CN100466655C - 一种请求读取用户注册状态的方法及系统 - Google Patents

一种请求读取用户注册状态的方法及系统 Download PDF

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Publication number
CN100466655C
CN100466655C CNB200510092811XA CN200510092811A CN100466655C CN 100466655 C CN100466655 C CN 100466655C CN B200510092811X A CNB200510092811X A CN B200510092811XA CN 200510092811 A CN200510092811 A CN 200510092811A CN 100466655 C CN100466655 C CN 100466655C
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impu
impi
user
registration state
user registration
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CN1852293A (zh
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王金城
马春燕
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

本发明公开了一种请求用户注册状态的方法，该方法包括以下步骤：预先设置用户数据请求UDR消息中携带的用户标识包括私有用户标识IMPI和公有用户标识IMPU；应用服务器AS向归属注册用户服务器HSS发送携带IMPI和IMPU的UDR消息；HSS根据所述IMPI和IMPU以及预先保存的IMPI和IMPU与用户注册状态对应关系获取与所述IMPI和IMPU对应的用户注册状态，并将所述用户注册状态下发给AS。本发明公开了一种请求用户注册状态的系统。本发明修改了现有协议，使得在IMPU与多个IMPI关联时，HSS能够正确处理请求用户注册状态的UDR消息。

Description

一种请求读取用户注册状态的方法及系统
技术领域
本发明涉及IP多媒体业务子网络(IMS)领域，特别是一种请求读取用户注册状态的方法及系统。
背景技术
在IMS域中，在一条签约数据(IMS Subscription)中含有公有用户标识(IMS Public User Identity，IMPU)、私有用户标识(IMS private UserIdentity，IMPI)和移动台国际综合业务数字网(ISDN)号码(MSISDN)。图1所示的是IMS域用户标识之间的关系，图中的IMS Subscription中存在两个IMPI:IMPI-1和IMPI-2，而IMPI-1与IMPU-1和IMPU-2关联、IMPI-2与IMPU-2和IMPU-3关联，IMPU-1与业务数据(Service Profile)-1关联、IMPU-2和IMPU-3与业务数据-2关联。从图1中可以看出在每个IMSSubscription中存在多个IMPI，同时也存在着一个IMPI与多个IMPU关联以及一个IMPU与多个IMPI关联的情况，即IMPI和IMPU是多对多的关系。
在归属签约用户服务器(HSS)中保存的用户注册状态(IMSUserState)和一对IMPI和IMPU对应，即HSS中保存着IMPI和IMPU与用户注册状态的对应关系。根据第三代合作组织(3GPP)的TS 29328v6.4.0协议，HSS中保存的用户状态包括如下四种:用户注册状态(REGISTERED)、离线业务状态(REGISETERED_WITH_UNREG_SERVICE)、离线未注册状态(NOT_REGISTERED)、正在验证身份状态(AUTHENTICATION_PENDING)。其中，REGISTERED表示该用户已经通过注册；REGISETERED_WITH_UNREG_SERVICE表示该用户没有通过注册，但是享有离线业务；NOT_REGISTERED表示该用户没有注册，并处于离线状态；AUTHENTICATION_PENDING表示该用户已经发起注册，正在被验证身份，但是还没有通过。
AS可以通过AS与HSS之间的接口(Sh接口)发起用户数据请求(UDR)消息请求读取用户注册状态。在现有技术中，当AS向HSS发起UDR消息读取数据时，根据协议规定，在UDR消息中携带的用户标识只有IMPU。UDR消息的格式如下:
<User-Data-Request>::＝<Diameter Header:306，REQ，PXY，16777217>
    <Session-Id>
    {Vendor-Specific-Application-Id}
    {Auth-Session-State}
    {Origin-Host}
    {Origin-Realm}
    [Destination-Host]
    {Destination-Realm}
    *[Supported-Features]
    {User-Identity}
    [Server-Name]
    [Service-Indication]
    {Data-Reference}
    [Identity-Set]
    *[Requested-Domain]
    [Current-Location]
    *[AVP]
    *[Proxy-Info]
    *[Route-Record]
在AS向HSS请求用户状态数据时，UDR消息中的参数Data-Reference的值为IMSUserState，表明该消息请求读取的数据类型是IMS用户注册状态。UDR消息中的User-Identity参数是用于标识用户的用户标识，它的结构如下:
User-Identity::＝<AVP header:70010415>
   [Public-Identity]
   [MSISDN]
   *[AVP]
从User-Identity的结构可以看出，在UDR消息中没有携带IMPI，仅携带了IMPU和MSISDN。
HSS接收到UDR消息后，根据UDR消息中的用户标识以及IMPI和IMPU与用户注册状态的对应关系获取对应的用户注册状态，并把所获取的用户注册状态通过用户数据响应(UDA)消息下发给AS。
但是，由于HSS中保存的用户注册状态和一对IMPI和IMPU对应，而IMPU与IMPI之间是多对多的对应关系，在UDR消息中仅仅携带IMPU，不一定能够准确定位到正确的用户注册状态。当上述对应关系中IMPU只与一个IMPI关联时，HSS下发该IMPI和IMPU对应的用户注册状态；当IMPU与多个IMPI关联时，HSS无法对UDR消息进行正确处理。
发明内容
有鉴于此，本发明提出了一种请求用户注册状态的方法及系统，用以解决当IMPU与多个IMPI关联时HSS无法处理UDR消息的问题。
根据上述目的，本发明提供了一种请求用户注册状态的方法，预先设置UDR消息中携带的用户标识包括IMPI和IMPU，该方法进一步包括以下步骤:
A.应用服务器AS向归属注册用户服务器HSS发送携带IMPI和IMPU的UDR消息；
B.HSS根据所述IMPI和IMPU以及预先保存的IMPI和IMPU与用户注册状态的对应关系获取与所述IMPI和IMPU对应的用户注册状态，并通过UDA消息将所述用户注册状态下发给AS。
本发明还提供了一种请求用户注册状态的系统，该系统包括应用服务器AS和归属注册用户服务器HSS，所述HSS中包括用于保存私有用户标识IMPI和公有用户标识IMPU与用户注册状态对应关系的记录单元，所述AS中包括数据请求单元，所述HSS中进一步包括应答单元，其中，数据请求单元，用于发送携带IMPI和IMPU的用户数据请求UDR消息，以及接收HSS下发的用户数据响应UDA消息；所述记录单元进一步用于向应答单元提供所述对应关系；所述应答单元，与记录单元相连接，用于接收所述UDR消息，并根据所述UDR消息中的所述IMPI和IMPU以及所述记录单元提供的对应关系获取与所述IMPI和IMPU对应的用户注册状态，并将所述用户注册状态下发给AS。
从上述方案中可以看出，由于本发明预先设置了在UDR消息中携带IMPI和IMPU，在请求用户注册状态时AS发送携带IMPI和IMPU的UDR消息，HSS则根据UDR消息中IMPI和IMPU以及已有IMPI和IMPU与用户注册状态的对应关系获取对应的用户注册状态，并将该注册状态通过UDA消息下发给AS。本发明通过修改现有协议，使得在IMPU与多个IMPI关联时，HSS能够正确处理请求用户注册状态的UDR消息。
附图说明
图1为IMS域中用户标识之间的对应关系示意图；
图2为根据本发明的方法的流程示意图；
图3为根据本发明的系统的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，以下举实施例对本发明进一步详细说明。
与现有技术不同的是，本发明在请求读取用户注册状态的UDR消息中设置同时携带用户标识IMPI和IMPU，从而使HSS能够明确获知与IMPU对应的IMPI。
参考图2，本实施例包括以下步骤:
步骤201，预先在UDR消息中设置同时携带IMPI和IMPU。
本实施例将UDR消息中用户标识User-Identity参数格式更改如下:
User-Identity::＝<AVP header:70010415>
   [Public-Identity]
   [Private-Identity]
   [MSISDN]
   *[AVP]
其中，Public-Identity是指IMPU，Private-Identity是指IMPI。当然也可以设置成其他类似的形式，这里不再赘述。
步骤202，AS在发送UDR消息时，根据步骤201中设置的UDR消息格式同时携带IMPI和IMPU。需要注意的是，该UDR消息中的参数Data-reference为IMSUserState，表示该UDR消息请求读取的数据类型是用户注册状态。
步骤203，HSS接收到AS发送来的UDR消息后，根据UDR消息中的IMPI和IMPU、以及HSS中预先保存的IMPI和IMPU与用户注册状态的对应关系，获取与该IMPI和IMPU对应的用户注册状态，并通过UDA消息向AS下发与该IMPI和IMPU对应的用户注册状态。
与现有技术相比，在IMPU与一个IMPI关联的情况下，本发明直接就根据IMPI和IMPU获取了对应的用户注册状态；在IMPU与多个IMPI关联的情况下，本发明能够根据UDR消息中携带的IMPI和IMPU、以及现有技术中已有的对应关系获得对应的用户注册状态，解决了现有技术在这种情况下无法处理UDR消息的问题。
参考图3，根据本发明的请求用户注册状态的系统包括AS和HSS。AS包括数据请求单元，用于向HSS发起UDR消息，并且该UDR消息中的用户标识被预先设置为包括IMPI和IMPU，即该UDR消息携带IMPI和IMPU，该数据请求单元还进一步用于接收HSS返回的UDA消息。
HSS中包括记录单元和应答单元，记录单元与应答单元相连接。其中记录单元中预先保存了IMPI和IMPU与用户注册状态的对应关系，并且记录单元还用于向应答单元提供所述对应关系。应答单元用于接收来自AS的UDR消息，并根据UDR消息中的IMPI和IMPU、以及记录单元提供的所述对应关系，获取与该IMPI和IMPU对应的用户注册状态，并通过UDA消息将所获取的用户注册状态下发给AS的数据请求单元。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，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 (2)

1、一种请求用户注册状态的方法，其特征在于，预先设置用户数据请求UDR消息中携带的用户标识包括私有用户标识IMPI和公有用户标识IMPU，该方法进一步包括以下步骤：
A.应用服务器AS向归属注册用户服务器HSS发送携带IMPI和IMPU的UDR消息；
B.HSS根据所述IMPI和IMPU以及预先保存的IMPI和IMPU与用户注册状态的对应关系获取与所述IMPI和IMPU对应的用户注册状态，并通过用户数据响应UDA消息将所述用户注册状态下发给AS。
2、一种请求用户注册状态的系统，该系统包括应用服务器AS和归属注册用户服务器HSS，所述HSS中包括用于保存私有用户标识IMPI和公有用户标识IMPU与用户注册状态对应关系的记录单元，其特征在于，所述AS中包括数据请求单元，所述HSS中进一步包括应答单元，
其中，数据请求单元，用于发送携带IMPI和IMPU的用户数据请求UDR消息，以及接收HSS下发的用户数据响应UDA消息；
所述记录单元进一步用于向应答单元提供所述对应关系；
所述应答单元，与记录单元相连接，用于接收所述UDR消息，并根据所述UDR消息中的所述IMPI和IMPU以及所述记录单元提供的对应关系获取与所述IMPI和IMPU对应的用户注册状态，并将所述用户注册状态下发给AS。
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