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Methods, systems, and computer readable media for message flood suppression during access node-gateway (an-gw) unavailability and after an-gw restoration

A technology of AN-GW and access node, which is applied in the field of message flooding and can solve problems such as PCEF rejection

Active Publication Date: 2019-12-06
ORACLE INT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Signaling to the PCRF individually for each session involving an unavailable AN-GW places a burden on the PCEF, PCRF and intermediate networks
Furthermore, if the PCRF does not recognize the per-session AN-GW status information being delivered by the PCEF, the PCRF may continue to send messages to the PCEF for the failed session, resulting in a rejection from the PCEF

Method used

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  • Methods, systems, and computer readable media for message flood suppression during access node-gateway (an-gw) unavailability and after an-gw restoration
  • Methods, systems, and computer readable media for message flood suppression during access node-gateway (an-gw) unavailability and after an-gw restoration
  • Methods, systems, and computer readable media for message flood suppression during access node-gateway (an-gw) unavailability and after an-gw restoration

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 is a network diagram illustrating an exemplary operating environment for the subject matter described herein. refer to figure 1 , multiple user equipments (UEs) 100 establish sessions with the network through the AN-GW 102 . AN-GW 102 can handle hundreds or even thousands of user sessions at any given time. PGW or PCEF 104 (hereinafter referred to as PCEF 104 ) serves as an intermediate between AN-GW 102 and PCRF 106 . PCRF 106 performs policy and charging functions for user sessions with the network.

[0022] When AN-GW 102 becomes unavailable (e.g., due to operational failure or loss of network connectivity), messages from other network nodes (such as PCEF 104 and PCRF 106) may flood the network since message delivery is sent on a per-session basis And the only state information about AN-GW 102 maintained by PCRF 106 or PCEF 104 is per-session state. Therefore, AN-GW unavailability is detected for one session, this unavailability is not communicated to o...

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Abstract

According to one aspect, the subject matter described herein includes a system for suppressing message flooding during access note-Gateway (AN-GW) unavailability and / or after AN-GW restoration. The system includes a network node including at least one processor and a memory. The network node includes an interface for receiving an indication of unavailability of an AN-GW. An AN-GW status maintainermaintains, in the memory, a node-level AN-GW status indicator indicating availability or unavailability of the AN-GW and setting the node-level AN-GW status indicator to unavailable in response to receiving the indication of unavailability of the AN-GW. An AN-GW status checker checks status of the AN-GW using the node-level AN-GW status indicator and suppresses, based on the status of the AN-GW determined from the node-level AN-GW status indicator, messaging for plural sessions involving the AN-GW.

Description

[0001] priority claim [0002] This application claims the benefit of US Patent Application Serial No. 15 / 472,211, filed March 28, 2017, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The subject matter described herein relates to reducing or preventing message flooding in mobile communication networks. More specifically, the subject matter described herein relates to suppressing the relationship between Policy and Charging Enforcement Function (PCEF) or Packet Gateway (PGW) and Policy and Charging Rules Function (PCRF) during AN-GW unavailability and after AN-GW recovery. News floods in between. Background technique [0004] AN-GW is a node in the mobile communication network, through which the user equipment establishes a session with the network. In some cases, the AN-GW can handle hundreds or even thousands of user sessions. When the AN-GW fails or becomes unavailable, there is currently no mechanism in the networ...

Claims

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Application Information

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IPC IPC(8): H04W28/02
CPCH04W28/0247H04W28/0289H04W24/04H04W88/16
Inventor R·朱内贾
Owner ORACLE INT CORP