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US 9,071,307 B2Granted
Wireless communication system, wireless communication apparatus, program and transmission method
AssigneeSharp Kabushiki Kaisha
InventorsOsamu Nakamura, Hiroki Takahashi, Jungo Goto, Kazunari Yokomakura, Yasuhiro Hamaguchi
Life of this patent
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Abstract
A wireless communication system includes a first wireless communication apparatus, which includes a plurality of transmission antennas and transmits signals in an MIMO scheme, and a second wireless communication apparatus, which receives the signals. The first wireless communication apparatus performs the same frequency allocation for transmission antennas from which the same data is transmitted in case that transmission is performed in a rank less than the number of transmission antennas.
Claims11
A terminal apparatus comprising:
- first and second transmission antennas;
- a mapping section configured to allocate a first signal to a first frequency, and allocate a second signal to a second frequency;
- and
- a transmission processing section configured to transmit the first signal via the first transmission antenna, and transmit the second signal via the second transmission antenna,
- wherein the transmission processing section is configured to transmit the first signal generated from first bit sequence, and transmit the second signal generated from the first bit sequence, in a case that the first frequency is the same as the second frequency, and
- the transmission processing section is configured to transmit the first signal generated from the first bit sequence, and transmit the second signal generated from a second bit sequence different from the first bit sequence, in a case that the first frequency is different from the second frequency.
3 more elements
A terminal apparatus comprising:
- first and second transmission antennas;
- a mapping section configured to allocate a first signal to a first frequency, and allocate a second signal to a second frequency;
- and
- a transmission processing section configured to transmit the first signal via the first transmission antenna, and transmit the second signal via the second transmission antenna,
- wherein the mapping section is configured to set such that the second frequency is the same as the first frequency, in a case that the first signal was generated from a first bit sequence, and the second signal was generated from the first bit sequence, and
- the mapping section is configured to set such that the first frequency is different from the second frequency, in a case that the first signal was generated from the first bit sequence, and the second signal was generated from a second bit sequence different from the first bit sequence.
3 more elements
A base station apparatus comprising:
- an allocation information generation section configured to generate frequency allocation information, the frequency allocation information being used by a terminal apparatus in a case that first and second signals are allocated to first and second frequencies, the terminal apparatus including first and second transmission antennas and a transmission processing section, the transmission processing section transmitting the first signal by the first frequency, the transmission processing section transmitting the second signal by the second frequency;
- and
- a transmission section configured to transmit, to the terminal apparatus, the frequency allocation information generated by the allocation information generation section,
- wherein the allocation information generation section is configured to generate the frequency allocation information such that the second frequency is the same as the first frequency, in case that the first signal was generated from first bit sequence, and the second signal was generated from the first bit sequence, and
- the allocation information generation section is configured to generate the frequency allocation information such that the second frequency is different from the first frequency, in a case that the first signal was generated from the first bit sequence, and the second signal was generated from a second bit sequence different from the first bit sequence.
2 more elements
A communication system comprising a terminal apparatus and a base station apparatus, wherein
- the terminal apparatus comprises:
- first and second transmission antennas;
- a mapping section configured to allocate a first signal to a first frequency, and allocate a second signal to a second frequency;
- and
- a transmission processing section configured to transmit the first signal via the first transmission antenna, and transmit the second signal via the second transmission antenna,
- wherein the transmission processing section is configured to transmit the first signal generated from a first bit sequence, and transmit the second signal generated from the first bit sequence, in a case that the first frequency is the same as the second frequency, and
- the transmission processing section is configured to transmit the first signal generated from the first bit sequence, and transmit the third second signal generated from a second bit sequence different from the first bit sequence, in a case that the first frequency is different from the second frequency.
4 more elements
A communication system comprising a terminal apparatus and a base station apparatus, wherein
- the terminal apparatus comprises:
- first and second transmission antennas;
- a mapping section configured to allocate a first signal to a first frequency, and allocate a second signal to a second frequency;
- and
- a transmission processing section configured to transmit the first signal via the first transmission antenna, and transmit the second signal via the second transmission antenna,
- wherein the mapping section is configured to set such that the second frequency is the same as the first frequency, in a case that the first signal was generated from a first bit sequence, and the second signal was generated from the first bit sequence, and
- the mapping section is configured to set such that the first frequency is different from the second frequency, in a case that the first signal was generated from the first bit sequence, and the second signal was generated from a second bit sequence different from the first bit sequence.
4 more elements
A communication system comprising a terminal apparatus and a base station apparatus, wherein
- the terminal apparatus comprises:
- first and second transmission antennas;
- and
- a transmission processing section configured to transmit a first signal by a first frequency, and transmit a second signal by a second frequency, and
- the base station apparatus comprises:
- an allocation information generation section configured to generate frequency allocation information, the frequency allocation information being used by the terminal apparatus in a case that the first and second signals are allocated to the first and second frequencies;
- and
- a transmission section configured to transmit, to the terminal apparatus, the frequency allocation information generated by the allocation information generation section,
- wherein the allocation information generation section is configured to generate the frequency allocation information such that the second frequency is the same as the first frequency, in a case that the first signal was generated from a first bit sequence, and the second signal was generated from the first bit sequence, and
- the allocation information generation section is configured to generate the frequency allocation information such that the second frequency is different from the first frequency, in a case that the first signal was generated from the first bit sequence, and the second signal was generated from second bit sequence different from the first bit sequence.
7 more elements
Dependencies are inferred from the claim text.