Local Interference Management in Integrated Access Backhaul Networks
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Solution Overview
Problem
Integrated access backhaul networks face interference issues between neighboring base stations, which degrade communication performance and consume processing and signaling resources in identifying and remedying these interferences.
Innovation Solution
Implementing a method where child nodes in an integrated access backhaul network share communication information, such as scheduling plans, with parent nodes via wireless backhaul links, allowing parent nodes to adjust their communications to avoid interference, thereby coordinating transmission schedules and reducing interference across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base stations use directional communications and beamforming to reduce interference, then communication performance improves, but neighboring base stations still experience intercell interference that degrades performance
Solution Approach 1:
The patent applies preliminary action by having child nodes transmit communication information (scheduling plans, configurations) to parent nodes before actual communications occur. This advance information sharing enables parent nodes to pre-adjust their transmissions to avoid interfering with child nodes, and allows the system to identify and prevent intercell interference before it degrades communication performance
Solution Approach 2:
The patent implements feedback mechanisms where child nodes provide communication information back to parent nodes through wireless backhaul links. This feedback loop enables continuous monitoring and adjustment of transmission schedules, allowing the system to respond to actual communication conditions and refine interference avoidance strategies in real-time
2Reliability
If the network identifies and remediates interference issues, then communication quality improves, but processing and signaling resources are consumed
Solution Approach 1:
The patent reduces the need for resource-intensive interference remediation by taking preliminary action to prevent interference in the first place. By sharing communication information advance and adjusting transmission schedules proactively, the system avoids the need for complex real-time interference detection and correction processes, thereby conserving processing and signaling resources
Solution Approach 2:
The patent enables the network to manage interference through self-service mechanisms where child nodes automatically transmit their communication information to parent nodes, and parent nodes autonomously adjust their transmissions to avoid interference. This self-managing approach eliminates the need for external interference management systems and reduces overall processing overhead
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a child node of a parent node in an integrated access backhaul (IAB) network may determine communication information that includes one or more of a schedule or a configuration for a communication to be transmitted by the child node. The child node may be an IAB node, and the parent node may be an IAB donor or an intervening IAB node between the IAB node and an IAB donor. The child node may transmit the communication information to the parent node via a wireless backhaul link between the child node and the parent node. Numerous other aspects are provided.