Multi-level transmission power configuration method for wireless sensor network

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.

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...

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Problems solved by technology

[0021] The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art, and certainly based on and improve the two existing transmission power setting methods, the technical problems to be solved are as follows: (1) Solving the distance-based transmission power setting method The lack of transmission power accuracy; (2) Solve the problem of excessive energy consumption in the implementation process in the tentative-based transmission power setting method; (3) Especially considering the impact of environmental interference on node communication, dynamically set the transmission of network nodes Power, reduce the influence of environmental interference on power setting, and improve the success rate of transmission power setting

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