Adaptive Phase-Changing Device for Backhaul Signal Reliability
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Solution Overview
Problem
Higher frequency wireless communication systems, such as 5G, face challenges with signal distortions due to multipath fading and path loss, particularly in integrated access backhaul links, which affect data capacity and reliability.
Innovation Solution
The implementation of an adaptive phase-changing device (APD) with a Reconfigurable Intelligent Surface (RIS) that modifies signal properties to mitigate channel impairments by routing wireless signals around obstructions, improving signal quality and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher frequency ranges (above-6 GHz band, THz band) are used to increase data capacity, then bandwidth and data capacity are improved, but signal reliability deteriorates due to multipath fading and path loss
Solution Approach 1:
The patent introduces an adaptive phase-changing device (APD) as an intermediary component in the wireless communication path between donor base station and node base station. The APD includes a reconfigurable intelligent surface that can dynamically adjust phase and amplitude of electromagnetic waves to compensate for multipath fading and path loss, thereby maintaining signal reliability while utilizing higher frequency bands for increased data capacity
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the phase and amplitude characteristics of the APD surface elements based on channel conditions. The system monitors signal quality metrics and modifies the phase-shift values and amplitude ratios of individual surface elements to optimize signal transmission, enabling reliable communication at higher frequencies
2Reliability
If an adaptive phase-changing device is added to compensate for signal distortions, then signal reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the APD into multiple independent surface elements or unit cells arranged in a grid pattern. Each segment can be independently controlled and configured, allowing the system to manage complexity through modular control. The reconfigurable intelligent surface is divided into multiple controllable elements that can be individually adjusted to compensate for channel distortions
Solution Approach 2:
The patent implements dynamics by making the APD configuration time-varying and adaptive. The surface elements can dynamically change their phase and amplitude characteristics in response to changing channel conditions, allowing the system to maintain optimal performance while managing complexity through time-adaptive control rather than requiring complex static configurations
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 data rates, spectral efficiency, and communication reliability in wireless networks by compensating for signal distortions and channel impairments in integrated access backhaul links.
Implementation Method 1
an adaptive phase-changing device (APD) with a Reconfigurable Intelligent Surface (RIS) that modifies signal properties
Implementation Method 2
routing wireless signals around obstructions
Data Source
AI summary
Techniques and apparatuses are described for integrated access backhaul with an adaptive phase-changing device (APD) are described. In aspects, a donor base station determines to include an APD in a communication path for the wireless backhaul link with a node base station and apportions APD access to the APD for the node base station. The donor base station then communicates with the node base station using the surface of the APD and based on the apportioned APD-access by using the surface to exchange wireless signals with the donor base station.