METHOD AND NETWORK NODE FOR SUPPORTING HANDOVER

WIPO Patent Application WO/2018/088808

A1

A network node according to the present invention supports user equipment that hands over from a first system to a second system. The network node receives protocol data unit (PDU) session information of the user equipment, and requests, on the basis of the session information, a packet data network (PDN) connection establishment in the second system to which the network node belongs. The user equipment may have a plurality of PDU sessions to be handed over from the first system to the second system, and the plurality of PDU sessions may comprise a primary PDU session and one or more secondary PDU sessions for the same data network (DN). The network node requests a PDN gateway (P-GW) to create a dedicated bearer for the PDN connection if in the secondary system, a default bearer of the PDN connection, to which the primary PDU session is mapped, cannot meet a QoS level of the secondary PDU session.

PARK SANGMIN (KR)
RYU JINSOOK (KR)
KIM HYUNSOOK (KR)
YOUN MYUNGJUNE (KR)
KIM JAEHYUN (KR)
KIM TAEHUN (KR)

PCT/KR2017/012633

May 17, 2018

November 09, 2017

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LG ELECTRONICS INC (KR)

H04W36/00; H04W36/14

KR20120073348A	2012-07-04
KR20150072081A	2015-06-29
KR20160068792A	2016-06-15

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NOKIA ET AL., UPDATES ON INTERWORKING AND MIGRATION SOLUTION 18.2: CALL FLOWS, 21 October 2016 (2016-10-21), Kaohsiung City, Taiwan

KIM, Yong In et al. (KR)

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