NR Resource Pattern Indication to Reduce Bitmap Signaling Overhead
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The coexistence of LTE-A and NR systems in wireless communication leads to resource waste and excessive signaling overheads due to the use of bitmaps for indicating reserved resources, particularly for synchronization signal blocks (SSBs), with varying subcarrier spacings causing inefficiencies.
Innovation Solution
A resource indication method using a first communication device to receive information indicating a resource pattern, determining reserved resources based on positions defined by the pattern, and avoiding transmission on those resources, thereby reducing resource waste and signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a bitmap is used to indicate reserved resources in the LTE-A system, then the reserved resources can be indicated, but a great waste of resources is caused
Solution Approach 1:
The patent segments the resource indication into two parts: a resource pattern that defines the structure and positions of reserved resources, and a resource set that specifies which resources match this pattern. This segmentation allows precise indication of reserved resources without requiring a bitmap for every single resource element, thereby reducing resource waste while maintaining indication precision.
2Measurement precision
If a time-frequency domain bitmap is used to indicate the SSB in the NR system, then the reserved resources can be indicated, but signaling overheads are excessively high
Solution Approach 1:
The patent divides the indication mechanism into a resource pattern component and a resource set component. The resource pattern captures the common structure of reserved resources (such as SSB positions), while the resource set identifies specific instances. This reduces signaling overhead compared to using a full time-frequency bitmap, while maintaining accurate indication of reserved resources.
Solution Approach 2:
The patent uses a resource pattern that can be copied and applied to multiple resource sets. Instead of individually indicating each reserved resource with a bitmap, the same pattern structure is reused across different resource sets, significantly reducing the amount of signaling information required while maintaining precise resource identification.
Data Source
AI summary
Embodiments of this application provide a resource indication method and a communication device. The resource indication method includes: A first communication device receives first information sent by a second communication device, where the first information is used to indicate a first resource pattern and indicate a reserved resource determined by using the first resource pattern, the first resource pattern is used to determine a position corresponding to each of N resource sets, and N is a positive integer greater than or equal to 1. The first communication device determines reserved resource based on the positions corresponding to the N resource sets and indicated by the first resource pattern, where the reserved resource is a resource unavailable to the first communication device. The first communication device determines not to transmit a signal by using the reserved resource.