NR Resource Mapping With Interleaved VRB-PRB Bundle Alignment
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Solution Overview
Problem
Existing VRB-to-PRB mapping methods often result in inconsistent sizes between VRB and PRB bundles, preventing successful mapping in Next Generation Radio (NR) technology.
Innovation Solution
A resource mapping method that determines VRB bundles with lower and higher frequencies, fixes their mapping to PRB bundles with corresponding indexes, and uses interleaved mapping to assign remaining bundles, while inserting nulls in the interleaver to ensure consistent sizes, allowing for successful VRB-to-PRB mapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If interleaved VRB-to-PRB mapping is performed in units of RB bundle, then frequency diversity is improved, but the VRB bundle and PRB bundle sizes become inconsistent preventing successful mapping
Solution Approach 1:
The patent performs preliminary actions by determining the number of VRB bundles and checking whether it is an integer multiple of interleaver rows/columns before executing the interleaved mapping. This advance check and preparation prevents the size inconsistency problem from occurring during the actual mapping process, ensuring both frequency diversity and mapping success.
2Adaptability or versatility
If the number of VRB bundles is not an integer multiple of interleaver dimensions, then flexibility in resource allocation is improved, but the interleaved mapping cannot be completed
Solution Approach 1:
The patent changes the parameter of interleaver configuration by allowing dynamic selection of interleaver row or column numbers based on the VRB bundle count. When the VRB bundle number is not an integer multiple of the initial interleaver dimension, the system adjusts to use the other dimension (columns if rows failed, or vice versa), maintaining both flexibility and mapping completion.
3Reliability
If fixed mapping is applied to maintain bundle size consistency, then mapping reliability is improved, but frequency diversity gain from interleaved mapping is reduced
Solution Approach 1:
The patent segments the VRB bundles into two parts: those that can be successfully interleaved and those that require fixed mapping. By dividing the resource blocks this way, the system maintains mapping reliability for all bundles while preserving frequency diversity benefits for the interleaved portion, achieving a balanced solution.
Data Source
AI summary
Disclosed by the present application are a resource mapping method and apparatus and device, comprising: determining to-be-sent data hosted on a data-channel physical downlink shared channel (PDSCH)/physical uplink shared channel (PUSCH); mapping said to-be-sent data to a virtual resource block (VRB); mapping the virtual resource block to a physical resource block (PRB) in resource block (RB) bundle units. Using the present application, it is possible to prevent the problem of the size of a virtual resource block bundle being inconsistent with the size of a physical resource block bundle, thus causing it to be impossible to map the virtual resource block to the physical resource block.