WO2011153785A1 - 前转呼叫的方法、装置和系统 - Google Patents

前转呼叫的方法、装置和系统 Download PDF

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Publication number
WO2011153785A1
WO2011153785A1 PCT/CN2010/078430 CN2010078430W WO2011153785A1 WO 2011153785 A1 WO2011153785 A1 WO 2011153785A1 CN 2010078430 W CN2010078430 W CN 2010078430W WO 2011153785 A1 WO2011153785 A1 WO 2011153785A1
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WO
WIPO (PCT)
Prior art keywords
network
msc
called user
user
network element
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PCT/CN2010/078430
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English (en)
French (fr)
Inventor
关先锋
龙天泳
孙猛
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中兴通讯股份有限公司
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Publication of WO2011153785A1 publication Critical patent/WO2011153785A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2207/00—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
    • H04M2207/12—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place intelligent networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2207/00—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
    • H04M2207/18—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place wireless networks
    • H04M2207/182—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place wireless networks wireless circuit-switched

Definitions

  • the present invention relates to the field of communications, and in particular to a method, apparatus, and system for forwarding a call.
  • BACKGROUND As shown in FIG. 1 , in a traditional Code Division Multiple Access (CDMA) communication system, an intelligent service complies with a Wireless Intelligent Network (referred to as "WIN"). In the agreement, the user signs various intelligent service triggers in the Home Location Register (HLR). When the user initiates or receives a call, each trigger point in the call connection process is completed according to the trigger of the subscription.
  • the service control point (SCP) triggers the specific service logic control by the SCP and instructs the Mobile Switching Center (MSC) to proceed to the next step.
  • MSC Mobile Switching Center
  • Step S201 The calling user initiates a call
  • Step S202 The MSC where the calling user is located (referred to as the originating MSC) identifies that the called party is mobile.
  • the user requests the called related service information from the HLR to which the called user belongs;
  • Step S203 The HLR belongs to the user's home MSC (or The MSC of the called party sends a route request message;
  • Step S204 The landing MSC returns a route request message, carrying the temporary roaming number TLDN;
  • Step S205 The HLR returns the location information of the called party, and carries the TLDN number assigned by the landing MSC;
  • Step S206 The originating MSC connects the call to the landing MSC according to the TLDN number, and then connects to the called user, and the called user rings;
  • Step S207 The called user does not answer for a long time. After the ringing times out, the landing MSC sends a redirect request message to the originating MSC.
  • Step S208 The originating MSC requests the HLR to redirect the original called user.
  • Step S209 HLR Sending a response message carrying the redirected number to the originating MSC;
  • Step S210 The originating MSC reconnects according to the redirected number. It can be seen from the above process that the user's forward process is recorded by the HLR to change the user's redirected number and control the forwarding.
  • 3 is a schematic diagram of an IP Multimedia Subsystem ("IMS") network and a hybrid network of CDMA networks, where the IMS network includes: AS (Application Server, Application Server), MGCF ( Media Gateway Control Function, Entity, CSCF (Call Session Control Function) entity, HSS (Home Subscriber Server).
  • AS Application Server
  • MGCF Media Gateway Control Function
  • Entity Entity
  • CSCF Call Session Control Function
  • HSS Home Subscriber Server
  • the network elements of the IMS network are used to implement services of users of various CDMA networks (hereinafter referred to as C networks).
  • C networks CDMA networks
  • the monthly service list information of these users is recorded in the IMS domain.
  • These users can simultaneously open multiple services and can implement nesting of multiple services. In this article, such users are referred to as multi-service users.
  • the redirected number of the called user is not stored in the HLR, so that the calling user cannot obtain the redirected number of the called user according to the existing process. Since the called user is on the C network, the call will eventually connect to the C network. If the called user does not open the forwarding service on the HLR, the calling user will play the called user without answering the prompt tone, etc., the calling user.
  • a primary object of the present invention is to provide a method, apparatus, and system for forwarding a call to at least solve the problem that a forward call process in the prior art cannot perform a correct forward call in a hybrid network scenario.
  • a method for forwarding a call including: The first mobile switching center MSC in which the called user is located sends a redirect request to the network element in the second network; the network element sends the redirected number of the called user to the calling party according to the redirect request The second MSC where the user is located; the second MSC receives the forwarded number to forward the call. Further, the sending, by the first MSC, the redirection request to the network element in the second network includes: the first MSC acquiring, by the home location register HLR, forwarding information of the called user; if the obtained forwarding information is used for Instructing the called user to have the indication information of the redirected number, the first MSC sends the redirect request to the network element.
  • the method further includes: when the called user configures the redirected number, the network element saves the redirected number and/or the foregoing And a mapping relationship between the redirected number and the called user, wherein the HLR stores the indication information for indicating that the called user has the redirected number.
  • the foregoing network element according to the redirecting request, sending the redirected number of the called user to the second MSC where the calling user is located, includes: the network element acquiring the locally saved the foregoing according to the redirecting request The redirected number of the user is called; the network element sends the redirected number to the second MSC.
  • an apparatus for forwarding a call includes: a receiving module, configured to receive a redirect request sent by a first mobile switching center MSC where a called user is located in a first network; a module, configured to obtain a redirection number of the called user that is locally saved in the foregoing redirection request, and a sending module, configured to send the redirection number to a second MSC where the calling user is located, so that the second MSC is Forwarding the call according to the received redirected number; wherein the device for forwarding the call is located in a second network different from the first network.
  • a system for forwarding a call includes: a first mobile switching center MSC in which a called user is located in a first network, a network element in a second network, and a calling The second MSC where the user is located, where the first MSC is configured to send a redirect request to the network element in the second network; the network element is configured to send the redirected number of the called user according to the redirect request And the second MSC is configured to send a forward call according to the received redirected number.
  • the network element is a monthly control point SCP
  • the first network is code division multiple access.
  • the second network is an IP Multimedia Subsystem IMS network.
  • the present invention has the following beneficial effects: The present invention records the redirected authority and number of the called user by using the network element device in a different network, and triggers the call to the network that actually performs the service control to control the forward call. Therefore, the correct forward call is performed in the scenario of the hybrid networking.
  • BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
  • FIG. 1 is a schematic diagram of networking of a CDMA2000 network according to the related art
  • FIG. 2 is a schematic diagram of a forward call flow in a CDMA2000 network according to the related art
  • FIG. 3 is a related art according to related art.
  • FIG. 4 is a schematic flowchart of a method for forwarding a call according to an embodiment of the present invention
  • FIG. 5 is a multi-service user setting forwarding service according to an embodiment of the present invention
  • FIG. 6 is a schematic flowchart of a multi-service user performing a forward call according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of an apparatus for forwarding a call according to an embodiment of the present invention
  • FIG. 4 is a flow chart of a method of forwarding a call in accordance with an embodiment of the present invention. As shown in FIG. 4, the method for forwarding a call mainly includes the following steps:
  • the first MSC where the called user is located in the first network sends a redirect request to the network element in the second network.
  • the network element sends the redirected number of the called user according to the redirect request.
  • the calling user can be in the first network, the second network, or other network. That is to say, the called user can be in the same network as the calling user (for example, both in the CDMA2000 network), or can be in different networks (for example, the called user is in the CDMA2000 network and the calling user is in the GSM).
  • Network or, PSTN (Public Switched Telephone Network), or, in an IMS network);
  • the second MSC performs a forward call according to the received redirected number.
  • the redirected authority and the redirected number of the called user are not stored in the HLR, so that in the CDMA2000 network, the called user cannot be obtained according to the process in the prior art. Change the permissions so that you cannot make the correct forward call in the hybrid network scenario.
  • the redirected authority and the redirected number of the called user are recorded by the network element device in different networks of the CDMA2000 and the IMS, and the redirected number is sent to the real service after the call is triggered before the call is triggered. Control and charge control of the IMS network, so that the correct forward call is made in the hybrid network scenario.
  • the sending, by the first MSC, the redirection request to the network element in the second network the first MSC acquiring the forwarding information of the called user from the home location register HLR; if the obtained forwarding information is used for Instructing the called user to have the indication information of the redirected number, the first MSC sends the redirect request to the network element.
  • the HLR can determine whether the called user is configured with the redirecting authority and the redirecting number. Only in the case of configuration, the first MSC sends the redirected direction to the network element in the second network. Requests, which optimize the process and reduce unnecessary operations.
  • the method further includes: when the called user configures the redirected number, the network element saves the redirected number and/or changes In the mapping relationship between the number and the called user, the HLR stores the indication information for indicating that the called user has the redirected number. In the preferred embodiment, the HLR saves the indication information and saves the redirect on the network element in the second network. The number, so that the transmission of the redirected number in the hybrid network can be realized.
  • the network element sends the redirected number of the called user to the second MSC where the calling user is located, where the network element includes: the network element obtains the locally saved called party according to the redirect request.
  • the correct forwarding number of the called user is saved in the scenario of the hybrid network.
  • the network element is an SCP.
  • the SCP is on an AS in the second network.
  • the above device for saving and transmitting the redirected number is an SCP, which is just an example, and may also be other devices in the second network, for example, a Media Gateway Control Function (abbreviated as "Media Gateway Control Function"). MGCF”) entity.
  • MGCF Media Gateway Control Function
  • the embodiment of the present invention can be applied to the scenario of the SCP by the foregoing manner.
  • the first network is a CDMA network
  • the second network is an IMS network.
  • the foregoing first network and second network are only an example of the present invention, and the present invention is not limited thereto.
  • the first network is a code division multiple access WCDMA network
  • the second network is an IMS network.
  • the forward call under CDMA and IMS networking can be implemented in the above manner.
  • the prefix is added to the called number through the IMS network, so that the MSC triggers the SCP to the SCP and then controls the SCP. Instead of performing the guided business process, the direct connection is called.
  • the forwarding service is divided into two parts: Part of the time when the user registers the forwarding information, it needs to be recorded in both the HLR and the SCP, wherein the HLR only needs to care whether the user is activated before or not. Transferring the business, the specific number is irrelevant.
  • the SCP records the forwarding authority and various redirection number information of the user; the other part is the forwarding call flow, in which the redirected number is sent to the MSC through the related information stored in the SCP, so that the MSC passes the redirected number. Make a forward call.
  • the flow corresponding to the above two parts will be described in detail below with reference to the accompanying drawings.
  • Step S501 The mobile user initiates a call, and the MSC identifies the smart user according to the subscription information of the user, and loads a series of intelligent service triggers signed by the calling user ( In this embodiment, only one trigger needs to be signed to the SCP;);
  • Step S502 The call processing is performed to a certain calling side triggering control point, and the MSC sends a trigger message to the SCP that is signed by the calling user according to the loaded trigger list, and the SCP records the forwarding setting information set by the user;
  • Step S503 SCP Replying to the response message;
  • Step S 505 The HLR replies with a response message.
  • 6 is a preferred flow chart of a multi-service user making a forward call according to an embodiment of the present invention.
  • the process for a multi-service user to forward a call includes the following steps: Step 4: S601: A call to a multi-service user occurs; Step S602: According to a multi-service call connection, the call is connected to the IMS.
  • Steps S603 to S605 The IMS network interacts with multiple ASs in sequence to perform control of multiple services according to the subscription information of the user.
  • Step S606 The IMS network reroutes the call back to the MGCF, which is the gateway of the CDMA2000 network.
  • Step S607 The MGCF identifies that the called party is a mobile user, requests the called party related service information from the HLR to which the called user belongs, and the MGCF is responsible for the triggering of the intelligent process of the multi-service user, etc.;
  • Step S608 The HLR belongs to the user The landing MSC sends a routing request message;
  • Step S609 The landing MSC allocates the temporary roaming number TLDN, and returns a routing request message to the HLR, carrying the temporary roaming number TLDN;
  • Step S610 The HLR returns the called location information, and carries the TLDN number assigned by the landing MSC.
  • Step S611 The MSC connects the call to the office where the called user is located according to the TLDN number, and the called party rings;
  • Step S612 Called The user does not answer for a long time. After the ringing times out, according to the list of services obtained by the user from the HLR, it is found that the user has opened the no-answer forward, and then the originating MSC, ie MGCF.
  • Step S613 The MGCF does not request the called number from the HLR at the same time, and no longer requests the called number from the HLR, but fails to reply to the IMS domain, and carries the reason for the connection failure;
  • Step S614 The IMS domain only According to the forwarding authority and redirecting number recorded in the SCP (AS), the forwarding is forwarded, and the call to the original called user is released.
  • the present invention also provides an embodiment of a device for forwarding a call that can use the method of forwarding a call described in the above embodiments. As shown in FIG.
  • the apparatus for forwarding a call includes: a receiving module 702, configured to receive a redirect request sent by a first mobile switching center MSC where a called user is located in a first network;
  • the obtaining module 704 is configured to obtain the redirected number of the called user that is locally saved according to the redirecting request, and the sending module 706 is configured to send the redirected number to the second MSC where the calling user is located, so that the foregoing The second MSC performs a forward call according to the received redirected number; wherein, the device for forwarding the call is located in a second network different from the first network.
  • the redirected number of the called user is recorded by the network element device in the network different from the network where the calling user and the called user are located, and the redirected number is sent to the calling user after the call is triggered before the call is triggered. Therefore, the correct forward call is performed in the scenario of the hybrid networking.
  • the calling user can be in the first network, the second network, or other network. That is, the called user can be in the same network as the calling user (for example, both on the CDMA2000 network), or they can be in different networks (for example, the called user is on the CDMA2000 network and the calling user is in GSM) Network, or, PSTN (Public Switched Telephone Network), or, in an IMS network.
  • the device for forwarding calls is a monthly control point SCP
  • the first network is a code division multiple access CDMA network
  • the second network is an IP multimedia subsystem IMS network.
  • a forward call under CDMA and IMS networking can be implemented.
  • the first MSC acquires forwarding information of the called user from the home location register HLR; and if the obtained forwarding information includes an indication for indicating that the called user has the redirected number The information is sent by the first MSC to the device for forwarding the call.
  • the device for forwarding the call stores the redirected number and/or the mapping relationship between the redirected number and the called user, and the HLR saves the indication that the called user has the The indication information of the above redirected number.
  • the sending module 706 sends the redirected number of the called user to the second MSC where the calling user is located, where the sending module 706 includes: the sending module 706 obtains the locally saved called user by using the redirecting request The redirecting number is sent; the sending module 706 sends the redirected number to the second MSC.
  • the present invention also provides an embodiment of a system for forwarding calls that can use the method of forwarding calls described in the above embodiments.
  • the system for forwarding calls includes: a first MSC 802 in which the called user is located in the first network, a network element 804 in the second network, and a second MSC 806 in which the calling user is located, where
  • the first MSC 802 is configured to send a redirect request to the network element in the second network.
  • the network element 804 is configured to send the redirected number of the called user to the location of the calling user according to the redirect request.
  • the second MSC 806 is configured to perform a forward call according to the received redirected number.
  • the redirected number of the called user is recorded by the network element device in the network different from the network where the calling user and the called user are located, and the redirected number is sent to the calling user after the call is triggered before the call is triggered. Therefore, the correct forward call is performed in the scenario of the hybrid networking.
  • the first MSC 802 acquires forwarding information of the called user from the home location register HLR; if the obtained forwarding information includes an indication for indicating that the called user has the redirected number The first MSC 802 sends the above redirect request to the network element 804.
  • the network element 804 saves the redirection number and/or the redirection number and the called user.
  • the HLR stores the indication information for indicating that the called user has the redirected number.
  • the network element 804 sends the redirected number of the called user to the second MSC 806 where the calling user is located, where the network element 804 includes: the network element 804 obtains the locally saved called user in the redirect request. The above redirected number; the network element 804 sends the redirected number to the second MSC 806.
  • the calling user may be in the first network, the second network, or another network. and also That is to say, the called user can be in the same network as the calling user (for example, both in the CDMA2000 network), or can be in different networks (for example, the called user is in the CDMA2000 network and the calling user is in the GSM network) , or, PSTN (Public Switched Telephone Network), or, in an IMS network.
  • the network element 804 is a service control point SCP
  • the first network is a CDMA network
  • the second network is an IP multimedia subsystem IMS network.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明公开了一种前转呼叫的方法、装置和系统，其中，该前转呼叫的方法包括：第一网络中的被叫用户所在的第一移动交换中心MSC向第二网络中的网元发送改向请求；上述网元根据上述改向请求将上述被叫用户的改向号码发送给主叫用户所在的第二MSC；上述第二MSC根据接收到的上述改向号码进行前转呼叫。本发明解决现有技术中的前转呼叫流程无法在混合组网的场景下进行正取前转呼叫问题，实现了在混合组网的场景下进行正取前转呼叫。

Description

前转呼叫的方法、 装置和系统 技术领域 本发明涉及通信领域， 具体而言， 涉及一种前转呼叫的方法、 装置和系 统。 背景技术 如图 1所示， 在传统的码分多址 （Code Division Multiple Access, 简称 为" CDMA，，）2000通信系统中，智能业务遵守无线智能网（Wireless Intelligent Network, 简称为 "WIN" ) 协议， 用户在归属位置寄存器 （Home Location Register, 简称为 "HLR" ) 中签约各种智能业务触发器， 当用户发起或接收呼 叫时， 呼叫接续过程中的各个触发点根据签约的触发器完成到服务控制点 ( Service Control Point, 简称为 "SCP" ) 的触发， 由 SCP完成具体的业务逻 辑控制， 并指示移动交换中心 （ Mobile Switching Center, 简称为 "MSC" )如 何进行下一步操作。 如图 2所示， 现有的 CDMA2000通信系统中的前转呼叫流程包括如下 步骤： 步骤 S201 : 主叫用户发起呼叫； 步骤 S202： 主叫用户所在的 MSC (称为始呼 MSC )识别被叫是移动用 户， 向被叫用户归属的 HLR请求被叫相关业务信息； 步骤 S203 : HLR向用户归属的落地 MSC (或称为：被叫方所在的 MSC ) 发送路由请求消息； 步骤 S204: 落地 MSC返回路由请求消息， 携带临时漫游号码 TLDN; 步骤 S205: HLR返回被叫的位置信息， 携带落地 MSC分配的 TLDN号 码； 步骤 S206: 始呼 MSC根据该 TLDN号码， 将呼叫接续到落地 MSC, 进 而接续到被叫用户， 被叫用户振铃； 步骤 S207: 被叫用户长时间不接听， 振铃超时之后， 落地 MSC向始呼 MSC发送改向请求消息； 步骤 S208: 始呼 MSC向 HLR请求原被叫用户的改向号码； 步骤 S209: HLR向始呼 MSC发送携带有改向号码的响应消息； 步骤 S210: 始呼 MSC根据上述的改向号码进行重新接续。 从上述过程可以看出， 用户的前转过程是由 HLR处记录用户改向号码， 并控制进行前转的。 图 3示出了 IP多媒体子系统 （ IP Multimedia Subsystem, 简称为 "IMS" ) 网络和 CDMA网络混合组网的示意图，其中， IMS网络包括： AS ( Application Server, 应用月艮务器）， MGCF ( Media Gateway Control Function, 媒体网关 控制功能） 实体、 CSCF ( Call Session Control Function, 呼叫会话控制功能） 实体、 HSS ( Home Subscriber Server, 归属用户服务器）。 在该混合组网的场 景下， 利用 IMS网络的网元实现各种 CDMA网络 （以下简称为 C网） 用户 的业务。 这些用户的月艮务清单信息时记录在 IMS域的， 这些用户可以同时开 通多个业务， 可以实现多种业务的嵌套。 在本文中， 将这类用户称之为多业 务用户。 在这种混合组网的场景下， 被叫用户的改向号码没有保存在 HLR 中， 从而使得主叫用户按照现有的流程无法获取被叫用户的改向号码。 由于被叫 用户在 C网， 呼叫最终会接续到 C网的， 如果被叫用户在 HLR上没有开通 前转业务， 则会对主叫用户播放被叫用户无应答等提示音之后， 主叫用户会 误认为接续已经失败， 提前挂机了。 由上可知， 现有的 CDMA 网络中的前转呼叫流程无法应用在混合组网 的场景下， 即， 无法在混合组网的场景下进行正确的前转呼叫。 发明内容 本发明的主要目的在于提供一种前转呼叫的方法、 装置和系统， 以至少 解决现有技术中的前转呼叫流程无法在混合组网的场景下进行正确的前转呼 叫问题。 才艮据本发明的一个方面， 提供了一种前转呼叫的方法， 其包括： 第一网 络中的被叫用户所在的第一移动交换中心 MSC 向第二网络中的网元发送改 向请求； 上述网元才艮据上述改向请求将上述被叫用户的改向号码发送给主叫 用户所在的第二 MSC; 上述第二 MSC 居接收到的上述改向号码进行前转 呼叫。 进一步地， 上述第一 MSC 向第二网络中的网元发送改向请求包括： 上 述第一 MSC向归属位置寄存器 HLR获取上述被叫用户的前转信息； 若所获 取的前转信息包括用于指示上述被叫用户具有上述改向号码的指示信息， 则 上述第一 MSC向上述网元发送上述改向请求。 进一步地， 在上述第一 MSC 向上述第二网络中的网元发送改向请求之 前， 还包括： 在上述被叫用户配置上述改向号码时， 上述网元保存上述改向 号码和 /或上述改向号码与上述被叫用户的映射关系， 上述 HLR保存上述用 于指示上述被叫用户具有上述改向号码的指示信息。 进一步地， 上述网元 -据上述改向请求将上述被叫用户的改向号码发送 给上述主叫用户所在的第二 MSC 包括： 上述网元才艮据上述改向请求获取本 地保存的上述被叫用户的上述改向号码； 上述网元将上述改向号码发送给上 述第二 MSC。 进一步地， 上述网元为服务控制点 SCP。 进一步地， 上述第一网络为码分多址 CDMA 网络， 上述第二网络为 IP 多媒体子系统 IMS网络。 根据本发明的另一方面， 提供了一种前转呼叫的装置， 其包括： 接收模 块， 用于接收第一网络中的被叫用户所在的第一移动交换中心 MSC发送的 改向请求； 获取模块， 用于 居上述改向请求获取本地保存的上述被叫用户 的改向号码； 发送模块， 用于将上述改向号码发送给主叫用户所在的第二 MSC, 以使上述第二 MSC才艮据接收到的上述改向号码进行前转呼叫； 其中， 上述前转呼叫的装置位于与上述第一网络不同的第二网络中。 进一步地， 上述前转呼叫的装置为服务控制点 SCP, 上述第一网络为码 分多址 CDMA网络， 上述第二网络为 IP多媒体子系统 IMS网络。 根据本发明的又一方面， 提供了一种前转呼叫的系统， 其包括： 第一网 络中的被叫用户所在的第一移动交换中心 MSC、 第二网络中的网元、 主叫用 户所在的第二 MSC, 其中， 上述第一 MSC用于向第二网络中的网元发送改 向请求； 上述网元用于才艮据上述改向请求将上述被叫用户的改向号码发送给 上述主叫用户所在的上述第二 MSC; 上述第二 MSC用于才艮据接收到的上述 改向号码进行前转呼叫。 进一步地， 上述网元为月艮务控制点 SCP , 上述第一网络为码分多址
CDMA网络， 上述第二网络为 IP多媒体子系统 IMS网络。 本发明具有以下有益效果： 本发明通过与在不同的网络中的网元设备记 录被叫用户的改向权限以及号码， 并将呼叫触发到真正进行业务控制的网络 以进行前转呼叫的控制， 从而实现了在混合组网的场景下进行正确的前转呼 叫。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是才艮据相关技术的 CDMA2000网络的组网示意图； 图 2是才艮据相关技术的 CDMA2000网络中的前转呼叫流程的示意图； 图 3是才艮据相关技术的 IMS网络与 CDMA2000网络组网的示意图； 图 4是才艮据本发明实施例的前转呼叫的方法的一种优选的流程图； 图 5是根据本发明实施例的多业务用户设置前转业务时的优选流程图； 图 6是才艮据本发明实施例的多业务用户进行前转呼叫的优选流程图； 图 7是 居本发明实施例的前转呼叫的装置的结构示意图； 图 8是才艮据本发明实施例的前转呼叫的系统的结构示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 图 4是才艮据本发明实施例的前转呼叫的方法的流程图。 如图 4所示， 该 前转呼叫的方法主要包括如下步骤：
S402, 第一网络中的被叫用户所在的第一 MSC 向第二网络中的网元发 送改向请求； S404, 上述网元才艮据上述改向请求将上述被叫用户的改向号码发送给主 叫用户所在的第二 MSC。 优选的， 主叫用户可以处于第一网络、 第二网路， 或其他网络。 也就是说， 被叫用户可以与主叫用户处于相同的网络中（例如， 均处于 CDMA2000网络）， 或者， 也可以处于不同的网络中 （例如， 被叫用 户处于 CDMA2000 网络， 主叫用户处于 GSM 网络， 或者， PSTN ( Public Switched Telephone Network, 公共开关电话网络）， 或者， IMS网络中）；
S406, 上述第二 MSC根据接收到的上述改向号码进行前转呼叫。 在现有技术的混合组网的场景下， 被叫用户的改向权限以及改向号码没 有保存在 HLR中， 从而使得在 CDMA2000的网络中， 按照现有技术中的流 程无法获取被叫用户的改向权限， 这样无法在混合组网的场景下进行正确的 前转呼叫。 反观本发明实施例， 通过在 CDMA2000和 IMS的不同网络中的 网元设备都记录被叫用户的改向权限和改向号码， 并在触发前转呼叫后将该 改向号码发送给真正进行业务控制和计费控制的 IMS网络，从而实现了在混 合组网的场景下进行正确的前转呼叫。 优选的， 上述第一 MSC 向第二网络中的网元发送改向请求包括： 上述 第一 MSC向归属位置寄存器 HLR获取上述被叫用户的前转信息； 若所获取 的前转信息包括用于指示上述被叫用户具有上述改向号码的指示信息， 则上 述第一 MSC 向上述网元发送上述改向请求。 在本优选的实施例中， 通过上 述的 HLR可以判断被叫用户是否配置了改向权限以及改向号码， 只有在配 置的情况下， 第一 MSC 才向第二网络中的网元发送改向请求， 从而优化了 流程， 减少了不必要的操作。 优选的， 在上述第一 MSC向上述第二网络中的网元发送改向请求之前， 还包括： 在上述被叫用户配置上述改向号码时， 上述网元保存上述改向号码 和 /或改向号码与被叫用户的映射关系， 上述 HLR保存上述用于指示上述被 叫用户具有上述改向号码的上述指示信息。 在本优选的实施例中， 通过上述 的方式， 可以实现在 HLR保存指示信息、 在第二网络中的网元上保存改向 号码， 以便可以实现混合组网中的改向号码的传输。 优选的， 上述网元 居上述改向请求将上述被叫用户的改向号码发送给 上述主叫用户所在的第二 MSC 包括： 上述网元才艮据上述改向请求获取本地 保存的上述被叫用户的上述改向号码； 上述网元将上述改向号码发送给上述 第二 MSC。 在本优选的实施例中， 通过上述在网元本地保存被叫用户的改向 号码， 可以实现在混合组网的场景下进行正确的前转呼叫。 优选的， 上述网元为 SCP。 优选的， 该 SCP为与第二网络中的 AS上。 在本发明中， 上述保存和传输改向号码的装置为 SCP, 这只是一种示例， 其 还可以是第二网络中的其他装置， 例如， 媒体网关控制功能（ Media Gateway Control Function, 简称为 "MGCF" ) 实体。 在本优选的实施例中， 通过上述 的方式， 可以使本发明实施例适用于 SCP的场景。 优选的， 上述第一网络为 CDMA网络， 上述第二网络为 IMS网络。 上 述的第一网络和第二网络只是本发明的一种示例，本发明不仅限于此，例如， 第一网络为码分多址 WCDMA网络， 第二网络为 IMS 网络。 在本优选的实 施例中， 通过上述的方式， 可以实现 CDMA与 IMS组网下的前转呼叫。 在上述的各个实施例中，在通过 IMS网络进行被叫用户多种智能业触发 过程中， 通过 IMS网络在被叫号码前增加前缀， 促使 MSC才艮据前缀先触发 到 SCP, 再通过 SCP控制不执行引导业务流程， 而是直接接续被叫。 在本发明的实施例中， 将前转业务分为两个部分： 一部分是用户登记前 转信息的时候， 是需要在 HLR和 SCP都进行记录， 其中 HLR中只需关心用 户是否开通某种前转业务， 具体对应的号码是无关紧要的。 SCP中记录前转 权限以及用户的各种改向号码信息； 另一部分是， 前转呼叫流程， 其中， 通 过 SCP中保存的相关信息将改向号码发送给 MSC, 以使该 MSC通过改向号 码进行前转呼叫。 下面将结合附图详细地描述上述两个部分所对应的流程。 图 5是才艮据本发明实施例的多业务用户设置前转业务时的优选流程图。 如图 5所示， 多业务用户设置前转业务主要包括如下步骤： 步骤 S501 : 移动用户发起呼叫， MSC根据用户的签约信息识别是智能 用户， 装载主叫用户签约的一系列智能业务触发器 （在本实施例中只需要签 约一个触发器到 SCP即可；)； 步骤 S502: 呼叫处理到某一主叫侧触发控制点， MSC才艮据装载的触发 器列表， 向主叫用户签约的 SCP发送触发消息， SCP记录用户设置的前转设 置信息； 步骤 S503 : SCP回复响应消息； 步 4聚 S504: MSC继续触发业务 4爹改请求消息给 HLR, HLR ΐ己录用户的 设置信息。 步骤 S 505： HLR回复响应消息。 图 6是才艮据本发明实施例的多业务用户进行前转呼叫的优选流程图。 如 图 6所示， 多业务用户进行前转呼叫的流程包括如下步骤： 步 4聚 S601 : 发生对多业务用户的呼叫； 步骤 S602: 才艮据多业务呼叫接续的方式， 呼叫被接续到 IMS域； 步骤 S603〜S605 : IMS网络根据用户的签约信息， 依次和多个 AS交互， 进行多个业务的控制； 步骤 S606: IMS网络重新将呼叫路由回 MGCF, 该 MGCF兼故 CDMA 2000网络的关口局； 步骤 S607： MGCF识别被叫是移动用户， 向被叫用户归属的 HLR请求 被叫相关业务信息， MGCF并负责对该多业务用户的智能流程的触发等处理； 步骤 S608： HLR向用户归属的落地 MSC发送路由请求消息； 步骤 S609: 落地 MSC分配临时漫游号码 TLDN, 向 HLR返回路由请求 消息， 携带临时漫游号码 TLDN; 步骤 S610: HLR返回被叫的位置信息， 携带落地 MSC分配的 TLDN号 码； 步骤 S611： MSC根据该 TLDN号码， 将呼叫接续到被叫用户所在的局， 被叫振铃； 步骤 S612: 被叫用户长时间不接听， 振铃超时之后， 根据用户从 HLR 处取得的业务清单，发现该用户开通了无应答前转，则向始呼 MSC,即 MGCF 发送改向请求； 步骤 S613 : MGCF此时艮传统的 CDMA 2000 中的处理不同， 不再向 HLR请求被叫号码， 而是向 IMS域回复失败， 携带接续失败的原因； 步骤 S614: IMS域才艮据 SCP ( AS ) 中记录的前转权限以及改向号码， 进行前转的接续， 并释放对原被叫用户的呼叫。 本发明还提供了一种前转呼叫的装置的实施例， 其可以使用上述实施例 中描述的前转呼叫的方法。 如图 7所示， 才艮据本发明实施例的前转呼叫的装 置包括： 接收模块 702 , 用于接收第一网络中的被叫用户所在的第一移动交 换中心 MSC发送的改向请求； 获取模块 704 , 用于根据上述改向请求获取本 地保存的上述被叫用户的改向号码； 发送模块 706 , 用于将上述改向号码发 送给主叫用户所在的第二 MSC, 以使上述第二 MSC根据接收到的上述改向 号码进行前转呼叫； 其中， 上述前转呼叫的装置位于与上述第一网络不同的 第二网络中。 本发明实施例通过与主叫用户和被叫用户所在的网络不同的网络中的网 元设备记录被叫用户的改向号码， 并在触发前转呼叫后将该改向号码发送给 主叫用户， 从而实现了在混合组网的场景下进行正确的前转呼叫。 优选的， 主叫用户可以处于第一网络、 第二网路， 或其他网络。 也就是 说， 被叫用户可以与主叫用户处于相同的网络中 （例如， 均处于 CDMA2000 网络）， 或者， 也可以处于不同的网络中 （例如， 被叫用户处于 CDMA2000 网络， 主叫用户处于 GSM 网络， 或者， PSTN ( Public Switched Telephone Network, 公共开关电话网络）， 或者， IMS网络中）。 优选的， 上述前转呼叫的装置为月艮务控制点 SCP, 上述第一网络为码分 多址 CDMA网络， 上述第二网络为 IP多媒体子系统 IMS网络。 通过上述的 方式， 可以实现 CDMA与 IMS组网下的前转呼叫。 优选的， 在上述装置实施例中， 上述第一 MSC向归属位置寄存器 HLR 获取被叫用户的前转信息； 若所获取的前转信息包括用于指示上述被叫用户 具有上述改向号码的指示信息， 则第一 MSC 向上述前转呼叫的装置发送上 述改向请求。 优选的， 在上述第一 MSC 向上述前转呼叫的装置发送改向请求之前， 上述被叫用户配置上述改向号码时， 上述前转呼叫的装置保存上述改向号码 和 /或上述改向号码与上述被叫用户的映射关系， 上述 HLR保存上述用于指 示上述被叫用户具有上述改向号码的指示信息。 优选的， 发送模块 706 居上述改向请求将上述被叫用户的改向号码发 送给上述主叫用户所在的第二 MSC 包括： 发送模块 706 居上述改向请求 获取本地保存的上述被叫用户的上述改向号码； 发送模块 706将上述改向号 码发送给上述第二 MSC。 本发明还提供了一种前转呼叫的系统的实施例， 其可以使用上述实施例 中描述的前转呼叫的方法。 如图 8所示， 该前转呼叫的系统包括： 第一网络 中的被叫用户所在的第一 MSC 802、 第二网络中的网元 804、 主叫用户所在 的第二 MSC 806, 其中， 上述第一 MSC 802用于向第二网络中的网元发送 改向请求； 上述网元 804用于才艮据上述改向请求将上述被叫用户的改向号码 发送给上述主叫用户所在的第二 MSC; 上述第二 MSC 806用于才艮据接收到 的上述改向号码进行前转呼叫。 本发明实施例通过与主叫用户和被叫用户所在的网络不同的网络中的网 元设备记录被叫用户的改向号码， 并在触发前转呼叫后将该改向号码发送给 主叫用户， 从而实现了在混合组网的场景下进行正确的前转呼叫。 优选的， 在上述系统实施例中， 第一 MSC 802向归属位置寄存器 HLR 获取被叫用户的前转信息； 若所获取的前转信息包括用于指示上述被叫用户 具有上述改向号码的指示信息，则第一 MSC 802向网元 804发送上述改向请 求。 优选的， 在第一 MSC 802向网元 804发送改向请求之前， 上述被叫用户 配置上述改向号码时， 网元 804保存上述改向号码和 /或上述改向号码与上述 被叫用户的映射关系， 上述 HLR保存上述用于指示上述被叫用户具有上述 改向号码的指示信息。 优选的， 网元 804 居上述改向请求将上述被叫用户的改向号码发送给 上述主叫用户所在的第二 MSC 806包括： 网元 804 居上述改向请求获取本 地保存的上述被叫用户的上述改向号码； 网元 804将上述改向号码发送给第 二 MSC 806。 优选的， 上述主叫用户可以处于第一网络、 第二网路， 或其他网络。 也 就是说， 被叫用户可以与主叫用户处于相同的网络中 （例如， 均处于 CDMA2000 网络）， 或者， 也可以处于不同的网络中 （例如， 被叫用户处于 CDMA2000网络， 主叫用户处于 GSM网络， 或者， PSTN ( Public Switched Telephone Network , 公共开关电话网络）， 或者， IMS网络中）。 优选的， 上述网元 804为服务控制点 SCP, 上述第一网络为 CDMA网 络， 上述第二网络为 IP多媒体子系统 IMS 网络。 通过上述的方式， 可以实 现 CDMA与 IMS组网下的前转呼叫。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 并 且在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤， 或者 将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种前转呼叫的方法， 其特征在于， 包括：
第一网络中的被叫用户所在的第一移动交换中心 MSC 向第二网络 中的网元发送改向请求；
所述网元 -据所述改向请求将所述被叫用户的改向号码发送给主叫 用户所在的第二 MSC;
所述第二 MSC 居接收到的所述改向号码进行前转呼叫。
2. 根据权利要求 1 所述的方法， 其特征在于， 所述第一 MSC向第二网络 中的网元发送改向请求包括：
所述第一 MSC向归属位置寄存器 HLR获取所述被叫用户的前转信 息；
若所获取的前转信息包括用于指示所述被叫用户具有所述改向号码 的指示信息， 则所述第一 MSC向所述网元发送所述改向请求。
3. 根据权利要求 2所述的方法， 其特征在于， 在所述第一 MSC向所述第 二网络中的网元发送改向请求之前， 还包括：
在所述被叫用户配置所述改向号码时， 所述网元保存所述改向号码 和 /或所述改向号码与所述被叫用户的映射关系， 所述 HLR保存所述用 于指示所述被叫用户具有所述改向号码的指示信息。
4. 才艮据权利要求 1所述的方法， 其特征在于， 所述网元才艮据所述改向请求 将所述被叫用户的改向号码发送给所述主叫用户所在的第二 MSC包括： 所述网元才艮据所述改向请求获取本地保存的所述被叫用户的所述改 向号码；
所述网元^所述改向号码发送给所述第二 MSC。
5. 根据权利要求 1至 4中任一项所述的方法， 其特征在于， 所述网元为服 务控制点 SCP。
6. 根据权利要求 1至 4中任一项所述的方法， 其特征在于， 所述第一网络 为码分多址 CDMA网络， 所述第二网络为 IP多媒体子系统 IMS网络。
7. 一种前转呼叫的装置， 其特征在于， 包括：
接收模块， 用于接收第一网络中的被叫用户所在的第一移动交换中 心 MSC发送的改向请求；
获取模块， 用于 -据所述改向请求获取本地保存的所述被叫用户的 改向号码；
发送模块， 用于将所述改向号码发送给主叫用户所在的第二 MSC, 以使所述第二 MSC根据接收到的所述改向号码进行前转呼叫；
其中，所述前转呼叫的装置位于与所述第一网络不同的第二网络中。
8. 根据权利要求 7所述的装置， 其特征在于， 所述前转呼叫的装置为服务 控制点 SCP, 所述第一网络为码分多址 CDMA 网络， 所述第二网络为 IP多媒体子系统 IMS网络。
9. 一种前转呼叫的系统， 其特征在于， 包括： 第一网络中的被叫用户所在 的第一移动交换中心 MSC、 第二网络中的网元、 主叫用户所在的第二 MSC, 其中，
所述第一 MSC , 用于向第二网络中的网元发送改向请求； 所述网元， 用于 居所述改向请求将所述被叫用户的改向号码发送 给所述主叫用户所在的所述第二 MSC;
所述第二 MSC, 用于才艮据接收到的所述改向号码进行前转呼叫。
10. 根据权利要求 9所述的系统，其特征在于，所述网元为服务控制点 SCP, 所述第一网络为码分多址 CDMA网络， 所述第二网络为 IP多媒体子 系统 IMS网络。
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