US 11,678,400 B2
Location and context management in a ran inactive mode
William Anthony Gage, Stittsville (CA); and Nathan Edward Tenny, Road Poway, CA (US)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Jan. 7, 2021, as Appl. No. 17/143,617.
Application 17/143,617 is a continuation of application No. 16/103,286, filed on Aug. 14, 2018, granted, now 10,893,568.
Claims priority of provisional application 62/547,452, filed on Aug. 18, 2017.
Prior Publication US 2021/0212152 A1, Jul. 8, 2021
Int. Cl. H04W 4/00 (2018.01); H04W 76/27 (2018.01); H04L 9/08 (2006.01); H04W 12/069 (2021.01); H04W 76/30 (2018.01); H04W 76/10 (2018.01); H04W 12/04 (2021.01); H04W 52/02 (2009.01)
CPC H04W 76/27 (2018.02) [H04L 9/088 (2013.01); H04L 9/0844 (2013.01); H04W 12/04 (2013.01); H04W 12/069 (2021.01); H04W 52/0206 (2013.01); H04W 76/10 (2018.02); H04W 76/30 (2018.02); H04L 9/0819 (2013.01); H04L 2209/80 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An anchor node comprising a memory and at least one processor configured to:
receive, from a second network node, a request message comprising an identifier of a user equipment (UE) operating in an inactive mode and a first message, the first message being protected with a first cryptographic key;
validate the first message using a stored cryptographic key associated with a UE context indicated by the identifier of the UE;
determine whether to relocate the UE context to the second network node; and
send a response message to the second network node, the response message indicative of whether the UE context is to be relocated, by the anchor node, to the second network node, wherein
the response message comprises a second message protected, by the anchor node, using a second cryptographic key when the response message is indicative that the UE context is not being relocated to the second network node.