Antenna Orientation Sensing for Wireless Access Node Alignment
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Solution Overview
Problem
The orientation and polarization of wireless access node antennas significantly affect signal strength and coverage in wireless digital networks, particularly when access nodes are mounted differently, leading to variations in antenna height and polarization, which can result in signal loss when not properly aligned.
Innovation Solution
An orientation sensor is integrated into the access node or coupled with the antenna to detect and report the installed orientation, allowing for verification of correct installation and optimization of antenna patterns, using sensors like 3-axis accelerometers to provide accurate orientation data to the controller or client devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If access nodes are mounted in different orientations (wall mounted vs ceiling mounted), then installation flexibility is improved, but antenna orientation and polarization consistency deteriorates, leading to signal loss
Solution Approach 1:
The patent applies feedback by using orientation sensors (accelerometers or gyroscopes) to detect the actual mounting orientation of access nodes and providing this information back to the system. This feedback enables the system to verify correct installation, adjust antenna patterns, and ensure proper polarization alignment, thereby maintaining signal strength while allowing flexible installation orientations.
2Adaptability or versatility
If antenna orientation is changed from horizontal to vertical mounting, then installation adaptability is improved, but radiation pattern and polarization consistency deteriorates
Solution Approach 1:
The patent applies dynamics by making the antenna system adaptable to different mounting orientations through dynamic adjustment mechanisms. Orientation sensors enable the system to detect changes in mounting orientation and dynamically adjust antenna patterns and polarization settings to maintain consistent radiation characteristics regardless of whether the access node is wall-mounted or ceiling-mounted.
Solution Approach 2:
The patent applies parameter changes by modifying antenna radiation patterns and polarization settings based on detected mounting orientation. When the orientation sensor detects a vertical mounting, the system changes the antenna operating parameters (such as beam direction and polarization angle) to compensate for the orientation change, thereby maintaining consistent radiation patterns across different installation types.
3Productivity
If access nodes are linked together for point-to-point bridge, then network connectivity is improved, but orientation alignment requirement increases, leading to signal loss when polarization differs
Solution Approach 1:
The patent applies feedback in network connectivity by having orientation sensors in each access node report their actual orientation to the network controller. This feedback enables the controller to verify that linked nodes have matching polarization settings and to provide guidance for proper alignment, ensuring maximum signal strength in point-to-point bridges while reducing the precision requirements for manual orientation alignment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures proper antenna alignment and polarization, maximizing signal strength and coverage by enabling real-time monitoring and adjustment of antenna orientation, thereby improving network performance and installation accuracy.
Implementation Method 1
An orientation sensor, such as a 3-axis accelerometer, is integrated into the access node or mounted with the antenna to detect and report its orientation
Data Source
AI summary
Sensing installed orientation of an antenna or access node in a wireless digital network. According to one aspect of the invention, an orientation sensor such as a 2 or 3 axis accelerometer is provided in the access node. The orientation sensor may be attached to the access node housing, directly or through a substrate, attached to the main logic board of the access node, or may be mounted to an antenna. The orientation sensor may be mounted to the same substrate as is used to form an antenna, or may be mounted on a separate substrate. When associated with an antenna, such as the orientation sensor on the same substrate as the antenna, or co-located with the antenna such as inside the same package, the orientation of the antenna may be sensed. Orientation data on the access node and/or antenna may be transmitted to the controller for the access node, and/or to clients of the access node. This orientation information may be used for example to verify or validate installation and positioning, for example comparing the actual orientation to the desired orientation as stored in a database. The orientation information may be used in modeling and/or displaying access node coverage. In access nodes with selectable antennas, the orientation information may be used to switch antennas.