WO2011044811A1

WO2011044811A1 - System and mehtod for access control

Info

Publication number: WO2011044811A1
Application number: PCT/CN2010/076999
Authority: WO
Inventors: 尤建洁
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-10-15
Filing date: 2010-09-16
Publication date: 2011-04-21
Also published as: CN102045785A

Abstract

A method for access control is disclosed. The method comprises the following steps: parameters of quality of service (QoS) are subscribed based on periods of time in user subscription information, and the parameters of QoS based on periods of time are stored in a network attachment module; a resource access control module obtains the parameters of QoS based on the periods of time by an interaction with the network attachment module; and the resource access control module establishes an access policy according to the parameters of QoS based on the periods of time, and performs a resource access control according to the access policy. A system for access control is also disclosed. The system comprises a network attachment module and a resource access control module. This solution uses different policy controls of QoS at different periods of time to solve a problem that a QoS policy control based on the periods of time can not be supported in prior art when Resource and Admission Control Functions (RACF) of International Telecommunication Union-Telecommunications standardization sector (ITU-T) and Resource and Admission Control Subsystem (RACS) of Telecommunication and Internet converged Services and Protocols for Advanced Networking (TISPAN) perform the resource access control.

Description

Admission control system and method

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to an admission control system and method.

Background technique

At present, the Next Generation Network (NGN) is a hot research topic in the field of communication standards. NGN uses IP packet technology as the bearer network technology and combines fixed and mobile communications, so that NGN can provide richer multimedia services, such as emerging services with real-time requirements (IP TV, video conferencing, multimedia distance learning and video on demand). Wait). These services require communication networks to provide efficient end-to-end Quality of Service (QoS) support; and because users have higher requirements for network service quality. Therefore, providing end-to-end QoS is one of the core issues of NGN. The International Telecommunication Union-Telecommunications Standardization Sector (ITU-T) is the telecommunications division of the International Telecommunication Union (ITU), which sets standards for resource admission control. In the latest ITU-T draft of the Resource and Admission Control Functions (RACF), the functional framework of RACF is provided, as shown in Figure 1. The RACF consists of two parts: Policy Decision Functional Entity (PD-FE for short) and Transport Resource Control Functional Entity (TRC-FE for short). The TRC-FE interacts with the transmission function through the Rc interface, and interacts with the Transport Resource Enforcement Functional Entity (TRE-FE) through the Rn interface. The PD-FE interacts with the TRC-FE through the Rt interface, interacts with the Customer Premises Network (CPN) through the Rh interface, and passes the Rw interface and the Policy Enforcement Functional Entity (PE-). FE) interaction, interacting with the service layer's Service Control Functions (SCF) through the Rs interface, and connecting to the network through the Ru interface and network attachment control (Network Attachment Control) Functions, referred to as NACF, interact, 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 transport 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 consists of the Policy Enforcement Functional Entity (PE-FE) and the Transport Resource Enforcement Functional Entity (TRE-FE). The PE-FE performs the PD-FE delivery policy (referred to as CPN) and the access network, between the access network and the core network, or between different carrier networks, and supports dynamic QoS control, port address translation control, and Network Address Translator (NAT) is the key node that traverses. The TRE-FE implements the transmission resource policy rules delivered by the TRC-FE. The scope and function of the TRE-FE and the Rn interface need to be further studied, and are not studied in the R2 phase. Telecommunication and Internet converged Services and Protocols for Advanced Networking (TISPAN) proposed the Resource and Admission Control Subsystem (RACS) to solve NGN. Carrier network QoS issues. TISPAN divides the NGN architecture into a service layer and a transport layer, and introduces RACS and Network Attachment Subsystem (NASS) in the transport control layer. RACS solves the QoS problem of the NGN bearer network, while NASS is responsible for providing independent user access management for the upper layer. The main functions of the TISPAN RACS are similar to those of the ITU-T RACF.

The functional architecture of TISPAN RACS is shown in Figure 2. The RACS associates the resource requirements of the service layer with the resource allocation of the transport layer, mainly completing policy control, resource reservation, admission control, and NAT. Crossing and other functions. The RACS provides the transport layer control service for the service layer through a QoS policy, so that the user equipment (User Equipment, UE for short) can obtain the required service quality assurance.

The RACS consists of two entities: a Service-based Policy Decision Function (SPDF) and an Access-Resource and Admission Control Function (A-RACF).

SPDF provides a unified interface to the application layer, shielding the underlying network topology and specific access types, and providing service-based policy control. SPDF selects a local policy according to the request of Application Function (AF), and maps the request to IP QoS parameters, and sends it to A-RACF and Border Gateway Function (BGF) to control the corresponding Resources.

The A-RACF is located in the access network and has the function of admission control and network policy aggregation. The request is received from the SPDF, and then the admission control is implemented based on the saved policy, accepting or rejecting the request for the transmission resource. The A-RACF obtains the network attachment information and the user subscription information from the NASS through the e4 interface, so that the available network resources can be determined according to the network location information (for example, the address of the physical node of the access user), and the user is contracted when processing the resource allocation request. information. The transport layer contains three functional entities: BGF, Resource Control Enforcement Function (RCEF) and Basic Transport Function (BTF).

The BGF is a packet-to-packet gateway that can be located between the access network and the core network (for core border gateway functions) or between the two core networks (for interconnect border gateway functions). The BGF performs NAT traversal, gating, QoS marking, bandwidth throttling, usage measurement, and resource synchronization under the control of SPDF.

The RCEF implements the Layer 2/Layer 3 (L2/L3) media stream policy defined by the access operator through the Re-interface to complete the functions of gating, QoS marking, and bandwidth limitation. In the process of implementing the present invention, the inventors have found that the current technical solution has at least the following drawbacks:

ITU-T's RACF and TISPAN's RACS cannot support time-based QoS policy control when performing resource admission control. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide an admission, in view of the fact that the RACS of ITU-T and the RACS of TISPAN cannot support time-based QoS policy control when performing resource admission control. The control system and method solve the technical problem that the time-based QoS policy control cannot be supported when the resource admission control of the prior art is solved. In order to solve the above technical problem, the present invention provides an admission control method, including: signing a time-based quality of service (QoS) parameter in a user subscription information, and saving the time-based QoS parameter in a network attachment module And the resource admission control module obtains the time-based QoS parameter by interacting with the network attachment module; and the resource admission control module formulates an admission policy according to the time-based QoS parameter, and according to the admission The strategy conducts resource admission control. In the step of the resource admission control module formulating the admission policy, the effective running period and/or the expiration time point corresponding to the admission policy are recorded. The QoS parameters include bandwidth and/or priority. In the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard, the network attachment module is a network attach control function (NACF), the resource admission control module is a resource admission control function (RACF), and the admission policy is Policy rules; in the Communication and Internet Convergence Service and Protocol (TISPAN) standard for advanced networks, the network attachment module is a Network Attachment Subsystem (NASS), and the resource admission control module is a resource admission control subsystem ( RACS), and the admission policy is a transmission strategy. The step of obtaining, by the resource admission control module, the QoS parameter by interacting with the network attachment module includes: in the ITU-T standard, the NACF pushes the QoS parameter to the RACF, or the RACF Requesting the QoS parameter from the NACF; or In the TISPAN standard, the NASS pushes the QoS parameters to the RACS, or the RACS requests the QoS parameters from the NASS.

In order to solve the above technical problem, the present invention further provides an admission control system, which includes a network attachment module and a resource admission control module, where: the network attachment module is configured to: save time-based based on user subscription information a quality of service (QoS) parameter; the resource admission control module is configured to: obtain the time-based QoS parameter by interacting with the network attachment module, formulate an admission policy according to the time-based QoS parameter, and The admission policy performs resource admission control. The resource admission control module includes an admission control unit, and when the resource admission control module formulates the admission policy, the admission control unit is configured to: record an effective operation period and/or an expiration time point corresponding to the admission policy.

In the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard, the admission control unit is a Policy Decision Function Entity (PD-FE); in the Service and Protocol (TISPAN) standard for communication and Internet convergence for advanced networks. The admission control unit is an access resource admission control function (A-RACF). In the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard, the network attachment module is a network attachment control function (NACF), the resource admission control module is a resource admission control function (RACF); and is used in an advanced network. In the Communication and Internet Converged Service and Protocol (TISPAN) standard, the network attachment module is a Network Attachment Subsystem (NASS), and the resource admission control module is a Resource Admission Control Subsystem (RACS). In the ITU-T standard, the NACF is configured to obtain the time period based QoS parameter by interaction with the network attachment module as follows: Push the QoS parameter to the RACF, or The RACF requests the QoS parameter from the NACF; in the TISPAN standard, the NASS is set to pass through the network as follows The interaction of the network attachment module obtains the time period based QoS parameter: the QoS parameter is pushed to the RACS, or the RACS requests the QoS parameter from the NASS.

In summary, with the technical solution of the system and method of the present invention, the RACS of the ITU-T and the RACS of the TISPAN in the prior art are used to perform resource admission control by clarifying the policy control of different QoS using different time periods. The problem of time-based QoS policy control cannot be supported. Other features and advantages of the invention will be set forth in the description which follows, The objectives and other advantages of the invention may be realized and obtained by the structure particularly pointed in the appended claims.

The drawings are intended to provide a further understanding of the invention and are intended to be a part of the description of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a functional framework of a RACF in the prior art; FIG. 2 is a schematic diagram of a functional framework of a RACS in the prior art; FIG. 3 is a schematic flowchart of a first embodiment of the admission control method of the present invention; FIG. 5 is a schematic flowchart of a third embodiment of the admission control method of the present invention; FIG. 6 is a schematic flowchart of a fourth embodiment of the admission control method of the present invention; A schematic diagram of the composition of an embodiment of the admission control system.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and embodiments, by which the present invention is applied to the technical means to solve the technical problems, and the realization of the technical effect can be fully understood and Implementation. It should be noted that, if not conflicting, the embodiments of the present invention and the various features in the embodiments may be combined with each other, and are all within the protection scope of the present invention. Additionally, the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although the logical order is illustrated in the flowchart, in some cases, may be different The steps shown or described are performed in the order herein. The core idea of the admission control method of the present invention is that the user and the operator sign a time-based QoS parameter in the user subscription information, for example, the time-based QoS parameter indicates that the bandwidth is provided during the day and the bandwidth is provided at night, so that The operator controls the QoS of the user according to the subscription information of the user; and then saves the QoS parameter in the network attachment module; the admission control unit in the resource admission control module obtains the QoS parameter by interacting with the network attachment module, and then according to the The QoS parameter and the like formulate a time period based admission policy; the resource admission control module performs resource admission control according to the admission policy. The invention adopts the technical solution of the control method, and is applicable to the ITU-T technical standard and the TISPAN technical standard. In the ITU-T technical standard, the network attachment module is a NACF, the resource admission control module is a RACF, the admission control unit is a PD-FE, and the admission policy is a policy rule. In the TISPAN technical standard, the network attachment module is a NASS, the resource admission control module is a RACS, the admission control unit is an A-RACF, and the admission policy is a transmission policy. Specifically, in the ITU-T technical standard, the time-based QoS parameters are signed in the user subscription information, that is, the QoS parameters are different in different time periods, where the QoS parameters may include: bandwidth and/or priority parameters. The time-based QoS parameters are saved in the NACF, pushed by the NACF to the PD-FE in the RACF, or actively requested by the PD-FE to the NACF. The PD-FE formulates time-based policy rules according to the QoS parameters and the like, that is, the policy rules corresponding to different time segments are different. The RACF performs resource admission control according to the policy rules. The PD-FE records the valid running period and/or the expiration time point corresponding to the policy rule, so as to update the policy rule according to the time period. In the TISPAN technical standard, the time-based QoS parameters are signed in the user subscription information, that is, the QoS parameters are different in different time periods, where the QoS parameters may include: bandwidth and/or priority parameters. The time-based QoS parameters are stored in the NASS, pushed by the NASS to the A-RACF in the RACS, or actively requested by the A-RACF to the NASS. The A-RACF formulates a transmission policy according to the QoS parameters and the like, that is, the transmission strategies corresponding to different time segments are different. RACS according to this The transmission strategy performs resource admission control. Wherein, when formulating a time-based transmission strategy,

The A-RACF records the effective running period and/or the expiration time point corresponding to the transmission policy, so as to update the transmission policy according to the time period. FIG. 3 is a schematic flowchart diagram of a first embodiment of an admission control method according to the present invention. The first embodiment initiates a resource request by an SCF. As shown in FIG. 3, the process mainly includes the following steps: Step S301: A user initiates a service request, and sends a request message to the SCF, which triggers the SCF to generate a resource initialization request. Step S302: The SCF determines a QoS requirement parameter (such as a bandwidth, Service type and service level, etc., and then send a resource initialization request message (reserved, that is, the message is reserved resource ^ PD-FE, the resource initialization request message carries information such as media stream description and QoS parameters, to request RACF for QoS Resource authorization and reservation; Step S303, after the PD-FE receives the resource initialization request message, if the subscription information of the user is not stored locally, the PD-FE interacts with the NACF to obtain the subscription information of the user (including the time-based QoS). Parameter), specifically: The QoS parameters subscribed by the user are based on the time period, that is, the QoS parameters of the user may be different in different time periods; for example: in some time periods, the user can obtain a larger bandwidth and a higher The priority is guaranteed, and in other periods, only a smaller bandwidth and a lower priority guarantee are obtained; step S304, The PD-FE performs an authorization check on the request, including verifying whether the requested QoS resource is consistent with the local operator policy rule and the user subscription information from the NACF; Step S305, the PD-FE decides (ie, selects) the requested QoS resource. The access network and the core network, and then the PD-FE sends a resource initialization request message to the corresponding TRC-FE according to the foregoing decision result, to check the resource availability (availability check) of the network involved; step S306, the PD-FE according to step S304 The authorization check result and the resource availability check result of step S305 are used for final admission decision; the PD-FE formulates a time period based policy rule, and records the effective running period and/or the expiration time point of the policy rule to update the policy rule; If the requested QoS resource is rejected, step S309 is performed, otherwise step S307 is performed; step S307, if the final decision policy needs to be installed in the PE-FE, the PD-FE sends a resource initialization request message to the PE-FE to install the final Policy rule, step S308; Step S308, the PE-FE installs the final policy rule from the PD-FE, and sends a resource initialization response message to the PD-FE, where the resource initialization response message carries the result information of the QoS resource request, and ends.

Step S309, the PD-FE sends a resource initialization response message to the SCF, and the resource initialization response message carries the reason for the rejection, and ends. 4 is a schematic flow chart of a second embodiment of the admission control method of the present invention. The second embodiment initiates a resource request by the AF. As shown in FIG. 4, the process mainly includes the following steps: Step S401: A UE initiates a service request to an AF, and triggers an AF to generate a session for the service request.

Step S402, the AF sends a resource request message to the SPDF to request authorization. Step S403: After receiving the resource request message, the SPDF performs an authorization check on the resource request according to the local operator policy rule. If the authorization check is performed, the process proceeds to step S404. If the authorization check fails, the SPDF sends a resource request response to the AF, and ends; Step S404, the SPDF sends a resource request message to the A-RACF to request an authorization check based on the user subscription information and requests to allocate resources; Step S405, A-RACF receives After the resource request message, if the subscription information of the user is not stored locally, the NASS interacts with the NASS to obtain the subscription information of the user (including the time-based QoS parameter), specifically: the QoS parameter subscribed by the user is based on the time period, that is, The user's QoS parameters are different in different time periods; for example: in some time periods, users can obtain larger bandwidth and higher priority guarantee, while in other time periods, only smaller bandwidth and comparison can be obtained. Low priority guarantee; Step S406, A-RACF is based on user subscription information, resource availability, and access network policy Waiting for authorization and admission decisions for the resource request; A-RACF develops a time-based transmission strategy and records the effective runtime and/or failure time of the transmission policy to update the transmission strategy; whether the A-RACF decision needs to be The RCEF installs the transmission policy, if the transmission policy needs to be installed in the RCEF, go to step S407, otherwise go to step S409; step S407, the A-RACF sends a resource request message to the RCEF to install the transmission policy; go to step S408; Step S408, the RCEF installs the transmission policy from the A-RACF, and sends a resource request response message to the A-RACF. Step S409, the A-RACF sends a resource request response message to the SPDF. Step S410, if the resource request needs to use the BGF, The SPDF sends a resource request message to the BGF, where the request message includes a policy rule for controlling the BGF. Step S411, the BGF returns a resource request response message to the SPDF after performing corresponding processing according to the foregoing policy rule. Step S412, the SPDF sends a resource request response message to the AF. FIG. 5 is a schematic flowchart of a third embodiment of an admission control method according to the present invention. The third embodiment initiates a policy update by a PD-FE. As shown in FIG. 5, the process mainly includes the following steps: Step S501: Since the QoS parameters subscribed by the user are different in different time periods, when transitioning from a certain time period to another time period, the PD-FE is triggered according to the current The QoS parameter of the time period is updated by the policy. The specific method is as follows: When the PD-FE delivers the policy rule of the previous time period, the effective running period and/or the expiration time point of the rule are recorded according to the time period parameter of the contract. When the effective running period and/or the expiration time point is reached, the update process of the policy rule is triggered; Step S502, the PD-FE decides (ie selects) the access network and the core network involved in the QoS resource to be modified, and then the PD- The FE sends a resource modification request message to the corresponding TRC-FE according to the foregoing decision result to check resource availability (availability check) of the network involved; step S503, the PD-FE checks according to the QoS parameter of the current time period and the resource availability of step 502. As a result, the final admission decision is made; if the QoS resource to be modified is rejected, the PD-FE sends a resource modification response message to the SCF, and the resource modification response message carries Reason for rejection, otherwise go to step S504; Step S504, if the final decision policy needs to be installed in the PE-FE, the PD-FE sends a resource modification message to the PE-FE to install the final policy rule; go to step S505; S505: The PE-FE installs the final policy rule from the PD-FE, and sends a resource modification response message to the PD-FE. 6 is a schematic flow chart of a fourth embodiment of the admission control method of the present invention, which is implemented by A-RACF initiates a policy update. As shown in FIG. 6, the process mainly includes the following steps: Step S601: Since the QoS parameters subscribed by the user are different in different time periods, when transitioning from a certain time period to another time period, the A-RACF is triggered according to the current The QoS parameter of the time period is updated by the policy. Specifically, when the A-RACF delivers the transmission policy of the previous time period, the effective running period and/or the failure time point of the policy are recorded according to the time period parameter of the subscription. When the effective running period and/or the expiration time point are reached, the update process of the transmission policy is triggered; in step S602, the A-RACF authorizes the resource modification request according to the QoS parameter, the resource availability, and the access network policy of the current time period. And admission decision; whether the A-RACF decision needs to install the transmission policy in the RCEF, if necessary, go to step S603 to execute, otherwise end; step S603, A-RACF sends a resource modification request message to the RCEF to install the transmission policy; Step S604, RCEF Install the transport policy from A-RACF and send a resource modification response message to A-RACF.

Figure 7 is a schematic diagram showing the composition of an embodiment of the admission control system of the present invention. In conjunction with the foregoing description of the technical solution of the method of the present invention, and the method embodiments shown in FIG. 3 to FIG. 6, the system embodiment shown in FIG. 7 mainly includes a network attachment module, a resource admission control module, and is included in the resource admission control module. The admission control unit is shown in NACF 710, RACF 720, and PD-FE 725 in the RACF 720, respectively, wherein: the network attachment module is shown in the figure as NACF 710 in the ITU-T standard. The network attachment module is configured to: save a time-based quality of service (QoS) parameter signed in the user subscription information;

The admission control unit is shown in the figure as a PD-FE 725 in the ITU-T standard, the admission control unit is configured to: interact with the network attachment module, obtain the QoS parameter, and formulate a time period based on the QoS parameter The admission policy is shown in the figure by the RACF 720 in the ITU-T standard, and the resource admission control module is configured to: perform resource admission control according to the admission policy. Wherein, when the admission control unit formulates the admission policy, further records the acceptance policy corresponding to the admission policy Effective period of operation and/or point of failure. The system embodiment shown in Figure 7 is also applicable to the TISPAN standard. In the TISPAN standard, the network attachment module is a NASS, the resource admission control module is a RACS, and the admission control unit is an A-RACF. Wherein, in the ITU-T standard, the NACF is used to push the QoS parameter to the PD-FE, or the PD-FE is used to request the QoS parameter from the NACF; in the TISPAN standard, the NASS is used for The QoS parameter is pushed to the A-RACF, or the A-RACF is used to request the QoS parameter from the NASS.

Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any particular combination of hardware and software. While the embodiments of the present invention have been described above, the described embodiments are merely for the purpose of understanding the invention and are not intended to limit the invention. Any modification and variation of the form and details of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention. It is still subject to the scope defined by the appended claims.

INDUSTRIAL APPLICABILITY The present invention solves the problem that the RACS of the ITU-T and the RACS of the TISPAN cannot support the time-based QoS policy control when performing resource admission control in the prior art by clarifying the policy control using different QoS for different time periods. .

Claims

Claim

An admission control method, comprising: signing a time-based quality of service (QoS) parameter in a user subscription information, and saving the time-based QoS parameter in a network attachment module; and the resource admission control module And interacting with the network attachment module to obtain the time-based QoS parameter; and the resource admission control module formulating an admission policy according to the time-based QoS parameter, and performing resource admission control according to the admission policy.

2. The method according to claim 1, wherein: in the step of the resource admission control module formulating an admission policy, recording an effective runtime period and/or an expiration time point corresponding to the admission policy.

3. The method of claim 1 or 2, wherein: the QoS parameters comprise bandwidth and/or priority.

4. The method according to claim 1 or 2, wherein: in the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard, the network attachment module is a network attachment control function (NACF), and the resource admission control module a resource admission control function (RACF), and the admission policy is a policy rule; in a communication and Internet convergence service and protocol (TISPAN) standard for advanced networks, the network attachment module is a network attachment subsystem (NASS) The resource admission control module is a resource admission control subsystem (RACS), and the admission policy is a transmission policy.

The method of claim 4, wherein the step of obtaining, by the resource admission control module, the QoS parameter by interaction with the network attachment module comprises: in the ITU-T standard, the NACF The QoS parameters are pushed to the RACF, Or the RACF requests the QoS parameter from the NACF; or in the TISPAN standard, the NASS pushes the QoS parameter to the RACS, or the RACS requests the QoS parameter from the NASS.

An admission control system, comprising: a network attachment module and a resource admission control module, wherein: the network attachment module is configured to: save time-based quality of service (QoS) parameters signed in user subscription information; The resource admission control module is configured to: obtain the time-based QoS parameter by interacting with the network attachment module, formulate an admission policy according to the time-based QoS parameter, and perform resource admission control according to the admission policy.

The system according to claim 6, wherein: the resource admission control module includes an admission control unit, and when the resource admission control module formulates the admission policy, the admission control unit is configured to: record the admission policy Corresponding effective runtime and/or failure time points.

8. The system of claim 7, wherein: in the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard, the admission control unit is a Policy Decision Function Entity (PD-FE);

In the Traffic and Internet Converged Service and Protocol (TISPAN) standard for advanced networks, the admission control unit is an Access Resource Admission Control Function (A-RACF).

9. The system according to claim 6 or 7, wherein: in the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) standard, the network attachment module is a network attachment control function (NACF), and the resource admission control module For the resource admission control function (RACF); in the communication and Internet convergence service and protocol (TISPAN) standard for advanced networks, the network attachment module is a network attachment subsystem (NASS), and the resource admission control module is Resource Admission Control Subsystem (RACS).

10. The system of claim 9, wherein: in the ITU-T standard, the NACF is configured to obtain the time period based QoS parameter by interaction with the network attachment module as follows: Pushing the QoS parameter to the RACF, or the RACF requests the QoS parameter from the NACF; in the TISPAN standard, the NASS is configured to interact with the network attachment module in the following manner Obtaining the time period based QoS parameter: pushing the QoS parameter to the RACS, or the RACS requesting the QoS parameter from the NASS.