eRedCap CORESET Segmentation for Complexity Reduction
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Solution Overview
Problem
Existing wireless communication networks face challenges in reducing complexity, power usage, data rate, and data requirements, particularly for enhanced-reduced capability user equipment (eRedCap) devices.
Innovation Solution
The implementation of enhanced reduced capability user equipment (eRedCap) features such as repeated control resource sets (CORESETs), an increased set of CORESET symbols, and an enhanced CORESET (eCORESET), along with the use of indices to determine the location of eCORESETs, random access channel occasion association patterns, and multiple random access channel occasions in a half-frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional CORESET configuration is used, then device complexity and power consumption are higher, but communication reliability is maintained
Solution Approach 1:
The patent segments the CORESET configuration into multiple instances with different durations. Instead of using a single long-duration CORESET, the system divides it into shorter instances (e.g., 2 symbols instead of 4), reducing the time resources occupied and lowering device complexity while maintaining coverage through multiple instances
Solution Approach 2:
The patent implements periodic repetition of CORESET instances across different time slots. By periodically transmitting control information in multiple short instances rather than one long instance, the system reduces instantaneous resource occupation and device complexity while ensuring reliable delivery through periodic redundancy
2Reliability
If increased CORESET symbols are used, then control coverage is improved, but bandwidth resources are consumed
Solution Approach 1:
The patent segments the control resource set into multiple shorter instances distributed across different time slots. Instead of allocating a large number of symbols continuously, the system uses multiple short instances (e.g., 2 symbols each) repeated over time, reducing instantaneous bandwidth consumption while maintaining overall control coverage
Solution Approach 2:
The patent transitions from extending CORESET duration in the frequency/time dimension (increasing symbols) to achieving coverage through temporal repetition in the time dimension. By distributing control instances across multiple time slots rather than concentrating them in one long sequence, the system reduces bandwidth resource consumption at any given moment while maintaining control coverage
3Reliability
If repeated CORESET instances are implemented, then control information reliability is improved, but processing complexity increases
Solution Approach 1:
The patent uses a limited number of repeated CORESET instances (e.g., 2 instances per slot) rather than excessive repetition. This partial repetition provides sufficient reliability for control information while avoiding the processing complexity that would arise from too many instances, finding an optimal balance between reliability and complexity
Data Source
AI summary
Disclosed are methods, systems, and computer-readable medium to perform operations including: identifying one or more instances of a control resource set (“CORESET”); monitoring a physical downlink control channel (“PDCCH”) candidate to detect a physical downlink control channel using the one or more instances of the CORESET; and receiving, based on the detected PDCCH, data scheduled by the PDCCH.