Abstract: A method is provided for providing wireless application protocol (WAP) service in which a content server on the Internet performs data processing at a wireless datagram protocol (WDP) layer and higher layers. The content server receives a WAP request message for wireless Internet service from a WAP terminal connected to a mobile communications network; processes the request; and constructs and transmits to the WAP terminal a response based on the WAP. A relay providing a communications channel between the mobile communications network and the Internet relays the request message and the response at a layer below the WDP layer. Accordingly, a mobile business company providing a communications channel between the mobile communications network and the Internet performs only a relay function at the layer below a WDP layer, and an actual content provider or WAP server performs data processing at the WDP layer and higher layers.

Abstract: A method for directly providing a wireless application protocol (WAP) service for wireless Internet in an actual content provider (or a WAP server) on the Internet, instead of using the relay server of a mobile business company providing a communications channel between a mobile communications network and the Internet, is provided. In the method, a content server on the Internet performs data processing at a wireless datagram protocol (WDP) layer and higher layers. The method includes the steps of (a) the content server receiving a user's request message for a wireless Internet service from a WAP terminal connected to a mobile communications network, the request message being based on a WAP; (b) processing the request message received in the step (a) based on the WAP; and (c) constructing a response message based on the WAP to reply to the user's request for wireless Internet service and transmitting the response message to the WAP terminal.

Abstract: A remote controller having a multifunction and a control method for controlling multiple appliances using the remote controller are provided. The remote controller includes a menu selector for displaying predetermined menus on a screen according to a menu key and a selection key and inputting a command of selecting a menu, a controller for outputting data corresponding to the command input from the menu selector, and a data transmitter for transmitting the data of the controller in the form of optical signals of a predetermined frequency band.