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, andwhen 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, the channel switching pattern identifying an order in which the new entry apparatus will transmit on each channel, selects one candidate of own station from candidates not in use of the beacon transmission timing and transmission channel, and a 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
25 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:
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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, and 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, the channel switching pattern identifying an order in which the new entry apparatus will transmit on each channel, selects one candidate of own station from candidates not in use of the beacon transmission timing and transmission channel, and a 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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means for transmitting and receiving wireless data; means for controlling a transmission/reception operation of the wireless data by said means for transmitting and receiving; means for determining a beacon transmission timing and a transmission channel of its own station; 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, the channel switching pattern identifying an order in which the wireless communication apparatus will transmit on each channel; and means for notifying beacon information to other stations including the generated seed information every predetermined frame period within a communication range of said means for transmitting and receiving. - 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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determining a beacon transmission timing and a transmission channel of its own station; generating seed information uniquely corresponding to a channel switching pattern defining the determined beacon transmission timing and the transmission channel of the own station, the channel switching pattern identifying an order in which the own station will transmit on each channel; and notifying to other stations of beacon information including the generated seed information every predetermined frame period within a communication range of said own station. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A non-transitory computer readable medium including computer executable instructions, wherein the instructions, when executed by a processor, cause the processor to perform a 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 method comprising:
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determining a beacon transmission timing and a transmission channel of its own station; generating seed information uniquely corresponding to a channel switching pattern defining the determined beacon transmission timing and the transmission channel of the own station, the channel switching pattern identifying an order in which the own station will transmit on each channel; and notifying to other stations of beacon information including the generated seed information every predetermined frame period within a communication range of said own station.
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22. A wireless communication apparatus 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, the apparatus comprising:
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a beacon generation unit configured to transmit beacon information containing seed information corresponding uniquely to a beacon transmission timing and a transmission channel of the apparatus; a pattern switching identification unit configured to identify 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 apparatus, the channel switching pattern identifying an order in which the apparatus will transmit on each channel; and a timing and channel selection unit configured to select one beacon transmission timing and transmission channel not being used by another apparatus. - View Dependent Claims (23, 24, 25)
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Specification