Scheduling method and control station apparatus

A base station apparatus comprising:na scheduling unit configured to perform a scheduling method by:nselecting a first communication terminal of a plurality of communication terminals to allocate a first block composed of two or more contiguous subcarriers,selecting a second communication terminal of the plurality of communication terminals to allocate a second block composed of two or more contiguous subcarriers wherein the number of subcarriers composing of the second block is different from the number of subcarriers composing of the first block,allocating, to the selected first communication terminal of the plurality of communication terminals, one or more first blocks,allocating, to the selected second communication terminal of the plurality of communication terminals, one or more second blocks; anda receiving unit configured to simultaneously receive a first Discrete Fourier Transform-spread-OFDM (DFT-S-OFDM) signal transmitted from the first communication terminal of the plurality of communication terminals, and a second Discrete Fourier Transform-spread-OFDM (DFT-S-OFDM) signal transmitted from the second communication terminal of the plurality of communication terminals.

A communication apparatus comprising:na Discrete Fourier Transform DFT unit configured to perform Fourier transform to convert a first time-domain signal into frequency-domain signals;an mapping unit configured to allocate the frequency-domain signals to one or more first blocks wherein the each first block is composed of two or more contiguous subcarriers;an Inverse Discrete Fourier Transform (IDFT) unit configured to perform inverse Fourier transform to convert the allocated frequency-domain signals into a second time-domain signal; anda radio unit configured to transmit, to a base station apparatus, the second time-domain signal simultaneously with other communication apparatus, in case that the other communication apparatus performs communication with the base station apparatus using a second block wherein the number of subcarriers composing of the second block is different from the number of subcarriers composing of the first block.

A communication system comprising:na base station apparatus;a first communication apparatus; anda second communication apparatus, whereinthe first communication apparatus and the second communication apparatus capable of simultaneously communicating with the base station apparatus,the base station apparatus is configured to perform a scheduling method by:nselecting the first communication apparatus to allocate a first block composed of two or more contiguous subcarriers,selecting the second communication apparatus to allocate a second block composed of two or more contiguous subcarriers wherein the number of subcarriers composing of the second block is different from the number of subcarriers composing of the first block,allocating, to the first communication apparatus, the one or more first blocks, andallocating, to the second communication apparatus, the one or more second blocks;generate first allocation information and second allocation information as the scheduling result, andtransmit the first allocation information and the second allocation information to the first communication apparatus and the second communication apparatus respectively;the first communication apparatus is configured to:nreceive the first allocation information, from the base station apparatus, andtransmit, based on the received first allocation information, a first Discrete Fourier Transform-spread-OFDM (DFT-S-OFDM) signal to the base station apparatus; andthe second communication apparatus is configured to:nreceive the second allocation information, from the base station apparatus, andtransmit, based on the received allocation information, a second Discrete Fourier Transform-spread-OFDM (DFT-S-OFDM) signal to the base station apparatus.