Interleaved Mapping for Physical Resource Element Bundles
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Solution Overview
Problem
Existing methods for mapping logical resource elements to physical resource elements often result in unreasonable mapping results due to multiple physical resource element bundles corresponding to a single logical resource element, leading to resource transmission issues and reduced flexibility in resource configuration.
Innovation Solution
An interleaved mapping method that interleaves virtual sequences of physical resource element bundles using a specific interleaving function, marks invalid bundles without corresponding actual physical resource element bundles, and determines valid correspondences to establish a reasonable mapping relationship between logical and actual physical resource element bundles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical resource element bundles are interleaved to increase diversity gain and randomization degree, then interference randomization is improved, but multiple physical resource element bundles may correspond to a single logical resource element leading to unreasonable mapping results
Solution Approach 1:
The patent introduces a preliminary action by adding a validity judgment step after interleaving. The mapping apparatus determines whether each physical resource element bundle in the interleaved sequence is valid (corresponds to an actual physical bundle) or invalid (virtual bundle only). This preliminary validation prevents the mapping error from propagating to the resource element mapping stage, thus maintaining mapping accuracy while preserving interference randomization benefits.
Solution Approach 2:
The patent introduces an intermediary mechanism - the validity flag - that acts as a mediator between the interleaved physical resource element bundles and the resource elements. This intermediary layer allows the system to handle the diversity gain from interleaving while filtering out invalid mappings before they affect resource element assignment, thus resolving the contradiction between randomization and mapping precision.
2Adaptability or versatility
If virtual physical resource element bundles are added to the interleaved sequence, then flexibility in resource configuration is improved, but the quantity of physical resource element bundles increases leading to potential mapping errors
Solution Approach 1:
The patent applies segmentation by dividing physical resource element bundles into two distinct segments: actual physical bundles and virtual bundles. Each bundle is tagged with a validity indicator that segments the management logic. This allows the system to configure flexible resource structures using virtual bundles while maintaining clear distinction and control over which bundles are actually mapped to resource elements, thus avoiding mapping errors despite increased total bundle quantity.
Solution Approach 2:
The patent uses copying by creating virtual copies of physical resource element bundles. These virtual bundles are copies that exist in the interleaved sequence for configuration flexibility but are marked as invalid to prevent actual mapping. This copying mechanism allows flexible resource configuration without the complexity of managing additional real physical bundles, as the virtual copies serve only as placeholders in the interleaved structure.
Data Source
AI summary
An interleaved mapping method includes: interleaving a virtual sequence of first physical resource element bundles according to an interleaving function, wherein the first physical resource element bundles include actual physical resource element bundles and one or more virtual physical resource element bundles; marking a physical resource element bundle in the interleaved first physical resource element bundles without any corresponding actual physical resource element bundle as an invalid physical resource element bundle; determining a first correspondence of the valid physical resource element bundles in the interleaved first physical resource element bundles with respect to an actual sequence of the actual physical resource element bundles; and determining, based on the first correspondence and a second correspondence of logical resource elements with respect to the actual sequence, a mapping relationship between the logical resource elements and the actual physical resource element bundles.