Wire-Based Spatial Multiplexing for Wireless Interference Mitigation
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Solution Overview
Problem
Wireless communication with mobile devices is adversely affected by signal fading, multi-path, and electromagnetic wave propagation through walls, necessitating methods and systems to mitigate interference and improve communication efficiency.
Innovation Solution
The use of spatial multiplexing in conjunction with a wire-based medium, where input streams are converted into signals occupying different frequency ranges, transported over a wire-based medium, shifted to a single wireless frequency range, and transmitted via antennas, thereby achieving successful decoding of data streams while minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wireless communication is used to improve mobility and coverage, then communication reach is improved, but signal quality deteriorates due to fading, multi-path, and wall propagation effects
Solution Approach 1:
The patent segments the communication path by introducing wire-based intermediaries (power line communication channels) that divide the wireless transmission into wired and wireless segments. This allows reliable data transport through the wire medium while maintaining wireless coverage extension, effectively segmenting the communication architecture to overcome the trade-off between coverage area and signal quality.
2Productivity
If spatial multiplexing is used to increase data throughput, then productivity is improved, but interference from wire-based medium deteriorates signal reliability
Solution Approach 1:
The patent uses the wire-based medium as an intermediary that carries multiple spatially multiplexed streams. The wire medium acts as a controlled transmission channel that can simultaneously transport multiple independent data streams with different frequency characteristics, allowing spatial multiplexing to achieve high throughput while the wire-based infrastructure provides isolation from wireless interference.
Solution Approach 2:
The patent changes the frequency parameter of data streams by modulating them onto different carrier frequencies before transmission over the wire-based medium. This frequency division allows multiple streams to coexist on the same physical wire medium without interfering with each other, enabling spatial multiplexing to achieve high productivity while maintaining signal integrity through frequency parameter differentiation.
3Quantity of substance
If multiple streams are transported over wire-based medium to achieve spatial multiplexing, then data capacity is improved, but complexity of signal processing increases
Solution Approach 1:
The patent segments the signal processing function into distinct modules: modulation at the transmitter, transmission over the wire medium, and demodulation at the receiver. Each spatial stream is processed independently through these segmented stages, allowing multiple data streams to be handled systematically without overwhelming complexity. The segmentation enables scalable processing where each stream follows the same processing pipeline.
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 effectively mitigates wire-based interferences, allowing for successful decoding of multiple data streams and improving communication efficiency across multiple spatial locations by utilizing spatial multiplexing and wireless frame aggregation over a wire-based medium.
Implementation Method 1
converting a plurality of input streams into a respective plurality of signals occupying different frequency ranges
Implementation Method 2
transporting the plurality of input signals via a wire-based medium respectively to a plurality of mixers
Implementation Method 3
shifting by each of the plurality of mixers the respective one of the signals from the respective frequency range to a single wireless frequency range
Implementation Method 4
transmitting wirelessly the plurality of output signals respectively via a plurality of antennas
Data Source
AI summary
Systems and methods for: (i) using spatial multiplexing to mitigate wire-based interferences, (ii) using spatial multiplexing in conjunction with a wire-based medium, (iii) re-using a plurality of streams associated with spatial multiplexing and transported over a wire-based medium, (iv) preventing a first wireless transmission from interfering with a second wireless transmission both transported over a wire-based medium, (v) covering wirelessly multiple spatial locations via a wire-based medium using grouping of streams associated with spatial multiplexing, (vi) achieving spatial-division-multiple-access via a wire-based medium by grouping of streams in conjunction with a plurality of spatial locations, (vii) using wireless frame aggregation to mitigate wire-based interferences, and (viii) transporting a plurality of streams associated with spatial multiplexing over a wire-based medium together with corresponding mixer signals.