Intelligent Reflecting Surface Path Selection for Wireless Interference
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Solution Overview
Problem
Wireless communication systems face challenges in complex and dynamic environments where signal attenuation or blockage undermines channel measuring and reporting mechanisms, necessitating improvements in wireless communication technologies, especially in unlicensed or shared spectra.
Innovation Solution
The use of intelligent reflecting surfaces (IRS) to provide alternative communication paths by monitoring and selecting candidate paths based on criteria such as channel measurements and interference levels, allowing for improved channel access and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional channel measuring and reporting mechanisms are used in complex and dynamic environments, then the system can operate with existing infrastructure, but signal attenuation or blockage undermines the effectiveness of these mechanisms
Solution Approach 1:
The patent introduces intelligent reflecting surfaces (IRS) as intermediary elements to create alternative communication paths. The IRS reflects signals between transmitters and receivers, providing a mediator that bypasses direct line-of-sight requirements and mitigates the harmful effects of signal attenuation and blockage in complex environments.
2Reliability
If multiple candidate paths including IRS paths are monitored and selected, then communication reliability is improved through reduced interference, but system complexity increases due to path monitoring and selection mechanisms
Solution Approach 1:
The patent implements feedback mechanisms where the system monitors multiple candidate paths including IRS-reflected paths, measures their properties (such as signal quality and interference levels), and uses this feedback to dynamically select the optimal communication path. This feedback-driven approach improves communication reliability by adapting to changing channel conditions while managing system complexity through structured selection criteria.
3Productivity
If IRS-provided paths are used for channel access, then interference is reduced and throughput is increased, but latency is introduced due to the additional path monitoring and selection process
Solution Approach 1:
The patent applies preliminary action by pre-monitoring and evaluating candidate paths including IRS paths before actual communication is needed. The system proactively identifies and selects optimal paths in advance, storing this information for rapid deployment when communication is required. This preliminary evaluation reduces the latency penalty by having path selection information ready before transmission begins.
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 enhances wireless communication performance by reducing latency and increasing throughput through the use of IRS-provided paths with reduced interference, enabling effective communication in unlicensed spectra.
Implementation Method 1
candidate paths include one or more paths through an intelligent reflecting surface
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for channel access using an intelligent reflecting surface (IRS). A method that may be performed by a network entity includes monitoring candidate paths for channel access, wherein the candidate paths include one or more paths through an intelligent reflecting surface; determining at least one path among the candidate paths for communications with a first wireless node based at least in part on one or more criteria associated with the candidate paths and obtained from monitoring the candidate paths; and communicating with the first wireless node via the at least one path.