Wireless Interference Coordination via Additive Signal Combination
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Solution Overview
Problem
Current wireless communication techniques are inefficient in managing interference, leading to reduced throughput and performance in wireless networks, as they either underutilize resources, impose power constraints, or increase decoding complexity.
Innovation Solution
The method involves receiving multiple transmissions, additively combining them to recover the original signal, and applying signal shaping processes, such as using complex scalar values or pseudo-random numbers, to suppress interference and improve reception performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple access schemes (TDMA, FDMA, CDMA, OFDMA) are used to avoid interfering situations, then interference is reduced, but resources cannot be reused between users leading to low throughput
Solution Approach 1:
The patent converts harmful interference into beneficial signal reinforcement by having multiple transmitters send the same signal simultaneously. The interference that would normally degrade performance is transformed into constructive addition at the intended receiver, improving throughput without requiring resource isolation schemes like TDMA or FDMA.
Solution Approach 2:
The patent merges transmissions from multiple transmitters that would traditionally be treated as separate interfering sources. By coordinating these transmissions to carry the same data, the system combines their effects constructively at the intended receiver, enabling resource reuse while maintaining signal integrity.
2Object-affected harmful factors
If interference reduction techniques are used to treat interference as background noise, then interference level is reduced, but transmit power constraints reduce throughput per user
Solution Approach 1:
Rather than suppressing interference through power constraints, the patent converts interfering transmissions into beneficial signals by coordinating them to carry identical data. This eliminates the need for power reduction while maintaining low effective interference through constructive combination at the receiver.
3Object-affected harmful factors
If successive interference cancellation is used to amplify and detect interference, then interference can be removed, but decoding complexity and error propagation increase
Solution Approach 1:
The patent eliminates the need for complex interference cancellation by converting interference into useful signal. Instead of detecting and removing interfering signals through successive cancellation, the system coordinates transmitters so that what would be interference becomes the desired signal itself, dramatically reducing decoding complexity.
Solution Approach 2:
The patent extracts the harmful interference component by coordinating transmissions to eliminate independent interfering signals. Rather than dealing with multiple independent interferers that require sequential cancellation, the system removes interference through coordination, leaving only the desired signal to be decoded.
4Object-affected harmful factors
If resources are not reused between users in multiple access schemes, then interference is avoided, but transmission efficiency is reduced
Solution Approach 1:
The patent enables resource reuse by converting the harmful effect of simultaneous transmissions into a beneficial mechanism. Multiple users can occupy the same time-frequency resources, and the coordinated transmissions transform potential interference into constructive signal addition, achieving high resource utilization without interference.
Data Source
AI summary
Methods and apparatus for interference coordination to improve transmission and reception performance within wireless networks. In one exemplary embodiment, a wireless transmitter transmits multiple transmissions over a determined time. The receiver receives the multiple transmissions and attempts to recover the transmitted signal. Because, the fading channel varies over time for each transmitter-receiver, by combining the received signals over multiple iterations, the signal of interest will be magnified, whereas interference effects will be suppressed.