WO2011023023A1 - Ip多媒体子系统呼叫处理方法及装置 - Google Patents

Ip多媒体子系统呼叫处理方法及装置 Download PDF

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Publication number
WO2011023023A1
WO2011023023A1 PCT/CN2010/074000 CN2010074000W WO2011023023A1 WO 2011023023 A1 WO2011023023 A1 WO 2011023023A1 CN 2010074000 W CN2010074000 W CN 2010074000W WO 2011023023 A1 WO2011023023 A1 WO 2011023023A1
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Prior art keywords
header
message
call
calling
module
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PCT/CN2010/074000
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English (en)
French (fr)
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张崇正
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中兴通讯股份有限公司
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Publication of WO2011023023A1 publication Critical patent/WO2011023023A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1069Session establishment or de-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1096Supplementary features, e.g. call forwarding or call holding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1101Session protocols
    • H04L65/1104Session initiation protocol [SIP]

Definitions

  • the present invention relates to the field of multimedia technologies, and in particular, to an IP multimedia subsystem (IMS) call processing method and apparatus.
  • IMS IP multimedia subsystem
  • PSTN Public Switched Telephone Network
  • IMS is a subsystem supporting the IP multimedia service proposed by the 3rd Generation Partnership Project (3GPP). It can provide a variety of media services, conforming to the general trend of communication network convergence, and will gradually become the next generation.
  • 3GPP 3rd Generation Partnership Project
  • NTN Next Generation Network
  • the P-CSCF is an ingress node that connects the User Equipment (UE) and the IMS network. All session messages initiated and terminated by the IMS terminal through the IMS terminal pass through the P-CSCF.
  • the P-CSCF actually acts as a proxy server that receives Session Initiation Protocol (SIP) requests and responses and forwards them to the IMS network or users.
  • SIP Session Initiation Protocol
  • the P-CSCF can be located on the visited network or the home network.
  • the Application Server (AS) is located in the home network and is used to provide service logic to support various service attributes of users.
  • the P-Asserted-Identity header can be used to characterize the identity of the SIP message sender in the trust domain.
  • the value of the Privacy header is "id"
  • the proxy server deletes the P-Asserted-Identity header in the corresponding message.
  • the called party B when the calling user A signs the calling number to display the restricted service, or when the called user B does not sign the calling number to display the service, the called party B is located at the P-CSCF where the called user B is located.
  • the value of the Privacy header in the (INVITE) message is "id", as shown in Figure 1 and Figure 2.
  • the P-CSCF needs to delete the P-Asserted-Identity (referred to as PAI in Figure 3) header of the INVITE message, indicating that the called user B should not see the number of the calling user A.
  • PAI P-Asserted-Identity
  • the types of services that can be provided are not rich, and only the number of the calling user can reflect the information of the calling user.
  • the user should also not see the information of the calling user's color image and the like that can reflect the identity of the calling user.
  • the server through which the request message passes cannot add any header indicating the identity of the calling user to the message. , including the Calllnfo header that characterizes the caller's color image information, as shown in FIG.
  • RFC-3323 the processing of RFC-3323 is still flawed.
  • the header characterizing the identity information of the calling party such as color image information, etc.
  • the IMS-independent feature any intelligent terminal or non-intelligent terminal can access the IMS network through the corresponding access network to enjoy multimedia services, and for non-intelligent terminals that cannot flexibly modify the Privacy field. , and will still result in the disclosure of the identity of the calling user in the anonymous call.
  • the present invention has been made in view of the problem that a user identity may be leaked in an anonymous call in the prior art. Therefore, the main object of the present invention is to provide an IP multimedia subsystem call processing method and apparatus to solve the prior art. The above problem.
  • an IP multimedia subsystem call processing method includes: receiving, by the P-CSCF of the visited network, a call message; when the Privacy header in the originating message is assigned a header, the P-CSCF deletes the header of the originating message that includes the identity information of the calling user equipment.
  • deleting the header of the caller message including the identity information of the calling user equipment further comprises: deleting the P-Asserted-Identity header and the CallInfo header in the originating message.
  • the method further includes: the calling user equipment initiates a call to the called user equipment, and the calling user equipment signs the calling information to display the restricted service; the home network AS will initiate the call.
  • the Privacy header in the message is assigned the header.
  • the method further includes: the calling user equipment initiates a call to the called user equipment, and the called user equipment does not sign the calling information display service; the visited network AS will initiate a call
  • the Privacy header in the message is assigned the header.
  • a processing apparatus for an IP multimedia subsystem call includes: a receiving module, configured to receive a call message; a determining module, configured to determine whether a Privacy header value in the originating message is a header; and a deleting module, configured to delete when the determining result of the determining module is yes
  • the originating message contains the header of the identity information of the calling user equipment.
  • the deleting module further comprises: a first deleting module, configured to delete a P-Asserted-Identity header in the originating message; and a second deleting module, configured to delete the Calllnfo header in the originating message.
  • the apparatus further includes: a first evaluation module, configured to assign a Privacy header in the originating message to the header when the calling user equipment signs the calling information to display the restricted service.
  • a first evaluation module configured to assign a Privacy header in the originating message to the header when the calling user equipment signs the calling information to display the restricted service.
  • the apparatus further includes: a second evaluation module, configured to assign the Privacy header in the originating message to the header when the called user equipment does not sign the calling information display service.
  • a second evaluation module configured to assign the Privacy header in the originating message to the header when the called user equipment does not sign the calling information display service.
  • the calling header of the calling message is deleted by the visited network P-CSCF, and the header of the calling message containing the identity of the calling user equipment is deleted, which may result in the disclosure of the calling party.
  • the header information of the user identity realizes the anonymous call in the true sense and increases the user experience.
  • FIG. 2 is a flow chart of another processing manner of an anonymous call according to the prior art
  • FIG. 3 is a schematic diagram of a P-CSCF processing INVITE message of an anonymous call according to the prior art
  • FIG. 4 is a flow chart of a solution of an RFC-3323 for an anonymous call according to the prior art
  • FIG. 5 is a flowchart of a method for processing an IMS call according to an embodiment of the present invention
  • FIG. 6 is a first embodiment of a method according to the present invention.
  • Figure 7 is a flow chart of a second embodiment of the method according to the present invention.
  • FIG. 8 is a schematic diagram of a P-CSCF processing an INVITE message of an anonymous call according to an embodiment of the method of the present invention
  • 9 is a block diagram of a processing apparatus for an IMS call according to an embodiment of the present invention
  • FIG. 10 is a block diagram showing a structure of a first embodiment of the apparatus according to the present invention
  • FIG 11 is a block diagram showing the structure of a second embodiment of the apparatus according to the present invention. detailed description
  • the main idea of the present invention is that, in the unified open multimedia service platform provided by IMS, as the types of services become more and more abundant, the user's identity information cannot be represented by the user's number alone, and the user cannot sign the contract alone.
  • the calling number display restricts the service from making anonymous calls. Therefore, the calling number display restriction service is extended to the main call information display restriction service, and the calling number display service is extended to the main call information display service. At this time, the calling UE can display the restricted service by signing the calling information.
  • an anonymous call is initiated, when the called UE does not sign the calling information display service, the called UE receives the call as an anonymous call.
  • the called UE In the process of the anonymous call, the called UE is required to be unable to display any information indicating the identity of the calling UE.
  • the invention determines whether the value of the Privacy header in the received call message is a header by the P-CSCF of the visited network, and deletes the operation of the header including the identity information of the calling user equipment according to the result of the judgment, and deletes the operation. There is a head message that may lead to the disclosure of the identity of the calling user, realizing an anonymous call in the true sense.
  • Embodiments of the present invention propose an IMS call processing method.
  • FIG. 5 is a flowchart of an IMS call processing method according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
  • Step 502 The P-CSCF of the visited network receives the start message.
  • Step 504 If the Privacy header in the originating message is assigned a header, the P-CSCF deletes the header of the calling message that includes the identity information of the calling user equipment.
  • FIG. 6 is a schematic diagram of Embodiment 1 of the method according to the present invention.
  • the process includes: Step 602, the calling UE initiates a call (INVITE), and the calling UE subscribes to a caller information display restriction.
  • the service call session control function (Sending CSCF, S-CSCF) receives the INVITE message and sends it to the home network AS (ie, the calling side AS shown in FIG. 6).
  • Step 604 After receiving the INVITE message, the home network of the calling UE assigns the Privacy header in the INVITE message to "header", and then sends the INVITE message to the S-CSCF.
  • the Privacy header in the INVITE message is assigned the value "header" in order for the server through which the message passes cannot add any headers that characterize the identity of the calling UE.
  • Step 606 After receiving the INVITE message, the called side P-CSCF deletes all the headers including the identity information of the calling UE in the INVITE message, because the value of the Privacy header in the INVITE message is "header", including P-Asserted-Identity header and Calllnfo header.
  • FIG. 7 is a schematic diagram of Embodiment 2 of the method according to the present invention. As shown in FIG. 7, the process includes: Step 702, the calling UE initiates a call (INVITE), and the called UE does not sign the calling information display service; The -CSCF receives the INVITE message and sends it to the visited network AS (i.e., the called side AS shown in Figure 7).
  • the visited network AS i.e., the called side AS shown in Figure 7
  • Step 704 After receiving the INVITE message, the called UE's home network AS assigns the Privacy header in the INVITE message to "header", and then sends the INVITE message to the S-CSCF.
  • the Privacy header in the INVITE message is assigned the value "header" so that the server through which the message passes cannot add any headers that characterize the identity of the calling UE to the message.
  • Step 706 After receiving the INVITE message, the called side P-CSCF deletes all the headers including the identity information of the calling UE in the INVITE message, because the value of the Privacy header in the INVITE message is "header", including P-Asserted-Identity header and Calllnfo header.
  • FIG. 8 the process of deleting all the headers including the identity information of the calling UE in the INVITE message is referred to FIG. 8.
  • the INVITE message received by the called side P-CSCF is included. Includes: P-Asserted-Identity (referred to as PAI in Figure 8) Head, CallInfo Head and Privacy head.
  • the called side P-CSCF determines that the value of the Privacy header is "header”, and then deletes the P-Asserted-Identity header and the Calllnfo header.
  • the P-Asserted-Identity header and the Calllnfo header can be used to identify the identity information of the calling UE.
  • the P-Asserted-Identity header is the number information of the calling UE
  • the Calllnfo header is the UE. Color image information.
  • the embodiment of the invention also provides an IMS call processing device.
  • FIG. 9 is a block diagram of an IMS call processing apparatus according to an embodiment of the present invention.
  • the apparatus includes: a receiving module 10, a determining module 20, and a deleting module 30.
  • the receiving module 10 is configured to receive a call message;
  • the determining module 20 is connected to the receiving module 10, and configured to determine whether the value of the Privacy header in the call message is a header;
  • the deleting module 30 is connected to the determining module 20 And in the case that the result of the judgment by the judging module 20 is YES (that is, the Privacy header is assigned to the header), the header of the caller message containing the identity information of the calling user equipment is deleted.
  • the deleting module 30 further comprises: a first deleting module (not shown) for deleting the PAI header in the originating message; a second deleting module (not shown) for deleting the Calllnfo in the calling message head.
  • the first deletion module and the second deletion module may be combined.
  • FIG. 10 is a structural block diagram of a first embodiment of the apparatus according to the present invention. As shown in FIG. 10, based on the structure shown in FIG. 9, the apparatus further includes: a first evaluation module 40 connected to the receiving module 10, In the case that the calling user equipment subscribes to the calling information to display the restricted service, the Privacy header in the originating message is assigned to the header.
  • FIG. 11 is a structural block diagram of a second embodiment of the apparatus according to the present invention.
  • the apparatus further includes: a second evaluation module 50, connected to the receiving module 10, for In the case that the called user equipment does not sign the calling information display service, the Privacy header in the originating message is assigned to the header.
  • a specific working process of the IMS call processing apparatus according to the embodiment of the present invention may be referred to FIG. 5 to FIG. 8 , and details are not described herein.
  • the calling P-CSCF deletes the header of the calling message in the originating message of the originating message, and includes the header of the calling user equipment identity information, and deletes the possibility.
  • the header information that leads to the disclosure of the identity of the calling user achieves a true anonymous call and increases the user experience.

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Description

IP多媒体子系统呼叫处理方法及装置 技术领域
本发明涉及多媒体技术领域, 尤其涉及一种 IP多媒体子系统 ( IMS ) 呼叫处理方法及装置。 背景技术
在传统的公共交换电话网络 ( Public Switched Telephone Network, PSTN ) 中, 仅单一地由用户的号码反映出用户的身份信息, 当主叫用户签 约了主叫号码显示限制业务, 或者被叫用户没有签约主叫号码显示业务时, 被叫用户无法看到主叫用户的号码, 因此, 认为被叫用户接收到的是一个 匿名呼叫, 无法看到主叫用户的身份信息。
IMS 是第三代移动通信合作伙伴项目 ( 3rd Generation Partnership Project, 3GPP )提出的支持 IP多媒体业务的子系统, 它可以提供多种媒体 业务, 顺应了通信网络融合的大趋势, 将逐渐成为下一代网络 ( Next Generation Network, NGN ) 的核心控制体系结构。
P-CSCF )是连接用户设备( User Equipment, UE )和 IMS网絡的入口节点, 所有 IMS终端发起和终止于 IMS终端的会话消息都要通过 P-CSCF。 P-CSCF 实际上扮演了一个代理服务器的角色, 它接收会话初始协议 (Session Initiation Protocol, SIP )请求与响应, 并向 IMS网络或用户转发。 P-CSCF 可以位于拜访网络或归属网络。 应用服务器层( Application Server, AS )位 于归属网络, 用于提供业务逻辑, 支持用户的各种业务属性。
根据 RFC-3325的规定, P- Asserted-Identity头部可以用于表征信任域中 的 SIP消息发送方的身份信息。 当 Privacy头部的取值为 "id" 时, 需要由 代理服务器删除相应消息中的 P- Asserted-Identity头部。
在 IP多媒体子系统中, 当主叫用户 A签约了主叫号码显示限制业务, 或者当被叫用户 B 没有签约主叫号码显示业务时, 被叫用户 B 所在的 P-CSCF接收到的起呼( INVITE )消息中的 Privacy头部的取值为 "id", 如 图 1和图 2所示。
根据 RFC-3325 的规定, P-CSCF 需要删除该 INVITE 消息中的 P- Asserted-Identity (图 3中简称为 PAI )头部, 表示被叫用户 B不应该看到 主叫用户 A的号码。 此时, 认为该呼叫是一个匿名呼叫, 如图 3所示。
在 IMS设计的初级阶段中, 可以提供的业务种类并不丰富, 只有主叫 用户的号码可以反映主叫用户的信息。
但是, 随着 IMS中的业务种类日渐繁多, 这样并不能保证被叫用户 B 不会以其他的形式看到主叫用户 A的身份信息。 例如, 如果用户 A同时签 约了主叫号码显示限制业务和彩像业务, 且该用户 A将自己的照片等身份 信息作为彩像信息, 则当用户 A呼叫用户 B时, 用户 B虽然无法看到用户 A的号码, 但是, 用户 B仍然可以通过 INVITE消息中的 Calllnfo头部, 从 彩像信息中了解到这是一个来自用户 A的呼叫, 从而泄露了主叫用户 A的 真实身份, 如图 3所示。
因此, 从用户体验的角度来看, 如果被叫用户看不到主叫用户的号码, 则该用户也应该看不到主叫用户的彩像等可以反映主叫用户身份的信息。
根据 RFC-3323的规定, 当主叫终端发出的请求消息中的 Privacy头部 的取值为 "header" 时, 该请求消息经过的服务器不能在该消息中增加任何 表征主叫用户身份的头部, 包括表征主叫用户彩像信息的 Calllnfo头部等, 如图 4所示。
但是, RFC-3323的处理方式仍然是有缺陷的。 一方面, 如果表征主叫 用户身份信息的头部, 例如彩像信息等, 是由主叫终端在发出的请求消息 中携带的, 那么仍然会导致匿名呼叫中的主叫用户身份的泄露。 另一方面, 由于 IMS与接入无关的特性, 因此任何智能终端或非智能终端都可以通过 相应的接入网接入到 IMS 网络中享受多媒体业务, 而对于不能灵活修改 Privacy字段的非智能终端, 也仍然会导致匿名呼叫中的主叫用户身份的泄 露。
综上, 针对上述的匿名呼叫中可能会导致用户身份泄露的问题, 相关 技术中尚未提出有效的解决方案。 发明内容
考虑到现有技术匿名呼叫中可能会导致用户身份泄露的问题而做出本 发明, 为此, 本发明的主要目的在于提供一种 IP多媒体子系统呼叫处理方 法及装置, 以解决现有技术中的上述问题。
根据本发明的一个方面, 提供了一种 IP多媒体子系统呼叫处理方法。 该方法包括:拜访网络的 P-CSCF接收起呼消息;起呼消息中的 Privacy 头部赋值为 header时, P-CSCF删除起呼消息中包含主叫用户设备身份信息 的头部。
优选地 , 删除起呼消息中包含主叫用户设备身份信息的头部进一步包 括: 删除起呼消息中的 P- Asserted-Identity头部和 Calllnfo头部。
优选地, 拜访网络的 P-CSCF接收起呼消息之前, 该方法进一步包括: 主叫用户设备向被叫用户设备发起呼叫, 主叫用户设备签约主叫信息显示 限制业务; 归属网络 AS将起呼消息中的 Privacy头部赋值为 header。
优选地, 拜访网络的 P-CSCF接收起呼消息之前, 该方法进一步包括: 主叫用户设备向被叫用户设备发起呼叫, 被叫用户设备未签约主叫信息显 示业务; 拜访网絡 AS将起呼消息中的 Privacy头部赋值为 header。
根据本发明的另一方面, 还提供了一种 IP多媒体子系统呼叫的处理装 置。 该装置包括: 接收模块, 用于接收起呼消息; 判断模块, 用于判断起 呼消息中的 Privacy头部赋值是否为 header; 及删除模块, 用于在判断模块 的判断结果为是时, 删除起呼消息中包含主叫用户设备身份信息的头部。
优选地, 删除模块进一步包括: 第一删除模块, 用于删除起呼消息中 的 P- Asserted-Identity 头部; 及第二删除模块, 用于删除起呼消息中的 Calllnfo头部。
优选地, 该装置进一步包括: 第一赋值模块, 用于在主叫用户设备签 约主叫信息显示限制业务时, 将起呼消息中的 Privacy头部赋值为 header。
优选地, 该装置进一步包括: 第二赋值模块, 用于在被叫用户设备未 签约主叫信息显示业务时, 将起呼消息中的 Privacy头部赋值为 header。
根据本发明的上述技术方案,通过拜访网络 P-CSCF删除起呼消息中的 Privacy 头部赋值为 header 的起呼消息中包含主叫用户设备身份信息的头 部, 删除了有可能导致泄露主叫用户身份的头部信息, 实现了真正意义上 的匿名呼叫, 增加了用户体验。 附图说明
图 1是根据现有技术的匿名呼叫的一种处理方式的流程图;
图 2是根据现有技术的匿名呼叫的另一种处理方式的流程图; 图 3是根据现有技术的匿名呼叫的 P-CSCF处理 INVITE消息的示意 图;
图 4是根据现有技术的匿名呼叫的 RFC-3323的解决方案的流程图; 图 5是根据本发明实施例的 IMS呼叫的处理方法的流程图; 图 6是根据本发明方法实施例一的流程图;
图 7是根据本发明方法实施例二的流程图;
图 8是根据本发明方法实施例的匿名呼叫的 P-CSCF处理 INVITE消息 的示意图; 图 9是根据本发明实施例的 IMS呼叫的处理装置的框图; 图 10是根据本发明装置实施例一的结构框图;
图 11是根据本发明装置实施例二的结构框图。 具体实施方式
本发明的主要思想主要在于, 在 IMS提供的统一的开放多媒体业务平 台中, 随着业务种类的日渐丰富, 已经不能单一地以用户的号码来表征用 户的身份信息, 用户也不能单一地通过签约主叫号码显示限制业务进行匿 名呼叫。 因此, 需要将主叫号码显示限制业务扩展为主叫信息显示限制业 务, 同时, 将主叫号码显示业务扩展为主叫信息显示业务, 此时, 主叫 UE 可以通过签约主叫信息显示限制业务而发起一个匿名呼叫,当被叫 UE没有 签约主叫信息显示业务时, 该被叫 UE接收到的呼叫也是匿名呼叫。在该匿 名呼叫的过程中, 要求被叫 UE无法显示任何表示主叫 UE身份的信息。 本 发明通过拜访网络的 P-CSCF判断接收到起呼消息中的 Privacy头部赋值是 否为 header, 并根据判断的结果删除起呼消息中包含主叫用户设备身份信 息的头部的操作, 删除了有可能导致泄露主叫用户身份的头部信息, 实现 了真正意义上的匿名呼叫。
为使本发明的目的、 技术方案和优点更加清楚, 以下结合附图及具体 实施例, 对本发明作进一步地详细说明。
本发明的实施例提出了一种 IMS呼叫处理方法。
图 5是根据本发明实施例的 IMS呼叫处理方法的流程图,如图 5所示, 该方法包括:
步骤 502, 拜访网络的 P-CSCF接收起呼消息;
步骤 504, 若起呼消息中的 Privacy头部赋值为 header, 则 P-CSCF删 除起呼消息中包含主叫用户设备身份信息的头部。
下面分别结合图 6和图 7进一步描述上述各处理的细节。 图 6是才艮据本发明方法实施例一的示意图, 如图 6所示, 该处理包括: 步珮 602, 主叫 UE发起一个呼叫 (INVITE ), 该主叫 UE签约有主叫 信息显示限制业务; 服务呼叫会话控制功能 (Sending CSCF, S-CSCF )接 收该 INVITE消息并发送到归属网络 AS (即图 6所示的主叫侧 AS )。
步骤 604,主叫 UE的归属网络 AS接收到该 INVITE消息后,将 INVITE 消息中的 Privacy 头部赋值为 "header" , 之后, 将该 INVITE 消息发送至 S-CSCF。 将 INVITE消息中的 Privacy头部赋值为 "header", 是为了使该消 息经过的服务器不能在该消息中增加任何表征主叫 UE身份的头部。
步骤 606 , 被叫侧 P-CSCF接收到该 INVITE消息后 , 由于 INVITE消 息中的 Privacy头部的取值为 "header" , 则删除该 INVITE消息中所有包含 主叫 UE身份信息的头部, 包括 P- Asserted-Identity头部和 Calllnfo头部等。
图 7是才艮据本发明方法实施例二的示意图, 如图 7所示, 该处理包括: 步骤 702, 主叫 UE发起一个呼叫 (INVITE ), 被叫 UE未签约主叫信 息显示业务; S-CSCF接收该 INVITE消息并发送到拜访网络 AS (即图 7 所示的被叫侧 AS )。
步骤 704,被叫 UE的归属网络 AS接收到该 INVITE消息后,将 INVITE 消息中的 Privacy 头部赋值为 "header" , 之后, 将该 INVITE 消息发送至 S-CSCF。 将 INVITE消息中的 Privacy头部赋值为 "header" , 是为了使该消 息经过的服务器不能在该消息中增加任何表征主叫 UE身份的头部。
步骤 706 , 被叫侧 P-CSCF接收到该 INVITE消息后, 由于 INVITE消 息中的 Privacy头部的取值为 "header", 则删除该 INVITE消息中所有包含 主叫 UE身份信息的头部, 包括 P- Asserted-Identity头部和 Calllnfo头部等。
在上述的被叫侧 P-CSCF删除 INVITE消息中所有包含主叫 UE身份信 息的头部的处理,参考图 8,如图 8所示,在被叫侧 P-CSCF接收到的 INVITE 消息中至少包括: P- Asserted-Identity (图 8 中简称为 PAI ) 头部、 Calllnfo 头部和 Privacy头部。 被叫侧 P-CSCF判断 Privacy头部的取值为 "header" , 则删除 P-Asserted-Identity头部和 Calllnfo头部。 其中, P-Asserted-Identity 头部和 Calllnfo 头部都可以用于表征主叫 UE 的身份信息, 例如: P- Asserted-Identity头部为主叫 UE的号码信息, Calllnfo头部为主叫 UE的 彩像信息。 经过上述处理 , 被叫 UE接收到的 INVITE消息中用于表征主叫 UE身份信息的 P- Asserted-Identity头部和 Calllnfo头部已经被 P-CSCF删除, 因此, 避免了主叫 UE身份泄露。
本发明实施例还提供了一种 IMS呼叫处理装置。
图 9是才艮据本发明实施例的 IMS呼叫处理装置的框图, 如图 9所示, 该装置包括: 接收模块 10, 判断模块 20, 删除模块 30。 其中: 接收模块 10, 用于接收起呼消息; 判断模块 20, 与接收模块 10相连接, 用于判断起 呼消息中的 Privacy头部赋值是否为 header; 删除模块 30, 与判断模块 20 相连接, 用于在判断模块 20判断的结果为是的情况下 (即 Privacy头部赋 值为 header ),删除起呼消息中包含主叫用户设备身份信息的头部。优选地, 删除模块 30进一步包括: 第一删除模块(未示出 ), 用于删除起呼消息中 的 PAI头部; 第二删除模块 (未示出), 用于删除起呼消息中的 Calllnfo头 部。 在具体实施过程中, 第一删除模块和第二删除模块可以合一设置。
图 10是根据本发明装置实施例一的结构框图, 如图 10所示, 在图 9 所示结构的基础上, 该装置进一步包括: 第一赋值模块 40, 与接收模块 10 相连接, 用于在主叫用户设备签约主叫信息显示限制业务的情况下, 将起 呼消息中的 Privacy头部赋值为 header。
图 11是根据本发明装置实施例二的结构框图, 如图 11 所示, 在图 9 所示结构的基础上, 该装置进一步包括: 第二赋值模块 50, 与接收模块 10 相连接, 用于在被叫用户设备未签约主叫信息显示业务的情况下, 将起呼 消息中的 Privacy头部赋值为 header。 在具体应用过程中, 根据本发明实施例的 IMS呼叫的处理装置的具体 工作流程可以参考图 5至图 8中所示, 此处不赘述。
综上所示,根据本发明上述技术方案, 通过拜访网络 P-CSCF删除起呼 消息中的 Privacy头部赋值为 header的起呼消息中包含主叫用户设备身份信 息的头部, 删除了有可能导致泄露主叫用户身份的头部信息, 实现了真正 意义上的匿名呼叫, 增加了用户体验。
以上所述仅为本发明的实施例而已, 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权 利要求范围之内。

Claims

权利要求书
1、 一种 IP多媒体子系统呼叫的处理方法, 其特征在于, 该方法包括: 拜访网络的代理呼叫会话控制功能 P-CSCF接收起呼消息;
所述起呼消息中的 Privacy头部赋值为 header时, 所述 P-CSCF删除所 述起呼消息中包含主叫用户设备身份信息的头部。
2、 如权利要求 1所述的方法, 其特征在于, 所述删除所述起呼消息中 包含主叫用户设备身份信息的头部, 进一步包括:
删除所述起呼消息中的 P- Asserted-Identity头部和 Calllnfo头部。
3、如权利要求 1或 2所述的方法,其特征在于,所述拜访网络的 P-CSCF 接收起呼消息之前, 所述方法进一步包括:
所述主叫用户设备向被叫用户设备发起呼叫, 所述主叫用户设备签约 主叫信息显示限制业务;
归属网络应用服务层 AS 将所述起呼消息中的 Privacy 头部赋值为 header„
4、如权利要求 1或 2所述的方法,其特征在于,所述拜访网络的 P-CSCF 接收起呼消息之前 , 所述方法进一步包括:
所述主叫用户设备向被叫用户设备发起呼叫, 所述被叫用户设备未签 约主叫信息显示业务;
拜访网络 AS将所述起呼消息中的 Privacy头部赋值为 header。
5、 一种 IP多媒体子系统呼叫的处理装置, 其特征在于, 该装置包括: 接收模块、 判断模块和删除模块; 其中,
接收模块, 用于接收起呼消息;
判断模块,用于判断所述起呼消息中的 Privacy头部赋值是否为 header; 删除模块, 用于在所述判断模块的判断结果为是时, 删除所述起呼消 息中包含主叫用户设备身份信息的头部。
6、如权利要求 5所述的装置, 其特征在于, 所述删除模块进一步包括: 第一删除模块和第二删除模块; 其中,
第一删除模块, 用于删除所述起呼消息中的 P-Asserted-Identity头部; 第二删除模块, 用于删除所述起呼消息中的 Calllnfo头部。
7、如权利要求 5或 6所述的装置, 其特征在于, 所述装置进一步包括: 第一赋值模块, 用于在所述主叫用户设备签约主叫信息显示限制业务 时, 将所述起呼消息中的 Privacy头部赋值为 header。
8、如权利要求 5或 6所述的装置, 其特征在于, 所述装置进一步包括: 第二赋值模块, 用于在所述被叫用户设备未签约主叫信息显示业务时, 将所述起呼消息中的 Privacy头部赋值为 header。
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