US 11,889,301 B2
Security verification when resuming an RRC connection
Gunnar Mildh, Sollentuna (SE); and Icaro L. J. Da Silva, Solna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Jun. 20, 2022, as Appl. No. 17/844,443.
Application 17/844,443 is a continuation of application No. 17/066,022, filed on Oct. 8, 2020, granted, now 11,399,278.
Application 17/066,022 is a continuation of application No. 16/346,895, granted, now 10,834,581, issued on Nov. 10, 2020, previously published as PCT/SE2019/050271, filed on Mar. 26, 2019.
Claims priority of provisional application 62/648,116, filed on Mar. 26, 2018.
Prior Publication US 2022/0330018 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 12/03 (2021.01); H04W 12/037 (2021.01); H04W 76/19 (2018.01); H04W 76/28 (2018.01); H04W 76/38 (2018.01); H04W 76/27 (2018.01); H04W 80/08 (2009.01); H04W 12/106 (2021.01)
CPC H04W 12/037 (2021.01) [H04W 12/106 (2021.01); H04W 76/19 (2018.02); H04W 76/27 (2018.02); H04W 76/28 (2018.02); H04W 76/38 (2018.02); H04W 80/08 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method, in a wireless device operating in a wireless network, for providing security of messages, the method comprising:
generating one or more security keys for encryption and/or integrity protection of signaling and/or data, using one or more security parameters received by the wireless device while in a Radio Resource Control (RRC) inactive state;
sending, while in the RRC inactive state, a message requesting resumption of an RRC connected state;
starting a timer according to a predetermined value, upon sending the message; and
while said timer is running, attempting decryption and/or integrity check handling for all packets received from the wireless network, using the generated one or more security keys.