Transmission power control method and system
AssigneeIndustrial Technology Research Institute
InventorsJIN-SHYAN LEE, Chun-Chieh Chuang
Life of this patent
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Abstract
A transmitting power level control method and system are provided, whereby the power of a terminal device in a wireless sensor network is saved and the lifetime thereof is extended. The control method includes the steps of: (A) broadcasting a plurality of transmitting power level (TPL) messages, each of which represents a respective TPL and the respective TPLs are different from one another, wherein each of the plurality of TPL messages is broadcasted at the respective TPL thereof; and (B) setting a TPL for the terminal device at a minimum one of the TPLs represented by the TPL messages received by the terminal device.
Claims20
A method of controlling a transmitting power for a terminal device, comprising the steps of:
- (A) broadcasting a plurality of transmitting power level (TPL) messages, each of which represents a respective TPL and the respective TPLs are different from one another, wherein each of the plurality of TPL messages is broadcasted at the respective TPL thereof;
- and
- (B) setting a TPL for the terminal device at a minimum one of the TPLs represented by the TPL messages received by the terminal device.
A system for controlling a transmitting power, comprising:
- a terminal device transmitting a detecting message and having a transmitting power level (TPL);
- and
- a cluster head receiving the detecting message and broadcasting a plurality of TPL messages, each of which represents a respective TPL and is broadcasted at the respective TPL thereof,
- wherein the respective TPLs are different from one another, the terminal device receives the plurality of TPL messages and the TPL for the terminal device is set at a minimum one of the TPLs represented by the received TPL messages.
A method of adjusting a transmitting power for a detecting device, comprising the steps of:
- (A) determining a successful message transmission ratio (SMTR) of the detecting device;
- and
- (B) comparing the SMTR with a threshold value, and adjusting a transmitting power level (TPL) of the detecting device according to a comparing result.
Dependencies are inferred from the claim text.