WO2011006373A1

WO2011006373A1 - Cross-domain resource and admission control method and system

Info

Publication number: WO2011006373A1
Application number: PCT/CN2010/071146
Authority: WO
Inventors: 尤建洁; 孙默
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-07-14
Filing date: 2010-03-19
Publication date: 2011-01-20
Also published as: CN101959253B; CN101959253A

Abstract

A cross-domain resource and admission control method is provided. The method includes: after receiving the user request, the user visited network notifies the user home network (31); after receiving the notification from the user visited network, according to the user subscription information, the user home network makes the initial policy rule and returns it to the user visited network (32); according to the initial policy rule made by the user home network, the user visited network makes the final admission decision (33). A cross-domain resource and admission control system is provided accordingly. In the case that the home network operator does not publish its user data to the visited network operator completely, according to the user subscription information, the user visited network performs the authorization checking and makes the initial policy decision, then the user visited network makes the final admission decision, so that the present invention can improve the user experience while ensuring the benefit of the home network operator.

Description

Cross-domain resource admission control method and system

The present invention relates to mobile communication technologies, and in particular, to a cross-domain resource admission control method and system. Background technique

At present, the Next Generation Network (NGN) is a hot research topic in the field of communication standards. It adopts IP packet technology as the bearer network technology and integrates fixed communication and mobile communication, so as to provide rich multimedia services. For example, IP TV, video conferencing, multimedia distance learning, video on demand and other emerging services with real-time requirements, these services require communication networks to provide efficient end-to-end Quality of Service (QoS) support, thus providing end-to-end QoS has become one of the core issues of NGN.

The International Telecommunication Union-Telecommunications Standardization Sector (ITU-T) is the International Telecommunication Union (ITU) telecommunications division, which has established standards for resource admission control, in ITU-T. The latest published Resource and Admission Control Functions (RACF) draft provides a functional framework for RACF. As shown in Figure 1, the RACF consists of two parts, the Policy Decision Functional Entity. , PD-FE) and Transport Resource Control Functional Entity (TRC-FE), where TRC-FE interacts with the transport function through the Rc interface, and performs the functional entity (Transport Resource Enforcement Functional) through the Rn interface and the transport resource. Entity, TRE-FE) interaction, and PD-FE interacts with TRC-FE through Rt interface; PD-FE interacts with Customer Premises Network (CPN) through Rh interface, through Rw interface and policy enforcement function The Policy Enforcement Functional Entity (PE-FE) interacts with the Service Control Functions (SCF) of the service layer through the Rs interface, and interacts with the Network Attachment Control Functions (NACF) through the Ru interface. And the PD-FE interacts with other next-generation networks through the Ri interface.

In addition, the PD-FE is independent of the transmission technology and has nothing to do with the SCF. The PD-FE is based on the network policy rules, the service information provided by the SCF, the transport layer subscription information provided by the NACF, and the resource availability decision result provided by the TRC-FE. The final decision on resource acceptance control.

TRC-FE is not related to the business, but is related to transmission technology. The TRC-FE is responsible for collecting and maintaining transmission network information and resource status information. Upon receiving a resource request from the PD-FE, the TRC-FE performs resource-based admission control based on QoS, priority requirements, resource availability information, and transport-related policy rules.

The transport layer is composed of a PE-FE and a TRE-FE. The PE-FE performs the policy rule delivered by the PD-FE. The PE-FE is a packet-to-packet gateway and can be located between the customer premises network (CPN) and the access network. Between the access network and the core network, or between different carrier networks, it is a key node that supports dynamic QoS control, port address translation control, and Network Address Translator (NAT) traversal. The TRE-FE implements the transmission resource policy rule delivered by the TRC-FE. Its scope and function and the Rn interface need to be further studied, and are not in the scope of the R2 phase.

FIG. 2 is a schematic diagram of a RACF network configuration for solving resource admission control involving inter-domain interaction and supporting nomadism. As shown in FIG. 2, the SCF is located in the NGN visited network and interacts with the PD-FE of the visited network; The PD-FE of the network interacts with the PD-FE of the NGN home network through the Ri interface. The PD-FE of the visited network/home network interacts with the PE-FE and TRC-FE of the visited network/home network through the Rw interface and the Rt interface respectively.

In the scenario of Figure 2, if the user accesses the service provided by the visited network from the visited network, the home network operator needs to disclose its own user data to the visited network operator. In this scenario, the home network operator Don't want to completely disclose your user data to the visited network The operator, the NACF that visits the network can only obtain some user default access information, and cannot obtain the complete QoS subscription information of the user, which cannot provide services for the user and affect the user experience. Summary of the invention

In view of this, the main purpose of the present invention is to provide a cross-domain resource admission control method and system, when a user accesses a visited network from a visited network, and the home network operator does not complete its own user data. When it is disclosed to a network operator, it can provide services to users, thereby improving the user experience while protecting the interests of the home network operators.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A cross-domain resource admission control method includes:

After the user visits the network and receives the user request, the user is notified to the home network;

After receiving the notification of the user visiting the network, the user home network formulates the initial policy rule according to the user subscription information and returns to the user to visit the network;

The user visits the network to make the final admission decision based on the initial policy rules established by the user's home network.

The user request is a service request,

After receiving the user request, the user visits the network to notify the user that the home network is specifically: the user initiates a service request to the service control function SCF of the user visiting the network;

The SCF determines a quality of service QoS requirement parameter related to the service requested by the user, and then sends a resource initialization request carrying the QoS requirement parameter to the policy decision function entity of the visited network.

PD-FE (V);

After performing the authorization check on the resource initialization request, the PD-FE (V) sends a resource initialization request to the transmission resource control function entity TRC-FE (V) of the visited network, and the resource availability check is performed by the TRC-FE (V) and the resource availability is returned. Result

PD-FE (V) sends a resource initialization request to the policy decision function entity PD-FE(H) of the home network; The step of formulating the initial policy rule according to the user subscription information and returning to the user to visit the network further includes the following steps:

The PD-FE (H) queries the network attachment control function NACF (H) of the home network according to the received resource initialization request;

The PD-FE (H) performs authorization check on the received resource initialization request according to the user subscription information, and makes an initial policy decision after the authorization check is passed;

The user access network performs the final admission decision according to the initial policy rules formulated by the user home network, specifically:

PD-FE (H) sends a resource initialization response to PD-FE (V);

The PD-FE (V) makes a final admission decision based on the resource availability result and the received resource initialization response, and sends a resource initialization response to the SCF based on the final admission decision result.

Before the PD-FE (H) sends the resource initialization response to the PD-FE (V), the method further includes: confirming, and/or falsifying, the QoS requirement parameter carried in the resource initialization request according to the user subscription information, And/or supplementing, thereby generating an initial policy rule, and carrying the initial policy rule by the resource initialization response message.

The user request is a service modification request,

After the user visits the network to receive the user modification request, the user is notified that the home network is: the user initiates a service modification request to the SCF of the user visiting the network;

The SCF determines a QoS requirement parameter of the service to be modified, and then sends a resource modification request carrying the QoS requirement parameter to the PD-FE (V);

After the PD-FE (V) performs an authorization check on the resource modification request, it sends a resource modification request to the TRC-FE (V), and the TRC-FE (V) performs a resource availability check and returns a resource availability result;

PD-FE (V) sends a resource modification request to PD-FE (H);

Determining an initial policy rule according to the user subscription information and returning to the user to visit the network It also includes the steps before:

PD-FE (H) performs authorization check on the received resource modification request according to the user subscription information, and makes an initial policy decision after the authorization check is passed;

PD-FE (H) sends a resource modification response to PD-FE (V);

The PD-FE (V) makes a final admission decision based on the resource availability result and the received resource modification response, and sends a resource modification response to the SCF based on the final admission decision result.

Before the PD-FE (H) sends the resource modification response to the PD-FE (V), the method further includes: confirming, and/or modifying, the QoS requirement parameter carried in the resource modification request according to the user subscription information, thereby generating an initial The policy rule, and the resource modification response message carries the initial policy rule.

After the PD-FE (V) performs the final admission decision, the method further includes the steps of: transmitting the final admission decision result to the policy enforcement function entity PE-FE (V) of the user visited network; PE-FE (V) installation Final acceptance decision and return the installation results to PD-FE (V).

The QoS requirement parameters include: network service type, bandwidth, priority, and charging related information.

An inter-domain resource admission control system includes a user visited network and a user home network, the user visits the network, and is configured to notify the user of the home network after receiving the user request; and initial policy rules formulated according to the user home network , making final acceptance decisions;

The user home network is configured to, after receiving the notification that the user visits the network, formulate an initial policy rule according to the user subscription information and return to the user to visit the network.

The user visited network includes: a service control function SCF, a policy decision function entity PD-FE (V), and a transmission resource control function entity TRC-FE (V); the user home network includes: a policy decision function entity PD-FE ( H), network attachment control function NACF (H), where The SCF is configured to receive a service request initiated by a user, determine a QoS requirement parameter related to a service requested by the user, and then send a resource initialization request to the PD-FE (V);

The PD-FE (V) is configured to perform an authorization check on the resource initialization request, and then send a resource initialization request to the TRC-FE (V); and after receiving the resource availability result returned by the TRC-FE (V), sending a resource initialization request to the PD-FE (H); and a final admission decision based on the resource availability result and the resource initialization response sent by the PD-FE (H), and sending a resource initialization response to the SCF according to the final admission decision result;

The TRC-FE (V) is configured to perform a resource availability check on the resource initialization request, and return a resource availability result to the PD-FE (V);

The PD-FE (H) is configured to query the user subscription information according to the received resource initialization request to the NACF (H), and perform authorization check on the received resource initialization request according to the user subscription information, after the authorization check is passed. Making an initial policy decision, and then sending a resource initialization response to the PD-FE (V) according to the initial policy rule formulated;

The NACF (H) is configured to return user subscription information to the PD-FE (H) according to the PD-FE (H) query request.

The SCF is further configured to receive a service modification request initiated by the user, determine a QoS requirement parameter of the service to be modified, and then send a resource modification request to the PD-FE (V);

The PD-FE (V) is further configured to perform an authorization check on the resource modification request, and then send a resource modification request to the TRC-FE (V); and after receiving the resource availability result returned by the TRC-FE (V), Transmitting a resource modification request to the PD-FE (H); and performing a final admission decision according to the resource availability result and the resource modification response sent by the PD-FE (H), and sending a resource modification response to the SCF according to the final admission decision result;

The TRC-FE (V) is further configured to perform a resource availability check on the resource modification request, and return a resource availability result to the PD-FE (V);

The PD-FE (H) is further configured to modify the received resource according to the user subscription information. The authorization check is performed, the initial policy decision is made after the authorization check is passed, and the resource modification response is sent to the PD-FE (V) according to the initial policy rule.

The user visit network also includes the policy enforcement function entity PE-FE (V),

The PD-FE (V) is also used to send a final admission decision result to the PE-FE (V); the PE-FE (V) is used to install the final admission from the PD-FE (V) Decision results, and return the installation results to PD-FE (V).

The cross-domain resource admission control method and system of the present invention, when the home network operator does not fully disclose its own user data to the visited network operator, when the user visits the network to receive the user request, the user request is related through the Ri interface. The information informs the user of the home network, and the user home network performs authorization check according to the user subscription information and makes an initial policy decision, and then the user visits the network to make a final admission decision. Since the home network operator does not fully disclose its user data to the visited network operator, the user home network performs 4 authorization check and initial policy decision according to the user subscription information, and then the user visits the network for final acceptance. Decision making, therefore, the present invention can improve the user experience while protecting the interests of the home network operator. DRAWINGS

1 is a schematic diagram of a functional framework of a RACF in the prior art;

2 is a schematic diagram of a RACF network configuration in the prior art;

3 is a schematic flowchart of a cross-domain resource admission control method according to the present invention;

4 is a schematic structural diagram of a cross-domain resource admission control system according to the present invention;

FIG. 5 is a schematic flowchart of a resource admission control method for cross-domain according to Embodiment 1 of the present invention; FIG. 6 is a schematic flowchart of a method for resource admission control of an inter-domain according to Embodiment 2 of the present invention. detailed description

The basic idea of the invention is: The home network operator does not fully disclose its own user data. In the case of visiting the network operator, when the user visits the network to receive the user request, the user information is notified to the user home network through the Ri interface, and the user home network performs authorization check according to the user subscription information and makes an initial policy decision. The user then visits the network to make a final admission decision based on the initial policy decisions made by the user's home network.

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

FIG. 3 is a schematic flowchart of a cross-domain resource admission control method according to the present invention. As shown in FIG. 3, the cross-domain resource admission control method of the present invention generally includes the following steps:

Step 31: After the user visits the network and receives the user request, the user is notified of the home network.

Here, the user request generally refers to a service request or a service modification request, and the user specifically initiates a service request/service modification request to the service control function (SCF) of the user visiting the network.

When the user initiates the service request/service modification request, the user visits the network to send the resource initialization request/resource modification request to the user home network according to the service request/service modification request from the user, specifically: the SCF determines the service requested by the user/ needs to be modified. The QoS requirement parameter of the service, and then the resource initialization request/resource modification request is sent to the policy decision function entity PD-FE (V) of the visited network, and the PD-FE (V) performs the authorization check on the resource initialization request/resource modification request. Sending a resource initialization request/resource modification request to the transmission resource control function entity TRC-FE (V) of the visited network, performing resource availability check by TRC-FE (V) and returning the resource availability result, and then PD-FE (V) Transmitting a resource initialization request/resource modification request to the policy decision function entity PD-FE(H) of the home network through the Ri interface.

The QoS requirement parameters carried in the resource initialization request/resource modification request generally include: a network service type, a bandwidth, a priority, and a charging related information, where the network service type is a network service type requested by a CPE (Customer Premises Equipment), For example, priority users, gold users, silver users, ordinary users, etc.; bandwidth is the maximum bandwidth of the uplink and downlink connections requested by the CPE; priority is the maximum priority allowed for all resource reservation requests, indicating the importance of the resource control request Sex, the PD-FE can use this information when multiple requests exist at the same time. Processing; billing related information is a billing ID and the like.

Step 32: After receiving the notification of the user visiting the network, the user home network formulates an initial policy rule according to the user subscription information and returns to the user to visit the network.

The step is specifically: PD-FE (H) queries the network attachment control function NACF(H) of the home network according to the received resource initialization request, and then queries the received resource initialization request according to the user subscription information. Authorization check, the authorization check is made after the initial policy decision; or PD-FE (H) performs authorization check on the received resource modification request according to the user subscription information, and the initial policy decision is made after the authorization check is passed, because the initialization is performed. In the process, PD-FE (H) stores the user subscription information obtained from NACF (H), so PD-FE (H) can directly process the resource modification request by using the stored user subscription information.

Here, the PD-FE (H) authorization check of the resource initialization request/resource modification request generally includes: verifying whether the requested/modified QoS resource is consistent with the local operator policy rule and the user subscription information from NACF (H), etc. . If the authorization check is passed, the PD-FE (H) makes an initial policy decision on the service request/service modification request according to the user subscription information, the local operator policy rule, and the service information.

The initial policy decision for the service request/service modification request refers to the initial policy decision for the parameter values of the network service type, bandwidth, priority, and charging related information.

Here, the QoS requirement parameter carried in the resource initialization request/resource modification request is confirmed, and/or modified, and/or supplemented according to the user subscription information, thereby generating an initial policy rule, and the resource initialization response message/resource modification response is generated. The message carries the initial policy rule. The resource initialization response/resource modification response is specifically sent by PD-FE(H) to PD-FE(V) through the Ri interface.

It should be noted that the parameter carried in the resource initialization request/resource modification request may be further divided into a mandatory parameter and an optional parameter. Generally, if the QoS requirement parameter is optional in the resource initialization request/resource modification request, , in the resource initialization response / resource modification response is also optional; if it is mandatory in the resource initialization request / resource modification request, then in the resource initial The response/resource modification response is also mandatory.

Step 33: The user visits the network to make a final admission decision based on the initial policy rules formulated by the user's home network.

Here, the final admission decision is specifically performed by the PD-FE (V) according to the resource availability result and the received resource initialization response/resource modification response, and the resource initialization response/resource modification response is sent to the SCF according to the final admission decision result. In practical applications, after the PD-FE (V) makes the final admission decision, the final admission decision result can be sent to the user to access the network's policy enforcement function entity PE-FE (V), which is installed by the PE-FE (V). The final admission decision is made and the installation results are returned to PD-FE (V).

4 is a schematic structural diagram of a cross-domain resource admission control system according to the present invention. As shown in FIG. 4, the cross-domain resource admission control system of the present invention generally includes: a user visited network 41 and a user home network.

The user visits the network 41, and is configured to notify the user of the home network 42 after receiving the user request; and perform a final admission decision according to the initial policy rule formulated by the user home network 42; the user home network 42 is configured to receive the user After the notification of the network 41 is visited, an initial policy rule is formulated based on the user subscription information and returned to the user to visit the network 41.

Specifically, the user visited network 41 includes: a service control function SCF 411, a policy decision function entity PD-FE (V) 412, a transmission resource control function entity TRC-FE (V) 413; and the user home network 42 includes: a policy decision Functional entity PD-FE (H) 421, network attachment control function NACF (H) 422, where

The SCF 411 is configured to receive a service request initiated by the user, determine a QoS requirement parameter related to the service requested by the user, and then send a resource initialization request to the PD-FE (V) 412;

PD-FE (V) 412, configured to perform a 4 authorization check on the resource initialization request, then send a resource initialization request to the TRC-FE (V) 413; and after receiving the resource availability result returned by the TRC-FE (V) 413 , sending a resource initialization request to PD-FE (H) 421; The source availability result and the resource initialization response sent by the PD-FE (H) 421, perform a final admission decision, and send a resource initialization response to the SCF 411 according to the final admission decision result;

TRC-FE (V) 413, configured to perform resource availability check on the resource initialization request, and return a resource availability result to the PD-FE (V) 412;

The PD-FE (H) 421 is configured to query the NACF (H) 422 for the user subscription information according to the received resource initialization request, and perform an authorization check on the received resource initialization request according to the user subscription information, and after the authorization check is passed, Making an initial policy decision, and then sending a resource initialization response to the PD-FE (V) 412 according to the established initial policy rule;

NACF (H) 422, used to return user subscription information to PD-FE (H) according to the PD-FE (H) query request.

The SCF is further configured to receive a service modification request initiated by the user, determine a QoS requirement parameter of the service to be modified, and then send a resource modification request to the PD-FE (V) 412;

The PD-FE (V) 412 is further configured to perform an authorization check on the resource modification request, and then send a resource modification request to the TRC-FE (V) 413; and after receiving the resource availability result returned by the TRC-FE (V) 413 Transmitting a resource modification request to the PD-FE (H) 421; and performing a final admission decision based on the resource availability result and the resource modification response sent by the PD-FE (H) 421, and transmitting the resource modification response according to the final admission decision result Give SCF 411;

TRC-FE (V) 413, which is also used to perform resource availability check on resource modification request and return resource availability result to PD-FE (V) 412;

The PD-FE (H) 421 is further configured to perform an authorization check on the received resource modification request according to the user subscription information, perform an initial policy decision after the authorization check, and then send the resource modification according to the initial policy rule. The response is to PD-FE (V) 412.

The user visit network also includes a policy enforcement function entity PE-FE (V) 414,

PD-FE (V) 412, which will also be used to send the final admission decision result to PE-FE (V)

414; PE-FE (V) 414, for installing the final admission decision result from PD-FE (V) 412, and returning the installation result to PD-FE (V) 414.

Example 1

In this embodiment, the user initiates a service request. FIG. 5 is a schematic flowchart of a resource admission control method of the cross-domain according to the embodiment of the present invention. As shown in FIG. 5, in this embodiment, the cross-domain resource admission control method includes the following steps:

Step 501: The user initiates a service request to the SCF.

Step 502: The SCF determines a QoS requirement parameter of the service requested by the user, such as a bandwidth, a service type, and the like, and then sends a resource initialization request to the policy decision function entity PD-FE (V) of the visited network.

Here, the resource initialization request generally carries a media stream description and a QoS parameter, etc., to request a resource admission control function for QoS resource authorization and reservation.

Step 503: PD-FE (V) performs 4 authorization check on the resource initialization request.

Here, the PD-FE (V) performs a weighted check on the resource initialization request, which generally includes whether the QoS resource of the verification request is consistent with the local operator policy rule.

Step 504: The PD-FE (V) sends a resource initialization request to the transmission resource control function entity TRC-FE (V) of the visited network to perform resource availability check.

Here, the PD-FE(V) first determines the access network and the core network involved in the requested QoS resource, and then sends a resource initialization request to the TRC-FE (V) to check the resource availability of the network involved.

Step 505: The PD-FE (V) sends a resource initialization request to the policy decision function entity PD-FE (H) of the home network.

Here, since the PD-FE (V) does not have the user subscription information, the PD-FE (V) needs to further transmit the resource initialization request to the PD-FE (H).

Step 506: The PD-FE (H) sends a request to the home network according to the received resource initialization request. The network attachment control function NACF (H) queries the user subscription information.

Here, PD-FE (H) generally saves the subscription information of the query locally.

Step 507: The PD-FE (H) performs an authorization check on the received resource initialization request according to the user subscription information acquired in step 506, and performs an initial policy decision after the authorization check is passed.

Here, the PD-FE (H) authorization check of the resource initialization request generally includes: verifying whether the requested QoS resource is consistent with the local operator policy rule and the user subscription information from the NACF (H). If the authorization check is passed, the PD-FE (H) makes an initial policy decision on the service request according to the user subscription information, the local operator policy rule, and the service information.

Step 508: The PD-FE (H) sends a resource initialization response to the PD-FE (V).

Here, the resource initialization response carries the initial policy rules formulated by the PD-FE (H), including: the network service type, bandwidth, and/or modification, and/or supplemental resource request initialization by the PD-FE (H) Priority, billing related information and other parameters.

Step 509: The PD-FE (V) performs a final admission decision according to the resource availability result obtained in step 504 and the received resource initialization response.

Step 510: The PD-FE (V) sends a resource initialization request to the policy execution function entity PE-FE (V) of the visited network to install the final decision policy.

Step 511: PE-FE (V) installs the final decision policy from PD-FE (V) and sends a resource initialization response to PD-FE (V).

It should be noted that step 510 and step 511 are optional steps.

Step 512: The PD-FE (V) sends a resource initialization response to the SCF.

Here, the resource initialization response sent to the SCF carries the final admission decision result. After receiving the resource initialization response, the SCF can provide the user with the requested service according to the resource initialization response.

Example 2

In this embodiment, the user initiates a service modification request, and FIG. 6 is a cross-domain according to Embodiment 2 of the present invention. The flow of the resource admission control method is as shown in FIG. 6. In this embodiment, the cross-domain resource admission control method includes the following steps:

Step 601: The user initiates a service modification request to the SCF.

Step 602: The SCF determines a QoS requirement parameter of the service to be modified, such as a bandwidth, a service type, and the like, and then sends a resource modification request to the policy decision function entity PD-FE (V) of the visited network.

Here, the resource modification request generally carries QoS parameters and the like that need to be modified.

Step 603: The PD-FE (V) performs an authorization check on the resource modification request.

Here, the PD-FE (V) performs an authorization check on the resource modification request, which generally includes verifying whether the modified QoS resource is consistent with the local operator policy rule.

Step 604: The PD-FE (V) sends a resource modification request to the transmission resource control function entity TRC-FE (V) of the visited network to perform resource availability check.

Here, the PD-FE (V) first decides the access network and the core network involved in the QoS resource to be modified, and then sends a resource modification request to the TRC-FE (V) to check the resource availability of the network involved.

Step 605: The PD-FE (V) sends a resource modification request to the policy decision function entity PD-FE (H) of the home network.

Here, since the PD-FE (V) does not have the user subscription information, the PD-FE (V) needs to further transmit the resource modification request to the PD-FE (H).

Step 606: The PD-FE (H) performs an authorization check on the received resource modification request according to the user subscription information, and performs an initial policy decision after the authorization check is passed.

During the initialization process, the PD-FE (H) stores the user subscription information obtained from the NACF (H) locally. Therefore, the process directly processes the resource modification request by using the locally stored user subscription information, PD-FE (H). The authorization check for the resource modification request generally includes: Verifying whether the modified QoS resource is signed with the local carrier policy rule and the user from NACF (H) The information is consistent and so on. If the authorization check is passed, the PD-FE (H) makes an initial policy decision on the resource modification request according to the user subscription information, the local operator policy rule, the service information, and the like.

Step 607: The PD-FE (H) sends a resource modification response to the PD-FE (V).

Here, the resource modification response carries the initial policy rule formulated by the PD-FE (H), including: the network service type, bandwidth, priority, and charging for the resource modification request acknowledgement, and/or modification by the PD-FE (H) Related information and other parameters.

Step 608: The PD-FE (V) performs a final admission decision according to the resource availability result obtained in step 604 and the received resource modification response.

Step 609: The PD-FE (V) sends a resource modification message to the policy execution function entity PE-FE (V) of the visited network to install the final decision policy.

Step 610: PE-FE (V) installs the final decision policy from the PD-FE (V) and sends a resource modification response to the PD-FE (V).

It should be noted that step 609 and step 610 are optional steps.

Step 611: The PD-FE (V) sends a resource modification response to the SCF.

Here, the resource modification response sent to the SCF carries the final admission decision result.

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 cross-domain resource admission control method, the method comprising: the user visiting the network, after receiving the user request, notifying the user of the home network;

2. The method according to claim 1, wherein the user request is a service request;

PD-FE (V);

PD-FE (V) sends a resource initialization request to the policy decision function entity PD-FE (H) of the home network;

The step of formulating the initial policy rule according to the user subscription information and returning to the user to visit the network further includes the following steps:

PD-FE (H) performs authorization check on the received resource initialization request according to the user subscription information, and makes an initial policy decision after the authorization check is passed; The user access network performs the final admission decision according to the initial policy rules formulated by the user home network:

PD-FE (H) sends a resource initialization response to PD-FE (V);

The method according to claim 2, wherein before the PD-FE (H) sends a resource initialization response to the PD-FE (V), the method further comprises the step of: initializing the resource according to the user subscription information The QoS requirement parameters carried in the acknowledgment, and/or modification, and/or supplementation, generate an initial policy rule, and carry the initial policy rule by the resource initialization response message.

The method according to claim 1, wherein the user requests a service modification request;

After performing the authorization check on the resource modification request, the PD-FE (V) sends a resource modification request to the TRC-FE (V), performs resource availability check by the TRC-FE (V), and returns a resource availability result;

PD-FE (V) sends a resource modification request to PD-FE (H);

The step of formulating an initial policy rule according to the user subscription information and returning to the user to visit the network further includes the following steps:

The user visited network performs the most based on the initial policy rules formulated by the user's home network. The final acceptance decision is specifically:

PD-FE (H) sends a resource modification response to PD-FE (V);

The method according to claim 4, wherein before the PD-FE (H) sends a resource modification response to the PD-FE (V), the method further comprises the step of: requesting a resource modification according to the user subscription information The QoS requirement parameters carried in the acknowledgment, and/or modification, generate an initial policy rule, and the resource modification response message carries the initial policy rule.

The method according to claim 2 or 4, wherein after the PD-FE (V) makes a final admission decision, the method further comprises the step of: transmitting the final admission decision result to the user visiting the network. The policy enforcement function entity PE-FE (V); PE-FE (V) installs the final admission decision and returns the installation result to the PD-FE (V).

The method according to claim 2 or 4, wherein the QoS requirement parameter comprises: a network service type, a bandwidth, a priority, and charging related information.

8. An inter-domain resource admission control system, characterized in that the system comprises a user visited network and a user home network,

The user visits the network, and after receiving the user request, notifies the user of the home network; and performs a final admission decision according to an initial policy rule formulated by the user home network;

The system according to claim 8, wherein the user visited network comprises: a service control function SCF, a policy decision function entity PD-FE (V), and a transmission resource control function entity TRC-FE (V); The user home network includes: a policy decision function entity PD-FE (H), and a network attach control function NACF (H), where

The SCF is configured to receive a service request initiated by a user, and determine that the service requested by the user is The QoS requirement parameter is then sent a resource initialization request to the PD-FE (V); the PD-FE (V) is used to perform an authorization check on the resource initialization request, and then sends a resource initialization request to the TRC-FE (V) And after receiving the resource availability result returned by TRC-FE (V), send a resource initialization request to PD-FE (H); and finally perform a resource initialization response based on the resource availability result and PD-FE (H) Acceptance decision, and send a resource initialization response to the SCF according to the final admission decision result;

10. The system of claim 9 wherein:

The PD-FE (H) is further configured to modify the received resource according to the user subscription information. Perform authorization check, make initial policy decision after authorization check, and send resource modification response to PD-FE (V) according to the initial policy rule.

11. The system according to claim 10, wherein the user visited network further comprises a policy enforcement function entity PE-FE (V),

The PD-FE (V) is also used to send the final admission decision result to the PE-FE (V); the PE-FE (V) is used to install the final admission from the PD-FE (V) Decision results, and return the installation results to PD-FE (V).