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AssigneeNippon Telegraph and Telephone Corporation
InventorsJun Mashino, Takatoshi Sugiyama
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In a communication system configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, a superposed rate which is a rate in which a superposed band in which interference is occurring is used in a used frequency band used for transmitting the multicarrier signal is set so as to increase frequency utilization efficiency of the used frequency band, and the multicarrier signal is transmitted using a spectrum allocated in accordance with the set superposed rate.
A communication method in a communication system configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, the communication method comprising:
A communication method in a communication system configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, the communication method comprising:
A communication method in a communication system configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, the communication method comprising:
A control station device for determining an arrangement of a spectrum when three or more communication systems respectively configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers simultaneously perform communication, the control station device comprising:
A transmitting station device in a communication system configured by the transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, the transmitting station device comprising:
A transmitting station device in a communication system configured by the transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, the transmitting station device comprising:
A communication system for determining an arrangement of a spectrum when three or more communication systems respectively configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers simultaneously perform communication, the communication system comprising:
Dependencies are inferred from the claim text.
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The frequencies being orthogonal, e.g. OFDM or DMT: the frequencies being arranged in component carriers
Arrangements for allocating sub-channels of the transmission path: inter-user or inter-terminal allocation
Arrangements for allocating sub-channels of the transmission path: allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals
About 3 years 11 months of term left · ends 12 Sep 2030 (estimated)
This application is a 371 U.S. National Stage of International Application No. PCT/JP2009/006594, filed Dec. 3, 2009. This application claims priority to Japanese Patent Application No. 2008-309815, filed Dec. 4, 2008, and Japanese Patent Application No. 2008-322865, filed Dec. 18, 2008. The disclosures of the above applications are incorporated herein by reference.
The present invention relates to communication using a multicarrier signal, and more particularly, to a control station device, a transmitting station device, a communication method, and a communication system for use in a multicarrier communication scheme to which an error correction code is applied.
In view of a problem that frequency resource depletion has recently been intensified in wireless communication fields, shared-frequency wireless communication is desired. FIG. 27 is a conceptual diagram showing the entirety of two wireless local area network (LAN) systems with different frequency channels, as an example of a combination of wireless communication systems sharing a frequency band.
FIG. 1 is a block diagram showing a communication system in accordance with a first embodiment of the present invention.
FIG. 2A is a diagram showing a superposition in a frequency arrangement in accordance with the first embodiment.
FIG. 2B is a diagram showing a superposition in a frequency arrangement in accordance with the first embodiment.
Hereinafter, communication systems in accordance with respective embodiments of the present invention will be described with reference to the drawings.
Compared to conventional communication systems, one of features of the respective embodiments of the present invention is that a superposed rate (i.e., a rate in which a superposed band in which interference is occurring is used in a frequency band used to transmit a signal, the rate being derived from a bandwidth of a spectrum and a predetermined superposed bandwidth which is superposed on another spectrum) is set so as to improve the total frequency utilization efficiency.
(First Embodiment)