Title:
S9 ROAMING SESSION CLEANUP WITH S9 CONNECTION FAILURE
Document Type and Number:
WIPO Patent Application WO/2018/122615
Kind Code:
A3
Abstract:
Various embodiments relate to a method performed by a network node for terminating an S9 roaming session, the method including: receiving a Gx roaming session termination request; forwarding a corresponding S9 roaming session termination request to a controlling Policy and Charging Rule Function (PCRF) node; waiting a preconfigured time interval; and terminating the S9 roaming session without receiving an expected S9 acknowledgement message from the controlling PCRF node. Embodiments can include scheduling an IPCAN session audit for a selected IPCAN session of an S9 roaming session at preconfigured time intervals; generating an IPCAN session status request message; converting the IPCAN session status request message to a corresponding S9 status request message; forwarding the S9 status request message to a visited PCRF node; and responsive to receiving an S9 message indicating an unknown session from the visited PCRF node, removing the selected IPCAN session at the network node.
Inventors:
MA HAIQING (CA)
DING ZHAOLIANG (CA)
DING ZHAOLIANG (CA)
Application Number:
PCT/IB2017/001760
Publication Date:
August 23, 2018
Filing Date:
December 28, 2017
Export Citation:
Assignee:
ALCATEL LUCENT (FR)
International Classes:
H04L12/14; H04M15/00; H04W4/24
Foreign References:
| US20120036257A1 | 2012-02-09 | |||
| US20110320544A1 | 2011-12-29 |
Attorney, Agent or Firm:
BERTHIER, Karine (FR)
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