US 12,470,928 B2
Protecting capability information transfer in a wireless communication network
Paul Schliwa-Bertling, Ljungsbro (SE); Prajwol Kumar Nakarmi, Sollentuna (SE); Christofer Lindheimer, Vadstena (SE); and Helena Vahidi Mazinani, Lund (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/799,455
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 12, 2021, PCT No. PCT/EP2021/053452
§ 371(c)(1), (2) Date Aug. 12, 2022,
PCT Pub. No. WO2021/160800, PCT Pub. Date Aug. 19, 2021.
Claims priority of provisional application 62/976,897, filed on Feb. 14, 2020.
Prior Publication US 2023/0188992 A1, Jun. 15, 2023
Int. Cl. H04L 9/40 (2022.01); G06F 21/10 (2013.01); H04W 12/037 (2021.01); H04W 12/08 (2021.01)
CPC H04W 12/08 (2013.01) [G06F 21/10 (2013.01); H04L 63/0807 (2013.01); H04W 12/037 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A method performed by a wireless device, the method comprising:
receiving, over an access stratum, a capability enquiry that requests the wireless device to transmit capability information indicating one or more capabilities of the wireless device, the capability enquiry being received over the access stratum and not having access stratum security, the capabilities of the wireless device being access stratum capabilities; and
after receiving the capability enquiry:
generating a token using one or more input parameters and transmitting the token, the one or more input parameters including at least some part of the capability enquiry and some of the capability information that the wireless device has or will transmit, the token being generated or transmitted based on a non-access stratum security context at the wireless device; and
transmitting the capability information over the access stratum without having activated security over the access stratum, without having activated security over the access stratum comprising without the use of a security key for activating or applying integrity protection and without confidentiality protection over the access stratum.