Authentication of termination messages in telecommunications system

摘要: An authentication mechanism renders a communications network impervious to unauthorized requests for interaction termination or cessation. In release mode of operation, the protects against an connection message directed mobile node (30) network, e.g., station such as user equipment unit, thereby thwarting attempt request procedure concerning involving node. detach deceptively transmitted on behalf node, its modes involves first (Ni) at which key is provided. The uses derive indicia related key. provides second (Nr) network. Subsequently, when operation occur (e.g., detach), includes in over air interface between and As condition performing confirms that (which was included message) is, fact, indicia.