Communication apparatus, method of controlling same and communication system
AssigneeCanon Kabushiki Kaisha
InventorTadashi Eguchi
Life of this patent
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Abstract
In order to achieve more efficient data transfer by broadcast, a communication apparatus receives data that has been broadcast from a transmitting apparatus to a plurality of communication apparatuses, and transmits a response signal regarding the data using a carrier different from those of the other communication apparatuses from among a plurality of mutually orthogonal carriers.
Claims17
A communication apparatus comprising:
- a receiving unit that receives data that has been broadcast from a transmitting apparatus to a plurality of communication apparatuses;
- and
- a transmitting unit that transmits a response signal regarding the data received by the receiving unit, using a carrier different from carriers of the other communication apparatuses from among a plurality of mutually orthogonal carriers.
A communication apparatus comprising:
- a transmitting unit that broadcasts data to a plurality of communication parties;
- and
- a receiving unit that receives response signals, which indicate states of reception of the data, from the plurality of communication parties;
- wherein the receiving unit receives the response signals transmitted using carriers, which are different for every communication party, from among a plurality of mutually orthogonal carriers.
A method of controlling a communication apparatus, comprising:
- a receiving step of receiving data that has been broadcast from a transmitting apparatus to a plurality of communication apparatuses;
- and
- a transmitting step of transmitting a response signal regarding the data using a carrier different from carriers of the other communication apparatuses from among a plurality of mutually orthogonal carriers.
A method of controlling a communication apparatus, comprising:
- a broadcasting step of broadcasting data to a plurality of communication parties using a plurality of carriers;
- and
- a receiving step of receiving response signals, which indicate states of reception of the data, from the plurality of communication parties;
- wherein the response signals transmitted using carriers, which are different for every communication party, from among a plurality of mutually orthogonal carriers are received at the receiving step.
A communication system comprising a transmitting apparatus and a receiving apparatus, wherein the transmitting apparatus includes a first transmitting unit that broadcasts data to a plurality of receiving apparatuses;
- and
- the receiving apparatus includes:
- a receiving unit that receives the data transmitted by the first transmitting unit;
- and
- a second transmitting unit that transmits a response signal regarding the data received by the receiving unit, using a carrier different from carriers of the other communication apparatuses from among a plurality of mutually orthogonal carriers.
Dependencies are inferred from the claim text.