Method for making mobile-to-mobile wireless data communication

Abstract

Method for making a mobile-to-mobile wireless data communication in PCS (Personal Communication Services)/digital cellular mobile telecommunication system, is disclosed, which allows a direct communication without occupying an IWU, the method including the steps of (1) transmitting an originating instruction for a terminating mobile data terminal as an originating mobile data terminal sets up a service mode, (2) making a communication using a first radio link protocol (RLP) set up between the originating mobile data terminal and a base station/mobile switching center, (3) calling the terminating mobile data terminal through an identification number of the originating mobile data terminal and a service option as the originating instruction is executed, (4) informing a signal responding to the call to the originating mobile data terminal, (5) making a communication using a second RLP set up between the terminating mobile data terminal and the base station/mobile switching center, (6) setting up protocol layers in succession, the protocol layers having levels higher than levels of the first, and second RLP's, and (7) executing a wireless data communication between the originating, and terminating mobile data terminals.