Passive Reflector Coverage Planning for Mobile Network White Spots
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Solution Overview
Problem
Existing mobile telecommunications networks struggle to optimally manage and utilize reflection for coverage in locations with no or insufficient direct line-of-sight, leading to 'white spots' where additional network infrastructure is often required, but this approach is inefficient and costly.
Innovation Solution
Optimize existing reflection structures by adjusting their angle and surface material to better direct antenna beams to these 'white spots' using reflective films or metal-coated surfaces, and employ beamforming or curved surfaces to enhance signal reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional network infrastructure (small cells or repeaters) is implemented to cover white spots, then coverage in challenging areas is improved, but network investment and device complexity increase
Solution Approach 1:
The patent introduces a passive reflector as an intermediary element between the antenna and the white spot area. This reflector redirects the antenna beam to reach challenging areas without requiring additional active network infrastructure like small cells or repeaters, thus maintaining coverage reliability while avoiding increased device complexity and investment
Solution Approach 2:
The patent creates a virtual coverage path by using a passive reflector to copy and redirect the antenna beam. Instead of deploying physical additional infrastructure, the solution uses electromagnetic wave reflection to create an alternative signal path that reaches white spot areas, effectively copying the coverage function without the associated hardware complexity
2Ease of manufacture
If passive reflectors are used to direct antenna beams to white spots, then network investment is reduced, but control and optimization of reflection coverage becomes difficult
Solution Approach 1:
The patent employs beamforming technology with electronic phase shifters to dynamically control the antenna beam direction and the passive reflector's effective reflection characteristics. This allows the system to adaptively optimize coverage in white spot areas without requiring physical repositioning or manual adjustment of the passive reflector structure, maintaining ease of operation while reducing network investment
Solution Approach 2:
The patent changes the electrical parameters of the antenna system through beamforming control, adjusting phase and amplitude parameters to steer the beam and optimize reflection coverage. This parameter-based control approach provides flexible optimization of passive reflector coverage without requiring physical modifications or additional infrastructure, balancing ease of manufacture with ease of operation
3Productivity
If reflection structures are optimized by adjusting angle and surface material, then coverage efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs a curved or spherical passive reflector surface instead of a flat surface. This curvature design provides more tolerant angular reflection characteristics, meaning that smaller deviations in installation angle or surface positioning result in less coverage degradation. The curved surface naturally focuses or distributes reflected energy more robustly, improving coverage efficiency while reducing the stringency of manufacturing precision requirements
Solution Approach 2:
The patent optimizes the passive reflector's surface parameters (curvature radius, surface roughness, material properties) to achieve a balance between reflection efficiency and manufacturing feasibility. By carefully selecting and tuning these parameters, the system achieves high coverage efficiency with realistic manufacturing precision tolerances, avoiding overly stringent requirements that would increase costs
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
Enhances coverage in challenging areas without additional infrastructure, reducing costs and environmental impact while improving network efficiency.
Implementation Method 1
a reflection surface is identified to direct an antenna beam from the antenna to the white spot
Data Source
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AI summary
The disclosure relates to a method for planning coverage in a mobile telecommunications network having at least one antenna. The method comprises identifying a white spot having no or insufficient antenna coverage and identifying an existing reflection structure being covered by the at least one antenna. A surface for the reflection structure is identified, wherein the surface is adapted to direct an antenna beam from the at least one antenna to the white spot.