Multi-level transmission power configuration method for wireless sensor network

A wireless sensor and transmission power technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as large energy consumption, achieve the effect of reducing energy, reducing communication conflicts and crosstalk, and reducing energy consumption

CN103379608BActive Publication Date: 2017-06-09SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-06-09

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Abstract

The invention discloses a method for configuring multilevel transmitting power in the wireless sensor network. When a communication service is initially initiated by a sending node to a receiving node in the wireless sensor network, the theoretical communication distance between the two communication nodes is measured and calculated by the sending node. Theoretical transmitting power needed by the nodes is calculated, the stages of the transmitting power are initially selected, and each transmitting power stage is provided with a plurality of transmitting power values. The node no-load received signal strength instruction namely RSSI detection is sent out, and the needed transmitting power stages are dynamically adjusted. The minimum effective transmitting power value is determined from the selected transmitting power stages based on the exploratory transmitting power control method. The transmitting power values determined based on the power setting method are stored, and the transmitting power is set to initiate the communication service. The two nodes initiate the communication service again to directly acquire the stored transmitting power, and if the communication is failed, the stored transmitting power values are eliminated, and the method for configuring the multilevel transmitting power is launched again to set the transmitting power value suitable for a communication link.
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Description

[0001] 1. Technical field

[0002] The invention relates to the technical field of wireless network transmission power control, in particular to an optimized configuration method of wireless network node transmission power.

[0003] 2. Background technology

[0004] The main purpose of wireless sensor network transmission power control technology is to set a reasonable transmission power before initiating communication services, so as to complete the communication task with the minimum transmission power, thereby reducing energy consumption in the communication process and improving the energy utilization rate of the entire network. In addition, the transmission power control technology has the following three important functions:

[0005] (1) Adjust the network topology

[0006] Adjusting the node transmission power can change the communication distance of the node, and the network connectivity will also change accordingly. Setting too small transmission power may lead to poo...

Examples

Embodiment 1

[0046] Embodiment 1 of the present invention: the present invention proposes a method for dynamically setting transmit power in a hierarchical approximation mode. Generally, network nodes set the transmit power to the maximum value when the hardware is initialized. When a node in the network needs to initiate a communication service to the target node, it first searches its own transmit power table to see if there is the transmit power of the link. If the transmission power of the link is not retrieved, it indicates that the node has set an appropriate transmission power value, and the communication can be initiated directly with the transmission power. If the transmission power of the link is not retrieved, the power setting process of the technology of the present invention is started.

[0047] The radio frequency modules of general network nodes define several transmit power levels. For example, a piece of hardware defines 23 transmit power levels ranging from -28dBm to 4.5d...