CN101394291A - Method, device and system for processing service - Google Patents
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Abstract
The invention discloses a method, a device and a system for service processing, which enables an AF to process specific services according to the conditions of the network resources of a user. The method comprises the following steps: the AF acquires the information of the conditions of the current network resources of the user from a PCRF; and the AF processes the services for the user according to the information. The device comprises an acquiring unit used for acquiring the information of the conditions of the current network resources from the entity PCRF, and a processing unit used for processing the services for the user according to the information of the conditions of the current network resources acquired by the acquiring unit. The system comprises the AF used for acquiring the information of the conditions of the current network resources of the user and processing the services for the user according to the information of the conditions of the current network resources, and the PCRF used for providing the information of the conditions of the current network resources for the AF.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for processing a service.
Background
The 3GPP 23.203 describes an Application Function (AF): the AF is a functional entity, and is used to provide application information on an IP-CAN (IP Connectivity Access Network) user plane behavior required for dynamic policy or charging control. In order to make policy decision for the service by PCRF (policy control and Charging Rules Function entity), AF interacts with PCRF, and may transmit dynamic session information to PCRF, or may receive IP-CAN information and IP-CAN bearer layer event information through PCRF. A P-CSCF (proxy CSCF) in an IMS network, various application servers in a non-IMS network may be used as the AF.
To enhance the understanding of the AF function, PCC (Policy Control and Charging) architecture and several terms related to the AF definition are set forth herein:
the PCC architecture is shown in fig. 1, where the functions of each entity are described as follows:
AF: and applying the functional entity. Application layer session information is mainly dynamically provided for policy and charging control of PCRF, for example: the P-CSCF in IMS belongs to the AF.
PCRF: and the policy control and charging rule function entity. And according to the limitation of the user access network, the current ongoing application service information of the user, the local operator configuration and the user subscription information, making a corresponding strategy, and providing the strategy for the PCEF to execute. The strategy comprises the following steps: traffic data flow detection, QoS control, gating, flow-based charging, etc.
Pcef (policy and Charging implementation function): and the policy and charging execution function entity. And executing a policy issued or designated by the PCRF, namely finishing the functions of detecting the service data flow, ensuring the QoS (quality of service) and gating of the service data flow, finishing online/offline charging, triggering a session with a control plane and the like. For example: GGSN entity in GPRS.
The functions of each interface are described as follows:
rx: the reference point is used for AF to issue application layer session related information, including IP filter for identifying service data flow, bandwidth information needed by service flow, and the interface uses IETF defined Diameter protocol.
Gx: the reference point is used for the PCRF to dynamically control the PCC rules executed by the PCEF. The utility model has the following functions: establishing, maintaining and terminating an IP-CAN session; the PCEF requests PCC rules from the PCRF; the PCRF provides the PCC rules to the PCEF; negotiating an IP-CAN bearer establishment mode, etc. The reference point uses the IETF defined Diameter protocol.
The remaining entities (SPR (Subscription Profile Repository), OCS (Online Charging System), OFCS (Offline Charging System)) and interfaces (Sp, Gy, Gz) are not related to the content of the present invention, and are not described herein again.
Several terms:
IP-CAN: an IP Connectivity Access Network, which CAN still maintain IP service continuity (i.e. without interrupting service) when a user roams (changes location) in an Access Network, is called an IP-CAN, such as a GPRS Network, an I-WLAN Network, etc.;
IP-CAN bearer: IP-CAN bears, IP transmission path (the path refers to the path from access network to GW) with definite speed, delay and bit error rate, for GPRS, IP-CAN bearer corresponds to PDP context;
IP-CAN session: an IP-CAN session refers to a connection between a UE and a PDN (packet data network, such as the internet) identity, which is identified by the IP address of the UE and the identity of the UE. An IP-CAN exists as long as the UE is assigned an IP address and CAN be identified by the IP network. An IP-CAN session may contain one to more IP-CAN bearers.
In the above, the existing capability of the AF is described, however, the inventor finds that in some application scenarios, when a service is developed on a network, the AF also needs to have a capability of processing the service of a user according to the current network resource status of the user. But currently this requirement cannot be met.
For example: for the video on demand service, different coding and decoding formats can be adopted for video transmission, so that different requirements are required for transmission bandwidth, and the service experience of users is greatly different. When a user carries out a video-on-demand service, and an on-demand terminal sends a plurality of supported encoding and decoding modes to an on-demand server AF, the on-demand server AF lacks the current network resource status information of the user and cannot select a reasonable encoding and decoding format for the current on-demand user, so that reasonable network resources cannot be applied for the video-on-demand service, that is, the effects of ensuring the user experience as much as possible and reasonably utilizing the current network resources cannot be achieved.
The following steps are repeated: for the network game service, in order to meet the requirement of the user on the game service experience, the network game server AF needs to provide the game service for the user within a certain bandwidth resource range. If the current network available bandwidth resources of the user are not enough for the network game server AF to provide services for the user, the service request of the user needs to be rejected. However, at present, the network game server AF cannot acquire the information of the current available bearer bandwidth resource of the user, so that when receiving the game service request, it cannot determine whether to accept or reject the game service request, and cannot determine an appropriate bandwidth for providing the game service under the condition of acceptance, so as to ensure the effect of game development.
In summary, in some application scenarios, there is a need for the AF to process the service, and the AF needs to specifically process the service according to the current network resource status of the user, but cannot be implemented based on the prior art.
Disclosure of Invention
Embodiments of the present invention provide a method, an apparatus, and a system for processing a service, so that an AF can perform specific processing on the service according to a current network resource status of a user.
The method for processing the service of the embodiment of the invention comprises the following steps: an application function entity AF acquires the current network resource condition information of a user from a policy control and charging rule function entity PCRF; and the AF processes the service of the user according to the network resource condition information.
An application function entity according to an embodiment of the present invention includes: the acquiring unit is used for acquiring the current network resource condition information of the user from a policy control and charging rule function (PCRF) entity; and the processing unit is used for processing the service of the user according to the network resource status information acquired by the acquisition unit.
The system for processing service of the embodiment of the invention comprises: an application function entity AF, which is used for acquiring the current network resource status information of a user and processing the service of the user according to the network resource status information; and the policy control and charging rule function entity PCRF is used for providing the current network resource condition information of the user for the AF.
In the embodiment of the invention, AF acquires the current network resource condition information of a user from PCRF; and then the AF can carry out specific processing on the service of the user according to the network resource condition information. The service can be flexibly developed according to the current network resource condition of the user, and the effects of fully utilizing the network resource and ensuring the service experience of the user are achieved.
Drawings
FIG. 1 is a prior art PCC architecture diagram;
fig. 2 is a flowchart of a method for processing a service according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an application functional entity according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another application functional entity according to an embodiment of the present invention;
FIG. 5 is a flowchart of a first embodiment of the present invention;
fig. 6 is a flowchart of a second embodiment of the present invention.
Detailed Description
The inventor finds in the invention process that, as can be seen from the existing AF capability and the PCC architecture related to the AF, the AF of the application layer may implement interaction with a PCEF (Policy and charging Enforcement Function) of the bearer layer through the PCRF. The AF can provide application layer service related information to the PCRF as a basis for the PCRF to formulate a control bearer policy, and can acquire bearer event information through the PCRF, so that it can be considered that the AF acquires current network resource condition information of a user through the PCRF.
Based on the above thought, in order to enable the AF to flexibly process the service according to the current network resource status of the user, so as to achieve the effects of not only fully utilizing the network resource, but also ensuring the user service experience, an embodiment of the present invention provides a method for processing the service, which, as shown in fig. 2, includes the following main steps:
s1, AF obtains the current network resource status information of user from PCRF.
And S2, the AF processes the service of the user according to the network resource status information.
Wherein S1 includes the following details:
the current network resource status information of the user represents the current available bearing resource status information under the specified user IP-CAN Session, and comprises a QoS level, the current available bandwidth of the bearing network and the like. The AF can obtain the current network resource condition information of the user by sending a query request (not limited to the query request, but also a subscription request, or other request messages for obtaining the network resource condition information) to the PCRF by the AF, and the PCRF replies to the AF according to the query request.
Further, an implementation example of obtaining the current network resource condition information of the user by the AF in a manner of sending the query request to the PCRF is as follows:
firstly, the AF sends a query request message to the PCRF so as to query the current network resource condition information under the IP-CAN Session of a specified user;
taking the example that the Diameter AAR message sent from AF to PCRF carries the network resource status query information:
<AA-Request>∷＝<Diameter Header：265，REQ，PXY>
......
[AF-Application-Identifier]
[Framed-IP-Address]
[Available-QoS-Query]
......
the AF carries Available-QoS-QueryAVP in the Diameter AAR message sent to PCRF. The Available-QoS-Query AVP is of octetString type, and represents that the AF inquires the PCRF about the current network resource condition under the specified user IP-CAN Session.
And the PCRF returns the current network resource condition information under the user IP-CAN Session to the AF.
Taking an example that the PCRF sends the current network resource condition information of the user to the AF by sending a Diameter RAR message:
<RA-Request>∷＝<Diameter Header：258，REQ，PXY>
......
*[Subscription-ID]
[Available-QoS]
......
and after receiving the query request sent by the AF, the PCRF returns the current network resource condition information under the user IP-CAN Session to the AF through a Diameter RAR message. The current network resource status information, of the group type, is represented in this example in the form of an Available-QoS AVP.
Available-QoS∷＝<AVP Header：×××>
*[QoS-Label]
[Available-Bandwidth]
The QoS-Label AVP is an Enumerated type, which indicates that the current bearing network CAN provide QoS grade information for the IP packet transmission of the user to develop service, the information is related to the transmission delay time of the transmission IP packet, the transmission packet loss rate under the uncongested condition and other information, and a plurality of QoS-labels CAN exist under the user IP-CAN Session.
The Available-Bandwidth AVP indicates the Bandwidth information Available to the current network under the IP-CAN Session of the user, and the group type contains the following information:
Available-Bandwidth∷＝<AVP Header：×××>
[Guaranteed-Bit-Rate-UL]
[Guaranteed-Bit-Rate-DL]
[Maximum-B it-Rate-UL]
[Maximum-Bit-Rate-DL]
[Aggregate-Maximum-Bit-Rate-UL]
[Aggregate-Maximum-Bit-Rate-DL]
wherein the guarded-Bit-Rate-UL AVP is of unidimensioned 32 type, and indicates that the network under the IP-CANSession of the user can use the Guaranteed uplink bandwidth;
the guarded-Bit-Rate-DL AVP is of an unidentified 32 type, and indicates that the network under the user IP-CAN Session CAN guarantee the downstream bandwidth;
the Maximum-Bit-Rate-UL AVP is of an unknown 32 type and is used together with a guarded-Bit-Rate-UL AVP to represent the Maximum available uplink bandwidth of the GBR service under the IP-CAN Session of the user, and the value of the Maximum-Bit-Rate-UL AVP is more than or equal to that of the guarded-Bit-Rate-UL AVP;
the Maximum-Bit-Rate-DL AVP is of an unknown 32 type, is used together with a guarded-Bit-Rate-DLAVP to represent the Maximum available downlink bandwidth of the GBR service under the IP-CAN Session of the user, and has a value greater than or equal to that of a guarded-Bit-Rate-DL AVP;
the Aggregate-Maximum-Bit-Rate-UL AVP is of an unknown 32 type and represents all available uplink bandwidths of the network under the IP-CAN Session of the user;
the Aggregate-Maximum-Bit-Rate-DL AVP is of an unknown 32 type, and represents all available downlink bandwidths of the network under the IP-CAN Session of the user.
Wherein S2 includes the following details:
and the AF carries out specific processing on the service developed by the user according to the current network resource condition information under the IP-CAN Session of the specified user acquired from the PCRF and the service information of other application layers. The method specifically comprises the following steps: the AF judges whether the service to be developed by the user CAN be satisfied according to the current network resource status information under the user IP-CAN Session, and if so, determines the network resource (such as the codec format selected for the user to develop the service, the media type supporting transmission, the required bandwidth, etc.) for the service, otherwise, rejects the service.
An embodiment of the present invention further provides an application function entity, as shown in fig. 3, which includes: an acquisition unit and a processing unit.
The acquiring unit is used for acquiring the current network resource condition information of the user from a policy control and charging rule function (PCRF) entity; wherein the obtained network resource status information includes: quality of service QoS class and/or bandwidth currently available to the bearer network, etc.
And the processing unit is used for processing the service of the user according to the network resource status information acquired by the acquisition unit. The method specifically comprises the following steps: the processing unit judges whether the service to be developed by the user can be satisfied according to the network resource condition information, if so, the processing unit determines the network resource for the service, otherwise, the processing unit rejects the service.
Further, referring to fig. 4, the obtaining unit of the application function entity may include: a request sending subunit and a first receiving subunit.
A request sending subunit, configured to send a request message for acquiring network resource status information to the PCRF;
and the first receiving subunit is used for receiving the network resource condition information returned by the PCRF.
An embodiment of the present invention further provides a system for processing a service, including: AF and PCRF.
And the AF is used for acquiring the current network resource condition information of the user and processing the service of the user according to the network resource condition information. Wherein the obtained network resource status information includes: quality of service QoS class and/or current bearer network available bandwidth, etc.; the treatment specifically comprises the following steps: and judging whether the service to be developed by the user can be met or not according to the network resource condition information, if so, determining the network resource for the service, and otherwise, rejecting the service.
And the PCRF is used for providing the current network resource condition information of the user for the AF. The provided method comprises the following steps: and the PCRF reports to the AF, or replies to the AF according to the query request sent by the AF.
The following is further detailed by two examples.
The first embodiment is as follows: video on demand service
Video on demand is a data application service widely developed on an IP network, and the service is processed by combining the current network resource status with an on demand server (data application AF). The user terminal sends a request to the request server AF, and sends all coding and decoding formats supporting video transmission to the request server AF; the on-demand server AF needs to obtain the status information of available network resources under the current user IP-CAN Session, and accordingly determines a proper bandwidth for the on-demand service developed by the user and selects a coding and decoding mode adopted by video transmission, so that the loading resources CAN be applied for the on-demand service.
The process of this embodiment, as shown in fig. 5, includes the following steps:
1. a user terminal sends a video on demand request to an on demand server AF, wherein the request comprises a video coding and decoding mode supported by an on demand terminal;
2. after receiving the request from the user terminal, the request server AF sends out a DiarameterAAR message to PCRF:
<AA-Request>∷＝<Diameter Header：265，REQ，PXY>
<Session-Id>
{Auth-Application-Id}
[AF-Application-Identifier]
[Available-QoS-Query]
[Framed-IP-Address]
......
......
the system carries an Available-QoS-Query AVP, and indicates that an on-demand server AF inquires the current Available network resource condition information under the specified user IP-CAN Session to a PCRF;
3. after receiving the query request from the on-demand server AF, the PCRF sends a Diameter RAR message to the on-demand server AF:
<RA-Request>::＝<Diameter Header：258，REQ，PXY>
<Session-Id>
{Auth-Application-Id}
[Available-QoS]
......
wherein, the Available-QoS AVP contained in the Diameter RAR message represents the current network resource condition information under the IP-CANSession of the appointed user, including QoS grade, Available bandwidth information and the like;
4. and (3) combining the current network resource condition information under the user IP-CAN Session returned by the PCRF and the coding and decoding modes supported by the user terminal in the step (1), the on-demand server AF determines a proper bandwidth and coding and decoding format for the on-demand service developed by the user.
5. The request server AF applies for the request service for bearing resources through the Diameter RAA message;
6. the PCRF returns a Diameter AAA message to the on-demand server AF;
7. the user develops a video-on-demand service.
Example two: network game service
Network games are a common and widely used data application service on the network. Since the game is competitive, if the transmission of the operation data of the user is delayed or lost, the game action of the user is slower than that of the hand, and the game is defeated. Therefore, in order to ensure the game experience of the user, the game server needs to provide the game service for the user within a certain bandwidth range.
The process of this embodiment, as shown in fig. 6, includes the following steps:
1. the user terminal sends a game starting request to the game server AF;
2. after receiving the game request, the game server AF sends a Diameter AAR request to the PCRF:
<AA-Request>::＝<Diameter Header：265，REQ，PXY>
<Session-Id>
{Auth-Application-Id}
......
[AF-Application-Identifier]
[Available-QoS-Query]
[Framed-IP-Address]
the network resource state information carrying the Available-QoS-Query AVP indicates that the game server AF inquires the current Available network resource state information under the specified user IP-CAN Session to the PCRF;
3. after receiving the query request, the PCRF returns a Diameter AAA message to the game server AF:
<AA-Answer>::＝<Diameter Header：265，PXY>
<Session-Id>
{Auth-Application-Id}
......
[Available-QoS]
......
wherein, the Available-QoS AVP contained in the DiarameterAAA message represents the status information of the currently Available network resources, including QoS grade, Available bandwidth information, etc.;
4. the game server AF senses that the current available network bandwidth information returned by the PCRF is not in the bandwidth range required by the game server AF for providing the game service to the user, returns a response to the user terminal, and rejects the game service request of the user.
In summary, in the embodiment of the present invention, the AF obtains the current network resource status information of the user from the PCRF; and then the AF can carry out specific processing on the service of the user according to the network resource condition information. The service can be flexibly developed according to the current network resource condition of the user, and the effects of fully utilizing the network resource and ensuring the service experience of the user are achieved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A method of processing traffic, comprising the steps of:
an application function entity AF acquires the current network resource condition information of a user from a policy control and charging rule function entity PCRF;
and the AF processes the service of the user according to the network resource condition information.
2. The method of claim 1, wherein the manner in which the AF obtains the network resource status information is: and the AF sends a request message for acquiring the network resource condition information to the PCRF, and the PCRF returns the network resource condition information according to the request message.
3. The method of claim 1, wherein the network resource status information obtained comprises: quality of service QoS class and/or bandwidth currently available to the bearer network.
4. The method of claim 1, wherein the processing the service of the user comprises: determining network resources for the user's traffic; or,
and if the current network resource condition of the user is not enough to provide the service to be developed by the user, rejecting the service.
5. An application function entity, comprising:
the acquiring unit is used for acquiring the current network resource condition information of the user from a policy control and charging rule function (PCRF) entity;
and the processing unit is used for processing the service of the user according to the network resource status information acquired by the acquisition unit.
6. The entity of claim 5, wherein the obtaining unit comprises:
a request sending subunit, configured to send a request message for acquiring network resource status information to the PCRF;
and the first receiving subunit is used for receiving the network resource condition information returned by the PCRF.
7. The entity according to claim 5 or 6, wherein the network resource status information comprises: quality of service QoS class and/or bandwidth currently available to the bearer network.
8. A system for processing traffic, comprising:
an application function entity AF, which is used for acquiring the current network resource status information of a user and processing the service of the user according to the network resource status information;
and the policy control and charging rule function entity PCRF is used for providing the current network resource condition information of the user for the AF.
9. The system of claim 8, wherein the network resource status information comprises: quality of service QoS class and/or bandwidth currently available to the bearer network.
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| WO2015143674A1 (en) * | 2014-03-27 | 2015-10-01 | 华为技术有限公司 | Video transmission method, apparatus and system |
| CN105144730A (en) * | 2014-03-27 | 2015-12-09 | 华为技术有限公司 | Video transmission method, apparatus and system |
| CN105144730B (en) * | 2014-03-27 | 2018-07-03 | 华为技术有限公司 | Video transmission method, device and system |
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