CN1866955A - Method and system for controlling IP multimedia subsystem service quality policy - Google Patents
Method and system for controlling IP multimedia subsystem service quality policy Download PDFInfo
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Abstract
The invention relates to a method for controlling the service quality strategy of IP multimedia subsystem, and relative system. Wherein, it is characterized in that: the strategy execute function PEF network unit, according to received user QoS resource information, sends relative information to the strategy decide function PDF network unit, and via executing the decided result of PDF network unit, controlling the user QoS resource. With said invention, the PDF function can be realized by independent PEF network unit, to support the IMS QoS strategy control function without upgrading the GGSN, in the UMTS grouped field core network that do not support 3GPP R5/R6.
Description
Technical field
The present invention relates to the communications field, relate in particular to the service quality control strategy of IP Multimedia System.
Background technology
IP-based multimedia service is becoming one of main business of communication network gradually, and in order to adapt to the development of mobile data services, 3GPP R5 standard is at UMTS (Universal MobileTelecommunications System; Universal Mobile Telecommunications System) increased IMS (IP Multimedia Subsystem in the core net; IP Multimedia System) territory, and in this territory, defined a series of functional entitys, be used for the process IP multimedia service and provide end-to-end QoS to guarantee.In the 3GPP R6 standard IMS territory is strengthened.
The implementation framework that qos policy control is carried out in the IMS territory of 3GPP definition comprises: UTRAN (UMTS Terrestrial Radio Access Network as shown in Figure 1; UMTS Terrestrial radio access network), PS Core Network (PS territory core private network), ExternalNetworks (outer net) and IMS Domain (IMS territory), wherein said IMS Domain comprises P-CSCF (Proxy-Call State Control Function; Agent conversation control function) network element, PDF (Policy Decision Function; Strategy decisive function) network element, S-CSCF (Serving-CSCF; Service-CSCF) and HSS (Home SubscriberServer; Home subscriber server).Described PS Core Network comprises GGSN (Gateway GPRS Support Node; Gateway GPRS Support Node).
Wherein P-CSCF and PDF can unify physically, also can separately provide.
The function of each network element is as follows:
1, P-CSCF network element: as Call Agent, provide the session processing capacity, it is UE first contact node in IMS.The effect of P-CSCF is just as an acting server, and request that it will be received and service are handled or transmitted.P-CSCF and GGSN are arranged in same network, can be arranged in local (home) network or visit (visited) network;
2, PDF network element: accept QoS authorization requests by Go interface, implement local policy (SBLP Service-Based LocalPolicy) controlled function, be used to control the foundation of IMS service bearer face based on business according to the configuration of operator from GGSN;
3, S-CSCF network element: be responsible for user's registration and professional control;
4, HSS network element: customer data base comprises user signing contract information;
5, GGSN network element: be used for implementation strategy and carry out function (Policy EnforcementFunction), when IMS loading end PDP Context is set up, send the QoS authorization requests to PDF, implement concrete QoS according to the appointment of PDF and guarantee by Go interface.
The prior art one relevant with the present invention, still based on as shown in Figure 1 framework:
At first pass through SIP (Session InitiationProtocol between user UE and the P-CSCF network element; Session initiation Protocol) signaling process carries out user profile registration and QoS negotiation, UE initiates the contextual activation process of IMS Media Stream based on the QoS of this negotiation then, the GGSN network element sends the QoS authorization request message by Go interface to the PDF network element in the contextual activation process of IMS Media Stream, the PDF network element carries out the QoS mandate according to operator's configured strategy and from the IMS medium stream information that the P-CSCF network element obtains, be handed down to the GGSN network element by Go interface, UE just can carry out the IMS business by this context after the Media Stream context was set up successfully.
In IMS Media Stream updating context flow process, if the QoS of UE changes and exceeds outside the QoS scope that PDF authorized, then the GGSN network element is initiated the QoS authorized application to the PDF network element again by Go interface.
In IMS Media Stream context deexcitation (deactivate) flow process, the GGSN network element is removed user profile by Go interface notice PDF network element; The PDF network element also can notify the GGSN network element to initiate contextual deletion flow process by Go interface.
With the contextual activation of IMS Media Stream is example, and its flow process comprises as shown in Figure 2:
UE is with SDP (the Session DescriptionProtocol that consults in the SIP signaling process to obtain; Session Description Protocol) parameter maps is the UMTS qos parameter, and it is encapsulated in PDP (Packet Data Protocol; Packet data protocol), for example in the IP protocol context activation request message;
UE initiates the request of secondary context activation to the SGSN network element, carries binding information in the message, comprises this contextual authorization token and IP traffic identifier;
Step 3, SGSN network element send the context activation request message to GGSN.
Step 4, GGSN network element send COPS (Common Open PolicyService protocol to the PDF network element; The Common Open Policy Service agreement) request message (COPS REQ).
The GGSN network element is received the context request message that has binding information, finds the PDF address according to the sign of the PDF in the binding information, and authorization token and IP traffic identifier are encapsulated in the COPS authorization request message (REQ), initiates resource request message to the PDF network element;
The PDF network element utilizes binding information to identify other Multimedia session, carries out authorization decision according to session that obtains from the P-CSCF network element and media information.
Step 6, PDF network element are responded COPS decision information (COPSDEC) to the GGSN network element.
PDF responds COPS decision-making (DEC) message to GGSN, comprises IP QoS information, Gate state, ICID (IM CN Subsystem Charging Identifier in the message; ) etc. information.
After the GGSN network element is received the COPS decision information, IP QoS is mapped as the UMTSQoS of mandate, carries out QoS based on the UMTS QoS of this mandate then and consult.
The GGSN network element runs succeeded to PDF network element report COPS decision-making and still fails, and also comprises GCID (GPRS Charging ID in the message; GPRS Charging ID) and the GGSN address, be used for charge associated.
If the QoS of UE request is not in the QoS scope of PDF network element mandate, then the GGSN network element is demoted to it; If activate failure, then relevant with Go interface error code is by PCO (ProtocolConfiguration Options; Protocol configuration option) passes to UE.
Step 10, SGSN network element are responded the context activation response to UE.
By the technical scheme of prior art as can be seen, there is following defective in it:
For the support to the IMS business is provided, in the prior art, require the GGSN network element that PEF is provided (Policy Enforcement Function; Policy enforcement function), this is no problem for New-deployed Network, but for original R98/R99/R4 network, then require operator with the GGSN network element updating in the existing network to 3GPP R5 version, this certainly will cause certain impact to existing network, has increased the difficulty of IMS service deployment.
Summary of the invention
The purpose of this invention is to provide a kind of method and system of controlling the IP Multimedia System quality of service policy, by the present invention, the PEF function can be realized by the independent PEF equipment that is provided with, thereby in not supporting the UMTS packet domain core network of 3GPP R5/R6, can under the situation of the GGSN that do not upgrade, support IMS qos policy controlled function, for operator provides a kind of reduction procedure of the IMS of deployment business, and can reduce the difficulty of IMS service deployment.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of system that controls the IP Multimedia System quality of service policy, comprise strategy decisive function PDF network element and policy enforcement function PEF network element, described PEF network element is according to the service quality QoS resource information of the respective user that receives, send corresponding information to the PDF network element, and described user's QoS resource is controlled according to the result of decision that the PDF network element is made.
Wherein said system also comprises:
Gateway general packet service support node GGSN; Be used to send the QoS resource information of respective user to described PEF network element.
The invention provides a kind of method of controlling the IP Multimedia System quality of service policy, it comprises:
A, PEF network element send corresponding information to the PDF network element according to the QoS resource information of the respective user that receives, and by the result of decision that execution PDF network element is made described user's QoS resource are controlled.
Wherein, described steps A specifically comprises:
A1, GGSN dial in the authentication service charging message by the long-distance user QoS resource information of respective user are sent to the PEF network element;
A2, PEF network element receive described user's QoS resource information, and send corresponding information to the PDF network element according to it, and by the result of decision that execution PDF network element is made according to the information that receives described user's QoS resource are controlled.
Wherein, before steps A, comprise:
With the address configuration of the AAA accounting server of GGSN is the address of PEF network element.
Wherein, described steps A 1 specifically comprises:
A11, in user's pdp context activation, GGSN begins Accounting-Request START message with the charging request of user's correspondence and issues the PEF network element, carries described user's QoS resource information in the described message;
Or,
A12, in user's PDP Context renewal process, GGSN upgrades Accounting Request Interim-Update message with the charging request of user's correspondence and issues the PEF network element, carries described user's QoS resource information in the described message;
Or,
A13, in user's PDP context deactivation process, GGSN stops Accounting Request STOP message with the charging request of user's correspondence and issues the PEF network element, carries described user's QoS resource information in the described message.
Wherein, in the pdp context activation the user, described steps A 2 specifically comprises:
A21, described PEF network element receive described message, obtain the corresponding described user QoS resource information of carrying in the described message;
A22, initiate the QoS authorization requests to the PDF network element, and carry out the QoS mapping and handle through consultation, and respond response message to GGSN according to result according to the response results of described PDF network element according to the described user QoS resource information that gets access to.
Wherein, when in user's PDP Context renewal process, described steps A 2 specifically comprises:
A23, described PEF network element receive described message, obtain the corresponding described user QoS resource information of carrying in the described message;
A24, described PEF network element are according to the user QoS resource information that gets access to, check whether described QoS resource exceeds the QoS resource of originally having authorized, if exceed, then initiate the QoS authorization requests to the PDF network element again, respond the corresponding response AccountingResponse message of chargeing to GGSN then; If do not exceed, then directly respond corresponding AccountingResponse message to GGSN.
Wherein, when in user's PDP context deactivation process, described steps A 2 specifically comprises:
A25, described PEF network element receive described message, obtain the corresponding described user QoS resource information of carrying in the described message;
A26, send the described user QoS resource information that obtains to the PDF network element, and notice PDF network element cancels described user's relevant QoS resource, and respond corresponding Accounting Response message to GGSN.
As seen from the above technical solution provided by the invention, policy enforcement function PEF network element sends corresponding information to strategy decisive function PDF network element according to the QoS resource information of the respective user that receives among the present invention, and by the result of decision that execution PDF network element is made described user's QoS resource is controlled.By the present invention, the PEF function can be realized by the independent PEF equipment that is provided with, thereby in not supporting the UMTS packet domain core network of 3GPP R5/R6, can under the situation of the GGSN that do not upgrade, support IMS qos policy controlled function, for operator provides a kind of reduction procedure of the IMS of deployment business, and can reduce the difficulty of IMS service deployment.
Description of drawings
The implementation framework figure that Fig. 1 carries out qos policy control for the IMS territory of 3GPP definition;
Fig. 2 is the flow chart of IMS Media Stream context activation in the background technology;
Fig. 3 is a system principle schematic diagram provided by the invention;
Fig. 4 is the flow chart at user's pdp context activation provided by the invention;
Fig. 5 is the flow chart in user's PDP Context renewal process provided by the invention;
Fig. 6 is the flow chart in user's PDP context deactivation process provided by the invention.
Embodiment
The invention provides a kind of method and system of controlling the IP Multimedia System quality of service policy, its core is: policy enforcement function PEF network element sends corresponding information to strategy decisive function PDF network element according to the service quality QoS resource information of the respective user that receives, and by the result of decision that execution PDF network element is made according to the information that receives described user's QoS resource is controlled.
At system of the present invention, the invention provides first embodiment, as shown in Figure 3, as can be seen from the figure, the present invention includes existing network and the independent PEF equipment that is provided with PEF function.Described PEF equipment links to each other with PDF network element among the existing network IMS Domain (IMS territory) by Go interface, link to each other with IMS AS among the existing network IMS Domain (IMS territory) by G interface, link to each other with GGSN node among the existing network PS Core Network by the Gi interface, and link to each other by the PDN network element of the External Networks in G interface and the existing network.
The present invention becomes the PEF address with AAA Accounting Server (AAA accounting server) address configuration of the GGSN in the existing network, just can transmit QoS information by RADIUS Accounting message between GGSN node and the PEF network element like this.User's message is routed to the PEF network element, and described PEF network element just can be born the loading end function, and purpose is can effectively realize transmitting control according to the qos policy that the PDF network element issues in PEF network element side.
By above-mentioned setting, the RADIUS Accounting of the respective user that GGSN sends (long-distance user dials in authentication service and charges) message is given the PEF network element; Described PEF network element receives described message, get access to described user's QoS resource information then according to described message, send corresponding information to the PDF network element according to the described QoS resource information that gets access to then, described PDF network element is made a strategic decision accordingly according to the information that receives, and the result of decision sent to the PEF network element, described PEF network element is controlled described user's QoS resource according to the described result of decision.
Can also realize that by the PEF network element PDN (Packet Data Network) in GGSN and the External Networks outer net carries out alternately.
The function of other network element, and the same prior art of mutual information interactive process are not described in detail.
Based on system provided by the present invention, method of the present invention has been proposed, it is embodied in user's PDP context activation flow process, user's PDP Context respectively more in new technological process and the user's PDP context deactivation flow process, and specific implementation process is as follows:
At first, the address configuration with the AAA Accounting Server of GGSN is the address of PEF network element.
Then, GGSN sends the RADIUS Accounting message of respective user to the PEF network element; Described PEF network element receives described message, and according to the corresponding described user QoS resource information of carrying in the described message, send corresponding information to the PDF network element, described PDF network element is made a strategic decision accordingly according to the information that receives, and the result of decision sent to the PEF network element, described PEF network element is controlled described user's QoS resource according to the described result of decision.Be described in detail as follows:
As shown in Figure 4, in user's PDP context activation flow process, specifically comprise:
As shown in Figure 5, in user's PDP Context renewal process, specifically comprise:
As shown in Figure 6, in user's PDP context deactivation process, specifically comprise:
By the specific embodiments of the invention described above as can be seen, main thought of the present invention is: the PEF function is realized by the independent PEF equipment that is provided with, and reuse GGSN existing interface and function dexterously, chain of command message between GGSN and the PEF is reused the RADIUSAccounting message of GGSN, and by mutual with the PDF network element, IMS qos policy controlled function is provided, thereby, thoroughly solve the upgrade problem of GGSN in the R98/R99/R4 network for operator provides a kind of reduction procedure of the IMS of deployment business.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (9)
1, a kind of system that controls the IP Multimedia System quality of service policy comprises strategy decisive function PDF network element, it is characterized in that, also comprises:
Policy enforcement function PEF network element is used for the service quality QoS resource information according to the respective user that receives, and sends corresponding information to the PDF network element, and according to the result of decision that the PDF network element is made described user's QoS resource is controlled.
2, system according to claim 1 is characterized in that, also comprises:
Gateway general packet service support node GGSN is used to send the QoS resource information of respective user to described PEF network element.
3, a kind of method of controlling the IP Multimedia System quality of service policy is characterized in that, comprising:
A, PEF network element send corresponding information to the PDF network element according to the QoS resource information of the respective user that receives, and by the result of decision that execution PDF network element is made described user's QoS resource are controlled.
4, method according to claim 3 is characterized in that, described steps A specifically comprises:
A1, GGSN dial in the authentication service charging message by the long-distance user QoS resource information of respective user are sent to the PEF network element;
A2, PEF network element receive described user's QoS resource information, and send corresponding information to the PDF network element according to it, and by the result of decision that execution PDF network element is made according to the information that receives described user's QoS resource are controlled.
5, method according to claim 3 is characterized in that, comprises before steps A:
With the address configuration of the AAA accounting server of GGSN is the address of PEF network element.
6,, it is characterized in that described steps A 1 specifically comprises according to claim 4 or 5 described methods:
A11, in user's pdp context activation, GGSN begins Accounting-Request START message with the charging request of user's correspondence and issues the PEF network element, carries described user's QoS resource information in the described message; Or,
A12, in user's PDP Context renewal process, GGSN upgrades Accounting Request Interim-Update message with the charging request of user's correspondence and issues the PEF network element, carries described user's QoS resource information in the described message; Or,
A13, in user's PDP context deactivation process, GGSN stops Accounting Request STOP message with the charging request of user's correspondence and issues the PEF network element, carries described user's QoS resource information in the described message.
7, method according to claim 4 is characterized in that, in the pdp context activation the user, described steps A 2 specifically comprises:
A21, described PEF network element receive described message, obtain the corresponding described user QoS resource information of carrying in the described message;
A22, initiate the QoS authorization requests to the PDF network element, and carry out the QoS mapping and handle through consultation, and respond response message to GGSN according to result according to the response results of described PDF network element according to the described user QoS resource information that gets access to.
8, method according to claim 4 is characterized in that, when in user's PDP Context renewal process, described steps A 2 specifically comprises:
A23, described PEF network element receive described message, obtain the corresponding described user QoS resource information of carrying in the described message;
A24, described PEF network element are according to the user QoS resource information that gets access to, check whether described QoS resource exceeds the QoS resource of originally having authorized, if exceed, then initiate the QoS authorization requests to the PDF network element again, respond the corresponding response AccountingResponse message of chargeing to GGSN then; If do not exceed, then directly respond corresponding AccountingResponse message to GGSN.
9, method according to claim 4 is characterized in that, when in user's PDP context deactivation process, described steps A 2 specifically comprises:
A25, described PEF network element receive described message, obtain the corresponding described user QoS resource information of carrying in the described message;
A26, send the described user QoS resource information that obtains to the PDF network element, and notice PDF network element cancels described user's relevant QoS resource, and respond corresponding Accounting Response message to GGSN.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008083558A1 (en) * | 2007-01-09 | 2008-07-17 | Huawei Technologies Co., Ltd. | METHOD, DEVICE AND SYSTEM FOR IMPLEMENTING FLOW GROUP QoS CONTROL IN NGN NETWORK |
| WO2009024050A1 (en) * | 2007-08-15 | 2009-02-26 | Huawei Technologies Co., Ltd. | Method, system and device for policy control |
| CN101552723B (en) * | 2008-04-03 | 2011-11-16 | 电信科学技术研究院 | Method, system and device for obtaining IP address of ANDSF entity |
| CN101690090B (en) * | 2007-04-30 | 2013-03-13 | 诺基亚西门子通信公司 | Policy control in a network |
| CN112020096A (en) * | 2019-05-31 | 2020-12-01 | 大唐移动通信设备有限公司 | Voice service processing system, method and device of 5G network |
-
2005
- 2005-11-29 CN CN200510124254A patent/CN100583885C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008083558A1 (en) * | 2007-01-09 | 2008-07-17 | Huawei Technologies Co., Ltd. | METHOD, DEVICE AND SYSTEM FOR IMPLEMENTING FLOW GROUP QoS CONTROL IN NGN NETWORK |
| CN101690090B (en) * | 2007-04-30 | 2013-03-13 | 诺基亚西门子通信公司 | Policy control in a network |
| WO2009024050A1 (en) * | 2007-08-15 | 2009-02-26 | Huawei Technologies Co., Ltd. | Method, system and device for policy control |
| CN101370263B (en) * | 2007-08-15 | 2012-06-06 | 华为技术有限公司 | Policy control method and system |
| CN101552723B (en) * | 2008-04-03 | 2011-11-16 | 电信科学技术研究院 | Method, system and device for obtaining IP address of ANDSF entity |
| CN112020096A (en) * | 2019-05-31 | 2020-12-01 | 大唐移动通信设备有限公司 | Voice service processing system, method and device of 5G network |
| CN112020096B (en) * | 2019-05-31 | 2022-04-15 | 大唐移动通信设备有限公司 | Voice service processing system, method and device of 5G network |
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| CN100583885C (en) | 2010-01-20 |
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