Transmission apparatus and communication method
AssigneeNtt Docomo, Inc.
InventorsNobuhiko Miki, Kenichi Higuchi, Mamoru Sawahashi
Life of this patent
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Abstract
A transmission apparatus which multiplexes control channels for multiple reception apparatuses into an OFDM symbol at the same timing in OFDM downlink radio access includes a pattern generating unit configured to generate a frequency mapping pattern which is specific to the transmission apparatus; and a frequency allocating unit configured to allocate subcarriers to the control channels for the multiple reception apparatuses according to the frequency mapping pattern.
Claims11
A transmission apparatus which multiplexes control channels for multiple reception apparatuses into an OFDM symbol at the same timing in OFDM downlink radio access, comprising:
- a pattern generating unit configured to generate a frequency mapping pattern for changing subcarriers where the control channels for the multiple reception apparatuses are mapped on a transmission apparatus to transmission apparatus basis, the frequency mapping pattern being specific to the transmission apparatus;
- and
- a frequency allocating unit configured to allocate subcarriers to the control channels for the multiple reception apparatuses according to the frequency mapping pattern.
A communication method in which a transmission apparatus multiplexes control channels for multiple reception apparatuses into an OFDM symbol at the same timing in OFDM downlink radio access, comprising the steps of:
- generating a frequency mapping pattern for changing subcarriers where the control channels for the multiple reception apparatuses are mapped on a transmission apparatus to transmission apparatus basis, the frequency mapping pattern being specific to the transmission apparatus;
- allocating the control channels for the multiple reception apparatuses to subcarriers according to the frequency mapping pattern;
- and
- controlling transmission power for the subcarriers.
A transmission apparatus which multiplexes control channels for multiple reception apparatuses into an OFDM symbol at the same timing in OFDM downlink radio access, comprising:
- a frequency allocating unit configured to allocate subcarriers to the control channels for the multiple reception apparatuses according to a frequency mapping pattern for changing subcarriers where the control channels for the multiple reception apparatuses are mapped on a transmission apparatus to transmission apparatus basis, the frequency mapping pattern being specific to the transmission apparatus.
Dependencies are inferred from the claim text.