The present invention is directed to a method and an apparatus for use in a wireless communication system. Specifically, the present invention is directed to a method and an apparatus of performing a network access procedure, the method comprising: receiving system information including Application-based (APP-based) information set, wherein the APP-based information set includes one or more APP-based information subsets, and each APP-based information subset is used to control network access per application; and performing the network access procedure under control of APP-based information subset corresponding to an application that causes the network access procedure.