Patent ID: 8842617

Claim:
A radio resource allocation method for a subframe, the subframe comprising a plurality of orthogonal frequency division multiplexing(OFDM) symbols in a time domain and a plurality of subcarriers in a frequency domain, the radio resource allocation method comprising: allocating a first control channel to a first control zone in the subframe based on a first RAT (Radio Access Technology); allocating a second control channel to a second control zone in the subframe based on a second RAT; and allocating a data channel to a data zone, the data zone including OFDM symbols placed other than the first control zone and the second control zone in the subframe, wherein the first control zone and the second control zone do not overlap each other in the time domain, wherein the first control zone comprises a first number of OFDM symbols, the first number being indicated by a PCFICH (Physical Control Format Indicator Channel) included in the first control zone, wherein the second control zone comprises a second number of OFDM symbols, the second number being indicated by a radio resource control (RRC) message.