WO2011050733A1 - 一种ims集中业务的通信方法、装置及系统 - Google Patents
一种ims集中业务的通信方法、装置及系统 Download PDFInfo
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- WO2011050733A1 WO2011050733A1 PCT/CN2010/078197 CN2010078197W WO2011050733A1 WO 2011050733 A1 WO2011050733 A1 WO 2011050733A1 CN 2010078197 W CN2010078197 W CN 2010078197W WO 2011050733 A1 WO2011050733 A1 WO 2011050733A1
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- Prior art keywords
- registration request
- request message
- user
- address information
- periodic
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Classifications
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- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/02—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration by periodical registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a communication method, apparatus, and system for IMS centralized services. Background technique
- IMS IP Multimedia Subsystem
- CS Circuit Switched Domain
- IMS IP Multimedia Subsystem
- CS Circuit Switched Domain
- IMS IP Multimedia Subsystem
- ICS IMS centralized services
- mAGCF mobile access gateway control function
- Gateway control functions are typically implemented using the Enhanced Mobile Switching Server (MSC Server Enhanced for ICS).
- the flow of the ICS user described in the 3GPP TS23292 v9.0.0 protocol when switching between networks When the mobile phone user (for the ICS user) roams between the networks, the mobile phone initiates a location update request message to the target mAGCF, and completes the processing of the authentication process in cooperation with the Home Location Register (HLR); The previously recorded source mAGCF information sends a location cancel message to the source mAGCF to cancel the user information; the source mAGCF receives the message and sends a logout request message De-Register to the query type call session control function (Interrogating-Call Session Control Function) I-CSCF) After receiving the De-Register message, the I-CSCF queries the Home Subscriber Server (HSS) to obtain the address of the Serving-Call Session Control Function (S-CSCF) and forwards it.
- HLR Home Location Register
- the deregistration request message is sent to the S-CSCF for cancellation processing (ie, the binding of the source mAGCF is released); the target mAGCF sends a Register after receiving the location update of the mobile handset user.
- the message is sent to the I-CSCF, and the I-CSCF queries the HSS to obtain the address of the S-CSCF, and forwards the registration message to the S-CSCF to complete the registration process.
- the source mAGCF will not be able to log off normally in the S-CSCF.
- the IMS core network side cannot correctly determine the access gateway control function of the ICS user.
- the connection rate that causes it to be called will be greatly reduced. Generally speaking, the failure rate is about 50%.
- the embodiment of the invention provides a communication method for improving the ICS user's call completion rate in the scenario of roaming between ICS mobile subscriber networks.
- the IMS centralized service communication device receives a registration request message carrying the user identifier of the IMS centralized service user and the access side address information of the user;
- the access side address information of the user carried in the registration request message is consistent with the access side address information of the user recorded by the IMS core network, and if not, reject The registration request message.
- a receiving unit configured to receive a registration request message carrying a user identifier of the IMS centralized service user and the access side address information of the user;
- a first determining unit configured to determine whether the registration request message is a periodic registration request message
- a second determining unit configured to determine, by the first determining unit, that the registration request message is received when receiving the periodic registration request message Whether the access side address information of the user carried in the IMS core network is consistent with the access side address information of the user recorded by the IMS core network;
- a rejecting unit configured to determine, by the second determining unit, that the access side address information of the user carried in the registration request message is different from the access side address information of the user recorded by the IMS core network When the time is up, the registration request message is rejected.
- a mobile access gateway control apparatus configured to send a registration request message carrying a user identifier of the IMS centralized service user and the access side address information of the user;
- the IMS centralized service communication device configured to receive the registration request message, determine whether the registration request message is a periodic registration request message, and if it is determined that the periodic registration request message is received, determine the Whether the access side address information of the user is consistent with the access side address information of the user recorded by the IMS core network, and if not, rejecting the registration request message.
- a sending unit configured to send a registration request message carrying a user identifier of the IMS centralized service user and the access side address information of the user, and a registration request attribute indication to the IMS centralized service communication device; and a receiving unit, configured to receive the IMS centralized After determining, according to the registration request attribute indication, the registration request message is a periodic registration request message, the service communication device determines the access side address information of the user and the record recorded by the IMS core network carried in the registration request message. When the access side address information of the user is inconsistent, the response message of the registration request message is rejected.
- the IMS Core can also re-register the source side of the IMS Core even if the source side mAGCF cannot start the IMS Core logout and continue to register periodically.
- the periodic registration request message initiated by the mAGCF is distinguished, and the refresh of the incorrect mAGCF is avoided, thereby ensuring the call completion rate of the ICS roaming user as the called party, and avoiding waste of unnecessary communication resources.
- FIG. 1 is a schematic diagram of a registration process of roaming between ICS users in the prior art
- FIG. 2 is a schematic flowchart of an ICS communication method according to Embodiment 1 of the present invention.
- FIG. 3 is a schematic flowchart of an ICS communication method according to Embodiment 2 of the present invention.
- FIG. 4 is a block diagram showing the composition of a communication device for an IMS centralized service according to an embodiment of the present invention
- FIG. 5 is a structural block diagram of a communication system for an IMS centralized service according to an embodiment of the present invention
- FIG. 6 is a structural block diagram of a mobile access gateway control apparatus according to an embodiment of the present invention. detailed description
- the mAGCF of the user needs to start the registration refresh timer according to the Expires parameter value (or the Expires header field value) negotiated at the initial registration. If the timer duration is less than or equal to 1200. In seconds, the periodic registration request message needs to be sent when half of the timer duration. Otherwise, the periodic registration request message needs to be sent 600 seconds before the timer expires. In the scenario where the ICS user performs the inter-network roaming, if the source mAGCF does not receive the Cancel Location message of the HLR, the source mAGCF will start the registration refresh timer normally, and send a periodic registration request message to the I- before the registration refresh timer expires.
- the CSCF, I-CSCF After receiving the periodic registration message, the CSCF, I-CSCF will complete the registration refresh in the S-CSCF. If the periodic registration occurs after the registration initiated by the target side mAGCF, the S-CSCF will refresh the recorded target side mAGCF to the source side mAGCF. At this time, if another user initiates a call to the ICS user, since the user has roamed to the target side mAGCF, and the S-CSCF records the source side mAGCF before roaming, this will cause the call to the user to fail.
- the ICS communication method includes: Step S201: Receive a registration request message carrying a user identifier of an IMS centralized service user and an access side address information of the user;
- Step S202 determining whether the received registration request message is a periodic registration request message;
- Step S203 If it is determined that the periodic registration request message is received, determining the access side address information of the user in the registration request message and the IMS core network Whether the access side address information of the user saved on the side is consistent;
- Step S204 If it is determined that the access side address information of the user in the registration request message is inconsistent with the access side address information of the access side address information of the user stored on the IMS core network side, the registration request message is rejected.
- the embodiment of the present invention may further perform step S205, that is, execute the registration request message.
- the registration request message may be determined to be an initial registration request message.
- Step S205 the registration request message is executed, and the address of the mAGCF recorded by the IMS Core is refreshed to be the address information carried in the registration request message.
- the address information of the access side in the periodic registration request message is determined in step S203.
- the process may proceed to step S205 to execute the registration request message. It is an S-CSCF. If it is an I-CSCF, the I-CSCF needs to obtain the address information of the mAGCF of the user it saves from the S-CSCF.
- the IMS Core after receiving the registration request message, the IMS Core first distinguishes whether it is an initial registration request message or a periodic registration request message, and if it is a periodic registration request message, further needs to determine the mAGCF that needs to be refreshed in this registration. Whether the address is the same as the address of the saved mAGCF. If the IMS Core can determine that the periodic registration request message is not legally registered, the periodic registration can be rejected.
- the IMS Core can distinguish the periodic registration request message initiated by the source side mAGCF that has not been logged out, even if the source side mAGCF cannot be logged off at the IMS Core and continues to be periodically registered. And avoiding the refresh of the incorrect mAGCF, thereby ensuring the call completion rate of the called ICS roaming user, and avoiding waste of unnecessary communication resources.
- FIG. 3 is a signaling flowchart of an ICS communication method according to Embodiment 2 of the present invention, including:
- Step S301 When the mobile ICS user roams between the networks, the user initiates a location update request message to the target mAGCF through the terminal.
- Step S302 Complete the processing of the authentication process with the cooperation of the HLR, and authenticate the user identity and the authority;
- Step S303 The target mAGCF returns a location update request response message to the user.
- Step S304 The HLR sends a location cancel message Cancel Location request to the source mAGCF to cancel the user information according to the information of the source mAGCF of the history.
- the cause of the failure is that the message cannot be successfully sent to the source side mAGCF. That is, the source side mAGCF cannot receive the Cancel Location message.
- Step S305 The target mAGCF sends a registration request message Register to the I-CSCF, and carries the user identification information, the authentication information, and the target mAGCF address information (Contact header field) of the current registration request message;
- Step S306 The I-CSCF queries the HSS to obtain an address of the S-CSCF.
- Step S307 The I-CSCF forwards the registration message to the S-CSCF.
- Step S308 The S-CSCF downloads related information (contract information, security information, etc.) of the user from the HSS and stores the information in the database of the S-CSCF, and the S-CSCF records the current mAGCF of the user as the target side mAGCF;
- Step S309 The S-CSCF returns a response 200 OK message to the I-CSCF.
- Step S310 The I-CSCF returns a registration request response message to the target mAGCF, indicating that the registration is completed.
- Step S311 Since the source side mAGCF does not receive the Cancel Location message, the source side mAGCF starts the registration refresh timer according to the expiration parameter value negotiated at the initial registration, and sends a periodic registration request message when the timer expires.
- the periodic registration request message carries the user identification information, the authentication information, the source side mAGCF address information (Contact header field) of the current registration request message, and the registration request attribute indication, where the registration request attribute indication is used to indicate the present
- the attribute of the secondary registration request message is a periodic registration request message.
- the embodiment of the present invention needs to extend the registration request message to carry the registration request attribute indication, for example, by using the header field of the extended registration request message to carry the indication information.
- the specific implementation of the embodiment of the present invention is extended by the new P- Periodic-Refresh header field.
- the semantic structure of the P-Resort-Refresh header field is as follows:
- P- Periodic-Refresh "P- Periodic-Refresh" HCOLON [em-param *(COMMA em-param) ]
- the initiating registration of the mAGCF when sending a registration request to the user (which may include before, after, or simultaneously with the sending), determines whether a periodic registration request message or an initial registration request message is currently sent, if After the registration request message is a periodic registration request message, the registration request message carries an attribute indication to indicate that the registration request message is a periodic registration request message, and if the registration request message is determined to be an initial registration request message, The attribute indication may be carried to indicate that the registration request is an initial registration request, or may not carry an attribute indication.
- the default configuration does not carry the attribute indication, that is, the initial registration request; or the initial registration initiated by the initiating registration of the mAGCF
- the request message carries an attribute indication to indicate that the current registration is an initial registration, and if the IMS Core does not carry the attribute indication in the received message, the IMS Core may determine that the registration request message is a periodic registration request message; therefore, the embodiment of the present invention Registration request message attribute indication After the next registration request message attributes, message, or to indicate whether the registration request is a periodic registration request message, IMS Core attribute indicates that the registration request is obtained, according to the registration request attribute indicates whether the current register is determined periodic registration.
- the source side mAGCF may also not carry the registration request attribute indication in the registration request message, but send the attribute of the registration request message sent before sending the registration message or after sending the registration message. Instructing, after obtaining the registration request attribute indication, the IMS Core determines, according to the registration request attribute indication, whether the current registration is a periodic registration.
- Step S312 The I-CSCF queries the HSS to obtain an address of the S-CSCF.
- Step S313 The I-CSCF forwards the periodic registration message to the S-CSCF.
- Step S314 After receiving the periodic registration request message, the S-CSCF determines, according to the registration request attribute indication carried in the request message, that the received registration request message is a periodic registration request message, and then determines that the registration request message is carried. Whether the access side address information of the user is consistent with the access side address information of the user recorded by the IMS core network, specifically, in this embodiment, the S-CSCF further performs the user according to the periodic registration request message. The identifier is obtained by obtaining the mAGCF address information of the corresponding user that has been recorded, and determining whether the address information is consistent with the address information of the mAGCF carried in the periodic registration request message. If not, step S315 is performed. Step S315: The S-CSCF rejects the periodic registration request message, and sends a 403 Forbidden message to the I-CSCF.
- Step S316 The I-CSCF returns a 403 Forbidden message to the source side mAGCF.
- Step S317 The S-CSCF executes the periodic registration request message, and sends a 200 OK message to the I-CSCF.
- Step S318 The I-CSCF returns a 200 OK message to the source side mAGCF.
- the subsequent processing is performed according to the description in the protocol (such as saving the registration duration and the service route Service Route header field information). If the received periodic registration response message is a 403 Forbidden message, the state of the corresponding user may be further determined. If the user status is determined to be in the attached ATTACH state, the initial registration request message needs to be re-initiated to the IMS Core. To ensure that users can successfully register to the network.
- the second embodiment of the present invention performs the corresponding operations after the S-CSCF performs the corresponding initial registration and periodic registration, and the initial registration and the periodic registration determination performed in the embodiment of the present invention, and the judgment of the mAGCF address are both It can be done on other network elements in the IMS Core.
- the IMS Core in the scenario of roaming between ICS user networks, even if the source side mAGCF cannot start the registration of the IMS Core and continue to register periodically, the IMS Core can also initiate the period initiated by the source side mAGCF that has not been logged off.
- the sexual registration request message is distinguished, and the refresh of the incorrect mAGCF is avoided, thereby ensuring the call completion rate of the ICS roaming user as the called party, and avoiding waste of unnecessary communication resources.
- the embodiment of the present invention carries the registration request attribute indication by using the extended registration request message, or carries the registration request message attribute indication by the message before or after the extended registration request message, so that the IMS core network can distinguish the attribute of the registration request message.
- the validity of the periodic registration request message is further checked to avoid incorrect mAGCF refresh.
- the embodiment of the present invention further provides a communication device for the IMS centralized service, that is, the network element of the IMS core network side, which may be an S-CSCF, an I-CSCF or a service server AS. As shown in FIG. 4, the device includes:
- the receiving unit 401 is configured to receive a user identifier of the user carrying the IMS centralized service and the user a registration request message of the access side address information.
- the first determining unit 403 is configured to determine whether the registration request message is a periodic registration request message.
- the second determining unit 405 is configured to determine, by the first determining unit, that the period is received.
- the registration request message is sent, it is determined whether the access side address information of the user carried in the registration request message is consistent with the access side address information of the user recorded by the IMS core network;
- the second determining unit determines that the registration request message is rejected when the access side address information of the user carried in the registration request message is inconsistent with the access side address information of the user recorded by the IMS core network.
- the receiving unit 401 is further configured to obtain a registration request attribute indication, where the registration request attribute indication is used to indicate whether the registration request message is a periodic registration request message; the first determining unit 403 is configured according to The registration request attribute indicates that the received registration request message is a periodic registration request message.
- the apparatus further includes an executing unit 409, configured to: when the first determining unit 403 determines that the received registration message is not a periodic registration request message, or the second determining unit 405 determines that the periodic registration request message is carried
- the registration request message is executed when the access side address information of the user is consistent with the access side address information of the user recorded by the IMS core network.
- the embodiment of the present invention enables the IMS core network to distinguish the attributes of the registration request message, and further checks the validity of the periodic registration request message, thereby avoiding the incorrect mAGCF refresh and ensuring the call completion rate.
- the embodiment of the present invention further provides a communication system for IMS centralized services. As shown in FIG. 5, the system includes:
- the mobile access gateway control device 501 is configured to send a registration request message carrying the user identifier of the IMS centralized service user and the access side address information of the user;
- the IMS centralized service communication device 503 is configured to receive the registration request message, determine whether the registration request message is a periodic registration request message, and if it is determined that the periodic registration request message is received, determine the location carried in the registration request message. Whether the access side address information of the user is consistent with the access side address information of the user recorded by the IMS core network, and if not, rejecting the registration request message.
- the mobile access gateway control apparatus 501 is further configured to send a registration request attribute indication, where
- the registration request attribute indication is used to indicate whether the registration request message is a periodic registration request message, and the IMS centralized service communication device 503 determines, according to the registration request attribute indication, whether the received registration request message is periodic.
- the registration request message may be carried by the mobile access gateway control device 501 in the registration request message, for example, by extending a header field or a parameter of the registration request message.
- the mobile access gateway control apparatus 501 further determines whether the status of the user is an attached status when receiving the reject response message to the registration request message, and if yes, re-initiating the initial registration request. Message.
- the mobile access gateway control device is usually implemented by using an enhanced mobile switching server or a mobile access gateway control function, the MG core network side, which may be an S-CSCF, an I-CSCF or a service server AS. .
- the embodiment of the present invention enables the IMS core network to distinguish the attributes of the registration request message, and further checks the validity of the periodic registration request message, thereby avoiding the incorrect mAGCF refresh and ensuring the call completion rate.
- the embodiment of the present invention further provides a mobile access gateway control apparatus.
- the method includes: a sending unit 601, configured to send a user identifier carrying a IMS centralized service user and a registration of the access side address information of the user.
- the request message and the registration request attribute are instructed to the IMS centralized service communication device;
- the receiving unit 603 is configured to receive, after the IMS centralized service communication device determines, that the registration request message is a periodic registration request message according to the registration request attribute indication, And determining, when the access side address information of the user carried in the registration request message is inconsistent with the access side address information of the user recorded by the IMS core network, sending a response message rejecting the registration request message.
- the device further includes: an initiating unit 605, configured to: when the receiving unit 603 receives the reject response message to the registration request message, determine whether the status of the user is an attached state, and if yes, re-initiate the initial registration request message .
- the IMS core network can distinguish the attributes of the registration request message by sending the registration request message attribute indication, and further verify the validity of the periodic registration request message, thereby avoiding the incorrect mAGCF refresh and ensuring the call completion rate.
- the above is a communication method, device and system for an IMS centralized service provided by the present invention.
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Description
一种 IMS集中业务的通信方法、 装置及系统
本申请要求于 2009 年 10 月 29 日提交中国专利局、 申请号为 200910110434. 6、 发明名称为 "一种 IMS集中业务的通信方法、 装置和系统" 的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种 IMS集中业务的通信方法、装置 及系统。 背景技术
随着 IP多媒体子系统（IP Multimedia Subsystem, IMS ) 的不断演进和发 展， 电路交换（Circuit Switched domain, CS ) 网络与 IMS网络将长期并存， 为了实现各种接入方式间无缝高效互通， 使得业务得到 IMS网络的一致控制， 实现 IMS集中业务（ IMS centralized services , ICS )， 需要引入移动接入网关控 制功能 ( Mobile Access Gateway Control Function, mAGCF )将 CS传统用户接 入到 IMS网络，移动接入网关控制功能通常采用增强的移动交换服务器（MSC Server Enhanced for ICS ) 实现。
如图 1所示，为 3GPP TS23292 v9.0.0协议描述的 ICS用户在网间切换时 的流程。当移动手机用户（为 ICS用户）在网间进行漫游时，手机向目标 mAGCF 发起位置更新请求消息， 同时在归属位置寄存器 （Home Location Register, HLR )的配合下完成鉴权流程的处理； HLR根据之前记录的源 mAGCF的信息 向源 mAGCF 发送位置取消消息 Cancel Location请求注销该用户信息； 源 mAGCF收到该消息后发送注销请求消息 De-Register给询问类型呼叫会话控制 功能 ( Interrogating-Call Session Control Function , I-CSCF ) ； I-CSCF 收到 De-Register消息后查询归属用户服务器（ Home Subscriber Server, HSS )获取 服务呼叫会话控制功能（ Serving-Call Session Control Function, S-CSCF )的地 址， 并转发该注销请求消息给 S-CSCF进行注销的处理（即解除源 mAGCF与 其的绑定）； 目标 mAGCF在收到移动手机用户的位置更新后， 发送 Register
消息给 I-CSCF, 由 I-CSCF查询 HSS获取 S-CSCF的地址， 并转发该注册消息 给该 S-CSCF完成注册的处理。
发明人在实现本发明的过程中发现， 如果源 mAGCF 没有收到 HLR 的
Cancel Location消息， 源 mAGCF在 S-CSCF将不能正常进行注销， 在此种情 况下， 若该 ICS用户 #丈被叫， 由于 IMS核心网侧不能正确确定该 ICS用户所 在的接入网关控制功能， 导致其做被叫的接通率将大大降低， 一般来说失败率 为 50 %左右。
发明内容
本发明实施例提供一种在 ICS移动用户网间漫游的场景下，提高 ICS用户 做被叫接通率的通信方法。
本发明实施例的一种 IMS集中业务的通信方法， 包括：
IMS集中业务通信装置接收携带 IMS集中业务用户的用户标识和所述用 户的接入侧地址信息的注册请求消息；
确定所述注册请求消息是否为周期性注册请求消息；
若确定接收到周期性注册请求消息， 判断所述注册请求消息中携带的所述 用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧地址信息是否 一致， 如果否， 拒绝所述注册请求消息。
本发明实施例的一种 IMS集中业务的通信装置， 包括：
接收单元，用于接收携带 IMS集中业务用户的用户标识和所述用户的接入 侧地址信息的注册请求消息；
第一确定单元， 用于确定所述注册请求消息是否为周期性注册请求消息； 第二确定单元， 用于所述第一确定单元确定接收到周期性注册请求消息 时，判断所述注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网 记录的所述用户的接入侧地址信息是否一致；
拒绝单元， 用于在所述第二确定单元确定所述注册请求消息中携带的所述 用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧地址信息不一
致时， 拒绝所述注册请求消息。
本发明实施例的一种 IMS集中业务的通信系统， 包括：
移动接入网关控制装置，用于发送携带 IMS集中业务用户的用户标识和所 述用户的接入侧地址信息的注册请求消息；
IMS集中业务通信装置， 用于接收所述注册请求消息， 确定所述注册请求 消息是否为周期性注册请求消息， 若确定接收到周期性注册请求消息， 判断所 述注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网记录的所 述用户的接入侧地址信息是否一致， 如果否， 拒绝所述注册请求消息。
本发明实施例的一种移动接入网关控制装置， 包括：
发送单元，用于发送携带 IMS集中业务用户的用户标识和所述用户的接入 侧地址信息的注册请求消息以及注册请求属性指示到 IMS集中业务通信装置； 接收单元，用于接收所述 IMS集中业务通信装置在根据所述注册请求属性 指示确定所述注册请求消息为周期性注册请求消息后， 判断所述注册请求消息 中携带的所述用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧 地址信息不一致时， 发送的拒绝所述注册请求消息的响应消息。 可以看出， 通过本发明实施例， 在 ICS用户网间漫游的场景下， 即使源侧 mAGCF不能正常启动在 IMS Core的注销而持续进行周期性注册， IMS Core也 可以将其未注销的源侧 mAGCF发起的周期性注册请求消息区分出来， 并避免 不正确 mAGCF的刷新， 从而保证了 ICS漫游用户作被叫的呼叫接通率， 避免了 不必要的通信资源的浪费。 附图说明
图 1为现有技术 ICS用户网间漫游时注册流程示意图；
图 2为本发明实施例一的 ICS通信方法流程示意图；
图 3为本发明实施例二的 ICS通信方法流程示意图；
图 4为本发明实施例 IMS集中业务的通信装置的组成框图；
图 5为本发明实施例 IMS集中业务的通信系统的组成框图；
图 6为本发明实施例移动接入网关控制装置的组成框图。 具体实施方式
为了使本发明实施例的上述特征、 优点更加明显易懂， 下面结合具体实施 方式对本发明实施例进行详细说明。
ICS用户在 IMS Core的初始注册成功后，用户所在的 mAGCF需要按照在 初始注册时协商出来的期限 Expires参数值 (或者 Expires头域值 )启动注册刷 新定时器， 如果该定时器时长小于或等于 1200秒时， 需要在该定时器时长的 一半时发送周期性注册请求消息， 否则， 需要在该定时器超时前 600秒时发送 周期性注册请求消息。 在 ICS用户进行网间漫游的场景下， 如果源 mAGCF没 有接收到 HLR的 Cancel Location消息， 源 mAGCF还是会正常启动注册刷新 定时器，在注册刷新定时器超时前发送周期性注册请求消息给 I-CSCF, I-CSCF 收到该周期性注册消息后会到 S-CSCF中完成注册刷新。 如果该周期性注册发 生在目标侧 mAGCF发起的注册之后，那么 S-CSCF会将记录的目标侧 mAGCF 刷新为源侧 mAGCF。 此时若其它用户发起对该 ICS用户的呼叫， 由于用户已 经漫游至目标侧 mAGCF， 而 S-CSCF记录的是漫游前的源侧 mAGCF，这将导 致对该用户的呼叫失败。
为解决上述场景下的问题，如图 2，本发明实施例一的 ICS通信方法包括： 步骤 S201 : 接收携带 IMS集中业务用户的用户标识和所述用户的接入侧 地址信息的注册请求消息；
步骤 S202: 确定接收到的注册请求消息是否为周期性注册请求消息； 步骤 S203:如果确定接收到周期性注册请求消息，则判断该注册请求消息 中的用户的接入侧地址信息与 IMS核心网侧保存的用户的接入侧地址信息是 否一致；
步骤 S204: 如果判断该注册请求消息中的用户的接入侧地址信息与 IMS 核心网侧保存的用户的接入侧地址信息接入侧地址信息不一致， 则拒绝该注册 清求消息。
本发明实施例还可以可执行步骤 S205， 即执行该注册请求消息； 在上述步 骤 S202中， 若判断该注册请求消息不是周期性注册请求消息， 则可确定该注 册请求消息为初次注册请求消息， 即可执行步骤 S205，执行注册请求消息，刷 新 IMS Core记录的 mAGCF的地址为该注册请求消息中携带的地址信息； 另 外， 当步骤 S203中判断周期性注册请求消息中的接入侧的地址信息和 IMS Core记录的接入侧的地址信息一致时， 也可转至步骤 S205执行该注册请求消 息。 是 S-CSCF, 若是 I-CSCF, 则 I-CSCF需要向 S-CSCF获得其保存的用户的 mAGCF的地址信息。 上述实施例， 对于 IMS Core， 当其接收到注册请求消息 后， 首先区分是初始注册请求消息还是周期性注册请求消息， 如果是周期性注 册请求消息还需要进一步判断本次注册需要刷新的 mAGCF的地址是否与已保 存的 mAGCF的地址相同， 如果不同， IMS Core可以确定此次周期性注册请求 消息并非合法注册， 则可以拒绝此次周期性注册。 由此， 在 ICS用户网间漫游 的场景下，即使源侧 mAGCF不能在 IMS Core注销而持续进行周期性注册， IMS Core也可以将未注销的源侧 mAGCF发起的周期性注册请求消息区分出来，并 避免不正确 mAGCF的刷新， 从而保证了 ICS漫游用户作被叫的呼叫接通率， 避免了不必要的通信资源的浪费。
如图 3为本发明实施例二的 ICS通信方法的信令流程图， 包括：
步骤 S301 : 当移动 ICS 用户在网间进行漫游时， 用户通过终端向目标 mAGCF发起位置更新请求消息；
步骤 S302: 在 HLR的配合下完成鉴权流程的处理， 对用户身份和权限进 行鉴权；
步骤 S303： 目标 mAGCF向用户返回位置更新请求响应消息；
步骤 S304: HLR根据历史记录的源 mAGCF的信息向源 mAGCF发送位 置取消消息 Cancel Location请求注销该用户信息； 在本发明实施例中， 因为链
路不通的原因导致该消息不能顺利发送到源侧 mAGCF， 即源侧 mAGCF不能 接收到该 Cancel Location消息；
步骤 S305: 目标 mAGCF发送注册请求消息 Register给 I-CSCF, 携带本 次注册的用户标识信息、 鉴权信息、 本次注册请求消息的目标 mAGCF地址信 息 ( Contact header field );
步骤 S306: 由 I-CSCF查询 HSS获取 S-CSCF的地址；
步骤 S307: I-CSCF转发该注册消息给 S-CSCF;
步骤 S308: S-CSCF从 HSS处下载该用户的相关信息 (签约信息、 安全信 息等)并将这些信息存放在该 S-CSCF 的数据库中， S-CSCF 记录用户目前的 mAGCF为目标侧 mAGCF;
步骤 S309: S-CSCF给 I-CSCF返回应答 200 OK消息；
步骤 S310: I-CSCF向目标 mAGCF返回注册请求响应消息， 表示注册完 成；
步骤 S311 : 由于源侧 mAGCF没有接收到 Cancel Location消息，按照在初 始注册时协商出来的期限 Expires参数值， 源侧 mAGCF启动注册刷新定时器， 在该定时器超时时发送周期性注册请求消息， 该周期性注册请求消息中携带本 次注册的用户标识信息、 鉴权信息、 本次注册请求消息的源侧 mAGCF地址信 息 ( Contact header field ) 以及注册请求属性指示， 该注册请求属性指示用于指 示本次注册请求消息的属性为周期性注册请求消息； 在本步骤中， 本发明实施 例需要扩展注册请求消息来携带该注册请求属性指示， 例如通过扩展的注册请 求消息的头域以携带该指示信息，或者通过扩展的注册请求消息的参数来携带 该指示信息， 本发明实施例的具体实现以扩展新的 P- Periodic-Refresh头域为 例， 该 P- Periodic-Refresh头域的语义结构如下：
P- Periodic-Refresh = "P- Periodic-Refresh" HCOLON [em-param *(COMMA em-param) ]
em-param = "registration" I token
本实施例二， 发起注册的 mAGCF在发送对所述用户的注册请求时（可包 含发送之前、 之后或者发送同时）， 确定当前需要发送的是周期性注册请求消 息还是初始注册请求消息， 若确定本次注册请求消息为周期性注册请求消息 后， 在发送的注册请求消息中携带属性指示， 以表明本次注册请求消息为周期 性注册请求消息， 若确定本次注册请求消息为初始注册请求消息， 可以携带属 性指示表明注册请求为初始注册请求， 也可以并不携带属性指示， 此种情况下 需要默认配置不携带属性指示即为初始注册请求；或者是，发起注册的 mAGCF 在发起的初始注册请求消息中携带属性指示以表明本次注册是初始注册， IMS Core若接收到的消息中未携带属性指示，则可判断此次注册请求消息为周期性 注册请求消息； 因此， 本发明的实施例的注册请求消息属性指示用以表明注册 请求消息的属性，或者用以表明注册请求消息是否是周期性注册请求消息， IMS Core获得注册请求属性指示后，根据所述注册请求属性指示判断当前注册是否 是周期性注册。
在本发明的其它实施例中， 源侧 mAGCF也可以不在注册请求消息中携带 注册请求属性指示， 而在发送该注册消息前， 或者发送该注册消息后， 发送本 次发送的注册请求消息的属性指示， IMS Core获得注册请求属性指示后，根据 所述注册请求属性指示判断当前注册是否是周期性注册。
步骤 S312: 由 I-CSCF查询 HSS获取 S-CSCF的地址；
步骤 S313: I-CSCF转发该周期性注册消息给 S-CSCF;
步骤 S314: S-CSCF接收到该周期性注册请求消息后， 根据请求消息中携 带的注册请求属性指示确定接收到的注册请求消息为周期性注册请求消息， 再 判断所述注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网记 录的所述用户的接入侧地址信息是否一致， 具体地在本实施例中， S-CSCF进 一步根据所述周期性注册请求消息中的用户标识获得已经记录的相应用户的 mAGCF 地址信息， 确定该地址信息与所述周期性注册请求消息中携带的 mAGCF的地址信息是否一致， 若不一致， 执行步骤 S315， 若一致， 执行步骤
步骤 S315: S-CSCF拒绝该周期性注册请求消息， 回送 403 Forbidden消息 给 I-CSCF;
步骤 S316: I-CSCF回送 403 Forbidden消息给源侧 mAGCF;
步骤 S317: S-CSCF执行该周期性注册请求消息， 回送 200 OK消息给 I-CSCF;
步骤 S318: I-CSCF回送 200 OK消息给源侧 mAGCF。
而对于源侧 mAGCF, 在发送周期性注册请求消息后， 如果接收到的周期 性注册响应消息为 200 OK， 则按照协议中的描述进行后续处理（如保存注册 时长、 业务路由 Service Route头域信息等）； 如果收到的周期性注册响应消息 为 403 Forbidden消息时， 则可以进一步判断相应用户的状态， 如果确定该用 户状态为附着 ATTACH态时，则需要重新发起初始注册请求消息给 IMS Core, 以保证用户能够成功注册到网络中。
以上本实施例二以在 S-CSCF进行相应的初始注册和周期性注册的区别后 进行相应的操作， 而本发明实施例中所作的初始注册和周期性注册的判断， 以 及 mAGCF地址的判断都可以在 IMS Core中的其它网元上进行。
本实施例二中， 在 ICS用户网间漫游的场景下， 即使源侧 mAGCF不能正 常启动在 IMS Core的注销而持续进行周期性注册， IMS Core也可以将其未注 销的源侧 mAGCF发起的周期性注册请求消息区分出来，并避免不正确 mAGCF 的刷新， 从而保证了 ICS漫游用户作被叫的呼叫接通率， 避免了不必要的通信 资源的浪费。 同时， 本发明实施例通过扩展的注册请求消息携带注册请求属性 指示，或者通过扩展的注册请求消息之前或之后的消息携带注册请求消息属性 指示，使得 IMS核心网能够区分出注册请求消息的属性，对于周期性注册请求 消息进一步检验其合法性， 从而避免不正确 mAGCF的刷新。
本发明实施例还提供一种 IMS集中业务的通信装置， 即 IMS核心网侧的 网元， 可以是 S-CSCF, I-CSCF或者业务服务器 AS， 如图 4所示， 该装置包 括：
接收单元 401， 用于接收携带 IMS集中业务用户的用户标识和所述用户的
接入侧地址信息的注册请求消息； 第一确定单元 403， 用于确定所述注册请求 消息是否为周期性注册请求消息； 第二确定单元 405， 用于所述第一确定单元 确定接收到周期性注册请求消息时， 判断所述注册请求消息中携带的所述用户 的接入侧地址信息与 IMS核心网记录的所述用户的接入侧地址信息是否一致； 拒绝单元 407， 用于在所述第二确定单元确定所述注册请求消息中携带的所述 用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧地址信息不一 致时， 拒绝所述注册请求消息。
本发明实施例中， 所述接收单元 401进一步用于获得注册请求属性指示， 所述注册请求属性指示用于表明所述注册请求消息是否是周期性注册请求消 息； 所述第一确定单元 403根据所述注册请求属性指示， 确定所述接收到的注 册请求消息是否为周期性注册请求消息。
所述装置还包括执行单元 409， 用于在所述第一确定单元 403确定接收到 的注册消息不是周期性注册请求消息时，或者所述第二确定单元 405确定周期 性注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网记录的所 述用户的接入侧地址信息一致时， 执行所述注册请求消息。
本发明实施例使得 IMS核心网能够区分出注册请求消息的属性，对于周期 性注册请求消息进一步检验其合法性， 从而避免不正确 mAGCF的刷新， 保证 呼叫接通率。
本发明实施例还提供一种 IMS集中业务的通信系统，如图 5所示，该系统 包括：
移动接入网关控制装置 501，用于发送携带 IMS集中业务用户的用户标识 和所述用户的接入侧地址信息的注册请求消息；
IMS集中业务通信装置 503， 用于接收所述注册请求消息， 确定所述注册 请求消息是否为周期性注册请求消息， 若确定接收到周期性注册请求消息， 判 断所述注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网记录 的所述用户的接入侧地址信息是否一致， 如果否， 拒绝所述注册请求消息。
所述移动接入网关控制装置 501进一步用于发送注册请求属性指示， 所述
注册请求属性指示用于表明所述注册请求消息是否是周期性注册请求消息， 则 所述 IMS集中业务通信装置 503根据所述注册请求属性指示，确定所述接收到 的注册请求消息是否为周期性注册请求消息； 所述移动接入网关控制装置 501 可以将所述注册请求属性指示携带在所述注册请求消息中， 例如可以通过扩展 注册请求消息的头域或者参数来实现。
本发明实施例中， 所述移动接入网关控制装置 501进一步在接收到对所述 注册请求消息的拒绝响应消息时， 确定所述用户的状态是否为附着状态， 如果 是， 重新发起初始注册请求消息。
所述的移动接入网关控制装置通常采用增强的移动交换服务器或者移动 接入网关控制功能 mAGCF实现，所述的 IMS核心网侧的网元，可以是 S-CSCF， I-CSCF或者业务服务器 AS。
本发明实施例使得 IMS核心网能够区分出注册请求消息的属性，对于周期 性注册请求消息进一步检验其合法性， 从而避免不正确 mAGCF的刷新， 保证 呼叫接通率。
本发明实施例还提供一种移动接入网关控制装置， 如图 6所示， 包括： 发送单元 601，用于发送携带 IMS集中业务用户的用户标识和所述用户的 接入侧地址信息的注册请求消息以及注册请求属性指示到 IMS集中业务通信 装置； 接收单元 603， 用于接收所述 IMS集中业务通信装置在根据所述注册请 求属性指示确定所述注册请求消息为周期性注册请求消息后， 判断所述注册请 求消息中携带的所述用户的接入侧地址信息与 IMS核心网记录的所述用户的 接入侧地址信息不一致时， 发送的拒绝所述注册请求消息的响应消息。
所述装置还包括： 发起单元 605， 用于在接收单元 603接收到对所述注册 请求消息的拒绝响应消息时， 确定所述用户的状态是否为附着状态， 如果是， 重新发起初始注册请求消息。
本发明实施例通过发送注册请求消息属性指示，使得 IMS核心网能够区分 出注册请求消息的属性， 对于周期性注册请求消息进一步检验其合法性， 从而 避免不正确 mAGCF的刷新， 保证呼叫接通率。
最后， 还需要说明的是， 在本文中， 术语 "包括"、 "包含" 或者其任何其 他变体意在涵盖非排他性的包含， 从而使得包括一系列要素的过程、 方法、 物 品或者设备不仅包括那些要素， 而且还包括没有明确列出的其他要素， 或者是 还包括为这种过程、 方法、 物品或者设备所固有的要素。 在没有更多限制的情 况下， 由语句 "包括一个 ... ... "限定的要素， 并不排除在包括所述要素的过程、 方法、 物品或者设备中还存在另外的相同要素。
通过以上的实施方式的描述， 本领域的技术人员可以清楚地了解到本发明 可借助软件加必需的硬件平台的方式来实现， 当然也可以全部通过硬件来实 施， 但很多情况下前者是更佳的实施方式。 基于这样的理解， 本发明的技术方 案对背景技术做出贡献的全部或者部分可以以软件产品的形式体现出来， 该计 算机软件产品可以存储在存储介质中， 如 ROM/RAM、 磁碟、 光盘等， 包括若 干指令用以使得一台计算机设备（可以是个人计算机， 服务器， 或者网络设备 等 )执行本发明各个实施例或者实施例的某些部分所述的方法。
以上对本发明所提供的一种 IMS集中业务的通信方法、 装置及系统进行了
上实施例的说明只是用于帮助理解本发明的方法及其核心思想； 同时， 对于本 领域的一般技术人员， 依据本发明的思想， 在具体实施方式及应用范围上均会 有改变之处， 综上所述， 本说明书内容不应理解为对本发明的限制。
Claims
1、 一种 IMS集中业务的通信方法， 其特征在于， 包括：
IMS集中业务通信装置接收携带 IMS集中业务用户的用户标识和所述用 户的接入侧地址信息的注册请求消息；
确定所述注册请求消息是否为周期性注册请求消息；
若确定接收到周期性注册请求消息， 判断所述注册请求消息中携带的所述 用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧地址信息是否 一致， 如果否， 拒绝所述注册请求消息。
2、 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括： 获得注册请求属性指示， 所述注册请求属性指示用于表明所述注册请求消 息是否是周期性注册请求消息；
则所述确定所述接收到的注册请求消息是否为周期性注册请求消息包括： 根据所述注册请求属性指示， 确定所述接收到的注册请求消息是否为周期 性注册请求消息。
3、 根据权利要求 2所述的方法， 其特征在于， 所述获得注册请求属性指 示包括：
获得携带在所述注册请求消息中的注册请求属性指示。
4、 根据权利要求 3所述的方法， 其特征在于， 所述注册请求属性指示通 过扩展注册请求消息的头域或者参数携带在所述注册请求消息中。
5、 根据权利要求 3所述的方法， 其特征在于， 所述方法还包括： 移动接入网关控制装置在发送对所述用户的注册请求时，确定当前需要发 送的是周期性注册请求消息还是初始注册请求消息，在发送的注册请求消息中 携带注册请求属性指示。
6、 根据权利要求 1所述的方法， 其特征在于， 所述接入侧地址信息包括 移动接入网关控制功能 （mAGCF ) 的地址信息； 所述判断所述注册请求消息 中携带的所述用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧 地址信息是否一致包括： 根据所述用户标识获得 IMS核心网记录的所述用户的 mAGCF地址信息， 判断所述注册请求消息中携带的 mAGCF的地址信息与所述获得的 IMS核心网 记录的 mAGCF地址信息是否一致。
7、 根据权利要求 1-6任意一项所述的方法， 其特征在于， 所述方法还包 括：
若确定接收到的注册请求消息不是周期性注册请求消息，或者确定周期性 注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网记录的所述 用户的接入侧地址信息一致， 执行所述注册请求消息。
8、 根据权利要求 1-6任意一项所述的方法， 其特征在于， 所述方法还包 括：
移动接入网关控制装置若接收到对所述注册请求消息的拒绝响应消息，确 定所述用户的状态是否为附着状态， 如果是， 重新发起初始注册请求消息。
9、 一种 IMS集中业务的通信装置， 其特征在于， 包括：
接收单元，用于接收携带 IMS集中业务用户的用户标识和所述用户的接入 侧地址信息的注册请求消息；
第一确定单元， 用于确定所述注册请求消息是否为周期性注册请求消息； 第二确定单元， 用于所述第一确定单元确定接收到周期性注册请求消息 时，判断所述注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网 记录的所述用户的接入侧地址信息是否一致；
拒绝单元， 用于在所述第二确定单元确定所述注册请求消息中携带的所述 用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧地址信息不一 致时， 拒绝所述注册请求消息。
10、 根据权利要求 9所述的装置， 其特征在于， 所述接收单元进一步用于 获得注册请求属性指示， 所述注册请求属性指示用于表明所述注册请求消息是 否是周期性注册请求消息；
所述第一确定单元根据所述注册请求属性指示，确定所述接收到的注册请 求消息是否为周期性注册请求消息。
11、 根据权利要求 9所述的装置， 其特征在于， 还包括：
执行单元， 用于在所述第一确定单元确定接收到的注册消息不是周期性注 册请求消息时， 或者所述第二确定单元确定周期性注册请求消息中携带的所述 用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧地址信息一致 时， 执行所述注册请求消息。
12、 一种 IMS集中业务的通信系统， 其特征在于， 包括：
移动接入网关控制装置，用于发送携带 IMS集中业务用户的用户标识和所 述用户的接入侧地址信息的注册请求消息；
IMS集中业务通信装置， 用于接收所述注册请求消息， 确定所述注册请求 消息是否为周期性注册请求消息， 若确定接收到周期性注册请求消息， 判断所 述注册请求消息中携带的所述用户的接入侧地址信息与 IMS核心网记录的所 述用户的接入侧地址信息是否一致， 如果否， 拒绝所述注册请求消息。
13、 根据权利要求 12所述的系统， 其特征在于， 所述移动接入网关控制 装置进一步用于发送注册请求属性指示， 所述注册请求属性指示用于表明所述 注册请求消息是否是周期性注册请求消息；
则所述 IMS集中业务通信装置获得所述注册请求属性指示，根据所述注册 请求属性指示， 确定所述接收到的注册请求消息是否为周期性注册请求消息。
14、 根据权利要求 12所述的系统， 其特征在于， 所述移动接入网关控制 装置进一步用于在接收到对所述注册请求消息的拒绝响应消息时，确定所述用 户的状态是否为附着状态， 如果是， 重新发起初始注册请求消息。
15、 一种移动接入网关控制装置， 其特征在于， 包括：
发送单元，用于发送携带 IMS集中业务用户的用户标识和所述用户的接入 侧地址信息的注册请求消息以及注册请求属性指示到 IMS集中业务通信装置； 接收单元，用于接收所述 IMS集中业务通信装置在根据所述注册请求属性 指示确定所述注册请求消息为周期性注册请求消息后， 判断所述注册请求消息 中携带的所述用户的接入侧地址信息与 IMS核心网记录的所述用户的接入侧 地址信息不一致时， 发送的拒绝所述注册请求消息的响应消息。
16、 根据权利要求 15所述的装置， 其特征在于， 所述装置还包括： 发起单元， 用于在接收单元接收到对所述注册请求消息的拒绝响应消息 时， 确定所述用户的状态是否为附着状态， 如果是， 重新发起初始注册请求消 息。
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| CN102916962B (zh) * | 2012-10-25 | 2016-09-28 | 华为技术有限公司 | 一种ims架构下自交换的触发方法、装置及系统 |
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| KR20200099949A (ko) * | 2019-02-15 | 2020-08-25 | 삼성전자주식회사 | 5G 이동통신 시스템에서 셀룰러 IoT 서비스를 위해 단말을 제어하는 방법 |
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| WO2009057897A1 (en) * | 2007-10-30 | 2009-05-07 | Electronics And Telecommunications Research Institute | Location registering method and system of 3ge user equipment for ims service, and method of handover between networks |
| WO2009063474A1 (en) * | 2007-11-14 | 2009-05-22 | Lucent Technologies Inc | A method and system for the automatic extension of registration period in an ims network |
| CN101699811A (zh) * | 2009-10-29 | 2010-04-28 | 华为技术有限公司 | 一种ims集中业务的通信方法、装置及系统 |
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| EP2080344B1 (en) * | 2006-11-06 | 2010-03-17 | Telefonaktiebolaget LM Ericsson (PUBL) | Methods and apparatuses for registering a terminal in the ims over a circuit-switched access domain |
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| WO2009057897A1 (en) * | 2007-10-30 | 2009-05-07 | Electronics And Telecommunications Research Institute | Location registering method and system of 3ge user equipment for ims service, and method of handover between networks |
| WO2009063474A1 (en) * | 2007-11-14 | 2009-05-22 | Lucent Technologies Inc | A method and system for the automatic extension of registration period in an ims network |
| CN101699811A (zh) * | 2009-10-29 | 2010-04-28 | 华为技术有限公司 | 一种ims集中业务的通信方法、装置及系统 |
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