FIELD: computer equipment.
SUBSTANCE: invention relates to computer engineering. Method comprises steps of: receiving, from a source base station in a wireless communication network access network, a first handover request indicating that handover of user equipment is required; outputting the new layer key without access in response to the decision that the operator-dependent policy is executed; sending, in response to the handover message, a new layer key without access to the target access control and mobility function in the wireless communication core network; and, in the second handover message, sending a flag indicating change of the key to the user equipment, wherein the indication flag is set by a value indicating change of the layer key without access.
EFFECT: technical result is providing effective security in wireless communication networks.
36 cl, 25 dwg
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