WO2017092229A1 - 基于多业务的ims注册方法和ims注册系统 - Google Patents

基于多业务的ims注册方法和ims注册系统 Download PDF

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Publication number
WO2017092229A1
WO2017092229A1 PCT/CN2016/080836 CN2016080836W WO2017092229A1 WO 2017092229 A1 WO2017092229 A1 WO 2017092229A1 CN 2016080836 W CN2016080836 W CN 2016080836W WO 2017092229 A1 WO2017092229 A1 WO 2017092229A1
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Prior art keywords
service
cscf
user equipment
access point
ims
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PCT/CN2016/080836
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English (en)
French (fr)
Inventor
张子敬
武选航
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017092229A1 publication Critical patent/WO2017092229A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • 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]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a multi-service based IMS registration method and a multi-service based IMS registration system.
  • IMS Internet Protocol Multimedia Subsystem
  • the IMS registration consists of two registrations, initial registration and authentication registration.
  • the initial registration process is initiated by the user equipment (User Equipment, UE) to register with the IMS network. Since the identity authentication is not performed at this time, the network sends an unauthorized response and carries the authentication verification parameter (RAND, AUTH).
  • An authentication challenge is initiated to the user equipment, and the user equipment receives the authentication response parameter, and then initiates an authentication registration process.
  • the authentication registration process is performed by the user equipment to send the challenge response value to the network, and the network completes the authentication. And the process of key negotiation.
  • VoLTE Voice over LTE (Long Term Evolution), LTE-based voice services) and RCS (Rich Communication Services)
  • Registration means that the terminal registers with two IMSs and accesses the RCS converged communication service and the VoLTE service respectively.
  • the IMPI IP Multimedia Private Identity
  • IMPU IP Multimedia Public Identity
  • key source are the same when the two IMS are registered, except that they pass different APN (Access Point Name) accesses the network.
  • the RCS passes the PS (Packet Switch). Domain NET APN access (such as CMNET APN), VoLTE is accessed through a dedicated IMS APN in order to guarantee QoS (Quality of Service).
  • PS Packet Switch
  • Domain NET APN such as CMNET APN
  • VoLTE is accessed through a dedicated IMS APN in order to guarantee QoS (Quality of Service).
  • the invention is based on at least one of the above technical problems, and proposes a new multi-service based IMS registration scheme, which can greatly reduce network signaling overhead, reduce network access delay, and effectively improve user experience. .
  • the present invention provides a multi-service based IMS registration method, including: when a user equipment needs to process multiple services based on the IMS service, respectively, sending an activation request to the access point corresponding to the multiple services, and a CSCF (Call Session Control Function) discovery request; receiving an IP address assigned to the user equipment by an access point corresponding to each of the multiple services, and receiving a corresponding address of each service a P-CSCF (Proxy Call Session Control Function) discovery list of the in-point feedback; selecting a P having the same network address from the P-CSCF discovery list allocated by the access point corresponding to the multiple services Sending an IMS registration request to the P-CSCF based on the IP address assigned to the user equipment and the identity of the user equipment by the access point corresponding to each service, and passing through the multiple services
  • the access point corresponding to the specified service performs the IMS initial registration process.
  • the user equipment when the user equipment obtains the IP address assigned by the access point corresponding to each service of the multiple services and the feedback P-CSCF discovery list, by selecting the P-CSCF having the same network address, And sending an IMS registration request to the P-CSCF based on the IP address assigned by the access point corresponding to each service and the identity of the user equipment, and performing an IMS initial registration process by using the access point corresponding to the specified service, so that the user equipment needs to be processed based on
  • the access of multiple services can be completed through one registration process, thereby greatly reducing the overhead of network signaling, reducing the delay of network access, and effectively improving the user experience.
  • the IP address assigned to the user equipment and the identity identifier of the user equipment are sent to the P-CSCF based on an access point corresponding to each service.
  • the step of performing the IMS initial registration process by using the access point corresponding to the specified service in the multiple services, where the IMS registration request includes:
  • the user equipment sends an initial registration request to the P-CSCF, where the initial registration request includes an IP address assigned by the access point corresponding to each service to the user equipment and an identity of the user equipment.
  • the P-CSCF routes the initial registration request to an I-CSCF (Interrogation Call Session Control Function) for the I-CSCF according to the home network domain name in the initial registration request.
  • I-CSCF Interrogation Call Session Control Function
  • the I-CSCF Querying a home subscriber server (ie, HSS) and selecting an S-CSCF (Serving Call Session Control Function); the I-CSCF sends the initial registration request to the S-CSCF; The CSCF requests the home subscription subscriber server to download a user authentication vector according to the identity identifier of the user equipment included in the initial registration request, and the home subscription subscriber server generates the identifier according to the identity identifier of the user equipment. a user authentication vector, and fed back to the S-CSCF; after receiving the user authentication vector, the S-CSCF passes the I-CSCF and the P-CSCF An authentication challenge is returned to the user equipment.
  • HSS home subscriber server
  • S-CSCF Serving Call Session Control Function
  • the service corresponding to the IP address may be specified in the initial registration request; of course, if the IP address assigned to the user equipment by the access point corresponding to each service has been If the correspondence between the IP address and the service can be indicated, the corresponding description may not be added in the initial registration request.
  • the method further includes: after receiving the authentication challenge, the user equipment performs an authentication registration process by using an access point corresponding to the specified service; After the authentication and registration process, the home subscriber server records the IP address assigned by the access point corresponding to each service to the user equipment, and marks that the user equipment has registered the multiple services.
  • the activation request is a PDP (Packet Data Protocol) activation request or a DHCP (Dynamic Host Configuration Protocol) activation request.
  • PDP Packet Data Protocol
  • DHCP Dynamic Host Configuration Protocol
  • the identity of the user equipment includes: an IP multimedia private identifier of the user equipment and an IP multimedia public identity.
  • the multiple services include: a VoLTE service and
  • the access point corresponding to the VoLTE service is an IMS APN
  • the access point corresponding to the RCS service is a NET APN
  • the access point corresponding to the specified service is the IMS APN.
  • the service quality of the VoLTE service is generally required to be high. Therefore, in order to ensure the quality of service of the VoLTE service, the access point corresponding to the VoLTE service can be set to be an IMS APN, and the user equipment needs to process the VoLTE service and the RCS service. At this time, the IMS initial registration process can be performed through the IMS APN. Of course, in other embodiments of the invention, the IMS initial registration process may also be performed via the NET APN.
  • a multi-service based IMS registration system including: a request sending unit, configured to separately access the multiple services when the user equipment needs to process multiple services based on the IMS service
  • the corresponding access point sends an activation request and a CSCF discovery request
  • the receiving unit is configured to receive an IP address allocated by the access point corresponding to each service of the multiple services to the user equipment, and receive each service a P-CSCF discovery list fed back by the corresponding access point
  • a selecting unit configured to select a P-CSCF having the same network address from a P-CSCF discovery list allocated by the access point corresponding to the multiple services; And sending an IMS registration request to the P-CSCF based on the IP address allocated to the user equipment by the access point corresponding to each service, and the identity identifier of the user equipment, and passing the multiple services.
  • the access point corresponding to the specified service performs the IMS initial registration process.
  • the user equipment when the user equipment obtains the IP address assigned by the access point corresponding to each service of the multiple services and the feedback P-CSCF discovery list, by selecting the P-CSCF having the same network address, And sending an IMS registration request to the P-CSCF based on the IP address assigned by the access point corresponding to each service and the identity of the user equipment, and performing an IMS initial registration process by using the access point corresponding to the specified service, so that the user equipment needs to be processed based on
  • the access of multiple services can be completed through one registration process, thereby greatly reducing the overhead of network signaling, reducing the delay of network access, and effectively improving the user experience.
  • the performing, by the registration unit, the IMS initial registration process specifically includes: the user equipment sending an initial registration request to the P-CSCF, where the initial registration request includes the each The IP address of the user equipment and the identity of the user equipment are allocated by the access point corresponding to the service; the P-CSCF routes the initial registration request to the I according to the home network domain name in the initial registration request.
  • the I-CSCF for the I-CSCF to check Querying the home subscriber server and selecting an S-CSCF; the I-CSCF sends the initial registration request to the S-CSCF; the S-CSCF according to the identity of the user equipment included in the initial registration request The identifier is sent to the home subscriber server to download a user authentication vector; the home subscriber server generates the user authentication vector according to the identity identifier of the user equipment, and feeds back to the S-CSCF; After receiving the user authentication vector, the S-CSCF returns an authentication challenge to the user equipment by using the I-CSCF and the P-CSCF.
  • the registration unit is further configured to: after receiving the authentication challenge, the user equipment performs an authentication registration process by using an access point corresponding to the designated service; After the user equipment completes the authentication registration process, the home subscription subscriber server records an IP address assigned by the access point corresponding to each service to the user equipment, and marks that the user equipment is registered.
  • the plurality of services is further configured to: after receiving the authentication challenge, the user equipment performs an authentication registration process by using an access point corresponding to the designated service; After the user equipment completes the authentication registration process, the home subscription subscriber server records an IP address assigned by the access point corresponding to each service to the user equipment, and marks that the user equipment is registered. The plurality of services.
  • the activation request is a PDP activation request or a DHCP activation request
  • the identity identifier of the user equipment includes: an IP multimedia private identifier of the user equipment and an IP multimedia public identifier.
  • the multiple services include: a VoLTE service and an RCS service; the access point corresponding to the VoLTE service is an IMS APN, and the access point corresponding to the RCS service is a NET APN; The access point corresponding to the specified service is the IMS APN.
  • the service quality of the VoLTE service is generally required to be high. Therefore, in order to ensure the quality of service of the VoLTE service, the access point corresponding to the VoLTE service can be set to be an IMS APN, and the user equipment needs to process the VoLTE service and the RCS service. At this time, the IMS initial registration process can be performed through the IMS APN. Of course, in other embodiments of the invention, the IMS initial registration process may also be performed via the NET APN.
  • the user equipment when the user equipment needs to process multiple services based on the IMS service, the user equipment can complete the access of multiple services through one registration process, thereby greatly reducing the network signaling overhead and reducing the network access delay. When it is effective, it improves the user experience.
  • FIG. 1 shows a schematic flow chart of a multi-service based IMS registration method according to an embodiment of the present invention
  • FIG. 2 shows a schematic block diagram of a multi-service based IMS registration system in accordance with an embodiment of the present invention
  • FIG. 3 shows a schematic diagram of a VoLTE and RCS single registration process in accordance with one embodiment of the present invention.
  • FIG. 1 shows a schematic flow chart of a multi-service based IMS registration method in accordance with an embodiment of the present invention.
  • a multi-service based IMS registration method includes:
  • Step 102 When the user equipment needs to process multiple services based on the IMS service, the user equipment sends an activation request and a CSCF discovery request to the access point corresponding to the multiple services respectively.
  • Step 104 Receive an IP address allocated by the access point corresponding to each service of the multiple services to the user equipment, and receive a P-CSCF discovery list fed back by the access point corresponding to each service.
  • Step 106 Select a P-CSCF having the same network address from the P-CSCF discovery list allocated by the access point corresponding to the multiple services.
  • Step 108 Send an IMS registration request to the P-CSCF based on the IP address assigned to the user equipment by the access point corresponding to each service, and the identity identifier of the user equipment, and pass the multiple services.
  • the access point corresponding to the specified service performs the IMS initial registration process.
  • the user equipment when the user equipment obtains the IP address assigned by the access point corresponding to each service of the multiple services and the feedback P-CSCF discovery list, by selecting the P-CSCF having the same network address, And based on the IP address and user settings assigned by the access point corresponding to each service
  • the identity of the IMS sends an IMS registration request to the P-CSCF, and performs an IMS initial registration process by using the access point corresponding to the specified service, so that the user equipment can complete multiple registration processes through multiple registrations of the IMS service.
  • the access of the service can greatly reduce the overhead of network signaling, reduce the delay of network access, and effectively improve the user experience.
  • the IMS registration request is sent to the P-CSCF based on the IP address assigned to the user equipment by the access point corresponding to each service and the identity of the user equipment, and And the step of performing the IMS initial registration process by the access point corresponding to the specified service in the multiple services, specifically:
  • the user equipment sends an initial registration request to the P-CSCF, where the initial registration request includes an IP address assigned by the access point corresponding to each service to the user equipment and an identity of the user equipment.
  • the P-CSCF routes the initial registration request to the I-CSCF according to the home network domain name in the initial registration request, for the I-CSCF to query the home subscription user server and select the S-CSCF;
  • the I-CSCF sends the initial registration request to the S-CSCF; the S-CSCF requests the home subscription server to download the user profile according to the identity identifier of the user equipment included in the initial registration request.
  • the home subscriber server generates the user authentication vector according to the identity identifier of the user equipment, and feeds back to the S-CSCF; after receiving the user authentication vector, the S-CSCF And returning an authentication challenge to the user equipment by using the I-CSCF and the P-CSCF.
  • the method further includes: after receiving the authentication challenge, the user equipment performs an authentication registration process by using an access point corresponding to the specified service; After the authentication and registration process, the home subscriber server records the IP address assigned by the access point corresponding to each service to the user equipment, and marks that the user equipment has registered the multiple services.
  • the activation request is a PDP activation request or a DHCP activation request
  • the identity of the user equipment includes: an IP multimedia private identifier of the user equipment and an IP multimedia public identity.
  • the multiple services include: a VoLTE service and an RCS service; the access point corresponding to the VoLTE service is an IMS APN, and the RCS service pair The access point is the NET APN; the access point corresponding to the specified service is the IMS APN.
  • the service quality of the VoLTE service is generally required to be high. Therefore, in order to ensure the quality of service of the VoLTE service, the access point corresponding to the VoLTE service can be set to be an IMS APN, and the user equipment needs to process the VoLTE service and the RCS service. At this time, the IMS initial registration process can be performed through the IMS APN. Of course, in other embodiments of the invention, the IMS initial registration process may also be performed via the NET APN.
  • FIG. 2 shows a schematic block diagram of a multi-service based IMS registration system in accordance with an embodiment of the present invention.
  • the multi-service based IMS registration system 200 includes a request transmitting unit 202, a receiving unit 204, a selecting unit 206, and a registration unit 208.
  • the request sending unit 202 is configured to send an activation request and a CSCF discovery request to the access point corresponding to the multiple services when the user equipment needs to process multiple services based on the IMS service, and the receiving unit 204 is configured to receive The access point corresponding to each of the multiple services is allocated to the IP address of the user equipment, and receives the P-CSCF discovery list fed back by the access point corresponding to each service; the selecting unit 206 is configured to: Selecting, from the P-CSCF discovery list allocated by the access point corresponding to the multiple services, a P-CSCF having the same network address, and a registration unit 208, configured to allocate to the access point corresponding to each service The IP address of the user equipment and the identity of the user equipment send an IMS registration request to the P-CSCF, and perform an IMS initial registration process by using an access point corresponding to the specified service in the multiple services.
  • the user equipment when the user equipment obtains the IP address assigned by the access point corresponding to each service of the multiple services and the feedback P-CSCF discovery list, by selecting the P-CSCF having the same network address, And sending an IMS registration request to the P-CSCF based on the IP address assigned by the access point corresponding to each service and the identity of the user equipment, and performing an IMS initial registration process by using the access point corresponding to the specified service, so that the user equipment needs to be processed based on
  • the access of multiple services can be completed through one registration process, thereby greatly reducing the overhead of network signaling, reducing the delay of network access, and effectively improving the user experience.
  • the performing the IMS initial registration process by the registration unit 208 specifically includes: the user equipment sending an initial registration request to the P-CSCF, where the initial registration request includes the foregoing Assigned to the user equipment by the corresponding access point of each service An IP address and an identity of the user equipment; the P-CSCF routes the initial registration request to the I-CSCF according to the home network domain name in the initial registration request, for the I-CSCF to query the home subscription a user server and selecting an S-CSCF; the I-CSCF sends the initial registration request to the S-CSCF; the S-CSCF according to the identity identifier of the user equipment included in the initial registration request, The home subscription subscriber server requests to download a user authentication vector; the home subscription subscriber server generates the user authentication vector according to the identity identifier of the user equipment, and feeds back to the S-CSCF; the S-CSCF After receiving the user authentication vector, the I-CSCF and the P-CSCF return an authentication challenge to the user equipment.
  • the registration unit 208 is further configured to: after receiving the authentication challenge, the user equipment performs an authentication registration process by using an access point corresponding to the designated service; After the user equipment completes the authentication registration process, the home subscriber server records an IP address assigned by the access point corresponding to each service to the user equipment, and marks that the user equipment has been marked. Register the multiple businesses.
  • the activation request is a PDP activation request or a DHCP activation request
  • the identity identifier of the user equipment includes: an IP multimedia private identifier of the user equipment and an IP multimedia public identifier.
  • the multiple services include: a VoLTE service and an RCS service; the access point corresponding to the VoLTE service is an IMS APN, and the access point corresponding to the RCS service is a NET APN; The access point corresponding to the specified service is the IMS APN.
  • the service quality of the VoLTE service is generally required to be high. Therefore, in order to ensure the quality of service of the VoLTE service, the access point corresponding to the VoLTE service can be set to be an IMS APN, and the user equipment needs to process the VoLTE service and the RCS service. At this time, the IMS initial registration process can be performed through the IMS APN. Of course, in other embodiments of the invention, the IMS initial registration process may also be performed via the NET APN.
  • the terminal needs to process the VoLTE service and the RCS service, and the terminal accesses the RCS service through the NET APN (such as the Cmnet APN) and the registration to the VoLTE service through the IMS APN access.
  • the terminal completes the registration process through the IMS AKA algorithm.
  • the technical solution of this embodiment is mainly that the terminal completes two APN PDPs (corresponding to After the VoLTE service and the RCS service are activated, the discovery process of the respective P-CSCF is performed, so that it generates two P-CSCF discovery lists, and then selects the same P-CSCF address from the two discovery lists and passes the IMS.
  • - APN for access and registration.
  • the registration request is required to carry the IP address assigned by the terminal when the two PDPs are activated, and the service type corresponding to each IP address (ie, the RCS service or the VoLTE service) is marked, and then the terminal is registered by the single registration method.
  • To RCS converged communications and VoLTE services.
  • Step 302 The UE (User Equipment) performs PDP activation by using two APNs respectively. After the activation succeeds, the network side returns the IP address of the UE and the discovery list of the P-CSCF (here, the PDP activation process completes the discovery of the P-CSCF. For example, the discovery process of the P-CSCF can be completed through DHCP. Therefore, the terminal will have two IP addresses, which correspond to the IP address of the RCS service and the IP address of the VoLTE service. A list of addresses for P-CSCF.
  • step 304 the UE selects the same P-CSCF address from the two P-CSCF lists as the entry for the single registration access.
  • Step 306 The UE sends a registration request to the selected P-CSCF.
  • the registration request carries information such as IMPI, IMPU, UE-IP (RCS), and UE-IP (VoLTE). It should be noted that in order to ensure the quality of service of the VoLTE service, a registration request may be sent to the selected P-CSCF on the IMS-APN link.
  • Step 308 The P-CSCF routes the registration request to the I-CSCF according to the home network domain name (configured on the UE side) in the registration request.
  • Step 310 The I-CSCF queries the HSS by using the UAR message; the HSS returns the S-CSCF capability set required by the user by using the UAA message, so that the I-CSCF selects the S-CSCF.
  • the I-CSCF selects an appropriate S-CSCF according to the subscription requirement of the user, and sends a registration request to the S-CSCF.
  • Step 314 After receiving the request, the S-CSCF requests the home subscriber server HSS to download the user authentication vector according to the IMPI message included in the registration request.
  • the home subscription subscriber server HSS detects and downloads the user according to the IMPI.
  • the authentication vector is then fed back to the S-CSCF by the MAA message.
  • Step 316 After receiving the user authentication vector, the S-CSCF sends an 401 unauthorized response and carries the authentication verification parameter to send an authentication challenge to the I-CSCF.
  • step 318 the I-CSCF sends a 401 Unauthorized Response and Authentication Challenge to the P-CSCF.
  • step 320 the P-CSCF feeds back the 401 unauthorised response and the authentication challenge to the UE.
  • Step 322 The UE performs an authentication registration process based on the received authentication challenge, and the process is consistent with the existing authentication registration process, and details are not described herein again.
  • Step 324 after the IMS authentication registration is successful, registration and registration are performed on the RCS converged communication service platform.
  • Step 326 after the IMS authentication registration is successful, the RCS and VoLTE that mark the UE in the HSS are registered, and the corresponding IP address is saved.
  • the technical solution of the present invention is mainly to select the same P-CSCF address in the P-CSCF discovery list of two APN bearers to initiate IMS registration, and complete the registration process through the IMS APN access, where the IMS registration request
  • the dual-IP address of the UE and the service type corresponding to each IP are carried, so that the RCS converged communication and the VoLTE service are accessed through the IMS-APN single registration.
  • the present invention proposes a new multi-service based IMS registration scheme, which enables a user equipment to complete a registration process when it needs to process multiple services based on the IMS service.
  • the access of multiple services can greatly reduce the overhead of network signaling, reduce the delay of network access, and effectively improve the user experience.

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Abstract

本发明提供了一种基于多业务的IMS注册方法和IMS注册系统，其中，基于多业务的IMS注册方法，包括：用户设备在需要处理基于IMS服务的多个业务时，分别向多个业务对应的接入点发送激活请求和CSCF发现请求；接收每个业务对应的接入点分配给所述用户设备的IP地址，并接收所述每个业务对应的接入点反馈的P-CSCF发现列表；从所述多个业务对应的接入点分配的P-CSCF发现列表中选择出具有相同网络地址的P-CSCF；基于所述每个业务对应的接入点分配给用户设备的IP地址和用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程。本发明的技术方案可以大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。

Description

基于多业务的IMS注册方法和IMS注册系统
本申请要求于2015年11月30日提交中国专利局，申请号为201510863630.6、发明名称为“基于多业务的IMS注册方法和IMS注册系统”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，具体而言，涉及一种基于多业务的IMS注册方法和一种基于多业务的IMS注册系统。
背景技术
IMS(Internet Protocol Multimedia Subsystem，网际协议多媒体子系统)是一种全新的多媒体业务形式，可以应用于移动通信网及固定通信网，能够满足终端客户更新颖、更多样化多媒体的业务需求。
通常，用户在使用IMS服务之前必须向IMS网络进行注册，通过注册过程可以完成用户对网络和网络对用户的双向认证。IMS注册包含两次注册，分别是初始注册和鉴权注册。初始注册过程是由用户设备(User Equipment，UE)发起，向IMS网络进行注册的过程，由于此时还没有进行身份认证，所以网络会发送未授权响应并携带鉴权验证参数(RAND，AUTH)向用户设备发起鉴权挑战，用户设备收到后会进行鉴权响应参数的计算，之后会发起鉴权注册流程；鉴权注册流程是用户设备将挑战响应值发送给网络，由网络完成鉴权及密钥协商的过程。
现有支持VoLTE(Voice over LTE(Long Term Evolution，长期演进)，基于LTE的语音业务)和RCS(Rich Communication Services，融合通信服务)的移动终端通常需要双注册才能完成整个业务的注册过程，双注册是指终端通过两个IMS注册，分别接入到RCS融合通信服务和VoLTE服务。而这两个IMS注册时的IMPI(IP Multimedia Private Identity，IP多媒体私有标识)、IMPU(IP Multimedia Public Identity，IP多媒体公共标识)以及密钥源都是相同的，不同之处在于其通过不同的APN(Access Point Name，接入点名称)接入网络。具体地，RCS通过PS(Packet Switch，分组交换) 域NET APN接入(如CMNET APN)，VoLTE为了保证QoS(Quality of Service，服务质量)，通过专门的IMS APN接入。
可见，现有的移动终端在需要处理基于IMS服务的多个业务时，往往需要通过多次IMS注册过程，信令负荷较大，网络接入时间较长，导致用户的体验较差。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的基于多业务的IMS注册方案，可以大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。
有鉴于此，本发明提出了一种基于多业务的IMS注册方法，包括：用户设备在需要处理基于IMS服务的多个业务时，分别向所述多个业务对应的接入点发送激活请求和CSCF(Call Session Control Function，呼叫会话控制功能)发现请求；接收所述多个业务中每个业务对应的接入点分配给所述用户设备的IP地址，并接收所述每个业务对应的接入点反馈的P-CSCF(Proxy Call Session Control Function，代理呼叫会话控制功能)发现列表；从所述多个业务对应的接入点分配的P-CSCF发现列表中选择出具有相同网络地址的P-CSCF；基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程。
在该技术方案中，当用户设备在获取到多个业务中每个业务对应的接入点分配的IP地址和反馈的P-CSCF发现列表时，通过选择出具有相同网络地址的P-CSCF，并基于每个业务对应的接入点分配的IP地址和用户设备的身份标识向P-CSCF发送IMS注册请求，通过指定业务对应的接入点执行IMS初始注册过程，使得用户设备在需要处理基于IMS服务的多个业务时，能够通过一次注册过程完成多个业务的接入，进而能够大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。
在上述技术方案中，优选地，基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送 IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程的步骤，具体包括：
所述用户设备向所述P-CSCF发送初始注册请求，所述初始注册请求中包含有所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识；所述P-CSCF根据所述初始注册请求中的归属网络域名，将所述初始注册请求路由至I-CSCF(Interrogation Call Session Control Function，查询呼叫会话控制功能)，以供所述I-CSCF查询归属签约用户服务器(即HSS)并选择S-CSCF(Serving Call Session ControlFunction，服务呼叫会话控制功能)；所述I-CSCF将所述初始注册请求发送至所述S-CSCF；所述S-CSCF根据所述初始注册请求中包含的所述用户设备的身份标识，向所述归属签约用户服务器请求下载用户鉴权向量；所述归属签约用户服务器根据所述用户设备的身份标识，生成所述用户鉴权向量，并反馈至所述S-CSCF；所述S-CSCF在接收到所述用户鉴权向量后，通过所述I-CSCF和所述P-CSCF向所述用户设备返回鉴权挑战。
此外，为了能够表示用户设备的IP地址与每个业务的关系，可以在初始注册请求中说明IP地址所对应的业务；当然，若每个业务对应的接入点分配给用户设备的IP地址已经能够表明IP地址与业务的对应关系，则在初始注册请求中也可以不增加相应的说明。
在上述任一技术方案中，优选地，还包括：所述用户设备在接收到所述鉴权挑战后，通过所述指定业务对应的接入点执行鉴权注册过程；在所述用户设备完成所述鉴权注册过程之后，所述归属签约用户服务器记录所述每个业务对应的接入点向所述用户设备分配的IP地址，并标记所述用户设备已注册所述多个业务。
在上述任一技术方案中，优选地，所述激活请求是PDP(Packet Data Protocol，分组数据协议)激活请求或DHCP(Dynamic Host Configuration Protocol，动态主机配置协议)激活请求；
所述用户设备的身份标识包括：所述用户设备的IP多媒体私有标识和IP多媒体公共标识。
在上述任一技术方案中，优选地，所述多个业务包括：VoLTE业务和 RCS业务；所述VoLTE业务对应的接入点为IMS APN，所述RCS业务对应的接入点为NET APN；所述指定业务对应的接入点为所述IMS APN。
在该技术方案中，由于VoLTE业务的服务质量通常要求较高，因此为了保证VoLTE业务的服务质量，可以设置VoLTE业务对应的接入点为IMS APN，并且在用户设备需要处理VoLTE业务和RCS业务时，可以选择通过IMS APN来执行IMS初始注册过程。当然，在本发明的其它实施例中，也可以选择通过NET APN来执行IMS初始注册过程。
根据本发明的另一方面，还提出了一种基于多业务的IMS注册系统，包括：请求发送单元，用于在用户设备需要处理基于IMS服务的多个业务时，分别向所述多个业务对应的接入点发送激活请求和CSCF发现请求；接收单元，用于接收所述多个业务中每个业务对应的接入点分配给所述用户设备的IP地址，并接收所述每个业务对应的接入点反馈的P-CSCF发现列表；选择单元，用于从所述多个业务对应的接入点分配的P-CSCF发现列表中选择出具有相同网络地址的P-CSCF；注册单元，用于基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程。
在该技术方案中，当用户设备在获取到多个业务中每个业务对应的接入点分配的IP地址和反馈的P-CSCF发现列表时，通过选择出具有相同网络地址的P-CSCF，并基于每个业务对应的接入点分配的IP地址和用户设备的身份标识向P-CSCF发送IMS注册请求，通过指定业务对应的接入点执行IMS初始注册过程，使得用户设备在需要处理基于IMS服务的多个业务时，能够通过一次注册过程完成多个业务的接入，进而能够大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。
在上述技术方案中，优选地，所述注册单元执行所述IMS初始注册过程具体包括：所述用户设备向所述P-CSCF发送初始注册请求，所述初始注册请求中包含有所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识；所述P-CSCF根据所述初始注册请求中的归属网络域名，将所述初始注册请求路由至I-CSCF，以供所述I-CSCF查 询归属签约用户服务器并选择S-CSCF；所述I-CSCF将所述初始注册请求发送至所述S-CSCF；所述S-CSCF根据所述初始注册请求中包含的所述用户设备的身份标识，向所述归属签约用户服务器请求下载用户鉴权向量；所述归属签约用户服务器根据所述用户设备的身份标识，生成所述用户鉴权向量，并反馈至所述S-CSCF；所述S-CSCF在接收到所述用户鉴权向量后，通过所述I-CSCF和所述P-CSCF向所述用户设备返回鉴权挑战。
在上述任一技术方案中，优选地，所述注册单元还用于：所述用户设备在接收到所述鉴权挑战后，通过所述指定业务对应的接入点执行鉴权注册过程；其中，在所述用户设备完成所述鉴权注册过程之后，所述归属签约用户服务器记录所述每个业务对应的接入点向所述用户设备分配的IP地址，并标记所述用户设备已注册所述多个业务。
在上述任一技术方案中，优选地，所述激活请求是PDP激活请求或DHCP激活请求；所述用户设备的身份标识包括：所述用户设备的IP多媒体私有标识和IP多媒体公共标识。
在上述任一技术方案中，优选地，所述多个业务包括：VoLTE业务和RCS业务；所述VoLTE业务对应的接入点为IMS APN，所述RCS业务对应的接入点为NET APN；所述指定业务对应的接入点为所述IMS APN。
在该技术方案中，由于VoLTE业务的服务质量通常要求较高，因此为了保证VoLTE业务的服务质量，可以设置VoLTE业务对应的接入点为IMS APN，并且在用户设备需要处理VoLTE业务和RCS业务时，可以选择通过IMS APN来执行IMS初始注册过程。当然，在本发明的其它实施例中，也可以选择通过NET APN来执行IMS初始注册过程。
通过以上技术方案，使得用户设备在需要处理基于IMS服务的多个业务时，能够通过一次注册过程完成多个业务的接入，进而能够大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。
附图说明
图1示出了根据本发明的实施例的基于多业务的IMS注册方法的示意流程图；
图2示出了根据本发明的实施例的基于多业务的IMS注册系统的示意框图；
图3示出了根据本发明的一个实施例的VoLTE和RCS单注册过程示意图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
图1示出了根据本发明的实施例的基于多业务的IMS注册方法的示意流程图。
如图1所示，根据本发明的实施例的基于多业务的IMS注册方法，包括：
步骤102，用户设备在需要处理基于IMS服务的多个业务时，分别向所述多个业务对应的接入点发送激活请求和CSCF发现请求；
步骤104，接收所述多个业务中每个业务对应的接入点分配给所述用户设备的IP地址，并接收所述每个业务对应的接入点反馈的P-CSCF发现列表；
步骤106，从所述多个业务对应的接入点分配的P-CSCF发现列表中选择出具有相同网络地址的P-CSCF；
步骤108，基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程。
在该技术方案中，当用户设备在获取到多个业务中每个业务对应的接入点分配的IP地址和反馈的P-CSCF发现列表时，通过选择出具有相同网络地址的P-CSCF，并基于每个业务对应的接入点分配的IP地址和用户设 备的身份标识向P-CSCF发送IMS注册请求，通过指定业务对应的接入点执行IMS初始注册过程，使得用户设备在需要处理基于IMS服务的多个业务时，能够通过一次注册过程完成多个业务的接入，进而能够大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。
在上述技术方案中，优选地，基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程的步骤，具体包括：
所述用户设备向所述P-CSCF发送初始注册请求，所述初始注册请求中包含有所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识；所述P-CSCF根据所述初始注册请求中的归属网络域名，将所述初始注册请求路由至I-CSCF，以供所述I-CSCF查询归属签约用户服务器并选择S-CSCF；所述I-CSCF将所述初始注册请求发送至所述S-CSCF；所述S-CSCF根据所述初始注册请求中包含的所述用户设备的身份标识，向所述归属签约用户服务器请求下载用户鉴权向量；所述归属签约用户服务器根据所述用户设备的身份标识，生成所述用户鉴权向量，并反馈至所述S-CSCF；所述S-CSCF在接收到所述用户鉴权向量后，通过所述I-CSCF和所述P-CSCF向所述用户设备返回鉴权挑战。
在上述任一技术方案中，优选地，还包括：所述用户设备在接收到所述鉴权挑战后，通过所述指定业务对应的接入点执行鉴权注册过程；在所述用户设备完成所述鉴权注册过程之后，所述归属签约用户服务器记录所述每个业务对应的接入点向所述用户设备分配的IP地址，并标记所述用户设备已注册所述多个业务。
在上述任一技术方案中，优选地，所述激活请求是PDP激活请求或DHCP激活请求；
所述用户设备的身份标识包括：所述用户设备的IP多媒体私有标识和IP多媒体公共标识。
在上述任一技术方案中，优选地，所述多个业务包括：VoLTE业务和RCS业务；所述VoLTE业务对应的接入点为IMS APN，所述RCS业务对 应的接入点为NET APN；所述指定业务对应的接入点为所述IMS APN。
在该技术方案中，由于VoLTE业务的服务质量通常要求较高，因此为了保证VoLTE业务的服务质量，可以设置VoLTE业务对应的接入点为IMS APN，并且在用户设备需要处理VoLTE业务和RCS业务时，可以选择通过IMS APN来执行IMS初始注册过程。当然，在本发明的其它实施例中，也可以选择通过NET APN来执行IMS初始注册过程。
图2示出了根据本发明的实施例的基于多业务的IMS注册系统的示意框图。
如图2所示，根据本发明的实施例的基于多业务的IMS注册系统200，包括：请求发送单元202、接收单元204、选择单元206和注册单元208。
其中，请求发送单元202，用于在用户设备需要处理基于IMS服务的多个业务时，分别向所述多个业务对应的接入点发送激活请求和CSCF发现请求；接收单元204，用于接收所述多个业务中每个业务对应的接入点分配给所述用户设备的IP地址，并接收所述每个业务对应的接入点反馈的P-CSCF发现列表；选择单元206，用于从所述多个业务对应的接入点分配的P-CSCF发现列表中选择出具有相同网络地址的P-CSCF；注册单元208，用于基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程。
在该技术方案中，当用户设备在获取到多个业务中每个业务对应的接入点分配的IP地址和反馈的P-CSCF发现列表时，通过选择出具有相同网络地址的P-CSCF，并基于每个业务对应的接入点分配的IP地址和用户设备的身份标识向P-CSCF发送IMS注册请求，通过指定业务对应的接入点执行IMS初始注册过程，使得用户设备在需要处理基于IMS服务的多个业务时，能够通过一次注册过程完成多个业务的接入，进而能够大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。
在上述技术方案中，优选地，所述注册单元208执行所述IMS初始注册过程具体包括：所述用户设备向所述P-CSCF发送初始注册请求，所述初始注册请求中包含有所述每个业务对应的接入点分配给所述用户设备的 IP地址和所述用户设备的身份标识；所述P-CSCF根据所述初始注册请求中的归属网络域名，将所述初始注册请求路由至I-CSCF，以供所述I-CSCF查询归属签约用户服务器并选择S-CSCF；所述I-CSCF将所述初始注册请求发送至所述S-CSCF；所述S-CSCF根据所述初始注册请求中包含的所述用户设备的身份标识，向所述归属签约用户服务器请求下载用户鉴权向量；所述归属签约用户服务器根据所述用户设备的身份标识，生成所述用户鉴权向量，并反馈至所述S-CSCF；所述S-CSCF在接收到所述用户鉴权向量后，通过所述I-CSCF和所述P-CSCF向所述用户设备返回鉴权挑战。
在上述任一技术方案中，优选地，所述注册单元208还用于：所述用户设备在接收到所述鉴权挑战后，通过所述指定业务对应的接入点执行鉴权注册过程；其中，在所述用户设备完成所述鉴权注册过程之后，所述归属签约用户服务器记录所述每个业务对应的接入点向所述用户设备分配的IP地址，并标记所述用户设备已注册所述多个业务。
在上述任一技术方案中，优选地，所述激活请求是PDP激活请求或DHCP激活请求；所述用户设备的身份标识包括：所述用户设备的IP多媒体私有标识和IP多媒体公共标识。
在上述任一技术方案中，优选地，所述多个业务包括：VoLTE业务和RCS业务；所述VoLTE业务对应的接入点为IMS APN，所述RCS业务对应的接入点为NET APN；所述指定业务对应的接入点为所述IMS APN。
在该技术方案中，由于VoLTE业务的服务质量通常要求较高，因此为了保证VoLTE业务的服务质量，可以设置VoLTE业务对应的接入点为IMS APN，并且在用户设备需要处理VoLTE业务和RCS业务时，可以选择通过IMS APN来执行IMS初始注册过程。当然，在本发明的其它实施例中，也可以选择通过NET APN来执行IMS初始注册过程。
以下结合图3以终端需要处理VoLTE业务和RCS业务、且终端通过NET APN(如Cmnet APN)接入注册到RCS服务，通过IMS APN接入注册到VoLTE服务为例详细说明本发明的技术方案。其中，终端通过IMS AKA算法完成注册过程。
该实施例的技术方案主要是终端在完成两路APN PDP(分别对应于 VoLTE服务和RCS服务)激活后，执行各自的P-CSCF的发现过程，这样其会产生两个P-CSCF发现列表，然后从这两个发现列表中选择相同的P-CSCF地址，并通过IMS-APN进行接入和注册。其中注册请求中需要携带终端的两路PDP激活时分配的IP地址，并标注每个IP地址对应注册的服务类型(即RCS服务或者VoLTE服务)，进而以此通过单注册方式将终端接入注册到RCS融合通信和VoLTE服务中。
具体过程如图3所示，包括：
步骤302，UE(User Equipment，用户设备)通过两个APN分别进行PDP激活，激活成功后网络侧会返回UE的IP地址和P-CSCF的发现列表(这里以PDP激活过程完成P-CSCF的发现为例来描述，当然也可以通过DHCP方式完成发现P-CSCF的发现过程)，这样终端就会存在两个IP地址，分别对应RCS服务的IP地址和VoLTE服务的IP地址，当然也会有两个P-CSCF的地址列表。
步骤304，UE从两个P-CSCF列表中选择相同的P-CSCF地址作为单注册访问的入口。
步骤306，UE向选择出的P-CSCF发送注册请求。其中，注册请求中携带有IMPI、IMPU、UE-IP(RCS)、UE-IP(VoLTE)等信息。需要注意的是，为了保证VoLTE业务的服务质量，可以在IMS-APN链路上向选择出的P-CSCF发送注册请求。
步骤308，P-CSCF根据注册请求中的归属网络域名(在UE侧配置)，将注册请求路由到I-CSCF。
步骤310，I-CSCF使用UAR消息查询HSS；HSS用UAA消息返回用户需求的S-CSCF能力集，以供I-CSCF选择S-CSCF。
步骤312，I-CSCF根据用户的签约需求选择合适的S-CSCF，将注册请求发往S-CSCF。
步骤314，当S-CSCF接收到该请求后，S-CSCF根据注册请求中包含的IMPI用MAR消息向归属签约用户服务器HSS请求下载用户鉴权向量；归属签约用户服务器HSS根据IMPI检测并下载用户鉴权向量，然后通过MAA消息将用户鉴权向量反馈至S-CSCF。
步骤316，S-CSCF在接收到用户鉴权向量后，发送401未授权响应并携带鉴权验证参数向I-CSCF发送鉴权挑战。
步骤318，I-CSCF将401未授权响应和鉴权挑战发送至P-CSCF。
步骤320，P-CSCF将401未授权响应和鉴权挑战反馈至UE。
步骤322，UE基于接收到的鉴权挑战执行鉴权注册过程，该过程与现有的鉴权注册过程一致，在此不再赘述。
步骤324，IMS鉴权注册成功后在RCS融合通信服务平台进行注册和登记。
步骤326，IMS鉴权注册成功后，在HSS中标记UE的RCS和VoLTE已注册，并保存对应的IP地址。
综上所述，本发明的技术方案主要是在两个APN承载的P-CSCF发现列表中选择相同的P-CSCF地址发起IMS注册，并通过IMS APN接入完成注册的过程，其中IMS注册请求携带UE的双IP地址及各IP对应的服务类型，以此通过IMS-APN单注册完成RCS融合通信和VoLTE服务的接入。
以上结合附图详细说明了本发明的技术方案，本发明提出了一种新的基于多业务的IMS注册方案，使得用户设备在需要处理基于IMS服务的多个业务时，能够通过一次注册过程完成多个业务的接入，进而能够大大减少网络信令的开销，降低了网络接入的延时，有效提高了用户的体验。
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 (10)

  1. 一种基于多业务的IMS注册方法，其特征在于，包括：
    用户设备在需要处理基于IMS服务的多个业务时，分别向所述多个业务对应的接入点发送激活请求和CSCF发现请求；
    接收所述多个业务中每个业务对应的接入点分配给所述用户设备的IP地址，并接收所述每个业务对应的接入点反馈的P-CSCF发现列表；
    从所述多个业务对应的接入点分配的P-CSCF发现列表中选择出具有相同网络地址的P-CSCF；
    基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程。
  2. 根据权利要求1所述的基于多业务的IMS注册方法，其特征在于，基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程的步骤，具体包括：
    所述用户设备向所述P-CSCF发送初始注册请求，所述初始注册请求中包含有所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识；
    所述P-CSCF根据所述初始注册请求中的归属网络域名，将所述初始注册请求路由至I-CSCF，以供所述I-CSCF查询归属签约用户服务器并选择S-CSCF；
    所述I-CSCF将所述初始注册请求发送至所述S-CSCF；
    所述S-CSCF根据所述初始注册请求中包含的所述用户设备的身份标识，向所述归属签约用户服务器请求下载用户鉴权向量；
    所述归属签约用户服务器根据所述用户设备的身份标识，生成所述用户鉴权向量，并反馈至所述S-CSCF；
    所述S-CSCF在接收到所述用户鉴权向量后，通过所述I-CSCF和所述P-CSCF向所述用户设备返回鉴权挑战。
  3. 根据权利要求2所述的基于多业务的IMS注册方法，其特征在于，还包括：
    所述用户设备在接收到所述鉴权挑战后，通过所述指定业务对应的接入点执行鉴权注册过程；
    在所述用户设备完成所述鉴权注册过程之后，所述归属签约用户服务器记录所述每个业务对应的接入点向所述用户设备分配的IP地址，并标记所述用户设备已注册所述多个业务。
  4. 根据权利要求1所述的基于多业务的IMS注册方法，其特征在于，所述激活请求是PDP激活请求或DHCP激活请求；
    所述用户设备的身份标识包括：所述用户设备的IP多媒体私有标识和IP多媒体公共标识。
  5. 根据权利要求1至4中任一项所述的基于多业务的IMS注册方法，其特征在于，所述多个业务包括：VoLTE业务和RCS业务；
    所述VoLTE业务对应的接入点为IMS APN，所述RCS业务对应的接入点为NET APN；
    所述指定业务对应的接入点为所述IMS APN。
  6. 一种基于多业务的IMS注册系统，其特征在于，包括：
    请求发送单元，用于在用户设备需要处理基于IMS服务的多个业务时，分别向所述多个业务对应的接入点发送激活请求和CSCF发现请求；
    接收单元，用于接收所述多个业务中每个业务对应的接入点分配给所述用户设备的IP地址，并接收所述每个业务对应的接入点反馈的P-CSCF发现列表；
    选择单元，用于从所述多个业务对应的接入点分配的P-CSCF发现列表中选择出具有相同网络地址的P-CSCF；
    注册单元，用于基于所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识向所述P-CSCF发送IMS注册请求，并通过所述多个业务中指定业务对应的接入点执行IMS初始注册过程。
  7. 根据权利要求6所述的基于多业务的IMS注册系统，其特征在于，所述注册单元执行所述IMS初始注册过程具体包括：
    所述用户设备向所述P-CSCF发送初始注册请求，所述初始注册请求中包含有所述每个业务对应的接入点分配给所述用户设备的IP地址和所述用户设备的身份标识；
    所述P-CSCF根据所述初始注册请求中的归属网络域名，将所述初始注册请求路由至I-CSCF，以供所述I-CSCF查询归属签约用户服务器并选择S-CSCF；
    所述I-CSCF将所述初始注册请求发送至所述S-CSCF；
    所述S-CSCF根据所述初始注册请求中包含的所述用户设备的身份标识，向所述归属签约用户服务器请求下载用户鉴权向量；
    所述归属签约用户服务器根据所述用户设备的身份标识，生成所述用户鉴权向量，并反馈至所述S-CSCF；
    所述S-CSCF在接收到所述用户鉴权向量后，通过所述I-CSCF和所述P-CSCF向所述用户设备返回鉴权挑战。
  8. 根据权利要求7所述的基于多业务的IMS注册系统，其特征在于，所述注册单元还用于：所述用户设备在接收到所述鉴权挑战后，通过所述指定业务对应的接入点执行鉴权注册过程；
    其中，在所述用户设备完成所述鉴权注册过程之后，所述归属签约用户服务器记录所述每个业务对应的接入点向所述用户设备分配的IP地址，并标记所述用户设备已注册所述多个业务。
  9. 根据权利要求6所述的基于多业务的IMS注册系统，其特征在于，所述激活请求是PDP激活请求或DHCP激活请求；
    所述用户设备的身份标识包括：所述用户设备的IP多媒体私有标识和IP多媒体公共标识。
  10. 根据权利要求6至9中任一项所述的基于多业务的IMS注册系统，其特征在于，所述多个业务包括：VoLTE业务和RCS业务；
    所述VoLTE业务对应的接入点为IMS APN，所述RCS业务对应的接入点为NET APN；
    所述指定业务对应的接入点为所述IMS APN。
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