CN103200151A - Method and system of policy and charging control (PCC) conversation binding in network address translation (NAT) deployment environment and policy and charging rule function (PCRF) - Google Patents

Method and system of policy and charging control (PCC) conversation binding in network address translation (NAT) deployment environment and policy and charging rule function (PCRF) Download PDF

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CN103200151A
CN103200151A CN2012100011261A CN201210001126A CN103200151A CN 103200151 A CN103200151 A CN 103200151A CN 2012100011261 A CN2012100011261 A CN 2012100011261A CN 201210001126 A CN201210001126 A CN 201210001126A CN 103200151 A CN103200151 A CN 103200151A
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address
pcrf
ue
nat
session
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CN2012100011261A
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Chinese (zh)
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甘亮
尹瑶瑶
张婉鑫
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中国移动通信集团公司
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Abstract

The invention discloses a method of policy and charging control (PCC) conversation binding in a network address translation (NAT) deployment environment. The method includes the following steps: a policy and charging rule function (PCRF) receives a first address of user equipment (UE) reported by a policy and charging enforcement function (PCEF) and a second address reported by an application function (AF); conversation between the PCEF and the PCRF and conversation between the AF and the PCRF are bound through judging whether the first address and the second address are the same or not; when the first address and the second address are not the same, an address mapping translation relation of the UE established by NAT equipment is obtained; according to the second address and a mapping relation of the address mapping translation relation, a third address corresponding to the second address is inquired; and the first address and the third address are compared to judge whether to be the same or not to bind the conversation between the PCEF and the PCRF and the conversation between the AF and the PCRF. The method can ensure that the PCRF carries out conversation binding in the NAT environment. Besides, the invention further discloses a system of the PCC conversation binding in the NAT deployment environment and the PCRF.

Description

—种NAT部署环境下的PCC会话绑定的方法、系统和PCRF - Method PCC bound to the session under the kinds of NAT deployment environment, systems and PCRF

技术领域 FIELD

[0001] 本发明涉及一种PCC会话绑定的方法,具体来说,该方法应用于NAT部署环境下,属于网络通信领域。 [0001] The present invention relates to a PCC session binding, specifically, the method is applied NAT deployment environment belongs to the field of network communication.

背景技术 Background technique

[0002] PCC(Policy and Charging Control,策略计费控制)架构是下一代核心网演进SAE (System Architecture Evolution)项目的QoS (Quality of Service,业务质量)保障机制,其特征是以业务流为粒度、高度机制的端到端的QoS方案,其中,通过该架构可以使得网络检测到不同的业务流,并针对业务流实现QoS控制,计费计等需求。 [0002] PCC (Policy and Charging Control, policy and charging control) QoS architecture is the next-generation core network evolution SAE (System Architecture Evolution) project (Quality of Service, Quality of Service) protection mechanism, which is based on traffic flow granularity , the height of end to end QoS scheme mechanism, which enables the network architecture by which detect different traffic streams and to achieve QoS control requirements, the meter for other traffic flow.

[0003] 图1是现有技术中PCC组网架构的示意图; [0003] FIG. 1 is a schematic diagram PCC prior art network architecture;

[0004] 如图1所示,所示PCC架构,包括以下几个功能实体:AF(Application Function,应用功能实体)、PCRF (Policy and Charging Rule Fuction,策略和计费控制单兀)、PCEF(Policy and Charging Enforcement Function,策略和计费执行单兀)、BBERF (Bearing Binding and Event Report Function,承载绑定及事件报告功能实体)、SPR(Subscription Profile Repository,用户属性存储器)、OCS (Online ChargingSystem,在线计费系统)和OFCS (Off line Charging System,离线计费系统)。 [0004] 1, as shown in the PCC architecture, including the following functional entities: AF (Application Function, application function entity), PCRF (Policy and Charging Rule Fuction, a policy and charging control unit Wu), the PCEF ( policy and charging Enforcement function, policy and charging Enforcement single Wu), BBERF (bearing binding and event report function, bearer binding and event reporting function entity), SPR (Subscription Profile Repository, user attribute memory), OCS (Online ChargingSystem, OCS) and the OFCS (Off line charging system, OFCS).

[0005]其中,PCRF (Policy and Charging Rule Function,策略和计费控制单兀)是QoS规则的集中决策点,其决策的输入来源于AF(Application Function,应用功能实体)的Rx接口提供的业务信息(业务流描述、业务流带宽需求、业务流媒体类型、业务的ID)、用户ID及SPR中包含的用户签约信息、本地配置的运营商策略,PCRF生成授权QoS规则后向PCEF(Policy and Charging Enforcement Fucntion,策略和计费执行单兀)下发,并由PCEF根据授权QoS规则进行策略执行。 [0005] wherein, PCRF (Policy and Charging Rule Function, Policy and charging control unit Wu) is a centralized decision point QoS rules, making its input from AF (Application Function, AF entity) interface provides the service Rx after the information (traffic descriptor, traffic flow bandwidth requirements, traffic flow media type, service ID), user of the user ID and the SPR contains subscription information, locally configured operator policy, the PCRF generates an authorization QoS rules to the PCEF (policy and issued charging Enforcement fucntion, policy and charging Enforcement single Wu), by the PCEF according to the authorization policy enforcement QoS rules.

[0006] 3GPP网络下,PCRF生成授权QoS规则后向PCEF (在LTE下由P-GW实现,在2G/3G下由GGSN实现)下发,并由PCEF根据授权QoS规则进行策略执行;在非3GPP网络下(如WLAN、Wimax),PCRF生成授权QoS规则后向BBERF下发,并由BBERF根据授权QoS规则进行策略执行。 [0006] Under the 3GPP network, the PCRF generates the authorized QoS rule (LTE achieved at the P-GW, in the 2G / 3G realized by the GGSN) to the PCEF issued by the PCEF to perform the authorized QoS policy rules; non under the 3GPP network (e.g. WLAN, Wimax), PCRF generates the authorized QoS rules to the BBERF sent, by BBERF the authorization policy enforcement QoS rules.

[0007] QoS规则主要包括2部分内容:业务流的描述及相关的QoS参数。 [0007] QoS rule includes 2 parts: a description of traffic flow and associated QoS parameters. 其中,所述QoS参数主要包括ARP (用于决定承载资源获取的优先级)、QCI (表征转发优先级、丢包率、误码率等质量要求)及带宽需求。 Wherein the QoS parameters include the ARP (used to determine the priority of the bearer resource acquisition), a QCI (Quality requirements characterizing forwarding priority, packet loss rate, bit error rate, etc.), and bandwidth requirements.

[0008] 基于PCC架构,在UE初始附着网络时,建立用户终端与网络侧之间的IP-CAN会话,UE基于被建立的IP-CAN会话,开展自己的业务。 [0008] Based on PCC architecture, when the UE attached to the network initially establish a user terminal and the IP-CAN session between the network side, UE-based IP-CAN session is established, to carry out their business. 参见图2。 See Figure 2.

[0009] 根据图2和图3,对上图的流程简要描述如下: [0009] According to FIG. 2 and FIG. 3, the flow chart for briefly described as follows:

[0010] 步骤301至302 =PCEF收到UE发送的IP-CAN会话建立请求消息(Gx接口,采用了Diameter协议),请求PCRF下发该UE的默认的PCC规则,其中,为方便表达,称PCEF与PCRF之间的会话为会话一。 [0010] Step 301 setup request message (Gx interface, using the Diameter protocol) to 302 = PCEF receives IP-CAN session sent by the UE, send the default PCC rules the PCRF at the request of the UE, wherein, for the convenience of expression, said session between the PCEF and the PCRF is a session.

[0011] 在上述流程中,要求在步骤302或步骤310之后(未在上图中体现,用于当步骤302时,PCEF无法获知UE的地址的场景下)提供UE的地址至PCRF。 [0011] In the above flow, step 302, or after the required step 310 (not shown in the figure above embodiment, when step 302 is used, the PCEF scenario can not know the address of the UE) to provide the address of the UE PCRF. 在步骤302中还需携带UE的用户标识(MSI或MSISDN)。 In step 302 it needs to carry the user identity of the UE (MSI or MSISDN).

[0012] 上图所示流程所建立的IP-CAN会话建立了一条UE与PCEF之间的缺省承载,基于会话一中建立的该缺省承载,UE可发起业务请求,例如发起登录请求或IMS Invite请求 [0012] the flow shown in FIG established IP-CAN session is established default bearer between a UE and the PCEF, the default session established based on a bearer, UE may initiate a service request, such as initiating a login request or IMS Invite request

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[0013] 此外,为对UE将开展的业务进行控制,需要针对UE所请求的业务制定合适的PCC规贝U。 [0013] In addition, in order to control the business UE to be carried out, the need to develop appropriate PCC rules for the UE Tony U. requested service 因此,在PCC架构下,还需要对UE的业务进行控制,其中,下图是PCC架构下对UE的业务控制流程图。 Thus, at the PCC architecture is also necessary to control the operations of the UE, wherein, the traffic is a control flowchart of FIG UE under the PCC architecture.

[0014] 该流程简要说明如下: [0014] The procedure briefly described as follows:

[0015] 步骤401至步骤403: [0015] Step 401 to step 403:

[0016] AF被触发后,定义UE的业务信息,将UE的业务信息通过Rx接口消息(AAR消息)发送给PCRF,发起AF与PCRF之间的会话。 [0016] After the AF is triggered, the UE service information is defined, the UE transmits service information to the PCRF via the Rx interface message (AAR message), initiates a session between the AF and the PCRF.

[0017] 其中,UE的业务信息可包括UE的网络地址、网络标识、业务数据流描述信息、UE的标识(MSI或MSISDN)等等。 [0017] wherein the UE service information may include a network address of the UE, network identification, traffic data stream description information, the UE identifier (MSI or MSISDN) and the like. 且为表达方便,可称AF与PCRF之间的会话为会话二。 For expression and convenience, it may be called a session between the two AF for the session and the PCRF.

[0018] 步骤404、PCRF收到AF发来的AAR消息后,存储其中UE的业务信息,PCRF若没有存储用户签约数据,则执行步骤405 ;否则,执行步骤407。 After [0018] Step 404, PCRF receives AAR message sent by the AF, where the UE stores the service information, the PCRF when the subscription data is not stored, step 405 is executed; otherwise, step 407 is executed. 步骤405至步骤406 =PCRF向SPR发送请求用户签约数据的请求消息;SPR收到该请求消息后,向PCRF返回用户签约数据。 Step 405 to step 406 = PCRF sends a request message requesting the user subscription data to SPR; SPR after receiving the request message and returns the user subscription data to the PCRF.

[0019] 步骤407至步骤409 =PCRF根据会话二中AF发来的UE的网络地址,与会话一中收到的PCEF发来的UE的网络地址, [0019] Step 407 to step 409 = PCRF according to the session sent by the AF in the two network address of the UE, the PCEF received in a session sent by the network address of the UE,

[0020] 或通过会议二中发来的UE的用户标识与会话一中收到的PCEF发来的UE的用户标识(由于AF并不一定获知UE的用户标识-尤其是在第三方业务场景下一通常采用第一种方案)进行会话一与会话二的绑定,绑定成功后,PCRF制定并存储PCC规则,向AF发送表示会话绑定成功的响应,进而完成整体过程。 PCEF user identity received in a session [0020] or by the meeting of two sent to the UE sent by the user of the UE identity (user since the AF does not necessarily know the identity of the UE - particularly in third-party business scenario usually the first option a) bound to a conversation session two, the binding is successful, the PCRF stores the PCC rule and develop, transmits to the AF binding response indicates successful session, thereby completing the whole process.

[0021] 但是,根据申请号为200710165713.3的发明专利申请所说明的:由于在UE与TON网络及AF之间通常部署了NAT设备,导致了AF(通常部署于业务平台)通常无法获知UE的私网地址(NAT之前),而向PCRF提供了UE的公网地址(NAT之后的),而在会话一中,PCEF (在LTE中具体为P-GW,其负责UE的网络地址分配,通常为私网地址)上报至PCRF的UE地址为私网地址(NAT之前),从而导致了会话绑定的失败。 [0021] However, according to the illustrated Patent Application No. 200710165713.3 invention: Since TON between the UE and the network and NAT devices is usually deployed AF, AF leads (usually deployed in the service platform) can not generally know that the UE private network address (before NAT), is provided to the PCRF a public network address of the UE (behind a NAT), while in the session a in the PCEF (in particular P-GW, the network address assignment responsible for the UE in the LTE, usually private network address) of UE reported to the PCRF address private address (before NAT), which led to the failure bound to the session.

[0022] 图4是一种最为普遍的NAT部署环境。 [0022] FIG. 4 is one of the most common NAT deployment environment. 如图所示,NAT通常部署于P-GW之后的防火墙上,有该NAT设备实现一个/少数公网地址代理多个UE私网地址的方案。 As shown in FIG, NAT firewall is typically deployed on after the P-GW, which has a device to implement NAT / minority public address of the proxy UE plurality of private network address scheme.

[0023] 为实现业务平台(AF)与UE间的数据传输,AF必须且仅需知道该UE用于数据传输的私网地址/端口经NAT转换后的公网地址/端口,然而,AF并不一定知道UE的私网地址/端口。 [0023] In order to achieve the service platform (AF) and the data transmission between the UE, and the AF must only know the public network address of the private network address of the UE for data transmission / port via the NAT / port, however, the AF and UE may not know the private network address / port. 在点对点通信时,通信的另一方也仅需要知道对端的公网地址和端口即可。 In the point to point communication, the other party of communication is only necessary to know the public IP address and port on the peer. 因此,通常AF在会话中会填写UE的公网地址/端口,从而导致会话一与二无法绑定。 Therefore, AF will usually fill UE public address / port in the session, resulting in a conversation with two not binding.

[0024] 在中国专利申请号:200710165713.3的发明专利申请中,为克服现有技术的上述缺点,公开了一种技术方案:AF向PCRF上报所获知的UE的所有网络地址(包括公网地址和私网地址、甚至包括中继地址),从而实现会话一与二的绑定。 [0024] Chinese patent application number: 200710165713.3 Patent Application of the invention in order to overcome the above disadvantages of the prior art, discloses a technical solution: AF to the PCRF reports all the network address of the UE is known (including a public network address and private network address, the relay even address), the session in order to achieve a binding-two. 为此,200710165713.3的发明专利申请要求UE向AF提供上述所有网络地址信息,具体为: For this purpose, the patent application 200710165713.3 UE is required to provide all of the above network address information to the AF, specifically:

[0025] UE在SDP的扩展字段中携带自己的上述所有网络地址;[0026] UE在SIP消息的Via字段填写自己的上述所有网络地址; [0025] UE carries its own all the network address extension field of the SDP; [0026] UE fill all their network addresses in the Via field of the SIP message;

[0027] AF从上述UE发起的消息中提取上述所有网络地址信息。 [0027] AF extracts the information from all network addresses of the UE initiating message.

[0028] 上述现有技术存在以下缺点: [0028] The above-described prior art has the following disadvantages:

[0029] 第一,要求UE提供所有的网络地址信息,对UE提出了较高的技术要求,且有些场景,例如,在NAT穿越场景下由网络设备向NAT设备发起地址映射请求,UE自己并不知道自己的公网地址; [0029] First, the UE is required to provide all of the network address information, the UE proposed high technical requirements, and some scenes, for example, in the address mapping scenario NAT traversal request by the network device to initiate a NAT device, and its own UE I do not know his public addresses;

[0030] 第二,涉及了(无PCC网络下)本已正常工作的存量终端/客户端的改造,工作量较大; [0030] Second, to the (network without PCC) This known working stock of the terminal / client transformation, larger workload;

[0031] 第三,中国专利申请号200710165713.3的发明专利申请提供的两种UE提供所有地址信息的方法在实际部署可能无法工作:在实际部署MS/SIP网络时,运营商通常在自己网络的边缘部署SBC设备,以实现对业务消息的全代理及媒体流的全代理(此时,SBC会将SIP消息的源地址替换,并将SDP消息中地址进行替换),例如Via字段在过SBC时会被替换为经SBC (NAT)后的公网地址,,从而导致该字段无法准确传递至AF。 Methods [0031] Third, the Chinese patent application No. 200710165713.3 of invention patent of two types of UE provides all the address information may not work in the actual deployment: in the actual deployment of MS / SIP network, operators typically own the network edge SBC deployment apparatus, in order to achieve full-service message to the proxy agent and the whole media stream (in this case, the SIP message SBC will replace the source address, and the address replacement SDP message), the Via field in the past, for example, SBC will It is replaced by the public network address SBC (NAT) ,, thereby causing the field can not be accurately transmitted to the AF.

[0032] 第四,中国专利申请号200710165713.3的发明专利要求了UE采用了SIP/SDP协议,而该协议为文本型协议,在手机终端上使用较少。 [0032] Fourth, Chinese Patent Application No. 200710165713.3 of patent claims UE using SIP / SDP protocol, while the protocol is a text-based protocol, in the mobile terminal to use less.

发明内容 SUMMARY

[0033] 本发明针对现有技术的缺点,提供了一种能够可靠地绑定会话一和会话二的方法,具体来说,本发明所采取的技术方案如下面所描述: [0033] The present invention addresses shortcomings of the prior art by providing a method capable of reliably bind a session and session II, specifically, the technical solution by the present invention as described below:

[0034] 一种NAT部署环境下的PCC会话绑定方法,包括: [0034] PCC session binding method in a NAT deployment environment, comprising:

[0035] PCRF接收PCEF上报的UE的第一地址以及AF上报的第二地址; [0035] PCRF reported by the PCEF receives the first address of the UE and a second address reported by AF;

[0036] 根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话;其中,当所述第一地址和第二地址不相同时, [0036] The first and second address whether the same binding session between PCRF and PCEF and the PCRF and the AF; wherein, when said first and second address are not identical,

[0037] 获取NAT设备所创建的UE的地址映射转换关系; [0037] UE NAT devices get created address mapping conversion relationship;

[0038] 根据所述第二地址和所述地址映射转换关系中的映射关系,查询与第二地址所对应的第三地址; [0038] The mapping relationship between the address and the second address conversion mapping relationship, the second address and the third address of the query corresponding to;

[0039] 比较第一地址与第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 [0039] comparing the first address and the third address is the same to bind session between PCRF and PCEF and the PCRF and the AF.

[0040] 其中,优选的方法是,所述UE的地址映射转换关系是UE的私网地址和端口以及UE的公网地址和端口之间的映射关系。 [0040] wherein preferred method is the conversion of the UE address mapping is a mapping relationship between a private network and public network addresses and port addresses and port UE UE.

[0041] 进一步地,优选的是,所述UE的第二地址是UE的私网地址或者UE的公网地址。 [0041] Further, it is preferable that the second address is a private network address of the UE or the UE public network address of the UE.

[0042] 本实施例采取了上述技术方案后,能够在引入PCC架构以后,可以确保PCRF准确地在NAT环境下进行PCEF与PCRF以及AF与PCRF之间的会话绑定,进而提供业务流所需的QoS保障,具有较好的技术效果。 After [0042] The present embodiment adopted the above technical solutions, it is possible after the introduction of PCC architecture ensures PCRF accurately bound to the session between the PCRF and the PCEF and the PCRF and AF in a NAT environment, thereby providing the desired traffic flow QoS guarantee, has better technical effect.

[0043] 此外,本发明还公开了一种NAT部署环境下的PCC会话绑定系统,包括: [0043] Further, the present invention also discloses a system PCC session binding at a NAT deployment environment, comprising:

[0044] PCEF,用于向PCRF上报UE的第一地址; [0044] PCEF, the first address for the UE to report to the PCRF;

[0045] AF,用于向PCRF上报UE的第二地址; [0045] AF, a second address for the report of the UE to the PCRF;

[0046] NAT设备,用于创建并向PCRF提供UE的地址映射转换关系; [0046] NAT device, provided for creating a PCRF address of the UE and mapping conversion relation;

[0047] PCRF,用于根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话;其中,当所述第一地址和第二地址不相同时, [0047] PCRF, according to whether the first and second address identical binding session between the PCRF and the PCEF and the PCRF and the AF; wherein, when said first and second address are not identical,

[0048] 获取NAT设备所创建的UE的地址映射转换关系; [0048] UE NAT devices get created address mapping conversion relationship;

[0049] 根据所述第二地址和所述地址映射转换关系中的映射关系,查询与第二地址所对应的第三地址; [0049] The mapping relationship between the address and the second address conversion mapping relationship, the second address and the third address of the query corresponding to;

[0050] 比较第一地址与第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 [0050] comparing the first address and the third address is the same to bind session between PCRF and PCEF and the PCRF and the AF.

[0051 ] 本发明采取了上述技术方案以后,通过NAT设备或者数据网络设备和PCRF之间接口和查询,能够实现本发明所要保护的在NAT部署环境下的PCC会话绑定的技术目的,具有较好的技术效果。 [0051] The present invention takes the above technical solution then, through a NAT device or data between the network device and the PCRF interfaces and queries can be achieved according to the invention to be protected under PCC session binding NAT deployment environment technical purpose, with relatively good technical effect.

[0052] 此外,本发明还公开了一种PCRF,包括: [0052] Further, the present invention also discloses a the PCRF, comprising:

[0053] 信息接收单元,用于接收PCEF上报的UE的第一地址和AF上报的UE的第二地址; [0053] The information receiving means for receiving a second address of the UE reported by the PCEF to the first address of the UE and the AF reported;

[0054] 第一会话绑定单元,用于根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话; [0054] The binding unit of the first session, a session between the PCEF and the PCRF, and the PCRF AF and the first and second address whether the same binding;

[0055] 转换关系接收单元,用于获取NAT设备所创建的UE的地址映射转换关系; [0055] The conversion relationship between the receiving unit, configured to obtain an address created equipment UE NAT mapping conversion relation;

[0056] 地址转换单元,用于在第一会话绑定单元绑定会话失败后,根据所述第二地址和所述地址映射转换关系的映射关系,查询与第二地址所对应的第三地址; [0056] The address translation unit, the third address for the first session after the session fails to bind the binding unit, the second address according to the mapping relationship and mapping said address conversion relation, the query corresponding to the second address ;

[0057] 第二会话绑定单元,用于根据第一地址与第二地址或第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 [0057] The second session binding unit according to the first or the second address and the third address is the same address to bind session between PCRF and PCEF and the PCRF and the AF.

[0058] 本发明采取了上述技术方案以后,通过PCRF的设计,实现了在NAT部署环境下进行PCC会话绑定的技术效果,进而,通过PCRF对PCEF与PCRF以及AF与PCRF之间的会话绑定关系,能够进一步地为业务提供QoS保障的目的。 [0058] The present invention takes the above technical solution after the PCRF by design, to achieve a technical effect in the PCC session binding NAT deployment environment, and further, by tying session between PCRF and PCEF and the PCRF and the PCRF AF given relation, we can further guarantee QoS for business purposes.

[0059] 本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。 [0059] Other features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or learned by practice of the present invention. 本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。 The objectives and other advantages of the invention may be realized and attained by the written description, claims, and drawings structure particularly pointed out.

附图说明 BRIEF DESCRIPTION

[0060] 以下结合附图和具体实施例来对本发明进行详细的描述,以使得本发明的上述优点更加明确。 [0060] conjunction with the accompanying drawings and the specific embodiments described in detail of the present invention, so that the above-described advantages of the present invention more clearly.

[0061] 图1是现有技术中PCC架构的示意图; [0061] FIG. 1 is a schematic diagram of the PCC architecture in the prior art;

[0062] 图2是现有技术PCEF和PCRF之间的会话一的建立示意图; [0062] FIG. 2 is a schematic diagram of establishing a session between the PCEF and the PCRF prior art;

[0063] 图3是现有技术中AF和PCRF之间的会话二的建立示意图; [0063] FIG. 3 is a schematic view of the prior art to establish a session between the AF and the PCRF II;

[0064] 图4是现有技术中NAT部署环境下的系统结构示意图; [0064] FIG. 4 is a schematic diagram of a system configuration in the prior art NAT deployment environment;

[0065] 图5是本发明NAT部署环境下的PCC会话绑定方法的流程示意图; [0065] FIG. 5 is a flow chart PCC session binding method in the context of the present invention NAT deployment;

[0066] 图6是本发明NAT部署环境下的PCC会话绑定方法的具体流程图; [0066] FIG. 6 is a detailed flowchart of a method PCC session binding NAT deployment environment in the present invention;

[0067] 图7是本发明NAT部署环境下的PCC会话绑定系统的结构示意图; [0067] FIG. 7 is a schematic view of PCC session binding system in a NAT environment, deployment of the present invention;

[0068] 图8是本发明PCRF的具体结构示意图。 [0068] FIG. 8 is a detailed schematic diagram of the present invention PCRF.

具体实施方式 Detailed ways

[0069] 以下结合附图和具体实施例来对本发明进行详细的描述。 [0069] The following specific embodiments and detailed description of the present invention in conjunction with the accompanying drawings. [0070] 方法实施例一: Example I [0070] Method:

[0071] 根据本发明,提供了一种NAT部署环境下的PCC会话绑定的方法; [0071] According to the present invention, there is provided a method of PCC session binding at a NAT deployment environment;

[0072] 其中,图5是本发明NAT部署环境下的PCC会话绑定方法的流程示意图; [0072] wherein, FIG. 5 is a schematic flow diagram of PCC session binding method in the context of the present invention NAT deployment;

[0073] 如图5所示,所述方法具体包括: [0073] FIG, 5 the method comprises:

[0074] SlOl =PCRF接收PCEF上报的UE的第一地址以及AF上报的第二地址;具体来说,在PCRF和PCEF的会话一中,PCRF收到PCEF向PCRF上报的UE的第一地址; [0074] SlOl = PCRF reported by the PCEF receives the first address of the UE and a second address reported by AF; specifically, in the PCRF and the PCEF in a session, the PCRF receives the first address of the UE reported by the PCEF to PCRF;

[0075] 在PCRF和AF的会话二中,PCRF收到AF向PCRF上报的业务流信息,其中,所述业务流信息中包含了业务平台AF获取到的用户UE的第二地址以及用户UE用以数据传输的端口,并且,所述第二地址和端口是经过NAT设备后的地址和端口。 [0075] In the two sessions PCRF and AF, AF PCRF receives the service flow information reported to the PCRF, wherein the service flow information includes a service platform AF acquired user of the UE with a second UE and user address in the data transmission port, and wherein the second address and port are the address and port of the NAT device.

[0076] S102 =PCRF根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话; [0076] S102 = PCRF session between the PCEF and the PCRF, and the PCRF AF and the first and second address whether the same binding;

[0077] 其中,如果第一地址和第二地址相同,则绑定会话一和会话二; [0077] wherein, if the first address and a second address are the same, then the bind a session and a session two;

[0078] S103:如果第一地址和第二地址不相同; [0078] S103: If the first and second address are not the same;

[0079] S104:获取NAT设备所创建的UE的地址映射转换关系; [0079] S104: acquiring UE NAT device created by converting the address mapping relationship;

[0080] S105:根据所述第二地址和所述地址映射转换关系中的映射关系,查询与第二地址所对应的第三地址; [0080] S105: The address of the second address and said translation mapping relationship mapping relationship, the second address and the third address of the query corresponding to;

[0081] 具体来说,地址映射关系包含着NAT设备所生成的各种地址/端口的转换关系,由此,该步骤之中,PCRF可以根据所述第二地址和端口从所述地址映射转换关系中查询与第二地址所对应的第三地址; [0081] Specifically, the address contains the mapping between the various address / port conversion relationship generated by the NAT device, whereby, in this step, the address map from the PCRF converter according to the second address and port relationship query third address corresponding to the second address;

[0082] S106:比较第一地址与第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话; [0082] S106: comparing the first address and the third address is the same to bind session between PCRF and PCEF and the PCRF and the AF;

[0083] 否则,则认定绑定失败。 [0083] Otherwise, the finds bind failure.

[0084] 在该实施例中,所述PCEF在具体的架构中有不同的表现形式,例如,PCEF可以替换成BBERF,且PCEF在各种网络环境下,可以有不同的功能实体表现方式,这些是本领域技术人员所能够知晓的,在此不详细描述。 [0084] In this embodiment, the PCEF with a specific architecture in different forms, e.g., PCEF to the BBERF can be replaced, and the PCEF in a variety of network environments may have different functional entities expression, these the skilled person can be known and not described in detail herein.

[0085] 本实施例采取了上述技术方案后,能够在引入PCC架构以后,可以确保PCRF准确地在NAT环境下进行会话一和会话二的绑定,进而提供业务流所需的QoS保障,具有较好的技术效果。 After [0085] The present embodiment adopted the above technical solutions, it is possible after the introduction of PCC architecture ensures a PCRF accurately session and session binding at two NAT environment, thereby providing the desired traffic flow QoS guarantee, having better technical effect.

[0086] 方法实施例二: [0086] Example Two:

[0087] 以下结合附图对本发明进行更详细的描述; [0087] conjunction with the drawings of the present invention will be described in more detail;

[0088] 其中,图6是本发明NAT部署环境下的PCC会话绑定方法的具体流程图,如图6所示,所述方法具体进一步包括: [0088] wherein, FIG. 6 is a detailed flowchart of a method PCC session binding NAT deployment environment in the present invention, shown in Figure 6, specifically the method further comprising:

[0089] S201:在PCRF和PCEF的会话一中,PCRF收到PCEF向PCRF上报的UE的第一地址; [0089] S201: the PCRF and the PCEF in a session, the PCRF receives the first address of the UE reported by the PCEF to PCRF;

[0090] 其中,该步骤和现有技术的步骤大体相同,具体地,PCEF收到UE发送的IP-CAN会话建立请求消息,其中,该消息采取Gx接口,并采用了Diameter协议,会话一主要是PCEF向PCRF请求下发UE会话的PCC规则,并且UE能够基于会话一所建立的缺省承载发起特定的业务请求,例如,发起登录请求或者IMS Invite请求。 Step [0090] wherein, the prior art step and substantially the same, in particular, the PCEF receives IP-CAN session setup request message sent by the UE, wherein the message to take a Gx interface, and uses the Diameter protocol, a session mainly request is PCEF to the PCRF delivers PCC rules for the UE session, UE and a session can be established based on the default bearer service request initiated by a particular, e.g., initiate a login request or IMS Invite request.

[0091] 并且,为了对UE将开展的业务进行控制,需要针对UE所请求的业务制定合适的PCC规则。 [0091] In addition, in order to control the business UE to be carried out, the need to develop appropriate PCC rules for the UE requested service.

[0092] S202:在PCRF和AF的会话二中,PCRF收到AF向PCRF上报的业务流信息,其中,所述业务流信息中包含了业务平台AF获取到的用户UE的第二地址以及用于数据传输的端口,该端口主要是UE用以IP数据传输; [0092] S202: In the PCRF and two AF session, PCRF receives the service flow information reported by AF to PCRF, wherein the service flow information includes a second service platform AF address acquired by the user and the UE in the data transmission port, the port is mainly used for UE IP data transmission;

[0093] 具体在一个实施例中,例如,AF收到UE所转发的第一条消息,该消息会触发AF,由此,AF从该消息之中获取到UE的第二地址,并且,所述AF还能够所述第一条消息中获取到具体的UE用于IP数据传输的端口。 [0093] In one particular embodiment, for example, the AF receives the first UE forwarded message, which message triggers the AF, thereby, the AF from among the acquired message to the second address of the UE, and the AF can also be said of the first message to acquire a UE specific port for IP data transmission.

[0094] 其中,第二地址和端口是唯一确定的。 [0094] wherein the second address and port is uniquely determined.

[0095] 具体地,AF在向PCRF发出的Rx接口消息中携带所述获取到的UE的第二地址,和获取到的UE的端口一起发送给PCRF.[0096] S204 =PCRF收到所述Rx接口消息后,将AF侧传来的UE第二地址与PCEF传来的UE的第一地址进行比较,其中, Second address [0095] Specifically, the AF carrying the acquired UE Rx interface in the message sent to the PCRF, and the acquired port sent to the UE together with the PCRF. [0096] S204 = PCRF receives the after Rx interface message, transmitted from a second side of the AF address transmitted with the PCEF UE UE compares a first address, wherein

[0097] 如果比较后的UE的第二地址与会话一中的UE的第一地址,若相同,则认为这两个会话都是由相同的UE所发出,因此,实施会话绑定;且在绑定成功以后,PCRF制定并存储PCC规则,同时,向AF发送表示会话绑定成功的响应; [0097] If the first address and the second address comparison after the session of the UE in a UE, if yes, both sessions that are emitted from the same UE, and therefore, embodiments session is bound; and at after successful binding, the development and the PCRF stores the PCC rule, while binding to the AF sends a successful response indicates that the session;

[0098] 在设置有NAT设备的环境下,一般地,上述第一地址和第二地址大多会不相同,因此,本发明具体在步骤S204前还包括: [0098] In the apparatus provided with a NAT environment, in general, the first and second address would most likely not be the same, therefore, the present invention is particularly further comprising before step S204:

[0099] S203 =PCRF获取到NAT设备所映射的私网地址/端口与公网地址/端口的转换关系; [0099] S203 = PCRF to obtain the address of the NAT private network mapped device / port and public address / port conversion relation;

[0100] 其中,在优选实施例中,所述转换关系的提供方式上,主要有以下但是并不限于以下几种方式: [0100] wherein, in a preferred embodiment, provided in a manner the conversion relation, mainly in the following ways, but not limited to the following:

[0101] 1、由NAT设备每创建/取消一对地址映射时主动向PCRF提供; [0101] 1, each device created by the NAT / cancellations unsolicited one pair to the PCRF address mapping;

[0102] 2、NAT设备开放查询接口供PCRF查询; [0102] 2, NAT device PCRF open query interface for the query;

[0103] 3、通过一个数据网络设备提供给PCRF,或者,数据网络设备开放查询接口供PCRF查询,由此,所述PCRF通过上述方法,获取到NAT设备所映射的私网地址/端口和公网地址/端口之间的映射和转换关系。 [0103] 3 is provided via a data network device to the PCRF, or open a data network device PCRF query for a query interface, whereby the PCRF by the above method, the acquired private IP address mapped by the NAT devices / ports and male network address mapping and transformation between port /.

[0104] 在该实施例中,由NAT设备向PCRF主动提供所映射的私网地址/端口与公网地址/端口的转换关系。 [0104] In this embodiment, there is provided a private network address / port and public address / port conversion relation to the PCRF active mapped by the NAT device.

[0105] 由此,在步骤S204之后,进行步骤S205:若第一地址和第二地址不相同,则PCRF从AF中传来的业务流信息汇总中提取UE地址和该地址所对应的端口,并根据步骤S203中所获取到的NAT设备所映射的私网地址/端口与公网地址/端口的转换关系进行转换以获取UE的第三地址。 [0105] Thus, after step S204, step S205: if the first and second address are not identical, the PCRF extraction port and the UE address from the address corresponding to the traffic flow information collection came in AF, and according to the private address conversion step S203, the acquired NAT mapped device / port and public address / port conversion relationship for the third address of the UE.

[0106] 其中,由于网络地址/端口之间的映射关系在进行数据传输的过程中是唯一确定的,因此,我们可以利用该种转换关系以及获取到的UE的第二地址和端口,获取到UE所对应的第三地址。 [0106] wherein, since the data transfer is performed during a mapping relationship between the network address / port is uniquely determined, so we can use this kind of conversion relation and a second address and port acquired UE, to obtain third address corresponding to the UE.

[0107] 且根据该方法,该第三地址的类型和第一地址的类型应该是相同的(公网地址或者私网地址),接着,PCRF将该获取的UE的第三地址与会话一中获取的UE地址进行比较,如果这两个地址是相同的,则 [0107] According to this method, and the type of the third type and the address of the first should be the same address (public address or a private network address), then the third address and the acquired PCRF session of a UE in acquired UE address, and if the two addresses are the same,

[0108] S206:实施会话一与会话二的绑定;否则,认定绑定失败。 [0108] S206: session a session embodiment two bindings; otherwise, it shall bind failure. [0109] 由此,本发明通过PCRF、NAT设备、AF之间的交互,且通过AF提供其所获取的UE的地址以及对应的端口,就能在PCC架构的网络环境下,确保PCRF准确地在NAT环境下进行会话一和会话二的绑定,进而能够解决现有技术中NAT部署环境下由于公网地址/私网地址不一致而产生的问题。 [0109] Thus, through the interaction between PCRF, the NAT device, the AF of the present invention, provided they are acquired and the UE address by the AF and the corresponding port, can PCC architecture in a network environment, ensuring accurate PCRF and a conversation session binding at two NAT environment, and thus can solve the problems of the prior art due to inconsistencies in the deployment environment NAT public address / private IP address is generated.

[0110] 系统实施例一: [0110] Example embodiment of a system:

[0111] 图7是本发明NAT部署环境下的PCC会话绑定系统的结构示意图,如图所示,所述实施例中,具体包括: [0111] FIG. 7 is a schematic diagram of the PCC session binding system in the present invention NAT deployment environment, as shown in the illustrated embodiment, comprises:

[0112] PCEF,用于在PCRF和PCEF的会话一中,向PCRF上报的UE的第一地址; [0112] PCEF, the PCRF and the PCEF for a session in, UE first address reported to the PCRF;

[0113] AF,用于在PCRF和AF的会话二中,向PCRF上报业务流信息,其中,所述业务流信息中包含了AF获取到的用户UE的第二地址以及用以数据传输的所对应的端口; The [0113] AF, for two PCRF and AF session, the PCRF reports the information to the traffic flow, wherein the service flow information includes a second address acquired AF and the user of the UE for data transmission the corresponding port;

[0114] PCRF,用于根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话; [0114] PCRF, a session between the PCEF and the PCRF, and the PCRF AF and the first and second address whether the same binding;

[0115] 其中,当所述第一地址和第二地址不相同时, [0115] wherein, when said first and second address are not identical,

[0116] 获取NAT设备所创建的UE的地址映射转换关系; [0116] UE NAT devices get created address mapping conversion relationship;

[0117] 根据所述第二地址和所述地址映射转换关系中映射关系,查询与第二地址所对应的第三地址; [0117] mappings mapping conversion relationship according to the address and the second address, the second address and the third address query corresponds;

[0118] 比较第一地址与第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 [0118] comparing the first address and the third address is the same to bind session between PCRF and PCEF and the PCRF and the AF.

[0119] 从图7中可以发现,该系统还进一步包括: [0119] It is found from FIG. 7, the system further comprising:

[0120] NAT设备,用于向PCRF提供所映射的私网地址/端口与公网地址/端口的转换关系; [0120] NAT device, for providing the mapped to the PCRF private address / port and public address / port conversion relation;

[0121] 其中,上述转换关系可以由NAT设备向PCRF直接提供,也可以由PCRF设备向NAT设备进行查询而获取。 [0121] wherein the conversion relationship may be provided directly by the NAT device to PCRF, may be acquired by the PCRF device query to the NAT device.

[0122] 且在该具体实施例中,还设有数据网络设备,其与NAT设备相连,并用于存储NAT设备所映射的私网地址/端口与公网地址/端口的转换关系,并且,该数据网络设备还可以向PCRF提供查询服务。 [0122] and, in this particular embodiment, the device is also provided with a data network, which is connected to the NAT device, and a private network address of the storage device mapped NAT / port and public address / port conversion relation, and, the data network equipment can also provide consulting services to the PCRF.

[0123] 本发明采取了上述技术方案以后,通过NAT设备或者数据网络设备和PCRF之间接口和查询,能够实现本发明所要保护的在NAT部署环境下的PCC会话绑定的技术目的,具有较好的技术效果。 [0123] The present invention takes the above technical solution then, through a NAT device or data between the network device and the PCRF interfaces and queries can be achieved according to the invention to be protected under PCC session binding NAT deployment environment technical purpose, with relatively good technical effect.

[0124] 装置实施例一: [0124] Example a device:

[0125] 根据本发明实施例,公开了一种PCRF ; [0125] According to an embodiment of the present invention, a method is disclosed the PCRF;

[0126] 其中,图8是本发明PCRF的具体结构示意图;如图8所述,所述PCRF具体包括: [0126] wherein, FIG. 8 is a schematic view of a specific configuration of the present invention, the PCRF; in FIG. 8, the PCRF comprises:

[0127] 信息接收单元,用于接收PCEF上报的UE的第一地址和AF上报的UE的第二地址; [0127] information receiving means for receiving a second address of the UE reported by the PCEF to the first address of the UE and the AF reported;

[0128] 第一会话绑定单元,用于根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话; [0128] The first session binding unit, a session between the PCEF and the PCRF, and the PCRF AF and the first and second address whether the same binding;

[0129] 转换关系接收单元,用于获取NAT设备所创建的UE的地址映射转换关系; [0129] conversion relation receiving unit configured to obtain an address created equipment UE NAT mapping conversion relation;

[0130] 地址转换单元,用于在第一会话绑定单元绑定会话失败后,根据所述第二地址和所述地址映射转换关系的映射关系,查询与第二地址所对应的第三地址; [0130] Address conversion unit, the third address for the first session after the session fails to bind the binding unit, the second address according to the mapping relationship and mapping said address conversion relation, the query corresponding to the second address ;

[0131] 第二会话绑定单元,用于根据第一地址与第二地址或第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 [0131] The second session binding unit, the session between the PCRF and the PCEF and the PCRF and AF according to a first address or the second address and a third address is the same to bind.

[0132] 其中,所述NAT设备,用于每创建/取消一对地址映射时主动向PCRF提供;或者,开放查询接口供PCRF查询。 [0132] wherein, the NAT device, for each of creating / cancellations unsolicited one pair to the PCRF address mapping; or open PCRF query interface for the query.

[0133] 此外,还设有数据网络设备,用于存储有所述NAT设备所创建的UE的地址映射转换关系,并提供给PCRF或者供PCRF进行查询。 [0133] In addition, further provided with a data network device, a NAT device stores the UE created address mapping conversion relation, and provided to the PCRF or PCRF for the query.

[0134] 其中,所述UE的地址映射转换关系包括:UE的私网地址和端口以及UE的公网地址和端口之间的映射关系。 [0134] wherein the address mapping translations of the UE comprises: a mapping relationship between private network and public network addresses and port addresses and port UE UE.

[0135] 其中,所述UE的第二地址是UE的私网地址或者UE的公网地址。 [0135] wherein the second address of the UE's private network or a public network address of the UE address of the UE.

[0136] 此外,所述PCRF还包括: [0136] In addition, the PCRF further comprising:

[0137] PCC规则生成单元,用于在会话绑定成功后,为会话制定业务数据流的PCC规则。 [0137] PCC rule generation unit, after the session binding for successful development of PCC rules for the session service data stream.

[0138] 本发明采取了上述技术方案以后,该PCRF实现了在NAT部署环境下进行PCC会话绑定,进而进一步地为业务提供QoS保障,具有较好的技术效果。 [0138] The present invention takes the above technical solution after the PCRF for PCC session binding achieved at NAT deployment environment, and further provides QoS guarantee for the service, has better technical effect.

[0139] 最后应说明的是: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,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。 [0139] Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, but the present invention is not intended to limit the present invention. Although the detailed description of the embodiments, those skilled in the art that aspect, each of which can still be described embodiments of the foregoing embodiment may be modified, or some technical features equivalents. 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。 Any modification within the spirit and principle of the present invention, made, equivalent substitutions, improvements, etc., should be included within the scope of the present invention.

Claims (10)

1.一种NAT部署环境下的PCC会话绑定方法,包括: PCRF接收PCEF上报的UE的第一地址以及AF上报的第二地址; 根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话;其中,当所述第一地址和第二地址不相同时, 获取NAT设备所创建的UE的地址映射转换关系; 根据所述第二地址和所述地址映射转换关系中的映射关系,查询与第二地址所对应的第三地址; 比较第一地址与第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 PCC session binding at 1. A method of NAT deployment environment, comprising: receiving a first address and a second PCRF address reported by the UE AF reported by the PCEF; binding according to the first and second address is the same PCEF and the PCRF and a session between the AF and the PCRF; wherein, when said first and second address are not identical, obtains the address mapping translations of the UE created NAT device; according to the second address and the address mapping conversion mapping relationship relationship, the second address corresponding to a query and a third address; comparing the first address and the third address is the same to bind session between PCRF and PCEF and the PCRF and the AF.
2.根据权利要求1所述的NAT部署环境下的PCC会话绑定方法,其特征在于,所述UE的地址映射转换关系包括: UE的私网地址和端口以及UE的公网地址和端口之间的映射关系。 The PCC session binding method in NAT deployment environment according to claim 1, wherein the address mapping translations of the UE comprising: a private network and a public network address and port address and port number of the UE, the UE between mappings.
3.根据权利要求2所述的NAT部署环境下的PCC会话绑定方法,其特征在于, 所述UE的第二地址是UE的私网地址或者UE的公网地址。 The PCC session binding method in a NAT environment of the deployment of claim 2, wherein the second address of the UE's private network or a public network address of the UE address of the UE.
4.根据权利要求1所述的NAT部署环境下的PCC会话绑定方法,其特征在于,所述获取NAT设备所创建的UE的地址映射转换关系,具体包括:由NAT设备每创建/取消一对地址映射时主动向PCRF提供;或者, NAT设备开放查询接口供PCRF查询;或者,由一个数据网络设备提供给PCRF或者供PCRF进行查询。 The PCC session binding method in NAT deployment environment according to claim 1, wherein the obtaining the address mapping translations of the UE created NAT device comprises: each of the NAT devices create / cancellations a when unsolicited address mapping to the PCRF; or open the NAT device query interface for query PCRF; or data provided by a network device to the PCRF or PCRF for the query.
5.一种PCRF,具体包括: 信息接收单元,用于接收PCEF上报的UE的第一地址和AF上报的UE的第二地址;第一会话绑定单元,用于根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话; 转换关系接收单元,用于获取NAT设备所创建的UE的地址映射转换关系; 地址转换单元,用于在第一会话绑定单元绑定会话失败后,根据所述第二地址和所述地址映射转换关系的映射关系,查询与第二地址所对应的第三地址; 第二会话绑定单元,用于根据第一地址与第二地址或第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 The PCRF A, comprises: an information receiving unit, a second address of the UE receiving a first address reported by the PCEF, and AF reported by the UE; a first session binding unit configured in accordance with a first address and a second whether an address identical binding session between the PCEF and the PCRF and the AF and the PCRF; conversion relationship receiving unit, configured to acquire UE NAT device of the created address mapping conversion relationship; address translation unit, a first session for the binding unit after binding the session fails, the mapping according to the mapping relationship between the converted address and the second address, the second address and the third address corresponding to the query; a second session binding unit configured in accordance with a first address and the second two third address is the same address or to bind session between PCRF and PCEF and the PCRF and the AF.
6.根据权利要求5所述的PCRF,其特征在于,所述UE的地址映射转换关系包括:UE的私网地址和端口以及UE的公网地址和端口之间的映射关系。 6. PCRF 5 as claimed in claim, wherein the address mapping translations of the UE comprises: a mapping relationship between private network and public network addresses and port addresses and port UE UE.
7.根据权利要求5或6所述的PCRF,其特征在于,所述UE的第二地址是UE的私网地址或者UE的公网地址。 The PCRF 5 or claim 6, wherein the second address of the UE is a public address of the private network address of the UE or the UE.
8.—种NAT部署环境下的PCC会话绑定的系统,包括: PCEF,用于向PCRF上报UE的第一地址; AF,用于向PCRF上报UE的第二地址; NAT设备,用于创建并向PCRF提供UE的地址映射转换关系; PCRF,用于根据第一地址和第二地址是否相同绑定PCEF与PCRF以及AF与PCRF之间的会话;其中,当所述第一地址和第二地址不相同时, 获取NAT设备所创建的UE的地址映射转换关系; 根据所述第二地址和所述地址映射转换关系中的映射关系,查询与第二地址所对应的第三地址; 比较第一地址与第三地址是否相同以绑定PCEF与PCRF以及AF与PCRF之间的会话。 8.-. PCC session binding system in NAT deployment environment, comprising: PCEF, the first address for the UE to report the PCRF; AF, a second address for the report of the UE to the PCRF; NAT device for creating and the UE address mapping provided by the PCRF conversion relation; PCRF, whether for the same binding session between PCRF and PCEF and the PCRF and AF according to the first and second address; wherein, when said first and second address address mapping addresses are not the same conversion relation, acquiring the NAT device created UE; the second address according to the mapping relationship and mapping said address conversion relations, the second address and the third address queries corresponding; Comparative and a third address is the same address to bind session between PCRF and PCEF and the PCRF and the AF.
9.根据权利要求8所述的NAT部署环境下的PCC会话绑定的系统,其特征在于,所述NAT设备,用于每创建/取消一对地址映射时主动向PCRF提供;或者,开放查询接口供PCRF查询。 9. The system of PCC session binding NAT deployment environment in claim 8, wherein the NAT device, for each of creating / cancellations unsolicited one pair to the PCRF address mapping; Alternatively, open Query PCRF interfaces for queries.
10.根据权利要求8或9所述的NAT部署环境下的PCC会话绑定的系统,其特征在于, 还设有数据网络设备,用于存储有所述NAT设备所创建的UE的地址映射转换关系,并提供给PCRF或者供P CRF进行查询。 10. The system of PCC session binding at the NAT deployments 8 or claim 9, characterized in that the apparatus further provided with a data network for the UE NAT device stores the created address mapping conversion relations and provided to the PCRF queries or for P CRF.
CN2012100011261A 2012-01-04 2012-01-04 Method and system of policy and charging control (PCC) conversation binding in network address translation (NAT) deployment environment and policy and charging rule function (PCRF) CN103200151A (en)

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