CN1299533C - Method for user to register on belonging signatory user's service device - Google Patents
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Translated fromChinese技术领域technical field
本发明涉及移动通信技术领域，特别是指一种用户到归属签约用户服务器(HSS)进行注册的方法。The invention relates to the technical field of mobile communication, in particular to a method for a user to register with a Home Subscriber Server (HSS).
背景技术Background technique
随着宽带网络的发展，移动通信将不仅仅局限于传统的话音通信，通过与呈现业务(presence)、短消息、网页(WEB)浏览、定位信息、推送业务(PUSH)以及文件共享等数据业务的结合，移动通信能够实现音频、视频、图片和文本等多种媒体类型的业务，以满足用户的多种需求。With the development of broadband network, mobile communication will not only be limited to traditional voice communication, but also through data services such as presence, short message, web page (WEB) browsing, location information, push service (PUSH) and file sharing. The combination of mobile communication can realize audio, video, picture and text and other media types of services to meet the various needs of users.
例如，短消息业务能够提供即时消息、聊天室以及多媒体短消息的服务；视频业务能够提供娱乐、多媒体信息和日常交流等服务；电子商务业务能够提供产品目录、搜索引擎、购物车、订单管理以及支付等服务；游戏业务能够提供单人游戏和群组游戏等服务；定位业务能够提供寻人、向导以及报警等服务；个人助理业务能够提供地址本、日程表、书签管理、文件存储、事件提醒以及电子邮件等服务。For example, short message services can provide instant messaging, chat rooms, and multimedia short message services; video services can provide services such as entertainment, multimedia information, and daily communication; e-commerce services can provide product catalogs, search engines, shopping carts, order management and Payment and other services; the game business can provide services such as single-player games and group games; the positioning business can provide services such as tracing, guides, and alarms; the personal assistant business can provide address book, schedule, bookmark management, file storage, and event reminders and services such as email.
在多种应用的推动下，第三代移动通信标准化伙伴项目(3GPP)以及第三代移动通信标准化伙伴项目2(3GPP2)等组织都先后推出了基于IP的多媒体子系统(IMS)架构，其目的是在移动网络中使用一种标准化的开放结构来实现多种多样的多媒体应用，以给用户提供更多的选择和更丰富的感受。Driven by various applications, organizations such as the 3rd Generation Partnership Project (3GPP) and the 3rd Generation Partnership Project 2 (3GPP2) have launched the IP-based Multimedia Subsystem (IMS) architecture. The purpose is to use a standardized open structure to realize a variety of multimedia applications in the mobile network, so as to provide users with more choices and richer experience.
IMS架构叠加在分组域网络之上，由呼叫状态控制功能(CSCF)实体、媒体网关控制功能(MGCF)实体、媒体资源功能(MRF)实体和(HSS)等功能实体组成。MGCF用于实现IMS网络和其它网络的互通；MRF用于提供媒体资源，如收放音，编解码和多媒体会议桥等；HSS是用户数据库，用于存储用户的签约数据和配置信息等。The IMS architecture is superimposed on the packet domain network and consists of call state control function (CSCF) entities, media gateway control function (MGCF) entities, media resource function (MRF) entities and (HSS) and other functional entities. MGCF is used to realize the intercommunication between IMS network and other networks; MRF is used to provide media resources, such as audio playback, codec and multimedia conference bridge; HSS is a user database, used to store user subscription data and configuration information, etc.
CSCF又可以分成服务CSCF(S-CSCF)、代理CSCF(P-CSCF)和查询CSCF(I-CSCF)三个逻辑实体。S-CSCF是IMS的业务交换中心，用于执行会话控制，维持会话状态，管理用户信息，产生计费信息等；P-CSCF是终端用户接入IMS的接入点，用于完成用户注册，服务质量(QoS)控制和安全管理等；I-CSCF负责IMS域之间的互通，管理S-CSCF的分配，对外隐藏网络拓扑结构和配置信息，并产生计费数据等。The CSCF can be further divided into three logical entities: the Serving CSCF (S-CSCF), the Proxy CSCF (P-CSCF) and the Inquiring CSCF (I-CSCF). S-CSCF is the service switching center of IMS, which is used to perform session control, maintain session status, manage user information, generate billing information, etc.; P-CSCF is the access point for terminal users to access IMS, and is used to complete user registration. Quality of Service (QoS) control and security management, etc.; I-CSCF is responsible for the intercommunication between IMS domains, manages the allocation of S-CSCF, hides network topology and configuration information from the outside, and generates charging data, etc.
由3GPP定义的IMS网络构架同样适用于3GPP2定义的分组网络，即IMS的实现与用户使用的终端类型无关，因此，该IMS并不限定于只应用在与3GPP相关的网络和应用上。The IMS network architecture defined by 3GPP is also applicable to the packet network defined by 3GPP2, that is, the implementation of IMS has nothing to do with the type of terminal used by the user. Therefore, the IMS is not limited to only apply to 3GPP-related networks and applications.
一个IMS用户(UE)，在底层承载的物理连接建立之后，如果要使用IMS网络提供的各种应用，就要使用自身的一个公共用户标识向网络中的HSS发起注册请求，如果该公共用户标识通过了鉴权及合法性验证，则HSS将分配一个S-CSCF为该UE进行服务，否则该用户将不能得到IMS网络提供的任何服务。注册是有生存周期的，网络为某个用户每次分配的S-CSCF，只负责处理在此次注册期间所有和该UE相关的IMS会话信令，具体实现参见3GPP TS 23.228规范。An IMS user (UE), after the physical connection of the underlying bearer is established, if it wants to use various applications provided by the IMS network, it must use its own public user ID to initiate a registration request to the HSS in the network. If the public user ID After passing the authentication and legality verification, the HSS will assign an S-CSCF to serve the UE, otherwise the user will not be able to obtain any services provided by the IMS network. Registration has a life cycle. The S-CSCF allocated by the network to a user each time is only responsible for processing all IMS session signaling related to the UE during this registration period. For specific implementation, refer to the 3GPP TS 23.228 specification.
一个用户至少包括一个公共用户标识，该公共用户标识用于标识用户待请求的业务。一个用户的所有公共用户标识分别进行注册，即每个公共用户标识的注册过程是独立的，但是因为这些公共用户标识都属于同一个用户，所以规范中规定，当某个用户使用一个公共用户标识注册成功，得到网络为其分配的S-CSCF后，该用户使用其它公共用户标识进行注册时，网络必须返回同一个S-CSCF给用户使用。即只要该用户的一个公共用户标识进行了注册，即认为该用户的其他公共用户标识也进行了隐性注册。A user includes at least one public user ID, which is used to identify the service to be requested by the user. All public user IDs of a user are registered separately, that is, the registration process of each public user ID is independent, but because these public user IDs all belong to the same user, the specification stipulates that when a user uses a public user ID After successful registration and obtaining the S-CSCF assigned by the network, when the user registers with other public user IDs, the network must return the same S-CSCF to the user. That is, as long as one public user ID of the user is registered, it is considered that other public user IDs of the user have also been implicitly registered.
如果该用户至少有一个公共用户标识曾在HSS中进行了注册，且处于有效期内，则HSS直接将当前为该用户服务的S-CSCF的名称返回给I-CSCF；If the user has at least one public user ID that has been registered in the HSS and is within the validity period, the HSS will directly return the name of the S-CSCF currently serving the user to the I-CSCF;
如果该用户至少有一个公共用户标识的注册状态是取消注册或者注册已经过期，但是HSS中还保存有该用户上次使用的S-CSCF的名称，或者，该用户作为被叫时曾由网络分配了一个S-CSCF来为其服务，则HSS将返回该为其服务过的S-CSCF的名称给I-CSCF；If the user has at least one public user ID whose registration status is deregistered or the registration has expired, but the HSS still saves the name of the S-CSCF used by the user last time, or the user was assigned by the network when it was called If an S-CSCF is provided to serve it, the HSS will return the name of the S-CSCF that has served it to the I-CSCF;
如果该申请注册UE在HSS中的签约信息内容进行了更新或者升级，则HSS必须将这种变化通知给I-CSCF，所以HSS将向I-CSCF返回现有的S-CSCF的能力集信息，此时由I-CSCF确定用户签约信息升级之前为用户分配的S-CSCF是否还能够继续为该用户服务，如果以前的S-CSCF已经无法满足升级后的用户对新业务的需求，则I-CSCF根据得到的S-CSCF能力集信息，发起对S-CSCF的重新选择；If the content of subscription information of the registered UE in the HSS is updated or upgraded, the HSS must notify the I-CSCF of this change, so the HSS will return the existing S-CSCF capability set information to the I-CSCF, At this time, the I-CSCF determines whether the S-CSCF assigned to the user before the user subscription information upgrade can continue to serve the user. The CSCF initiates reselection of the S-CSCF according to the obtained S-CSCF capability set information;
如果该用户没有任何一个公共用户标识被分配过S-CSCF，则HSS将只返回现有的S-CSCF的能力集给I-CSCF，如果这个能力集为空，表明I-CSCF可以选择任意一个S-CSCF，I-CSCF根据得到的S-CSCF能力集信息，再次向HSS发起查询，明确要求HSS返回满足用户最严格签约业务要求的S-CSCF能力集信息，然后发起对S-CSCF的重新选择。If the user does not have any public user identity assigned to the S-CSCF, the HSS will only return the capability set of the existing S-CSCF to the I-CSCF. If the capability set is empty, it means that the I-CSCF can choose any The S-CSCF and I-CSCF initiate a query to the HSS again based on the obtained S-CSCF capability set information, explicitly requesting the HSS to return the S-CSCF capability set information that meets the most choose.
图1所示为现有技术的基于IMS构架用户发起注册的流程图。该流程图适用于用户发起注册请求的公共用户标识在HSS中没有已保存的相关信息，或者在HSS中保存的相关信息已经过期，或者为了防止上次注册过期而希望在注册有效期间进行刷新的情况，同时该流程使用SIP协议作为IP多媒体会话的信令控制协议，HSS和I-CSCF以及HSS和S-CSCF之间的Cx接口使用Diameter协议来传送相关信息的。FIG. 1 is a flow chart of a user-initiated registration based on an IMS framework in the prior art. This flow chart is applicable to the public user ID that the user initiates the registration request has no relevant information saved in the HSS, or the relevant information saved in the HSS has expired, or the user wants to refresh the registration during the validity period in order to prevent the previous registration from expiring At the same time, the process uses the SIP protocol as the signaling control protocol of the IP multimedia session, and the Cx interface between the HSS and the I-CSCF and the HSS and the S-CSCF uses the Diameter protocol to transmit relevant information.
步骤101，UE建立了底层承载的物理连接之后，向其所属访问网络中的P-CSCF发送注册(Register)消息，该消息中包括：公共用户标识，私有用户标识，归属网络域名，以及申请注册UE的IP地址等信息；
步骤102，接收到Register消息的P-CSCF，对该消息中的归属网络域名信息进行解析，以获取归属网络接入点I-CSCF的地址，然后向归属网络中的I-CSCF转发UE的Register消息，该转发的Register消息中包括：P-CSCF的名称或者地址，公共用户标识，私有用户标识，P-CSCF所在访问网络的标识，以及申请注册UE的IP地址等信息；Step 102: The P-CSCF that receives the Register message parses the home network domain name information in the message to obtain the address of the home network access point I-CSCF, and then forwards the UE's Register to the I-CSCF in the home network message, the forwarded Register message includes: the name or address of the P-CSCF, the public user ID, the private user ID, the ID of the access network where the P-CSCF is located, and the IP address of the UE applying for registration, etc.;
步骤103，I-CSCF发送Cx-Query消息给HSS，该消息中的用户授权类型(User-Authorization-Type)为REGISTRATION，其表明是一次注册请求消息，该Cx-Query消息中包括：公共用户标识，私有用户标识，以及P-CSCF所在网络的标识等信息；
步骤104，HSS接收到来自I-CSCF的Cx-Query消息后，首先根据用户的签约信息以及运营商的策略，判断是否允许该UE在P-CSCF所属的网络内发起注册请求，如果不允许，则直接给I-CSCF返回包含拒绝接受此次注册信息的应答消息Cx-Query Resp，再由I-CSCF通过P-CSCF给用户返回注册失败的消息，并结束本流程；
否则，HSS判断自身是否保存有为该UE服务过的S-CSCF的名称，以及自身保存的该请求注册用户的签约文件内容是否发生更新或者升级，Otherwise, the HSS judges whether it has saved the name of the S-CSCF that has served the UE, and whether the content of the subscription file of the user requesting to register has been updated or upgraded.
如果HSS自身保存有为该UE服务过的S-CSCF的名称，且自身保存的该请求注册用户的签约文件内容没有发生更新或者升级，则HSS给I-CSCF返回包含S-CSCF名称的Cx-Query Resp后，执行步骤107；If the HSS itself has saved the name of the S-CSCF that has served the UE, and the content of the subscription file of the user requesting to register has not been updated or upgraded, the HSS returns to the I-CSCF a Cx- After Query Resp, execute
如果HSS自身保存有为该UE服务过的S-CSCF的名称，且自身保存的该请求注册用户的签约文件内容发生了更新或者升级，则HSS给I-CSCF返回包含S-CSCF名称和现有的S-CSCF能力集信息的Cx-Query Resp后，由I-CSCF进一步判断返回的S-CSCF名称是否可用，如果可以使用，则执行步骤107，否则，I-CSCF将需要重新选择S-CSCF，则执行步骤105；If the HSS itself has saved the name of the S-CSCF that has served the UE, and the content of the subscription file of the user requesting to register has been updated or upgraded, the HSS will return to the I-CSCF the name of the S-CSCF containing the name of the S-CSCF and the existing After the Cx-Query Resp of the S-CSCF capability set information, the I-CSCF further judges whether the returned S-CSCF name is available, and if it can be used, go to
如果HSS自身没有已经分配的为该UE服务过的S-CSCF的名称，且自身保存的该请求注册用户的签约文件内容发生了更新或者升级，则HSS只给I-CSCF返回包含现有的S-CSCF能力集信息的Cx-Query Resp后，执行步骤105；If the HSS itself does not have the name of the S-CSCF that has been assigned to serve the UE, and the content of the subscription file of the user requesting to register has been updated or upgraded, the HSS will only return the name of the existing S-CSCF to the I-CSCF. - After Cx-Query Resp of CSCF capability set information, execute
步骤105，I-CSCF向HSS发送Cx-Select-Pull请求消息，该消息中的用户授权类型(User-Authorization-Type)为REGISTRATION_AND_CAPABILITIES，其目的是明确表明I-CSCF要求HSS返回能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息，作为选择S-CSCF时的输入信息，该Cx-Select-Pull请求消息中包括：公共用户标识，私有用户标识等信息；In
步骤106，HSS接收到来自I-CSCF的Cx-Select-Pull请求消息后，给I-CSCF返回包含能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息的Cx-Select-Pull Resp消息，该Cx-Select-Pull Resp消息中包括：能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息；Step 106, after the HSS receives the Cx-Select-Pull request message from the I-CSCF, it returns to the I-CSCF the Cx-Select-Pull that includes the S-CSCF capability set information that can support the most stringent service subscription requirements of the applying registered user Resp message, the Cx-Select-Pull Resp message includes: the S-CSCF capability set information that can support the most stringent service contract requirements of the registered user;
步骤107，I-CSCF根据HSS返回的S-CSCF的名称进行域名解析，或者，根据能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息中获取的S-CSCF的名称进行域名解析，从而得到S-CSCF的地址，Step 107: The I-CSCF performs domain name resolution based on the name of the S-CSCF returned by the HSS, or performs domain name resolution based on the name of the S-CSCF obtained from the S-CSCF capability set information that can support the most stringent service contract requirements of the registered user. Parse to obtain the address of the S-CSCF,
如果I-CSCF无法根据能够支持该申请注册用户最严格业务签约要求的的能力集信息得到一个新的S-CSCF，则I-CSCF通过P-CSCF给用户返回注册失败的消息，并结束本流程；If the I-CSCF cannot obtain a new S-CSCF based on the capability set information that can support the most stringent service subscription requirements of the user applying for registration, the I-CSCF returns a registration failure message to the user through the P-CSCF, and ends this process ;
根据签约信息，如果不需要网络拓扑隐藏功能，则归属网络的联系域名为所得到的S-CSCF；如果需要网络拓扑隐藏功能，则归属网络的联系域名为实现该功能的I-CSCF，即P-CSCF将所有的会话信令都转发给实现隐藏功能的I-CSCF，由该执行网络拓扑隐藏功能的I-CSCF将会话信令转发给归属网络的联系域名S-CSCF；According to the contract information, if the network topology hiding function is not required, the contact domain name of the home network is the obtained S-CSCF; if the network topology hiding function is required, the contact domain name of the home network is the I-CSCF implementing the function, that is, P -CSCF forwards all session signaling to the I-CSCF that implements the concealment function, and the I-CSCF that implements the network topology concealment function forwards the session signaling to the contact domain name S-CSCF of the home network;
假设在本实施例中不需要网络拓扑隐藏功能，则I-CSCF向该S-CSCF发送Register消息，该Register消息中包括P-CSCF域名或者地址，公共用户标识，私有用户标识，P-CSCF所在网络的标识，申请注册UE的IP地址等信息；在需要实现网络拓扑隐藏功能时，该消息中还包括实现隐藏功能的I-CSCF域名的信息；Assuming that the network topology hiding function is not needed in this embodiment, the I-CSCF sends a Register message to the S-CSCF, and the Register message includes the P-CSCF domain name or address, public user ID, private user ID, and the location of the P-CSCF. Network identification, information such as the IP address of the UE applying for registration; when the network topology hiding function needs to be realized, the message also includes the information of the I-CSCF domain name that realizes the hiding function;
步骤108，S-CSCF给HSS发送Cx-Put消息，并等待HSS返回包含确认信息的Cx-Put Resp应答消息，以使HSS保存用于该用户的S-CSCF的名称，其中该Cx-Put消息包括：公共用户标识，私有用户标识，S-CSCF名称等信息；
步骤109，S-CSCF接收到来自HSS的Cx-Put Resp后，保存P-CSCF的名称或者地址，以及P-CSCF所在网络的标识等信息，以用于向UE转发会话信令，之后，S-CSCF向HSS发送Cx-Pull请求消息，以便从HSS的用户签约信息中下载与业务有关的数据，并等待HSS给返回的Cx-Pull Resp消息，该Cx-Pull消息中包括：公共用户标识，私有用户标识等信息，Cx-PullResp消息中包括：用户信息，以及安全信息等，其中的用户信息用于用户接入到各种业务控制平台；Step 109, after the S-CSCF receives the Cx-Put Resp from the HSS, it saves the name or address of the P-CSCF, and the identifier of the network where the P-CSCF is located, so as to forward the session signaling to the UE. After that, the S-CSCF - The CSCF sends a Cx-Pull request message to the HSS to download service-related data from the user subscription information of the HSS, and waits for the returned Cx-Pull Resp message from the HSS. The Cx-Pull message includes: public user identity, Private user ID and other information, the Cx-PullResp message includes: user information, security information, etc., where the user information is used for user access to various service control platforms;
步骤110，S-CSCF根据从用户信息中得到的过滤规则，将注册信息发送到相关的业务控制平台执行适当的业务控制流程；
步骤111，S-CSCF通过I-CSCF以及P-CSCF，给UE返回200OK消息。In step 111, the S-CSCF returns a 200 OK message to the UE through the I-CSCF and the P-CSCF.
至此，该用户的一个公共用户标识完成注册。At this point, a public user ID for the user is registered.
上述用户注册流程存在以下问题：上述步骤105和步骤106的触发是由于步骤104中HSS返回给I-CSCF的信息不全而导致的，即如果HSS只给I-CSCF返回包含现有的S-CSCF能力集的信息，则需要触发步骤105和步骤106，以获取能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集的信息。The above user registration process has the following problem: the triggering of the
而步骤105与步骤103的请求消息中，所携带的信息基本相同，其唯一的区别在于用户授权类型信息有所差别，但这种差别仅仅是类型的区别而已，其并没有带给HSS任何新的信息，同样地，在步骤106中，HSS所返回的信息也没有给I-CSCF返回更多的更有价值的信息。根据上述分析可以看出，步骤105和步骤106是冗余的步骤，其增加了HSS和I-CSCF之间接口的负荷。The information carried in the request message in
发明内容Contents of the invention
有鉴于此，本发明的目的在于提供了一种用户到HSS进行注册的方法，优化了用户的注册流程，且减轻了HSS和I-CSCF之间接口的负荷。In view of this, the object of the present invention is to provide a method for a user to register with the HSS, which optimizes the user's registration process and reduces the load on the interface between the HSS and the I-CSCF.
为达到上述目的，本发明的技术方案是这样实现的：In order to achieve the above object, technical solution of the present invention is achieved in that way:
一种用户到归属签约用户服务器进行注册的方法，该方法包括以下步骤：A method for a user to register with a home subscriber server, the method includes the following steps:
a、访问网络内的P-CSCF接收到来自用户的注册Register消息后，根据该消息中的信息解析出归属网络接入点I-CSCF的地址，并向该I-CSCF发送注册消息，然后，由接收到Register消息的I-CSCF向本归属网络内的HSS发送Cx-Query消息；a. After receiving the Register message from the user, the P-CSCF in the visited network parses out the address of the home network access point I-CSCF according to the information in the message, and sends a registration message to the I-CSCF, and then, The I-CSCF that receives the Register message sends a Cx-Query message to the HSS in the home network;
b、HSS根据接收到的Cx-Query消息，向I-CSCF返回包含S-CSCF名称和/或能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息的应答消息Cx-Query Resp，由I-CSCF根据应答消息中返回的信息确定最终的S-CSCF，并向该最终的S-CSCF发送注册消息，然后，继续执行正常的后续处理步骤。b. According to the received Cx-Query message, the HSS returns to the I-CSCF a response message Cx-Query Resp containing the name of the S-CSCF and/or the S-CSCF capability set information that can support the most stringent service subscription requirements of the registered user , the I-CSCF determines the final S-CSCF according to the information returned in the response message, and sends a registration message to the final S-CSCF, and then continues to perform normal subsequent processing steps.
较佳地，该方法进一步包括：如果I-CSCF不能从应答消息中包括的能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息选出S-CSCF，则通过P-CSCF给用户返回注册失败的消息，并结束本流程。Preferably, the method further includes: if the I-CSCF cannot select the S-CSCF from the S-CSCF capability set information included in the response message that can support the most stringent service subscription requirements of the registered user, then send the S-CSCF to the S-CSCF through the P-CSCF The user returns a registration failure message and ends this process.
较佳地，HSS接收到的Cx-Query消息后，所述步骤b进一步包括：首先根据用户的签约信息以及运营商的策略，判断是否允许该UE在P-CSCF所属的网络内发起注册请求，如果不允许，通过I-CSCF和P-CSCF直接给用户返回注册失败的消息，并结束本流程，否则再后续步骤。Preferably, after the HSS receives the Cx-Query message, the step b further includes: first, according to the user's subscription information and the operator's policy, judging whether the UE is allowed to initiate a registration request in the network to which the P-CSCF belongs, If not allowed, the I-CSCF and P-CSCF will directly return a message of registration failure to the user, and end this procedure, otherwise proceed to the next step.
较佳地，如果HSS自身保存有为该UE服务过的S-CSCF的名称，且该申请注册UE在HSS中的签约信息内容进行了更新或升级，则步骤b所述为：HSS返回包含为该UE服务过的S-CSCF名称和能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息的应答消息，并由I-CSCF向最终确定的S-CSCF发送注册消息后，继续执行正常的后续处理步骤。Preferably, if the HSS itself saves the name of the S-CSCF that has served the UE, and the content of the subscription information of the UE that has applied for registration in the HSS has been updated or upgraded, then step b is as follows: the HSS returns a message containing: The name of the S-CSCF served by the UE and the response message of the S-CSCF capability set information that can support the most stringent service subscription requirements of the user applying for registration, and after the I-CSCF sends the registration message to the finalized S-CSCF, continue Proceed with normal post-processing steps.
应用本发明，当HSS根据接收到来自I-CSCF的Cx-Query消息后，向I-CSCF返回包含S-CSCF名称和或能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息的应答消息，再继续执行后续步骤，从而精简了现有技术中的步骤105和步骤106，优化了用户的注册流程，减轻了HSS和I-CSCF之间接口的负荷。同时，本发明对现有网络结构和业务实现没有任何影响，也不需要修改现有的接口规范，因而具有很好的兼容性和可扩展性。Applying the present invention, when the HSS receives the Cx-Query message from the I-CSCF, it returns to the I-CSCF the S-CSCF capability set information that includes the name of the S-CSCF and or can support the most stringent service subscription requirements of the registered user Response message, and then continue to perform subsequent steps, thereby simplifying
附图说明Description of drawings
图1所示为现有技术基于IMS构架的用户发起注册的流程图；Fig. 1 shows the flow chart of the user-initiated registration based on the IMS framework in the prior art;
图2所示为应用本发明的基于IMS构架的用户发起注册的流程图。Fig. 2 is a flow chart of the user-initiated registration based on the IMS framework applying the present invention.
具体实施方式Detailed ways
为使本发明的技术方案更加清楚，下面对本发明再做进一步地详细说明。In order to make the technical solution of the present invention clearer, the present invention will be further described in detail below.
本发明的思路是：当HSS接收到来自I-CSCF的Cx-Query消息后，向I-CSCF返回包含S-CSCF名称和或能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息的应答消息，并由I-CSCF根据该应答消息选定S-CSCF，并向该选定的S-CSCF发送Register消息，然后，继续执行后续处理步骤。The idea of the present invention is: after the HSS receives the Cx-Query message from the I-CSCF, it returns to the I-CSCF the S-CSCF capability set that includes the name of the S-CSCF and or can support the most stringent service subscription requirements of the registered user The I-CSCF selects an S-CSCF according to the response message, and sends a Register message to the selected S-CSCF, and then continues to perform subsequent processing steps.
本发明的注册流程适用于用户发起注册请求的公共用户标识在HSS中没有已保存的相关信息，或者在HSS中保存的相关信息已经过期，或者为了防止上次注册过期而希望在注册有效期间进行刷新的情况。The registration process of the present invention is applicable to the public user identification that the user initiates a registration request, and there is no relevant information saved in the HSS, or the relevant information saved in the HSS has expired, or it is desired to perform registration during the validity period in order to prevent the previous registration from expiring. Refresh situation.
图2所示为应用本发明的基于IMS构架用户发起注册的流程图。在本实施例中，使用SIP协议作为IP多媒体会话的信令控制协议，HSS和I-CSCF以及HSS和S-CSCF之间的Cx接口使用Diameter协议来传送相关信息的。Fig. 2 is a flow chart of the user-initiated registration based on the IMS framework applying the present invention. In this embodiment, the SIP protocol is used as the signaling control protocol of the IP multimedia session, and the Cx interface between the HSS and the I-CSCF and the HSS and the S-CSCF uses the Diameter protocol to transmit related information.
步骤201，UE建立了底层承载的物理连接之后，向其所属访问网络中的P-CSCF发送Register消息，该消息中包括：公共用户标识，私有用户标识，归属网络域名，以及申请注册UE的IP地址等信息；Step 201, after the UE establishes the physical connection of the underlying bearer, it sends a Register message to the P-CSCF in the access network to which it belongs, and the message includes: public user ID, private user ID, home network domain name, and the IP address of the UE applying for registration Address and other information;
步骤202，接收到Register消息的P-CSCF，对该消息中的归属网络域名信息进行解析，以获取归属网络接入点I-CSCF的地址，然后向归属网络中的I-CSCF转发UE的Register消息，该转发的Register消息中包括：P-CSCF的名称或者地址，公共用户标识，私有用户标识，P-CSCF所在访问网络的标识，以及申请注册UE的IP地址等信息；Step 202: The P-CSCF that receives the Register message parses the home network domain name information in the message to obtain the address of the home network access point I-CSCF, and then forwards the UE's Register to the I-CSCF in the home network message, the forwarded Register message includes: the name or address of the P-CSCF, the public user ID, the private user ID, the ID of the access network where the P-CSCF is located, and the IP address of the UE applying for registration, etc.;
步骤203，I-CSCF发送Cx-Query消息给HSS，该消息中的用户授权类型(User-Authorization-Type)为REGISTRATION，其表明是一次注册请求消息，该Cx-Query消息中包括：公共用户标识，私有用户标识，以及P-CSCF所在网络的标识等信息；In step 203, the I-CSCF sends a Cx-Query message to the HSS. The User-Authorization-Type in the message is REGISTRATION, which indicates that it is a registration request message. The Cx-Query message includes: public user identification , the private user ID, and the ID of the network where the P-CSCF is located;
步骤204，HSS接收到来自I-CSCF的Cx-Query消息后，首先根据用户的签约信息以及运营商的策略，判断是否允许该UE在P-CSCF所属的网络内发起注册请求，如果不允许，则直接给I-CSCF返回包含拒绝接受此次注册信息的应答消息Cx-Query Resp，再由I-CSCF通过P-CSCF给用户返回注册失败的消息，并结束本流程；Step 204, after the HSS receives the Cx-Query message from the I-CSCF, it first judges whether the UE is allowed to initiate a registration request in the network to which the P-CSCF belongs according to the user's subscription information and the operator's policy, if not, Then directly return to the I-CSCF the response message Cx-Query Resp containing the information of refusing to accept the registration, and then the I-CSCF returns the registration failure message to the user through the P-CSCF, and ends this process;
否则，HSS判断自身是否保存有为该UE服务过的S-CSCF的名称，以及自身保存的该请求注册用户的签约文件内容是否发生更新或者升级，Otherwise, the HSS judges whether it has saved the name of the S-CSCF that has served the UE, and whether the content of the subscription file of the user requesting to register has been updated or upgraded.
如果HSS自身保存有为该UE服务过的S-CSCF的名称，且自身保存的该请求注册用户的签约文件内容没有发生更新或者升级，则HSS给I-CSCF返回包含S-CSCF名称的Cx-Query Resp后，执行步骤205；If the HSS itself has saved the name of the S-CSCF that has served the UE, and the content of the subscription file of the user requesting to register has not been updated or upgraded, the HSS returns to the I-CSCF a Cx- After Query Resp, execute step 205;
如果HSS自身保存有为该UE服务过的S-CSCF的名称，且自身保存的该请求注册用户的签约文件内容发生了更新或者升级，则HSS直接给I-CSCF返回包含S-CSCF名称和能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息的Cx-Query Resp后，执行步骤205；If the HSS itself has saved the name of the S-CSCF that has served the UE, and the content of the subscription file of the user requesting to register has been updated or upgraded, the HSS will directly return to the I-CSCF the name of the S-CSCF containing the name of the S-CSCF and the After supporting the Cx-Query Resp of the S-CSCF capability set information of the most stringent service contracting requirements of the applying registered user, execute step 205;
如果HSS自身没有已经分配的为该UE服务过的S-CSCF的名称，且自身保存的该请求注册用户的签约文件内容发生了更新或者升级，则HSS也给I-CSCF返回包含能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息的Cx-Query Resp后，执行步骤205；If the HSS itself does not have the name of the S-CSCF that has been assigned to serve the UE, and the content of the subscription file of the user requesting registration saved by itself has been updated or upgraded, the HSS will also return to the I-CSCF that can support the application After registering the Cx-Query Resp of the S-CSCF capability set information of the user's most stringent service contract requirements, execute step 205;
步骤205，I-CSCF根据HSS返回的S-CSCF的名称进行域名解析，或者，根据能够支持该申请注册用户最严格业务签约要求的S-CSCF能力集信息中获取的S-CSCF的名称进行域名解析，从而得到S-CSCF的地址，Step 205: The I-CSCF performs domain name resolution based on the name of the S-CSCF returned by the HSS, or performs domain name resolution based on the name of the S-CSCF obtained from the S-CSCF capability set information that can support the most stringent service contract requirements of the applicant registration user. Parse to obtain the address of the S-CSCF,
如果I-CSCF无法根据能够支持该申请注册用户最严格业务签约要求的的能力集信息得到一个新的S-CSCF，则I-CSCF通过P-CSCF给用户返回注册失败的消息，并结束本流程；If the I-CSCF cannot obtain a new S-CSCF based on the capability set information that can support the most stringent service subscription requirements of the user applying for registration, the I-CSCF returns a registration failure message to the user through the P-CSCF, and ends this process ;
根据签约信息，如果不需要网络拓扑隐藏功能，则归属网络的联系域名为所得到的S-CSCF；如果需要网络拓扑隐藏功能，则归属网络的联系域名为实现该功能的I-CSCF，即P-CSCF将所有的会话信令都转发给实现隐藏功能的I-CSCF，由该执行网络拓扑隐藏功能的I-CSCF将会话信令转发给归属网络的联系域名S-CSCF；According to the contract information, if the network topology hiding function is not required, the contact domain name of the home network is the obtained S-CSCF; if the network topology hiding function is required, the contact domain name of the home network is the I-CSCF implementing the function, that is, P -CSCF forwards all session signaling to the I-CSCF that implements the concealment function, and the I-CSCF that implements the network topology concealment function forwards the session signaling to the contact domain name S-CSCF of the home network;
假设在本实施例中不需要网络拓扑隐藏功能，则I-CSCF向该S-CSCF发送Register消息，该Register消息中包括P-CSCF域名或者地址，公共用户标识，私有用户标识，P-CSCF所在网络的标识，申请注册UE的IP地址等信息；在需要实现网络拓扑隐藏功能时，该消息中还包括实现隐藏功能的I-CSCF域名的信息；Assuming that the network topology hiding function is not required in this embodiment, the I-CSCF sends a Register message to the S-CSCF, and the Register message includes the P-CSCF domain name or address, public user ID, private user ID, and the location of the P-CSCF. Network identification, information such as the IP address of the UE applying for registration; when the network topology hiding function needs to be realized, the message also includes the information of the I-CSCF domain name that realizes the hiding function;
步骤206，S-CSCF给HSS发送Cx-Put消息，并等待HSS返回包含确认信息的Cx-Put Resp应答消息，以使HSS保存用于该用户的S-CSCF的名称，其中该Cx-Put消息包括：公共用户标识，私有用户标识，S-CSCF名称等信息；Step 206, the S-CSCF sends a Cx-Put message to the HSS, and waits for the HSS to return a Cx-Put Resp response message containing confirmation information, so that the HSS saves the name of the S-CSCF used for the user, wherein the Cx-Put message Including: public user ID, private user ID, S-CSCF name and other information;
步骤207，S-CSCF接收到来自HSS的Cx-Put Resp后，保存P-CSCF的名称或者地址，以及P-CSCF所在网络的标识等信息，以用于向UE转发会话信令，之后，S-CSCF向HSS发送Cx-Pull请求消息，以便从HSS的用户签约信息中下载与业务有关的数据，并等待HSS给返回的Cx-Pull Resp消息，该Cx-Pull消息中包括：公共用户标识，私有用户标识等信息，Cx-PullResp消息中包括：用户信息，以及安全信息等，其中的用户信息用于用户接入到各种业务控制平台；Step 207, after the S-CSCF receives the Cx-Put Resp from the HSS, it saves the name or address of the P-CSCF, and the identifier of the network where the P-CSCF is located, so as to forward the session signaling to the UE. After that, the S-CSCF - The CSCF sends a Cx-Pull request message to the HSS to download service-related data from the user subscription information of the HSS, and waits for the returned Cx-Pull Resp message from the HSS. The Cx-Pull message includes: public user identity, Private user ID and other information, the Cx-PullResp message includes: user information, security information, etc., where the user information is used for users to access various service control platforms;
步骤208，S-CSCF根据从用户信息中得到的过滤规则，将注册信息发送到相关的业务控制平台执行适当的业务控制流程；Step 208, the S-CSCF sends the registration information to the relevant service control platform to execute an appropriate service control process according to the filtering rules obtained from the user information;
步骤209，S-CSCF通过I-CSCF以及P-CSCF，给UE返回200OK消息。In step 209, the S-CSCF returns a 200 OK message to the UE through the I-CSCF and the P-CSCF.
至此，该用户的一个公共用户标识完成注册。At this point, a public user ID for the user is registered.
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。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.
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| JP2006548075AJP4493104B2 (en) | 2004-01-07 | 2005-01-06 | How to reduce the home subscriber server interface load |
| US10/585,288US20070189215A1 (en) | 2004-01-07 | 2005-01-06 | Method for reducing interface load of home subscriber server |
| EP05700396AEP1703746B1 (en) | 2004-01-07 | 2005-01-06 | A method for reducing interface load of home subscriber server |
| CA2552531ACA2552531C (en) | 2004-01-07 | 2005-01-06 | A method for reducing interface load of home subscriber server |
| KR1020067015936AKR100741152B1 (en) | 2004-01-07 | 2005-01-06 | A method for reducing interface load of home subscriber server |
| PCT/CN2005/000021WO2005069645A1 (en) | 2004-01-07 | 2005-01-06 | A method for reducing interface load of home subscriber server |
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