RAN Resource Allocation via Bit String Encoding
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Solution Overview
Problem
Current technologies lack efficient methods for inter-RAT radio resource sharing, particularly in scenarios where two nodes need to coordinate resources over a shared spectrum, leading to challenges in representing resource allocation between different radio access technologies (RATs) like LTE and NR, due to issues with signaling overhead and complex message structures.
Innovation Solution
A method is proposed for simplified resource allocation representation using bit strings to indicate available resources, allowing for efficient coordination between nodes of different RATs, where resources are represented by bit indices, with 0 indicating availability and 1 indicating usage, enabling efficient encoding and processing of resource allocation messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed resource allocation information is exchanged between base stations of different RATs, then resource coordination accuracy is improved, but signaling overhead and message complexity increase
Solution Approach 1:
The resource allocation information is segmented into two parts: a first part indicating resource blocks allocated to the first RAT, and a second part indicating resource blocks allocated to the second RAT. This segmentation allows each part to be processed independently, reducing the overall signaling overhead while maintaining coordination accuracy.
Solution Approach 2:
The patent transforms the resource allocation representation from a detailed time-frequency grid description to a more compact format using resource indicator values (RIVs) and bit field representations. This dimensional transformation compresses the information while preserving the essential allocation patterns needed for accurate coordination.
2Measurement precision
If symbol-level granularity is used for resource allocation in all resource blocks, then resource allocation precision is improved, but processing complexity and signaling overhead increase
Solution Approach 1:
The patent applies different levels of granularity to different resource blocks based on local requirements. For resource blocks containing overlapping control and reference signals (OCRS), detailed symbol-level information is provided. For other resource blocks, coarser resource block-level allocation is sufficient. This local differentiation reduces overall processing complexity while maintaining precision where needed.
Solution Approach 2:
Instead of applying symbol-level granularity uniformly across all resource blocks, the patent applies it only partially to resource blocks where OCRS are present. This partial action approach reduces processing complexity and signaling overhead while still achieving the necessary precision for accurate resource coordination in critical areas.
3Productivity
If comprehensive resource allocation messages are transmitted between base stations, then resource sharing efficiency is improved, but message structure complexity increases
Solution Approach 1:
The patent changes the parameters used to represent resource allocation from detailed time-frequency coordinates to compressed representations such as resource indicator values (RIVs) and bit field encodings. This parameter transformation simplifies the message structure while preserving the information needed for efficient resource sharing between different RATs.
Data Source
AI summary
According to certain embodiments, a method is provided for resource allocation between a first network node (160) associated with a first radio access technology (RAT) and a second network node (160) associated with a second RAT where the first RAT and the second RAT use an overlapping spectrum. The method includes determining, by the first network node, one or more resources of a plurality of resources for use by the second network node. The plurality of resources is represented by a bit string. A message is transmitted to the second network node. The message includes the bit string in which the one or more resources for use by the second network node are indicated.