IAB Node Resource Allocation Conflict Resolution
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Solution Overview
Problem
Integrated Access Backhaul (IAB) networks face challenges in efficient resource allocation and signaling due to discrepancies between semi-static and dynamic resource allocation, leading to conflicts and reduced control channel payload flexibility.
Innovation Solution
The method involves a parent IAB node detecting conflicts between resources at a Mobile Terminal (MT) and a Distributed Unit (DU) of a child IAB node, updating and remapping time-domain allocation configurations, and sending indications to adjust resource usage, thereby improving resource sharing and scheduling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If semi-static resource allocation is used in IAB networks, then resource allocation is simplified, but resource allocation flexibility and conflict resolution capability deteriorate
Solution Approach 1:
The patent implements dynamic resource allocation by allowing the parent IAB node to detect conflicts between MT and DU resources and dynamically adjust time-domain allocation configurations. The system transitions from fixed semi-static allocation to a dynamic mechanism where resource allocations can be modified in real-time based on detected conflicts, improving flexibility while maintaining operational simplicity through automated conflict detection and resolution.
2Adaptability or versatility
If dynamic resource allocation is implemented to improve flexibility, then resource allocation flexibility improves, but system complexity and signaling overhead increase
Solution Approach 1:
The patent enables self-service by implementing automated conflict detection and resolution mechanisms at the parent IAB node. The system automatically detects conflicts between MT and DU resources, updates time-domain allocation configurations, and sends indications to child nodes without requiring complex manual intervention or extensive signaling protocols, thereby reducing system complexity while maintaining high flexibility.
3Adaptability or versatility
If conflict detection and resolution mechanisms are added, then resource allocation flexibility improves, but control channel payload size and processing overhead increase
Solution Approach 1:
The patent extracts the conflict detection and resolution functionality into a dedicated mechanism at the parent IAB node, separating it from the general control channel operations. By extracting these functions, the system can handle conflict resolution efficiently without bloating the control channel payload, as the detection and resolution logic operates independently based on pre-configured resource information.
4Productivity
If time-domain allocation configurations are updated dynamically, then resource sharing efficiency improves, but signaling frequency and processing load increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring time-domain allocation configurations and resource patterns before conflicts occur. When conflicts are detected, the system can quickly apply pre-planned resolution strategies and update configurations without extensive real-time processing, thereby improving resource sharing efficiency while minimizing signaling processing time and overhead.
Data Source
AI summary
Accordingly embodiments herein achieve signaling method and system (2000) for provisioning signalling in an Integrated Access Backhaul (IAB) network (1000). The method includes providing a set of modifications in uplink and downlink signaling for an IAB node (100). The modifications either help to reduce the control channel payload or enable more flexible signaling of resources, improve efficient control channel scheduling and also avoid conflicts that might arise due to discrepancies between semi static and dynamic resource allocation.