Multi-Link Range Extension Using Duplicate Resource Units
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Solution Overview
Problem
Existing wireless networks face challenges in providing robustness and reliability, particularly for stations experiencing high attenuation, as they often prioritize throughput over these factors, leading to poor connection capabilities for devices like IoT devices mounted in challenging locations.
Innovation Solution
Implementing a method where data is transmitted in duplicate across multiple resource units (RUs) and/or radio bands to stations, allowing them to combine the data for improved signal-to-noise ratio (SNR) without increasing transmission power, thereby enhancing robustness and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted using a single resource unit to maintain high throughput, then productivity is improved, but reliability deteriorates for stations experiencing high attenuation
Solution Approach 1:
The patent applies the copying principle by transmitting duplicate copies of the same data across multiple resource units (RUs) and/or radio bands. Instead of sending a single transmission, the system creates redundant copies that travel through different frequency resources, allowing the receiving station to combine them for improved signal-to-noise ratio without sacrificing overall system throughput
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting transmission parameters such as selecting different resource units, changing radio bands, and modifying modulation and coding schemes based on channel conditions. The system changes transmission parameters to optimize both throughput and reliability by adapting to varying signal conditions across different frequency resources
2Reliability
If transmission power is increased to improve signal strength for distant stations, then reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies dimensionality change by expanding the transmission from a single resource dimension to multiple dimensions - specifically across multiple resource units within the same radio band and across different radio bands. This multi-dimensional approach allows the system to achieve diversity gain and improved reliability without increasing the power in any single dimension, effectively trading spatial/frequency diversity for power efficiency
3Reliability
If multiple resource units are used for data transmission to improve robustness, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the transmission task across multiple independent resource units and radio bands. Each RU and band can be processed relatively independently, with the receiving station combining the results. This segmentation allows for modular implementation and reduces the complexity burden on any single processing component while achieving diverse transmission paths
Data Source
AI summary
Methods and systems may include processes by which the reliability and robustness of a wireless network may be improved. In some implementations, a method may include selecting at least two resource units to be used for communications to a single client device; and transmitting data in duplicate via each of the at least two resource units to the client device such that the client device is able to combine the data from each of the at least two resource units into a single instance of the data. In some implementations, a method may include obtaining notification of one or more ranges of frequencies corresponding to a set of resource units to be avoided in a spectrum of available frequencies, and allocating resource units to a set of client devices that covers the available frequencies while excluding the set of resource units to be avoided.