Centralized IAB Hop Resource Configuration for Conflict-Free Multiplexing
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Solution Overview
Problem
Existing IAB networks face low spectrum efficiency due to conservative scheduling of across-hop data transmissions, leading to conflicts between hops scheduled by different IAB nodes.
Innovation Solution
A centralized unit (CU) determines a multiplexing pattern between hops and sends multiplexing resource configuration information to IAB nodes to schedule data transmissions, using parameters like time domain, frequency domain, and power control to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conservative scheduling is used to avoid conflicts between hop A and hop B, then reliability is improved, but spectrum efficiency deteriorates
Solution Approach 1:
The patent introduces a centralized unit (CU) as an intermediary that coordinates resource allocation between parent IAB nodes and child IAB nodes. The CU receives resource requests from both hops, determines optimal resource configurations, and allocates resources to avoid conflicts while maximizing spectrum efficiency. This mediator resolves the contradiction by enabling intelligent arbitration between competing transmission demands.
Solution Approach 2:
The patent implements dynamic resource allocation where the scheduling configuration is not fixed but adaptively adjusted based on real-time network conditions, traffic demands, and interference levels. The system can dynamically switch between different resource allocation modes (e.g., time-division multiplexing, frequency-division multiplexing, spatial multiplexing) to optimize performance while avoiding conflicts.
2Productivity
If simultaneous data transmission over hop A and hop B is enabled, then spectrum efficiency is improved, but conflict between hops worsens
Solution Approach 1:
The patent segments the resource spectrum into multiple dimensions (time slots, frequency bands, spatial resources) and allocates different segments to different hops. By dividing the overall resource pool into manageable segments and assigning them strategically, the system enables simultaneous transmissions while avoiding resource conflicts through structured resource partitioning.
Solution Approach 2:
The patent transitions from single-dimensional resource allocation to multi-dimensional resource allocation, considering time, frequency, and spatial dimensions simultaneously. This dimensional expansion allows the system to find alternative resource paths that avoid conflicts - for example, if time-division causes conflicts, the system can switch to frequency-division or spatial multiplexing to achieve simultaneous transmissions without interference.
Data Source
AI summary
Embodiments of this application provide a resource configuration method, apparatus, and device, and pertain to the field of communications technologies. The method is applied to a centralized unit CU, where the CU communicates with a first IAB node and a second IAB node, the first IAB node and the second IAB node schedule data transmission over a first hop and a second hop of the first IAB node, respectively, and the method includes: determining a multiplexing pattern between the first hop and the second hop; and sending multiplexing resource configuration information for the first hop and/or the second hop, where the multiplexing resource configuration information is used to indicate a resource configuration for the multiplexing pattern.