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1. (WO2016057095) IMPROVED RESUMPTION OF PDN CONNECTIONS FOR DEVICES REGAINING WLAN CONNECTIVITY

Pub. No.:    WO/2016/057095    International Application No.:    PCT/US2015/038681
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Wed Jul 01 01:59:59 CEST 2015
IPC: H04W 76/06
H04W 76/02
H04W 28/02
H04W 36/00
H04W 36/02
H04W 88/16
Applicants: INTEL IP CORPORATION
Inventors: GUPTA, Vivek
STOJANOVSKI, Alexandre Saso
Title: IMPROVED RESUMPTION OF PDN CONNECTIONS FOR DEVICES REGAINING WLAN CONNECTIVITY
Abstract:
Technology that allows PDN connections for a UE to be resumed efficiently after WLAN connectivity is lost and then regained are disclosed. A UE can have a multi-legged or multi-access packet-data-network (PDN) connection that is used to communicate with a WLAN and with an eNB. When WLAN connectivity is lost, the UE can send a WLAN-connectivity-loss communication to a PDN-GW via the eNB. A TWAG can also detect that the UE's WLAN connectivity has been lost and can send a suspension communication to the PDN-GW. The TWAG can also store PDN context information for the UE for a predefined period of time. When the UE regains WLAN connectivity, the UE can send a WLAN-link-control-protocol (WLCP) communication to the TWAG indicating that the UE wishes to resume one or more PDN connections that were previously suspended.