Abstract: The present invention provides a method for playing contents, which are stored in a storage device connected via at least one interface, the method comprising: detecting a connection of the storage device; transmitting transaction information stored in the detected storage device to a license server, wherein the transaction information includes transaction identification information which identifies a corresponding transaction and a user; receiving, from the license server, license information allowing to play the contents; and playing the contents on the basis of the license information, wherein the license information includes a license file and a license key.

Abstract: Provided are a cell selection method performed by UE in a wireless communication system and UE using the method. The method includes generating data use pattern information, the data use pattern information including an amount of data used for each moving speed of the UE, receiving data providing pattern information that informs an amount of data provided by the wireless communication system for each specific moving speed of the UE, determining an access type of the UE based on the data use pattern information and the data providing pattern information, selecting a type of a cell to be accessed according to the access type and selecting a cell from cells having the cell type.