WO2013060170A1

WO2013060170A1 - Method and device for providing charging support based on lipa bearer

Info

Publication number: WO2013060170A1
Application number: PCT/CN2012/078813
Authority: WO
Inventors: 张娟
Original assignee: 电信科学技术研究院
Priority date: 2011-10-26
Filing date: 2012-07-18
Publication date: 2013-05-02
Also published as: CN102332985A; CN102332985B

Abstract

Disclosed are a method and a device for providing charging support based on a local IP access (LIPA) bearer, which are used for accurately charging for the LIPA bearer by a charging center. The method comprises: in a process of setting up or modifying a bearer, a policy and charging rules function (PCRF) entity setting a corresponding charging policy for the bearer and at least notifying a policy and charging enforcement function (PCEF) entity of information about the charging policy and offload-reporting information; and when determining, according to the indication of the offload-reporting information, that the bearer accesses an IP network in an offload mode, the PCEF entity collecting statistics regarding corresponding charging related parameters according to the obtained charging policy and reporting the charging related parameters and offload indication to a charging center, so that the charging center charges for the bearer according to the obtained information. Under the policy and charging control (PCC) architecture, the charging center can accurately charge for the LIPA bearer, thereby improving the performance of the charging center and the quality of service of a system.

Description

一种提供基于 LIPA承载的计费支持的方法及装置本申请要求在 2011年 10月 26日提交中国专利局、申请号为 201110330228.3、发明名称为"一种提供基于 LIPA承载的计费支持的方法及装置"的中国专利申请的优先权，其全部内容通过引用结合在本申请中。技术领域 Method and apparatus for providing charging support based on LIPA bearer The present application claims to be submitted to the Chinese Patent Office on October 26, 2011, the application number is 201110330228.3, and the invention name is "a method for providing charging support based on LIPA bearer" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference. Technical field

本发明涉及通信领域，特别涉及一种提供基于 LIPA承载的计费支持的方法及装置。背景技术 The present invention relates to the field of communications, and in particular, to a method and apparatus for providing charging support based on LIPA bearers. Background technique

本地 IP访问（ Local IP Access, LIPA )功能是支持用户设备 ( User Equipment, UE ) 通过家庭基站（Home eNB , HeNB )和 L-GW ( Local GateWay, 本地网关）直接访问 IP 网络，而不需要通过核心网传递数据的一种新型技术。 The Local IP Access (LIP) function is to support user equipment (UE) to directly access the IP network through the home base station (Home eNB, HeNB) and L-GW (Local GateWay, local gateway) without passing through A new technology for delivering data to the core network.

如图 1所示的 LIPA架构，在第一种情况下，当 LIPA承载支持 UE通过 HeNB和 L-GW 直接访问的 IP网络为本地网络时， L-GW与分组数据网关（ Packet Data Network Gateway, PGW )的功能类似，但是 L-GW位于本地网络内部，而不是像 PGW—样位于核心网， UE 通过 L-GW可以访问的本地网络通常为家庭网络或者企业内部网络。 In the LIPA architecture shown in FIG. 1, in the first case, when the LIPA bearer supports the IP network directly accessed by the UE through the HeNB and the L-GW as the local network, the L-GW and the Packet Data Network Gateway (Packet Data Network Gateway, The function of the PGW is similar, but the L-GW is located inside the local network, rather than located in the core network like the PGW. The local network that the UE can access through the L-GW is usually a home network or an intranet.

如图 1 所示， UE 为 LIPA接入点名（Access Point Name, APN )建立分组数据网 ( Packet Data Network, PDN )连接时，服务网关（Serving Gateway, SGW )会为 UE选择连接到 L-GW, 另外 L-GW和 HeNB之间还会建立 Sxx接口。当 LIPA PDN连接建立完成后， UE的上行数据会通过 Sxx接口从 HeNB直接传递到 L-GW, 而 L-GW收到的下行数据也会通过 Sxx接口从 L-GW直接下发到 He B。 LIPA PDN连接的数据不需要经过核心网，在连接态下 HeNB到 SGW之间的 S 1-U接口以及 SGW到 L-GW之间的 S5接口上都不会传输数据。 As shown in Figure 1, when the UE establishes a Packet Data Network (PDN) connection for the LIPA Access Point Name (APN), the Serving Gateway (SGW) selects the connection to the L-GW for the UE. In addition, an Sxx interface is also established between the L-GW and the HeNB. After the LIPA PDN connection is established, the uplink data of the UE is directly transmitted from the HeNB to the L-GW through the Sxx interface, and the downlink data received by the L-GW is directly sent from the L-GW to the He B through the Sxx interface. The data connected by the LIPA PDN does not need to pass through the core network. In the connected state, no data is transmitted on the S 1-U interface between the HeNB and the SGW and on the S5 interface between the SGW and the L-GW.

如图 1所示的 LIPA架构，在第二种情况下，当 LIPA承载支持 UE通过 HeNB和 L-GW 直接访问的 IP网络为外部网络时， L-GW相当于 PGW, 此种功能又称为选择的在本地网络分流的 IP业务分流（ Selected IP Traffic Offload at local network, SIPTO at local network ) 功能，即 UE可以通过本地网络直接访问外部网络连接，数据不需要通过核心网的传输。在此过程中 , UE通过 HeNB直接访问 L-GW, 再通过 L-GW访问外部网络，而不需要经过 SGW的传输。 In the LIPA architecture shown in Figure 1, in the second case, when the LIPA bearer supports the IP network directly accessed by the UE through the HeNB and the L-GW as the external network, the L-GW is equivalent to the PGW, and this function is also called The function of the selected IP traffic offload at local network (SIPTO at local network) is that the UE can directly access the external network connection through the local network, and the data does not need to be transmitted through the core network. In this process, the UE directly accesses the L-GW through the HeNB, and then accesses the external network through the L-GW without transmitting through the SGW.

上述第一种情况和第二种情况的区别主要在于，第一种情况下， L-GW只能连接家庭或者企业网等内部网络，而第二种情况下， L-GW可以访问 internet等外部网络，而不能访问内网网络。参阅图 2所示，在 3GPP的策略和计费控制（ Policy and Charging Control, PCC )架构中，策略控制与计费增强功能（ Policy and Charging Enforcement Function, PCEF 立于 PGW 内，其主要执行业务数据流发现（ Service data flow detection, SDF detection ), 服务盾量 ( Quality of Service, QoS )映射、计费等功能。当 SGW与 PGW之间的 S5/S8接口是釆用 GPRS隧道协议（ GPRS Tunnelling Protocol, GTP )协议时，从业务数据流文件（ Service data flow file, SDF ) 映射到承载的承载绑定（Bearer binding )功能在 PCEF执行，而当 SGW 与 PGW之间的 S5/S8接口釆用代理移动 IP( Proxy Mobile IP, PMIP )协议时， bearer binding 在承载绑定及事件报告功能（ Bearing Binding and Event Report Function, BBERF )模块执行。但无论 S5/S8接口釆用 GTP协议还是 PMIP协议，计费（ charging )都在 PCEF执行。 The difference between the first case and the second case is mainly that, in the first case, the L-GW can only connect to an internal network such as a home or an enterprise network, and in the second case, the L-GW can access an external device such as the Internet. Network, but not the intranet. Referring to FIG. 2, in the 3GPP Policy and Charging Control (PCC) architecture, the Policy and Charging Enforcement Function (PCEF) is located in the PGW, and its main execution service data is Service data flow detection (SDF detection), Quality of Service (QoS) mapping, billing, etc. When the S5/S8 interface between the SGW and the PGW is the GPRS Tunneling Protocol (GPRS Tunnelling Protocol) , GTP) protocol, the service data flow file (SDF) mapping to the bearer binding function (Bearer binding) function is executed in the PCEF, and the S5/S8 interface between the SGW and the PGW uses the proxy In the mobile IP (Proxy Mobile IP, PMIP) protocol, bearer binding is performed in the Bearing Binding and Event Report Function (BBERF) module. However, regardless of whether the S5/S8 interface uses the GTP protocol or the PMIP protocol, Charging is performed at PCEF.

在建立 IP连接访问网络会话（IP-Connectivity Access Network, IP-CAN session ) 时， When establishing an IP-Connectivity Access Network (IP-CAN session),

PCEF向策略及计费规则功能（Policy and Charging Rules Function, PCRF ) 实体发送信用控制请求（credit control request, CC-Request ), 并且将其中的 CC-Request -Type AVP指示为初始请求（ INITIAL—REQUEST ); PCEF将用户标识（ user identification )和其他信息传递给 PCRF, PCRF根据接收到的信息在后续操作中决定要釆用的策略，这些信息可能包括 IP-CAN类型（ IP-CAN type ), 分组数据网络信息（ Packet data network information, PDN information ), 公共数据网连接指示（PDN connection identifier ), UE IP 地址（ UE IP address ),而 PCRF收到 CC-Request后会根据从 PCEF,身份注册服务器（ Subscripton Profile Repository, SPR ) 以及应用功能（ Application Function, AF ) 实体中获得的信息生成策略控制与计费（Policy Control and Charging, PCC )规则（ PCC rules )发送给 PCEF。 The PCEF sends a credit control request (CC-Request) to the Policy and Charging Rules Function (PCRF) entity, and indicates the CC-Request-Type AVP as the initial request (INITIAL_REQUEST) The PCEF passes the user identification and other information to the PCRF. The PCRF decides the policy to be used in subsequent operations based on the received information. The information may include IP-CAN type (IP-CAN type), grouping. Packet data network information (PDN information), public network connection indication (PDN connection identifier), UE IP address (UE IP address), and the PCRF receives the CC-Request and then registers the server according to the identity from the PCEF. The Subscripton Profile Repository (SPR) and the Information Control and Charging (PCC) rules obtained in the Application Function (AF) entity are sent to the PCEF.

PCC rules中包含了 Charging相关参数，携带在计费信息属性（Charging-Information The PCC rules include Charging related parameters, which are carried in the charging information attribute (Charging-Information).

AVP ) 中发送给 PCEF; PCEF收到后会根据收到的 PCC rules中指示的 charging相关参数获取用于计费的信息，并将计费所需的信息发生给相应的计费中心。如，若 PCRF指示对某一 SDF实行的是在线（ online )计费，则 PCEF将用户的计费信息通过 Gy接口发送给在线计费***（Online Charging System, OCS ), 若 PCRF指示对某一 SDF 实行的是离线 ( offline )计费，则 PDEF将用户的计费信息通过 Gz接口发送给离线计费***（Offline Charging System, OFCS )。 The AVP is sent to the PCEF. After receiving the PCEF, the PCEF obtains the information for charging according to the charging related parameter indicated in the received PCC rules, and generates the information required for the charging to the corresponding charging center. For example, if the PCRF indicates that online charging is performed for an SDF, the PCEF sends the user's charging information to the Online Charging System (OCS) through the Gy interface, if the PCRF indicates to a certain The SDF implements offline charging, and the PDEF sends the user's charging information to the Offline Charging System (OFCS) through the Gz interface.

实际应用中，对于通过 He B接入到网络的 UE, 运营商会分配不同的计费策略，因此， PCRF 在向 PCEF 返回 PCC rules 时会通过闭合用户组信息报告 AVP ( CSG-information-Reporting AVP ) 向 PCEF 指示要求上 ·ί艮 UE 的闭合用户组（closed subscriber group, CSG )信息。例如，如果 UE进入 /离开了一个 CSG小区，则要求 PCEF 向计费中心报告 UE的 CSG标识（ ID )发生了改变。如果 UE进入 /离开了某一混合小区 In actual applications, the carrier allocates different charging policies for the UEs that access the network through the He B. Therefore, the PCRF reports the AVP (CSG-information-Reporting AVP) by closing the user group information when returning the PCC rules to the PCEF. The PCEF is instructed to request the closed subscriber group (CSG) information of the UE. For example, if the UE enters/leaves a CSG cell, the PCEF is required to report to the charging center that the CSG identity (ID) of the UE has changed. If the UE enters/leaves a hybrid cell

( hybrid cell ), 则要求 PCEF向计费中心报告 CSG ID以及 UE是否是这一 hybrid cell的成员。当 PCEF收到了 UE进入 /离开了 CSG cell或者 hybrid cell的信息后， PCEF会将 CSG ID 及成员信息与其他计费相关的信息一起发送给相应的计费中心。 (hybrid cell), the PCEF is required to report the CSG ID to the charging center and whether the UE is a member of the hybrid cell. After the PCEF receives the information that the UE enters/leaves the CSG cell or the hybrid cell, the PCEF will send the CSG ID. And the member information is sent to the corresponding billing center together with other billing related information.

然而，现阶段 LIPA承载还不支持到 PCC的接口， LIPA承载的计费问题也没有讨论，因此， PCC策略中没有考虑到 LIPA承载对计费策略的影响。而随着 LIPA机制的发展，在后续的网络演进中，极有可能会支持实现 L-GW与 PCC之间的接口；由于 LIPA承载不需要使用核心网的用户面资源，因此对于 LIPA承载的计费与普通非 LIPA承载的计费可能会有所不同，因此，就需要针对 LIPA承载重新制定相应的 PCC策略。 However, at this stage, the LIPA bearer does not support the interface to the PCC. The charging problem of the LIPA bearer is not discussed. Therefore, the impact of the LIPA bearer on the charging policy is not considered in the PCC policy. With the development of the LIPA mechanism, in the subsequent network evolution, it is highly probable that the interface between the L-GW and the PCC will be supported. Since the LIPA bearer does not need to use the user plane resources of the core network, the calculation for the LIPA bearer The billing fee may be different from the normal non-LIPA bearer. Therefore, it is necessary to reformulate the corresponding PCC policy for the LIPA bearer.

如，若实现了 L-GW与 PCC之间的接口，则在 PCC架构中， PCRF会根据 UE接入的无线接入技术（Radio Access technoloty, RAT ), APN等信息生成计费策略并将计费策略传递给 PCEF执行。而 PCEF也需要将获取的 UE的计费信息传递到计费中心由运营商的计费。由于 LIPA承载与非 LIPA承载占用的网络资源不同， LIPA承载只需要占用运营商的空口承载，而不需要占用核心网承载，所以 PCC在给 UE分配计费策略以及在最后的计费上针对 LIPA承载与非 LIPA承载有所不同。 For example, if the interface between the L-GW and the PCC is implemented, in the PCC architecture, the PCRF generates a charging policy according to the information of the Radio Access Technology (RAT), APN, etc. accessed by the UE. The fee policy is passed to the PCEF for execution. The PCEF also needs to pass the obtained charging information of the UE to the charging center for charging by the operator. Because the LIPA bearer is different from the network resources occupied by the non-LIPA bearer, the LIPA bearer only needs to occupy the air interface bearer of the operator, and does not need to occupy the core network bearer. Therefore, the PCC allocates a charging policy to the UE and applies LIPA to the last charging. The bearer is different from the non-LIPA bearer.

但是，按照现阶段的***架构，是无法正确执行针对 LIPA承载的计费操作的，需要重新设计相关的执行流程。发明内容 However, according to the current system architecture, it is impossible to correctly perform the charging operation for the LIPA bearer, and the related execution process needs to be redesigned. Summary of the invention

本发明实施例提供一种提供基于 LIPA承载的计费支持的方法及装置，用以在 LIPA承载与 PCC架构连接时，实现对 LIPA承载的准确计费。 The embodiments of the present invention provide a method and an apparatus for providing charging support based on a LIPA bearer, so as to implement accurate charging of a LIPA bearer when the LIPA is connected to the PCC architecture.

本发明实施例提供的具体技术方案如下： The specific technical solutions provided by the embodiments of the present invention are as follows:

一种提供基于 LIPA承载的计费支持的方法，包括： A method for providing charging support based on LIPA bearers, including:

向 PCRF实体发送用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息； Sending a request message to the PCRF entity to indicate that an IP-CAN session needs to be accessed for the IP connection to perform a related operation;

接收所述 PCRF返回的携带有计费策略及分流报告信息的响应消息； Receiving, by the PCRF, a response message carrying the charging policy and the offloading report information;

在根据所述分流报告信息确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费。 When the IP-CAN session is used to access the IP network according to the split report information, the charging related parameter of the IP-CAN session is reported to the corresponding charging center according to the charging policy, and The offloading mode of the IP-CAN session is reported, so that the charging center performs related charging for the IP-CAN session according to the obtained data.

接收 PCEF实体发送的用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息； Receiving a request message sent by the PCEF entity to indicate that the IP-CAN session needs to be performed for the IP connection to access the network session;

向所述 PCEF返回携带有计费策略及分流报告信息的响应消息，令所述 PCEF在根据所述分流报告信息确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN Session 的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费。 Returning, to the PCEF, a response message carrying the charging policy and the offloading report information, so that the PCEF determines that the IP-CAN session is used to access the IP network according to the offloading report information, according to the The fee policy reports the charging related parameters of the IP-CAN Session to the corresponding charging center, and reports the IP-CAN The split mode used by the session enables the billing center to perform related charging for the IP-CAN session according to the obtained data.

一种提供基于 LIPA承载的计费支持的装置，包括： A device for providing charging support based on LIPA bearer, comprising:

第一通信单元，用于向 PCRF实体发送用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息，以及接收所述 PCRF返回的携带有计费策略及分流报告信息的响应消息； a first communication unit, configured to send, to the PCRF entity, a request message for indicating that an IP-CAN session is required to be performed for the IP connection, and receiving a response that is sent by the PCRF and carrying the charging policy and the offloading report information Message

第二通信单元，用于在根据所述分流报告信息确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费。 a second communication unit, configured to report the IP-CAN session to the corresponding charging center according to the charging policy when the IP-CAN session is used to access the IP network according to the split report information. The billing related parameter, and the shunting method for reporting the IP-CAN session, causes the billing center to perform related billing for the IP-CAN session according to the obtained data.

接收单元，用于接收 PCEF实体发送的用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息； a receiving unit, configured to receive a request message sent by the PCEF entity to indicate that the IP-CAN session needs to be performed for the IP connection to access the network session;

发送单元，用于向所述 PCEF返回携带有计费策略及分流报告信息的响应消息，令所述 PCEF在根据所述分流 ·ί艮告信息确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN Session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session 进行相关计费。 a sending unit, configured to return, to the PCEF, a response message carrying the charging policy and the offloading report information, so that the PCEF determines, according to the offloading, the IP-CAN session to use the offloading mode to access In the case of the IP network, the charging-related parameters of the IP-CAN session are reported to the corresponding charging center according to the charging policy, and the offloading mode of the IP-CAN session is reported, so that the charging center obtains the The data is correlated for the IP-CAN session.

本发明实施例中，在 IP-CAN Session建立或修改过程中， PCRF实体针对该 IP-CAN Session设置相应的 Charging信息，并至少将该 Charging信息和 offload-reporting信息通知 PCEF, PCEF根据 offload-reporting信息的指示，确定 IP-CAN Session釆用分流方式接入 IP网络时，根据获得的 Charging信息统计相应的计费相关参数，并向计费中心上报该计费相关参数以及 offload information, 令计费中心可以根据获得的信息对上述 IP-CAN Session 进行相关计费，这样，便在 PCC架构下，实现了计费中心针对基于 LIPA承载的 IP-CAN Session的准确计费，完善了计费中心的性能，也提高了***的服务盾量。附图说明 In the embodiment of the present invention, during the establishment or modification of the IP-CAN session, the PCRF entity sets corresponding Charging information for the IP-CAN Session, and notifies the PCEF at least the Charging information and the offload-reporting information, and the PCEF is based on offload-reporting The information indicates that the IP-CAN Session uses the offloading mode to access the IP network, collects the corresponding charging related parameters according to the obtained Charging information, and reports the charging related parameters and offload information to the charging center to make the charging. The center can charge the above IP-CAN Session according to the obtained information. In this way, under the PCC architecture, the billing center can accurately charge the IP-CAN session based on the LIPA bearer, and improve the billing center. Performance also increases the system's service shield. DRAWINGS

图 1为现有技术下 LIPA承载***架构示意图； 1 is a schematic structural diagram of a LIPA bearer system in the prior art;

图 2为现有技术下 PCC架构示意图； 2 is a schematic diagram of a PCC architecture in the prior art;

图 3为本发明实施例中 LIPA承载与 PCC架构连接示意图； 3 is a schematic diagram of a connection between a LIPA bearer and a PCC architecture according to an embodiment of the present invention;

图 4为本发明实施例中 PCEF实体功能结构示意图； 4 is a schematic structural diagram of a PCEF entity in an embodiment of the present invention;

图 5为本发明实施例中 PCRF实体功能结构示意图； FIG. 5 is a schematic structural diagram of a function of a PCRF entity according to an embodiment of the present invention;

图 6为本发明实施例中在 PCC架构下基于 LIPA承载进行计费支持流程图；图 7为本发明实施例中在 PCC架构下基于 LIPA承载进行承载建立流程图；图 8为本发明实施例中在 PCC架构下基于 LIPA承载进行承载修改流程图。具体实施方式 6 is a flowchart of charging support based on a LIPA bearer in a PCC architecture according to an embodiment of the present invention; FIG. 7 is a flowchart of performing bearer setup based on a LIPA bearer in a PCC architecture according to an embodiment of the present invention; FIG. 8 is a flowchart of performing bearer modification based on a LIPA bearer in a PCC architecture according to an embodiment of the present invention. detailed description

当 LIPA承载与 PCC架构连接时，为实现对 LIPA承载的准确计费，本发明实施例中， In the embodiment of the present invention, when the LIPA bearer is connected to the PCC architecture, in order to implement accurate charging for the LIPA bearer,

PCRF实体（以下筒称 PCRF )针对当前处理（如，建立或修改）的 IP-CAN Session设置相应的计费策略，并至少将该计费策略和分流报告信息通知 PCEF, PCEF根据分流报告信息的指示，确定 IP-CAN Session釆用分流方式接入 IP网络时，根据获得的计费策略统计相应的计费相关参数，并向计费中心上报该 IP-CAN Session的计费相关参数以及分流方式，令计费中心可以根据获得的信息对上述 IP-CAN Session进行相关计费。 The PCRF entity (hereinafter referred to as PCRF) sets a corresponding charging policy for the IP-CAN Session currently processed (eg, established or modified), and at least notifies the PCEF of the charging policy and the offloading report information, and the PCEF according to the offloading report information When the IP-CAN session is used to access the IP network by using the offloading method, the corresponding charging related parameters are calculated according to the obtained charging policy, and the charging related parameters and the shunting manner of the IP-CAN session are reported to the charging center. , the billing center can perform related billing on the above IP-CAN session according to the obtained information.

下面结合附图对本发明优选的实施方式进行详细说明。 Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

参阅图 3所示，本发明实施例中，在 LIPA承载与 PCC架构连接后的网络环境中，至少包括 PCEF和 PCRF, 其中， PCEF为一逻辑功能实体，在实际应用中， PCEF可以为独立的装置，如图 3所示，较佳的，也可以作为一功能模块设置在 L-GW内部。 PCRF, 用于针对承载设置相应的 PCC ruleso As shown in FIG. 3, in the network environment after the LIPA bearer is connected to the PCC architecture, at least the PCEF and the PCRF are included, where the PCEF is a logical functional entity. In practical applications, the PCEF may be independent. The device, as shown in FIG. 3, is preferably disposed inside the L-GW as a functional module. PCRF, used to set the corresponding PCC ruleso for the bearer

如图 3所示，若网络内设置有逻辑功能实体 BBERF,则 BBERF也可以为独立的装置，或者，较佳的，作为一功能模块设置在 SGW内部。 As shown in FIG. 3, if a logical function entity BBERF is provided in the network, the BBERF may also be an independent device, or, preferably, a functional module is disposed inside the SGW.

参阅图 4所示，本发明实施例中， PCEF至少包括第一通信单元 40和第二通信单元 41 , 其巾， As shown in FIG. 4, in the embodiment of the present invention, the PCEF includes at least a first communication unit 40 and a second communication unit 41,

第一通信单元 40,用于向 PCRF实体发送用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息，以及接收 PCRF返回的携带有计费策略及分流报告信息的响应消息； The first communication unit 40 is configured to send, to the PCRF entity, a request message for indicating that a related operation needs to be performed for the IP connection access network session IP-CAN session, and receive a response message that is returned by the PCRF and carries the charging policy and the offload report information. ;

第二通信单元 41 ,用于在根据分流报告信息确定 IP-CAN session釆用分流方式接入 IP 网络时，按照计费策略向相应的计费中心上报 IP-CAN session的计费相关参数，以及上报 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对 IP-CAN session进行相关计费。 The second communication unit 41 is configured to report the charging related parameter of the IP-CAN session to the corresponding charging center according to the charging policy when determining the IP-CAN session to use the offloading mode to access the IP network according to the offloading report information, and The IP-CAN session is used for the offloading mode, so that the billing center performs related billing for the IP-CAN session based on the obtained data.

进一步的，第一通信单元 40向 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息时，向家乡 PCRF实体直接发送用于指示需针对 IP-CAN session执行相关操作的请求消息；或者，通过漫游地 PCRF实体向家乡 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息。 Further, when the first communication unit 40 sends a request message for indicating that the related operation needs to be performed for the IP-CAN session, the first communication unit 40 directly sends a request message to the home PCRF entity to indicate that the related operation needs to be performed for the IP-CAN session. Or, the request message indicating that the related operation needs to be performed for the IP-CAN session is sent to the home PCRF entity by the roaming PCRF entity.

进一步的，第一通信单元 40向 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息时，向 PCRF实体发送用于指示建立 IP-CAN session的请求消息，或者，向 PCRF实体发送用于指示修改 IP-CAN session的请求消息。进一步的，第一通信单元 40接收所述 PCRF返回的携带有计费策略及分流报告信息的响应消息时，接收所述 PCRF返回的携带有策略和计费控制 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略、 QoS策略和分流报告信息；或者，接收所述 PCRF返回的携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略和分流报告信息。 Further, when the first communication unit 40 sends a request message for indicating that the related operation needs to be performed for the IP-CAN session, the first communication unit 40 sends a request message for instructing to establish an IP-CAN session to the PCRF entity, or to the PCRF entity. A request message is sent to indicate the modification of the IP-CAN session. Further, when receiving the response message that is sent by the PCRF and carrying the charging policy and the offloading report information, the first communication unit 40 receives a response message that is sent by the PCRF and carries the policy and charging control PCC rules, the PCC rules At least the charging policy, the QoS policy, and the offloading report information set for the IP-CAN session are included; or, the response message carrying the PCC rules returned by the PCRF is received, and the PCC rules include at least the Accounting policy and offload report information set by IP-CAN session.

进一步的，第二通信单元 41确定所述 IP-CAN session釆用分流方式接入 IP网络时，包括：确认所述 IP-CAN session传输的数据不经过核心网，而通过本地网关 L-GW直接传输至内部网络或外部网络时，确定所述 IP-CAN session釆用分流方式接入 IP网络。 Further, when the second communication unit 41 determines that the IP-CAN session is connected to the IP network by using the offloading mode, the method includes: confirming that the data transmitted by the IP-CAN session does not pass through the core network, but is directly through the local gateway L-GW. When transmitting to the internal network or the external network, it is determined that the IP-CAN session is connected to the IP network by using a split mode.

进一步的，第二通信单元 41 按照所述计费策略向相应的计费中心上报所述 IP-CAN session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费时，包括： Further, the second communication unit 41 reports the charging related parameter of the IP-CAN session to the corresponding charging center according to the charging policy, and reports the offloading mode used by the IP-CAN session to enable charging. When the center performs related charging for the IP-CAN session according to the obtained data, the center includes:

若所述 PCRF实体下发的计费策略指示针对所述 IP-CAN session釆用在线 online计费方式，则所述第二通信单元通过 Gy接口向在线计费*** 0CS上报所述 IP-CAN session釆用的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由所述 0CS根据获得的数据，针对所述 IP-CAN session进行相关计费； If the charging policy indicated by the PCRF entity indicates that the online charging mode is used for the IP-CAN session, the second communication unit reports the IP-CAN session to the online charging system 0CS through the Gy interface. Using the offloading method, and reporting the charging related parameters for the IP-CAN session statistics, the 0CS performs related charging for the IP-CAN session according to the obtained data;

若所述 PCRF实体下发的计费策略指示针对所述 IP-CAN session釆用离线 offline计费方式，则所述第二通信单元通过 Gz接口向离线计费*** 0FCS上报所述 IP-CAN session 的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由 0FCS根据获得的数据，针对所述 IP-CAN session进行相关计费。 If the charging policy indicated by the PCRF entity indicates that the offline offline charging mode is used for the IP-CAN session, the second communication unit reports the IP-CAN session to the offline charging system 0FCS through the Gz interface. The offloading mode, and reporting the charging related parameters for the IP-CAN session statistics, is performed by the 0FCS according to the obtained data, and the related charging is performed for the IP-CAN session.

参阅图 5所示，本发明实施例中， PCRF至少包括接收单元 50和发送单元 51 , 其中，接收单元 50,用于接收 PCEF实体发送的用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息； As shown in FIG. 5, in the embodiment of the present invention, the PCRF includes at least a receiving unit 50 and a sending unit 51, where the receiving unit 50 is configured to receive an IP-CAN session sent by the PCEF entity for indicating that the network session needs to be accessed for the IP connection. a request message for performing related operations;

发送单元 51 ,用于向 PCEF返回携带有计费策略及分流报告信息的响应消息，令 PCEF 在根据分流报告信息确定 IP-CAN session釆用分流方式接入 IP网络时，按照计费策略向相应的计费中心上报 IP-CAN Session的计费相关参数，以及上报 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对 IP-CAN session进行相关计费。 The sending unit 51 is configured to return a response message carrying the charging policy and the offloading report information to the PCEF, so that the PCEF, when determining the IP-CAN session to use the offloading mode to access the IP network according to the diverting report information, according to the charging policy The billing center reports the billing related parameters of the IP-CAN Session and the shunting method used for reporting the IP-CAN session, so that the billing center performs related billing for the IP-CAN session according to the obtained data.

进一步的，所述接收单元 50接收 PCEF实体发送的用于指示需针对 IP-CAN session 执行相关操作的请求消息时，接收所述 PCEF 实体直接发送的用于指示需针对 IP-CAN session执行相关操作的请求消息；或者，接收所述 PCEF实体通过漫游地策略及计费规则功能 PCRF实体发送的用于指示需针对 IP-CAN session执行相关操作的请求消息。 Further, the receiving unit 50 receives the request message sent by the PCEF entity to indicate that the related operation needs to be performed for the IP-CAN session, and receives the request sent directly by the PCEF entity to indicate that the related operation needs to be performed for the IP-CAN session. Or requesting, by the PCEF entity, a request message sent by the roaming policy and charging rule function PCRF entity to indicate that the related operation needs to be performed for the IP-CAN session.

进一步的，所述接收单元 50接收 PCEF实体发送的用于指示需针对 IP-CAN session 执行相关操作的请求消息时，接收 PCEF实体发送的用于指示建立 IP-CAN session的请求消息，或者，接收 PCEF实体发送的用于指示修改 IP-CAN session的请求消息。进一步的，所述发送单元 51向所述 PCEF返回携带有计费策略及分流报告信息的响应消息时，向所述 PCEF返回携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略、 QoS策略和分流报告信息；或者，向所述 PCEF返回的携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略和分流报告信息，以及向承载绑定和事件报告功能 BBERF实体返回携带有针对所述 IP-CAN session设置的 QoS策略的响应消息。 Further, the receiving unit 50 receives a request message sent by the PCEF entity to indicate that the related operation needs to be performed for the IP-CAN session, and receives a request message sent by the PCEF entity to indicate that the IP-CAN session is established, or receives the request message. A request message sent by the PCEF entity to indicate the modification of the IP-CAN session. Further, the sending unit 51 returns a response message carrying the charging policy and the offloading report information to the PCEF, and returns a response message carrying the PCC rules to the PCEF, where the PCC rules include at least the The charging policy, the QoS policy, and the offloading report information set by the IP-CAN session; or the response message carrying the PCC rules returned to the PCEF, the PCC rules including at least the setting for the IP-CAN session The fee policy and the offload report information, and the response message carrying the QoS policy set for the IP-CAN session to the bearer binding and event reporting function BBERF entity.

进一步的，所述发送单元 51令所述 PCEF根据所述分流报告信息，在确定所述 IP-CAN session 釆用分流方式接入 IP 网络时，按照所述计费策略向相应的计费中心上 ·ί艮所述 IP-CAN Session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费，包括： Further, the sending unit 51 causes the PCEF to access the IP network according to the offloading report information, and determine the IP-CAN session to use the offloading mode to access the IP network, according to the charging policy to the corresponding charging center. The charging-related parameters of the IP-CAN session and the shunting method for reporting the IP-CAN session, so that the charging center performs related charging for the IP-CAN session according to the obtained data, including :

所述发送单元 51令所述 PCEF根据获得的计费策略确定针对所述 IP-CAN session釆用在线 online计费方式时，通过 Gy接口向在线计费*** OCS上 4艮所述 IP-CAN session釆用的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由所述 OCS根据获得的数据 , 针对所述 IP-CAN session进行相关计费； The sending unit 51 causes the PCEF to determine, according to the obtained charging policy, that the online charging method is used for the IP-CAN session, and the IP-CAN session is sent to the online charging system OCS through the Gy interface. Using the offloading method, and reporting the charging related parameters for the IP-CAN session statistics, the OCS performs related charging for the IP-CAN session according to the obtained data;

所述发送单元 51令所述 PCEF根据获得的计费策略确定针对所述 IP-CAN session釆用离线 offline计费方式时，通过 Gz接口向离线计费*** OFCS上 4艮所述 IP-CAN session的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由 OFCS根据获得的数据，针对所述 IP-CAN session进行相关计费。 The sending unit 51 causes the PCEF to determine, according to the obtained charging policy, that the offline offline charging mode is used for the IP-CAN session, and the IP-CAN session is sent to the offline charging system OFCS through the Gz interface. The offloading mode, and reporting the charging related parameters for the IP-CAN session statistics, the OFCS performs related charging for the IP-CAN session according to the obtained data.

基于上述***架构，参阅图 6所示，本发明实施例中，在 PCC架构下基于 LIPA承载进行计费支持的概述流程如下： Based on the foregoing system architecture, referring to FIG. 6, in the embodiment of the present invention, an overview process of charging support based on a LIPA bearer under the PCC architecture is as follows:

步骤 600: PCEF向 PCRF请求针对 IP CAN session执行相关操作。 Step 600: The PCEF requests the PCRF to perform related operations for the IP CAN session.

本实施例中，在执行步骤 600时， PCEF可以向 PCRF发送请求消息，指示需要建立 ― IP CAN session, 或者，指示需要修改一 IP CAN session。 In this embodiment, when performing step 600, the PCEF may send a request message to the PCRF, indicating that an "IP CAN session" needs to be established, or indicating that an IP CAN session needs to be modified.

步骤 610: PCEF接收 PCRF返回的携带有计费策略及 offload-reporting (分流报告 )信息的响应消息。 Step 610: The PCEF receives a response message that is sent by the PCRF and carries a charging policy and an offload-reporting information.

在 IP-CAN session建立或者修改过程中， PCEF向 PCRF发送请求消息，指示需要建立或者修改某一承载； PCRF在返回给 PCEF的响应消息中会携带 PCRF为这一承载分配的 PCC rules, 该 PCC rules中可以包含有计费策略、 Qos策略，以及用户闭合用户组信息报告 ( CSG-Information-Reporting )等 AVP; 除此之外，本发明实施例中， PCRF在向 PCEF 返回 PCC rules的同时，还将在上述响应消息中携带一个 AVP, 这一 AVP可以称为分流 4艮告（ offload-reporting 息，其作用是向 PCEF指示，要求上 4艮 UE建立或修改的这一 IP-CAN session是否是通过分流（ offload ) 方式接入的。 During the establishment or modification of the IP-CAN session, the PCEF sends a request message to the PCRF to indicate that a bearer needs to be established or modified. The PCRF sends a PCC rules for the bearer to the PCF in the response message returned to the PCEF. In addition, in the embodiment of the present invention, the PCRF returns the PCC rules to the PCEF, in addition to the AVP of the CSG-Information-Reporting, It will also carry an AVP in the above response message. This AVP can be called a split-reporting message. The function is to indicate to the PCEF whether the IP-CAN session that is required to be established or modified by the UE is determined. It is accessed by offload.

本实施例中，若***内不存在 BBERF, 则 PCRF可以向 PCEF发送至少包含有计费策略、 QoS策略和分流 4艮告信息的 PCC rules,而若***中存在 BBERF,则 PCRF可以向 PCEF 发送至少包含有计费策略和分流 4艮告信息的 PCC rules, 同时向 BBERF发送至少包含有 QoS策略的 PCC rules, 后续实施例中将进行详细介绍。 In this embodiment, if there is no BBERF in the system, the PCRF may send at least the charging policy to the PCEF. If the BBERF exists in the system, the PCRF may send the PCC rules including at least the charging policy and the offloading information to the PCEF, and send at least the BBERF to the BBERF. The PCC rules of the QoS policy will be described in detail in the following examples.

步骤 620: PCEF根据获得的 offload-reporting信息，在确定上述 IP-CAN session釆用分流方式接入 IP 网络时，按照获得的计费策略向相应的计费中心上报该 IP-CAN session 的计费相关参数，以及上报该 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对上述 IP-CAN session进行相关计费。 Step 620: The PCEF reports the IP-CAN session charging to the corresponding charging center according to the obtained charging policy when determining that the IP-CAN session uses the offloading mode to access the IP network according to the obtained offload-reporting information. The relevant parameters, and the shunting method used for reporting the IP-CAN session, enable the billing center to perform related charging for the above IP-CAN session according to the obtained data.

本实施例中，如果 UE建立或修改的 IP-CAN session是以 LIPA方式（即通过 L-GW接入至本地网络 )或者 SIPTO at local network方式（即通过 L-GW接入至外部网络 )接入到 IP网络的，则说明上述 IP-CAN session是釆用 offload方式接入 IP网络的，那么 PCEF会向相应的计费中心发送一个 offload指示，用于表明这一 IP-CAN session不是正常通过核心网连接接入到 IP网络的承载，而是通过 offload方式接入到 IP网络的承载；即 PCEF确认上述 IP-CAN session传输的数据不经过核心网，而通过关 L-GW直接传输至内部网络或外部网络时，确定该 IP-CAN session釆用分流方式接入 IP网络。 In this embodiment, if the IP-CAN session established or modified by the UE is in LIPA mode (that is, accessing the local network through the L-GW) or SIPTO at local network (that is, accessing the external network through the L-GW) If the IP-CAN session is connected to the IP network by using the offload mode, the PCEF will send an offload indication to the corresponding billing center to indicate that the IP-CAN session is not normal. The core network connects to the bearer of the IP network, but accesses the bearer of the IP network through the offload mode; that is, the PCEF confirms that the data transmitted by the IP-CAN session does not pass through the core network, but is directly transmitted to the internal through the L-GW. When the network or the external network is used, it is determined that the IP-CAN session is connected to the IP network by using the offloading mode.

接下来，若 PCRF指示的计费策略显示上述 IP-CAN session釆用的是 online计费方式，则 PCEF通过 Gy接口向在线计费***（ OCS )上报 IP-CAN session的分流方式（即 LIPA 方式或 SIPTO at local network方式），以及上报针对该 IP-CAN session统计的计费相关参数，由 OCS根据获得的数据釆用 online计费方式对上述 IP-CAN session进行相关计费；另一方面，若 PCRF指示的计费策略显示上述 IP-CAN session釆用的是 offline计费方式，则 PCEF 通过 Gz接口向离线计费***（ OFCS )上报 IP-CAN session的分流方式（即 LIPA方式或 SIPTO at local network方式），以及上报针对该 IP-CAN session统计的计费相关参数，由 OFCS根据获得的数据釆用 offline计费方式对上述 IP-CAN session进行相关计费。 Next, if the charging policy indicated by the PCRF indicates that the IP-CAN session uses the online charging mode, the PCEF reports the IP-CAN session offload mode (ie, the LIPA mode) to the online charging system (OCS) through the Gy interface. Or SIPTO at local network mode), and reporting the charging related parameters for the IP-CAN session statistics, and the OCS uses the online charging method to perform related charging on the IP-CAN session according to the obtained data; If the charging policy indicated by the PCRF indicates that the IP-CAN session is in the offline charging mode, the PCEF reports the IP-CAN session offload mode to the offline charging system (OFCS) through the Gz interface (ie, LIPA mode or SIPTO at). The local network mode), and reporting the charging related parameters for the IP-CAN session statistics, the OFCS performs related charging on the IP-CAN session according to the obtained data and the offline charging method.

基于上述实施例，下面将从' ΊΡ-CAN session建立过程"和' ΊΡ-C AN session修改过程" 这两个应用场景，分别对上述实施例的具体实施进行详细说明。 Based on the above embodiments, the specific implementations of the foregoing embodiments will be described in detail below from the application scenarios of the "ΊΡ-CAN session establishment process" and the "ΊΡ-C AN session modification process".

参阅图 7所示，本发明实施例中，在 IP-CAN session建立过程中，指示计费中心基于 Referring to FIG. 7, in the embodiment of the present invention, in the process of establishing an IP-CAN session, the indication charging center is based on

LIPA承载进行计费的详细流程如下： The detailed process of charging for LIPA bearer is as follows:

步骤 700: 启动基于 LIPA承载的控制会话建立过程。 Step 700: Start a control session establishment process based on the LIPA bearer.

如图 7所示，本实施例中， PCEF和 BBERF均是位于 Gateway内的逻辑实体，不同的是， PCEF位于 L-GW, BBERF位于 SGW。 As shown in Figure 7, in this embodiment, both PCEF and BBERF are logical entities located in the Gateway. The difference is that the PCEF is located at the L-GW and the BBERF is located at the SGW.

步骤 701： PCEF接收建立 IP-CAN承载请求（ Establish IP-CAN Bear Rquest )。 Step 701: The PCEF receives an Establish IP-CAN Bear Rquest.

本实施例中， PCEF接收的 Establish IP-CAN Bear Rquest可以由 UE发送，也可以由 In this embodiment, the Establish IP-CAN Bear Rquest received by the PCEF may be sent by the UE, or may be

MME发送，在此不再赘述。 The MME sends it, and details are not described here.

步骤 702: PCEF向 PCRF (此 PCRF为 H-PCRF )发送 Indication of IP-CAN Session Establishment ( IP-CAN Session建立指示）。 Step 702: The PCEF sends an Indication of IP-CAN Session to the PCRF (this PCRF is an H-PCRF). Establishment (IP-CAN Session establishment indication).

如图所示，若 PCEF处于非漫游状态，则 PCEF直接向 H-PCRF (家乡 H-PCRF )发送 Establish IP-CAN Bearer Request, 若 PCEF处于漫游状态，则 PCEF通过一 V-PCRF (漫游地 PCRF ) 向 H-PCRF发送 Establish IP-CAN Bearer Request, As shown in the figure, if the PCEF is in a non-roaming state, the PCEF directly sends an Establish IP-CAN Bearer Request to the H-PCRF (home H-PCRF). If the PCEF is roaming, the PCEF passes a V-PCRF (Roaming PCRF) Send an Establish IP-CAN Bearer Request to the H-PCRF,

步骤 703： PCRF向 SPR发送身份请求 ( Profile Request )。 Step 703: The PCRF sends an identity request (Profile Request) to the SPR.

PCRF向 SPR发送 Profile Request, 是为了获取 UE的签约信息，从而制定更为适合的 PCC rules The PCRF sends a Profile Request to the SPR to obtain the subscription information of the UE, so as to formulate a more suitable PCC rules.

步骤 704: SPR向 PCRF返回身份响应（ Profile Response )。 Step 704: The SPR returns an identity response (Profile Response ) to the PCRF.

步骤 705: PCRF根据 SPR返回的信息制作针对相这 IP-CAN Session的 PCC rules, 即进行 Policy Decision。 Step 705: The PCRF creates PCC rules for the IP-CAN Session according to the information returned by the SPR, that is, performs Policy Decision.

步骤 706: PCRF向 PCEF返回承认 IP-CAN Session建立（ Acknowledge IP-CAN Session Establishment ), 在该消息中需要携带已制定的 PCC rules, 该 PCC rules中至少要携带针对上述 IP-CAN Session制定的计费策略和 offload-reporting信息，要求 PCEF上报 IP-CAN Session是否釆用了分流接入方式。 Step 706: The PCRF returns an Acknowledge IP-CAN Session Establishment to the PCEF. The message needs to carry the established PCC rules, and the PCC rules must carry at least the calculation for the IP-CAN Session. The fee policy and offload-reporting information require the PCEF to report whether the IP-CAN Session uses the offload access method.

从上述各步骤中可以看出， PCEF在步骤 701中接收需要建立 IP-CAN bearer的请求后，向 PCRF发送 IP-CAN session建立指示，为建立的承载请求获取 PCC rules, PCRF根据在步骤 702中接收到的信息，进一步地，还可能会通过向 SPR获得 UE的签约信息来针对上述 IP-CAN Session设置相应的 PCC rule。 It can be seen from the above steps that after receiving the request for establishing an IP-CAN bearer in step 701, the PCEF sends an IP-CAN session establishment indication to the PCRF to obtain PCC rules for the established bearer request, and the PCRF is according to step 702. The received information, further, may also set a corresponding PCC rule for the above IP-CAN Session by obtaining the subscription information of the UE to the SPR.

在步骤 706中， PCRF可以直接向处于非漫游状态的 PCEF发送 PCC rules, 或者，也可以通过漫游地的 PCRF间接向处于漫游状态的 PCEF发送 PCC rules。 In step 706, the PCRF may directly send the PCC rules to the PCEF in the non-roaming state, or may indirectly send the PCC rules to the PCEF in the roaming state through the PCRF of the roaming place.

另一方面，在步骤 706中， PCRF向 PCEF返回 PCC rules, 该 PCC rules主要包含以下信息（以不存在 BBERF实体为例）： On the other hand, in step 706, the PCRF returns PCC rules to the PCEF, and the PCC rules mainly contain the following information (in the absence of a BBERF entity):

*[ Charging-Rule-Remove ] *[ Charging-Rule-Remove ]

*[ Charging-Rule-Install ] *[ Charging-Rule-Install ]

[ Charging-Information ] [ Charging-Information ]

[ Online ] [ Online ]

[ Offline ] [ Offline ]

*[ QoS -Information ] *[ QoS -Information ]

[ Revalidation- Time ] [ Revalidation- Time ]

[ Default-EPS-Bearer-QoS ] [ Default-EPS-Bearer-QoS ]

[ Bearer-Usage ] [ Bearer-Usage ]

[ 3 GPP-User-Location-Info] [ 3 GPP-User-Location-Info]

*[ Usage-Monitoring-Information ] *[ CSG-Information-Reporting ] *[ Usage-Monitoring-Information ] *[ CSG-Information-Reporting ]

[ User-CSG-Information ] [ User-CSG-Information ]

PCRF通过这些信息向 PCEF指示了针对建立的 IP-CAN Session设置的 charging信息 (即计费策略）， QoS信息，业务数据流文件（ Service data flow file, SDF filer )信息等等；其中, 除了 Charging-Rule-Remove, Charging-Rule-Install和 Charging-Information是与计费相关的信息外， online和 offline选项指示了这一 IP-CAN Session是通过 online计费还是 offline计费的；如果是 online计费的，那么 PCEF按照 charging信息统计到了 IP-CAN Session 的计费相关参数后，会将数据通过 Gy接口传递到 OCS进行计费处理，如果是 offline计费的，那么 PCEF按照 charging信息统计到了 IP-CAN Session的计费相关参数后 , 会将数据通过 Gz接口传递到 OFCS进行计费处理。 The PCRF indicates to the PCEF the charging information (ie, charging policy), the QoS information, the service data flow file (SDF filer) information, etc. for the established IP-CAN Session setting through the information; wherein, in addition to Charging -Rule-Remove, Charging-Rule-Install and Charging-Information are billing related information, online and offline options indicate whether this IP-CAN Session is billed via online or offline; if it is online If the PCEF collects the accounting related parameters of the IP-CAN Session according to the charging information, the data will be transmitted to the OCS for charging processing through the Gy interface. If it is offline charging, then the PCEF counts the IP according to the charging information. After the charging related parameters of the CAN Session, the data will be transmitted to the OFCS through the Gz interface for charging processing.

另外 CSG-Information-Reporting和 User-CSG-Information则是用于在 CSG小区中的计费， UE位于 CSG小区或者 hybrid小区时，计费中心釆用的计费方式可能与宏小区不同，因此 PCEF将这些 CSG信息传递给计费中心后，计费中心可以釆取与 CSG相关的计费策略。 In addition, CSG-Information-Reporting and User-CSG-Information are used for charging in the CSG cell. When the UE is located in a CSG cell or a hybrid cell, the charging mode used by the charging center may be different from that of the macro cell, so the PCEF After the CSG information is transmitted to the charging center, the charging center can retrieve the charging policy related to the CSG.

另一方面，在步骤 706中， PCRF向 PCEF传递的 PCC rules中还要包含一个 offload reporting信息，要求 PCEF上报 IP-CAN Session的计费相关信息时，需要进一步报告这一承载是否是通过 offload方式接入的，如果这一承载是以 LIPA方式连接到本地网络或者是以 SIPTO at load network方式接入到外部网络，那么 PCEF需要向计费中心上报 offload information, 指示 UE是通过 offload方式接入到 IP网络的，如果 PCRF指示这一承载釆用的是 online的计费方式，则 PCEF通过 Gy接口向 OCS上报 offload指示，即是向 OCS通知上述 IP-CAN Session釆用的 offload方式；如果 PCRF指示这一承载釆用的是 offline的计费方式，则 PCEF通过 Gz接口向 OFCS上报 offload指示，即也是向 OCS通知上述 IP-CAN Session釆用的 offload方式。 On the other hand, in step 706, the PCF rules transmitted by the PCRF to the PCEF further include an offload reporting information. When the PCEF is required to report the charging related information of the IP-CAN session, it is necessary to further report whether the bearer is offloaded. If the bearer is connected to the local network in the LIPA mode or is connected to the external network in the SIPTO at load network mode, the PCEF needs to report the offload information to the charging center, indicating that the UE is accessed through the offload mode. On the IP network, if the PCRF indicates that the bearer uses the online charging mode, the PCEF reports the offload indication to the OCS through the Gy interface, that is, notifies the OCS of the offload mode of the IP-CAN Session; if the PCRF indicates This bearer uses the offline charging mode, and the PCEF reports the offload indication to the OFCS through the Gz interface, that is, also notifies the OCS of the offloading mode of the IP-CAN Session.

步骤 707: PCEF向计费中心发送鉴证请求（ Credit Request ), 请求通过计费中心的身份认证。 Step 707: The PCEF sends a credit request to the billing center to request authentication through the billing center.

步骤 708: 计费中心向 PCEF返回鉴证响应（Credit Response ), 通知 PCEF通过身份认证。 Step 708: The charging center returns an authentication response (Credit Response) to the PCEF, and notifies the PCEF to pass the identity authentication.

实际应用中，若 PCEF与计费中心之间的通信安全可以得到保障，则可以不执行步骤 707和步骤 708。 In practical applications, if the communication security between the PCEF and the billing center can be guaranteed, step 707 and step 708 may not be performed.

步骤 709: PCEF向流程发起方（如， UE或 MME )返回建立 IP-CAN承载响应（ Establish Step 709: The PCEF returns an IP-CAN bearer response to the process initiator (eg, UE or MME).

IP-CAN Bearer Response )。 IP-CAN Bearer Response ).

步骤 710 : PCEF 与流程发起方之间开始传输 IP-CAN 承载信号（ IP -CAN BearerSignaling )。步骤 711 : PCEF 向 PCRF 发送程发送 IP-CAN 会话建立承认 ( IP -CAN Session Establishment Acknowledge ) 消息。 Step 710: The IP-CAN bearer signal (IP-CAN Bearer Signaling) is started to be transmitted between the PCEF and the process initiator. Step 711: The PCEF sends an IP-CAN Session Establishment Acknowledge message to the PCRF transmission.

至此， IP-CAN Session已成功建立完毕，可以基于该 IP-CAN Session进行数据传输了。区别于上述述实施例，当 SGW与 L-GW之间的接口釆用 PMIP协议时， SGW要执行 BBERF的功能，即具有 BBERF功能的逻辑模块设置在 SGW内，此时在建立 IP-CAN session 时，当 PCRF在接收到从 BBERF发送过来的信息后，需要根据从 BBERF接收的信息以及从 SPR获取的信息生成 PCC rules, 与图 6所示流程不同的是，在步骤 706中， PCRF将 PCC rules下发时，需要将针对 IP-CAN session设置的 QoS策略以及与事件触发（event trugger )相关的信息传递给 BBERF,由 BBERF执行承载绑定过程，而与针对 IP-CAN session 设置的 charging信息（即计费策略 )仍然送给 PCEF ,例如， PCRF通过发起 IP-CAN session 修改过程将 charging信息发送到 PCEF。 At this point, the IP-CAN Session has been successfully established, and data transmission can be performed based on the IP-CAN Session. Different from the above-mentioned embodiment, when the interface between the SGW and the L-GW uses the PMIP protocol, the SGW performs the function of the BBERF, that is, the logic module with the BBERF function is set in the SGW, and the IP-CAN session is established at this time. When the PCRF receives the information sent from the BBERF, it needs to generate PCC rules according to the information received from the BBERF and the information obtained from the SPR. Unlike the procedure shown in FIG. 6, in step 706, the PCRF will PCC. When the rules are issued, the QoS policy set for the IP-CAN session and the information related to the event trugger need to be transmitted to the BBERF. The BBERF performs the bearer binding process and the charging information set for the IP-CAN session. (ie, the charging policy) is still sent to the PCEF. For example, the PCRF sends the charging information to the PCEF by initiating an IP-CAN session modification procedure.

参阅图 8所示，本发明实施例中，在 IP-CAN session修改过程中，指示计费中心基于 LIPA承载进行计费的详细流程如下： Referring to FIG. 8, in the embodiment of the present invention, in the IP-CAN session modification process, the detailed process of instructing the charging center to perform charging based on the LIPA bearer is as follows:

步骤 800: AF向 PCRF (即 H-PCRF )发送应用 /服务信息（ Application/Service Info )。步骤 801 : PCRF向 AF返回肯定应答（ ACK )。 Step 800: The AF sends application/service information (Application/Service Info) to the PCRF (ie, H-PCRF). Step 801: The PCRF returns an acknowledgement (ACK) to the AF.

步骤 802: PCRF针对某一发生改动的 IP-CAN Session制定相应的 PCC rules, 即进行 Policy Decision。 Step 802: The PCRF formulates corresponding PCC rules for a changed IP-CAN Session, that is, performs Policy Decision.

步骤 803 : 通过网络控制以及服务盾量规则提供（Gateway Control and QoS Rules Provision ) 流程，向 BBERF提供针对修改的 IP-CAN Session设置的 QoS策略。 Step 803: Provide the BBERF with a QoS policy for the modified IP-CAN Session setting through the Network Control and QoS Rules Provision process.

步骤 804: PCRF通过策略以及计费规则提供（ Policy and Charging Rules Provision )消息向 PCEF提供 PCC rules, 该 PCC rules内至少携带 PCRF针对修改的 IP-CAN Session设置的 Charging信息和 offload-reporting信息。 Step 804: The PCRF provides PCC rules to the PCEF through a Policy and Charging Rules Provision message, and the PCC rules carry at least the Charging information and the offload-reporting information set by the PCRF for the modified IP-CAN Session.

本实施例中，步骤 803和步骤 804是以***内存在 BBERF为例进行介绍的，若不存在 BBERF, 则 PCRF会向 PCEF提供提供至少包含上述 Charging信息、 Qos策略以及 offload-reporting信息的 PCC rules。具体方式参见步骤 706的相关描述，在此不再赘述。 In this embodiment, step 803 and step 804 are described by taking the BBERF in the system as an example. If there is no BBERF, the PCRF provides the PCEF with the PCC rules including at least the Charging information, the Qos policy, and the offload-reporting information. . For details, refer to the related description of step 706, and details are not described herein again.

另一方面，如图 8所示， PCRF (即 H-PCRF )可以直接向 PCEF提供上述 PCC rules, 也可以通过漫游地的 PCRF向 PCEF提供上述 PCC rules„具体方式参见步骤 706的相关描述，在此亦不再赘述。 On the other hand, as shown in FIG. 8, the PCRF (ie, H-PCRF) may directly provide the PCC rules to the PCEF, and may also provide the PCC rules to the PCEF through the PCRF of the roaming place. This will not be repeated here.

步骤 805、 PCEF执行接收到的 PCC rules, 即按照 offload-reporting信息的指示，在后续流程中将 IP-CAN Session是否釆用了分流接入方式的情况上报至相应的计费中心，即上报 offload information Step 805: The PCEF executes the received PCC rules, that is, according to the instruction of the offload-reporting information, reports whether the IP-CAN session uses the offload access mode in the subsequent process to the corresponding charging center, that is, reports the offload. Information

具体为：如果 PCEF确定修改的 IP-CAN Session釆用 LIPA方式连接或者 SIPTO at load network方式接入到 IP网络，那么 PCEF需要向计费中心上报 offload information, 指示上述 IP-CAN Session是通过 offload方式接入到 IP网络的。例如，如果 PCRF在 Charging信息中指示这一 IP-CAN Session釆用的是 online计费方式，则 PCEF通过 Gy接口向 OCS上报 offload information,令 OAC按照获得的数据对修改后的 IP-CAN Session进行相关计费；如果 PCRF指示这一 IP-CAN Session釆用的是 offline计费方式，则 PCEF通过 Gz接口向 OFCS上报 offload information, 令 OFCS按照获得的数据对修改后的 IP-CAN Session进行相关计费。 Specifically, if the PCEF determines that the modified IP-CAN Session is connected to the IP network by using the LIPA connection or the SIPTO at load network, the PCEF needs to report the offload information to the charging center. The IP-CAN Session is accessed to the IP network through offload. For example, if the PCRF indicates that the IP-CAN Session uses the online charging mode in the Charging information, the PCEF reports the offload information to the OCS through the Gy interface, so that the OAC performs the modified IP-CAN Session according to the obtained data. Related billing; If the PCRF indicates that the IP-CAN Session uses the offline charging mode, the PCEF reports the offload information to the OFCS through the Gz interface, so that the OFCS correlates the modified IP-CAN Session according to the obtained data. fee.

步骤 806: PCEF向计费中心发送 Credit Request, 请求通过计费中心的身份认证。步骤 807: 计费中心向 PCEF返回 Credit Response, 通知 PCEF通过身份认证。 Step 806: The PCEF sends a Credit Request to the billing center to request identity authentication through the billing center. Step 807: The charging center returns a Credit Response to the PCEF, and notifies the PCEF to pass the identity authentication.

实际应用中，若 PCEF与计费中心之间的通信安全可以得到保障，则可以不执行步骤 806和步骤 807。 In practical applications, if the communication security between the PCEF and the billing center is guaranteed, step 806 and step 807 may not be performed.

步骤 808: PCEF发送 IP-CAN承载信号（ IP-CAN Bearer Signaling )。 Step 808: The PCEF sends an IP-CAN Bearer Signaling (IP-CAN Bearer Signaling).

步骤 809: PCEF接收 IP-CAN Bearer Signaling. Step 809: PCEF receives IP-CAN Bearer Signaling.

步骤 810: PCEF向 PCRF返回 ACK。 Step 810: The PCEF returns an ACK to the PCRF.

步骤 811 : PCEF向 AF发送承载等级事件通知（ Notification of Bearer Level Event )。步骤 812: AF各 PCEF发送 ACK。 Step 811: The PCEF sends a Notification of Bearer Level Event to the AF. Step 812: Each PCEF of the AF sends an ACK.

至此， IP-CAN Session修改流程执行完毕， IP-CAN Session的分流接入方式已成功智能了计费中心，从而可以令计费中心实现准确计费。 At this point, the IP-CAN Session modification process is completed, and the IP-CAN Session's split access mode has been successfully enabled by the billing center, which enables the billing center to achieve accurate billing.

综上所述，本发明实施例中，在 IP-CAN Session建立或修改过程中， PCRF实体针对该 IP-CAN Session设置相应的 Charging信息，并至少将该 Charging信息和 offload-reporting 信息通知 PCEF , PCEF根据 offload-reporting信息的指示，确定 IP-CAN Session釆用分流方式接入 IP网络时，根据获得的 Charging信息统计相应的计费相关参数，并向计费中心上报该计费相关参数以及 offload information , 令计费中心可以根据获得的信息对上述 IP-CAN Session进行相关计费，这样，便在 PCC架构下，实现了计费中心针对基于 LIPA 承载的 IP-CAN Session的准确计费，完善了计费中心的性能，也提高了***的服务盾量。 In the embodiment of the present invention, during the establishment or modification of the IP-CAN session, the PCRF entity sets corresponding Charging information for the IP-CAN Session, and notifies the PCEF at least the Charging information and the offload-reporting information. The PCEF determines, according to the indication of the offload-reporting information, that the IP-CAN session uses the offloading mode to access the IP network, and then collects corresponding charging related parameters according to the obtained Charging information, and reports the charging related parameters and offload to the charging center. Information, so that the billing center can perform related billing on the above IP-CAN Session according to the obtained information, so that under the PCC architecture, the billing center can accurately charge the IP-CAN session based on the LIPA bearer, perfecting The performance of the billing center also increases the service shield of the system.

本领域内的技术人员应明白，本发明的实施例可提供为方法、 ***、或计算机程序产品。因此，本发明可釆用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介盾（包括但不限于磁盘存储器和光学存储器等）上实施的计算机程序产品的形式。 Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

本发明是参照根据本发明实施例的方法、设备（***）、和计算机程序产品的流程图和 /或方框图来描述的。应理解可由计算机程序指令实现流程图和 /或方框图中的每一流程和 /或方框、以及流程图和 /或方框图中的流程和 /或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的装置。 The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. A processor that can provide these computer program instructions to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing device To generate a machine that causes instructions executed by a processor of a computer or other programmable data processing device to generate functions for implementing a process in a flow or a flow and/or a block diagram in a block or blocks. s installation.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能。 The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步骤。 These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。 It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

1、一种提供基于 LIPA承载的计费支持的方法，其特征在于，包括： A method for providing charging support based on a LIPA bearer, comprising:

向策略及计费规则功能 PCRF实体发送用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息； Sending, to the policy and charging rule function, the PCRF entity, a request message indicating that the IP-CAN session needs to be performed for the IP connection to access the network session;

在根据所述分流报告信息确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN session的计费相关参数，以及上报所述 When the IP-CAN session is used to access the IP network according to the split report information, the charging related parameter of the IP-CAN session is reported to the corresponding charging center according to the charging policy, and Reported

IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费。 The offloading mode used by the IP-CAN session enables the billing center to perform related charging for the IP-CAN session based on the obtained data.

2、如权利要求 1所述的方法，其特征在于，向 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息，包括： The method according to claim 1, wherein the requesting message for indicating that the related operation needs to be performed for the IP-CAN session is sent to the PCRF entity, including:

向家乡 PCRF实体直接发送用于指示需针对 IP-CAN session执行相关操作的请求消息；或者， Sending a request message directly to the home PCRF entity to indicate that an operation needs to be performed for the IP-CAN session; or

通过漫游地 PCRF实体向家乡 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息。 A request message indicating that a related operation needs to be performed for the IP-CAN session is sent to the home PCRF entity by the roaming PCRF entity.

3、如权利要求 1所述的方法，其特征在于，向 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息，包括： The method according to claim 1, wherein the requesting message for indicating that the related operation needs to be performed for the IP-CAN session is sent to the PCRF entity, including:

向 PCRF实体发送用于指示建立 IP-CAN session的请求消息，或者，向 PCRF实体发送用于指示修改 IP-CAN session的请求消息。 A request message for instructing establishment of an IP-CAN session is sent to the PCRF entity, or a request message for instructing modification of the IP-CAN session is sent to the PCRF entity.

4、如权利要求 1所述的方法，其特征在于，接收所述 PCRF返回的携带有计费策略及分流报告信息的响应消息，包括： The method of claim 1, wherein receiving the response message that is returned by the PCRF and carrying the charging policy and the offloading report information includes:

接收所述 PCRF返回的携带有策略和计费控制规则 PCC rules的响应消息，该 PCC rules 中至少包含有针对所述 IP-CAN session设置的计费策略、服务盾量 QoS策略和分流报告信息；或者， Receiving, by the PCRF, a response message carrying a policy and charging control rule PCC rules, where the PCC rules include at least a charging policy, a service shield QoS policy, and a traffic distribution report information set for the IP-CAN session; Or,

接收所述 PCRF返回的携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略和分流报告信息。 Receiving, by the PCRF, a response message carrying PCC rules, where the PCC rules include at least a charging policy and a traffic distribution report information set for the IP-CAN session.

5、如权利要求 1 _ 4任一项所述的方法，其特征在于，确定所述 IP-CAN session釆用分流方式接入 IP网络时，包括： The method according to any one of claims 1 to 4, wherein when the IP-CAN session is used to access the IP network by using the offloading method, the method includes:

确认所述 IP-CAN session传输的数据不经过核心网，而通过本地网关 L-GW直接传输至内部网络或外部网络时，确定所述 IP-CAN session釆用分流方式接入 IP网络。 It is confirmed that the data transmitted by the IP-CAN session does not pass through the core network, but is directly transmitted to the internal network or the external network through the local gateway L-GW, and the IP-CAN session is determined to be connected to the IP network by using the offloading mode.

6、如权利要求 1 _ 4任一项所述的方法，其特征在于，按照所述计费策略向相应的计费中心上报所述 IP-CAN session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费，包括：若所述 PCRF实体下发的计费策略指示针对所述 IP-CAN session釆用在线 online计费方式，则通过 Gy接口向在线计费*** OCS上报所述 IP-CAN session釆用的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由所述 OCS根据获得的数据 ,针对所述 IP-CAN session进行相关计费； The method according to any one of claims 1 to 4, wherein the charging related parameter of the IP-CAN session is reported to the corresponding charging center according to the charging policy, and the IP is reported. - The split mode of the CAN session is used to enable the billing center to perform related billing for the IP-CAN session according to the obtained data, including: If the charging policy that is sent by the PCRF entity indicates that the online online charging mode is used for the IP-CAN session, the offloading mode of the IP-CAN session is reported to the online charging system OCS through the Gy interface. And reporting the charging related parameters for the IP-CAN session statistics, and the OCS performs related charging for the IP-CAN session according to the obtained data;

若所述 PCRF实体下发的计费策略指示针对所述 IP-CAN session釆用离线 offline计费方式，则通过 Gz接口向离线计费*** OFCS上报所述 IP-CAN session的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由 OFCS根据获得的数据 , 针对所述 IP-CAN session进行相关计费。 If the charging policy that is sent by the PCRF entity indicates that the offline offline charging mode is used for the IP-CAN session, the offloading mode of the IP-CAN session is reported to the offline charging system OFCS through the Gz interface, and the reporting is performed. For the charging related parameters of the IP-CAN session statistics, the OFCS performs related charging for the IP-CAN session according to the obtained data.

7、一种提供基于 LIPA承载的计费支持的方法，其特征在于，包括： A method for providing charging support based on a LIPA bearer, comprising:

接收策略和计费执行功能 PCEF 实体发送的用于指示需针对 IP 连接访问网络会话 Receive Policy and Charging Enforcement Function The PCEF entity sends an indication that a network session needs to be accessed for an IP connection.

IP-CAN session执行相关操作的请求消息； IP-CAN session request message for performing related operations;

向所述 PCEF返回携带有计费策略及分流报告信息的响应消息，令所述 PCEF在根据所述分流报告信息确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN Session 的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费。 Returning, to the PCEF, a response message carrying the charging policy and the offloading report information, so that the PCEF determines that the IP-CAN session is used to access the IP network according to the offloading report information, according to the The fee policy reports the charging related parameters of the IP-CAN session to the corresponding charging center, and reports the offloading mode used by the IP-CAN session, so that the charging center is directed to the IP-CAN session according to the obtained data. Perform related billing.

8、如权利要求 7所述的方法，其特征在于，接收 PCEF实体发送的用于指示需针对 IP-CAN session执行相关操作的请求消息，包括： The method of claim 7, wherein the receiving the request message sent by the PCEF entity to indicate that the related operation needs to be performed for the IP-CAN session comprises:

接收所述 PCEF实体直接发送的用于指示需针对 IP-CAN session执行相关操作的请求消息；或者， Receiving a request message directly sent by the PCEF entity to indicate that an operation needs to be performed for an IP-CAN session; or

接收所述 PCEF实体通过漫游地策略及计费规则功能 PCRF实体发送的用于指示需针对 IP-CAN session执行相关操作的请求消息。 Receiving, by the PCEF entity, a request message sent by the PCRF entity to indicate that an IP-CAN session needs to be performed by the roaming policy and charging rule function.

9、如权利要求 7所述的方法，其特征在于，接收 PCEF实体发送的用于指示需针对 IP-CAN session执行相关操作的请求消息，包括： The method of claim 7, wherein the receiving the request message sent by the PCEF entity to indicate that the related operation needs to be performed for the IP-CAN session comprises:

接收 PCEF实体发送的用于指示建立 IP-CAN session的请求消息，或者，接收 PCEF 实体发送的用于指示修改 IP-CAN session的请求消息。 Receiving a request message sent by the PCEF entity to indicate establishment of an IP-CAN session, or receiving a request message sent by the PCEF entity for indicating modification of the IP-CAN session.

10、如权利要求 7所述的方法，其特征在于，向所述 PCEF返回携带有计费策略及分流报告信息的响应消息，包括： The method of claim 7, wherein the returning the response message carrying the charging policy and the offloading report information to the PCEF includes:

向所述 PCEF返回携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略、 QoS策略和分流报告信息；或者， Returning, to the PCEF, a response message carrying the PCC rules, where the PCC rules include at least the charging policy, the QoS policy, and the offloading report information set for the IP-CAN session; or

向所述 PCEF返回携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略和分流报告信息，以及向承载绑定和事件报告功能 BBERF 实体返回携带有针对所述 IP-CAN session设置的 QoS策略的响应消息。 11如权利要求 7 - 10任一项所述方法，其特征在于，令所述 PCEF在根据所述分流报告信息确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN Session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费，包括：令所述 PCEF根据获得的计费策略确定针对所述 IP-CAN session釆用在线 online计费方式时，通过 Gy接口向在线计费*** OCS上报所述 IP-CAN session釆用的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由所述 OCS根据获得的数据 ,针对所述 IP-CAN session进行相关计费； Returning, to the PCEF, a response message carrying the PCC rules, where the PCC rules include at least the charging policy and the offloading report information set for the IP-CAN session, and returning the bearer to the bearer binding and event reporting function BBERF entity. There is a response message for the QoS policy set by the IP-CAN session. The method according to any one of claims 7 to 10, wherein, when the PCEF determines that the IP-CAN session is connected to the IP network according to the split report information, according to the The fee policy reports the charging related parameters of the IP-CAN session to the corresponding charging center, and reports the offloading mode used by the IP-CAN session, so that the charging center is directed to the IP-CAN session according to the obtained data. Performing related charging, including: causing the PCEF to determine, according to the obtained charging policy, that the online charging method is used for the IP-CAN session, and reporting the IP-CAN session to the online charging system OCS through the Gy interface. Using the offloading method, and reporting the charging related parameters for the IP-CAN session statistics, the OCS performs related charging for the IP-CAN session according to the obtained data;

令所述 PCEF根据获得的计费策略确定针对所述 IP-CAN session釆用离线 offline计费方式时，通过 Gz接口向离线计费*** OFCS上报所述 IP-CAN session的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由 OFCS根据获得的数据 , 针对所述 IP-CAN session进行相关计费。 When the PCEF determines, according to the obtained charging policy, that the offline offline charging mode is used for the IP-CAN session, the offloading mode of the IP-CAN session is reported to the offline charging system OFCS through the Gz interface, and the reporting is performed for The charging related parameter of the IP-CAN session is calculated by the OFCS according to the obtained data, and the related charging is performed for the IP-CAN session.

12、一种提供基于 LIPA承载的计费支持的装置，其特征在于，包括： 12. A device for providing charging support based on a LIPA bearer, comprising:

第一通信单元，用于向策略及计费规则功能 PCRF实体发送用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息，以及接收所述 PCRF返回的携带有计费策略及分流 4艮告信息的响应消息； a first communication unit, configured to send, to the policy and charging rule function PCRF entity, a request message for indicating that a related operation needs to be performed for the IP connection access network session IP-CAN session, and receiving the carried charging policy returned by the PCRF And a response message for diverting the 4 notification information;

13、如权利要求 12所述的装置，其特征在于，第一通信单元向 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息时，向家乡 PCRF实体直接发送用于指示需针对 IP-CAN session执行相关操作的请求消息；或者，通过漫游地 PCRF实体向家乡 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息。 The device according to claim 12, wherein when the first communication unit sends a request message indicating that the related operation needs to be performed for the IP-CAN session to the PCRF entity, the first communication unit directly sends a request message to the home PCRF entity for indicating A request message for performing an operation related to the IP-CAN session; or transmitting, by the roaming PCRF entity, a request message indicating that the related operation needs to be performed for the IP-CAN session to the home PCRF entity.

14、如权利要求 12所述的装置，其特征在于，第一通信单元向 PCRF实体发送用于指示需针对 IP-CAN session执行相关操作的请求消息时，向 PCRF 实体发送用于指示建立 IP-CAN session的请求消息，或者，向 PCRF实体发送用于指示修改 IP-CAN session的请求消息。 The apparatus according to claim 12, wherein when the first communication unit sends a request message indicating that the related operation needs to be performed for the IP-CAN session to the PCRF entity, the first communication unit sends a request to the PCRF entity to indicate establishment of the IP- The request message of the CAN session, or sending a request message for instructing to modify the IP-CAN session to the PCRF entity.

15、如权利要求 12所述的装置，其特征在于，第一通信单元接收所述 PCRF返回的携带有计费策略及分流报告信息的响应消息时，接收所述 PCRF返回的携带有策略和计费控制 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略、 QoS策略和分流报告信息；或者，接收所述 PCRF返回的携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略和分流报告信息。 The device according to claim 12, wherein the first communication unit receives the response message carrying the charging policy and the offloading report information returned by the PCRF, and receives the carried policy and the counter returned by the PCRF. The fee control PCC rules response message, the PCC rules include at least the charging policy, the QoS policy, and the offloading report information set for the IP-CAN session; or receiving the response message carrying the PCC rules returned by the PCRF The PCC rules include at least a charging policy and a traffic distribution report set for the IP-CAN session. Interest.

16、如权利要求 12 - 15 任一项所述的装置，其特征在于，第二通信单元确定所述 IP-CAN session釆用分流方式接入 IP网络时，包括：确认所述 IP-CAN session传输的数据不经过核心网，而通过本地网关 L-GW 直接传输至内部网络或外部网络时，确定所述 IP-CAN session釆用分流方式接入 IP网络。 The device according to any one of claims 12 to 15, wherein when the second communication unit determines that the IP-CAN session is connected to the IP network by using the offloading mode, the method includes: confirming the IP-CAN session The transmitted data does not pass through the core network, but is directly transmitted to the internal network or the external network through the local gateway L-GW, and the IP-CAN session is determined to be connected to the IP network by using the offloading mode.

17、如权利要求 12 - 15 任一项所述的装置，其特征在于，第二通信单元按照所述计费策略向相应的计费中心上报所述 IP-CAN session的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费时，包括： The device according to any one of claims 12-15, wherein the second communication unit reports the charging related parameter of the IP-CAN session to the corresponding charging center according to the charging policy, and The offloading mode of the IP-CAN session is reported, and the charging center performs related charging for the IP-CAN session according to the obtained data, including:

若所述 PCRF实体下发的计费策略指示针对所述 IP-CAN session釆用在线 online计费方式，则所述第二通信单元通过 Gy接口向在线计费*** OCS上报所述 IP-CAN session釆用的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由所述 OCS根据获得的数据 , 针对所述 IP-CAN session进行相关计费； If the charging policy that is sent by the PCRF entity indicates that the online charging mode is used for the IP-CAN session, the second communication unit reports the IP-CAN session to the online charging system OCS through the Gy interface. Using the offloading method, and reporting the charging related parameters for the IP-CAN session statistics, the OCS performs related charging for the IP-CAN session according to the obtained data;

若所述 PCRF实体下发的计费策略指示针对所述 IP-CAN session釆用离线 offline计费方式，则所述第二通信单元通过 Gz接口向离线计费*** OFCS上报所述 IP-CAN session 的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由 OFCS根据获得的数据，针对所述 IP-CAN session进行相关计费。 If the charging policy that is sent by the PCRF entity indicates that the offline offline charging mode is used for the IP-CAN session, the second communication unit reports the IP-CAN session to the offline charging system OFCS through the Gz interface. The offloading mode, and reporting the charging related parameters for the IP-CAN session statistics, the OFCS performs related charging for the IP-CAN session according to the obtained data.

18、一种提供基于 LIPA承载的计费支持的装置，其特征在于，包括： 18. An apparatus for providing charging support based on a LIPA bearer, comprising:

接收单元，用于接收策略和计费执行功能 PCEF实体发送的用于指示需针对 IP连接访问网络会话 IP-CAN session执行相关操作的请求消息； a receiving unit, configured to receive a request message sent by the PCEF entity to indicate that the IP-CAN session needs to be performed for the IP connection access network session;

19、如权利要求 18所述的装置，其特征在于，所述接收单元接收 PCEF实体发送的用于指示需针对 IP-CAN session执行相关操作的请求消息时，接收所述 PCEF实体直接发送的用于指示需针对 IP-CAN session执行相关操作的请求消息；或者，接收所述 PCEF实体通过漫游地策略及计费规则功能 PCRF实体发送的用于指示需针对 IP-CAN session执行相关操作的请求消息。 The device according to claim 18, wherein the receiving unit receives the request message sent by the PCEF entity to indicate that the related operation needs to be performed for the IP-CAN session, and receives the direct transmission by the PCEF entity. The request message indicating that the related operation needs to be performed for the IP-CAN session; or receiving the request message sent by the PCEF entity through the roaming policy and charging rule function PCRF entity to indicate that the related operation needs to be performed for the IP-CAN session .

20、如权利要求 18所述的装置，其特征在于，所述接收单元接收 PCEF实体发送的用于指示需针对 IP-CAN session执行相关操作的请求消息时，接收 PCEF实体发送的用于指示建立 IP-CAN session的请求消息，或者，接收 PCEF实体发送的用于指示修改 IP-CAN session的请求消息。 The device according to claim 18, wherein the receiving unit receives a request message sent by the PCEF entity for indicating that the related operation needs to be performed for the IP-CAN session, and the receiving PCEF entity sends the indication for establishment. The request message of the IP-CAN session, or the receiving PCEF entity sends an instruction to modify the IP-CAN Session request message.

21、如权利要求 18所述的装置，其特征在于，所述发送单元向所述 PCEF返回携带有计费策略及分流 4艮告信息的响应消息时，向所述 PCEF返回携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP-CAN session设置的计费策略、 QoS策略和分流报告信息；或者，向所述 PCEF返回的携带有 PCC rules的响应消息，该 PCC rules中至少包含有针对所述 IP—CAN session设置的计费策略和分流报告信息，以及向承载绑定和事件报告功能 BBERF实体返回携带有针对所述 IP-CAN session设置的 QoS策略的响应消息。 The device according to claim 18, wherein the sending unit returns a response message carrying the charging policy and the offloading information to the PCEF, and returns to the PCEF to carry the PCC rules. In response to the message, the PCC rules include at least the charging policy, the QoS policy, and the offloading report information set for the IP-CAN session; or the response message carrying the PCC rules returned to the PCEF, in the PCC rules At least the charging policy and the offloading report information set for the IP-CAN session are included, and the response message carrying the QoS policy set for the IP-CAN session is returned to the bearer binding and event reporting function BBERF entity.

22、如权利要求 18 - 21 任一项所述装置，其特征在于，所述发送单元令所述 PCEF 根据所述分流报告信息，在确定所述 IP-CAN session釆用分流方式接入 IP网络时，按照所述计费策略向相应的计费中心上报所述 IP-CAN Session 的计费相关参数，以及上报所述 IP-CAN session釆用的分流方式，令计费中心根据获得的数据针对所述 IP-CAN session进行相关计费，包括： The device according to any one of claims 18 to 21, wherein the sending unit causes the PCEF to determine the IP-CAN session to use the offloading mode to access the IP network according to the offloading report information. And reporting, by the charging policy, the charging related parameter of the IP-CAN session to the corresponding charging center, and reporting the offloading mode used by the IP-CAN session, so that the charging center is targeted according to the obtained data. The IP-CAN session performs related charging, including:

所述发送单元令所述 PCEF根据获得的计费策略确定针对所述 IP-CAN session釆用在线 online计费方式时，通过 Gy接口向在线计费*** OCS上报所述 IP-CAN session釆用的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由所述 OCS根据获得的数据，针对所述 IP-CAN session进行相关计费； The sending unit causes the PCEF to determine, according to the obtained charging policy, that the online charging method is used for the IP-CAN session, and the IP-CAN session is reported to the online charging system OCS through the Gy interface. The offloading mode, and reporting the charging related parameters for the IP-CAN session statistics, by the OCS, according to the obtained data, performing related charging for the IP-CAN session;

所述发送单元令所述 PCEF根据获得的计费策略确定针对所述 IP-CAN session釆用离线 offline计费方式时，通过 Gz接口向离线计费*** OFCS上 4艮所述 IP-CAN session的分流方式，以及上报针对所述 IP-CAN session统计的计费相关参数，由 OFCS根据获得的数据，针对所述 IP-CAN session进行相关计费。 The sending unit causes the PCEF to determine, according to the obtained charging policy, that the offline offline charging mode is used for the IP-CAN session, and the IP-CAN session is sent to the offline charging system OFCS through the Gz interface. The offloading mode, and reporting the charging related parameters for the IP-CAN session statistics, the OFCS performs related charging for the IP-CAN session according to the obtained data.