CN100442759C - Method for business layer requesting resourcing to transmission layer in next generation network - Google Patents
Method for business layer requesting resourcing to transmission layer in next generation network Download PDFInfo
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- CN100442759C CN100442759C CNB200510027692XA CN200510027692A CN100442759C CN 100442759 C CN100442759 C CN 100442759C CN B200510027692X A CNB200510027692X A CN B200510027692XA CN 200510027692 A CN200510027692 A CN 200510027692A CN 100442759 C CN100442759 C CN 100442759C
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Abstract
A method of requesting resource from transmission layer by service layer in next generation network includes querying access contracted-resource information in transmission layer first before resource request information is launched by service layer device when session is set up, regulating resource to be requested by service layer device according to obtained access contracted-resource information then launching up resource request to transmission layer device by service layer device.
Description
Technical field
The present invention relates to next generation network technology, particularly in the next generation network operation layer to the method for transport layer request resource.
Background technology
Next generation network (Next Generation Network is called for short " NGN ") is a milestone of telecommunication history, and it indicates the arrival in new generation telecommunication network epoch.Angle from development, NGN is from traditional public switched telephone network based on circuit switching (Public Switched TelephoneNetwork, abbreviation " PSTN ") stepped gradually to paces in based on packet switching, it has carried all business of original PSTN network, great amount of data transmission is unloaded to internetworking agreement (Internet Protoco1, be called for short " IP ") in the network to alleviate the heavy burden of PSTN network, the new features with the IP technology increase and have strengthened many old and new's business again.
In this sense, NGN is based on time division multiplexing (Time DivisionMultiplexing, be called for short " TDM ") the PSTN speech network and the product that merges based on the packet network of internetworking agreement/asynchronous transfer mode (IP/ATM), it makes that integrated services such as voice, video, data become possibility on new generation network.
At present, ITU Telecommunication Standardization Sector (International Telecommunication UnionTelecommunication Standardization Sector, be called for short " ITU-T ") and be used for the telecommunications of earlier nearly network and business and agreement (Telecommunications and Internetconverged Services and Protocols for Advanced Networking) that the internet merges are organized all at the following NGN network of network framework of formulation as telecommunication standard international and Europe respectively.As shown in Figure 1, the network architecture of NGN generally speaking can be divided into operation layer and transport layer two big levels.
Wherein, operation layer is mainly finished such as internet protocol multimedia subsystem (IP MultimediaSubsystem, abbreviation " IMS "), public switched telephone network (Public Switched TelephoneNetwork, be called for short " PSTN ")/integrated services digital network (Integrated Services Digital Network, the service control function of various application such as emulation abbreviation " ISDN "), Streaming Media, and miscellaneous service is provided.
Transport layer is mainly finished user's the network insertion and the transmitting function of diverse network message.The function that transport layer is finished can be subdivided into resource admission control function (Resource Admission ControlFunctions again, abbreviation " RACF "), network insertion attached function (Network Access AttachmentFunctions is called for short " NAAF "), transmitting function three parts.Wherein, NAAF mainly finishes the network configuration of Certificate Authority, address assignment, the management of user's accessing position information and the terminal of network access layer; Transmitting function is mainly finished the transmission of various information under the control of above-mentioned subsystem; RACF mainly finishes control, distribution, the management function of bearer network resource based on business demand, guarantee professional service quality.Highlight RACF below.
RACF has realized carrying out the arbitration function of resource negotiation and distribution between operation layer and transport layer, its position in the whole framework of NGN as shown in Figure 2.In the ITU-T normal structure, the major function of RACF is the QoS control such as resource reservation, access control and gate, wherein, access control refers to can determine whether authorized user inserts with situation etc. according to user's subscription data with based on the policing rule of operator and Internet resources.Another major function of RACF is that NAPT/FW passes through control.
The correlation of each functional entity among the NGN is described below with reference to Fig. 2.At first, service control function and RACF carry out information interaction and finish professional resource control at the NGN transport layer; The second, CPE and service control function and transmitting function realize resource request and negotiation functionality alternately; The 3rd, RACF and transmitting function realize packet filtering alternately, information classification, mark and policing rule, RSVP and distribution, network address port conversion, IP address anti-spoofing, network address translation (Network AddressTranslation, be called for short " NAT ")/fire compartment wall (Firewall is called for short " FW ") passes through, and uses functions such as metering; The 4th, RACF and NAAF check user's CAMEL-Subscription-Information alternately; The 5th, the part that service control function and NAAF obtain the user alternately inserts information such as CAMEL-Subscription-Information, on-position (access device sign and line identification), access authentication result.
In ITU-T and TISPAN relevant criterion, service control function and RACF realize the resource control of customer service at transport layer alternately, should realize alternately by Gq ' interface, (the Session Control Proxy Function of the session control agent functionality in service control function just, abbreviation " SCPF ") and on the interface between the decision of the strategy among the RACF function (Policy Decision Function is called for short " PDF ") realize.Fig. 3 illustrates Gq ' interface position.Persons skilled in the art know that all interfaces all are Gq ' interfaces between service control function and the PDF.
At existing operation layer in the method for transport layer request resource, operation layer is according to the resource of service request from user decision session needs, the also clear and definite resource request that can transmit up by application layer signaling expansion or special application layer resource signaling according to CPE, and initiate resource request by the PDF of SCPF in RACF.
After this, PDF is according to the subscription data of user in NAAF, determines whether that based on the policing rule and the existing resource situation of operator authorization resources uses.
If authorize, RACF will send orders such as gate, bag label and medium control to transmitting function, send the resource admission message by PDF to service control function simultaneously; Otherwise, then send refuse information to service control function.This reciprocal process may be passed through several times.
In the such scheme, service control function is according to the resource of service request from user decision session needs, the perhaps clear and definite resource request of transmitting up by application layer signaling expansion or special application layer resource signaling according to CPE, by SCPF directly the PDF in RACF initiate resource request.PDF is according to the subscription data of user in NAAF, determines whether that based on the policing rule and the existing resource situation of operator authorization resources uses.
Wherein, the reason that PDF may refuse the service resources request comprises that at least user's signatory resource information can not satisfy professional resource requirement, and perhaps existing available resources can not satisfy professional resource requirement.This programme is directly initiated resource request to RACF by service control function, causing can not satisfying owing to user's signatory resource information professional resource requirement makes this time session set up failure, service control function needs initiation session resource request again, postponed the conversation switching time, and increased network traffics, wasted Internet resources to a certain extent.
Summary of the invention
In view of this, main purpose of the present invention is to provide in a kind of next generation network operation layer to the method for transport layer request resource, makes operation layer increase probability of successful of transport layer resource request.
For achieving the above object, the invention provides that operation layer comprises following steps to the method for transport layer request resource in a kind of next generation network:
When session is set up, the access CAMEL-Subscription-Information of operation layer equipment elder generation inquiring user, and judge the current requirement of wanting requested resource whether to meet CAMEL-Subscription-Information, if do not meet according to CAMEL-Subscription-Information adjustment want after the requested resource to transport layer equipment initiation resource request.
Wherein, described operation layer equipment can be service control function or professional control and application subsystem.
In this external described method, described transport layer equipment can be resource admission control function or resource admission control subsystem.
In this external described method, described service control function is inquired about described user's CAMEL-Subscription-Information from the network insertion attached function.
In this external described method, also comprise following steps:
When described resource admission control function is handled from the resource request of service control function, according in advance setting decision whether to network insertion attached function inquiring user subscription data.
In this external described method, also comprise following steps:
When described resource admission control function is handled from the resource request of service control function, according to the source decision of resource request whether to network insertion attached function inquiring user subscription data.
In this external described method, described operation layer equipment also can comprise the substep of holding consultation with the customer premises equipment, CPE of initiating described session when inserting the CAMEL-Subscription-Information adjustment and want requested resource according to the user.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, when session is set up, operation layer equipment (for example service control function) is the signatory resource information of first access to the NAAF inquiring user before initiating resource request message, adjust requested resource in view of the above, initiate resource request to transport layer equipment (for example RACF) again.If operation layer equipment had been looked into user's access CAMEL-Subscription-Information, then transport layer equipment can save and look into the step that the user inserts CAMEL-Subscription-Information.In order to make transport layer equipment can be suitable for dissimilar operation layer equipment (look into or do not look into user insert CAMEL-Subscription-Information), transport layer equipment can be according to preestablishing or whether the source decision of resource request looks into user's access CAMEL-Subscription-Information.
Difference on this technical scheme, brought comparatively significantly beneficial effect, that is: because of having looked into user's access CAMEL-Subscription-Information in the past in advance in the initiation resource request and having adjusted, so requested resource one fixes in the signatory scope, transport layer equipment can be with the refusal request of serving as reasons above signatory resource, and this is to ask one of most important reason of being refused, thereby increased greatly and once asked probability of successful, the also corresponding raising of efficient that session is set up, the data traffic of interface is also reduced between transport layer equipment and the operation layer equipment.
Because operation layer equipment has been looked into user's access CAMEL-Subscription-Information when session is set up, look into the step that the user inserts CAMEL-Subscription-Information so can in transport layer equipment, save, improve the treatment effeciency of transport layer equipment.
If whether transport layer equipment is looked into the user according to the source decision of resource request and is inserted CAMEL-Subscription-Information, to not looking into CAMEL-Subscription-Information from the operation layer equipment that adopts the present invention program, to looking into CAMEL-Subscription-Information from the operation layer equipment that adopts the prior art scheme, then can tackle two class operation layer equipment simultaneously with a transport layer equipment, take into account efficient and compatibility, thereby make the present invention practical more.
Description of drawings
Fig. 1 is a NGN network architecture schematic diagram;
Fig. 2 is the RACF position view among the NGN;
Fig. 3 is the Gq ' interface schematic diagram among the NGN;
Fig. 4 illustrates according to the signalling diagram of operation layer in the flow process of transport layer request resource among the NGN of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Generally speaking, principle of the present invention is, the access CAMEL-Subscription-Information of operation layer equipment elder generation inquiring user, and judge the current requirement of wanting requested resource whether to meet CAMEL-Subscription-Information, if do not meet according to CAMEL-Subscription-Information adjustment want requested resource, initiate resource request to transport layer equipment then.By checking user's access CAMEL-Subscription-Information in the past in advance in the initiation resource request and adjusting, guarantee that requested resource is in signatory scope, avoided transport layer equipment with the refusal request of serving as reasons above signatory resource, increased greatly and once asked probability of successful, improve the efficient that session is set up, and reduced the data traffic of interface between transport layer equipment and the operation layer equipment.In addition,, look into the step that the user inserts CAMEL-Subscription-Information, improve the treatment effeciency of transport layer equipment so can in transport layer equipment, save owing to the access CAMEL-Subscription-Information of having looked into the user during operation layer equipment is when session is set up.Wherein, the operation layer equipment among the present invention can be service control function, and transport layer equipment can be RACF, but be not limited thereto, in other embodiments of the invention, operation layer equipment can be professional control and application subsystem, and transport layer equipment can be resource admission control subsystem.
Fig. 4 illustrates according to the signalling diagram of operation layer in the flow process of transport layer request resource among the NGN of first embodiment of the invention.As shown in Figure 4, at first, in step 401: when session was set up, CPE sent service request or resource request to service control function.
Then, in step 402: service control function is to the signatory resource information of the access of NAAF inquiring user.
Then, return user's the signatory resource information of access to service control function at step 403:NAAF.It is pointed out that and the invention is not restricted to by the signatory resource information of the access of NAAF inquiring user.In other embodiments of the invention, service control function also can be from the signatory resource information of the access of third party device inquiring user independently.
Subsequently, in step 404: whether service control function meets the requirement of CAMEL-Subscription-Information according to the resource of judging current requirement, if institute's requested resource does not meet user signing contract information, then the resource of service request is adjusted in the signatory scope, and enter step 405, if meet user signing contract information, then do not adjust, directly enter step 405.
At last, in step 405: service control function is initiated resource request to RACF.Owing to looked into user's access CAMEL-Subscription-Information before the operation layer equipment,, improved the treatment effeciency of transport layer equipment so can in transport layer equipment, save the step of looking into user signing contract information.After this processing is identical with prior art, repeats no more herein.
In the above-described embodiments, because operation layer equipment has been looked into user signing contract information in advance and adjusted, so requested resource one fixes in the signatory scope, transport layer equipment can be with the refusal request of serving as reasons above signatory authority.In this case, can increase and once ask probability of successful, improve the efficient that session is set up, and reduce the data traffic of interface between transport layer equipment and the operation layer equipment.
After this, when RACF handled resource request from service control function, according to setting in advance, whether decision was to NAAF inquiring user subscription data.
It is to be noted, among the present invention, in order to make transport layer equipment can be suitable for dissimilar operation layer equipment (looking into or do not look into user signing contract information), transport layer equipment can be according to preestablishing or whether the source decision of resource request looks into user's access CAMEL-Subscription-Information.Specifically, in other embodiments of the invention, RACF also can be when the resource request of handling from service control function, and according to the source of resource request, whether decision is to NAAF inquiring user subscription data.This is to consider that a RACF can be at a plurality of service control functions, and the novel service control function that uses in existing the foregoing description in these service control functions also has and uses in the prior art.Therefore, for under the situation that has the different business controlled function to mix, for both guaranteed efficiencies, guarantee success rate again, RACF distinguishes according to the address of service control function, to the resource request that the service control function in the foregoing description is initiated, then the RACF decision is not to NAAF inquiring user subscription data.For the service control function that uses in the prior art, then handle by mode of the prior art.
In according to a second embodiment of the present invention, determine the required resource of session by CPE, and send to service control function by expansion of application layer signaling or special application layer resource signaling.In this case, if in the step 404, service control function judges that the resource of current requirement does not meet the requirement of CAMEL-Subscription-Information, will be mutual with CPE, consult to determine adjustment to institute's requested resource, finish adjustment after, initiate resource request to RACF again by service control function again.In addition, second embodiment is identical with the processing of first embodiment, does not do at this and gives unnecessary details.
Though by with reference to some preferred embodiment of the present invention, the present invention is illustrated and describes, those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (7)
1. operation layer is characterized in that to the method for transport layer request resource in the next generation network, comprises following steps:
When session is set up, the signatory resource information of access of operation layer equipment elder generation inquiring user, and judge and currently want requested resource whether to meet to insert the requirement of signatory resource information, if do not meet then want after the requested resource to transport layer equipment initiation resource request according to inserting signatory resource information adjustment.
2. operation layer is characterized in that to the method for transport layer request resource in the next generation network according to claim 1, and described operation layer equipment can be business control function body or professional control and application subsystem.
3. operation layer is characterized in that to the method for transport layer request resource in the next generation network according to claim 2, and described transport layer equipment can be resource admission control function entity or resource admission control subsystem.
4. operation layer is to the method for transport layer request resource in the next generation network according to claim 3, it is characterized in that, when described operation layer equipment was business control function body, described business control function body was inquired about described user's the signatory resource information of access from the network insertion attached function.
5. operation layer is characterized in that to the method for transport layer request resource in the next generation network according to claim 4, also comprises following steps:
When described transport layer equipment is resource admission control function entity, described resource admission control function entity handles is during from the resource request of business control function body, according in advance setting decision whether to the signatory resource information of the access of network insertion attached function inquiring user.
6. operation layer is characterized in that to the method for transport layer request resource in the next generation network according to claim 4, also comprises following steps:
When described transport layer equipment is resource admission control function entity, described resource admission control function entity handles is during from the resource request of business control function body, according to the source decision of resource request whether to the signatory resource information of the access of network insertion attached function inquiring user.
7. operation layer is to the method for transport layer request resource in the next generation network according to claim 1, it is characterized in that described operation layer equipment also can comprise the substep of holding consultation with the customer premises equipment, CPE of initiating described session when wanting requested resource according to the signatory resource information adjustment of user's access.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510027692XA CN100442759C (en) | 2005-07-12 | 2005-07-12 | Method for business layer requesting resourcing to transmission layer in next generation network |
| PCT/CN2006/001651 WO2007006231A1 (en) | 2005-07-12 | 2006-07-12 | A method for the service stratum requesting resources from the transmission stratum in ngn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510027692XA CN100442759C (en) | 2005-07-12 | 2005-07-12 | Method for business layer requesting resourcing to transmission layer in next generation network |
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| CN1889506A CN1889506A (en) | 2007-01-03 |
| CN100442759C true CN100442759C (en) | 2008-12-10 |
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| CNB200510027692XA Expired - Fee Related CN100442759C (en) | 2005-07-12 | 2005-07-12 | Method for business layer requesting resourcing to transmission layer in next generation network |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101170497A (en) | 2007-11-20 | 2008-04-30 | 中兴通讯股份有限公司 | Method and device for sending network resource information data |
| CN101483660A (en) * | 2008-01-11 | 2009-07-15 | 中兴通讯股份有限公司 | Content delivery apparatus and system, content on demand method and network architecture |
| WO2015168834A1 (en) * | 2014-05-04 | 2015-11-12 | 华为技术有限公司 | Method for allocating network resources in virtual network function, composer and manager |
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| JPH10135979A (en) * | 1996-11-01 | 1998-05-22 | Chokosoku Network Computer Gijutsu Kenkyusho:Kk | Resource reservation system in atm end system |
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| WO2001031848A2 (en) * | 1999-10-27 | 2001-05-03 | Nortel Networks Limited | Managed network node including multiple managed resources |
| US20050124353A1 (en) * | 2002-05-23 | 2005-06-09 | Interdigital Technology Corporation | Signaling connection admission control in a wireless network |
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2005
- 2005-07-12 CN CNB200510027692XA patent/CN100442759C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10135979A (en) * | 1996-11-01 | 1998-05-22 | Chokosoku Network Computer Gijutsu Kenkyusho:Kk | Resource reservation system in atm end system |
| WO2001027644A1 (en) * | 1999-10-12 | 2001-04-19 | Mci Worldcom, Inc. | Customer resources policy control for ip traffic delivery |
| WO2001031848A2 (en) * | 1999-10-27 | 2001-05-03 | Nortel Networks Limited | Managed network node including multiple managed resources |
| US20050124353A1 (en) * | 2002-05-23 | 2005-06-09 | Interdigital Technology Corporation | Signaling connection admission control in a wireless network |
Non-Patent Citations (2)
| Title |
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| 下一代网络（NGN）的框架结构. 续合元.电信工程技术与标准化. 2005 |
| 下一代网络（NGN）的框架结构. 续合元.电信工程技术与标准化. 2005 * |
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