CN101765162A - Push mode type resource receiving control method - Google Patents
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Abstract
The invention provides a push mode type resource receiving control method, which comprises the following steps: receiving a resource initialization request which is sent by a business control function SCF and is used for business request service quality QoS resources; then, carrying out an initial decision making on the request by a decision making function entity PD-FE of the belonging network; next, sending the resource initialization request for the business request service quality QoS resources to the PD-FE of the visited network; and carrying out decision receiving on the received resource initialization request by the PD-FE of the visited network. The resource receiving control method provided by the invention clearly defines the respective function attributes of the RACF of the belonging network and the RACF of the visited network, and the interaction process between the RACF of the belonging network and the RACF of the visited network, and the resource receiving and control problem of nomadism supporting and interaction between relating fields is solved.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of resource acceptance control method of push-model.
Background technology
NGN (Network Generation Network, next generation network) is a hot research problem in current communication standard field, it adopts IP grouping technology such as (Internet Protocol, Internet Protocols) as communication of Bearer Network converged fixed and mobile communication.NGN can provide abundanter multimedia service, as the emerging service with real-time requirement is (as VoIP (Voice over IP, IP-based voice), video conference, multimedia remote teaching, video request program etc.), these business need communication networks can provide efficiently service quality (Quality of Service, QoS) support end to end; The user is also more and more higher to the requirement of network service quality simultaneously.Therefore, how providing end to end, QoS will be one of key problem of NGN.
ITU-T is the telecommunication standardization sector of ITU (International Telecommunication Union, International Telecommunications Union), has formulated the standard of relevant resource and admission control.In up-to-date RACF (Resource and Admission Control Functions, the resource accommodating control function) draft of announcing in September, 2008, provide the functional framework of RACF, as shown in Figure 1 at ITU-T.RACF is made up of two parts: policy deciding functional entity (Policy Decision Functional Entity, PD-FE) and transfer resource controlled function entity (Transport Resource Control Functional Entity, TRC-FE).
PD-FE and transmission technology are irrelevant, and (Service Control Functions SCF) also has nothing to do with service control function.The business information that PD-FE policing rule Network Based, SCF provide, network attachment controlled function (Network Attachment Control Functions, NACF) the transport layer CAMEL-Subscription-Information that provides, and the Resource Availability result of decision that provides of TRC-FE, make the last decision-making of resource and admission control.
TRC-FE and independent of service, but relevant with transmission technology.TRC-FE is responsible for collecting and safeguarding transmission network information and resource state information.After receiving resource request from PD-FE, TRC-FE carries out resource-based admittance and controls based on QoS, priority demand, Resource Availability information and the policing rule relevant with transmission.
(Policy Enforcement Functional Entity, (Transport Resource Enforcement Functional Entity TRE-FE) forms transport layer PE-FE) to carry out functional entity with transfer resource by policy execution functional entity.PE-FE wraps packet gateway, can be positioned at the local network of users (Customer PremisesNetwork, CPN) and between the access network, between Access Network and the core net or between the different operators network, it is the key node of supporting that dynamic QoS control, port address conversion and control and NAT (Network AddressTranslator, network address translation) pass through.TRE-FE carries out the transfer resource policing rule that TRC-FE issues, and its scope and function and Rn interface remain further research, not in the research range in R2 stage.
Below above-mentioned each network element entity is described in detail.
●PD-FE
PD-FE is a policy deciding functional entity, it makes preliminary QoS resource decision based on medium streaming session information (obtaining from SCF by the Rs interface), user's transfer resource CAMEL-Subscription-Information (obtaining from NACF by the Ru interface), with affirmation whether enough QoS resources are arranged alternately with TRC-FE then, make a final admittance decision-making at last, and this decision-making is handed down to the PE-FE execution.
●TRC-FE
TRC-FE mainly is responsible for resource control, and the resource in its monitor network is also collected relevant information, replys according to concrete resource situation when the PD-FE request resource.
●PE-FE
PE-FE carries out policy control (gate, bandwidth, traffic classification and mark, traffic shaping, two layers and three layers of QoS mapping, collection and report resource use information etc.) under guidance at PD-FE.
●TRE-FE
The present explanation of TRE-FE agreement is to carry out two layers strategy execution under TRC-FE instructs, and is definite but concrete function and scope all not have.
At present, for solution relates between the territory mutual and supports nomadic resource and admission control, provided RACF network scenarios figure as shown in Figure 2.Among Fig. 2, SCF is positioned at the NGN home network, and mutual with the PD-FE of NGN home network; The PD-FE of home network is mutual by the PD-FE of Ri interface and NGN visit net; PD-FE is mutual by PE-FE, TRC-FE in Rw, Rt interface and the Home Network respectively.
At above-mentioned scene, also there be not relating between the territory mutual and support nomadic resource and admission control technology scheme under the push-model in the prior art.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, provide a kind of relate between the territory mutual and support nomadic push-model resource acceptance control method.
In order to address the above problem, the invention provides a kind of resource acceptance control method of push-model, this method comprises:
After receiving the initializing resource request that is used to service request service quality QoS resource of service control function SCF transmission, the policy deciding functional entity PD-FE of home network is sent as the initializing resource request of described service request QoS resource after initial policy decision is carried out in this request to the PD-FE of visited network;
The PD-FE of visited network admits decision-making to the initializing resource request that receives.
In addition, the policy deciding functional entity PD-FE of home network carries out authorization check before initial policy decision is carried out in this request, and is specific as follows:
Whether the QoS resource that the PD-FE of home network is asked according to the described initializing resource request that receives at least and home network policing rule and user signing contract information consistent carries out described authorization check.
In addition, the policy deciding functional entity PD-FE of home network carries out initial policy decision to this request, is meant:
The PD-FE of home network carries out described initial policy decision according to user signing contract information and home network policing rule at least.
In addition, the PD-FE of visited network carries out the Resource Availability inspection before decision-making is admitted in the initializing resource request that receives, and is specific as follows:
The PD-FE of visited network makes a strategic decision to the related network of QoS resource that the described initializing resource request that receives is asked, and send the initializing resource request to the transfer resource controlled function entity TRC-FE of the visited network of correspondence according to the result of decision, to check the Resource Availability of related network.
In addition, whether the policing rule of the PD-FE of the visited network QoS resource of being asked according to the described initializing resource request that receives at least and visited network is consistent carries out described strategic decision-making.
In addition, finish described admittance decision-making after, the PD-FE of visited network will admit the decision strategy of decision-making generation to be included in the policy execution functional entity PE-FE that sends to visited network in the initializing resource request;
After receiving the initializing resource request that the PD-FE of visited network sends, the PE-FE of visited network installs described decision strategy.
The present invention also provides a kind of resource acceptance control method of push-model, and this method comprises:
After receiving the resource modifying request that is used to business modification service quality QoS resource of SCF transmission, the PD-FE of home network is sent as the resource modifying request of described business modification QoS resource after initial policy decision is carried out in this request to the PD-FE of visited network;
The PD-FE of visited network admits decision-making to the resource modifying request that receives.
In addition, finish described admittance decision-making after, the PD-FE of visited network will admit the decision strategy of decision-making generation to be included in the policy execution functional entity PE-FE that sends to visited network in the resource modifying request;
After receiving the resource modifying request that the PD-FE of visited network sends, the PE-FE of visited network installs described decision strategy.
In addition, the PD-FE of home network carries out authorization check before initial policy decision is carried out in this request, and is specific as follows:
Whether the QoS resource that the PD-FE of home network is revised according to the described resource modifying request that receives at least and home network policing rule and user signing contract information consistent carries out described authorization check.
In addition, the PD-FE of home network carries out initial policy decision to this request and is meant: the PD-FE of home network carries out described initial policy decision according to user signing contract information and home network policing rule at least.
In addition, the PD-FE of visited network admits decision-making to be meant to the resource modifying request that receives:
Whether the QoS resource that the PD-FE of visited network is revised according to the described resource modifying request that receives at least and the policing rule of visited network consistent carries out described strategic decision-making.
In addition, the PD-FE of visited network carries out the Resource Availability inspection before decision-making is admitted in the resource modifying request that receives, and is specific as follows:
The PD-FE of visited network makes a strategic decision to the related network of QoS resource that the described resource modifying request that receives is revised, and send the resource modifying request to the transfer resource controlled function entity TRC-FE of the visited network of correspondence according to the result of decision, to check the Resource Availability of related network.
The present invention also provides a kind of resource acceptance control method of push-model, and this method comprises:
After being used to of receiving that SCF sends discharged the resource release request of professional QoS resource, the PD-FE of home network sent to this request the PD-FE of visited network;
The PD-FE of visited network and the TRC-FE of visited network are mutual, with the QoS resource that takies on the TRC-FE that discharges visited network.
In addition, receive described resource release request after, the PD-FE of visited network sends resource release request to the PE-FE of visited network, goes up the strategy of the described business of installing with the PE-FE that discharges visited network.
The present invention proposes a kind of resource acceptance control method of push-model, clear and definite home network RACF and visit net RACF functional attributes separately, and reciprocal process between the two, solved relate between the territory mutual and support nomadic resource and admission control problem.
Description of drawings
Fig. 1 is the RACF functional frame composition of ITU-T in the prior art;
Fig. 2 is RACF network configuration figure of the prior art;
Fig. 3 is the flow chart of the resource request flow process initiated by SCF in the resource acceptance control method of embodiment of the invention push-model;
Fig. 4 is the flow chart of the resource modifying flow process initiated by SCF in the resource acceptance control method of embodiment of the invention push-model;
Fig. 5 is the flow chart of the resource release flow initiated by SCF in the resource acceptance control method of embodiment of the invention push-model.
Embodiment
For solution relates between the territory mutual and supports nomadic resource and admission control, the present invention proposes a kind of resource acceptance control method, clear and definite home network RACF and visit net RACF functional attributes separately, and reciprocal process between the two.
The RACF basis of home network is from the business information of SCF, from the user signing contract information of NACF and local carrier policy rule (can be called the home network policing rule) execution admittance control.
The RACF of visit net carries out to admit according to Resource Availability, with the SLA (ServiceLevel Agreement, service-level agreement) of NGN home network operator and local carrier policy rule (can be called the visited network policing rule) and controls.
PD-FE during PD-FE in the home network nets with visit is undertaken alternately by the Ri interface, and both are by the information interaction matching coordinative work of Ri interface.
In addition, the present invention has also further proposed corresponding resource and admission control flow, comprises resource request process, the resource modifying flow process of SCF initiation and the resource release flow that SCF initiates that SCF initiates.
Describe the present invention below in conjunction with drawings and Examples.
Fig. 3 is the flow chart of the resource request flow process initiated by SCF in the resource acceptance control method of embodiment of the invention push-model, and this flow process may further comprise the steps:
(301) user initiates service request, sends a request message to SCF, triggers SCF and generates the initializing resource request;
(302) SCF determines the QoS demand parameter (as bandwidth, type of service, the grade of service etc.) of institute's requested service, send initializing resource request message (reservation) then and give the PD-FE (note is made PD-FE (H)) of home network, carry information such as Media Stream description and qos parameter in the message, carry out QoS resource authorization and reservation with request RACF;
(303) PD-FE (H) carries out authorization check to this request, comprises whether the QoS resource of checking request reaches consistent from the user signing contract information of NACF with local carrier policy rule (home network policing rule); If authorization check is by (promptly Qing Qiu QoS resource is consistent with home network policing rule and user signing contract information), then PD-FE (H) carries out initial strategic decision-making according to user signing contract information, local carrier policy rule information such as (home network policing rules) to this service request;
(304) because PD-FE (H) does not have the transport layer resource of being asked, the initializing resource request message is further sent to the PD-FE (note is made PD-FE (V)) of visited network;
(305) PD-FE (V) carries out authorization check (comprising that the initial policy decision result that PD-FE (H) is carried out checks) to this request, comprises whether the QoS resource (qos parameter) of checking request is consistent with local carrier policy rule (visited network policing rule);
The related Access Network and the core net of QoS resource of (306) PD-FE (V) decision-making (promptly selecting) request, PD-FE (V) sends the TRC-FE (note is made TRC-FE (V)) that initializing resource request message (availability inspection) is given corresponding visited network according to the above-mentioned result of decision then, to check the Resource Availability of related network;
(307) PD-FE (V) carries out final admittance decision-making according to the authorization check result of step 305 and the Resource Availability check result of step 306; If the QoS resource of being asked is rejected, then PD-FE (V) sends the initializing resource response message to PD-FE (H), carries the reason of refusal in this message, otherwise carries out next step;
(308) if final decision strategy need be installed at PE-FE, PD-FE (V) sends the PE-FE (note make PE-FE (V)) of initializing resource request message to visited network, so that final decision strategy to be installed;
(309) PE-FE (V) installs the final decision strategy from PD-FE (V), and the transmission initializing resource responds to PD-FE (V);
Step 308 and 309 is an optional step.
(310) PD-FE (V) transmission initializing resource responds to PD-FE (H);
(311) PD-FE (H) transmission initializing resource responds to SCF.
Comprise the object information of whether admitting the QoS resource request in the above-mentioned initializing resource response.
Fig. 4 is the flow chart of the resource modifying flow process initiated by SCF in the resource acceptance control method of embodiment of the invention push-model, and this flow process may further comprise the steps:
(401) user initiates the business modification request, sends modify request messages to SCF, triggers SCF and generates the resource modifying request;
(402) SCF determines the qos parameter (as bandwidth, type of service, the grade of service etc.) of the business of required modification, sends the resource modifying request message then to PD-FE (H), carries the qos parameter that needs modification in the message;
(403) PD-FE (H) checks this modification request, comprises whether the amended QoS resource of checking reaches consistent from the user signing contract information of NACF with local carrier policy rule; If authorization check passes through, then PD-FE (H) carries out initial strategic decision-making according to user signing contract information, local carrier policy rule information such as (home network policing rules) to this resource modifying request;
(404) because PD-FE (H) does not have the transport layer resource of required modification, the resource modifying request message is further sent to PD-FE (V);
(405) PD-FE (V) carries out authorization check (comprising that the initial policy decision result that PD-FE (H) is carried out checks) to this modification request, comprises whether the amended QoS resource of checking (qos parameter) is consistent with local carrier policy rule (being the visited network policing rule);
The related Access Network and the core net of QoS resource of the required modification of (406) PD-FE (V) decision-making (promptly selecting), PD-FE (V) sends resource modifying request message (availability inspection) according to the above-mentioned result of decision and gives corresponding TRC-FE (V) then, to check the Resource Availability of related network;
(407) PD-FE (V) carries out final admittance decision-making according to the authorization check result of step 405 and the Resource Availability check result of step 406; If the QoS resource of required modification is rejected, then PD-FE (V) sends the resource modifying response message to PD-FE (H), carries the reason of refusal in this message, otherwise carries out next step;
(408) if final decision strategy need be installed at PE-FE, PD-FE (V) sends resource modifying message to PE-FE (V), so that final decision strategy to be installed;
(409) PE-FE (V) installs the final decision strategy from PD-FE (V), and the transmission resource modifying responds to PD-FE (V);
Step 408 and 409 is an optional step.
(410) PD-FE (V) transmission resource modifying responds to PD-FE (H);
(411) PD-FE (H) transmission resource modifying responds to SCF.
Comprise the object information of whether admitting the request of QoS resource modifying in the above-mentioned initializing resource response.
Fig. 5 is the flow chart of the resource release flow initiated by SCF in the resource acceptance control method of embodiment of the invention push-model, and this flow process may further comprise the steps:
(501) user initiates the professional request that discharges, and sends to discharge request message to SCF, triggers SCF and generates resource release request;
(502) SCF sends resource release request message to PD-FE (H), carries the QoS resource information that needs release in the message;
(503) because PD-FE (H) does not have the transport layer resource of required release, resource release request message is further sent to PD-FE (V);
(504) PD-FE (V) and TRC-FE (V) are alternately to discharge the corresponding QoS resource that takies on the TRC-FE (V);
Above-mentioned reciprocal process specifically comprises: PD-FE (V) sends resource release request to TRC-FE (V), and TRC-FE (V) returns resource to PD-FE (V) and discharges response.
(505) if PE-FE (V) has installed the strategy (promptly carrying out step 308 and/or step 408) of this business, PD-FE (V) transmission resource release request message to unload the strategy on it, discharges the QoS resource to PE-FE (V);
(506) PE-FE (V) replys resource release response and gives PD-FE (V);
Step 505 and 506 is optional steps.
(507) PD-FE (V) sends resource release response to PD-FE (H);
(508) PD-FE (H) sends resource release response to SCF.
The present invention proposes a kind of resource acceptance control method of push-model, clear and definite home network RACF and visit net RACF functional attributes separately, and reciprocal process between the two, solved relate between the territory mutual and support nomadic resource and admission control problem.
Claims (14)
1. the resource acceptance control method of a push-model is characterized in that, this method comprises:
After receiving the initializing resource request that is used to service request service quality QoS resource of service control function SCF transmission, the policy deciding functional entity PD-FE of home network is sent as the initializing resource request of described service request QoS resource after initial policy decision is carried out in this request to the PD-FE of visited network;
The PD-FE of visited network admits decision-making to the initializing resource request that receives.
2. the method for claim 1 is characterized in that, the policy deciding functional entity PD-FE of home network carries out authorization check before initial policy decision is carried out in this request, and is specific as follows:
Whether the QoS resource that the PD-FE of home network is asked according to the described initializing resource request that receives at least and home network policing rule and user signing contract information consistent carries out described authorization check.
3. method as claimed in claim 2 is characterized in that, the policy deciding functional entity PD-FE of home network carries out initial policy decision to this request, is meant:
The PD-FE of home network carries out described initial policy decision according to user signing contract information and home network policing rule at least.
4. method as claimed in claim 3 is characterized in that, the PD-FE of visited network carries out the Resource Availability inspection before decision-making is admitted in the initializing resource request that receives, and is specific as follows:
The PD-FE of visited network makes a strategic decision to the related network of QoS resource that the described initializing resource request that receives is asked, and send the initializing resource request to the transfer resource controlled function entity TRC-FE of the visited network of correspondence according to the result of decision, to check the Resource Availability of related network.
5. method as claimed in claim 4 is characterized in that,
Whether the QoS resource that the PD-FE of visited network is asked according to the described initializing resource request that receives at least and the policing rule of visited network consistent carries out described strategic decision-making.
6. method as claimed in claim 5 is characterized in that,
After finishing described admittance decision-making, the decision strategy that the PD-FE of visited network will admit decision-making to generate is included in the policy execution functional entity PE-FE that sends to visited network in the initializing resource request;
After receiving the initializing resource request that the PD-FE of visited network sends, the PE-FE of visited network installs described decision strategy.
7. the resource acceptance control method of a push-model is characterized in that, this method comprises:
After receiving the resource modifying request that is used to business modification service quality QoS resource of SCF transmission, the PD-FE of home network is sent as the resource modifying request of described business modification QoS resource after initial policy decision is carried out in this request to the PD-FE of visited network;
The PD-FE of visited network admits decision-making to the resource modifying request that receives.
8. method as claimed in claim 7 is characterized in that,
After finishing described admittance decision-making, the decision strategy that the PD-FE of visited network will admit decision-making to generate is included in the policy execution functional entity PE-FE that sends to visited network in the resource modifying request;
After receiving the resource modifying request that the PD-FE of visited network sends, the PE-FE of visited network installs described decision strategy.
9. method as claimed in claim 8 is characterized in that, the PD-FE of home network carries out authorization check before initial policy decision is carried out in this request, and is specific as follows:
Whether the QoS resource that the PD-FE of home network is revised according to the described resource modifying request that receives at least and home network policing rule and user signing contract information consistent carries out described authorization check.
10. method as claimed in claim 9 is characterized in that, the PD-FE of home network carries out initial policy decision to this request and is meant: the PD-FE of home network carries out described initial policy decision according to user signing contract information and home network policing rule at least.
11. method as claimed in claim 10 is characterized in that, the PD-FE of visited network admits decision-making to be meant to the resource modifying request that receives:
Whether the QoS resource that the PD-FE of visited network is revised according to the described resource modifying request that receives at least and the policing rule of visited network consistent carries out described strategic decision-making.
12. method as claimed in claim 11 is characterized in that, the PD-FE of visited network carries out the Resource Availability inspection before decision-making is admitted in the resource modifying request that receives, and is specific as follows:
The PD-FE of visited network makes a strategic decision to the related network of QoS resource that the described resource modifying request that receives is revised, and send the resource modifying request to the transfer resource controlled function entity TRC-FE of the visited network of correspondence according to the result of decision, to check the Resource Availability of related network.
13. the resource acceptance control method of a push-model is characterized in that, this method comprises:
After being used to of receiving that SCF sends discharged the resource release request of professional QoS resource, the PD-FE of home network sent to this request the PD-FE of visited network;
The PD-FE of visited network and the TRC-FE of visited network are mutual, with the QoS resource that takies on the TRC-FE that discharges visited network.
14. method as claimed in claim 13 is characterized in that,
After receiving described resource release request, the PD-FE of visited network sends resource release request to the PE-FE of visited network, goes up the strategy of the described business of installing with the PE-FE that discharges visited network.
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Application publication date: 20100630 |