Radio communication system
First Claim
1. A radio communication system including a plurality of communication units consisting in a radio network in which one of the plurality of communication units operates in a master mode, other communication units operate in a slave mode, and transition into a suspend state are allowed during operation in the slave mode, wherein each of the plurality of communication units includes a battery as driving power, and a communication unit operating in the master mode stops transmission/reception operations in synchronization with the transition into the suspend state of the communication units operating in the slave mode.
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Accused Products
Abstract
The present invention provides a radio communication system in which not only a communication unit operating in a slave mode but also a communication unit operating in a master mode can be changed into a power saving mode.
Among a plurality of communication units, one of them is operating in the master mode while the others are operating in the slave mode. Only the communication units operating in the slave mode are allowed to be changed into a suspend state. The communication unit operating in the master mode stops transmission/reception in synchronization with transition into the stop state of the communication units operating in the slave mode.
32 Citations
25 Claims
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1. A radio communication system including a plurality of communication units consisting in a radio network in which one of the plurality of communication units operates in a master mode, other communication units operate in a slave mode, and transition into a suspend state are allowed during operation in the slave mode, wherein
each of the plurality of communication units includes a battery as driving power, and a communication unit operating in the master mode stops transmission/reception operations in synchronization with the transition into the suspend state of the communication units operating in the slave mode.
- 15. A radio communication system including a plurality of communication units consisting in a radio network in which one of the plurality of communication units operates in a master mode, other communication units operate in a slave mode, and transition into a power saving mode are allowed during operation in the slave mode while transition into the power saving mode being forbidden during operation in the master mode, wherein each of the plurality of communication units includes a battery as driving power, and the master mode and the slave mode are switched so as to equalize remaining battery life of the communication units.
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22. A radio communication system including a plurality of communication units consisting in a radio network in which one of the plurality of communication units operates in a master mode, other communication units operate in a slave mode, and transition into a power saving mode are allowed during operation in the slave mode while transition into the power saving mode being forbidden during operation in the master mode, wherein
each of the communication units comprises: -
means for calculating an operation maintaining time in operating in the master mode, and when the operation maintaining time becomes longer than a predetermined reference time, the master mode and the slave mode are switched between the communication unit operating in the master mode and one of the communication units operating in the slave mode.
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23. A radio communication system including a plurality of communication units consisting in a radio network in which one of the plurality of communication units operates in a master mode, other communication units operate in a slave mode, and transition into a power saving mode are allowed during operation in the slave mode while transition into the power saving mode being forbidden during operation in the master mode, wherein
each of the communication units comprises: -
a battery as driving power;
means for calculating an operation maintaining estimated time in an actual operation mode; and
means for exchanging information on the operation maintaining estimated time with other communication units, and the master mode and the slave mode are switched in such a manner that a communication unit of which an operation maintaining estimated time is long operates in the master mode while communication units of which operation maintaining estimated times are short operate in the slave mode.
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24. A radio communication system including a plurality of communication units consisting in a radio network in which one of the plurality of communication units operates in a master mode, other communication units operate in a slave mode, and transition into a power saving mode are allowed during operation in the slave mode while transition into the power saving mode being forbidden during operation in the master mode, wherein:
each of the communication units comprises;
means for calculating a cumulative time of operating in the power saving mode; and
means for exchanging information on the cumulative time with other communication units, and the master mode and the slave mode are switched in such a manner that a communication unit of which a cumulative time is long operates in the master mode while communication units of which cumulative times are short operate in the slave mode.
Specification