Wireless communication system, wireless communication apparatus, wireless communication method and computer program
First Claim
1. A wireless communication system for forming a network with a plurality of wireless communication apparatuses without relationship between a controlling station and a controlled station in a communication environment having a plurality of channels, wherein:
- each of said wireless communication apparatuses;
notifies beacon information containing seed information corresponding uniquely to a beacon transmission timing and a transmission channel of its own station, when one of said wireless communication apparatuses newly participates in the network, the new entry apparatus identifies a channel switching pattern for beacon transmission on each channel, in accordance with the seed information in the information of a beacon received from another station, selects one candidate of own station from candidates not in use of the beacon transmission timing and transmission channel, and transmits the beacon information.
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Accused Products
Abstract
In a self-organized distribution type wireless network without relationship between a controlling station and a controlled station, in order to execute a channel access by effectively utilizing a plurality of frequency channels, there is provided a communication system. In the system, a communication station determines a seed and generates a frequency channel switching pattern basing upon the seed. The seed is written in a beacon in each transmission frame to notify it to other stations. A new entry station scans all frequency channels, identifies a channel switching pattern of the frequency channels in accordance with the seed in the beacon received from another station, selects a candidate of a beacon transmission position and a transmission channel, and determines the beacon transmission position and transmission channel which are best for own station to transmit a beacon.
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Citations
21 Claims
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1. A wireless communication system for forming a network with a plurality of wireless communication apparatuses without relationship between a controlling station and a controlled station in a communication environment having a plurality of channels, wherein:
each of said wireless communication apparatuses;
notifies beacon information containing seed information corresponding uniquely to a beacon transmission timing and a transmission channel of its own station, when one of said wireless communication apparatuses newly participates in the network, the new entry apparatus identifies a channel switching pattern for beacon transmission on each channel, in accordance with the seed information in the information of a beacon received from another station, selects one candidate of own station from candidates not in use of the beacon transmission timing and transmission channel, and transmits the beacon information. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless communication apparatus operating in a wireless communication environment without relationship between a controlling station and a controlled station in which a plurality of channels are prepared, said wireless communication apparatus comprising:
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communication means for transmitting and receiving wireless data;
control means for controlling a transmission/reception operation of the wireless data by said communication means;
beacon transmission position control means for determining a beacon transmission timing and a transmission channel of its own station;
seed information generation means for generating seed information uniquely corresponding to a channel switching pattern defining the determined beacon transmission timing and the transmission channel of the own station; and
beacon information notification means for notifying beacon information including the generated seed information every predetermined frame period within a communication range of said communication means. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A wireless communication method for operating in a wireless communication environment without relationship between a controlling station and a controlled station in which a plurality of channels are prepared, said wireless communication method comprising:
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a beacon transmission position control step for determining a beacon transmission timing and a transmission channel of its own station;
a seed information generation step for generating seed information uniquely corresponding to a channel switching pattern defining the determined beacon transmission timing and the transmission channel of the own station; and
a beacon information notification step for notifying beacon information including the generated seed information every predetermined frame period within a communication range of said communication means. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A computer program described in a computer-readable format so as to execute, on a computer system, a process for operating in a wireless communication environment without relationship between a controlling station and a controlled station in which a plurality of channels are prepared, said computer program comprising:
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a beacon transmission position control step for determining a beacon transmission timing and a transmission channel of its own station;
a seed information generation step for generating seed information uniquely corresponding to a channel switching pattern defining the determined beacon transmission timing and the transmission channel of the own station; and
a beacon information notification step for notifying beacon information including the generated seed information every predetermined frame period within a communication range of said communication means.
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Specification