Transmitting/receiving apparatus and transmitting/receiving method
First Claim
1. A reception apparatus comprising:
- a determination section that makes a determination of a propagation path state through which a received multicarrier signal is transmitted;
a specifying section that specifies a region having a propagation path state that is equal to or better than a predetermined level in a frequency band used for the received multicarrier signal, according to the determination result; and
a reporting section that reports region information indicating the specified region to a transmission apparatus.
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Accused Products
Abstract
A transmission/reception apparatus capable of preventing degradation in system capacity, improving system throughput, and minimizing power consumption of an apparatus is disclosed. In this apparatus, a propagation path determining section (131) determines a propagation path state in all the regions in the used frequency band of a received multicarrier signal based on propagation path estimation information such as a channel estimation value and the like calculated in a propagation path estimating section (126), and specifies a frequency region having a good propagation path state from the used frequency band of OFDM. More specifically, the used frequency band is divided into a plurality of frequency bands (subbands), each comprised of smaller predetermined bandwidth, and by selecting a subband having a good propagation path state in the propagation pathdetermining section (131), a frequency region having the good propagation path state is specified. A transmitting section (110) reports the subband information to a base station.
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Citations
29 Claims
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1. A reception apparatus comprising:
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a determination section that makes a determination of a propagation path state through which a received multicarrier signal is transmitted;
a specifying section that specifies a region having a propagation path state that is equal to or better than a predetermined level in a frequency band used for the received multicarrier signal, according to the determination result; and
a reporting section that reports region information indicating the specified region to a transmission apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 19, 20)
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15. A transmission apparatus comprising:
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an acquisition section that acquires from a reception apparatus, frequency band information indicating a frequency band having a propagation path state that is equal to or better than a predetermined level among a plurality of frequency bands, into which a frequency band used for a transmission multicarrier signal is divided and which are known to both a transmission apparatus and a reception apparatus; and
a transmitting section that transmits a signal to the reception apparatus via the frequency band indicated by the frequency band information. - View Dependent Claims (16, 18, 21, 22, 23, 24, 25, 26, 27)
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28. A reception method comprising the steps of:
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determining a propagation path state through which a received multicarrier signal is transmitted;
specifying a region having a propagation path state that is equal to or better than a predetermined level in a frequency band used for the received multicarrier signal, according to the determination result and reporting region information indicating the specified region to a transmission apparatus.
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29. A transmission method comprising the steps of:
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from a reception apparatus acquiring frequency band information indicating a frequency band having a propagation path state equal to or better than a predetermined level among a plurality of frequency bands, into which a frequency band used for a transmission multicarrier signal is divided and which are known to both a transmission apparatus and a reception apparatus; and
transmitting a signal to the reception apparatus via the frequency band indicated by the frequency band information.
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Specification