Patent ID: 8462720

Claim:
A transmission apparatus for transmitting a frame in an ultra-wideband radio communication system, the transmission apparatus comprising: a frame generation unit to generate a physical layer (PHY) Protocol Data Unit (PPDU) frame including a Physical Layer Convergence Protocol (PLCP) preamble, a PLCP header, a PPDU payload, and an antenna training sequence; a mode insertion unit to insert, in a fixed length-physical layer header of the PLCP header, information about a mode of a first segment when the PPDU frame is generated, the mode being included in the PPDU frame; and a beacon reading unit to receive a beacon frame from a reception apparatus, and to verify a minimum length of the first segment inserted in a Media Access Control (MAC) capabilities information element (IE) field of the beacon frame or a PHY capabilities IE field of the beacon frame.