Dynamic Beam Group Cycling for Wireless Spectrum Efficiency
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Solution Overview
Problem
Traditional wireless communication systems suffer from low average spectrum efficiency due to poor channel quality and the limitations of existing modulation techniques, leading to inefficient use of RF spectrum and increased costs as demand for data transmission increases.
Innovation Solution
A new base station architecture with multiple, agile beam patterns and advanced channel matrix processing, combined with mobile scheduling capabilities, to dynamically adjust and optimize beam formation and communication links, enhancing spatial filtering and radiation pattern flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional modulation techniques are used, then device complexity is reduced, but average spectrum efficiency deteriorates
Solution Approach 1:
The patent implements dynamic beam formation and spatial scanning at the base station, allowing the system to adaptively adjust beam patterns and directions based on mobile station locations and channel conditions. This dynamic spatial processing enables the system to maintain high signal quality and spectrum efficiency without requiring complex modulation schemes at mobile devices.
Solution Approach 2:
The patent introduces spatial dimension processing through multiple antenna arrays, creating distinct beam patterns in different spatial directions. By utilizing the spatial domain as an additional dimension for signal processing, the system achieves high spectrum efficiency through spatial filtering and beamforming rather than through complex temporal modulation techniques.
2Productivity
If peak spectrum efficiency is optimized for all transmissions, then data transfer capacity increases, but system cost and power consumption increase
Solution Approach 1:
The base station performs all complex spatial processing, beamforming, and signal optimization functions independently, allowing mobile devices to use simpler, lower-power receivers. The mobile stations benefit from the base station's sophisticated processing without having to replicate it, thereby reducing their power consumption while still achieving high data transfer capacity.
Solution Approach 2:
The patent combines multiple base station antenna arrays into a coordinated system that jointly processes signals for multiple mobile stations. By merging the processing capabilities at the base station and distributing simplified receivers to mobiles, the system achieves high capacity while minimizing mobile power requirements.
3Ease of manufacture
If simple modulation techniques are used, then ease of manufacture is improved, but average spectrum efficiency deteriorates
Solution Approach 1:
The system uses dynamic beamforming and spatial scanning techniques at the base station to achieve high spectrum efficiency without requiring complex modulation schemes. The base station adaptively adjusts beam patterns and directions based on real-time channel conditions, providing high efficiency while maintaining implementation simplicity through centralized processing.
Solution Approach 2:
The patent replaces complex modulation-based signal processing with spatial-domain beamforming and filtering. By substituting temporal modulation complexity with spatial processing, the system achieves high spectrum efficiency while maintaining ease of manufacture, as the spatial processing can be implemented using standard antenna arrays and signal combining techniques.
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
This approach significantly increases average spectrum efficiency, potentially by a factor of ten, thereby enhancing wireless system capacity while maintaining a low-cost network upgrade.
Implementation Method 1
defining a plurality of independent spot beams to be generated by an antenna array, each spot beam of the plurality of independent spot beams aimed in a different direction and intersecting a different region of a planar finite area in space
Implementation Method 2
generating a static beam covering an entire cellular sector area... generating, by the beam-forming device, a static beam covering an entire cellular sector area
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
Techniques for achieving high average spectrum efficiency in a wireless system are disclosed. In one particular embodiment, the techniques may be realized as a method of communicating with a wireless station comprising defining a plurality of beams to be generated by a beam-forming device, defining a set of beam groups wherein each beam group is a different subset of beams of the plurality of beams; repeatedly cycling through the set of beam groups by sequentially generating each group of beams among the set of beam groups; identifying a beam group among the set of beam groups which yields a best communication link with a wireless station; and scheduling communications with the wireless station to occur via the identified beam group when the identified beam group is being generated.