; 以及，将所述分组域中的 VCC AS分配的分组域路由号码 发送给电路域网络。
12、 根据权利要求 11所述的系统， 其特征在于， 还包括：
移动业务交换中心 MSC, 用于根据电路域的呼叫， 发送呼叫控制信令给 所述电路域的 HLR; 以及，用于从所述电路域的 HLR中接收分组域中的 VCC AS分配的分组域路由号码， 并根据所述分组域路由号码将电路域的呼叫路由 到分组域网絡中。
13、 根据权利要求 11所述的系统， 其特征在于， 所述 HLR包括： 信令构造单元， 用于将原被叫号码封装到 MAP信令、 Diameter信令或 CAP信令中；
信令传输单元， 用于将所述信令构造单光所构造的信令发送给分组域的 VCC AS。
14、 一种应用服务器， 其特征在于， 包括：
呼叫控制单元， 用于接收电路域的归属位置寄存器 HLR的传送的信息， 并从中获取原被叫号码， 并为电路域呼叫分配对应的分组域路由号码； 以及， 当以分組域路由号码为被叫标识的分组域呼叫到达后， 根据所获取的原被叫 号码发起对应的分组域呼叫；
传输单元， 用于将所述呼叫控制单元发起的分组域呼叫传送出去。
PCT/CN2007/002265 2006-08-01 2007-07-26 Procede, systeme et serveur d'application pour le routage d'appel de domaine circuit vers un domaine paquet WO2008017237A1 (fr)

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