Centralized Scheduler for Wireless Resource Partitioning
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Solution Overview
Problem
In wireless communication systems, especially those using Integrated Access and Backhaul (IAB) networks, resource allocation between access and backhaul links is complex due to considerations like interference and traffic variability, leading to suboptimal performance and potential bottlenecks in resource utilization.
Innovation Solution
Implementing a method where a centralized scheduler allocates specific time-frequency resources for either access or backhaul links, allowing for repurposing of resources based on traffic demands, ensuring a minimum performance level by dynamically adjusting resource allocation between access and backhaul links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate time-frequency resources are allocated for access and backhaul links, then guaranteed minimum performance is ensured for both link types, but resource utilization efficiency decreases due to potential idle resources
Solution Approach 1:
The patent implements dynamic resource allocation where the centralized scheduler can repurpose time-frequency resources from access links to backhaul links based on real-time traffic conditions. This dynamic adjustment allows the system to maintain guaranteed minimum performance for both link types while improving overall resource utilization efficiency by adapting to changing network demands.
2Productivity
If time-frequency resources are repurposed from access to backhaul communications, then backhaul traffic capacity increases, but access link performance may deteriorate
Solution Approach 1:
The patent reserves a portion of time-frequency resources specifically for access link communications, ensuring that access link performance is maintained even when backhaul traffic capacity needs to be increased. This preliminary reservation of resources prevents complete repurposing of all resources, thereby protecting access link performance while still allowing backhaul capacity enhancement through selective resource reallocation.
Solution Approach 2:
The centralized scheduler continuously monitors traffic conditions and link performance, using this feedback to dynamically adjust resource allocation. When backhaul traffic capacity is needed, the scheduler repurposes resources while ensuring access links maintain minimum performance requirements. This feedback mechanism prevents access link performance deterioration by adapting resource allocation to actual network conditions.
3Productivity
If centralized scheduling is used for resource allocation, then coordinated resource management is achieved, but system complexity increases
Solution Approach 1:
The patent introduces a centralized scheduler as an intermediary component that manages resource allocation between access and backhaul links. This dedicated scheduling entity coordinates resource management, handling the complexity centrally rather than distributing it throughout the network. The centralized scheduler processes traffic conditions, determines optimal resource allocation, and implements coordinated management while maintaining manageable system complexity through a single responsible component.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described that provide for partitioning of time-frequency resources for access and backhaul links separately. A centralized scheduler in a centralized system or a set of access nodes (ANs) in a distributed system may allocate a portion of a set of resources for a given link type (e.g., access or backhaul). In some cases, multiple ANs may exchange reports or measurements to determine the resources to allocate to a given link type. The allocated resources may be repurposed for use by a different link type (e.g., access resources may be repurposed and used for backhaul resources) in order to account for varying traffic conditions.