PDSCH Rate Matching Across Multiple CORESETs
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficient rate matching for Physical Downlink Shared Channel (PDSCH) transmissions across multiple control resource sets (CORESETs) and bandwidth parts (BWP), leading to suboptimal resource utilization and potential interference.
Innovation Solution
The implementation of a method that configures rate matching patterns for PDSCH transmissions, allowing processors in user equipment (UE) and base stations to dynamically match rates around specific CORESETs and associated search spaces within active BWPs, including partial overlaps and distinct numerologies, to optimize resource allocation and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rate matching is performed around all configured CORESETs across multiple BWPs, then interference is reduced and resource utilization is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent applies local quality by differentiating the treatment of CORESETs based on their association with active BWPs. Rate matching is selectively applied around CORESETs in active BWPs while excluding those in inactive BWPs, creating a localized optimization that balances resource utilization with processing complexity.
Solution Approach 2:
The patent introduces dynamics by making the rate matching behavior adaptive to BWP activation states. The system dynamically adjusts which CORESETs require rate matching based on real-time BWP activation status, allowing the processing complexity to vary according to network conditions rather than applying a static approach to all CORESETs.
2Object-affected harmful factors
If rate matching is applied to CORESETs in inactive BWPs, then comprehensive interference protection is achieved, but processing overhead and computational burden increase
Solution Approach 1:
The patent implements partial action by applying rate matching only to the extent necessary - specifically around CORESETs associated with active BWPs. This partial application of rate matching provides sufficient interference protection for currently active transmissions while avoiding the excessive processing burden of applying rate matching to all configured CORESETs including those in inactive BWPs.
3Productivity
If flexible rate matching configuration is implemented across multiple BWPs and CORESETs, then resource allocation efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the rate matching configuration into distinct segments associated with individual BWPs and their respective CORESETs. This segmentation allows the system to manage complexity through modular configuration, where each BWP-CORESET pair can be independently configured and managed, improving resource allocation efficiency while keeping configuration complexity tractable through structured organization.
Data Source
AI summary
Methods, apparatuses, and computer-readable medium are provided for rate matching. An example method may include receiving a rate matching pattern configuration indicating at least a first control resource set (CORESET) in a first bandwidth part (BWP) and a second CORESET in a second BWP. The example method may also include receiving a physical downlink shared channel (PDSCH) in the first BWP. The example method may include processing the PDSCH transmission based on the rate matching pattern configuration, where the processing may include rate matching around resources of the first CORESET and first associated search space (SS) sets and the second CORESET and second associated SS sets.