Base station and mobile station constituting mobile communication system
First Claim
1. A base station included in a mobile communication system in which station-to-station communication is performed using a multicarrier modulating technique, comprising:
- a subcarrier set storing section operable to store information about a subcarrier set designating a plurality of subcarriers used in communication;
a subcarrier arranging section operable to generate modulation data obtained by providing transmission data only to the plurality of subcarriers designated by the subcarrier set; and
a modulation section operable to modulate the modulation data generated by the subcarrier arranging section into a base-band transmission signal based on the multicarrier modulating technique, wherein the plurality of subcarriers designated by the subcarrier set are included in the same frequency channel as that of at least another adjacent base station, and are different from subcarriers of the adjacent base station, and adjacent subcarriers are not used in each subcarrier set.
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Accused Products
Abstract
In a mobile communication system in which the same frequency channel f1 is used to perform communication of the same data between a moving mobile station 2 and a plurality of base stations 1a to 1d while sequentially establishing synchronization therebetween, subcarriers assigned to the base stations 1a to 1d are set so as to satisfy the following conditions. 1. The same frequency channel f1 is used for all the base stations. 2. Subcarriers do not overlap between adjacent base stations. 3. Adjacent subcarriers are not used in each subcarrier set. 4. All subcarriers within the frequency channel f1 (subcarriers having closest intervals which can hold an orthogonal relationship) are used.
52 Citations
9 Claims
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1. A base station included in a mobile communication system in which station-to-station communication is performed using a multicarrier modulating technique, comprising:
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a subcarrier set storing section operable to store information about a subcarrier set designating a plurality of subcarriers used in communication;
a subcarrier arranging section operable to generate modulation data obtained by providing transmission data only to the plurality of subcarriers designated by the subcarrier set; and
a modulation section operable to modulate the modulation data generated by the subcarrier arranging section into a base-band transmission signal based on the multicarrier modulating technique, wherein the plurality of subcarriers designated by the subcarrier set are included in the same frequency channel as that of at least another adjacent base station, and are different from subcarriers of the adjacent base station, and adjacent subcarriers are not used in each subcarrier set. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mobile station included in a mobile communication system in which station-to-station communication is performed using a multicarrier modulating technique, comprising:
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a demodulation section operable to demodulate a base-band received signal into demodulated data based on the multicarrier modulating technique; and
a demodulated data selection combining section operable to determine which of a plurality of predetermined subcarrier sets was used to transmit data, based on the demodulated data, and generate received data obtained by selecting a plurality of subcarriers designated by the determined subcarrier set, from the demodulated data, wherein all subcarriers designated by the plurality of subcarrier sets are included in the same frequency channel, the subcarriers are different between each subcarrier set, and adjacent subcarriers are not used in each subcarrier set.
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9. A method for performing communication between a base station and a mobile station using a multicarrier modulating technique, wherein
in the base station, the method comprises the steps of: -
previously storing information about a subcarrier set designating a plurality of subcarriers used in communication in a predetermined storing section;
generating modulation data obtained by providing transmission data only to the plurality of subcarriers designated by the subcarrier set; and
modulating the generated modulation data into a base-band transmission signal based on the multicarrier modulating technique, and in the mobile station, the method comprises the steps of;
demodulating a base-band received signal into demodulated data based on the multicarrier modulating technique;
determining which of the plurality of predetermined subcarrier sets was used to transmit data, based on the demodulated data; and
generating received data obtained by selecting a plurality of subcarriers designated by the determined subcarrier set, from the demodulated data, wherein the plurality of subcarriers designated by the subcarrier set are included in the same frequency channel as that of at least another adjacent base station, and are different from subcarriers of the adjacent base station, and adjacent subcarriers are not used in each subcarrier set.
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Specification