Beam Failure Detection in Wireless Backhaul Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Future wireless communications networks face challenges in supporting a wide range of devices with varying data traffic profiles, including reduced complexity devices and high-resolution video, due to potential capacity crunches and instability in backhaul links between infrastructure equipment and the core network.
Innovation Solution
The method involves periodically transmitting beams of radio signals in different spatial directions and times to communicate between infrastructure equipment, with mechanisms for detecting beam failures and transmitting notifications to child nodes, allowing for dynamic resource allocation and route adjustments to ensure stable and efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless backhaul links use periodic beam transmission to support diverse devices and data traffic profiles, then network versatility and device compatibility improve, but link stability and reliability deteriorate due to beam failures
Solution Approach 1:
The system performs preliminary actions by detecting beam failure conditions before complete link collapse occurs. The parent node continuously monitors beam quality metrics and identifies degradation trends, allowing proactive intervention through beam failure notifications and recovery procedures before the communication link completely fails, thus maintaining reliability while supporting versatile device connectivity
Solution Approach 2:
The system implements feedback mechanisms where the parent node monitors beam transmission quality and provides feedback through beam failure notifications to child nodes. This feedback loop enables dynamic adjustment of communication parameters, beam selection, and resource allocation based on real-time link conditions, resolving the contradiction between maintaining stable links and supporting diverse traffic profiles by adapting to changing network conditions
2Productivity
If the network dynamically adjusts resource allocation and routes to handle diverse data traffic profiles, then productivity and data transmission efficiency improve, but system complexity increases
Solution Approach 1:
The system segments the complex task of resource allocation and route management into distinct functional components: beam transmission, beam failure detection, notification generation, and recovery procedures. Each infrastructure node (parent and child) has clearly defined responsibilities, with the parent node handling monitoring and notification functions while child nodes respond based on received notifications. This segmentation reduces system complexity by distributing functions across multiple nodes rather than requiring centralized complex control
Solution Approach 2:
The system enables self-service through automated beam failure detection and notification mechanisms. The parent node autonomously monitors beam conditions, detects failures, and sends notifications to child nodes without requiring manual intervention or complex centralized coordination. Child nodes automatically respond to notifications by adjusting their communications, enabling the system to dynamically adapt to traffic demands and maintain high productivity through self-managing infrastructure nodes
Data Source
AI summary
A method of operating a first infrastructure equipment is provided. The method comprises communicating, signals representing data with a second infrastructure equipment over a first communications path optionally via one or more others of the infrastructure equipment acting as relay nodes, detecting that one or more of the beams used for communicating signals with a third infrastructure equipment satisfy a beam failure condition, determining, in response to detecting that the one or more of the beams satisfy the beam failure condition, that a beam failure notification is to be transmitted, the beam failure notification indicating that the one or more of the beams satisfy the beam failure condition, and transmitting the beam failure notification.