Patent ID: 8509138

Claim:
A method of communicating by a mobile station in an Institute of Electrical and Electronics Engineers (IEEE) 802.16m system, the method comprising: receiving information via a control channel of a super-frame from a base station, the information being related to an IEEE802.16e system; and transmitting signals using one or more tiles in a set of Orthogonal Frequency Division Multiple Access (OFDMA) symbols, the one or more tiles being related to the IEEE802.16e system or the IEEE802.16m system, when the information indicates that the IEEE802.16e system is supported, wherein, within the set of OFDMA symbols, one or more Partial Usage of Sub-Channels (PUSC) sub-channels of the IEEE802.16e system and one or more Distributed Resource Units (DRUs) of the IEEE802.16m system are frequency division multiplexed, wherein each PUSC sub-channel is based on a tile of X 1 contiguous subcarriers and Y 1 contiguous OFDMA symbols, wherein each DRU is based on a tile of X 2 contiguous subcarriers and Y 2 contiguous OFDMA symbols, the tile of X 2 contiguous subcarriers and Y 2 contiguous OFDMA symbols being obtained by an extension of the tile of X 1 contiguous subcarriers and Y 1 contiguous OFDMA symbols in a time domain, wherein X 1 =X 2 =4, Y 1 =3, and Y 2 =6, and wherein the set of OFDMA symbols consist of 6 OFDMA symbols.