Coordinated Configured Scheduling for IAB Backhaul Links
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Solution Overview
Problem
In Integrated Access Backhaul (IAB) networks, configuring Scheduling (CS) parameters for each backhaul link individually without coordination leads to low spectral efficiency and Quality of Service (QoS).
Innovation Solution
A method for coordinating CS among multiple backhaul links by determining and transmitting CS-related parameters, such as target bitrate, periodicity, and HARQ processes, across network nodes to optimize resource allocation and scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If CS parameters are configured individually for each backhaul link without coordination, then configuration simplicity is maintained, but spectral efficiency and QoS deteriorate
Solution Approach 1:
The patent merges the configuration of CS parameters across multiple backhaul links by introducing a coordinating network node that centralizes the determination and allocation of CS parameters. This coordination mechanism combines previously independent link configurations into a unified system, improving spectral efficiency and QoS while maintaining reasonable configuration complexity through automated coordination procedures.
2Device complexity
If CS parameters are configured individually for each backhaul link without coordination, then configuration complexity is reduced, but QoS deteriorates
Solution Approach 1:
The patent introduces a coordinating network node as an intermediary that manages CS parameter configuration across multiple backhaul links. This intermediary entity receives information from various sources, determines appropriate CS parameters, and distributes them to relevant network nodes, thereby improving QoS while managing configuration complexity through a structured coordination process.
3Productivity
If CS parameters are coordinated across multiple backhaul links, then spectral efficiency and QoS improve, but configuration complexity increases
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting CS parameters (such as periodicity, time-frequency resources, and MCS) based on coordinated information from multiple backhaul links. The coordinating network node modifies these parameters optimally across links, achieving improved spectral efficiency while managing complexity through systematic parameter optimization rather than ad-hoc configuration.
4Productivity
If CS parameters are coordinated across multiple backhaul links, then resource allocation efficiency improves, but information processing requirements increase
Solution Approach 1:
The patent extracts and centralizes the information processing function for CS parameter coordination in a dedicated coordinating network node. This node collects necessary information from multiple backhaul links, processes it to determine optimal CS parameters, and distributes the results. This extraction of the coordination function improves resource allocation efficiency while managing information processing requirements through specialized processing at the coordinating node.
Data Source
AI summary
The present disclosure provides a method (200) in a network node for coordination of Configured Scheduling, CS, among a plurality of backhaul links. The method (200) includes, for each of the plurality of backhaul links: determining (210) at least one CS-related parameter; and transmitting (220) to a scheduling IAB node of that backhaul link the at least one CS-related parameter.