Methods and system are disclosed for subscription information configuration (200). A method comprises transmitting a subscription information configuration message from an external server to an authenticate apparatus, wherein the subscription information configuration message includes assistance information that configures parameters of a base unit for a mobile unit; authenticating, at the authenticate apparatus, the subscription information configuration message, and in response to a success of the authentication, sending the subscription information configuration message to a subscriber server; and storing, at the subscriber server, the subscription information configuration message.