CN103297964B - Resource acceptance control method, BNG and PDP - Google Patents

Abstract

The present invention provides a kind of resource acceptance control method, BNG and PDP, wherein resource acceptance control method includes：Physical link where network element obtains the user equipment after user equipment certification success allows the fixed network resource information that mobile subscriber equipment uses；The network element is gateway control apparatus (BNG) or fixed network strategic server (PDP)；After the network element receives the request of the mobile subscriber equipment from the physical link, whether the fixed network resource for allowing mobile subscriber equipment to use according to physical link where mobile subscriber equipment described in the fixed network resource information decision meets the request, if satisfied, then receiving the request.Above-mentioned resource acceptance control method, BNG and PDP, whether the fixed network resource information decision used according to the permission mobile subscriber of acquisition accesses the request of mobile subscriber equipment, it preferably solves the problems, such as that mobile subscriber excessively consumes the bandwidth resources of fixed network, improves the business experience of fixed network user itself.

Description

Resource admission control method, BNG and PDP

technical field

The invention relates to the communication field, in particular to a resource admission control method, a gateway control device (BNG) and a fixed network policy server (PDP).

Background technique

With the development of network technology and the needs of users for services, the terminal devices in the home network are gradually diversified and more intelligent. The Residential Gateway (RG), as a centralized intelligent interface, connects the home network with the external network, and provides connection, overall control and coordination for the home network.

Currently, the Broadband Forum (BBF), an international standards organization, is working on the standardization of Fixed Mobile Convergence (FMC). The scenarios involved include 3GPP user equipment (UE) through RG access network.

In the prior art, the RG, as an 802.1x client, initiates access authentication to the AN (Access Node, access node). Accounting, authentication, authorization and accounting server) initiates an authentication request. If the RG passes the authentication and works in routing mode, the device terminals in the home network can access the network through the RG without authentication. If the RG selects bridge mode access for the UE, the UE needs to be authenticated to access the network. For a 3GPP UE trying to access the network from the RG, in order to facilitate policy control and traffic statistics on its service data flow, the BBF network hopes to be able to perceive the existence of the 3GPP UE, that is, the 3GPP UE supports explicit access authentication on the BBF network. sign.

However, at present, mobile users consume too much bandwidth resources of the fixed network, which affects the service experience of the fixed network users themselves.

Contents of the invention

The embodiment of the present invention provides a resource admission control method, BNG and PDP to solve the problem of excessive consumption of fixed network bandwidth resources by mobile users.

An embodiment of the present invention provides a resource admission control method, the method comprising:

After the user equipment is successfully authenticated, the network element obtains the fixed network resource information that the physical link of the user equipment allows the mobile user equipment to use; the network element is a gateway control device (BNG) or a fixed network policy server (PDP);

After receiving the request from the mobile user equipment on the physical link, the network element decides whether the fixed network resources that the mobile user equipment is allowed to use on the physical link where the mobile user equipment is located meet the requirements of the fixed network resource information. request, and if satisfied, accept the request.

Preferably, the fixed network resource information includes one or more of committed rate, peak rate, time period and service type.

Preferably, when the network element is a BNG, after the user equipment is successfully authenticated, the network element obtains the fixed network resource information that the physical link of the user equipment is allowed to use by the mobile user equipment includes:

The BNG receives the fixed network resource information that the physical link of the fixed network user equipment allows the mobile user equipment to use, which is sent by the fixed network authentication, authorization and accounting server (AAA) after the fixed network user equipment passes the fixed network authentication;

The BNG receives the fixed network resource information that the mobile user equipment is allowed to use on the physical link of the mobile user equipment sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication; or

The BNG queries the fixed network AAA to obtain fixed network resource information that the fixed network user equipment or the link where the mobile user equipment is on allows the mobile user equipment to use.

Preferably, when the network element is a PDP, after the user equipment is successfully authenticated, the network element obtains the fixed network resource information that the physical link of the user equipment is allowed to use by the mobile user equipment includes:

The PDP receives the fixed network resource information that the physical link of the fixed network user equipment allows the mobile user equipment to use, which is sent by the fixed network authentication, authorization and accounting server (AAA) after the fixed network user equipment passes the fixed network authentication;

The PDP receives the fixed network resource information that the mobile user equipment is allowed to use on the physical link where the mobile user equipment is located and sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication; or,

The PDP queries the fixed network AAA to obtain the fixed network resource information that the fixed network user equipment or the link where the mobile user equipment is on allows the mobile user equipment to use.

Preferably, the link where the fixed network user equipment or the mobile user equipment is located allows the fixed network resource information used by the mobile user equipment to be subscribed in the fixed network AAA.

The embodiment of the present invention also provides a gateway control device (BNG), and the BNG includes:

An acquisition module, configured to acquire fixed network resource information that the physical link where the user equipment is located on allows the mobile user equipment to use after the user equipment is successfully authenticated;

The admission control module is configured to, after receiving the request from the mobile user equipment on the physical link, determine whether the fixed network resources allowed to be used by the mobile user equipment on the physical link where the mobile user equipment is located are satisfied according to the fixed network resource information. The request, if satisfied, is accepted.

Preferably, the fixed network resource information includes one or more of committed rate, peak rate, time period and service type.

Preferably, the acquisition module is specifically used for:

Receiving the fixed network resource information that the physical link of the fixed network user equipment allows the mobile user equipment to use sent by the fixed network authentication, authorization and accounting server (AAA) after the fixed network user equipment passes the fixed network authentication;

receiving the fixed network resource information that the mobile user equipment is allowed to use on the physical link where the mobile user equipment is located sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication; or

Querying the fixed network AAA to obtain fixed network resource information that the fixed network user equipment or the link where the mobile user equipment is on allows the mobile user equipment to use.

The embodiment of the present invention provides a kind of fixed network policy server (PDP) in addition, and this PDP comprises:

An acquisition module, configured to acquire fixed network resource information that the physical link where the user equipment is located on allows the mobile user equipment to use after the user equipment is successfully authenticated;

The admission control module is configured to, after receiving the request from the mobile user equipment on the physical link, determine whether the fixed network resources allowed to be used by the mobile user equipment on the physical link where the mobile user equipment is located are satisfied according to the fixed network resource information. The request, if satisfied, is accepted.

Preferably, the fixed network resource information includes one or more of committed rate, peak rate, time period and service type.

Preferably, the acquisition module is specifically used for:

Receiving the fixed network resource information that the physical link of the fixed network user equipment allows the mobile user equipment to use sent by the fixed network authentication, authorization and accounting server (AAA) after the fixed network user equipment passes the fixed network authentication;

receiving the fixed network resource information that the mobile user equipment is allowed to use on the physical link where the mobile user equipment is located sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication; or

Querying the fixed network AAA to obtain fixed network resource information that the fixed network user equipment or the link where the mobile user equipment is on allows the mobile user equipment to use.

The above-mentioned resource admission control method, BNG and PDP, according to the obtained fixed network resource information that mobile users are allowed to use, decides whether to access the request of mobile user equipment, and better solves the problem that mobile users consume too much bandwidth resources of fixed network. Improve the service experience of fixed network users.

Description of drawings

Figure 1 is a schematic diagram of an access authentication scenario of an existing RG;

FIG. 2 is a signaling flowchart of Embodiment 1 of RG access authentication in the present invention;

FIG. 3 is a schematic diagram of an access authentication scenario of an existing 3GPP UE;

FIG. 4 is a signaling flowchart of an embodiment of 3GPP UE access authentication in the present invention;

FIG. 5 is a signaling flowchart of Implementation 1 of the resource admission control method of the present invention;

FIG. 6 is a signaling flowchart of Embodiment 2 of RG access authentication in the present invention;

FIG. 7 is a signaling flowchart of Implementation 2 of the resource admission control method of the present invention;

Fig. 8 is a schematic structural diagram of a BNG embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a PDP embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

An embodiment of the present invention provides a resource admission control method, the method comprising:

Step 1. After the user equipment is successfully authenticated, the network element obtains the fixed network resource information that the physical link of the user equipment allows the mobile user equipment to use; the network element is a gateway control device (BNG) or a fixed network policy server (PDP) ;

Wherein, the fixed network resource information includes one or more of committed rate, peak rate, time period and service type.

After the user authentication is successful, the network element obtains the fixed network resource information that the user's physical link allows the mobile user to use. The fixed network resource information that the physical link of the fixed network user equipment allows the mobile user equipment to use; receives the fixed network AAA sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication. The fixed network resource information used by the user equipment; or, querying the fixed network AAA to obtain the fixed network resource information that the fixed network user equipment or the mobile user equipment is allowed to use by the link where the mobile user equipment is located.

Step 2. After the network element receives the request from the mobile user equipment on the physical link, it decides whether the physical link where the mobile user equipment is located allows the mobile user equipment to use the fixed network resources according to the fixed network resource information. The request is satisfied, and if so, the request is admitted.

As shown in Figure 1, it is a schematic diagram of an existing RG access authentication scenario. In this scenario, the RG is an 802.1x client, the access node (Access Node, AN) is an 802.1x authenticator and a RADIUS client, and the AAA is Authentication server. The access authentication process of RG is as follows: RG initiates access authentication to AN (that is, sends an authentication protocol start (EAPoL Start) message), and AN, as an 802.1x authenticator and RADIUS client, initiates an authentication request to AAA (that is, sends an authentication access request (RADIUSAccessRequest) message).

As shown in Figure 2, it is the signaling flow chart of the first embodiment of the RG access authentication of the present invention. The RG performs access authentication in the fixed network, and after the authentication is successful, the AAA sends the link information of the RG to the gateway control device. (BNG). The process includes the following steps:

Step 201, RG sends an EAPoL-Start message to AN to start 802.1x authentication access;

Step 202, AN sends EAP identification request (EAP-Identity-Request) message to RG, requires RG to report username;

Step 203, RG replies EAP identity response (EAP-Identity-Response) to AN, including user name;

Step 204, AN encapsulates the EAP frame into a RADIUS access request (RADIUS-Access-Request) message, and sends it to the BNG;

Step 205, further, BNG, as a RADIUS proxy (Proxy), sends the RADIUS-Access-Request to the BBF AAA;

Step 206, BBF AAA replies with RADIUS access response (RADIUS-Access-Response), which includes EAP challenge (Challenge);

Step 207, BNG transfers the RADIUS-Access-Response to AN;

Step 208, AN decapsulates the EAP frame and sends it to RG; RG replies, and the reply message includes ChallengedPassword;

Step 209, the AN encapsulates the received EAP frame into a RADIUS-Access-Request message, which contains the Challenged Password;

Step 210, BNG forwards RADIUS-Access-Request to BBF AAA;

Step 211, if the authentication is successful, the BBF AAA replies with RADIUS-Access-Accept; and the reply message carries the resource parameters that the link where the RG is located to allow mobile network users to use;

The RG is a type of fixed network user equipment;

Specifically, the resource parameters allowed to be used by mobile network users include: a committed rate, and/or a peak rate, and/or a time period, and/or a service type.

Step 212, BNG forwards RADIUS-Access-Accept after saving the resource parameters;

In step 213, the AN decapsulates the EAP frame and sends the EAP-Success to the RG.

As shown in Figure 3, it is a schematic diagram of the access authentication scenario of the existing 3GPP UE. In this scenario, the 3GPP UE is the 802.1x client, the RG is the 802.1x authenticator and the RADIUS client, and the BBF AAA is the authentication server. The access authentication process of 3GPP UE is as follows: 3GPP UE initiates access authentication to RG (that is, sends an authentication protocol start (EAPoL Start) message), and RG, as the 802.1x authenticator and RADIUS client, initiates an authentication request to AAA (that is, sends an authentication Incoming request (RADIUSAccessRequest) message).

As shown in Figure 4, it is the signaling flow chart of the 3GPP UE access authentication embodiment of the present invention. The 3GPP UE performs access authentication in the fixed network, and after the authentication is successful, the AAA sends the link information of the 3GPP UE to the BNG . The process includes the following steps:

Step 401, 3GPP UE sends an EAPoL-Start message to RG to start 802.1x authentication access;

Step 402, the RG sends an EAP-Identity-Request message to the UE, requesting the UE to report the user name;

Step 403, UE replies EAP-Identity-Response to RG, including username;

Step 404, the RG encapsulates the EAP frame into a RADIUS-Access-Request message and sends it to the BNG;

Step 405, BNG sends RADIUS-Access-Request message to BBF AAA;

Step 406. Further, the BBF AAA sends the RADIUS-Access-Request to the home (Home) AAA according to the Network Access Identifier (NAI);

Step 407, Home AAA replies with RADIUS-Access-Response, which includes EAPChallenge;

Step 408, BBF AAA forwards the RADIUS-Access-Response to BNG;

Step 409, BNG forwards the RADIUS-Access-Response to RG;

Step 410, the RG decapsulates the EAP frame and sends it to the UE; the UE replies, and the reply message includes ChallengedPassword;

Step 411, the RG encapsulates the received EAP frame into a RADIUS-Access-Request message, which contains the Challenged Password;

Step 412, BNG forwards RADIUS-Access-Request to BBF AAA;

Step 413, BBF AAA forwards the RADIUS-Access-Request to Home AAA;

Step 414, if the authentication is successful, Home AAA replies with RADIUS-Access-Accept;

Step 415, the BBF AAA forwards the RADIUS-Access-Accept to the BNG; and adds the resource parameters that the link where the 3GPP UE is on allows the mobile network user to use in the message;

Specifically, the resource parameters allowed to be used by mobile network users include: a committed rate, and/or a peak rate, and/or a time period, and/or a service type.

Step 416, BNG forwards RADIUS-Access-Accept to RG;

Step 417, the RG decapsulates the EAP frame, and sends the EAP-Success to the UE.

As shown in Figure 5, it is a signaling flow chart of the first implementation of the resource admission control method of the present invention. After receiving the service request from the service function (Application Function, AF), the fixed network policy server (PDP) sends a resource request to the BNG, BNG judges whether to accept the request. The process includes the following steps:

Step 501, the PDP receives the mobile user service request from the AF, and after making an initial admission decision (such as judging whether the user subscription information QoS, etc. is legal), sends a resource request to the BNG to request corresponding resources;

Step 502. Optionally, after the BNG receives the resource request message, if the resource request comes from a mobile user, and there is no local policy rule for mobile users to use fixed network resources, then query BBFAAA to obtain information about allowing mobile users to use fixed network resources , BBF AAA replied relevant information;

The fixed network resource information that the mobile user is allowed to use on the link where the fixed network user or mobile user is located is signed in the BBF AAA.

Step 503, the BNG performs admission control on the resource request;

Specifically, the BNG judges whether the resource parameters allowed by the mobile network user on the link where the mobile user is located meets the resource request of the current mobile user, and if so, and the current resource is available, accepts the resource request and executes relevant policy rules.

Step 504, BNG replies a response message to the PDP, and if not satisfied, then replies a rejection message to the PDP, which carries the reason for the rejection, such as the current resource request exceeds the resource parameters allowed by the mobile network user on the link where the mobile user is located.

As shown in FIG. 6 , it is a signaling flow chart of Embodiment 2 of RG access authentication in the present invention. The RG performs access authentication in the fixed network, and AAA pushes the link information of the RG to the PDP after the authentication is successful. The process includes the following steps:

Step 601, the RG sends an authentication request message to the BNG;

Step 602. Further, after receiving the authentication request, BNG goes to BBF AAA to check the user's legitimacy;

Step 603, if the user is legal, the AAA pushes the resource parameters that the mobile network user is allowed to use by the link where the RG is located to the PDP;

Specifically, the resource parameters allowed to be used by mobile network users include: a committed rate, and/or a peak rate, and/or a time period, and/or a service type.

The PDP holds related information.

Step 604, AAA sends an authentication response message to BNG;

Step 605, the BNG sends an authentication response message to the RG.

As shown in FIG. 7 , it is a signaling flowchart of the second implementation of the resource admission control method of the present invention. After receiving the service request from the AF, the PDP makes an admission decision and judges whether to accept the request. The process includes the following steps:

Step 701, PDP receives a mobile user service request trigger from AF;

Step 702. Optionally, after the PDP receives the service request message, if the service request is from a mobile user, and there is no local policy rule for mobile users to use fixed network resources, query the BBF AAA to obtain information about allowing mobile users to use fixed network resources , BBF AAA replied relevant information;

The fixed network resource information that the mobile user is allowed to use on the link where the fixed network user or mobile user is located is signed in the BBF AAA.

Step 703, the PDP performs admission control on the service request;

Specifically, the PDP judges whether the resource parameters allowed by the mobile user on the link that the mobile user is on meet the resource request of the current mobile user. If so, and the current resource is available, the service request is accepted and relevant policy rules are executed.

Step 704: After the PDP formulates relevant policy rules, it issues them to the BNG for execution.

The resource admission control method described above, according to the obtained fixed network resource information that mobile users are allowed to use, decides whether to access the request of mobile user equipment, which better solves the problem of excessive consumption of fixed network bandwidth resources by mobile users, and improves the fixed network capacity. User's own business experience.

The embodiment of the present invention also provides a gateway control device (BNG). As shown in FIG. 8, the BNG includes an acquisition module 81 and an admission control module 82, wherein:

An acquisition module, configured to acquire fixed network resource information that the physical link where the user equipment is located on allows the mobile user equipment to use after the user equipment is successfully authenticated;

The admission control module is configured to, after receiving the request from the mobile user equipment on the physical link, determine whether the fixed network resources allowed to be used by the mobile user equipment on the physical link where the mobile user equipment is located are satisfied according to the fixed network resource information. The request, if satisfied, is accepted.

Wherein, the fixed network resource information includes one or more of committed rate, peak rate, time period and service type.

Further, the obtaining module is specifically configured to: receive the fixed network authentication, authorization and accounting server (AAA) sent by the fixed network user equipment after the fixed network user equipment passes the fixed network authentication. The physical link where the fixed network user equipment is located allows the mobile user equipment to use fixed network resource information; receive the fixed network resource information that the mobile user equipment is allowed to use by the physical link of the mobile user equipment sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication; or query the fixed network The AAA obtains the fixed network resource information that the mobile user equipment is allowed to use on the link where the fixed network user equipment or the mobile user equipment is located.

The above-mentioned BNG better solves the problem that mobile users consume too much bandwidth resources of the fixed network, and improves the service experience of the fixed network users themselves.

The embodiment of the present invention also provides a PDP. As shown in FIG. 9, the PDP includes an acquisition module 91 and an admission control module 92, wherein:

An acquisition module, configured to acquire fixed network resource information that the physical link where the user equipment is located on allows the mobile user equipment to use after the user equipment is successfully authenticated;

The admission control module is configured to, after receiving the request from the mobile user equipment on the physical link, determine whether the fixed network resources allowed to be used by the mobile user equipment on the physical link where the mobile user equipment is located are satisfied according to the fixed network resource information. The request, if satisfied, is accepted.

Wherein, the fixed network resource information includes one or more of committed rate, peak rate, time period and service type.

Further, the obtaining module is specifically configured to: receive the fixed network authentication, authorization and accounting server (AAA) sent by the fixed network user equipment after the fixed network user equipment passes the fixed network authentication. The physical link where the fixed network user equipment is located allows the mobile user equipment to use fixed network resource information; receive the fixed network resource information that the mobile user equipment is allowed to use by the physical link of the mobile user equipment sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication; or query the fixed network The AAA obtains the fixed network resource information that the mobile user equipment is allowed to use on the link where the fixed network user equipment or the mobile user equipment is located.

The above-mentioned PDP better solves the problem that mobile users consume too much bandwidth resources of the fixed network, and improves the service experience of the fixed network users themselves.

Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing related hardware through a program, and the above program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk or an optical disk, and the like. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules. The present invention is not limited to any specific combination of hardware and software.

The above embodiments are only used to illustrate the technical solutions of the present invention rather than limit them, and the present invention is described in detail with reference to preferred embodiments. Those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all should be covered by the claims of the present invention.

Claims (7)

1. A resource admission control method, characterized in that the method comprises: After the user equipment is successfully authenticated, the network element obtains the fixed network resource information that the physical link of the user equipment allows the mobile user equipment to use; the network element is a gateway control device BNG or a fixed network policy server PDP; When the network element is a BNG, after the user equipment is authenticated successfully, the network element obtains the fixed network resource information that the physical link of the user equipment is allowed to use by the mobile user equipment includes: the BNG receives fixed network authentication authorization charging After the fixed network user equipment passes the fixed network authentication, the server AAA sends the fixed network resource information that the physical link of the fixed network user equipment allows the mobile user equipment to use; The fixed network resource information that the mobile user equipment is allowed to use by the physical link of the mobile user equipment sent after the network authentication; or the BNG queries the fixed network AAA to obtain the fixed network user equipment or the link of the mobile user equipment. Information about the fixed network resources that the mobile user equipment is allowed to use; When the network element is a PDP, after the user equipment is successfully authenticated, the network element obtains the fixed network resource information that the physical link of the user equipment is allowed to use by the mobile user equipment includes: the PDP receives fixed network authentication authorization charging After the fixed network user equipment passes the fixed network authentication, the server AAA sends the fixed network resource information that the physical link of the fixed network user equipment allows the mobile user equipment to use; The fixed network resource information that the mobile user equipment is allowed to use by the physical link where the mobile user equipment is sent after network authentication; or, the PDP queries the fixed network AAA to obtain the fixed network user equipment or the mobile user equipment. The fixed network resource information that the link allows the mobile user equipment to use; After the network element receives the request from the mobile user equipment on the physical link, it determines whether the fixed network resources that the mobile user equipment is allowed to use on the physical link where the mobile user equipment is located meet the requirements according to the fixed network resource information. request, and if satisfied, accept the request. 2. The method according to claim 1, characterized in that: The fixed network resource information includes one or more of committed rate, peak rate, time period and service type. 3. The method according to claim 1, characterized in that: The fixed network resource information that the fixed network user equipment or the mobile user equipment is located on allows the mobile user equipment to subscribe to the fixed network AAA. 4. A gateway control device BNG, characterized in that the BNG comprises: The obtaining module is used to obtain the fixed network resource information that the physical link of the user equipment allows the mobile user equipment to use after the user equipment is authenticated successfully; specifically, it is used to: receive the fixed network authentication, authorization and accounting server AAA in the fixed network user equipment. The fixed network resource information that the physical link of the fixed network user equipment is allowed to use by the mobile user equipment is sent after the fixed network authentication; and the fixed network resource information sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication is received. The physical link allows the mobile user equipment to use fixed network resource information; or query the fixed network AAA to obtain the fixed network user equipment or the fixed network resource information that the mobile user equipment is allowed to use by the link where the mobile user equipment is located; The admission control module is configured to, after receiving the request from the mobile user equipment on the physical link, determine whether the fixed network resources allowed to be used by the mobile user equipment on the physical link where the mobile user equipment is located are satisfied according to the fixed network resource information. The request, if satisfied, is accepted. 5. The BNG according to claim 4, characterized in that: The fixed network resource information includes one or more of committed rate, peak rate, time period and service type. 6. A kind of fixed network policy server PDP, it is characterized in that, this PDP comprises: The obtaining module is used to obtain the fixed network resource information that the physical link of the user equipment allows the mobile user equipment to use after the user equipment is authenticated successfully; specifically, it is used to: receive the fixed network authentication, authorization and accounting server AAA in the fixed network user equipment. The fixed network resource information that the physical link of the fixed network user equipment is allowed to use by the mobile user equipment is sent after the fixed network authentication; and the fixed network resource information sent by the fixed network AAA after the mobile user equipment passes the fixed network authentication is received. The physical link allows the mobile user equipment to use fixed network resource information; or query the fixed network AAA to obtain the fixed network user equipment or the fixed network resource information that the mobile user equipment is allowed to use by the link where the mobile user equipment is located; The admission control module is configured to, after receiving the request from the mobile user equipment on the physical link, determine whether the fixed network resources allowed to be used by the mobile user equipment on the physical link where the mobile user equipment is located are satisfied according to the fixed network resource information. The request, if satisfied, is accepted. 7. The PDP according to claim 6, characterized in that: The fixed network resource information includes one or more of committed rate, peak rate, time period and service type.