US Patent No. 10,485,051

HANDLING OF INACTIVE PARAMETERS UPON RELEASE AND RE-SUSPEND


Patent No. 10,485,051
Issue Date November 19, 2019
Title Handling Of Inactive Parameters Upon Release And Re-suspend
Inventorship Gunnar Mildh, Sollentuna (SE)
Icaro L. J. da Silva, Solna (SE)
Assignee TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)

Claim of US Patent No. 10,485,051

1. A method in a User Equipment, UE, comprising:transmitting a Radio Resource Control, RRC, resume request message;
in response to the RRC resume request message, receiving an RRC connection release message with an indication for suspend; and
in response to receiving the RRC connection release message with the indication for suspend, replacing information in a stored Access Stratum, AS, context of the UE with new information, wherein replacing the information in the stored AS context of the UE comprises:
replacing stored security context information with security context information comprised in the RRC connection release message;
replacing a stored Inactive Radio Network Temporary Identifier, I-RNTI, with an I-RNTI comprised in the RRC connection release message;
replacing a stored cell identity with a cell identity of a cell in which the UE sent the RRC resume request message and received the RRC connection release message;
replacing a stored physical cell identity with a physical cell identity of the cell in which the UE sent the RRC resume request message and received the RRC connection release message; and
replacing a stored Cell Radio Network Temporary Identifier, C-RNTI, with a C-RNTI obtained by the UE for the cell in which the UE sent the RRC resume request message and received the RRC connection release message.