Radio communication system

Abstract

A radio communication system for exchange of information used in a radio frame format between a base station and a terminal, the radio communication system wherein, the base station includes: a selector configured to select a radio frame format for each terminal from a plurality of radio frame formats divided in a frequency direction; a frame format generator configured to map a radio channel, includes a dedicated control channel and data channel, for each terminal in the selected radio frame format, a controller configured to control the dedicated control channel position in a time direction in the radio frame format for the terminal to differ from other dedicated control channel position for other terminal; a transmitter configured to transmit information indicating the position of the dedicated control channel to the terminal that includes: a receiver configured to receive the information indicating the position of the dedicated control and radio channel.

What is claimed is: 
     
         1 . A radio communication system for exchange of information used in a radio frame format between a base station and a terminal, the radio communication system wherein,
 the base station comprises:
 a selector configured to select a radio frame format for each terminal from a plurality of radio frame formats divided in a frequency direction; 
 a frame format generator configured to map a radio channel, which includes a dedicated control channel and a dedicated data channel, for each terminal in the selected radio frame format, 
 a controller configured to control the dedicated control channel position in a time direction in the radio frame format for the terminal to differ from other dedicated control channel position for other terminal; and 
 a transmitter configured to transmit information indicating the position of the dedicated control channel to the terminal; and 
   the terminal comprises:
 a receiver configured to receive the information indicating the position of the dedicated control channel and the radio channel. 
   
     
     
         2 . A base station used in a radio communication system comprising:
 a selector configured to select a radio frame format for each terminal from a plurality of radio frame formats divided in a frequency direction;   a frame format generator configured to map a radio channel, which includes a dedicated control channel and a dedicated data channel, for each terminal in the selected radio frame format;   a controller configured to control the dedicated control channel position in a time direction in the radio frame format for the terminals to differ from other dedicated control channel position for other terminal; and   a transmitter configured to transmit information indicating the position of the dedicated control channel and the radio channel.   
     
     
         3 . A radio communication method used in a radio communication system for exchange of information used in a radio frame format between a base station and a terminal, the radio communication method comprising:
 in the base station,
 by a selector selecting a radio frame format for each terminal from a plurality of radio frame formats divided in a frequency direction; 
 by a frame format generator, mapping a radio channel, which includes a dedicated control channel and a dedicated data channel, for each terminal in the selected radio frame format, 
 by a controller, controlling the dedicated control channel position in a time direction in the radio frame format for the terminal to differ from other dedicated control channel position for other terminal; and 
 by a transmitter, transmitting information indicating the position of the dedicated control channel to the terminal; and 
   in the terminal,
 by a receiver, receiving the information indicating the position of the dedicated control channel and the radio channel. 
   
     
     
         4 . A terminal communicating with a base station in a radio communication system, the terminal comprising:
 a receiver configured to receive information indicating the position of a dedicated control channel and a radio channel, from a base station, wherein   the base station selects a radio frame format for each terminal from a plurality of radio frame formats divided in a frequency direction; maps a radio channel, which includes a dedicated control channel and a dedicated data channel, for each terminal in the selected radio frame format, and controls the dedicated control channel position in a time direction in the radio frame format for the terminal to differ from other dedicated control channel position for other terminal.