An apparatus and method for Admission Control in a broadband wireless communication system are provided. Two or more of such abrasive solids each having these properties are consolidated to form an integral piece that can be trimmed into any desired shape so as to perform both the rough and smooth abrasion works for removal of rust, without using and changing any ordinary abrasive tools one after another. The first opening is adapted to receive a test sensor from the first test-sensor cartridge. Wireless propagation information is provided that identifies an address for the mobile device to receive the service book. The location of the ball is constantly monitored each time the ball is struck.