Apparatus and method for control information transmission in mobile communication system

The invention in a mobile communication system with receiver for receiving a transmitting apparatus and the data for transmitting data, by using the pilot pattern to be inserted to the pilot field of a dedicated physical channel for control information and an apparatus and method for transmission / reception. According to the present invention This can be done by selecting control information according to whether or not to receive the data, and selects a pilot pattern according to the control information. And it transmits to insert the selected pilot pattern to a pilot field of a dedicated physical channel as the control information. At this time, a pilot pattern is selected in accordance with the control information is an orthogonal pattern generated using the remaining bits except the pilot bit having a predetermined bit from among the usage of the base pilot pattern.