Wireless Backhaul Link Recovery via Proactive Neighbor Search
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-frequency wireless backhaul links in 5G networks are prone to breakage due to signal quality degradation, posing challenges in maintaining continuous connectivity in dense deployments.
Innovation Solution
A method and device for establishing a wireless backhaul link by acquiring a link reselection threshold from a donor base station, searching for neighboring donor base stations with better signal quality, and initiating a random access request to establish a new link before the current link disconnects, thereby preventing link breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless backhaul links are used in 5G networks, then spectrum efficiency and deployment flexibility are improved, but link stability deteriorates due to signal quality degradation
Solution Approach 1:
The patent applies preliminary action by having the small cell continuously measure signal quality of the wireless backhaul link and proactively search for neighboring donor base stations before link breakage occurs. The threshold for initiating link restoration is set in advance, and the system prepares alternative links beforehand, allowing continuous operation without interruption when the current link degrades.
Solution Approach 2:
The patent implements feedback mechanisms where the small cell continuously monitors the signal quality of the wireless backhaul link and compares it against predefined thresholds. Based on this feedback, the system dynamically adjusts its behavior by initiating link restoration procedures when degradation is detected, thereby maintaining link stability while preserving the benefits of wireless backhaul.
2Reliability
If traditional optical fiber backhaul is deployed, then link stability is improved, but device complexity and deployment cost increase due to extensive fiber infrastructure requirements
Solution Approach 1:
The patent replaces the mechanical fiber infrastructure with wireless backhaul technology. Instead of relying on physical fiber connections that require complex deployment and maintenance, the system uses wireless communication links between small cells and donor base stations, significantly reducing infrastructure complexity while maintaining acceptable link stability through proactive link management.
3Adaptability or versatility
If wireless backhaul links are used in dense 5G deployments, then deployment flexibility is improved, but link stability deteriorates due to increased interference and signal blocking
Solution Approach 1:
The patent applies dynamics by making the backhaul link configuration adaptive rather than static. The small cell continuously monitors signal quality and dynamically switches between different donor base stations based on real-time conditions. This dynamic approach allows the system to maintain flexibility in dense deployments while improving stability by selecting optimal links as conditions change.
Solution Approach 2:
In dense deployments, the patent uses preliminary action by pre-identifying and measuring multiple neighboring donor base stations before the current link fails. The system prepares alternative routes in advance and可以快速切换， thereby maintaining deployment flexibility in dense areas while preventing link breakage through proactive preparation of backup connections.
Data Source
AI summary
The present disclosure relates to a method and device for recovering and establishing a wireless backhaul link, a NR wireless backhaul base station, a NR host station, and a computer readable storage medium. The method for recovering a wireless backhaul link comprises: measuring the signal quality of a first wireless backhaul link between a first NR host station being accessed by a NR wireless backhaul base station and the NR wireless backhaul base station; if the signal quality of the first wireless backhaul link is less than a link reselection threshold corresponding to the NR wireless backhaul base station, beginning a new search for an adjacent NR host station; and if a time duration, in which the signal quality of a second wireless backhaul link between a found second NR host station and the NR wireless backhaul base station is continuously greater than a first threshold, exceeds a first time duration, then initiating random access with respect to the second NR host station, and establishing a wireless backhaul link with the second NR host station. In the present embodiment, a better wireless backhaul link is found before a current wireless backhaul link is broken, thereby avoiding an interrupted wireless backhaul link.