CN1852384A - Method for realizing policy and charging rule decision - Google Patents

Abstract

The present invention provides a method for implementing policy and charging rule decision-making, the core of which is: when the unified trigger decision-making conditions of roaming users and non-roaming users are met, through the PCRF unit between the application server and policy and charging rule decision-making function The information interaction determines the ruling result corresponding to the roaming user/non-roaming user policy and charging rule service parameters, and transmits the ruling result to the access device. The present invention unifies the triggering decision-making conditions of roaming users and non-roaming users, so that PCRF makes decisions on roaming users and non-roaming users at the same time, and at the same time reduces the implementation complexity of specific devices; thus the technical solution provided by the present invention realizes The purpose of reducing the cost of decision-making.

Description

A Method for Implementing Policy and Charging Rule Decision

technical field

The invention relates to the technical field of network communication, in particular to a method for realizing policy and charging rule decision-making.

Background technique

A schematic diagram of connection of a user equipment to an IMS network through a specific access gateway is shown in FIG. 1 .

In Figure 1, when the AF (Application Server) and AGW (Access Gateway) of the IMS network are combined, it is necessary to make local decisions on user policies such as QoS (Quality of Service), charging rules and other business parameters, so as to provide users with corresponding access service.

At present, the specific implementation process of making decisions for user policies and charging rules is shown in Figure 2 and Figure 3 . Figure 2 is a flow chart of the IMS network making decisions on user policies and charging rules in a roaming scenario, and Figure 3 is a flow chart of the IMS network making decisions on user policies and charging rules in a non-roaming scene.

In Fig. 2, in step 2-1, the user equipment UE requests a service from the AF, transmits service parameters to the AF, and starts negotiating service parameters with the AF.

In step 2-2, when the AF determines that the user is a roaming user according to the user's service application, the AF connects to the user's HPCRF (Home Policy and Charging Rules Functional Entity), and transmits the negotiated service parameters to the HPCRF, requesting The HPCRF makes a ruling on the negotiated service parameters.

In step 2-3, the HPCRF conducts a local policy decision on the received service parameters according to the local policy, and feeds back the IP layer decision result to the AF.

Going to step 2-4, the AF transmits the ruling result it receives to the user equipment.

In step 2-5, after receiving the decision result, the user equipment sends an access request to the access gateway.

Going to step 2-6, the AGW transmits the relevant information identifying the service parameters in the access request to the user's VPCRF (Roaming Policy and Charging Rules Function Entity).

Going to step 2-6#, the VPCRF determines the HPCRF of the user according to the received relevant information identifying the service parameters, and requests the HPCRF for the corresponding ruling result of the user according to the service flow identification information.

Going to step 2-7#, when the HPCRF determines that the user is a roaming user, it transmits the stored IP layer ruling result corresponding to the user to the VPCRF.

Going to step 2-7, VPCRF continues to conduct local policy ruling on the IP layer ruling result it receives according to the local policy, and transmits the IP layer ruling result judged by HPCRF and VPCRF to the AGW, thus completing the IMS network’s strategy for roaming users, The decision-making process of billing rules.

In the above decision-making process, the cooperation order of each functional unit is:

UE→AF→HPCRF→AF→UE→AGW→VPCRF→HPCRF→VPCRF→AGW.

In FIG. 3 , in step 3-1, the user equipment requests a service from the AF, transmits service parameters to the AF, and starts negotiating service parameters with the AF.

In step 3-2, when the AF determines that the user is a non-roaming user according to the service application it receives, it transmits the negotiated service parameters to the user equipment.

In step 3-3, the user equipment receives the negotiated service parameters and transmits them to the AGW through the access request.

Going to step 3-4, the AGW requests the PCRF for the IP layer ruling result corresponding to the user according to the service flow identification information carried in the access request.

Going to step 3-5, when the PCRF determines that the user is a non-roaming user, it requests the negotiated service parameters corresponding to the user from the AF.

Going to step 3-6, the AF transmits the negotiated service parameters corresponding to the user to the PCRF.

In steps 3-7, the PCRF conducts a local policy decision on the received service parameters according to the local policy, and feeds back the IP layer decision result to the AGW, thereby completing the decision-making process of the IMS network's policy and charging rules for non-roaming users.

In the above decision-making process, the cooperation order of each functional unit is:

UE→AF→UE→AGW→HPCRF→AF→HPCRF→AGW.

From the above description of the process and the cooperation sequence of each functional unit, it can be seen that since the timing of PCRF making decisions on roaming users and non-roaming users is different, the processing procedures for AF and PCRF to make decisions on roaming users and non-roaming users are different. The upper service layer such as the application layer of AF and the policy decision-making layer of PCRF need to perceive the roaming attributes of users, and carry out different decision-making processes according to different roaming attributes, which increases the complexity of the decision-making process and increases the complexity of the application layer and policy decision-making layer. The design complexity increases the implementation complexity of specific equipment, which ultimately leads to high cost of decision-making implementation.

Contents of the invention

The purpose of the present invention is to provide a policy and charging rule decision-making implementation method, which simplifies the policy and charging rule decision-making process by setting unified trigger decision-making conditions for roaming users and non-roaming users.

In order to achieve the above purpose, the present invention provides a method for implementing policy and charging rule decision-making, including:

When the unified trigger decision-making conditions for roaming users and non-roaming users are met, determine the policy and charging rule service parameters corresponding to roaming users/non-roaming users through the information interaction between the application server and the policy and charging rule decision function PCRF unit a ruling result, and transmit the ruling result to the access device.

The decision triggering condition is: a request for a decision result from an application server or a request for a decision result from an access gateway.

The trigger decision-making condition is: a request for a ruling result from an application server;

And the method specifically includes the steps of:

a1. The application server receives the service request of the roaming user/non-roaming user, and negotiates service parameters with the user;

b1. The application server requests the PCRF unit to arbitrate the negotiated service parameters;

c1. The PCRF unit transmits the ruling result to the user equipment through the application server;

d1. When the access gateway receives the access request of the roaming user/non-roaming user, it obtains the IP layer ruling result corresponding to the user from the PCRF.

For non-roaming users, the step d1 specifically includes:

The access gateway obtains the service flow identification information from the access request of the non-roaming user, and requests the PCRF unit for an IP layer ruling result corresponding to the user according to the service flow identification information;

The PCRF unit returns the stored IP layer ruling result corresponding to the user to the access gateway according to the service flow identification information.

For roaming users, the step c1 specifically includes:

The user's HPCRF unit judges the service parameters according to the local policy, and transmits the IP layer ruling result to the user equipment through the application server;

And the step d1 specifically includes:

The access gateway obtains the service flow identification information from the roaming user's access request, and requests the roaming user's VPCRF unit for an IP layer ruling result corresponding to the user according to the service flow identification information;

The VPCRF unit requests a ruling result from the HPCRF unit of the roaming user according to the service flow identification information;

The HPCRF unit transmits the stored IP layer ruling result corresponding to the user to the VPCRF unit;

The VPCRF unit continues to adjudicate the received adjudication results according to the local policy, and transmits the IP layer adjudication results adjudicated by the HPCRF unit and the VPCRF unit to the access gateway.

For roaming users, the step c1 specifically includes:

The HPCRF unit of the roaming user judges the service parameters according to the local policy, and transmits the IP layer ruling result to the VPCRF unit of the roaming user;

The VPCRF unit continues to adjudicate the adjudication result it receives according to the local policy, and feeds back the IP layer adjudication result adjudicated by the HPCRF unit and the VPCRF unit to the HPCRF unit of the roaming user;

The HPCRF unit transmits the IP layer ruling result it receives to the application server, and the application server transmits the service layer ruling result to the user equipment.

And the step d1 specifically includes:

The access gateway obtains service flow identification information from the roaming user's access request, and requests the user's corresponding IP layer ruling result from the roaming user's VPCRF unit according to the service flow identification information;

The VPCRF unit transmits the stored IP layer ruling result of the user corresponding to the HPCRF and VPCRF units to the access gateway.

The triggering decision condition is: a request for a ruling result of the access gateway;

And the method specifically includes:

a2. The application server negotiates service parameters with the user equipment according to the service request of the roaming user/non-roaming user, and transmits the negotiated service parameters to the user equipment;

b2. The access gateway acquires service flow identification information from the access request of the roaming user/non-roaming user, and requests the PCRF unit for an IP layer ruling result corresponding to the user according to the service flow identification information;

c2. The PCRF unit acquires the negotiated service parameters from the application server, and judges the negotiated service parameters according to a local policy, and at the same time, transmits the IP layer ruling result to the access gateway.

For roaming users, the step c2 specifically includes:

The VPCRF unit of the roaming user requests the IP layer ruling result corresponding to the user from the HPCRF unit of the roaming user according to the service flow identification information;

The HPCRF unit obtains the negotiated service parameters corresponding to the user from the application server, and makes a decision according to the local policy, and transmits the decision result to the VPCRF unit of the roaming user;

The VPCRF unit continues to adjudicate the IP layer adjudication results it receives according to the local policy, and transmits the IP layer adjudication results adjudicated by the HPCRF and VPCRF units to the access gateway.

A method for implementing policy and charging rule decision-making provided by the present invention includes steps:

x1. The application server negotiates policy and charging rule service parameters with the user equipment according to the service request received from the roaming user/non-roaming user, and transmits the negotiated service parameters to the user equipment;

x2. When the access device receives an access request from a roaming user/non-roaming user, it requests the PCRF unit for the IP layer ruling result of the user according to the service flow identification information carried in the access request;

x3. The PCRF unit judges the negotiated service parameters obtained from the application server according to the local policy, and transmits the IP layer ruling result to the access device.

A method for implementing policy and charging rule decision-making provided by the present invention includes steps:

y1. When the application server receives a service request from a roaming user/non-roaming user, it negotiates service parameters with the user equipment, and requests the PCRF unit to make a ruling on the negotiated service parameters;

y2. The application server transmits the ruling result of the PCRF unit to the user equipment;

y3. When the access gateway receives the access request from the roaming user/non-roaming user, it requests the PCRF unit for the IP layer ruling result of the user according to the service flow identification information carried in the access request;

y4. The PCRF unit transmits the IP layer ruling result to the access device.

A method for implementing policy and charging rule decision-making provided by the present invention includes steps:

x1', the application server negotiates policy and charging rule service parameters with the user equipment according to the service request received from the roaming user, and transmits the negotiated service parameters to the user equipment;

x2', when the access device receives the access request from the roaming user, it requests the PCRF unit for the IP layer ruling result of the user according to the service flow identification information carried in the access request;

x3'. The PCRF unit judges the negotiated service parameters obtained from the application server according to the local policy, and transmits the IP layer ruling result to the access device.

Described step x3' specifically comprises:

The VPCRF unit of the roaming user requests the IP layer ruling result corresponding to the user from the HPCRF unit of the roaming user according to the service flow identification information;

The HPCRF unit obtains the negotiated service parameters corresponding to the user from the application server, and makes a decision according to the local policy, and transmits the decision result to the VPCRF unit of the roaming user;

The VPCRF unit continues to adjudicate the IP layer adjudication results it receives according to the local policy, and transmits the IP layer adjudication results adjudicated by the HPCRF and VPCRF units to the access gateway.

The present invention also provides a method for implementing policy and charging rule decision-making, including steps:

y1', when the application server receives the service request from the roaming user, it negotiates service parameters with the user equipment, and requests the VPCRF and HPCRF units to arbitrate the negotiated service parameters;

y2', the application server transmits the ruling results of the VPCRF and HPCRF units to the user equipment;

y3', when the access gateway receives the access request of the roaming user, it requests the IP layer ruling result of the user from the VPCRF unit according to the service flow identification information carried in the access request;

y4', the VPCRF unit transmits the IP layer ruling result to the access device.

Described step y2' specifically comprises:

The HPCRF unit of the roaming user judges the service parameters according to the local policy, and transmits the IP layer ruling result to the VPCRF unit of the roaming user;

The VPCRF unit continues to adjudicate the adjudication result it receives according to the local policy, and feeds back the IP layer adjudication result adjudicated by the HPCRF unit and the VPCRF unit to the HPCRF unit of the roaming user;

The HPCRF unit transmits the IP layer ruling result it receives to the application server, and the application server transmits the service layer ruling result to the user equipment.

From the description of the above technical solution, it can be known that the present invention unifies the trigger decision-making conditions of roaming users and non-roaming users, so that HPCRF makes decisions on roaming users and non-roaming users The decision-making process of policies and charging rules is unified with the decision-making process of IMS network policies and charging rules for users in roaming scenarios, avoiding the process of AF and PCRF judging user roaming attributes and selecting different processing procedures, such as AF When receiving the service request from the user equipment, and when the PCRF receives the user judgment result request transmitted by the AGW, it can take the same process for roaming users and non-roaming users, so that the application layer and policy decision-making layer do not need to perceive the user's The roaming attribute simplifies the design of the application layer and the policy decision-making layer, simplifies the decision-making implementation process, and reduces the implementation complexity of specific devices; thus, the purpose of reducing the decision-making implementation cost is achieved through the technical solution provided by the present invention.

Description of drawings

FIG. 1 is a schematic diagram of a user accessing an IMS network through a specific access gateway;

Fig. 2 is a flow chart of decision-making on roaming user's policy and charging rules in the prior art;

Fig. 3 is a flow chart of decision-making on policies and charging rules for non-roaming users in the prior art;

Fig. 4 is the flow chart 1 of decision-making to the policy of the non-roaming user, charging rule of the present invention;

Fig. 5 is a flow chart 1 of decision-making on roaming user's policy and charging rules in the present invention;

FIG. 6 is the second flow chart of decision-making on policy and charging rules for roaming users in the present invention.

Detailed ways

If roaming users and non-roaming users can use the same decision-making opportunity to make policy and charging rule business parameter decisions, the policy and charging rule decision-making process of roaming users and non-roaming users can be unified, thereby simplifying the application Layer and policy decision-making layer design, simplifying the decision-making process.

Therefore, the core of the present invention is: when the unified trigger decision-making condition of the roaming user and the non-roaming user is satisfied, determine the strategy of the roaming user/non-roaming user through the information interaction between the application server and the policy and charging rule decision function PCRF unit An adjudication result corresponding to the service parameter of the charging rule is generated, and the adjudication result is transmitted to the access device.

The three specific implementation methods provided by the present invention will be further described below based on the core idea of the present invention and in conjunction with the accompanying drawings.

Method 1: Unify the policy and charging rule decision-making process of roaming users and non-roaming users based on the triggering decision-making conditions of the ruling result request of the application server.

This method is actually a modification of the decision-making process for user policies and charging rules in the prior art non-roaming scenario. The modified decision-making process is shown in Figure 4.

In Figure 4, in step 4-1, the user requests a service from the AF, and transmits policy and charging rule service parameters to the AF, and the user negotiates service parameters with the AF, and proceeds to step 4-2 after the service parameter negotiation is completed.

In step 4-2, the AF connects to the PCRF entity of the user, and transmits the negotiated service parameters to the PCRF unit, requests the PCRF unit to make a decision on the negotiated service parameters, and the PCRF unit conducts a judgment on the received service parameters according to the local policy. Local policy ruling.

In step 4-3, the PCRF unit feeds back the IP layer ruling result to the AF.

Going to step 4-4, the AF converts the IP layer ruling result it receives into a service layer ruling result and transmits it to the user equipment. The ruling results delivered by the AF to the user equipment include QoS policy information and the like.

Going to step 4-5, the user equipment receives the ruling result of the service layer, and transmits it to the AGW through the access request. Since the credibility of the user is poor, the AGW needs to request the PCRF for the ruling result corresponding to the user, so as to confirm the service parameters requested by the user. The ruling results requested by the AGW include QoS policy information and charging rules.

Going to step 4-6, the AGW obtains the service flow identification information from the information carried in the access request, and carries it in the service parameter confirmation request and transmits it to the PCRF unit of the user, so as to request the PCRF for the corresponding IP layer ruling result of the user.

Going to step 4-7, after receiving the confirmation request, the PCRF unit transmits the stored IP layer decision result corresponding to the user to the AGW according to the service flow identifier carried by the confirmation request. In this way, the decision-making process of policies and charging rules for non-roaming users is completed.

In the above decision-making process, the cooperation order of each functional unit is:

UE→AF→PCRF→AF→UE→AGW→PCRF→AGW

Method 1 Make decisions on non-roaming user policies and charging rules through the flow described in Figure 4, and make decisions on roaming user policies and charging rules through the flow described in Figure 2, due to the cooperation of the functional units in Figure 2 The order is:

UE→AF→HPCRF→AF→UE→AGW→VPCRF→HPCRF→VPCRF→AGW, comparing the above two cooperation sequences, it can be seen that the decision-making process of the IMS network for the user's policy and charging rules in the non-roaming scenario of the present invention is the same as In the roaming scenario, the decision-making process of the IMS network for the user's policy and charging rules is basically the same, so that when the AF receives the service request from the user equipment, the PCRF confirms the service parameter after receiving the service parameter information transmitted by the AGW. When requesting, there is no need to judge the roaming attribute of the user, that is, in step 4-2 in Figure 4, the AF does not need to judge the roaming attribute of the user according to the service application, and directly transmits the negotiated service parameters to the PCRF , which is the same as step 2-2 in Figure 2; in step 4-7 in Figure 4, after receiving the service parameter confirmation request transmitted by the AGW, the PCRF does not need to determine the roaming attributes of the user, and directly uses the service flow identification information It only needs to transfer the stored IP layer ruling result corresponding to the user to the AGW, which is the same as step 2-7# and step 2-7 in FIG. 2 . Therefore, the upper service layer of the AF and PCRF does not need to perceive the roaming attribute of the user, simplifies the decision-making implementation process, and reduces the implementation complexity of specific devices.

Method 2: Unify the policy and charging rule decision-making process of roaming users and non-roaming users based on the triggering decision-making conditions of the access gateway's ruling result request, that is, the service parameter confirmation request.

This method is actually a modification of the policy and charging rule decision-making process for users in roaming scenarios in the prior art, and the modified decision-making process is shown in Figure 5 .

In Fig. 5, in step 5-1, the user equipment requests a service from the AF, transmits service parameters to the AF, and starts negotiating service parameters with the AF.

In step 5-2, the AF transmits the negotiated service parameters of the service layer to the user equipment. The negotiated service parameters delivered by the AF to the user equipment, such as QoS policy information, etc.

Going to step 5-3, the user equipment receives the negotiated service parameters, and transmits them to the AGW through the access request.

Going to step 5-4, the AGW transmits the service parameter confirmation request carrying the relevant information of the identified service parameter to the VPCRF of the user, and requests the VPCRF for the corresponding ruling result of the user, so as to confirm the service parameter requested by the user. The ruling results requested by the AGW include QoS policy information and charging rules.

Go to step 5-4#, VPCRF determines the HPCRF of the user according to the service parameter confirmation request that it receives and carries the relevant information of the identification service parameter, and continues to request IP layer ruling from the HPCRF of the roaming user according to the service flow identification information in the confirmation request As a result, the ruling results requested in this step are QoS policy information and charging rules, etc.

Going to step 5-5, after receiving the confirmation request, the HPCRF requests the negotiated service parameters corresponding to the roaming user from the AF according to the service flow identification information.

Going to step 5-6, the AF transmits the negotiated service parameters corresponding to the roaming user to the HPCRF.

Going to step 5-6#, the HPCRF makes a local policy decision on the received service parameters according to the local policy, and feeds back the IP layer decision result to the VPCRF.

Going to step 5-7, VPCRF continues to judge the IP layer ruling results it receives according to the local policy, and feeds back the IP layer ruling results that have been judged by HPCRF and VPCRF to AGW, so as to complete the policy and charging of roaming users in the IMS network Rules for the decision-making process.

In the above decision-making process, the cooperation order of each functional unit is:

UE→AF→UE→AGW→VPCRF→HPCRF→AF→HPCRF→VPCRF→AGW.

Method 2 Make decisions on roaming user policies and charging rules through the flow described in Figure 5, and make decisions on non-roaming user policies and charging rules through the flow described in Figure 3, due to the cooperation of each functional unit in Figure 3 The sequence is: UE→AF→UE→AGW→HPCRF→AF→HPCRF→AGW. Comparing the above two cooperation sequences, it can be known that the IMS network in the roaming scenario of the present invention makes decisions about user policies and charging rules different from non-roaming In the scenario, the decision-making process of the IMS network for user policies and charging rules is basically the same, so that when the AF receives the service application from the user equipment, and when the PCRF receives the service parameter confirmation request transmitted by the AGW, there is no need for user roaming The attribute judgment process, that is, in step 5-2 of Figure 5, AF does not need to judge the roaming attribute of the user according to the service application, and can directly transmit the negotiated service parameters to the user equipment, which is similar to step 3-2 of Figure 3. 2 are the same; in steps 5-5 of Figure 5, after receiving the service flow identification information transmitted by the VPCRF, the HPCRF does not need to determine the roaming attributes of the user, but directly requests the AF for the negotiated service parameters corresponding to the user. Same as steps 3-5 in Figure 3. Therefore, the upper service layer of the AF and PCRF does not need to perceive the roaming attribute of the user, simplifies the decision-making implementation process, and reduces the implementation complexity of specific devices.

Method 3: Based on the triggering decision-making conditions of the application server's ruling result request, the decision-making process of policy and charging rules for roaming users and non-roaming users is unified on the basis of method 1.

This method is actually based on method 1, while modifying the user policy and charging rule decision-making process in the roaming scenario of the prior art. The modified process is shown in Figure 4 and Figure 6 .

The process of FIG. 4 has been described in Method 1 and will not be described here again.

In FIG. 6 , in step 6-1, the user equipment requests a service from the AF, transmits service parameters to the AF, and starts negotiating service parameters with the AF.

In step 6-2, the AF connects to the HPCRF entity of the user, transmits the negotiated service parameters to the HPCRF unit, and requests the HPCRF unit to make a decision on the negotiated service parameters.

Going to step 6-2#, the HPCRF unit judges the negotiated service parameters it receives according to the local policy, and transmits the IP layer ruling result to the roaming user's VPCRF unit.

Go to step 6-3#, the VPCRF unit of the roaming user continues to judge the ruling result it receives according to the local policy, and transmits the IP layer ruling result judged by the HPCRF unit and the VPCRF unit to the HPPCRF of the roaming user. In this step, the IP layer ruling results transmitted by the VPCRF unit to the HPCRF unit, such as QoS policy information and charging rules, etc.

Going to step 6-3, the HPCRF of the roaming user feeds back the IP layer ruling result received by the HPCRF and VPCRF units to the AF. In this step, the HPCRF feeds back the IP layer ruling results to the AF, such as QoS policy information and charging rules.

Going to step 6-4, the AF receives the IP layer ruling result judged by the HPCRF and VPCRF units, converts it into a service layer ruling result, and transmits it to the user equipment. In this step, the ruling result of the service layer transmitted by the AF to the user equipment is, for example, QoS policy information.

Going to step 6-5, the user equipment receives the ruling result of the service layer, and transmits it to the AGW through the access request.

In step 6-6, the AGW needs to request the roaming user’s VPCRF for the IP layer ruling result of the roaming user according to the service flow identification information in the access request, and the AGW transmits the service parameter confirmation request carrying information related to the service parameter identification to the User's VPCRF. The ruling results requested from the VPCRF in this step include QoS policy information and charging rules.

Go to step 6-7, VPCRF transmits the IP layer ruling result stored by HPCRF and VPCRF units to AGW according to the service flow identification information carried in the confirmation request, so as to complete the IMS network policy and charging rules for roaming users Decision-making process.

In Method 3, in the decision-making process corresponding to non-roaming users, the cooperation order of each functional unit is as follows:

UE→AF→PCRF→AF→UE→AGW→PCRF→AGW.

Method 3 Make decisions on roaming user policies and charging rules through the flow described in Figure 4, and make decisions on non-roaming user policies and charging rules through the flow described in Figure 6, due to the cooperation of the functional units in Figure 4 The sequence is: UE→AF→UE→AGW→HPCRF→AF→HPCRF→AGW. Comparing the above two cooperation sequences, it can be known that the IMS network in the roaming scenario of the present invention makes decisions about user policies and charging rules different from non-roaming In the scenario, the decision-making process of the IMS network for user policies and charging rules is basically the same, so that when the AF receives the service application from the user equipment, and when the PCRF receives the access request from the AGW that carries information related to identifying service parameters , there is no need to determine the roaming attribute of the user, that is, in steps 4-2 and 6-2 in Fig. 4 and Fig. 6, AF does not need to judge the roaming attribute of the user according to the service application, and directly transfers the negotiated service parameter It only needs to be transmitted to HPCRF; in steps 4-7 and 6-7 in Figure 4 and Figure 6, PCRF does not need to determine the roaming status of the user after receiving the service parameter confirmation request carrying the service flow identification information transmitted by the AGW. attributes, and the stored IP layer ruling results can be directly fed back to the AGW. Therefore, the upper service layer of the AF and PCRF does not need to perceive the roaming attribute of the user, simplifies the decision-making implementation process, and reduces the implementation complexity of specific devices.

Although the present invention has been described by way of example, those of ordinary skill in the art know that there are many variations and changes in the present invention without departing from the spirit of the invention, and the claims of the application document of the present invention include these variations and changes.

Claims (14)

1. A method for implementing policy and charging rule decision-making, characterized in that it includes: When the unified trigger decision-making conditions for roaming users and non-roaming users are met, determine the policy and charging rule service parameters corresponding to roaming users/non-roaming users through the information interaction between the application server and the policy and charging rule decision function PCRF unit a ruling result, and transmit the ruling result to the access device. 2. The method for implementing policy and charging rule decision-making according to claim 1, wherein the triggering decision-making condition is: a decision result request from an application server or a decision result request from an access gateway. 3. A method for implementing policy and charging rule decision-making according to claim 2, characterized in that, the triggering decision-making condition is: a request for a ruling result from an application server; And the method specifically includes the steps of: a1. The application server receives the service request of the roaming user/non-roaming user, and negotiates service parameters with the user; b1. The application server requests the PCRF unit to arbitrate the negotiated service parameters; c1. The PCRF unit transmits the ruling result to the user equipment through the application server; d1. When the access gateway receives the access request of the roaming user/non-roaming user, it obtains the IP layer ruling result corresponding to the user from the PCRF. 4. A method for implementing policy and charging rule decision-making according to claim 3, characterized in that, for non-roaming users, the step d1 specifically includes: The access gateway obtains the service flow identification information from the access request of the non-roaming user, and requests the PCRF unit for an IP layer ruling result corresponding to the user according to the service flow identification information; The PCRF unit returns the stored IP layer ruling result corresponding to the user to the access gateway according to the service flow identification information. 5. A method for implementing policy and charging rule decision-making according to claim 3, characterized in that, for roaming users, the step c1 specifically includes: The user's HPCRF unit judges the service parameters according to the local policy, and transmits the IP layer ruling result to the user equipment through the application server; And the step d1 specifically includes: The access gateway obtains the service flow identification information from the roaming user's access request, and requests the roaming user's VPCRF unit for an IP layer ruling result corresponding to the user according to the service flow identification information; The VPCRF unit requests a ruling result from the HPCRF unit of the roaming user according to the service flow identification information; The HPCRF unit transmits the stored 'layer ruling result' corresponding to the user to the VPCRF unit; The VPCRF unit continues to adjudicate the received adjudication results according to the local policy, and transmits the IP layer adjudication results adjudicated by the HPCRF unit and the VPCRF unit to the access gateway. 6. A method for implementing policy and charging rule decision-making according to claim 3, characterized in that, for roaming users, the step c1 specifically includes: The HPCRF unit of the roaming user judges the service parameters according to the local policy, and transmits the IP layer ruling result to the VPCRF unit of the roaming user; The VPCRF unit continues to adjudicate the adjudication result it receives according to the local policy, and feeds back the IP layer adjudication result adjudicated by the HPCRF unit and the VPCRF unit to the HPCRF unit of the roaming user; The HPCRF unit transmits the IP layer ruling result it receives to the application server, and the application server transmits the service layer ruling result to the user equipment. And the step d1 specifically includes: The access gateway obtains service flow identification information from the roaming user's access request, and requests the user's corresponding IP layer ruling result from the roaming user's VPCRF unit according to the service flow identification information; The VPCRF unit transmits the stored IP layer ruling result of the user corresponding to the HPCRF and VPCRF units to the access gateway. 7. The method for implementing policy and charging rule decision-making according to claim 2, characterized in that, the triggering decision-making condition is: a decision result request from the access gateway; And the method specifically includes: a2. The application server negotiates service parameters with the user equipment according to the service request of the roaming user/non-roaming user, and transmits the negotiated service parameters to the user equipment; b2. The access gateway acquires service flow identification information from the access request of the roaming user/non-roaming user, and requests the PCRF unit for an IP layer ruling result corresponding to the user according to the service flow identification information; c2. The PCRF unit acquires the negotiated service parameters from the application server, and judges the negotiated service parameters according to a local policy, and at the same time, transmits the IP layer ruling result to the access gateway. 8. A method for implementing policy and charging rule decision-making according to claim 7, characterized in that, for roaming users, the step c2 specifically includes: The VPCRF unit of the roaming user requests the IP layer ruling result corresponding to the user from the HPCRF unit of the roaming user according to the service flow identification information; The HPCRF unit obtains the negotiated service parameters corresponding to the user from the application server, and makes a decision according to the local policy, and transmits the decision result to the VPCRF unit of the roaming user; The VPCRF unit continues to adjudicate the IP layer adjudication results it receives according to the local policy, and transmits the IP layer adjudication results adjudicated by the HPCRF and VPCRF units to the access gateway. 9. A method for implementing policy and charging rule decision-making, comprising the steps of: x1. The application server negotiates policy and charging rule service parameters with the user equipment according to the service request received from the roaming user/non-roaming user, and transmits the negotiated service parameters to the user equipment; x2. When the access device receives an access request from a roaming user/non-roaming user, it requests the PCRF unit for the IP layer ruling result of the user according to the service flow identification information carried in the access request; x3. The PCRF unit judges the negotiated service parameters obtained from the application server according to the local policy, and transmits the IP layer ruling result to the access device. 10. A method for implementing policy and charging rule decision-making, comprising the steps of: y1. When the application server receives a service request from a roaming user/non-roaming user, it negotiates service parameters with the user equipment, and requests the PCRF unit to make a ruling on the negotiated service parameters; y2. The application server transmits the ruling result of the PCRF unit to the user equipment; y3. When the access gateway receives the access request from the roaming user/non-roaming user, it requests the PCRF unit for the IP layer ruling result of the user according to the service flow identification information carried in the access request; y4. The PCRF unit transmits the IP layer ruling result to the access device. 11. A method for implementing policy and charging rule decision-making, comprising the steps of: x1', the application server negotiates policy and charging rule service parameters with the user equipment according to the service request received from the roaming user, and transmits the negotiated service parameters to the user equipment; x2', when the access device receives the access request from the roaming user, it requests the PCRF unit for the IP layer ruling result of the user according to the service flow identification information carried in the access request; x3'. The PCRF unit judges the negotiated service parameters obtained from the application server according to the local policy, and transmits the IP layer ruling result to the access device. 12. A method for implementing policy and charging rule decision-making according to claim 12, characterized in that said step x3' specifically includes: The VPCRF unit of the roaming user requests the IP layer ruling result corresponding to the user from the HPCRF unit of the roaming user according to the service flow identification information; The HPCRF unit obtains the negotiated service parameters corresponding to the user from the application server, and makes a decision according to the local policy, and transmits the decision result to the VPCRF unit of the roaming user; The VPCRF unit continues to adjudicate the IP layer adjudication results it receives according to the local policy, and transmits the IP layer adjudication results adjudicated by the HPCRF and VPCRF units to the access gateway. 13. A method for implementing policy and charging rule decision-making, comprising the steps of: y1', when the application server receives the service request from the roaming user, it negotiates service parameters with the user equipment, and requests the VPCRF and HPCRF units to arbitrate the negotiated service parameters; y2', the application server transmits the ruling results of the VPCRF and HPCRF units to the user equipment; y3', when the access gateway receives the access request of the roaming user, it requests the IP layer ruling result of the user from the VPCRF unit according to the service flow identification information carried in the access request; y4', the VPCRF unit transmits the IP layer ruling result to the access device. 14. A method for implementing policy and charging rule decision-making according to claim 13, wherein said step y2' specifically includes: The HPCRF unit of the roaming user judges the service parameters according to the local policy, and transmits the IP layer ruling result to the VPCRF unit of the roaming user; The VPCRF unit continues to adjudicate the adjudication result it receives according to the local policy, and feeds back the IP layer adjudication result adjudicated by the HPCRF unit and the VPCRF unit to the HPCRF unit of the roaming user; The HPCRF unit transmits the IP layer ruling result it receives to the application server, and the application server transmits the service layer ruling result to the user equipment.

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