Radio communication system and radio communication method
First Claim
1. A radio communication system for carrying out communications between radio stations by modulating a plurality of signal sequences to be transmitted and received into at least one frequency channel assigned to each of a plurality of cells, a radio communication system characterized by having a channel mapping means for rearranging for each cell a plurality of frequency channels assigned with respect to each cell, and newly assigning particular frequency channels as a transmission and reception band of said signal sequences, and a bandwidth control means for controlling a bandwidth of said assigned frequency channel according to a propagation state of said assigned frequency channel.
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Accused Products
Abstract
A radio communication system for carrying out communications between radio stations by modulating a plurality of signal sequences to be transmitted and received into at least one frequency channel assigned to each of a plurality of cells is formed by a channel mapping means for rearranging for each cell a plurality of frequency channels assigned with respect to each cell, and newly assigning particular frequency channels as a transmission and reception band of said signal sequences, and a bandwidth control means for controlling a bandwidth of said assigned frequency channel according to a propagation state of said assigned frequency channel.
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Citations
26 Claims
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1. A radio communication system for carrying out communications between radio stations by modulating a plurality of signal sequences to be transmitted and received into at least one frequency channel assigned to each of a plurality of cells, a radio communication system characterized by having
a channel mapping means for rearranging for each cell a plurality of frequency channels assigned with respect to each cell, and newly assigning particular frequency channels as a transmission and reception band of said signal sequences, and a bandwidth control means for controlling a bandwidth of said assigned frequency channel according to a propagation state of said assigned frequency channel.
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4. A radio communication system for carrying out communications between radio stations through frequency channels assigned to each of a plurality of areas, a radio communication system characterized by having
a channel mapping circuit for carrying out rearrangement of assignment of said frequency channels, and assigning particular continuous frequency channels of a system band for each of said areas, and a converter for converting the frequency channels rearranged by said channel mapping circuit into sub-carriers by orthogonal multiplexing.
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10. In a signal transmission system for converting information data sequences into a plurality of channels, and transmitting and receiving a signal sequence of each of these plurality of channels by a plurality of orthogonalized sub-carrier signals, a radio communication system characterized by having
a fading estimation means for estimating a propagation route of said sub-carrier signals, and a sub-carrier bandwidth control means for controlling a bandwidth of said sub-carrier signals to be transmitted and received, according to a fading information estimated by said fading estimation means.
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17. A radio communication method for carrying out communications between radio stations by modulating a plurality of signal sequences to be transmitted and received into at least one frequency channel assigned to each of a plurality of cells, a radio communication method characterized by having
(a) a step for rearranging for each cell a plurality of frequency channels assigned with respect to each cell, and newly assigning particular frequency channels as a transmission and reception band of said signal sequences, and (b) a step for controlling a bandwidth of said assigned frequency channel according to a propagation state of said assigned frequency channel.
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18. The radio communication method characterized in that
said step (a) is a step for carrying out communications between radio stations through the frequency channel assigned to each of a plurality of areas, and has (a1) a step for carrying out rearrangement of assignment of said frequency channels, and assigning particular continuous frequency channels of a system band for each of said areas, and (a2) a step for converting the frequency channels rearranged by said channel mapping circuit into sub-carriers by orthogonal multiplexing.
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19. The radio communication method characterized in that
said step (b) is a step for converting information data sequences into a plurality of channels, and transmitting and receiving a signal sequence of each of these plurality of channels by a plurality of orthogonalized sub-carrier signals, and has (b1) a step for estimating a propagation route of said sub-carrier signals, and (b2) a step for controlling a bandwidth of said sub-carrier signals to be transmitted and received, according to a fading information estimated by said step (b1).
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20. A radio communication method for carrying out communications between radio stations through frequency channels assigned to each of a plurality of areas, a radio communication method characterized by having
(a1) a step for carrying out rearrangement of assignment of said frequency channels, and assigning particular continuous frequency channels of a system band for each of said areas, and (a2) a step for converting the frequency channels rearranged by said channel mapping circuit into sub-carriers by orthogonal multiplexing.
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23. In a signal transmission method for converting information data sequences into a plurality of channels, and transmitting and receiving a signal sequence of each of these plurality of channels by a plurality of orthogonalized sub-carrier signals, a radio communication method characterized by having
(b1) a step for estimating a propagation route of said sub-carrier signals, and (b2) a step for controlling a bandwidth of said sub-carrier signals to be transmitted and received, according to a fading information estimated by said step (b1).
Specification