Integrated Access and Backhaul Admission Control for Fair Capacity Allocation
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Solution Overview
Problem
In integrated access and backhaul networks, uneven user experience occurs due to varying spectrum needs for backhaul and access, leading to disparities in bandwidth and throughput across IAB devices, and existing capacity allocation schemes fail to ensure even user experience.
Innovation Solution
Implementing a user admission control service that accounts for current state information of each IAB device, including backhaul and access capacities, to determine whether to accept or reject new connections, and a capacity allocation service that calculates minimum performance metrics to evenly distribute resources across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing capacity allocation schemes are used, then network operations continue, but user experience remains uneven due to varying spectrum needs for backhaul and access
Solution Approach 1:
The patent changes the parameters of capacity allocation by introducing separate backhaul and access capacity thresholds, and by dynamically adjusting capacity distribution based on real-time network state information. This resolves the contradiction by transforming the fixed, unfair allocation into a dynamic, parameter-driven system that ensures both reliability and fairness.
Solution Approach 2:
The patent implements a feedback mechanism where the network device continuously monitors current state information of IAB devices and adjusts capacity allocation decisions accordingly. The admission control service uses this feedback to determine whether to accept or reject access requests, ensuring consistent user experience while maintaining fair bandwidth distribution.
2Reliability
If admission control is implemented to manage network capacity, then connection quality improves, but network complexity increases
Solution Approach 1:
The patent segments the admission control function into distinct services: an admission control service that evaluates connection requests and a capacity allocation service that manages resource distribution. This segmentation reduces system complexity by dividing the overall function into manageable, specialized components while maintaining connection quality through coordinated operation.
Solution Approach 2:
The patent performs preliminary capacity evaluation before admitting new connections. The admission control service assesses current network state and available capacity in advance, making informed decisions about connection acceptance. This preliminary action ensures connection quality while keeping the system relatively simple by avoiding complex real-time adjustments after connection establishment.
Data Source
AI summary
A method, a device, and a non-transitory storage medium are described in which an integrated access and backhaul service is provided. The integrated access and backhaul service may include an admission control service that manages admission control based on access and backhaul capacities of an integrated access and backhaul network such that access and backhaul capacities at any integrated access and backhaul device are not exceeded. The integrated access and backhaul service may include a capacity allocation service. The capacity allocation service may provision scheduling and resource allocation to support a performance metric and/or other criteria at an integrated access and backhaul device based on access and backhaul demands and capacities.