Communication method, communication terminal, and communication system
First Claim
1. A communication method for carrying out communication among a plurality of communication terminals, the method comprising allowing the plurality of terminals to enter a sleep state when or after one of the plurality of terminals sends out a first annunciation signal.
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Accused Products
Abstract
A communication terminal and a method of the present invention aim to save electric power in a wireless ad hoc network. According to the communication method, the signal transmission processing of stations is stopped in response to a beacon signal for sleep, which is sent from one of the stations. The signal transmission processing of the stations is carried out in response to a beacon signal for awakening. Since an operation mode of the stations is controlled by the beacon signal, it is possible to certainly transmit a signal, and secure a sleep state for saving electric power.
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Citations
18 Claims
- 1. A communication method for carrying out communication among a plurality of communication terminals, the method comprising allowing the plurality of terminals to enter a sleep state when or after one of the plurality of terminals sends out a first annunciation signal.
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15. A communication method for carrying out communication in a wireless ad hoc network constructed by a plurality of communication terminals, the method comprising:
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stopping the signal transmission or receipt processing of the plurality of communication terminals in response to a first annunciation signal sent from one of the plurality of communication terminals; and
carrying out the signal transmission or receipt processing of the plurality of communication terminals in response to a second annunciation signal sent from one of the plurality of communication terminals.
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16. A communication system for carrying out communication among a plurality of communication terminals, the method comprising allowing the plurality of communication terminals to enter a sleep state when or after one of the plurality of communication terminals sends a first annunciation signal.
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17. A communication terminal which enters a sleep state upon sending or receiving a first annunciation signal, and maintains an active state upon sending or receiving a second annunciation signal.
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18. A program which makes a computer perform
a function of shifting the operation state of a wireless interface into a sleep state, in which only part of functions are available, upon sending or receiving a first annunciation signal, and a function of maintaining the operation state of the wireless interface in an active state, in which every function is available, upon sending or receiving a second annunciation signal.
Specification