Networking Device Transmit Power Control via Path Loss
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Solution Overview
Problem
Existing EIRP assignment techniques in wireless networks face inaccuracies due to inconsistencies in signal-to-noise ratio and received signal strength measurements across different hardware, leading to increased RF interference and excessive power consumption, especially in dense deployments.
Innovation Solution
A network management device automatically detects anomalies in reported path loss values and adjusts them dynamically to determine target transmit powers, using parameters independent of device specifics to overcome hardware heterogeneity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If higher transmit powers are used to extend wireless communication range, then communication range is improved, but RF interference among wireless devices increases
Solution Approach 1:
The system dynamically adjusts the EIRP parameter based on measured path loss values and network conditions. By changing the transmit power parameter adaptively rather than using fixed high power, the system extends communication range when needed while reducing RF interference when devices are close together, thus resolving the contradiction between range and interference.
2Productivity
If EIRP settings are configured to optimize wireless device performance, then device performance is improved, but compliance with transmit power management guidelines may be compromised
Solution Approach 1:
The system implements a feedback mechanism where path loss measurements from receiving devices are reported back to the network administrator or management system. This feedback loop enables continuous monitoring and adjustment of EIRP settings to maintain both optimal performance and compliance with regulatory guidelines, resolving the contradiction between performance optimization and guideline compliance.
3Ease of operation
If path loss values are used to determine EIRP settings, then transmit power management is improved, but hardware heterogeneity causes measurement inconsistencies
Solution Approach 1:
The system performs preliminary calibration or characterization of path loss measurements across different hardware types. By establishing baseline measurement profiles or correction factors for different device hardware before actual EIRP assignment, the system compensates for hardware heterogeneity and improves measurement precision, thus resolving the contradiction between ease of operation and measurement accuracy.
Data Source
AI summary
An example method for managing transmit powers of a networking device is presented. A network management device is configured to determine an expected path loss value at a receiver of a first networking device based at least on the distance between the first networking device and the second networking device. Further, the network management device receives a measured path loss value relative to the second networking device from the first networking device. The network management device then determines a target transmit power for the transmitter of the second networking device based on the measured path loss value and an offset value. The offset value is determined based on the expected path loss value and the measured path loss value. After determining the target transmit power, the network management device sends an instruction to the second networking device to operate the transmitter at the target transmit power.