Link Adaptation for Dedicated and Shared Resources
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Solution Overview
Problem
In wireless networks using mmW-RAT, running a single link adaptation (LA) process for radio links allocated with different types of resources, such as dedicated and shared resources, leads to suboptimal performance due to interference and varying reliability, resulting in reduced transmission rates.
Innovation Solution
Implementing separate LA instances for different types of resources to adapt modulation and coding schemes independently, allowing for resource-type specific link adaptation, which enables independent MCS selections for dedicated and shared resources, thereby improving link performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single link adaptation process is used for radio links allocated with different types of resources, then the system complexity is reduced, but the transmission rate and link performance deteriorate due to interference and varying reliability
Solution Approach 1:
The patent divides the link adaptation process into separate LA instances for different resource types (dedicated resources and shared resources). Each LA instance independently adapts MCS parameters for its specific resource type, allowing optimized transmission rates without increasing overall system complexity. This segmentation resolves the contradiction by enabling specialized adaptation while maintaining manageable complexity through modular architecture.
Solution Approach 2:
The patent applies different link adaptation strategies tailored to specific resource types. Dedicated resources receive LA treatment optimized for reliability, while shared resources receive LA treatment optimized for throughput and interference management. This local quality approach allows each resource type to operate at its optimal performance point, resolving the contradiction between simplicity and performance by applying appropriate complexity only where needed.
2Productivity
If separate link adaptation instances are implemented for different resource types, then the transmission rate and link performance are improved, but the system complexity increases
Solution Approach 1:
The patent implements separate LA instances for dedicated and shared resources, with each instance maintaining independent MCS adaptation logic. This segmentation improves transmission rate by optimizing each resource type independently while managing complexity through clear separation of concerns. The modular structure allows each LA instance to remain relatively simple while the system as a whole achieves superior performance.
Solution Approach 2:
The patent creates a universal link adaptation framework that can handle multiple resource types through standardized LA instances. Each LA instance follows a common structure and process flow, making them multi-functional yet specialized. This universality reduces the complexity increase by providing a template that can be replicated for different resource types without requiring entirely separate complex systems.
3Device complexity
If a single link adaptation process is used, then the device complexity is reduced, but the reliability of data transmission deteriorates due to negative impacts from shared resource failures on dedicated resources
Solution Approach 1:
The patent segments the link adaptation process into separate instances for dedicated and shared resources. This segmentation isolates the reliability concerns of shared resources from dedicated resources, preventing failures in shared resource adaptation from negatively impacting dedicated resource transmission. Each LA instance independently manages its resource type, resolving the contradiction by maintaining simplicity while achieving reliability through architectural separation.
Solution Approach 2:
The patent extracts the link adaptation functionality for different resource types into separate, independent LA instances. By taking out the shared resource adaptation from the dedicated resource adaptation process, the patent prevents interference and reliability degradation. This extraction allows dedicated resources to maintain high reliability without being affected by the varying conditions of shared resources, while keeping the overall system relatively simple.
Data Source
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AI summary
The present disclosure provides a method implemented in an Access Node (AN) for performing Link Adaptation (LA) for a radio link to which different types of resources are allocated. The method comprises operating separate LA instances for the different types of resources to separately adapt Modulation and Coding Schemes (MCS's) for the different types of resources. The method further comprises performing transmissions on the different types of resources according to the separately adapted MCS's. Also, the present disclosure provides an AN for performing the LA.