A mobile station having a plurality of removable user identification modules, each configured to store a corresponding information associated with a corresponding plurality of user identifications; and key generation logic, configured generate a hash key based on the corresponding information according to the plurality of removable user identification modules; and hash logic, configured to employ the single hash key to determine a plurality of parameters, where each of the parameters comprises a single control channel that is common for all of the corresponding plurality of cellular subscriptions, and where the single control channel is employed for concurrent communications with a base station for the all of the corresponding plurality of cellular subscriptions.