IAB Bandwidth Allocation via Channel Quality Scoring
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Solution Overview
Problem
Wireless telecommunication networks face challenges in efficiently managing bandwidth allocation across Integrated Access Backhaul (IAB) nodes, leading to network congestion and suboptimal traffic prioritization, especially in scenarios where channel quality varies across links.
Innovation Solution
An Integrated Access Backhaul Allocation System (IAS) computes maximum bandwidth allocations for IAB and access links based on throughput and channel quality scores, using weights to determine optimal bandwidth distribution and propagate these allocations to IAB nodes, ensuring efficient traffic management and congestion alleviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bandwidth is allocated uniformly across all IAB links, then implementation is simple, but network congestion occurs and traffic prioritization is suboptimal
Solution Approach 1:
The patent implements differentiated bandwidth allocation where each IAB link receives bandwidth based on its specific channel quality score rather than uniform distribution. The system calculates channel quality scores for individual links and allocates bandwidth proportionally, ensuring that links with better channel conditions receive more bandwidth while maintaining implementation feasibility through automated scoring mechanisms.
2Reliability
If maximum bandwidth is allocated to all links, then individual link performance is maximized, but overall network congestion increases
Solution Approach 1:
The patent applies partial action by allocating bandwidth proportional to channel quality scores rather than maximum bandwidth to all links. The system calculates a total channel quality score across all links and allocates each link's bandwidth as a fraction of the total, ensuring that the sum of allocated bandwidths does not exceed available capacity, thus preventing congestion while maintaining reliable performance for high-quality links.
3Productivity
If dynamic bandwidth allocation based on channel quality is implemented, then traffic prioritization is optimized, but system complexity increases
Solution Approach 1:
The patent implements self-service through automated channel quality scoring and bandwidth allocation mechanisms. The system automatically calculates channel quality scores for each IAB link based on observed performance metrics, determines proportional bandwidth allocations, and enforces these allocations without requiring manual configuration or complex centralized control, thereby optimizing traffic prioritization while maintaining manageable system complexity.
Data Source
AI summary
A system described herein may provide a technique for the determination of threshold or maximum bandwidths for links between nodes and/or User Equipment (“UEs”) in an Integrated Access Backhaul system. The maximum bandwidth for a given link may be a function of one or more of: (a) an amount of throughput associated with the link over a given time period, (b) an amount of system-wide throughput associated with the same type of link over the given time period, (c) an amount of throughput over the given time period for links of the same type that are associated with at least a threshold measure of channel quality, (d) a total system bandwidth or capacity, and (e) a total amount of throughput associated with the nodes over the given time period.