Patent ID: 11895723
Assignee: QUALCOMM INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method operational at a wireless communication device for wireless communication with a network, the method comprising:
establishing a radio communication connection with a first radio access node;
determining that the wireless communication device is experiencing a radio link failure (RLF) with the first radio access node and that the radio communication connection should be reestablished with a second radio access node that has not established an access stratum security association with the wireless communication device;
obtaining a message authentication code (MAC) based in part on one or more bits of a non-access stratum (NAS) COUNT value maintained at the wireless communication device; and
sending a reestablishment message including the MAC to the second radio access node, the MAC configured to enable a core network node communicatively coupled to the second radio access node to authenticate the wireless communication device and allow or reject reestablishment of the radio communication connection with the second radio access node.