CN105764043A - Session binding method, PCRF, and session binding system - Google Patents

Abstract

The invention discloses a session binding method, PCRF and a session binding system, so as to complete QoS authorization in the scene where an Internet access device performs network access through an Internet sharing device. In the session binding method, the Internet access device obtains the network identification of the Internet sharing device when it knows that it is accessing the Internet through the Internet sharing device; the method includes: when the Internet access device performs network attachment through the Internet sharing device, the PCRF receives the PCEF The first QoS authorization request, which carries the network identification of the Internet sharing device; when the Internet access device performs service access through the AF, PCRF receives the second QoS authorization request sent by the AF, which carries the network identification set, the network identification set It contains the network identification of the Internet sharing device reported by the Internet access device; the PCRF binds the first QoS authorization request and the second QoS authorization request according to the network identification of the Internet sharing device.

Description

A session binding method, PCRF and session binding system

technical field

The invention relates to the technical field of mobile communication, in particular to a session binding method, PCRF and a session binding system.

Background technique

The PCC (Policy and Charging Control) architecture is the QoS (Quality of Service) guarantee mechanism of the next-generation core network evolution SAE (System Architecture Evolution) project. Among them, through this architecture, the network can detect different service flows, and realize QoS control, billing and other requirements for the service flows.

As shown in Figure 1, it is a schematic diagram of the PCC networking architecture, including the following functional entities: AF (ApplicationFunction, application functional entity), PCRF (PolicyControlandChargingRulesFunction, policy control and charging rule functional entity), PCEF (PolicyandCharingEnforcementFunction, policy and Billing Execution Function Entity), BBERF (BearingBindingandEventReportFunction, bearer binding and event reporting function), SPR (SubscriptionProfileRepository, user subscription database), OCS (OnlineChargingSystem, online charging system) and OFCS (OfflineChargingSystem, offline charging system).

Among them, PCRF is the centralized decision-making point of QoS rules, and its decision-making input comes from the service information provided by the Rx interface of AF (service flow description, service flow bandwidth requirement, service flow media type, service ID), user ID and SPR Included user subscription information, locally configured operator strategy, under 3GPP (3rdGenerationPartnershipProject, Third Generation Partnership Project) network, PCRF generates authorized QoS rules to PCEF (under LTE (LongTimeEvolution, long-term evolution) by P-GW ( PacketDataNetworkGateway, Packet Data Network Gateway) is implemented, under 2G/3G, it is delivered by GGSN (GatewayGPRSSupportNode, gateway GPRS support node)), and the policy is executed by PCEF according to the authorized QoS rules; under non-3GPP networks (such as WLAN, Wimax ), the PCRF generates the authorized QoS rules and sends them to the BBERF, and the BBERF executes the policy according to the authorized QoS rules.

QoS rules mainly include two parts: the description of business flow and related QoS parameters. Wherein, the QoS parameters mainly include ARP (for determining the priority of bearer resource acquisition), QCI (representing quality requirements such as forwarding priority, packet loss rate, bit error rate, etc.) and bandwidth requirements.

Based on the PCC architecture, as shown in FIG. 2 (in FIG. 2, it is applied to an LTE network as an example), it is a schematic diagram of a network architecture for UE (User Equipment, user equipment) to perform service access. When the UE initially attaches to the network, an IP-CAN session with the network side is established, and the UE develops its own business based on the established IP-CAN session. During the UE's initial attachment to the network, after receiving the IP-CAN session establishment request message sent by the UE, the PCEF requests the PCRF for the UE's default PCC rules through the Gx interface (using the Diameter protocol). Among them, for the convenience of expression, it is called PCEF The session with the PCRF is session one.

In the above process, it is required to provide the address of the UE to the PCRF when the PCEF cannot know the address of the UE, and the request sent by the PCEF to the PCRF also needs to carry the user identity (IMSI or MSISDN) of the UE.

According to the IP-CAN session established in the above process, a default bearer between UE and PCEF is established. Based on the default bearer established in session 1, UE can initiate a service request, such as a login request or an IMSInvite request. Further, in order to control the services to be used by the UE, it is necessary to formulate appropriate PCC rules for the services requested by the UE.

When the UE accesses a service, it first triggers the AF, and after the AF is triggered, defines the service information of the UE, sends the service information of the UE to the PCRF through an Rx interface message (AAR message), and initiates a session between the AF and the PCRF.

Wherein, the service information of the UE may include a network identifier of the UE, a network identifier, service data flow description information, an identifier of the UE (IMSI or MSISDN) and the like. And for the convenience of expression, the session between the AF and the PCRF may be referred to as session two.

The PCRF uses the UE network ID sent by the AF in session 2 and the UE network ID received by the PCEF in session 1, or the UE user ID sent in session 2 and the PCEF received in session 1. The user ID of the UE sent (because the AF does not necessarily know the user ID of the UE - especially in the third-party business scenario - the first solution is usually used) to bind session 1 and session 2, after the binding is successful , the PCRF formulates and stores the PCC rules, sends a response to the AF indicating that the session binding is successful, and allocates corresponding QoS parameters.

It can be seen from the above description that in the prior art, since the AF may not necessarily know the user identity of the UE, the PCRF usually binds session 1 and session 2 through the network identity of the UE to complete QoS authorization. In the IPv6 environment, since the network identifier of the UE is unique, it can correspond to the UE one by one. Therefore, the binding of the session 1 and the session 2 can be realized, and then the QoS authorization can be completed. However, in the case where the UE is assigned an IPv4 address, since there may be a NAT conversion process during the session establishment process or the UE shares the device through the Internet (such as a MIFI device or a mobile phone that can be used as a hotspot, etc.), in this case, Since session 1 is initiated by the MIFI device during the PDN connection process, what the PCRF obtains is the network identifier of the MIFI device, and for session 2 initiated during the service access process of the UE, what the PCRF obtains is the northbound shared public address of the UE. The network address or the UE's own network identity that can be reported by the UE itself. Since the network identity corresponding to the UE obtained by the PCRF through session 1 and session 2 is inconsistent, the PCRF cannot realize the binding of session 1 and session 2, resulting in the failure of QoS authorization. , so that the required QoS guarantee and dedicated bearer channel cannot be granted to the UE.

Contents of the invention

Embodiments of the present invention provide a session binding method, PCRF and a session binding system, so as to complete QoS authorization in the scenario where an Internet access device performs network access through an Internet sharing device.

An embodiment of the present invention provides a session binding method. When an Internet-connected device learns that it is accessing the Internet through the Internet-sharing device, it obtains the network identifier of the Internet-sharing device;

Said method comprises:

When the Internet access device attaches to the network through the Internet sharing device, the policy control and charging rule functional entity PCRF receives the first QoS authorization request sent by the policy and charging enforcement functional entity PCEF, and the first QoS authorization request carries the the network identification of the tethering device; and

When the Internet access device performs service access through the application function entity AF, the PCRF receives the second QoS authorization request sent by the AF, and the second QoS authorization request carries a network identification set, wherein the network identification The collection includes the network identifier of the Internet sharing device reported by the Internet access device;

The PCRF binds the first QoS authorization request and the second QoS authorization request according to the network identifier of the Internet sharing device.

An embodiment of the present invention provides a PCRF, including:

The first receiving unit is configured to receive the first QoS authorization request sent by the policy and charging enforcement function entity PCEF when the Internet access device attaches to the network through the Internet sharing device, and the first QoS authorization request carries the Internet sharing the network identification of the device;

The second receiving unit is configured to receive a second QoS authorization request sent by the AF when the Internet access device performs service access through the application function entity AF, and the second QoS authorization request carries a network identification set, wherein, The network identification set includes the network identification of the Internet sharing device reported by the Internet access device, and the network identification of the Internet sharing device is that when the Internet access device learns that it is accessing the network through the Internet sharing device, it sends the network identification to the Internet sharing device. acquired by the device;

A session binding unit, configured to bind the first QoS authorization request and the second QoS authorization request according to the network identifier of the Internet sharing device.

An embodiment of the present invention provides a session binding system, including: an Internet access device, an Internet sharing device, a policy control and charging rule functional entity PCRF, a policy and charging enforcement functional entity PCEF, and an application functional entity AF, wherein:

The Internet access device is used to obtain the network identifier of the Internet sharing device when it knows that it is accessing the Internet through the Internet sharing device; and is used to perform network attachment through the Internet access device or perform service access through the AF;

The PCEF is configured to send a first QoS authorization request to the PCRF when the Internet access device performs network attachment, and the first QoS authorization request carries the network identifier of the Internet access sharing device;

The AF is configured to send a second QoS authorization request to the PCRF when the Internet access device performs service access, and the second QoS authorization request carries a network identification set, wherein the network identification set includes There is a network identifier of the Internet sharing device reported by the Internet access device;

The PCRF is configured to use the network identifier of the Internet sharing device carried in the first QoS authorization request and the network of the Internet sharing device reported by the Internet sharing device carried in the second QoS authorization request ID, and bind the first QoS authorization request and the second QoS authorization request.

In the session binding method, PCRF, and session binding system provided by the embodiments of the present invention, when the Internet access device learns that it is accessing the network through the Internet sharing device, it obtains the network identifier of the Internet sharing device and notifies the AF. When applying for QoS authorization, the network identifier of the Internet sharing device reported by the Internet access device can be carried in the QoS authorization request and sent to PCRF. Since the Internet access device attaches to the network through the Internet sharing device, the PCEF also carries the QoS authorization when applying for QoS authorization from the PCRF. The network identifier of the Internet sharing device, so that the PCRF can identify the QoS authorization request initiated for the Internet access device according to the network identifier of the Internet access sharing device, and then bind the QoS authorization request for the Internet access device to complete the QoS authorization.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a schematic diagram of a PCC networking architecture in the prior art;

FIG. 2 is a schematic diagram of a network architecture of a UE performing network access in the prior art;

FIG. 3 is a schematic diagram of a network architecture for accessing the Internet in an embodiment of the present invention;

FIG. 4 is a schematic diagram of an implementation flow of a session binding method in an embodiment of the present invention;

5 is a schematic structural diagram of PCRF in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a session binding system in an embodiment of the present invention.

detailed description

In order to bind session 1 and session 2 to complete QoS authorization when the Internet access device accesses the network through the Internet sharing device, the embodiment of the present invention provides a session binding method, PCRF and a session binding system.

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention, and in the absence of conflict, the present invention The embodiments and the features in the embodiments can be combined with each other.

It should be noted that the Internet sharing device involved in the embodiment of the present invention may be, but not limited to, a MIFI device or a mobile terminal device that can be released as a sharing hotspot, such as a mobile phone.

Embodiment one

As shown in FIG. 3 , it is a schematic diagram of the network architecture of the Internet access device in the embodiment of the present invention. The Internet access device (including the reporting device 1 and the Internet access device 2 ) performs network access through the Internet sharing device.

Initially, the Internet-connected devices need to establish a network connection with the PDN network before they can access services, that is, to complete the network attachment process and establish IP-CAN bearer. During the network attachment process of the Internet access device, the PECF sends the first QoS authorization request to the PCRF. Since each Internet access device accesses the Internet through the Internet sharing device, what the PCEF obtains is the network identification of the Internet sharing device and carries it In the first QoS authorization request of the PCEF, the PCRF establishes a default bearer for the Internet device according to the request of the PCEF because the Internet device does not perform specific service access at this time and cannot obtain service-related information.

After establishing a connection with the network side, when the Internet device needs to access specific services, for example, the Internet device needs to access video services, the Internet device will send a service access request to the video server on the network side (usually AF is implemented on it), AF After receiving the service access request, a second QoS authorization request will be sent to the PCRF to apply for QoS parameters corresponding to the video service.

In order to enable the PCRF to identify the first QoS authorization request and the second QoS authorization request as QoS requests sent for the same Internet access device, and then bind the first QoS authorization request and the second QoS authorization request to complete QoS authorization. In the embodiment of the present invention, the Internet sharing device can provide a dedicated service on its southbound address, and provide the Internet device with information about whether the Internet access device is accessing the Internet through the Internet sharing device. Realization, for example, the Internet sharing device opens a query interface to the Internet device, and the Internet device feeds back itself as an Internet sharing device through the open query interface, and its own network identifier (for example, it can be its own northbound address); or expand the DHCP service, in order to The extension field is used in the address allocation message of the Internet access device to identify itself as an Internet access sharing device and its own network identifier, etc., which is not limited in the embodiment of the present invention.

When the Internet-connected device learns that it is accessing the network through the Internet-sharing device, it reports to the AF according to the obtained network identifier of the Internet-sharing device in the application message that it interacts with the AF. During specific implementation, the Internet access device can also report its own network identification to the AF. In this way, when the AF sends the second QoS authorization request to the PCRF, the second QoS authorization request can carry the network identification and its own network identification reported by the Internet access device. The network identifier of the Internet sharing device enables the PCRF to complete the binding of the first QoS authorization request and the second QoS authorization request according to the network identifier of the Internet sharing device, thereby completing QoS authorization.

Based on this, as shown in Figure 4, the session binding method provided by the embodiment of the present invention may include the following steps:

S41. When the Internet access device performs network attachment through the Internet sharing device, the PCRF receives the first QoS authorization request sent by the PCEF.

Wherein, the network identifier of the Internet sharing device is carried in the first QoS authorization request.

S42. When the Internet access device performs service access through the AF, the PCRF receives the second QoS authorization request sent by the AF.

During specific implementation, when the Internet access device performs service access, the AF initiates a second QoS authorization request to the PCRF through the Rx interface, wherein the second QoS authorization request carries a network identification set, wherein the network identification set contains the information reported by the Internet access device. , the network identifier of the Internet-sharing device and the network identifier of the Internet-connected device itself.

It should be noted that, if it is applied in a NAT deployment environment, the network identifier of the NAT device may also be carried in the second QoS authorization request.

S43. The PCRF binds the first QoS authorization request and the second QoS authorization request according to the network identifier of the Internet sharing device.

During specific implementation, the PCRF binds the first QoS authorization request and the second QoS authorization request by comparing the network identifier of the Internet sharing device carried in the first QoS authorization request and the second QoS authorization request.

It should be noted that during specific implementation, if the Internet access device does not access the network through the Internet sharing device, but provides a fake Internet sharing device address through the DHCP (Dynamic Host Configuration Protocol) service, due to the first QoS authorization request obtained by the PCRF The network identifier of the Internet sharing device in the second QoS authorization request is inconsistent with the network identifier of the Internet sharing device in the second QoS authorization request, so that QoS will not be wrongly granted.

During specific implementation, the second QoS authorization request sent by the AF to the PCRF also carries an SDF (ServiceDataFlow, service data flow), and the SDF includes the address and port of the AF and the address of the communication peer device. The address of the communication peer device represented in the SDF may be filled by the AF as the network identifier of the Internet sharing device or the network identifier of the NAT device in a NAT deployment environment. Preferably, in order to be compatible with non-MIFI application scenarios, AF may fill in the network identifier of the NAT device here.

After the PCRF binds the first QoS authorization request and the second QoS authorization request, if the address of the communication peer network device in the SDF is filled in as the network identifier of the NAT device, the PCRF can modify it to the network identifier of the Internet sharing device, so that Characterize the service flow that needs QoS guarantee, and make subsequent Gx request, that is, notify PCEF through the Gx interface.

The network identifier involved in Embodiment 1 may be a network address.

Embodiment two,

In the specific implementation, if the application layer control message (such as SIP message) and the media plane (such as RTP) use different ports respectively, or in order to specify the required bearer precisely, in the embodiment of the present invention, the IP5 tuple can be used to describe For SDFs that require specific QoS, the involved network identifiers can be characterized by both network addresses and network ports. For its specific implementation manner, reference may be made to Embodiment 1, which will not be repeated here.

In the session binding method, PCRF, and session binding system provided by the embodiments of the present invention, when the Internet access device learns that it is accessing the network through the Internet sharing device, it obtains the network identifier of the Internet sharing device and notifies the AF. When applying for QoS authorization, the network identifier of the Internet sharing device reported by the Internet access device can be carried in the QoS authorization request and sent to PCRF. Since the Internet access device attaches to the network through the Internet sharing device, the PCEF also carries the QoS authorization when applying for QoS authorization from the PCRF. The network identifier of the Internet sharing device, so that the PCRF can identify the QoS authorization request initiated for the Internet access device according to the network identifier of the Internet access sharing device, and then bind the QoS authorization request for the Internet access device to complete the QoS authorization.

Based on the same inventive concept, the embodiment of the present invention also provides a PCRF and session binding system. Since the problem-solving principle of the above-mentioned equipment and system is similar to the session binding method, the implementation of the above-mentioned equipment and system can refer to the implementation of the method , the repetitions will not be repeated.

As shown in Figure 5, the schematic structural diagram of the PCRF provided by the embodiment of the present invention may include:

The first receiving unit 51 is configured to receive the first QoS authorization request sent by the policy and charging enforcement function entity PCEF when the Internet access device attaches to the network through the Internet sharing device, and the first QoS authorization request carries all The network identification of the above-mentioned Internet sharing device;

The second receiving unit 52 is configured to receive a second QoS authorization request sent by the AF when the Internet access device performs service access through the application function entity AF, and the second QoS authorization request carries a network identification set, wherein , the network identification set includes the network identification of the Internet sharing device reported by the Internet access device, and the network identification of the Internet sharing device is when the Internet access device learns that it is accessing the network through the Internet sharing device, it sends Obtained by shared equipment;

A session binding unit 53, configured to bind the first QoS authorization request and the second QoS authorization request according to the network identifier of the Internet sharing device.

During specific implementation, when applied to a NAT deployment environment, the second QoS authorization request also carries a service data flow SDF, and the address of the communication peer device in the SDF is filled by the AF as the address of the NAT device network identifiers; and

The PRCF may also include:

A modifying unit, configured to modify the address of the communication peer device in the SDF to be the network identifier of the Internet sharing device;

A sending unit, configured to send a QoS authorization response to the PCEF, where the modified SDF is carried in the QoS authorization response.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described separately. Certainly, when implementing the present invention, the functions of each module (or unit) can be implemented in one or more pieces of software or hardware.

As shown in Figure 6, the session binding system provided by the embodiment of the present invention includes an Internet access device 61, an Internet sharing device 62, PCRF63, PCEF64 and AF65, wherein:

The Internet access device 61 is used to obtain the network identification of the Internet access sharing device 62 when it knows that it is accessing the network through the Internet access sharing device 62; access;

The PCEF64 is configured to send a first QoS authorization request to the PCRF63 when the Internet access device 61 performs network attachment, and the first QoS authorization request carries the network identifier of the Internet access sharing device 62;

The AF65 is configured to send a second QoS authorization request to the PCRF63 when the Internet access device 61 performs service access, and the second QoS authorization request carries a network identification set, wherein the network identification set Contains the network identification of the Internet sharing device 62 reported by the Internet access device 61;

The PCRF63 is used for the Internet sharing device reported according to the network identifier of the Internet sharing device 62 carried in the first QoS authorization request and the Internet sharing device 61 carried in the second QoS authorization request. 62, bind the first QoS authorization request and the second QoS authorization request.

Preferably, the Internet sharing device 62 can be used to notify the Internet device 61 when the Internet device 61 performs network access through itself.

During specific implementation, the session binding system may also include a NAT device; the network identifier set also includes the network identifier of the network identifier conversion NAT device, and the second QoS authorization request also carries the service data flow SDF, the The address of the communication peer device in the SDF is filled in by the AF65 as the network identifier of the NAT device; and

The PCRF63 can also be used to modify the address of the communication peer device in the SDF to be the network identifier of the Internet sharing device 62, and then send a QoS authorization response to the PCEF64, and the QoS authorization response carries a modified the SDF.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the present invention have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (10)

1. a binding session method, it is characterised in that equipment for surfing the net know self by online share equipment carry out network access time, obtain described online share equipment network identity；

Described method, including:

When equipment for surfing the net carries out network attachment by the equipment of sharing of surfing the Net, policy control and charging regulation function entity PCRF receive strategy and a QoS authorization requests of charging execution function entity PCEF transmission, carry described online and share the network identity of equipment in described first service quality Q oS authorization requests；And

When described equipment for surfing the net carries out Operational Visit by Application Function AF, described PCRF receives described AF the 2nd QoS authorization requests sent, described 2nd QoS authorization requests carries network identity set, wherein, described network identity set includes online that described equipment for surfing the net reports, described and shares the network identity of equipment；

The network identity that described PCRF shares equipment according to described online binds a described QoS authorization requests and described 2nd QoS authorization requests.

2. the method for claim 1, it is characterized in that, described equipment for surfing the net knows that sharing equipment self by described online carries out network access in accordance with the following methods: described online shares equipment when described equipment for surfing the net accesses by self carrying out network, notifies described equipment for surfing the net.

3. the method for claim 1, it is characterized in that, when described method is applied under NAT deployed environment, described network identity set also includes the network identity of network identity conversion NAT device, and described 2nd QoS authorization requests also carries server data stream SDF, the Correspondent Node device address in described SDF is extended this as the network identity of described NAT device by described AF.

4. method as claimed in claim 3, it is characterised in that also include:

Revising the Correspondent Node device address in described SDF is after the network identity that equipment is shared in described online, sends QoS authorization response to described PCEF, carries amended SDF in described QoS authorization response.

5. the method as described in Claims 1 to 4 any claim, it is characterised in that described network identity includes the network address or the network address and the network port.

6. a policy control and charging regulation function entity PCRF, it is characterised in that including:

First receives unit, for when equipment for surfing the net carries out network attachment by the equipment of sharing of surfing the Net, receive strategy and the first service quality Q oS authorization requests of charging execution function entity PCEF transmission, a described QoS authorization requests carries described online and shares the network identity of equipment；

Second receives unit, for when described equipment for surfing the net carries out Operational Visit by Application Function AF, receive described AF the 2nd QoS authorization requests sent, described 2nd QoS authorization requests carries network identity set, wherein, network identity set includes network identity that described equipment for surfing the net reports, that equipment is shared in online, described online share the network identity of equipment be described equipment for surfing the net know self by online share equipment carry out network access time, share what equipment obtained to described online；

Binding session unit, the network identity for sharing equipment according to described online binds a described QoS authorization requests and described 2nd QoS authorization requests.

7. PCRF as claimed in claim 6, it is characterized in that, when being applied under NAT deployed environment, also carrying server data stream SDF in described 2nd QoS authorization requests, the Correspondent Node device address in described SDF is extended this as the network identity of described NAT device by described AF；And

Described PRCF, also includes:

Amendment unit, is the network identity that equipment is shared in described online for the Correspondent Node device address revised in described SDF；

Transmitting element, for sending QoS authorization response to described PCEF, carries amended SDF in described QoS authorization response.

8. a binding session system, it is characterised in that including: equipment for surfing the net, equipment, policy control and charging regulation function entity PCRF, strategy and charging execution function entity PCEF and Application Function AF are shared in online, wherein:

Described equipment for surfing the net, for know self by online share equipment carry out network access time, obtain described online share equipment network identity；And carry out network attachment for sharing equipment by described online or carry out Operational Visit by described AF；

Described PCEF, for when described equipment for surfing the net carries out network attachment by the shared equipment of described online, sending first service quality Q oS authorization requests to described PCRF, carry described online and share the network identity of equipment in a described QoS authorization requests；

Described AF, for when described equipment for surfing the net carries out Operational Visit, the 2nd QoS authorization requests is sent to described PCRF, described 2nd QoS authorization requests carries network identity set, wherein, described network identity set includes online that described equipment for surfing the net reports, described and shares the network identity of equipment；

Described PCRF, the network identity of equipment is shared in described equipment for surfing the net for carrying in the network identity according to the shared equipment of the described online carried in a described QoS authorization requests and described 2nd QoS authorization requests reports, described online, binds a described QoS authorization requests and described 2nd QoS authorization requests.

9. system as claimed in claim 8, it is characterised in that

Equipment is shared in described online, specifically for when described equipment for surfing the net accesses by self carrying out network, notifying described equipment for surfing the net.

10. system as claimed in claim 8 or 9, it is characterised in that also include network address translation device；Described network identity set also includes the network identity of network identity conversion NAT device, also carrying server data stream SDF in described 2nd QoS authorization requests, the Correspondent Node device address in described SDF is extended this as the network identity of described NAT device by described AF；And

Described PCRF, the Correspondent Node device address being additionally operable to revise in described SDF is after the network identity that equipment is shared in described online, sends QoS authorization response to described PCEF, carries amended SDF in described QoS authorization response.