CN100512161C - Method for transmitting legal monitoring information - Google Patents

Method for transmitting legal monitoring information Download PDF

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Publication number
CN100512161C
CN100512161C CN 200710084874 CN200710084874A CN100512161C CN 100512161 C CN100512161 C CN 100512161C CN 200710084874 CN200710084874 CN 200710084874 CN 200710084874 A CN200710084874 A CN 200710084874A CN 100512161 C CN100512161 C CN 100512161C
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message
information
network
monitor
cc
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CN 200710084874
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CN101110715A (en
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施有铸
波 郑
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Supervisory, monitoring, management, i.e. operation, administration, maintenance or testing arrangements
    • H04M3/2281Call monitoring, e.g. for law enforcement purposes; Call tracing; Detection or prevention of malicious calls
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/30Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information
    • H04L63/306Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information intercepting packet switched data communications, e.g. Web, Internet or IMS communications

Abstract

本发明公开一种传递合法监听信息的方法,该方法包括:在与监听对象相关的消息中携带监听信息,发送给参与监听对象会话的网络功能实体;网络功能实体根据收到的监听信息对监听对象进行监听,向执法机构侧上报监听相关信息IRI和/或通信内容CC,其中,所述消息为呼叫会话SIP消息,所述在与监听对象相关的消息中携带监听信息为:服务呼叫会话控制功能S-CSCF在与监听对象相关的SIP消息中携带监听信息;或者,S-CSCF将与监听对象相关的SIP消息发送给合法监听业务应用服务器LI-AS,LI-AS在SIP消息中携带上监听信息,再发送给S-CSCF。 The present invention discloses a method for lawful interception of information transmitted, the method comprising: carrying the information in a message relating to listening intercepted object, the transmission function to participate in the network session intercepted object entity; network function entity according to the received information on listener listens object monitoring, reporting listener Related information IRI and / or law enforcement agencies content of communication CC side, wherein the message is a SIP call session message, the message carrying the information related to the listener to listen for the object: serving call session control function S-CSCF carries associated with the intercepted object SIP message listening information; Alternatively, S-CSCF associated with the intercepted object SIP message to the lawful interception service application server LI-AS, LI-AS carried on in the SIP message monitor the information, and then transmitted to the S-CSCF. 本发明提供的方法可以降低ADMF管理和维护网络功能实体的工作量和数据泄密的可能性。 The method of the present invention may be provided to reduce the likelihood of ADMF management and maintenance workload and data network functional entities compromised.

Description

一种传递合法监听信息的方法 A method for lawful interception of information transmitted

技术领域 FIELD

本发明涉及合法监听领域,尤其涉及一种传递合法监听信息的方法。 The present invention relates to lawful interception, and in particular relates to a method for lawful interception of the information transfer. 背景技术 Background technique

合法监听是执法机构经相关授权机关批准,根据国家相关法律和公众通信网行业规范对公众通信业务进行监听的执法行为。 Lawful interception of law enforcement agencies approved by the relevant authorized bodies, monitor the behavior of law enforcement communications services to the public in accordance with state laws and public communications network industry standards.

为了实现IP多媒体子系统(IMS, IP Multimedia Subsystem )网络中的合法监听,3GPPTS33.107标准定义了针对IMS网络的合法监听模型,具体参见图1,该模型包括:司法执行监视设备(LEMF, Law Enforcement Monitoring Facility )、合法监听的管理功能(ADMF, Administration Function ) 实体、转交功能(DF, Delivery Function)实体、服务呼叫会话控制功能(S-CSCF, Serving-Call Session Control Function)和/或代理呼叫会话控制功負fe (P-CSCF, Proxy-Call Session Control Function)实体。 In order to achieve IP Multimedia Subsystem (IMS, IP Multimedia Subsystem) network, lawful interception, 3GPPTS33.107 standard defines a model for lawful interception IMS network, specifically to Figure 1, the model includes: judicial enforcement surveillance equipment (LEMF, Law Enforcement Monitoring Facility), lawful interception management function (ADMF, administration function) entity, transmit function (DF, Delivery function) entity, service call session control function (S-CSCF, serving-call session control function), and / or a proxy call negative session control function fe (P-CSCF, Proxy-Call session control function) entity. 其中LEMF、 ADMF和DF位于执法机构侧,S-CSCF和P-CSCF作为IMS网络中的监听控制单元位于IMS网络中。 Wherein LEMF, ADMF law enforcement agencies and positioned side DF, S-CSCF and P-CSCF in the IMS network as a monitor control unit is located in an IMS network.

在具体的业务实现中,当需要在IMS网络中执行监听时,ADMF将执法机构側的各种监听数据携带在监听指示中,通过Xl一l接口发送给IMS网络中的S-CSCF和/或P-CSCF,当与监听对象相关的呼叫会话信令消息经过S-CSCF和/或P-CSCF时,S-CSCF和/或P-CSCF根据监听指示中携带的监听数据对监听对象进行监听,并将所获取的监听相关信息URI, Intercept Related Information)通过X2接口上报至执法机构侧的DF。 In a specific implementation, operations, when you need to listen in the IMS network, the ADMF various law enforcement agencies monitor side carries data in the listening indication, sent via the interface Xl l to a S-CSCF IMS network and / or P-CSCF, when a monitor object associated with the call session signaling message via S-CSCF and / or P-CSCF, S-CSCF and / or listening to the object P-CSCF according to the data listener listens indication carries listening, and interception related information acquired URI, Intercept Related information) reported to law enforcement agencies DF side via the X2 interface. 其中,监听指示可以包括:监听对象激活指示、监听对象查询指示及监听对象属性修改指示等;监听数据可以包括监听对象的标识等。 Wherein the indication may monitor comprising: a listener object activation indication, and the listener listening object query indication modification indication object attributes and the like; listening data may include an identification of the intercepted object and the like.

5在这种实现合法监听的方案中,由于S-CSCF和/或P-CSCF无法获知除了基本会话消息以外的补充业务事件,例如由应用服务器(AS, Application Server)提供的增值业务,所以S-CSCF和/或P-CSCF无法将监听对象的补充业务事件上报给DF,因此,执法机构侧无法监听到IMS网络中监听对象的补充业务事件。 5 In this implementation, the lawful interception embodiment, since the S-CSCF and / or P-CSCF can not know in addition to the basic event supplementary service session message, such as provided by an application server (AS, Application Server) value-added services, the S -CSCF and / or P-CSCF supplementary service can not be reported to the event listener object DF, therefore, law enforcement agencies can not monitor side business to supplement the IMS network event listener objects.

针对这一问题,欧洲电信标准协会(ETSI)下属的TISPAN研究合法监听(LI, Lawful Interception )的最新文稿10tTD077al DTS-07013,定义了上报IRI的功能实体还可以进一步包括与ADMF和DF相连的AS。 To solve this problem, the European Telecommunications Standards Institute (ETSI) under the TISPAN latest research presentation 10tTD077al DTS-07013 lawful interception (LI, Lawful Interception), the definition of reporting IRI functional entity may further include AS and DF connected with ADMF . 在这种情况下,ADMF可以将监听数据携带在监听指示中通过X1一1接口直接发送给AS,由于AS负责处理诸如增值业务的补充业务,所以AS可以根据监听数据将与补充业务事件相关的IRI上报给DF,从而可以解决执法机构侧无法监听到IMS网络中监听对象补充业务事件的问题。 In this case, ADMF monitor data can be sent directly to the AS by carrying X1-1 interface listening instructions, because AS is responsible for handling of supplementary services, such as value-added services, so that AS can monitor data related to supplementary service events IRI reported to DF, which can solve the side of law enforcement agencies can not listen to the IMS network in supplementary services event listener objects problems.

然而,引入AS虽然解决了监听时上报监听对象补充业务事件的问题, 但是在IMS网络中,AS可能不是由执法机构和运营商提供,而是由第三方提供,所以ADMF将监听数据发送给AS可能造成监听数据的泄密,存在巨大的安全隐患。 However, the introduction of AS reported While listening to solve the problem of supplementary services event listener objects, but in an IMS network, AS may not be provided by law enforcement agencies and operators, but by a third party, so ADMF send data to monitor AS data leak can cause the listener, there is a huge security risk.

另外,由于监听对象可能会签约使用多种不同的业务,这些不同的业务可能由不同的AS提供,为使这些AS通过X1一1接口获得监听对象的监听数据,ADMF需要对这些AS进行管理,配置和维护这些AS的信息。 In addition, because the listener object may sign a number of different businesses, these different services may be provided by different AS, AS by listening to these data X1 interface to get a 1 intercepted object, ADMF need to manage these AS, AS configuration and maintenance of these information. 当监听对象签约业务的信息发生变化时,ADMF上需要做同步的更新处理,使对应的AS获得或删除相应的监听数据,这极大地增加了执法机构侧ADMF 管理和维护的工作量。 When the information intercepted object subscription service changes needs to be done on ADMF update process synchronization, the corresponding AS acquired or delete the corresponding monitor data, which greatly increases the side of law enforcement agencies ADMF management and maintenance workload.

从以上描述可以看到,当前实现合法监听的才莫式总结起来为:ADMF 将监听数据发送给可以上报IRI的网络功能实体,当与监听对象相关的消息经过这些网络功能实体时,网络功能实体根据监听数据对监听对象进行监听,向DF上才艮IRI。 Can be seen from the above description, the current implementation of lawful interception before Morse summed up as: ADMF will monitor data to be reported by IRI network functional entity, when the messages related to monitor these objects through the network functional entities, network functional entities listens to monitor data objects based on listening only to Burgundy IRI on DF. 这种实现合法监听的方式具有以下缺点: 一是容易造成监听数据的泄密,存在安全隐患;二是由于ADMF需要管理和维护众多 Achieved in this way lawful interception has the following disadvantages: one is likely to cause leakage monitor data, there are security risks; second is due to the need to manage and maintain many ADMF

6的获得监听数据的网络功能实体,因此ADMF管理和维护的工作量大,负担重。 Obtaining data network functional entities monitor 6, therefore ADMF management and maintenance workload and burden.

发明内容 SUMMARY

有鉴于此,本发明的主要目的在于提供一种传递合法监听信息的方法, 可以降低ADMF管理和维护网络功能实体的工作量。 In view of this, the main object of the present invention is to provide a method for lawful interception of information transmitted can reduce the workload of network management and maintenance ADMF functional entities. 本发明进一步的目的是可以降低监听数据被泄密的可能性,保证监听安全。 A further object of the present invention is to reduce the possibility of interception data can be compromised to ensure the safety monitor. 具体地,该方法包括: Specifically, the method comprising:

A、 在与监听对象相关的消息中携带监听信息,发送给参与监听对象会话的网络功能实体; A, carrying the information in the message relating to listening intercepted object, the transmission function entity to participate in the network session intercepted object;

B、 网络功能实体根据收到的监听信息对监听对象进行监听,并向执法机构侧上报监听相关信息IRI和/或通信内容CC, B, listen for network monitor function entity object based on the received monitor information, and reports the listener Related Information IRI and / or law enforcement agencies Content of Communication CC side,

其中,步骤A中所述消息为呼叫会话SIP消息,所述在与监听对象相关的消息中携带监听信息为:服务呼叫会话控制功能S-CSCF在与监听对象相关的SIP消息中携带监听信息;或者, Wherein said step A message is a SIP call session message, the message carries the monitor information associated with the listening object: serving call session control function S-CSCF carries the information related to the listener listening SIP message object; or,

S-CSCF将与监听对象相关的SIP消息发送给合法监听业务应用服务器LI-AS, LI-AS在SIP消息中携带上监听信息,再发送给S-CSCF。 The S-CSCF associated with the intercepted object SIP message to the application server lawful interception LI-AS, LI-AS in a SIP message carrying information on the monitor, and then sent to the S-CSCF. .

所述网络功能实体为应用服务器AS、问询呼叫会话控制功能I-CSCF、 互通边界控制功能IBCF、出口网关控制功能BGCF、媒体网关控制功能MGCF、媒体网关、媒体资源功能处理器MRFP之一或任意组合。 The network application function entity to the AS server, inquiry call session control function I-CSCF, IBCF Interworking Border Control Function, Breakout Gateway Control Function the BGCF, the MGCF Media Gateway Control Function, one Media Gateway, Media Resource Function Processor MRFP or random combination.

当监听对象为主叫方时,所述在与监听对象相关的消息中携带监听信息为:网络接入单元在与监听对象相关的SIP消息中携带监听信息。 When intercepted object calling party, the message carried in the object associated with the listener listening information: Network access unit listens to carry information associated with the SIP message listener objects.

在所述步骤B之后,该方法进一步包括: After said step B, and the method further comprises:

网络接入单元、S-CSCF、 I-CSCF、 IBCF、 BGCF或MGCF在将SIP消息发往非信任域网络实体时,删除SIP消息中携带的监听信息。 Network access unit, S-CSCF, I-CSCF, IBCF, BGCF or MGCF when the SIP message sent to the network entity the untrusted domain, to remove listeners information carried in the SIP message. 所述在SIP消息中携带监听信息包括: The listener in the SIP message carrying information comprises:

利用SIP头域携带监听信息或利用SIP消息体携带监听信息。 Using SIP header field carries information listener or listeners using the SIP message body carries the information.

步骤A中所述消息为Diameter消息、或H.248消息、或COPS消息。 Step A, the message is a Diameter message or a H.248 message, or a COPS message. 所述消息为Diameter消息时,所述网络功能实体为服务策略决策功能SPDF或策略决策功能PDF; When the message is a Diameter message, the network functional entity is a Policy Decision Function SPDF service or policy decision function PDF;

所述消息为H.248消息时,所述网络功能实体为媒体网关或MRFP; When the message is an H.248 message, the network function or entity The MRFP is a media gateway;

所述消息为COPS消息时,所述网络功能实体为GPRS网关支持节点GGSN。 When the message is a COPS message, said network functional entity is a gateway GPRS support node GGSN.

所述步骤A包括:. Said step A comprising:

所述消息为Diameter消息时,应用功能AF实体在Diameter消息中携带监听信息发送给服务策略决策功能SPDF或策略决策功能PDF; When the message is a Diameter message, the application function AF entity to carry information in listening Diameter message sent to the service policy decision function SPDF or policy decision function PDF;

所述消息为H.248消息时,SPDF或PDF或MGCF在H.248消息中携带监听信息发送给媒体网关,或者,媒体资源功能控制器MRFC在H.248 消息中携带监听信息发送给MRFP; When the message is an H.248 message, the SPDF or PDF or MGCF within an H.248 message carries the monitor sends information to the media gateway, or, in a Media Resource Function Controller MRFC H.248 message carries the information to the monitor The MRFP;

所述消息为COPS消息时,PDF在COPS消息中携带监听信息发送给GGSN。 When the message is a message COPS, PDF monitor carries information to GGSN in COPS messages.

所述应用功能实体为代理呼叫会话控制功能实体P-CSCF或互通边界控制功能实体IBCF或接入网关控制功能AGCF。 The application function entity is a proxy call session control function P-CSCF entity or IBCF Interworking Border Control Function entity, or an access gateway control function AGCF.

所述监听信息包括:监听对象的标识。 The monitor information comprises: identifying intercepted object. 所述监听对象的标识由SIP统一资源标识符、电话统一资源定位符、 一方或多方被监听的标志之一或任意组合构成。 The monitor object is identified by a SIP uniform resource identifier, a telephone uniform resource locator, one sign being monitored one or more parties, or any combination thereof. 所述监听信息进一步包括:上报IRI和/或CC的指示、DF地址、 密钥或证书、取消监听指示之一或任意组合。 The monitor information further comprises: reporting indicator IRI and / or the CC, DF address, key or certificate, or cancel one sense instructing any combination thereof. 所述DF地址包括DF2地址和/或DF3地址。 The DF DF2 address comprises an address and / or address DF3.

所述网络功能实体上报CC具体包括: Said network functional entity CC reporting comprises:

一个网络功能实体向执法机构侧上报CC后,指示后续的网络功能实体不 A network functional entity CC reported to law enforcement agencies after the side, indicating that the subsequent network functional entity is not

必再次上报所述CC。 The CC will be reported again.

所述指示后续网络功能实体不必再次上报CC的方法包括: 所述一个网络功能实体在监听信息中删除上报CC的指示,或将上报CC The method of indicating that the subsequent network functional entities do not have to report again CC comprising: a network functional entity in the monitor report instruction information remove CC or CC will be reported

的指示设置为否;则所述后续网络功能实体接收到所述监听信息后,不再上报cc。 No indication is provided; then the subsequent network function entity receiving the monitoring information, not reported cc.

8所述指示后续网络功能实体不必再次上报CC的方法包括: 所述一个网络功能实体在监听信息中删除DF3地址,或将DF3地址设置为无效;则所述后续网络功能实体接收到所述监听信息后,不再上报CC。 8 indicates the subsequent network functional entities do not have to report again CC method comprising: a network functional entity in the monitor address information deleted DF3, DF3 or invalid address is set; then the subsequent network function entity receiving the monitoring after the information is no longer reported to CC. 所述指示后续网络功能实体不必再次上报CC的方法包括; 所述一个网络功能实体将监听信息中的CC上报完成指示设置为是;则所述后续网络功能实体接收到所述监听信息后,不再上报CC。 The method of indicating that the subsequent network functional entities do not have to report again CC comprises; a functional entity to a network monitor information CC is set to indicate complete report; then the subsequent network function entity receiving the monitoring information, not and then reported to CC.

所述CC上报完成指示还进一步包括:完成上报CC的网元和/或CC上报对应的DF3地址。 CC indicating the completion report further comprising: reporting the completion of the network elements and CC / CC or the addresses corresponding to the reported DF3.

从以上技术方案可以看到,本发明提供的传递合法监听信息的方法,由于在与监听对象相关的消息中携带监听信息,通过发送与监听对象相关的消息传递监听信息给参与监听对象会话的网络功能实体,由网络功能实体根据监听信息进行监听,并向DF上报IRI和/或CC,所以能降低ADMF管理和维护这些网络功能实体的工作量;另外,由于在与监听对象相关的消息发往不执行监听的网络功能实体时,删除与监听对象相关的消息中携带的监听信息,所以监听信息被泄密的可能性降低,提高了监听的安全性。 Can be seen from the above technical solutions, the present invention provides a method for delivering a lawful interception information, since the information in the message carrying the monitor object associated with the listener, the listener transmits the message by transmitting monitor information related to the object to participate in the network session intercepted object functional entity by a network monitor according to the functional entity monitor information, and reporting IRI DF and / or the CC, it is possible to reduce the workload of management and maintenance of these ADMF network functional entities; Further, since the message sent to the monitor associated with the object when the monitored network functional entity does not execute, delete the message related to the intercepted object information carried in listening, so listen for the possibility of information leakage is reduced, improving the security of listening.

附图说明 BRIEF DESCRIPTION

图1是现有技术中IMS网络的合法监听模型示意图; 图2是根据本发明实施例的涉及监听对象信令消息的合法监听网络逻辑结构图; 1 is a schematic model of the prior art lawful interception IMS network; FIG. 2 is a logic block diagram of the network according to lawful interception of signaling messages directed to target listeners embodiment of the present invention;

图3是根据本发明实施例的传递合法监听信息的流程图; 图4是根据本发明实施例的涉及监听对象媒体流的合法监听网络逻辑结构图。 3 is a flowchart lawful interception information according to an embodiment of the present invention is transferred; FIG. 4 is a logic diagram of the structure of the network relates to lawful interception intercepted object of the present invention, embodiments of a media stream.

具体实;^方式 Specific; ^ embodiment

为了使本发明的特征和优点更加清楚明白,下面参照附图结合具体实施例对本发明作进一步的描述。 In order to make the features and advantages of the present invention will become more apparent, specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

9本发明的主要思想是:在与监听对象相关的消息中扩展携带监听信息, 在将与监听对象相关的消息发送给参与监听对象会话的网络功能实体的同时,将监听信息传递给参与监听对象会话的网络功能实体,这些网络功能实体根据所收到的监听信息对监听对象进行监听,上报IRI和/或通信内容(CC, Content of Communication),由于本发明采用的方法在与监听对象相关的消息中传递合法监听信息,不需要ADMF管理和维护众多的网络功能实体, 所以可以降^f氐ADMF的工作量。 The main idea 9 invention is: a message relating to listening object extension carries monitor information sent to the network functional entities involved intercepted object session in a message associated with the intercepted object while the monitor information to participate intercepted object functional entities of the network session, the network monitor function entity according to the information received intercepted object monitoring, reporting IRI and / or the content of the communication (CC, content of communication), since the method of the present invention is employed in the monitor associated with the object message passing lawful interception of information, no ADMF manage and maintain many of the network functional entities, it is possible to lower the workload ^ f Di ADMF.

下面参照附图结合具体实施例描述本发明主要思想的具体实现。 DETAILED implemented in conjunction with the accompanying drawings described with specific embodiments with reference to the main idea of ​​the present invention.

首先,参见图2,描述根据本发明实施例的涉及监听对象信令消息的合法监听网络逻辑结构。 First, referring to FIG. 2, the logical structure of a network for lawful interception of signaling messages directed intercepted object according to an embodiment of the present invention. 图2以IMS网络为例,给出包括终端、网络接入单元、S-CSCF、 AS和合法监听业务应用服务器(LI-AS)的网络结构。 IMS network as an example in FIG. 2, comprises a given terminal, a network access unit, S-CSCF, AS Application Server and lawful interception (LI-AS) network structure.

这里,终端是监听对象,可以是会话初始化协议(SIP, Session Initiation Protocol)终端;也可以是传统普通电话服务(POTS, Plain Old Telephone Service )终端和综合业务数字网(ISDN, Integrated Services Digital Network) 终端。 Here, the terminal is to monitor the object, may be a session initiation protocol (SIP, Session Initiation Protocol) terminal; can also be a traditional telephone service (POTS, Plain Old Telephone Service) terminals and integrated services digital network (ISDN, Integrated Services Digital Network) terminal.

网络接入单元与终端和S-CSCF相连,用于将终端接入到IMS网络中, 并提供注册、认证和鉴权等功能。 The network access unit and the terminal is connected to the S-CSCF, for the access terminal to the IMS network, and provides registration, authentication and authorization functions. 网络接入单元和S-CSCF之间的El接口采用SIP协议。 El between the network access unit interface to the S-CSCF using SIP protocol. 网络接入单元可以是应用功能实体(AF, Application Function),例如P-CSCF,对应接入的终端是SIP终端;网络接入单元也可以是4妄入网关4空制功能(AGCF, Access Gateway Control Function ),对应接入的终端是POTS终端和ISDN终端。 The network access unit may be an Application Function (AF, Application Function), e.g. P-CSCF, the corresponding access terminal is a SIP terminal; network access unit 4 may be made to jump into the space 4 a gateway function (AGCF, Access Gateway Control Function), the corresponding access terminal is a terminal and the ISDN terminal POTS.

网络接入单元可以接收执法机构侧发送的携带有监听数据的监听指示, 如果监听对象是主叫方,则主叫方发送的SIP消息到达可以使其接入网络的网络接入单元时,网络接入单元在SIP消息中扩展携带上监听信息,于是, SIP消息所经过的后续网元,例如互通边界控制功能(IBCF, Interconnection Border Control Function)、问询呼叫会话控制功能(I-CSCF, Interrogation-Call Session Control Function) 、 S國CSCF、 AS、出口网关控制功能(BGCF, Breakout Network access unit may receive a transmission side when a law enforcement agency carries monitor monitor data indicative of the calling party if the object is a monitor, the SIP message sent by the calling party can make a network access unit reaches the access network, the network extension access unit in the SIP message carries the information on the monitor, then, the SIP message passes subsequent network element, e.g. interworking border control function (IBCF, Interconnection border control function), inquiry call session control function (I-CSCF, Interrogation -Call Session control function), S country CSCF, AS, Breakout gateway control function (BGCF, Breakout

10Gateway Control Function)、々某体网关控制功能(MGCF, Media Gateway Control Function)等将根据收到消息中携带的监听信息进行相应的监听处理,向DF上报IRI和/或CC。 10Gateway Control Function), a body 々 Gateway Control Function (MGCF, Media Gateway Control Function) or the like corresponding processing according to the listener to listen the information carried in the message received, reporting IRI and / or the CC to the DF. 当网络接入单元将SIP消息发往非信任域网络实体时,删除SIP消息中携带的监听信息。 When the network access unit SIP message sent untrusted domain network entity, the SIP message information to remove listeners carried. 这里,非信任域网络实体是相对于信任域网络实体来说的,信任域网络实体是指服务提供者(service provider)拥有的、和/或可操作的、和/或可控制的系统和服务器,相对的, 非信任域网络实体可以是消费者的设备或第三方的设备等。 Here, untrusted domain network entity is trusted with respect to a network entity for the domain, trusted domain network entity is a service provider (service provider) has, and / or operable, and / or the control system and the server relative, non-trusted domains network entity may be the consumer's equipment or third party equipment.

S-CSCF与AS相连,二者之间存在E2接口,该接口协议为SIP协议。 S-CSCF and the AS is connected, an interface exists between the two E2, the interface protocol in the SIP. S-CSCF也可以接收执法机构侧发送的携带有监听数据的监听指示,在与监听对象相关的SIP消息到达为监听对象服务的S-CSCF时,在SIP消息中扩展携带上监听信息,该SIP消息所经过的后续网元,例如IBCF、 I-CSCF、 AS、 BGCF、 MGCF、网络接入单元等将根据收到消息中携带的监听信息进行相应的监听处理。 S-CSCF may also receive enforcement mechanism side is sent when carrying the monitor indicating monitor data arriving S-CSCF is intercepted object and services in associated with the intercepted object SIP messages, extended in the SIP message carries the listener information, the SIP after subsequent message network element, e.g. IBCF, I-CSCF, aS, BGCF, MGCF, like a network access unit corresponding processing according to the listener to listen the information carried in the message received. 当S-CSCF将SIP消息发往例如AS等其它非信任域网络实体时,删除SIP消息中携带的监听信息。 When the S-CSCF a SIP message to the untrusted domain such as other network entity AS, etc., to remove listeners information carried in the SIP message.

LI-AS是执行合法监听业务逻辑的功能实体,提供合法监听服务,可以从执法机构侧获得监听数据。 LI-AS is a functional entity to perform lawful interception business logic, providing lawful interception service, you can get data from law enforcement agencies monitor side. LI-AS与S-CSCF之间存在E3接口,接口协议为SIP协议。 E3 interface exists between the LI-AS and S-CSCF, the SIP interface protocol. LI-AS接收执法机构侧发送的携带有监听数据的监听指示, 在与监听对象相关的SIP消息到达为监听对象服务的LI-AS时,在SIP消息中扩展携带上监听信息,该SIP消息所经过的后续网元,如IBCF、 I-CSCF、 S-CSCF、 AS、 BGCF、 MGCF、网络接入单元等将根据收到消息中携带的监听信息进行相应的监听处理。 Sending carrying LI-AS receives the law enforcement agency side sense instructing monitor data arriving LI-AS is intercepted object and services in associated with the intercepted object SIP message extension carries the listener information in the SIP message, the SIP message after subsequent network elements, such as IBCF, I-CSCF, S-CSCF, aS, BGCF, MGCF, like a network access unit corresponding processing according to the listener to listen the information carried in the message received.

此外,LI-AS也可以不接收执法机构侧发送的携带有监听数据的监听指示,而是由S-CSCF对LI-AS的触发表明S-CSCF当前服务用户是监听对象, S-CSCF从执法机构侧获取监听数据,在SIP消息到达S-CSCF后,S-CSCF 根据监听数据判断当前会话中被服务用户是否被监听,若被监听则将SIP消息路由到LI-AS;或者S-CSCF收到的监听数据是一种触发过滤规则,S-CSCF Further, LI-AS law enforcement agencies may not receive the transmission side carries data indicating the Listener listens, but by the S-CSCF is triggered to indicate that the LI-AS S-CSCF currently serving the user is to monitor an object, from the S-CSCF enforcement monitor data acquisition mechanism side, the SIP message reaches the S-CSCF, S-CSCF determines the current session is the service whether the user is listening, the listener if they are then routes the SIP message to the interception data according to LI-AS; S-CSCF or close to monitor for triggering data filtering rule, S-CSCF

将收到的SIP消息和该过滤规则匹配,匹配成功则将该SIP消息路由到 And the received SIP message matches the filtering rules, the match is successful routes the message to the SIP

iiLI-AS, LI-AS在收到的SIP消息中插入监听信息。 iiLI-AS, LI-AS inserted listening information received SIP message. 这里所述的触发过滤规则可以和其它的初始过滤规则(iFC) —样,由S-CSCF从归属用户服务器(HSS)中获取;也可以由S-CSCF根据从执法机构侧获取的监听数据产生。 Filtering rules trigger may be described herein and other Initial Filter Criteria (iFC) -, S-CSCF acquires from the home subscriber server (HSS) by the sample; may also be generated by the S-CSCF in accordance with the data acquired from the listener side law enforcement agencies .

此外,除了网络接入单元、S-CSCF可以将发往非信任域网络实体的SIP消息中携带的监听信息删除以外,作为网络边界网元的IBCF、 BGCF、I-CSCF、 MGCF也可以从SIP消息中删除相关的监听信息,这些删除可以是无条件的,也可以通过判断SIP消息发往非信任域进行触发删除。 In addition to the network access unit, S-CSCF may be sent to the network entity untrusted domain other than the SIP message carries information deletion listener, as the network boundary IBCF NE, BGCF, I-CSCF, MGCF from the SIP may be delete the message related information monitor, these deletions may be unconditional, non-trusted domains can also be triggered to delete the message sent by SIP judgment.

此外,在分组域中,媒体网关和媒体资源功能处理器(MRFP, MediaResource Function Processor)在一般情况下,是基于H.248协议控制的,但在某些情况下,也可以基于SIP协议控制,因此,上述携带监听信息的SIP消息也可以发往媒体网关和MRFP, MRPP有时也被称为媒体资源服务器。 Further, in the packet domain, the media gateway and the media resource function processor (MRFP, MediaResource Function Processor) In general, the control is based on the H.248 protocol, but in some cases, may be controlled based on the SIP protocol, Therefore, the carrying-monitor information of SIP messages can also be sent to the media gateway and the MRFP, MRPP is sometimes called the media resource server.

下面基于图2所示的网络逻辑结构,描述传递合法监听信息的具体过程。 The following logical structure based on the network shown in Figure 2, the specific process described transmission lawful interception information. 在本实施例中,IMS网络中的监听对象为被叫方,被叫方可能签约不同的业务,每个业务由不同的AS处理,这里,假定该被叫方签约了源标识显示(OIP, Originating Identification Presentation)业务,由OIP AS处理被叫方的该业务,因此,参与监听对象会话的网络功能实体为OIP AS,与监听对象相关的消息是SIP消息中的请求消息Invite。 In the present embodiment, the object in the IMS network monitor called party, the called party may sign different services, each service is handled by the AS different, here, it is assumed that the called party subscribes to the display source identifier (the OIP, Originating Identification Presentation) service, the called party OIP aS processing the service, and therefore, functional network entities involved in the session is intercepted object OIP aS, associated with the message is a request message listener objects Invite SIP message.

参见图3,传递合法监听信息的具体过程包括: The specific process 3, the lawful interception information transmitted comprises:

步骤301-303、发往监听对象的请求消息Invite到达为监听对象服务的S-CSCF, S-CSCF在执行监听对象用户配置中的iFC之前,在请求消息Invite中扩展携带监听对象的监听信息,然后S-CSCF执行iFC,将请求消息路由到OIP AS; Steps 301-303, the request message to the listening object reaches Invite S-CSCF, S-CSCF services is intercepted object before performing the object monitor the iFC in the user configuration, extending the listening information carried in the request message listener objects in the Invite, S-CSCF then performed iFC, the request message is routed to the OIP AS;

OIP AS为监听对象提供了源标识显示业务,因此,当向作为监听对象的被叫方发送请求消息时,为被叫方服务的S-CSCF会根据iFC将请求消息路由到OIPAS,为了可以监听到OIP AS提供的补充业务事件,在S-CSCF将请求消息路由到OIPAS之前,在请求消息中扩展携带上监听信息,然后,S-CSCF再执行iFC,将请求消息路由到OIP AS,这样OIPAS就可以收到 OIP AS intercepted object to provide a source identification presentation service, and therefore, when sending a request message to the called party as a monitor object, S-CSCF of the called party based on the service request message is routed to the iFC OIPAS, may listen to supplementary service event to the OIP AS provided, the S-CSCF a request message before routing to OIPAS, expansion carry on listening information in the request message, then, S-CSCF re-execute the iFC, the request message is routed to the OIP AS, so OIPAS you can receive

12监听信息。 12 monitor information. 于是,OIP AS不需要从ADMF上获取监听数据来执行监听从而上报IRI,换句话说,ADMF不用管理和维护OIP AS,因此降低了ADMF管理和维护OIP AS的工作量。 So, OIP AS does not need to be obtained from the ADMF monitor data to perform in order to listen to report IRI, in other words, ADMF do not manage and maintain OIP AS, thus reducing the OIP AS ADMF management and maintenance workload.

步骤304-307、 OIPAS收到S-CSCF路由过来的请求消息后,执行OIP业务处理,并解析请求消息,根据请求消息中携带的监听信息,上报监听对象发生OIP业务的补充业务事件给DF,然后将请求消息路由回为监听对象服务的S-CSCF; After steps 304-307, OIPAS received route request message over the S-CSCF performs service processing OIP and parses the request message, according to the information request message carries the listener, the event listener objects reporting the occurrence of supplementary services to business OIP DF, request message is then routed back to the S-CSCF intercepted object and services;

步骤308-309、 S-CSCF收到OIP AS路由回来的请求消息后,根据iFC的优先级判断是否还需要将请求消息路由到其它AS,这里假定被叫方只签约了OIP业务,那么,S-CSCF可以确定不需要将请求消息路由到其它AS,即请求消息需要发往非AS,于是S-CSCF删除请求消息中扩展携带的监听信息,然后将请求消息路由到其它实体,例如直接路由到被叫方的网络接入单元。 After steps 308-309, S-CSCF receives the request message and arrives OIP the AS according to the iFC priority determining whether the request message also needs to be routed to the AS other, is assumed here that only the called party subscribes to the service OIP, then, S -CSCF can determine that no further request message is routed to the AS, i.e. the request message needs to be sent to the AS the non-, S-CSCF then extended deletion request message carries the information of the listener, and then route the request message to other entities, such as direct routes to network access unit of the called party.

由于在SIP请求消息中携带监听信息发送给AS, AS根据SIP请求消息中携带的监听信息上报IRI,并不存储ADMF发送的监听数据,并且在请求消息发送给非AS时,S-CSCF会删除请求消息中的监听信息,所以可以降低数据泄密的可能性。 Since listening message carries information transmitted to the AS in a SIP request, AS IRI report information in accordance with the listener's SIP request message carries, does not store monitor data ADMF transmitted, and when the request message to a non-AS, S-CSCF deletes request listening information in the message, so the possibility of data leakage can be reduced.

以上仅参照图3以监听对象作为被叫方并应用OIP业务为例,描述了在请求消息中携带监听信息发送给OIP AS, OIP AS根据请求消息中携带的监听信息上报补充业务事件的过程,事实上,无论监听对象是处于呼叫中的哪一方,无论是主叫方还是被叫方,所有到达为监听对象服务的S-CSCF的、与监听对象相关的请求消息,S-CSCF都可以在请求消息中携带上监听信息,将请求消息发送给监听对象用户配置中iFC指定的AS,同时也就将监听信息传递给了AS,在S-CSCF将请求消息发送给其它非信任域网络实体时,S-CSCF或者作为网络边界网元的IBCF、 BGCF、 I-CSCF、 MGCF删除请求消息中携带的监听信息。 Above with reference to FIG. 3 only to listen to the object as the called party and OIP service as an example application, describes a process of carrying the information to monitor the request message OIP the AS, the AS OIP The event listener report supplementary service information carried in the request message, in fact, regardless of which side of the listener object you are in a call, whether the calling party or the called party, all the S-CSCF to reach the listener objects and services, and the listen object request related message, the S-CSCF may when the request message carries the information on the monitor, the monitor request message to the AS in the iFC objects specified in the user configuration, listens while transmitting information to the AS, the S-CSCF sends a request message to another network entity untrusted domain , S-CSCF or as a network boundary IBCF NE, BGCF, I-CSCF, MGCF delete request listening information carried in the message. 特别地,如果监听对象是主叫方,接收到执法机构側发送的携带有监听数据的监听指示的网络接入单元可以在主叫方发送的 In particular, if the object is a calling party listens received carries the network access unit monitors the monitor data indicating that can be transmitted in the calling party side transmission law enforcement agencies

13消息中扩展携带上监听信息。 13 Extended message carries information on the monitor.

另外,图3所示的实施例是以请求消息携带监听信息为例的,实际应用中,也可以利用响应消息来携带监听信息。 Further, the embodiment shown in FIG. 3 is a listen request message carries the information as an example, the practical application, the response message may also be utilized to carry information monitor.

在图3所示的过程中,是由为监听对象服务的S-CSCF在SIP消息中插入和删除监听信息的,具体实现时,还可以在与监听对象相关的SIP消息到达为监听对象服务的LI-AS时,由LI-AS在SIP消息中扩展携带上监听信息。 In the process shown in FIG. 3, are inserted and deleted monitor information, the specific realization, can arrive at the object associated with the SIP message for the listening intercepted object and services in a SIP message to the S-CSCF serving the intercepted object LI-AS holds, the extension LI-AS in a SIP message carries the information on the monitor.

同样,图3仅示出OIP AS接收到SIP消息中携带的监听信息上报IRI的过程,事实上当携带监听信息的消息发送到信任域内的I-CSCF、 S-CSCF、AS、 BGCF、 MGCF、々某体网关、MRFP等网络实体时,这些网络实体都可以根据监听信息上报IRI到DF。 Similarly, FIG. 3 shows only the process of OIP AS receives a SIP message carries listening information reporting IRI, in fact, when carried listening information message to the I-CSCF trust domain, S-CSCF, AS, BGCF, MGCF, 々 when a media gateways, etc. the MRFP network entity, network entities may listen for reporting IRI according to the DF information.

以上仅描述了在SIP消息中携带合法监听信息进行传递的过程,下面描述具体如何在SIP消息中携带监听信息。 These are just describes the process of carrying the lawful interception of information in the SIP message is passed, the following specific description of how to carry monitor information in the SIP message.

首先,描述所携带的监听信息。 First, monitor the information carried. 在SIP消息中所携带的监听信息包括监听对象的标识,该标识可以是SIP统一资源标识符(URI)或者电话(tel)统一资源定位符(URL),也可以是描述消息中指定的某一方或多方是否被监听的标志。 Carried in the SIP message listener listening information includes an identifier of an object, the identifier may be a SIP uniform resource identifier (URI) or telephone (Tel) uniform resource locator (the URL), or may be specified in the message described either or flag parties being monitored. 监听信息可以进一步包括执法机构或监听中心的地址信息,该地址信息给出当前接收IRI和/或CC的地址,可以是一个可路由的URI,也可以是一个IP地址,当上报IRI和/或CC时,可以根据监听信息中包括的执法机构或监听中心的地址信息,上报至监听信息中指定的DF,该地址信息可以是DF2地址,用来描述接收监听对象IRI的地址;也可以是DF3地址,用来描述接收监听对象CC的地址;也可以是DF2地址和DF3地址的组合。 Listening information may further include address information or the law enforcement agency LEA, which gives the current address information received IRI and / or the CC of address may be the URI of a route, or may be an IP address, as reported by IRI and / or CC, the listener information may include address information of law enforcement agencies or monitoring center, the information reported to the monitor specified DF, the address information may be the address DF2, to describe the address of the received intercepted object IRI; may be DF3 address, for receiving the description of the object CC monitor address; address may be a combination DF2 and DF3 address. 监听信息还可以进一步包括密钥或证书,密钥或证书是确认和接收SIP消息中携带的监听信息的唯一标志,即只有当密钥或证书匹配时才确认监听信息正确和合法,并接收监听消息。 Listening information may further include a key or certificate, key or certificate is the only sign monitor information and receive confirmation message carries the SIP, that is only when the key or certificate when confirmation matching monitor information is correct and lawful, and receives monitor messages. 监听信息还可以进一步包括取消监听指示信息,当AS或其它参与监听对象会话的实体在接收到消息中携带的监听信息时,为避免每次重复传递可以将监听信息保存在本地,在这种情况下,如果监听对象被取消监听,那么AS或其它参与监听对象会话的实体根 Listening information monitor may further include a cancellation instruction information, when the AS objects or other entities participating listeners listening session information carried in the received message in order to avoid repeating each transfer can monitor information stored locally, in which case , the object is canceled if the listener listens, then the AS, or other entity involved in the root of the object listening session

14据监听信息中的取消监听指示信息删除保存在本地的监听对象的监听信息。 14 According monitor information indicating the cancellation listening delete information stored in the monitor information about the local listener object. 上述监听信息可以在任何SIP消息中携带。 Above monitor information can be carried in any SIP message.

在一次会话过程中,可以有一个以上的网元参与控制cc的上报,如可以在拜访域上报cc,也可以在归属域上报cc。 In the course of a session, there may be more than one network element involved in the control cc reporting, as can be reported in cc visited domain, it may be reported in cc home domain. 为了减少不同网元的多次重 To reduce the weight of multiple different network elements

复CC上报,从而避免媒体资源的浪费,在将CC上报给同一DF3的前提下,一般在一次会话过程中只进行一次CC上报处理。 CC complex report, in order to avoid wasting media resources, under the premise of the CC report to the same DF3, usually in one session only once during the reporting CC processing. 具体的实现方式可以是如下两种: Specific implementation may be the following two:

方式一是在上述的监听信息中只携带上报IRI的指示,不携带或删除掉上报CC的指示,或将上报CC的指示设置为"否"。 One way to monitor the information in the above report carries only an indication of IRI, do not carry or delete reporting instructions CC or CC will be reported to the instructions set to "no." 如在一次会话中,P-CSCF知道用户在拜访域已经被上报了CC,则在其发出的SIP消息中只携带上报IRI的指示,或者将上报CC的指示设置为否,这样,归属域的网元收到该SIP消息后,将不处理将CC上报。 As in one session, P-CSCF knows the user in the visited domain has been reported to the CC, the SIP message it sent carries only report instruction IRI, or will be reported to the CC indicator is set to NO, so that the home domain NE after receipt of the SIP message, it will not deal with the CC report. 当然,在实际应用中,并非仅限于拜访域上报后归属域不再上报,对于相反的过程,在归属域上报后拜访域不再上报,同样属于本发明的保护范围。 Of course, in practical application, is not limited to the home domain visited domain reported no report, the opposite process, in the home domain visited domain no longer report reported, also within the scope of the present invention. 类似的,还可以在监听信息中只携带DF2地址而不携带DF3地址,或删除掉DF3地址,或将DF3地址设置为无效等,这样,后续网元由于不知道DF3地址,或接收到的DF3地址为无效,就不能将CC上报。 Similarly, it can also carry information in listening only to carry DF3 DF2 address without an address, or deleted DF3 address, or the address to DF3 invalid, etc., so that subsequent network elements because they do not know DF3 address, or received DF3 address is invalid, it can not CC reported.

方式二是在上述的监听信息中携带CC上报完成指示,指示本次会话CC上报已经完成。 Second way is to carry the CC report complete indication, indicating that the session has been completed in the reporting CC monitor above information. 进一步的,CC上报完成指示还可以包括完成CC上报的网元和/或该CC上4艮对应的DF3地址。 Further, CC completion report indicating the completion may further include a reporting network element CC and / or the corresponding CC. 4 Burgundy DF3 address. 如在一次会话中,P-CSCF知道用户在拜访域已经被上报了CC,则在发出的SIP消息中携带CC上报完成指示,以及对应的DF3地址,这样,归属域的网元收到该SIP消息后,将判断前 As in one session, P-CSCF knows the user in the visited domain has been reported to the CC, CC carries the SIP message sent by the report indicating the completion, and the corresponding address DF3, so, the home network element receives the SIP domain after the message, whether the front

是否一致,若相同,则不再处理CC上报;若不相同,则向本网元对应的DF3地址上报CC。 Are the same, if the same, then the process is no longer reported by CC; if not the same, reports to the CC network element addresses corresponding to DF3. 比如当拜访域和归属域对应的DF3地址不一致时,即使在拜访域已经上报了CC,归属域也要处理CC上报。 For example, when inconsistent visited domain and the home domain corresponding DF3 address, even if the visit has been submitted to the CC field, we need to address the home domain CC reported.

在SIP消息中携带监听信息可以使用SIP头域携带,也可以使用SIP消 Listening information carried in the SIP message header field may be used to carry SIP, SIP message may also be used

15息体携带。 15 information carrying body. 使用SIP头域携带监听信息包括使用已有头域携带和扩展SIP消息头域携带,使用已有头域携带监听消息举例如下: Using a SIP header field carries information monitor comprising using existing extension header field carrying the SIP message header and carries, using an existing message header field carries the listener for example as follows:

SIP头域P-Charging-Function-Address用于传递计费功能地址的分配,S-CSCF在请求消息Invite到达时在请求中加入该消息头,并在该消息头中使用扩展参数携带监听信息,例如,用扩展参数li-id携带监听对象的标识tom@home.com,用扩展参凄t delivery-function携带DF地址df2@lea.com, SIP header field P-Charging-Function-Address allocated charging function for transmitting address, S-CSCF is added to the message header in the request arrives at the Invite request message, and using the extended parameter in the message carrying the information of the listener head, For example, objects carrying identification tom@home.com monitor with extended parameter li-id, extended with sad reference DF t delivery-function carrying address df2@lea.com,

P-Charging-Function-Address: P-Charging-Function-Address:

li-id=tom@home.com; delivery-function=df2@lea.com扩展SIP消息头域携带监听信息举例如下:P-LI: <sip:tom@home.com>; delivery-function=df2@lea.com该扩展SIP消息头域P-LI中携带表示监听对象的标识为tom@home.com; DF地址为df2@lea.com;或, li-id=tom@home.com; delivery-function=df2@lea.com extended SIP message header carries information listener for example as follows: P-LI: <sip: tom@home.com>; delivery-function = df2 @ the extension lea.com SIP message header that carry P-LI intercepted object identifier for tom@home.com; DF address df2@lea.com; or,

P-LI: orig; delivery-function=df2@lea.com P-LI: orig; delivery-function=df2@lea.com

上述P-LI头域中携带的是监听对象标志orig,表示消息发送源即主叫用户被监听,而具体的监听对象就是消息发送源的标识,可以取自From头域或P-Asserted-Identity头域等; Carrying the P-LI header field are intercepted object orig flag, a message indicating a transmission source of the calling subscriber is listening, the listener object is the specific identification message transmission source, or can be taken from the From header field P-Asserted-Identity header and the like;

或, or,

P-LI: dest; delivery-function-df2劍ea.com P-LI: dest; delivery-function-df2 sword ea.com

上述P-LI头域中携带的是监听对象标志dest,表示消息目的方即被叫用户被监听,而具体的监听对象就是消息目的方标识,可以取自Request-URI内容、To头域、P-Asserted-Identity头域或P-Called-Party-ID头域等。 Carrying the P-LI header field flag is intercepted object dest, i.e. a message indicating that the called destination user is listening, the listener object is a specific destination identification message, Request-URI content may be taken, To header, P or -Asserted-Identity header field P-Called-Party-ID header field and the like.

取消监听指示信息的示例如下: Examples cancel listening instructions are as follows:

P-LI: dest; cancel P-LI: dest; cancel

上述P-LI头域中携带的是监听对象标志dest和取消监听指示的标志cancel,表示消息目的方被取消监听。 Carrying the P-LI header field dest is intercepted object flag and a cancel flag indicating listener cancel, it indicates that the message destination is canceled listening. 密钥或证书的示例如下: Example key or certificate as follows:

16P腸LI: key- "6629fae49393a05397450978507c4efl" 16P intestine LI: key- "6629fae49393a05397450978507c4efl"

上述P-LI头域中携带的是监听信息的密钥或证书key值,参与监听对象会话的实体接收到携带监听信息的消息后,根据消息中携带的监听信息的密钥或证书key值,按照事先约定的算法或者其它的方式,确认消息中携带的监听信息的正确性和合法性,并根据监听信息进一步执行本发明中描述的处理。 Carrying the P-LI header field after listening key or certificate key value information, the entities involved in the session intercepted object receiving the message carrying the information of the listener, the listener key or certificate key value information carried in the message, accordance with an algorithm or other pre-agreed manner, confirm the correctness and validity of monitor information carried in the message, and further performs processing according to the present invention is described in the monitor information.

使用SIP消息体携带监听消息通常通过在SIP消息体中插入一个包括类型名称、子类型名称、所需参数和解码类型的多用途网络邮件扩展(MIME,Multipurpose Internet Mail Extensions )类型体来携带监听信息,并且该监听信息可以用扩展标记语言(XML)描述。 Using the SIP message body carries the message listener typically by inserting the SIP message body includes the name of the type, subtype name, parameters, and decoding the required type of Multipurpose Internet Mail Extensions (MIME, Multipurpose Internet Mail Extensions) type monitor body to carry information and the listener information may be described by the Extensible Markup language (XML).

以上参见图2和图3详细描述了在SIP消息中插入监听消息,传递给AS或其它参与监听对象会话的网元,并由AS或其它参与监听对象会话的网元上报IRI的过程,事实上,参与监听对象会话的其它网络功能实体,并不总是以SIP协议参与监听对象会话的,例如GPRS网关支持节点(GGSN,Gateway GPRS Support Node)、边界网关功能(BGF, Border GatewayFunction)、包括住宅网关和接入网关的网关等,都可以通过在与监听对象相关的非SIP协议消息中传递监听信息的方式获得监听信息,进而上报IRI和/或CC,这些非SIP协议消息可以是直径(Diameter)消息或H.248消息或公共开放策略服务协议消息(COPS, Common Open Policy Serviceprotocol)等。 Referring to Figure 2 above and described in detail in FIG. 3 inserted in the SIP message listening for messages transmitted to the AS or other objects listening session participating network element, by the AS, or other objects participating in the session monitor reports NE IRI process, in fact other network functional entities involved listening session objects, not always subject to the SIP protocol involved listening session, such as a gateway GPRS support node (GGSN, gateway GPRS support node), border gateway function (BGF, border GatewayFunction), including residential gateway and gateway access gateway, and the like, the listener can obtain information by listening transmitting information in a non-SIP protocol message object associated with the listener, and thus reporting IRI and / or the CC, these non-SIP protocol message may be a diameter (a diameter ) message or a message or H.248 protocol messages common open policy service (COPS, common open policy Serviceprotocol) and so on.

事实上,在图2所示的网络结构中,仅仅考虑了信令消息的传递,对于终端在进行通话时的通话内容,包括语音、视频等媒体流,根据终端的类型不同,是分别通过BGF、 GGSN或网关等功能实体接入网络的。 In fact, in the network structure shown in Figure 2, only the transmission of signaling messages considered, for the conversation when the terminal during a call, including voice, video and other media streams, according to the different types of terminals, respectively by BGF , GGSN or other network access gateway function entity. 具体参见图4,图4示出根据本发明实施例的涉及监听对象媒体流的合法监听网络逻辑结构。 Referring specifically to FIG. 4, FIG. 4 shows the logical structure of the network directed to a lawful interception target listener media stream according to embodiments of the present invention. 应用功能实体(AF),例如P-CSCF,或者互通边界控制功能(IBCF,Interconnection Border Control Function ),或者AGCF,才艮据信令消息确定终端通话媒体流的大小,并发送消息告知服务策略决策功能(SPDF, Service Application function entity (the AF), e.g. P-CSCF, or interworking border control function (IBCF, Interconnection Border Control Function), or the AGCF, Burgundy was determined according to the size of the terminal call signaling message media stream, and sends a message to tell the service policy decision function (SPDF, Service

17Policy Decision Function )或策略决策功能(PDF, Policy Decision Function ),由SPDF或PDF发送消息至BGF、 GGSN或网关,给终端分配合适的带宽。 17Policy Decision Function) or a policy decision function (PDF, Policy Decision Function), transmitted by a message to the SPDF or PDF BGF, GGSN, or gateway, the bandwidth allocated to the appropriate terminal. 由于BGF或者其它网关都是媒体网关(MG, Media Gateway)的一种,在这里,把BGF、网关等统称为媒体网关。 Since all gateways or other BGF A media gateway (MG, Media Gateway), where, the BGF, collectively referred to as gateway, the media gateway. AF与SPDF或PDF之间的接口协议为Diameter协议,传递Diameter消息;SPDF与媒体网关之间的接口协议为H.248协议,传递H.248消息;PDF与GGSN之间的接口协议为COPS协议,传递COPS消息。 Interface protocol between the AF and the PDF SPDF or a Diameter protocol, transmitting Diameter messages; SPDF interface protocol between the media gateway and the H.248 protocol, H.248 message transmission; interface protocol between the GGSN and the PDF of the COPS protocol , COPS message delivery.

在这种情况下,AF在发送给SPDF或PDF的Diameter消息中扩展携带监听信息将监听信息传递给SPDF或PDF,进一步由SPDF或PDF在H.248消息或COPS消息中扩展携带监听信息发送给BGF、 GGSN或网关,BGF、GGSN或网关对监听对象进行监听,由于终端通话的媒体流经过BGF、 GGSN或网关,所以BGF、 GGSN或网关不仅可以上报IRI还可以上报CC。 In this case, the AF carries extended listening information transmitting information to the monitor or PDF SPDF in the Diameter message to the SPDF or PDF, the PDF is further extended by the SPDF or the H.248 message or COPS message to send to the listener carries information BGF, GGSN or gateway, BGF, GGSN or gateway to monitor objects to monitor, because the terminal call media stream through BGF, GGSN or gateway, the BGF, GGSN or gateway can not only report the IRI may also be reported CC. 此外,类似地,对于通过AGCF接入的终端,可以由AGCF在与网关交互时,在H.248消息中携带监听信息给网关,网关根据H.248消息中的监听信息,上报IRI和/或CC给DF。 Further, similarly, for the access terminal through the AGCF, may be made AGCF when interacting with gateways, H.248 message carries the information to monitor the gateway, according to the monitor information in H.248 message, reporting IRI and / or CC to DF. 因此,在这里,与监听对象相关的消息包括Diameter消息、H.248消息和COPS消息,参与监听对象会话的网络功能实体为BGF、GGSN或网关。 Thus, here, associated with the message comprises a Diameter message listener objects, H.248 message and COPS message, the network function entity participating in the session is intercepted object BGF, GGSN or Gateway. MRFP也可以通过扩展携带监听信息的H.248消息获得监听信息。 MRFP monitor information can also be obtained by extending the H.248 message carries the listener information. 例如,当监听对象的会话需要使用MRFP上的资源时,媒体资源功能控制器MRFC通过H.248消息将监听信息传递给MRFP, MRFP根据H.248消息中的监听信息,上报IRI和/或CC给DF。 For example, when a listening session object requires resources on The MRFP, Media Resource Function Controller H.248 message by the MRFC information to monitor MRFP, MRFP according to the information of the listener in the H.248 message, reporting IRI and / or CC to DF.

从以上描述可以看到,监听信息可以进一步包括上报IRI和/或CC的指示,表明当前监听是否需要上报IRI和/或CC;还可以进一步包括DF地址,DF地址包括DF2地址和DF3地址,分别对应上报IRI的地址和上l艮CC的地址,DF2地址和DF3地址都可以是URI,也可以是IP地址。 Can be seen from the above description, the listener information may further include reporting indicator IRI and / or the CC, reporting that the current monitor whether IRI and / or CC; DF may further comprise an address, the address including DF DF2 DF3 address and address, respectively, IRI report corresponding to the address and the address of CC Gen l, DF2 and DF3 address may address a URI, or an IP address.

具体地,在H.248消息中扩展携带监听信息的举例如下: In particular, in the H.248 message carries extended listening information for example as follows:

要扩展携带监听信息,需要定义监听信息包,这里定义的监听信息包括监听信息包标识(ID)和属性,属性包括:监听对象标识,还可以进一步包 To monitor extension carries information necessary to define the packet monitor, where the listener listens includes information defining the packet identifier (ID) and attribute properties include: listening object identification, the packet may be further

18包括DF2地址和/或DF3地址,上报IRI和/或CC的指示、密钥或证书、取消监听指示信息等。 18 DF2 including address and / or DF3 address, reporting indicator IRI and / or CC, the key or certificate canceled monitor indication information. 其中,监听对象标识用来描述监听对象的用户身份标识, 可以是SIPURI,也可以是telURL; DF2地址用来描述监听对象IRI输出的地址,可以是URI,也可以是IP地址;DF3地址用来描述监听对象CC输出的地址,可以是URI,也可以是IP地址。 Wherein the listener listens to describe the object identifier of an object user identification, it may be the SIPURI, may be telURL; DF2 is used to describe the address output address IRI intercepted object, the URI may be, or may be an IP address; DF3 address for address Object description CC monitor output, either URI, can also be an IP address.

在Diameter消息中扩展携带监听信息,可以通过扩展Diameter的属性值对(AVP),使其在会话过程中携带监听信息来实现。 In the Diameter message carries extended listening information, by extending Diameter attribute value pair (the AVP), carrying the monitor so that information during the session to achieve. AVP包括属性名、 属性码、属性值的类型,具体的AVP格式中可以包含监听对象标识、DF2 地址和/或DF3地址等。 AVP includes an attribute name, attribute codes, the type of the attribute value of the specific AVP format may comprise intercepted object identifier, DF2 address and / or address DF3.

在COPS消息中扩展携带监听信息,可以通过扩展3GPP为PDF与GGSN之间的Go接口定义的策略信息库(PIB, Policy Information Base ), 例如,定义监听信息为COPS专有对象,包括监听对象标识、DF2地址和/ 或DF3地址等。 In COPS message carries extended listening information, Go interface may be defined between the GGSN and the PDF policy repository (PIB, Policy Information Base), for example, monitor information is defined by extending COPS 3GPP specific object, including the object identifier listening , DF2 address and / or address DF3. 监听信息专有对象在PDF发送给GGSN的消息中携带。 Monitor information proprietary object to the message carries the GGSN in PDF.

可以看到,在SIP消息、Diameter消息、H.248消息、COPS消息中传递的监听信息的内容是一致的,不同之处仅在于消息的格式不同。 It can be seen in the SIP message, Diameter messages, H.248 message, the contents of monitor information transmission COPS message is the same, except that only a message of a different format.

以上参照附图结合具体实施例描述了本发明传递合法监听信息的过程, 从以上描述可以看到,本发明所提供方法的核心在于:在与监听对象相关的消息中扩展携带监听信息,在发送消息的同时传递监听消息给参与监听对象会话的网络功能实体,使得网络功能实体可以根据传递来的监听信息对监听对象进行监听,向执法机构侧上报IRI和/或CC。 Process of the present invention in conjunction with the accompanying drawings lawful interception information transmitted to specific embodiments described, can be seen from the above description with reference to the foregoing, the present invention provides a method wherein the core: a message listener objects associated with the extended carrying listening information transmitting message while listening to the message delivery function entity participating in the network session intercepted object, so that the network can listen to the functional entity objects based on the listener listens to the transmission of information, reporting IRI and / or the CC to law enforcement agencies side. 因此,这种方法可以降低数据泄密的可能性,同时减轻执法机构侧的工作负担。 Thus, this method can reduce the possibility of leakage of the data, while reducing the burden of the side of law enforcement agencies.

以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 The above are only preferred embodiments of the present invention but are not intended to limit the scope of the present invention.

19 19

Claims (18)

1、一种传递合法监听信息的方法,其特征在于,该方法包括:A、在与监听对象相关的消息中携带监听信息,发送给参与监听对象会话的网络功能实体;B、网络功能实体根据收到的监听信息对监听对象进行监听,并向执法机构侧上报监听相关信息IRI和/或通信内容CC,其中,步骤A中所述消息为呼叫会话SIP消息,所述在与监听对象相关的消息中携带监听信息为:服务呼叫会话控制功能S-CSCF在与监听对象相关的SIP消息中携带监听信息;或者,S-CSCF将与监听对象相关的SIP消息发送给合法监听业务应用服务器LI-AS,LI-AS在SIP消息中携带上监听信息,再发送给S-CSCF。 1. A method for lawful interception of the information transmission, wherein the method comprises: A, carrying the information in the message relating to listening intercepted object, the transmission function entity to participate in the network session intercepted object; B, according to the network function entity listener listens to the received information object monitor, and report the interception related information IRI and / or law enforcement agencies content of communication CC side, wherein in the step a call session message is a SIP message, the listener in a related object listening message carries information: serving call session control function S-CSCF carries the information related to the listener listening SIP message object; Alternatively, S-CSCF associated with the SIP message listener objects to the lawful interception service application server LI- AS, LI-AS carries information on the monitor in the SIP message, and then sent to the S-CSCF.
2、 根据权利要求1所述的方法,其特征在于,所述网络功能实体为应用服务器AS、问询呼叫会话控制功能I-CSCF、互通边界控制功能IBCF、出口网关控制功能BGCF、媒体网关控制功能MGCF、媒体网关、媒体资源功能处理器MRFP之一或任意组合。 2. The method according to claim 1, wherein said network functional entity is the AS application server, inquiry call session control function I-CSCF, IBCF Interworking Border Control Function, the BGCF Breakout Gateway Control Function, a Media Gateway Control function MGCF, media gateway, media resource function processor MRFP one or any combination.
3、 根据权利要求1所述的方法,其特征在于,当监听对象为主叫方时,所述在与监听对象相关的消息中携带监听信息为:网络接入单元在与监听对象相关的SIP消息中携带监听信息。 3. The method according to claim 1, wherein, when the calling party intercepted object, the message carrying the information related to the listener listens object is: a network access unit associated with the intercepted object SIP message carries the listener information.
4、 根据权利要求1所述的方法,其特征在于,在所述步骤B之后,该方法进--步包括:网络接入单元、S-CSCF、 I-CSCF、 IBCF、 BGCF或MGCF在将SIP消息发往非信任域网络实体时,删除SIP消息中携带的监听信息。 4. The method according to claim 1, wherein, after said step B, and the method proceeds - further comprising: a network access unit, S-CSCF, I-CSCF, IBCF, BGCF, or when the MGCF SIP message sent to untrusted domain network entity, to remove listeners SIP information carried in the message.
5、 根据权利要求l、 2、 3或4所述的方法,其特征在于,所述在SIP消息中携带监听信息包括:利用SIP头域携带监听信息或利用SIP消息体携带监听信息。 5, according to claim L, method 2, 3 or 4, wherein said carrier comprises a listening information in the SIP message: using SIP header field carries information monitor or monitor using a SIP message body carries the information.
6、 根据权利要求1所述的方法,其特征在于,步骤A中所述消息为直径Diameter消息、或H.248消息、或公共开;j文策略服务协议消息COPS消息。 6. The method according to claim 1, wherein in step A the message is a diameter of the Diameter message, or H.248 messages, or public open; J text message Policy Service COPS protocol message.
7、 根据权利要求6所述的方法,其特征在于,所述消息为Diameter消息时,所述网络功能实体为服务策略决策功能SPDF或策略决策功能PDF;所述消息为H.248消息时,所述网络功能实体为媒体网关或MRFP;所述消息为COPS消息时,所述网络功能实体为GPRS网关支持节点GGSN。 7. The method of claim 6, wherein the message is a Diameter message, said network functional entity is a service policy decision function SPDF or a policy decision function PDF; H.248 message when the message is, said network functional entity is a media gateway or the MRFP; COPS when the message is a message, the network functional entity is a gateway GPRS support node GGSN.
8、 根据权利要求6所述的方法,其特征在于,所述步骤A包括:所述消息为Diameter消息时,应用功能AF实体在Diameter消息中携带监听信息发送给服务策略决策功能SPDF或策略决策功能PDF;所述消息为H.248消息时,SPDF或PDF或MGCF在H.248消息中携带监听信息发送给媒体网关,或者,媒体资源功能控制器MRFC在H.248消息中携带监听信息发送给MRFP;所述消息为COPS消息时,PDF在COPS消息中携带监听信息发送给GGSN。 8. The method of claim 6, wherein said step A comprises: when the message is a Diameter message, an application function AF entity carries the service policy decision function SPDF listening or sending information to the policy decision in the Diameter message PDF function; when the message is an H.248 message, the SPDF or PDF or MGCF within an H.248 message carrying the information to monitor the media gateway, or a media resource function controller carries MRFC monitor information transmitted in H.248 messages the MRFP to; COPS message when the message is, PDF COPS message carries the information to the monitor GGSN.
9、 根据权利要求8所述的方法,其特征在于,所述应用功能实体为代理呼叫会话控制功能实体P-CSCF或互通边界控制功能实体IBCF或接入网关控制功能AGCF。 9. The method of claim 8, wherein the application function entity is a proxy call session control function P-CSCF entity or IBCF Interworking Border Control Function entity, or an access gateway control function AGCF. . .
10、 根据权利要求l、 2、 3、 4、 5、 6、 8或9所述的方法,其特征在于,所述监听信息包括:监听对象的标识。 10, according to claim l, 2, 3, 4, 5, 6. The method of claim 8 or 9, wherein the monitor information comprises: identifying the object of listening.
11、 根据权利要求10所述的方法,其特征在于,所述监听对象的标识由SIP统一资源标识符、电话统一资源定位符、 一方或多方被监听的标志之一或任意組合构成。 11. The method of claim 10, wherein identifying the listening object by the SIP uniform resource identifier, a telephone uniform resource locator, one or more parties to be monitored by one of the signs or any combination thereof.
12、 根据权利要求IO所述的方法,其特征在于,所述监听信息进一步包括:上报IRI和/或CC的指示、DF地址、密钥或证书、取消监听指示之一或任意组合。 12. The method of claim IO, wherein said monitor information further comprises: reporting indicator IRI and / or the CC, DF address, key or certificate, or cancel one sense instructing any combination thereof.
13、 根据权利要求12所述的方法,其特征在于,所述DF地址包括DF2地址和/或DF3 i也址。 13. The method of claim 12, characterized in that said address includes DF2 DF address and / or address is also DF3 i.
14、 根据权利要求13所述的方法,其特征在于,所述网络功能实体上报CC具体包括:一个网络功能实体向执法机构侧上报CC后,指示后续的网络功能实体不必再次上报所述CC。 14. The method of claim 13, wherein said network functional entity CC reporting comprises: a network function after the CC entity reports to law enforcement side, indicating that the subsequent network functions need not report the CC entity again.
15、 根据权利要求14所述的方法,其特征在于,所述指示后续网络功能实体不必再次上报CC的方法包括:所述一个网络功能实体在监听信息中删除上报CC的指示,或将上报CC的指示设置为否;则所述后续网络功能实体接收到所述监听信息后,不再上报cc。 15. The method of claim 14, wherein said network functional entity necessarily indicate subsequent CC again reported the method comprising: in a network functional entity monitor information report instruction to remove a CC or CC will be reported No indication is provided; then the subsequent network function entity receiving the monitoring information, not reported cc.
16、 根据权利要求14所述的方法,其特征在于,所述指示后续网络功能实体不必再次上报CC的方法包括:所述一个网络功能实体在监听信息中删除DF3地址,或将DF3地址设置为无效;则所述后续网络功能实体接收到所述监听信息后,不再上报CC。 16. The method of claim 14, wherein said network functional entity necessarily indicate subsequent CC again reported the method comprising: in a network functional entity monitor information deleted DF3 address, or the address is set to DF3 invalid; then after the subsequent network function entity receiving the monitoring information, not reported CC.
17、 根据权利要求14所述的方法,其特征在于,所述指示后续网络功能实体不必再次上报CC的方法包括;所述一个网络功能实体将监听信息中的CC上报完成指示设置为是;则所述后续网络功能实体接收到所述监听信息后,不再上报CC。 17. The method of claim 14, wherein said network functional entity necessarily indicate subsequent CC again reported the method comprising; a functional entity to a network monitor information CC is set to indicate complete report; the after the subsequent network function entity receiving the monitoring information, not reported CC.
18、 根据权利要求17所述的方法,其特征在于,所述CC上报完成指示还进一步包括:完成上报CC的网元和/或CC上报对应的DF3地址。 18. The method of claim 17, wherein the completion report indicating CC further comprising: reporting the completion of the CC network element and / or the address of the corresponding CC DF3 reported.
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