WO2013064070A1 - Method, system and pcrf for realizing reflection qos mechanism - Google Patents

Abstract

Disclosed are a method, system and policy and charging rules function (PCRF) entity for realizing a reflection quality of service (QoS) mechanism. The method includes: during a tunnel establishment authentication process or an access authentication process, a 3^rd generation partnership project authentication authorization accounting (3GPPAAA) server deciding whether user equipment (UE) performs a reflection quality of service (QoS) mechanism; the PCRF obtaining the decision result of whether to perform the reflection QoS mechanism, formulating a corresponding policy according to the decision result and providing same to a broadband forum (BBF) access network for implementation. The present invention on one hand supports all the access scenarios of 3GPP and BBF interconnection and intercommunication, and on the other hand, the network can effectively control whether the UE performs the reflection QoS mechanism, which can protect legitimate UE and prevent illegitimate UE seizing network resources.

Description

 Method, system and PCRF technical field for implementing reflection QoS mechanism

 The present invention relates to the field of interconnection and interworking technologies of the 3rd Generation Partnership Project (3GPP) and the Broadband Forum (BBF), and particularly relates to a method for implementing a QoS (Quality of Service) mechanism. , system and PCRF. Background technique

 The existing 3GPP evolved packet system (EPS, Evolved Packet System) component architecture is shown in FIG. 1 , and the EPS network architecture of the non-roaming scenario shown in FIG. 1 includes an evolved universal mobile communication system terrestrial radio access network ( E-UTRAN, Evolved Universal Terrestrial Radio Access Network), Mobility Management Entity (MME), S-GW (Serving Gateway), Packet Data Network Gateway (P-GW, Packet Data Network Gateway, Also known as PDN GW), Home Subscriber Server (HSS), Policy and Charging Rules Function (PCRF), and other supporting nodes.

Among them, PCRF is the core of policy and charging control (PCC), responsible for policy decision making and charging rules. The PCRF provides network control rules based on traffic data flows, including traffic data flow detection, Gating Control, QoS control, and data flow based charging rules. The PCRF sends its policy and charging rules to the Policy and Charging Enforcement Function (PCEF). At the same time, the PCRF also needs to ensure that these rules are consistent with the user's subscription information. The basis for the PCRF to formulate policies and charging rules includes: obtaining business-related information from an application function entity (AF, Application Function); and obtaining users from a user subscription database (SPR, Subscription Profile Repository) Policy charging control subscription information; obtaining information about the bearer-related network from the PCEF.

 EPS supports interworking with non-3GPP systems. The interworking between EPS and non-3GPP systems is implemented through the S2a/b/c interface, and the P-GW acts as an anchor between 3GPP and non-3GPP systems. As shown in FIG. 1, the non-3GPP system is divided into trusted non-3GPP IP access and untrusted non-3GPP IP access. Trusted non-3GPP IP access can be directly connected to the P-GW through the S2a interface; untrusted non-3GPP IP access requires an evolved packet data gateway (ePDG, Evolved Packet Data Gateway) to be connected to the P-GW, ePDG and P- The interface between the GWs is an S2b interface, and the user equipment (UE, User Equipment) and the ePDG use the Internet Protocol Security (IPSec) to encrypt the signaling and data. The S2c interface provides user plane-related control and mobility support between the UE and the P-GW. The supported mobility management protocol is Mobile IPv6 support for dual stack Hosts and Routers (DSMIPv6).

At present, many operators pay attention to fixed mobile convergence (FMC, Fixed Mobile Convergence) and conduct research on 3GPP and BBF interconnection. For the scenario where the user accesses the mobile core network through the BBF, it is required to guarantee the QoS on the entire transmission path of the data (data will pass through the fixed network and the mobile network transmission). In the prior art, the QoS guarantee is implemented by interacting with the Broadband Policy Control Framework (BPCF) in the BBF access through the PCRF. The BPCF is a policy control architecture in the BBF access. For the resource request message of the PCRF, the BPCF performs resource admission control according to the network policy and the subscription information of the BBF access, or forwards the resource request message to other network elements of the BBF access network. For example, a broadband network gateway (BNG, Broadband Network Gateway), and then other network elements perform resource admission control (ie, entrust other network elements to perform resource admission control). For example: When the UE accesses the 3GPP core network through the wireless local area network (WLAN), the total bandwidth requirement for all UE access services accessed through one WLAN access line does not exceed the bandwidth of the line (such as the subscription bandwidth or the line support). The maximum physical bandwidth), the PCRF needs to interact with the BPCF when performing QoS authorization, so that the BBF access network performs resource admission control. At present, the research on 3GPP and BBF interconnection mainly includes two aspects: 3GPP UE accesses evolved packet core network (EPC, Evolved Packet Core) scenario through BBF and 3GPP UE accesses 3GPP core network through H(e)NB The scenario in which H(e)NB connects the BBF access network as a Backhaul (routing path) to the 3GPP core network.

 2 is a schematic diagram of an architecture of a UE accessing a 3GPP core network through a WLAN in the prior art. As shown in FIG. 2, the BBF access network serves as an untrusted non-3GPP access. Currently, based on the architecture shown in FIG. 2, in the prior art, in the process of the UE accessing the EPC through the BBF access network, an S9a session is established between the BPCF and the PCRF for policy interworking. When the UE performs service access and needs to allocate resources to the network, the PCRF first sends the QoS information of the established PCC rule to the BPCF, so that the BBF access network performs admission control. The PCRF then sends the PCC rules accepted by the BBF access network to the PCEF. For the downlink data of the service data stream, the PCEF marks the header of the IP packet of the corresponding data stream downlink data (referred to as an internal packet header) according to the PCC rule, when the service is marked with a Differentiated Services Code Point (DSCP). When the downlink IP packet of the data stream arrives at the ePDG, the ePDG encapsulates the IP packet with IPSec, and marks the header of the IP packet (called the outer header) of the IPSec according to the DSCP of the IP packet (that is, the internal header) at the time of encapsulation. . In this way, the BBF access network can forward data packets according to the DSCP of the IP packet header of the IPSec. For the uplink data of the service data flow, because the UE cannot obtain the established QoS policy, the prior art provides a mechanism called Reflective QoS to implement QoS control of the uplink data of the service data flow, and the main idea is: UE The DSCP value of the downlink data of the service data flow is DSCP-marked according to the downlink data corresponding to the downlink data of the service data flow, and the uplink data of the service data flow is symmetric with the IP packet n-tuple of the downlink data (n-tuple).

In the prior art, for the scenario where the UE accesses the EPC through the BBF access network, when the UE accesses the BBF access network to perform 3GPP-based access authentication, the 3GPP AAA (Authentication Authorization Accounting) server will Perform reflective QoS The decision of the mechanism is notified to the UE. However, this method has the following drawbacks:

 First, not all UEs perform 3GPP-based access authentication when accessing the BBF access network;

 Secondly, in the method, the network cannot perform effective control on the UE that does not perform the network decision. Even if the network indicates that the UE does not perform the reflective QoS mechanism, the UE still performs the reflective QoS mechanism, and the network cannot prevent the UE from preempting resources of other UEs. .

 At present, the QoS control of the uplink data of the service data flow can be implemented by using the Reflective QoS mechanism for the scenario in which the UE accesses the service through the BBF access network. However, the prior art has not proposed a method for notifying the UE whether to implement the reflective QoS mechanism, and The network can be controlled accordingly. Summary of the invention

 In view of this, the main purpose of the embodiments of the present invention is to provide a method, a system, and a PCRF for implementing a reflective QoS mechanism, which can effectively control whether a UE performs a reflective QoS mechanism.

 To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

 An embodiment of the present invention provides a method for implementing a reflection QoS mechanism, where the method includes: in a tunnel establishment authentication or an access authentication process, a third generation partnership plan authentication authorization charging 3GPP AAA server determines whether a user equipment UE performs reflection A quality of service QoS mechanism; the PCRF obtains a decision result of whether to perform a reflection QoS mechanism, and formulates a corresponding policy according to the decision result and provides it to the broadband forum BBF access network for execution.

 The method also includes:

 The 3GPP AAA server determines whether the UE performs a reflective QoS mechanism according to whether the UE notifies the capability indication of performing the reflective QoS mechanism.

 The PCRF formulates a corresponding policy according to the decision result, specifically:

If the 3GPP AAA server determines that the UE performs a reflective QoS mechanism, the PCRF formulates a policy and charging control PCC rules and/or QoS rules that reflect the QoS mechanism; If the 3GPP AAA server decides that the UE does not perform a reflective QoS mechanism, the PCRF formulates PCC rules and/or QoS rules that are not reflective QoS mechanisms.

 The PCRF formulates a corresponding policy according to the decision result, specifically:

 If the 3GPP AAA server decides that the UE performs a reflective QoS mechanism, the PCRF provides an indication to the BBF access network to perform a reflective QoS mechanism.

 Before the 3GPP AAA server determines whether the UE performs the reflective QoS mechanism, the method further includes:

 The 3GPP AAA server determines that the UE accesses through the BBF access network according to the local IP address or the access network type of the UE provided by the evolved packet data gateway ePDG or the packet data network gateway P-GW.

 Before the 3GPP AAA server determines whether the UE performs the reflective QoS mechanism, the method further includes:

 The 3GPP AAA server determines, according to the access network type or the local configuration of the BBF access network report, that the UE accesses through the BBF access network.

 The PCC rules and/or QoS rules of the reflected QoS mechanism formulated by the PCRF are the same for the QoS class identifier QCI and/or the allocation hold priority ARP of the PCC rules and/or QoS rules of the uplink and the downlink of the same service data flow.

 The method also includes:

 The PCRF obtains the decision result of whether to perform the reflection QoS mechanism from the ePDG, the P-GW, or the fixed broadband policy control function entity BPCF.

 The embodiment of the present invention further provides a system for implementing a reflection QoS mechanism, where the system includes: a third generation partnership plan authentication authorization charging 3GPP AAA server, a policy and charging rule function entity PCRF, wherein

The 3GPP AAA server is configured to: determine whether the user equipment UE performs a reflective quality of service QoS mechanism in a tunnel establishment authentication or an access authentication process; The PCRF is configured to obtain a decision result of whether to perform the reflection QoS mechanism, and formulate a corresponding policy according to the decision result and provide the BBF access network for execution.

 The 3GPP AAA server is further configured to: determine whether the UE performs a reflective QoS mechanism according to whether the capability indication of the reflected QoS mechanism is performed by the UE.

 The PCRF is also used,

 When the 3GPP AAA server determines that the UE performs a reflective QoS mechanism, the PCRF formulates a policy and charging control PCC rules and/or QoS rules for the reflective QoS mechanism;

 When the 3GPP AAA server decides that the UE does not perform the reflective QoS mechanism, the PCRF formulates PCC rules and/or QoS rules that are not reflective QoS mechanisms.

 The PCRF is further configured to: when the 3GPP AAA server determines that the UE performs a reflective QoS mechanism, the PCRF provides an indication to the BBF access network to perform a reflective QoS mechanism.

 The 3GPP AAA server is further configured to determine, according to the local IP address or the access network type of the UE that is provided by the ePDG or the P-GW, that the UE passes the BBF access network, before determining whether the UE performs the reflective QoS mechanism. Access.

 The 3GPP AAA server is further configured to determine, according to the access network type or local configuration of the BBF access network report, that the UE accesses through the BBF access network, before determining whether the UE performs the reflective QoS mechanism.

 The PCC rules and/or QoS rules of the reflected QoS mechanism formulated by the PCRF are the same for the QCI and/or ARP of the PCC rules and/or QoS rules in the uplink and downlink directions of the same service data flow.

 The PCRF is also used to control functional entities from ePDG, P-GW or fixed broadband policies

The BPCF obtains the decision result of whether to perform the reflection QoS mechanism.

The embodiment of the present invention further provides a PCRF that implements a reflection QoS mechanism, and includes: a decision result obtaining module, configured to obtain, in a tunnel establishment authentication or an access authentication process, a decision for whether the user equipment UE performs a reflective service quality QoS mechanism result; The policy formulation module is configured to formulate a corresponding policy according to the decision result and provide the broadband forum BBF access network for execution.

 The policy formulation module is also used to

 When the decision result is that the UE performs the reflective QoS mechanism, the policy and charging control PCC rules and/or QoS rules of the reflective QoS mechanism are formulated;

 When the decision result is that the UE does not perform the reflective QoS mechanism, a PCC rule and/or a QoS rule that is not a reflection QoS mechanism is formulated.

 The method further includes: an indication sending module, configured to provide an indication to the BBF access network to perform a reflective QoS mechanism when the decision result is a performing QoS mechanism for the UE.

 The PCC rules and/or QoS rules of the formulated reflected QoS mechanism are the same for the QoS class identifier QCI and/or the allocation hold priority ARP of the PCC rules and/or QoS rules of the uplink and downlink of the same service data flow.

 The decision result obtaining module is further configured to obtain, from an ePDG, a P-GW, or a fixed broadband policy control function entity BPCF, a decision result of whether to perform a reflective QoS mechanism.

 An embodiment of the present invention further provides a method for instructing a UE to perform a reflective QoS mechanism, including:

 In the tunnel establishment authentication process, the third generation partner program authentication and authorization charging 3GPP AAA server determines that the UE performs reflection when the UE accesses through the BBF access network according to the local IP address or the access network type of the UE. QoS mechanism.

 The method also includes:

 And determining, by the 3GPP AAA server, whether the UE performs the reflective QoS mechanism according to whether the UE performs a capability indication of a reflective QoS mechanism.

 The 3GPP AAA server obtains the local IP address or access network type of the UE from the ePDG or the P-GW.

An embodiment of the present invention further provides a 3GPP AAA server that indicates a reflection QoS mechanism. include:

 a judging module, configured to determine, according to a local IP address or an access network type of the UE, whether the UE accesses through the BBF access network during the tunnel establishment authentication process;

 And an indication module, configured to instruct the UE to perform a reflective QoS mechanism when determining that the UE accesses from the BBF access network.

 The 3GPP AAA server further includes: an obtaining module, configured to obtain, from an ePDG or a P-GW, a local IP address or an access network type of the UE.

 The 3GPP AAA server further includes: a decision module, configured to determine whether the UE performs the reflective QoS mechanism according to whether the UE performs a capability indication of a reflective QoS mechanism.

 A method, a system, and a PCRF for implementing a reflection QoS mechanism according to an embodiment of the present invention, in a tunnel establishment authentication process or an access authentication process, a 3GPP AAA server determines whether a UE performs a reflection QoS mechanism; and the PCRF obtains whether to perform reflection The decision result of the QoS mechanism is formulated according to the decision result and provided to the BBF access network for execution. The present invention can support all the access scenarios of the interworking between the 3GPP and the BBF, and the network can effectively control whether the UE performs the reflective QoS mechanism, and can protect the legitimate UE and prevent the illegal UE from occupying the network resources. DRAWINGS

 FIG. 1 is a schematic diagram of a composition structure of an existing EPS network;

 2 is a schematic diagram of an architecture of a UE accessing a 3GPP core network through a WLAN access network in the prior art;

 FIG. 3 is a flowchart of a method for implementing a reflected QoS mechanism according to an embodiment of the present invention; FIG. 4 is a schematic diagram of a method for a UE to access a 3GPP core network through a non-trusted BBF access network in a non-roaming scenario according to an embodiment of the present invention; Flowchart 1 for performing a policy decision by implementing a Reflective QoS mechanism;

FIG. 5 is a schematic diagram of a UE accessing a 3GPP core through an untrusted BBF access network according to an embodiment of the present invention; In the network and non-roaming scenario, the flow chart 2 of the network makes a policy decision on whether the UE performs the Reflective QoS mechanism;

 FIG. 6 is a flowchart 1 of a policy for a UE to perform a reflective QoS mechanism on a UE when a UE accesses a 3GPP core network by using a DSMHV6 protocol through a fixed broadband access network according to an embodiment of the present invention;

 FIG. 7 is a flowchart 2 of a policy for a UE to perform a reflective QoS mechanism on a UE when a UE accesses a 3GPP core network through a fixed broadband access network and a DSMHV6 protocol according to an embodiment of the present invention;

 FIG. 8 is a flowchart of a policy decision made by a network to perform a Reflective QoS mechanism on a UE in a scenario in which a UE accesses a fixed-band access service through a fixed broadband access network according to an embodiment of the present invention;

 9 is a schematic structural diagram of a PCRF according to an embodiment of the present invention;

 FIG. 10 is a schematic structural diagram of a 3GPP AAA server indicating a reflection QoS mechanism according to an embodiment of the present invention. detailed description

 The technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments. A method for implementing a reflection QoS mechanism provided by an embodiment of the present invention is shown in FIG. 3, and the method mainly includes the following steps:

 Step 301: During the tunnel establishment authentication process or the access authentication process, the 3GPP AAA server determines whether the UE performs the Reflective QoS mechanism.

 The 3GPP AAA server may decide whether the UE performs a reflective QoS mechanism according to whether the UE notifies the capability indication of performing the reflected QoS mechanism.

 Step 302: The PCRF obtains a decision result of whether to perform a reflection QoS mechanism, and formulates a corresponding policy according to the decision result and provides the BBF access network for execution.

Specifically, if the 3GPP AAA server determines that the UE performs the reflective QoS mechanism, the PCRF formulates a PCC rule and/or a QoS rule that reflects the QoS mechanism; if the 3GPP AAA server decides The UE does not perform a reflection QoS mechanism, and the PCRF formulates PCC rules and/or QoS rules that are not reflective QoS mechanisms. The PCC rules and/or QoS rules of the reflected QoS mechanism defined by the PCRF are QoS Class Identifiers (QCIs) and/or allocations for PCC rules and/or QoS rules in the uplink and downlink directions of the same service data flow. The priority (ARP, Allocation and Retention Priority) is the same.

 Preferably, if the 3GPP AAA server decides that the UE performs a reflective QoS mechanism, the PCRF may provide an indication to the BBF access network to perform a reflective QoS mechanism.

 Preferably, before the 3GPP AAA server determines whether the UE performs the reflective QoS mechanism, the 3GPP AAA server determines, according to the local IP address or the access network type of the UE provided by the ePDG or the P-GW, that the UE accesses through the BBF. Network access

 Alternatively, the 3GPP AAA server determines, according to the access network type or the local configuration of the BBF access network report, that the UE accesses through the BBF access network.

 Preferably, the PCRF can obtain the decision result of whether to perform the reflective QoS mechanism from the ePDG, P-GW or BPCF.

 The embodiment of the present invention further provides a system for implementing a reflective QoS mechanism, including: a 3GPP AAA server and a PCRF. The 3GPP AAA server is configured to determine whether the UE performs the reverse according to the decision result and provides the BBF access network for execution in the tunnel establishment authentication process or the access authentication process.

 The 3GPP AAA server is further configured to: determine whether the UE performs a reflective QoS mechanism according to whether the capability indication of the reflected QoS mechanism is performed by the UE.

The PCRF is further configured to: when the 3GPP AAA server determines that the UE performs the reflective QoS mechanism, formulate a PCC rule and/or a QoS rule that reflects the QoS mechanism; when the 3GPP AAA server determines that the UE does not perform the reflected QoS mechanism, formulating a non-reflective QoS mechanism PCC rules and / or QoS rules. Among them, the PCC rules and/or QoS rules of the reflected QoS mechanism formulated by the PCRF Then, the QCI and/or ARP of the PCC rules and/or QoS rules in the uplink and downlink directions of the same service data flow are the same.

 The PCRF is further configured to provide an indication to the BBF access network to perform a reflective QoS mechanism when the 3GPP AAA server decides that the UE performs the reflected QoS mechanism.

 The 3GPP AAA server is further configured to determine, according to the local IP address or the access network type of the UE that is provided by the ePDG or the P-GW, that the UE accesses through the BBF access network, before determining whether the UE performs the reflective QoS mechanism. ;

 Or determining, according to the access network type or local configuration of the BBF access network report, that the UE accesses through the BBF access network.

 The 3GPP AAA server may also be configured to obtain, from the ePDG, the P-GW, or the BPCF, a decision result of whether to perform the reflected QoS mechanism.

 In addition, the embodiment of the present invention further provides a PCRF that implements a reflection QoS mechanism, and its composition structure is as shown in FIG. 9, which mainly includes: a decision result obtaining module 10 and a policy formulating module 20. The decision result obtaining module 10 is configured to obtain, in a tunnel establishment authentication or an access authentication process, a decision result for whether the UE performs a reflection QoS mechanism, and the policy formulation module 20 is configured to formulate a corresponding policy according to the decision result. Provided to the BBF access network for execution.

 The strategy formulation module 20 is also used to

 When the result of the decision is that the UE performs the reflection QoS mechanism, the PCC rule and/or the QoS rule of the reflection QoS mechanism is formulated, and the PCC rule and/or the QoS rule of the reflection QoS mechanism is the PCC rule for the uplink and the downlink direction of the same service data flow. Same as / or QoS rule QCI and / or ARP;

 When the decision result is that the UE does not perform the reflective QoS mechanism, a PCC rule and/or a QoS rule that is not a reflection QoS mechanism is formulated.

The PCRF further includes: an indication sending module 30, and a connection decision result obtaining module 10, configured to provide a performing reflection QoS machine to the BBF access network when the decision result is a performing QoS mechanism for the UE Instructions.

 The decision result obtaining module 10 is further configured to obtain, from the ePDG, the P-GW, or the BPCF, a decision result of whether to perform the reflective QoS mechanism.

 The embodiment of the present invention further provides a method for instructing a UE to perform a reflective QoS mechanism, which mainly includes:

 During the tunnel establishment authentication process, the 3GPP AAA server determines that the UE performs a reflective QoS mechanism when the UE accesses the BBF access network according to the local IP address or the access network type of the UE.

 The 3GPP AAA server determines whether the UE performs the reflective QoS mechanism according to whether the UE performs a capability indication of a reflective QoS mechanism.

 The 3GPP AAA server obtains the local IP address or access network type of the UE from the ePDG or the P-GW.

 Corresponding to the foregoing method for instructing the UE to perform the reflective QoS mechanism, the embodiment of the present invention further provides a 3GPP AAA server indicating a reflective QoS mechanism, and its component structure is as shown in FIG. 10, which mainly includes:

 The determining module 40 is configured to determine, according to the local IP address or the access network type of the UE, whether the UE accesses through the BBF access network during the tunnel establishment authentication process;

 The indicating module 50 is configured to, when determining that the UE accesses from the BBF access network, instruct the UE to perform a reflective QoS mechanism.

 Preferably, the 3GPP AAA server further includes: an obtaining module 60, a connection determining module 40, configured to obtain a local IP address or an access network type of the UE from an ePDG or a P-GW; and a decision module 70, configured to Whether the UE performs a capability indication of a reflection QoS mechanism, and determines whether the UE performs the reflection QoS mechanism.

The above method and system for implementing the Reflective QoS mechanism are further elaborated below in conjunction with specific embodiments. As shown in FIG. 4, FIG. 4 is a flow of a policy for a UE to perform a policy decision on whether a UE performs a Reflective QoS mechanism in a non-roaming scenario when a UE accesses a 3GPP core network through an untrusted BBF access network. In Figure 4, the GPRS Tunnel Protocol (GTP) protocol is adopted between the ePDG and the P-GW. The process mainly includes the following steps:

 Step 401: Optionally, after the UE accesses the BBF access system, perform 3GPP-based access authentication, and the UE provides an International Mobile Subscriber Identification Number (IMSSI) for access authentication.

 In the access authentication process, the 3GPP AAA server determines whether the UE performs a reflective QoS mechanism and notifies the UE of the decision. Optionally, the UE first notifies the 3GPP AAA server of its capability indication of whether to perform the reflective QoS mechanism, and the 3GPP AAA server further determines, according to the capability indication, whether the UE performs a reflective QoS mechanism.

 Step 402: The UE obtains a local IP address from the BBF access network, and the address is allocated by a home gateway (RG, Residential Gateway) or a BNG.

 Step 403: Receive the trigger of step 401 or step 402, and the BPCF is notified that the UE accesses the BBF access network. If in step 401, the 3GPP AAA makes a decision on whether the UE performs a reflective QoS mechanism, the BPCF obtains the decision result.

 Step 404: The BPCF sends a gateway control session establishment message to the PCRF, where the user identifier and the local IP address of the UE are carried. If the BPCF obtains the decision result of whether the UE performs the reflective QoS mechanism in step 403, the BPCF sends the decision result to the PCRF.

 Step 405: The PCRF returns a gateway control session establishment confirmation message to the BPCF.

 Optionally, the PCRF needs to interact with the SPR to obtain a user's subscription user policy decision.

Step 406: After selecting the ePDG, the UE initiates an Internet Key Exchange Protocol (IKEv2) tunnel establishment process, and uses an Extensible Authentication Protocol (EAP) for authentication. If the UE and the ePDG have NA(P)T (if there is NA(P)T on the RG), the IKEv2 signaling will perform Network Address Translation (NAT). Crossing. During the establishment of the IPSec tunnel, the 3GPP AAA server determines whether the UE performs a reflective QoS mechanism and notifies the UE of the decision, and the ePDG can obtain the decision.

 Optionally, the UE first notifies the 3GPP AAA server of whether the capability indication of the reflective QoS mechanism is performed, and the 3GPP AAA server further determines, according to the capability indication, whether the UE performs a reflective QoS mechanism.

 Optionally, the ePDG further sends the local IP address or the access network type to the 3GPP AAA server, and the 3GPP AAA server determines, according to the local IP address or the access network type, the UE accesses through the BBF access network, thereby further determining whether the UE is Perform a reflective QoS mechanism.

 Since the IKEv2 signaling may pass through the NA(P)T traversal, the source address and source port number received by the ePDG may be different from the source address and the source port number when the UE sends. If the NA (P) T traversal is not passed, the source address is the local IP address obtained by the UE when accessing the BBF access network.

 For a scenario where there is no NA(P)T between the UE and the ePDG, the source address of the IKEv2 signaling sent by the ePDG is the local IP address allocated by the BBF access network, and the address can uniquely identify that the UE is The service data flow encapsulated by the IPSec tunnel.

 For the scenario where there is a (1: 1) NAT between the UE and the ePDG, the source address of the IKEv2 signaling sent by the ePDG is the public IP address after the NAT, but since it is (1:1) NAT, The address can still uniquely identify the service data stream that the UE is encapsulated by the IPSec tunnel.

For the scenario where there is (N: 1) NAT (ie, NAPT) between the UE and the ePDG, the service data flow needs to be encapsulated by the User Datagram Protocol (UDP) when traversing the NAT. The NAPT allocates the source for the IPSec tunnel. UDP port number (for the uplink direction of the UE). Therefore, in order to uniquely identify the service data flow encapsulated by the IPSec tunnel, the source address of the IKEv2 signaling sent by the UE received by the ePDG (that is, the public IP address after the BBF access network NAT is obtained, if the NAT is located, RG, the address is the address of the RG) and the source port number of the IKEv2 signaling sent by the UE received by the ePDG (that is, the IPSec source UDP end) Slogan).

 For convenience of description, the IP address of the UE by the NAT is also referred to as a local IP address.

 Step 407: After selecting the P-GW, the ePDG sends a Create Session Request message to the P-GW, where the Create Session Request message carries the UE identity, the Packet Data Network (PDN) identifier, and the local IP address and Source UDP port number (if ΝΑ(Ρ)Τ is detected, the message carries the source UDP port number).

 The ePDG may also send a decision of the network obtained in step 406 to determine whether the UE performs a reflective QoS mechanism to the P-GW.

 Step 408: The P-GW allocates an IP address to the UE, and the PCEF located in the P-GW sends an IP-CAN session establishment indication message to the PCRF, where the IP-CAN session establishment indication message carries the user identifier of the UE, the PDN identifier, and is the UE. The assigned IP address, the UE local IP address, and the source UDP port number (if NA(P)T is detected, the message carries the source UDP port number). At the same time, the P-GW also sends a decision to the network to determine whether the UE performs a reflective QoS mechanism.

 Step 409: When the PCRF formulates the PCC rule, in addition to considering the subscription data, the network policy, and the access network attribute, the UE determines whether the UE performs the reflective QoS mechanism according to the network. If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be established, that is, the QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QoS Class Identifier (QCI) and/or The ARP, Allocation and Retention Priority are the same; if the network determines that the UE does not perform the Reflective QoS mechanism, then the PCC rule that is not the Reflective QoS mechanism can be established, that is, the QoS of the PCC rule in the upstream and downstream directions of the same service data flow is not The same, that is, QCI and / or ARP are not the same.

 The PCRF sends the established PCC rules to the PCEF via an IP-CAN session establishment confirmation message. Further, the PCRF formulates QoS rules according to PCC rules.

Step 410: The P-GW sends an update P-GW IP address message to the AAA Server, and sends the P-GW address to the AAA Server, and the AAA Server further interacts with the HSS and the P-GW ground. The address is saved to the HSS.

 Step 411: The P-GW returns a create session acknowledgement message to the ePDG, where the created session acknowledgement message carries an IP address allocated for the UE.

 Step 412: An IPSec tunnel is established between the UE and the ePDG.

 Step 413: The ePDG sends the last IKEv2 signaling to the UE, where the IP address of the UE is carried.

 Step 414, if step 404, step 405 is performed, the PCRF performs a gateway control and QoS rule providing process, and provides the BPCF with the UE local IP address and the source UDP port number (if NA(P)T is detected, the source UDP port number is provided. ), as well as the established QoS rules.

 If step 404 and step 405 are not performed, the PCRF performs a gateway control session establishment procedure initiated by the PCRF, and provides the BPCF with the UE local IP address and the source UDP port number (if the NA(P)T is detected, the source UDP port number is provided) , as well as the established QoS rules.

 In step 415, the BPCF provides the policy to the BNG/Broadband Remote Access Server (BRAS).

Through the above process, the UE obtains a decision of the network to determine whether the UE performs the Reflective QoS mechanism, and the PCRF also obtains the decision. Thereafter, when the UE needs to allocate resources for the service access, the PCRF will consider the decision information when formulating the PCC rule. Specifically: If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be formulated, that is, The QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same. If the network determines that the UE does not perform the Reflective QoS mechanism, the PCC rule that is not the Reflective QoS mechanism, that is, the same service data, may be formulated. The QoS of PCC rules in the upstream and downstream directions is different, that is, QCI and/or ARP are different. The PCRF then sends the QoS information of the formulated PCC rules to the BPCF for the BBF access network to perform admission control and policy enforcement. The BBF access network can be mapped to a specific DSCP according to the QCI and/or the ARP. Therefore, the BBF access network can determine each DSCP corresponding to each UE according to the policy provided by the PCRF. Bandwidth.

 Of course, the PCRF can also notify the BBF access network whether the UE performs the Reflective QoS mechanism by providing an explicit indication of whether the Reflective QoS mechanism is implemented to the BBF access network. For example, when performing the Reflective QoS mechanism, the PCRF provides an indication to the BPCF to perform the Reflective QoS mechanism. At this time, the BBF access network can know that the QCI and/or the ARP of the same service data flow of the UE are the same (even if the PCRF is sent. The QCI and/or ARP in the PCC rules or QoS rules are different).

 In the prior art, the BBF access network can implement the bandwidth limitation of the per UE per DSCP. Therefore, in combination with the embodiment of the present invention, the PCRF sends different policies to the BBF for determining whether the network allows the UE to perform the Reflective QoS mechanism. The BBF access network can effectively control whether the UE performs the Reflective QoS mechanism, especially for UEs that do not perform the Reflective QoS mechanism according to the network decision.

 The second embodiment of the present invention is shown in FIG. 5. FIG. 5 is a flow chart of a policy decision made by the UE to perform a Reflective QoS mechanism on the UE when the UE accesses the 3GPP core network through the untrusted BBF access network in a non-roaming scenario. In Figure 5, the Proxy Mobile IPv6 (ΡΜΙΡνό) protocol is used between the ePDG and the P-GW. The process mainly includes the following steps:

 Steps 501 to 506 are the same as steps 401 to 406, and are not described here.

 Step 507: The ePDG sends a gateway control session setup message to the PCRF, where the user identifier, the PDN identifier, and the local IP address and the source UDP port number of the UE are carried. (If ΝΑ(Ρ)Τ is detected, the message carries the source UDP port number. ).

 The ePDG may also send a decision of the network obtained in step 506 to determine whether the UE performs a reflective QoS mechanism to the PCRF.

 Step 508: The PCRF returns a gateway control session establishment confirmation message to the ePDG.

Step 509: After selecting the P-GW, the ePDG sends a proxy binding update message to the P-GW, where the proxy binding update message carries the user identifier and the PDN identifier of the UE. Step 510: The P-GW allocates an IP address to the UE, and the PCEF located in the P-GW sends an IP-CAN session establishment indication message to the PCRF, where the IP-CAN session establishment indication message carries the user identifier of the UE, the PDN identifier, and is the UE. The assigned IP address.

 Step 511: The PCRF determines, according to the user identifier and the PDN identifier, that if there is no relevant user subscription data, the PCRF will interact with the SPR to obtain the subscription information. When the PCRF formulates the PCC rules, in addition to considering the subscription data, network policy, and access network attributes, it is also necessary to decide whether the UE performs the reflective QoS mechanism according to the network. If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be established, that is, the QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same; Reflective QoS mechanism, then PCC rules that are not Reflective QoS mechanisms can be established. That is, the QoS of PCC rules in the upstream and downstream directions of the same service data flow is different, that is, QCI and/or ARP are different.

 The PCRF sends the established PCC rules to the PCEF via an IP-CAN session establishment confirmation message. Further, the PCRF formulates QoS rules according to PCC rules.

 Step 512: The P-GW sends an update P-GW IP address message to the AAA Server, and sends the P-GW address to the AAA server. The AAA Server further interacts with the HSS and saves the P-GW address to the HSS.

 Step 513: The P-GW returns a proxy binding acknowledgement message to the ePDG, where the proxy binding acknowledgement message carries an IP address assigned to the UE.

 Step 514, the proxy binding update is successful, and an IPSec tunnel is established between the UE and the ePDG. Step 515: The ePDG sends the last IKEv2 signaling to the UE, where the IP address of the UE is carried.

Step 516, if step 504, step 505 is performed, the PCRF performs a gateway control and QoS rule providing process, and provides the BPCF with the UE local IP address and the source UDP port number (if NA(P)T is detected, the source UDP port number is provided. ), as well as the established QoS rules. If there is no step Step 404: Step 405, the PCRF performs a gateway control session establishment procedure initiated by the PCRF, and provides the BPCF with the UE local IP address and the source UDP port number (if the NA(P)T is detected, the source UDP port number is provided), and QoS rules.

 Step 517, BPCF provides the policy to BNG/BRAS.

 Through the above process, the UE obtains a decision of the network to determine whether the UE performs the Reflective QoS mechanism, and the PCRF also obtains the decision. Thereafter, when the UE needs to allocate resources for the service access, the PCRF will consider the decision information when formulating the PCC rule. Specifically: If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be formulated, that is, The QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same. If the network determines that the UE does not perform the Reflective QoS mechanism, the PCC rule that is not the Reflective QoS mechanism, that is, the same service data, may be formulated. The QoS of PCC rules in the upstream and downstream directions is different, that is, QCI and/or ARP are different. The PCRF then sends the QoS information of the formulated PCC rules to the BPCF for the BBF access network to perform admission control and policy enforcement. The BBF access network can be mapped to a specific DSCP according to QCI and/or ARP. Therefore, the BBF access network can determine the bandwidth corresponding to each DSCP of each UE according to the policy provided by the PCRF.

 Of course, the PCRF can also notify the BBF access network whether the UE performs the Reflective QoS mechanism by providing an explicit indication of whether the Reflective QoS mechanism is implemented to the BBF access network. For example, when performing the Reflective QoS mechanism, the PCRF provides an indication to the BPCF to perform the Reflective QoS mechanism. At this time, the BBF access network can know that the QCI and/or the ARP of the same service data flow of the UE are the same (even if the PCRF is sent. The QCI and/or ARP in the PCC rules or QoS rules are different).

In the prior art, the BBF access network can implement the bandwidth limitation of the per UE per DSCP. Therefore, in combination with the embodiment of the present invention, the PCRF sends different policies to the BBF for determining whether the network allows the UE to perform the Reflective QoS mechanism. Network, BBF access network can be used for UE Whether to implement the Reflective QoS mechanism for effective control, especially for UEs that do not implement the Reflective QoS mechanism according to network decisions.

 The third embodiment of the present invention is shown in FIG. 6. FIG. 6 is a flow chart of a policy decision made by the UE to perform a Reflective QoS mechanism on the UE when the UE accesses the 3GPP core network by using the DSMIPv6 protocol through the fixed broadband access network. In Figure 6, the fixed broadband access network acts as a trusted non-3GPP access network. The process mainly includes the following steps:

 Step 601: Optionally, the UE performs a 3GPP-based access authentication process in which the fixed broadband access network participates.

 In the access authentication process, the 3GPP AAA server determines whether the UE performs a reflective QoS mechanism and notifies the UE of the decision. Optionally, the UE first notifies the 3GPP AAA server of whether the capability indication of the reflective QoS mechanism is performed, and the 3GPP AAA server further determines, according to the capability indication, whether the UE performs a reflective QoS mechanism.

 Step 602: The UE obtains a local IP address from the fixed broadband access network as the care-of address CoA of the UE.

 In step 603, the triggering of step 601 and step 602, the BPCF learns that the UE is accessing the fixed broadband access network. If in step 601, the 3GPP AAA makes a decision on whether the UE performs a reflective QoS mechanism, the BPCF obtains the decision result.

 Step 604: After receiving the trigger, the BPCF initiates a gateway control session establishment to the PCRF. The BPCF carries the user ID and IP-CAN type in the message. If the BPCF obtains the decision result of whether the UE performs the reflective QoS mechanism in step 603, the BPCF sends the decision result to the PCRF.

In step 605, the UE performs a Bootstraping process. The UE discovers the P-GW. To protect the DSMHV6 message between the UE and the P-GW, the UE uses IKEv2 to establish a security association and uses EAP for authentication. The P-GW communicates with the AAA Server (the AAA Server further interacts with the HSS) to complete the EAP authentication, and the P-GW allocates an IPv6 address to the UE. The UE constructs an IPv6 address according to the prefix as the home address (HoA) of the UE. During the establishment of the IPSec tunnel, the 3GPP AAA server determines whether the UE performs a reflective QoS mechanism and notifies the UE of the decision, and the ePDG can obtain the decision.

 Optionally, the UE first notifies the 3GPP AAA server of whether the capability indication of the reflective QoS mechanism is performed, and the 3GPP AAA server further determines, according to the capability indication, whether the UE performs a reflective QoS mechanism.

 Optionally, the ePDG further sends the local IP address or the access network type to the 3GPP AAA server, and the 3GPP AAA server determines, according to the local IP address or the access network type, the UE accesses through the BBF access network, thereby further determining whether the UE is Perform a reflective QoS mechanism.

 Step 606: The UE sends a DSMHV6 binding update message to the P-GW, where the HoA and the CoA are carried.

 Step 607: The P-GW sends an IP-CAN session establishment indication message to the PCRF, where the message carries the user identifier of the UE, the HoA, the UE local address (ie, the CoA), and the source UDP port number. If the NAT is detected, the message carries the source. UDP port number).

 Step 608: When the PCRF formulates the PCC rule, in addition to considering the subscription data, the network policy, and the access network attribute, the UE determines whether the UE performs the reflective QoS mechanism according to the network. If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be established, that is, the QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same; Reflective QoS mechanism, then PCC rules that are not Reflective QoS mechanisms can be established. That is, the QoS of PCC rules in the upstream and downstream directions of the same service data flow is different, that is, QCI and/or ARP are different.

 The PCRF sends the established PCC rules to the PCEF via an IP-CAN session establishment confirmation message. Further, the PCRF formulates QoS rules according to PCC rules. The PCRF returns an acknowledgement message to the PCEF carrying the PCC rules.

Step 609: The P-GW returns a binding acknowledgement message to the UE. Step 610: If step 604 is performed, the PCRF performs a gateway control and QoS rule providing process, and provides the BPCF with the UE local IP address and the source UDP port number (if the NA(P)T is detected, the source UDP port number is provided), and Developed QoS rules. If step 604 is not performed, the PCRF performs a gateway control session establishment procedure initiated by the PCRF, and provides the BPCF with the UE local IP address and the source UDP port number (if the NA(P)T is detected, the source UDP port number is provided), and QoS rules.

 In step 611, the BPCF provides the policy to the BNG/BRAS.

 Through the above process, the UE obtains a decision of the network to determine whether the UE performs the Reflective QoS mechanism, and the PCRF also obtains the decision. Thereafter, when the UE needs to allocate resources for the service access, the PCRF will consider the decision information when formulating the PCC rule. Specifically: If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be formulated, that is, The QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same. If the network determines that the UE does not perform the Reflective QoS mechanism, the PCC rule that is not the Reflective QoS mechanism, that is, the same service data, may be formulated. The QoS of PCC rules in the upstream and downstream directions is different, that is, QCI and/or ARP are different. The PCRF then sends the QoS information of the formulated PCC rules to the BPCF for the BBF access network to perform admission control and policy enforcement. The BBF access network can be mapped to a specific DSCP according to QCI and/or ARP. Therefore, the BBF access network can determine the bandwidth corresponding to each DSCP of each UE according to the policy provided by the PCRF.

Of course, the PCRF can also notify the BBF access network whether the UE performs the Reflective QoS mechanism by providing the BBF access network with an explicit indication of whether to implement the Reflective QoS mechanism. For example, when performing the Reflective QoS mechanism, the PCRF provides an indication to the BPCF to perform the Reflective QoS mechanism. At this time, the BBF access network can know that the QCI and/or the ARP of the same service data flow of the UE are the same (even if the PCRF is sent. The QCI and/or ARP in the PCC rules or QoS rules are different). In the prior art, the BBF access network can implement the bandwidth limitation of the per UE per DSCP. Therefore, in combination with the embodiment of the present invention, the PCRF sends different policies to the BBF for determining whether the network allows the UE to perform the Reflective QoS mechanism. The BBF access network can effectively control whether the UE performs the Reflective QoS mechanism, especially for UEs that do not perform the Reflective QoS mechanism according to the network decision.

 The fourth embodiment of the present invention is shown in FIG. 7. FIG. 7 is a flow chart of a policy decision made by the UE to perform a Reflective QoS mechanism on the UE when the UE accesses the 3GPP core network by using the DSMIPv6 protocol through the fixed broadband access network. In Figure 7, the fixed broadband access network acts as an untrusted non-3GPP access network. The process mainly includes the following steps:

 Steps 701 to 704 are the same as steps 601 to 604.

 Step 705: The UE initiates an IKEv2 tunnel establishment process, and uses EAP for authentication. The ePDG interacts with the AAA Server (the AAA Server further interacts with the HSS) to complete EAP authentication. During the establishment of the IPSec tunnel, the 3GPP AAA server determines whether the UE performs a reflective QoS mechanism and notifies the UE of the decision, and the ePDG can obtain the decision.

 Optionally, the UE first notifies the 3GPP AAA server of whether the capability indication of the reflective QoS mechanism is performed, and the 3GPP AAA server further determines, according to the capability indication, whether the UE performs a reflective QoS mechanism.

 Optionally, the ePDG may further send the local IP address or the access network type to the 3GPP AAA server, and the 3GPP AAA server determines, according to the local IP address or the access network type, the UE accesses through the BBF access network, thereby further determining whether the UE is Perform a reflective QoS mechanism.

 Step 706: The ePDG sends a gateway control session setup message to the PCRF, where the gateway control session setup message carries the UE user identifier, the PDN identifier, the local IP address, and the source UDP port number. (If NA(P)T is detected, the message is sent. The source UDP port number is carried in).

The ePDG may also send a decision of the network obtained in step 705 to determine whether the UE performs a reflective QoS mechanism to the PCRF. Step 707: The PCRF sends a gateway control session establishment confirmation message to the ePDG. Step 708, ePDG IKEv2 message last sent to the UE, which carries a promising IP address allocated to the UE, the UE IP address as the care-of address (CoA) ₀

 Step 709: An IPSec tunnel is established between the UE and the ePDG.

In step 710, the UE performs a Bootstraping process. The UE performs a domain name (DNS) lookup according to the access point name (APN, Access Point Name) to obtain the IP address of the P-GW to which the PDN is to be accessed. To protect the DSMIPv6 message between the UE and the P-GW, the UE uses IKEv2 to establish a security association and uses EAP for authentication. P-GW and the AAA Server (AAA Server further interaction with the HSS) communicates to the EAP authentication is completed, while the P-GW UE allocated IPv6 address or a prefix of the home address of the UE (HoA) ₀ to

 Step 711: The UE sends a DSMIPv6 binding update message to the P-GW. The DSMIPv6 binding update message carries CoA and HoA, and the lifetime parameter in the binding message is not zero. The P-GW establishes a binding context.

 Step 712: The PCEF in the P-GW sends an IP-CAN session establishment indication message to the PCRF, where the IP-CAN session establishment indication message carries the user identifier and PDN identifier of the UE.

 Step 713: When the PCRF formulates the PCC rule, in addition to considering the subscription data, the network policy, and the access network attribute, the UE determines whether the UE performs the reflective QoS mechanism according to the network. If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be established, that is, the QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same; Reflective QoS mechanism, then PCC rules that are not Reflective QoS mechanisms can be established. That is, the QoS of PCC rules in the upstream and downstream directions of the same service data flow is different, that is, QCI and/or ARP are different.

The PCRF sends the established PCC rules to the PCEF via an IP-CAN session establishment confirmation message. Further, the PCRF formulates QoS rules according to PCC rules. The PCRF returns an acknowledgement message to the PCEF, which carries the PCC rule. Step 714: The P-GW returns a binding acknowledgement message to the UE.

 Step 715, if step 704 is performed, the PCRF performs a gateway control and QoS rule providing process, and provides the BPCF with the UE local IP address and the source UDP port number (if the NA(P)T is detected, the source UDP port number is provided), and Developed QoS rules. If step 704 is not performed, the PCRF performs a gateway control session establishment procedure initiated by the PCRF, and provides the BPCF with the UE local IP address and the source UDP port number (if the NA(P)T is detected, the source UDP port number is provided), and QoS rules.

 In step 716, the BPCF provides the policy to the BNG/BRAS.

 Through the above process, the UE obtains a decision of the network to determine whether the UE performs the Reflective QoS mechanism, and the PCRF also obtains the decision. Thereafter, when the UE needs to allocate resources for the service access, the PCRF will consider the decision information when formulating the PCC rule. Specifically: If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be formulated, that is, The QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same. If the network determines that the UE does not perform the Reflective QoS mechanism, the PCC rule that is not the Reflective QoS mechanism, that is, the same service data, may be formulated. The QoS of PCC rules in the upstream and downstream directions is different, that is, QCI and/or ARP are different. The PCRF then sends the QoS information of the formulated PCC rules to the BPCF for the BBF access network to perform admission control and policy enforcement. The BBF access network can be mapped to a specific DSCP according to QCI and/or ARP. Therefore, the BBF access network can determine the bandwidth corresponding to each DSCP of each UE according to the policy provided by the PCRF.

Of course, the PCRF can also notify the BBF access network whether the UE performs the Reflective QoS mechanism by providing the BBF access network with an explicit indication of whether to implement the Reflective QoS mechanism. For example, when performing the Reflective QoS mechanism, the PCRF provides an indication to the BPCF to perform the Reflective QoS mechanism. At this time, the BBF access network can know that the QCI and/or the ARP of the same service data flow of the UE are the same (even if the PCRF is sent. In the PCC rules or QoS rules QCI and / or ARP are different).

 In the prior art, the BBF access network can implement the bandwidth limitation of the per UE per DSCP. Therefore, in combination with the embodiment of the present invention, the PCRF sends different policies to the BBF for determining whether the network allows the UE to perform the Reflective QoS mechanism. The BBF access network can effectively control whether the UE performs the Reflective QoS mechanism, especially for UEs that do not perform the Reflective QoS mechanism according to the network decision.

 The fifth embodiment of the present invention is shown in FIG. 8. FIG. 8 is a flow chart of a policy decision made by the network to perform a Reflective QoS mechanism on the UE in a scenario where the UE accesses the mobile service through the fixed broadband access network. In the scenario of offloading service access, it is mandatory for the UE to access the BBF access network to perform 3GPP-based access authentication. The process mainly includes the following steps:

 Step 801: After the UE accesses the BBF access system, perform 3GPP-based access authentication, and the UE provides IMSK for access authentication. The 3GPP AAA server determines whether the UE performs a reflective QoS mechanism and notifies the UE of the decision.

 Optionally, the 3GPP AAA determines, according to the access network type or local configuration of the BBF access network report (such as determining, according to the BBF AAA that interacts with the 3GPP AAA, that the UE accesses through the BBF access network), determining that the UE accesses through the BBF access network. , thereby further determining whether the UE performs a reflective QoS mechanism.

 Optionally, the UE first notifies the 3GPP AAA server of whether the capability indication of the reflective QoS mechanism is performed, and the 3GPP AAA server further determines, according to the capability indication, whether the UE performs a reflective QoS mechanism.

 Step 802: The UE obtains a local IP address from the BBF access network, and the address may be allocated by using RG or BNG.

Step 803: Receive the trigger of step 801 or step 802, and the BPCF is notified that the UE accesses the BBF access network. The BPCF obtains the decision result of the 3GPP AAA making a decision on whether the UE performs the reflective QoS mechanism. Step 804: The BPCF sends a gateway control session setup message to the PCRF, where the UE carries the user identifier, the local IP address, and the decision result of whether the UE performs the reflective QoS mechanism.

 Step 805: The PCRF returns a gateway control session establishment confirmation message to the BPCF. The PCRF may need to interact with the SPR to obtain the user's contracted user policy decision. When the PCRF formulates PCC or QoS rules, in addition to considering subscription data, network policies, and access network attributes, it is also determined by the network whether the UE performs a reflective QoS mechanism. If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be established, that is, the QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same; Reflective QoS mechanism, then PCC or QoS rules that are not Reflective QoS mechanisms can be formulated. That is, the QoS of PCC or QoS rules in the upstream and downstream directions of the same service data flow is different, that is, QCI and/or ARP are different.

 The PCRF sends the established PCC or QoS rules to the BPCF via a confirmation message. The PCRF returns an acknowledgement message to the BPCF, which carries the PCC or QoS rules.

 In step 806, the BPCF further provides a policy to the BNG for policy execution.

Through the above process, the UE obtains a decision of the network to determine whether the UE performs the Reflective QoS mechanism, and the PCRF also obtains the decision. Thereafter, when the UE needs to allocate resources for the service access, the PCRF will consider the decision information when formulating the PCC rule. Specifically: If the network determines that the UE performs the Reflective QoS mechanism, then the PCC rule of the Reflective QoS mechanism is to be formulated, that is, The QoS of the PCC rule in the uplink and downlink directions of the same service data flow is the same, that is, the QCI and/or the ARP are the same; if the network determines that the UE does not perform the Reflective QoS mechanism, then a PCC or QoS rule that is not a Reflective QoS mechanism may be established, that is, the same The QoS of the PCC or QoS rules in the upstream and downstream directions of the service data flow is different, that is, the QCI and/or the ARP are different. The PCRF then sends the QoS information of the formulated PCC or QoS rules to the BPCF for the BBF access network to perform admission control and policy enforcement. BBF access network can be based on QCI and / or ARP Mapping to a specific DSCP, therefore, the BBF access network can determine the bandwidth corresponding to each DSCP of each UE according to the policy provided by the PCRF.

 Of course, the PCRF can also notify the BBF access network whether the UE performs the Reflective QoS mechanism by providing an explicit indication of whether the Reflective QoS mechanism is implemented to the BBF access network. For example, when performing the Reflective QoS mechanism, the PCRF provides an indication to the BPCF to perform the Reflective QoS mechanism. At this time, the BBF access network can know that the QCI and/or the ARP of the same service data flow of the UE are the same (even if the PCRF is sent. The QCI and/or ARP in the PCC rules or QoS rules are different).

 In the prior art, the BBF access network can implement the bandwidth limitation of the per UE per DSCP. Therefore, in combination with the embodiment of the present invention, the PCRF sends different policies to the BBF for determining whether the network allows the UE to perform the Reflective QoS mechanism. The BBF access network can effectively control whether the UE performs the Reflective QoS mechanism, especially for UEs that do not perform the Reflective QoS mechanism according to the network decision.

 The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim  A method for implementing a reflective QoS mechanism, the method comprising:  In the tunnel establishment authentication or access authentication process, the third generation partner program authentication authorization charging 3GPP AAA server determines whether the user equipment UE performs a reflective quality of service QoS mechanism;  The PCRF obtains the decision result of whether to perform the reflection QoS mechanism, and formulates a corresponding policy according to the decision result and provides it to the broadband forum BBF access network for execution.  2. The method for implementing a reflective QoS mechanism according to claim 1, wherein the method further comprises:  The 3GPP AAA server determines whether the UE performs a reflective QoS mechanism according to whether the UE notifies whether the capability of the reflected QoS mechanism is performed.  The method for implementing a reflection QoS mechanism according to claim 1 or 2, wherein the PCRF formulates a corresponding policy according to the decision result, specifically:  If the 3GPP AAA server determines that the UE performs a reflection QoS mechanism, the PCRF formulates a policy and charging control PCC rule and/or QoS rule for the reflection QoS mechanism; if the 3GPP AAA server determines that the UE does not perform the reflection QoS mechanism, The PCRF formulates PCC rules and/or QoS rules that are not reflective QoS mechanisms.  The method for implementing a reflection QoS mechanism according to claim 1 or 2, wherein the PCRF formulates a corresponding policy according to the decision result, specifically:  If the 3GPP AAA server decides that the UE performs a reflective QoS mechanism, the PCRF provides an indication to the BBF access network to perform a reflective QoS mechanism.  The method for implementing a reflective QoS mechanism according to claim 1 or 2, wherein before the 3GPP AAA server determines whether the UE performs the reflective QoS mechanism, the method further includes: The 3GPP AAA server according to the evolved packet data gateway ePDG or packet data The local IP address or the access network type of the UE provided by the network gateway P-GW determines that the UE accesses through the BBF access network.  The method for implementing a reflective QoS mechanism according to claim 1 or 2, wherein before the 3GPP AAA server determines whether the UE performs the reflective QoS mechanism, the method further includes:  The 3GPP AAA server determines, according to the access network type or the local configuration of the BBF access network report, that the UE accesses through the BBF access network.  The method for implementing a reflection QoS mechanism according to claim 3, wherein the PCC rule and/or QoS rule of the reflected QoS mechanism formulated by the PCRF is a PCC rule and/or QoS for uplink and downlink directions of the same service data flow. The QoS class identifier of the rule identifies the QCI and/or the allocation hold priority ARP.  The method for implementing a reflection QoS mechanism according to claim 1 or 2, wherein the method further comprises:  The PCRF obtains the decision result of whether to perform the reflection QoS mechanism from the ePDG, the P-GW, or the fixed broadband policy control function entity BPCF.  9. A system for implementing a reflective QoS mechanism, the system comprising: a third generation partner plan authentication and authorization charging 3GPP AAA server, a policy and charging rule functional entity PCRF, wherein  The 3GPP AAA server is configured to: determine whether the user equipment UE performs a reflective quality of service QoS mechanism in a tunnel establishment authentication or an access authentication process;  The PCRF is configured to obtain a decision result of whether to perform the reflective QoS mechanism, and formulate a corresponding policy according to the decision result and provide the BBF access network to the broadband forum for execution. The system for implementing a reflection QoS mechanism according to claim 9, wherein the 3GPP AAA server is further configured to: determine whether the UE performs a reflection QoS mechanism according to whether the UE notifies the capability indication of performing a reflection QoS mechanism. 11. The system for implementing a reflection QoS mechanism according to claim 9 or 10, wherein the PCRF is further used,  When the 3GPP AAA server decides that the UE performs a reflective QoS mechanism, the PCRF formulates a policy and charging control PCC rules and/or QoS rules for the reflective QoS mechanism;  When the 3GPP AAA server decides that the UE does not perform the reflective QoS mechanism, the PCRF formulates PCC rules and/or QoS rules that are not reflective QoS mechanisms.  The system for implementing a reflection QoS mechanism according to claim 9 or 10, wherein the PCRF is further configured to: when the 3GPP AAA server determines that the UE performs a reflection QoS mechanism, the PCRF accesses the BBF access network. Provides an indication to perform a reflective QoS mechanism.  The system for implementing a reflection QoS mechanism according to claim 9 or 10, wherein the 3GPP AAA server is further configured to: before the determining whether the UE performs the reflection QoS mechanism, according to the UE provided by the ePDG or the P-GW The local IP address or the access network type determines that the UE accesses through the BBF access network.  The system for implementing the reflected QoS mechanism according to claim 9 or 10, wherein the 3GPP AAA server is further configured to: before determining whether the UE performs the reflective QoS mechanism, accessing the online access network according to the BBF The type or local configuration determines that the UE is accessed through the BBF access network.  15. The system for implementing a reflective QoS mechanism according to claim 11, wherein the PCC rules and/or QoS rules of the reflected QoS mechanism formulated by the PCRF are, for the same industry The system for implementing a reflection QoS mechanism according to claim 9 or 10, wherein the PCRF is further configured to obtain, according to the ePDG, the P-GW, or the fixed broadband policy control function entity BPCF, whether to perform the reflection QoS mechanism. Decision result.  17. A PCRF that implements a reflection QoS mechanism, including: a decision result obtaining module, configured to obtain a tunnel authentication or access authentication process A decision result for the user equipment UE to perform a reflection quality of service QoS mechanism; a policy formulation module, configured to formulate a corresponding policy according to the decision result and provide the broadband forum BBF access network for execution.  The PCRF for implementing a reflection QoS mechanism according to claim 17, wherein the policy formulation module is further configured to:  When the decision result is that the UE performs the reflective QoS mechanism, the policy and charging control PCC rules and/or QoS rules of the reflective QoS mechanism are formulated;  When the decision result is that the UE does not perform the reflective QoS mechanism, a PCC rule and/or a QoS rule that is not a reflection QoS mechanism is formulated.  The PCRF implementing the reflection QoS mechanism according to claim 17 or 18, further comprising: an indication sending module, configured to provide execution to the BBF access network when the decision result is that the UE performs a reflective QoS mechanism An indication of the reflection QoS mechanism.  20. The PCRF implementing the reflected QoS mechanism according to claim 18, wherein the PCC rule and/or QoS rule of the formulated reflected QoS mechanism is a PCC rule and/or a QoS rule for uplink and downlink directions of the same service data flow. The QoS class identifier QCI and/or the allocation hold priority ARP are the same.  The PCRF implementing the reflection QoS mechanism according to claim 17 or 18, wherein the decision result obtaining module is further configured to: obtain, by the ePDG, the P-GW, or the fixed broadband policy control function entity BPCF, whether to perform the reflection The decision result of the QoS mechanism.  22. A method for instructing a UE to perform a reflective QoS mechanism, comprising:  In the tunnel establishment authentication process, the third generation partner program authentication and authorization charging 3GPP AAA server determines that the UE performs reflection when the UE accesses through the BBF access network according to the local IP address or the access network type of the UE. QoS mechanism. The method for instructing a UE to perform a reflection QoS mechanism according to claim 22, wherein the method further comprises: And determining, by the 3GPP AAA server, whether the UE performs the reflective QoS mechanism according to whether the UE performs a capability indication of a reflective QoS mechanism.  24. The method of claim 22, wherein the 3GPP AAA server obtains a local IP address or an access network type of the UE from an ePDG or a P-GW.  25. A 3GPP AAA server indicating a reflection QoS mechanism, comprising:  a judging module, configured to determine, according to a local IP address or an access network type of the UE, whether the UE accesses through the BBF access network during the tunnel establishment authentication process;  And an indication module, configured to instruct the UE to perform a reflective QoS mechanism when determining that the UE accesses from the BBF access network.  The 3GPP AAA server of the indication QoS mechanism according to claim 25, wherein the 3GPP AAA server further comprises: an obtaining module, configured to obtain a local IP address or an access network type of the UE from an ePDG or a P-GW .  The 3GPP AAA server according to claim 25, wherein the 3GPP AAA server further includes: a decision module, configured to determine whether the UE performs according to whether the UE performs a capability indication of a reflective QoS mechanism The reflection QoS mechanism.