US 12,356,234 B2
Method for transmitting downlink packet in function-separated core network
Sangsoo Jeong, Seoul (KR)
Assigned to SK TELECOM CO., LTD., Seoul (KR)
Filed by SK TELECOM CO., LTD., Seoul (KR)
Filed on Mar. 8, 2023, as Appl. No. 18/118,779.
Application 18/118,779 is a continuation of application No. 16/840,321, filed on Apr. 3, 2020, granted, now 12,107,777.
Application 16/840,321 is a continuation of application No. 16/044,906, filed on Jul. 25, 2018, granted, now 10,659,397, issued on May 19, 2020.
Application 16/044,906 is a continuation of application No. PCT/KR2016/013330, filed on Nov. 18, 2016.
Claims priority of application No. 10-2016-0008674 (KR), filed on Jan. 25, 2016.
Prior Publication US 2023/0224263 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 28/02 (2009.01); H04L 49/90 (2022.01); H04W 28/14 (2009.01); H04W 40/34 (2009.01); H04W 72/542 (2023.01); H04W 88/16 (2009.01); H04W 88/02 (2009.01); H04W 88/08 (2009.01)
CPC H04W 28/02 (2013.01) [H04L 49/90 (2013.01); H04W 28/0278 (2013.01); H04W 28/14 (2013.01); H04W 40/34 (2013.01); H04W 72/542 (2023.01); H04W 88/16 (2013.01); H04W 88/02 (2013.01); H04W 88/08 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A user equipment (UE) comprising:
means for receiving a downlink packet in an idle mode in a mobile communication system in which a gateway is separated into a user plane node and a control plane node, wherein the downlink packet is transmitted to the UE by a process comprising:
informing, by the control plane node, information for receiving the downlink packet for the UE and notifying a reception of the downlink packet in the idle mode to the user plane node, wherein the information includes a preset buffering time;
receiving and buffering, by the user plane node, the downlink packet for the UE during the idle mode based on the information;
delaying, by the user plane node, transmitting of a notification message to the control plane node until the preset buffering time elapses;
transmitting, by the user plane node, the notification message of reception of the downlink packet to the control plane node; and
transmitting, by the user plane node, the buffered downlink packet to the UE through a base station,
wherein the user plane node is separated into an old user plane node and a new user plane node, and
wherein in case of relocation of the user plane node, the buffered downlink packet is transferred from the old user plane node to the new user plane node.