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Policy and charging rules function (PCRF) determination method, device and system

A technology for determining methods and devices, which is applied in the field of communication, and can solve the problems of being unable to provide UEIPaddress to DRA, difficult to select PCRF, and unable to obtain UEIPaddress by AF/TDF

Active Publication Date: 2013-11-27
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The inventors of the present invention found that when the traffic of the UE is directly offloaded to the Internet through the BBF network, the UE uses the UE local IP address allocated by the BNG to communicate with the peer AF / TDF, so the AF / TDF cannot know the UE's IP address. UE IP address, therefore, it is impossible to provide UE IP address to DRA, and it is difficult for DRA to select the correct PCRF without UE IP address

Method used

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  • Policy and charging rules function (PCRF) determination method, device and system
  • Policy and charging rules function (PCRF) determination method, device and system
  • Policy and charging rules function (PCRF) determination method, device and system

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Since the UE address information corresponding to the PCRF address in the DRA is the UE IP address, the PCRF can be determined by using the UE IP address.

[0062] Specifically, when the PGW requests the DRA to select the PCRF, it sends an IP-CAN session establishment request to the DRA. The session establishment request includes UE NAI, UE IP address and APN. After the DRA selects the PCRF, the UE NAI, UE address information, and APN are established. and the corresponding relationship between the selected PCRF address and save it.

[0063] Among them, the UE address information is UE IP address, and the established corresponding relationship is usually the corresponding relationship between UE NAI and APN and PCRF address, the corresponding relationship between UE IP address and APN and PCRF address, and the UE NAI, UE IP address and APN and PCRF address Address correspondence.

[0064] Since the UE needs to perform traffic offloading, the UE needs to establish commun...

Embodiment 2

[0081] When the unloading traffic message is not modified, since AF / TDF can only obtain the UE local IP address and only send the UE local IP address to DRA, DRA cannot use this address to search based on the stored correspondence information, so it cannot select the correct one. PCRF.

[0082] The method provided in this embodiment is applicable to the situation where the AF / TDF does not need the UE IP address when addressing the Diameter domain, and the AF / TDF cannot obtain the UE NAI.

[0083] At this time, the DRA needs to receive the session establishment request message sent by the PGW, obtain the UE local IP address included in the session establishment request message, and establish the corresponding relationship between the UE local IP address and the APN and the current PCRF.

[0084] Specifically, in this embodiment, the PGW carries the UE NAI, UE IP address and APN in the IP-CAN session establishment request message, and also carries the UE local IP address. After ...

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Abstract

The invention discloses a policy and charging rules function (PCRF) determination method, a PCRF determination device and a PCRF determination system, which relate to a communication technology. in the PCRF determination method provided by the embodiment of the invention, correspondence among at least one piece of user equipment (UE) address information, an access point name and a PCRF address is established in a diameter routing agent (DRA), and when the UE transmits a traffic unloading message to an application function (AF) or a traffic detection function (TDF), the traffic unloading message carries the at least one piece of UE address information in correspondence with the PCRF address; therefore, the AF or TDF can provide the UE address information and the APN for the DRA, and the DRA can select an accurate PCRF for a session.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method, device and system for determining PCRF. Background technique [0002] The BBAI (BroadBand Access Interworking, Broadband Access Interworking) research project in 3GPP R11 (Third Generation Partnership Project Release 11, 3rd Generation Partnership Project Release 11) proposed at the SA2#86 meeting based on WLAN (Wireless Local Access Network , wireless local area network) access, traffic offload (unload) interconnection architecture through the local wired network, and the policy interaction process. [0003] When the UE's communication peer is AF (Application Function, application function) or TDF (Traffic Detection Function, traffic detection function), it is necessary to select the IP-CAN (IP-Connectivity Access Network, IP connection access network) selected when the session is established PCRF (Policy and Charging Rules Function, policy and charging rule functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/10
Inventor 邓强
Owner DATANG MOBILE COMM EQUIP CO LTD
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