PROTECTION OF DIRECTION INFORMATION IN NETWORK Russian patent published in 2020 - IPC H04W12/10 H04W12/04 H04L29/06 H04L9/32 

FIELD: physics.

SUBSTANCE: invention relates to wireless communication. Method of protecting network direction information carried by user equipment (UE) includes transmitting a registration request to a visitor public land mobile network (VPLMN). Upon successful authentication, the authentication server (AUSF) function generates a home network root key. Protected message containing direction information to the network is received from the first network node. Protected message is protected using a configuration key (Kconf) and a first message authentication code (MAC-1). Configuration key (Kconf) is determined by the home network root key, and the UE verifies the MAC-1. Based on Kconf and MAC-1, VPLMN does not change the direction information to the network. Acknowledgment message, protected by the second message authentication code (MAC-2), is transmitted to the home public land mobile network (HPLMN).

EFFECT: technical result consists in protection of direction information in a network.

38 cl, 24 dwg