CORESET Frequency Configuration for Reduced-Capability Terminals
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in efficiently supporting reduced-capability terminals and cells with smaller channel bandwidths, leading to limited control channel coverage and degraded monitoring performance.
Innovation Solution
A method for determining the frequency domain configuration of a control resource set (CORESET) in a wireless communication system, allowing reduced-capability terminals to effectively monitor physical downlink control channels (PDCCH) by configuring the CORESET within the terminal's bandwidth capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the CORESET is configured to cover the entire system bandwidth to ensure complete control channel coverage, then the control channel coverage is improved, but the complexity of the terminal increases and reduced-capability terminals cannot be supported
Solution Approach 1:
The patent applies local quality by configuring the CORESET to occupy only a partial frequency domain area (specific resource blocks within the system bandwidth) rather than the entire bandwidth. This allows reduced-capability terminals to monitor control channels in a localized frequency region, reducing their processing complexity while maintaining reliable control channel coverage for their specific needs.
2Device complexity
If the CORESET frequency domain area is reduced to support reduced-capability terminals, then the terminal complexity is reduced, but the control channel coverage deteriorates
Solution Approach 1:
The patent implements dynamics by allowing the network to dynamically configure and adjust the CORESET frequency domain area according to terminal capabilities and service requirements. The CORESET can be flexibly positioned and sized within the system bandwidth, enabling the system to adapt between supporting reduced-capability terminals with limited monitoring areas and providing full coverage when needed.
3Reliability
If the CORESET is configured to monitor the entire frequency band, then the control channel monitoring performance is improved, but the frequency band utilization efficiency decreases
Solution Approach 1:
The patent applies segmentation by dividing the system bandwidth into multiple resource block groups and configuring the CORESET to occupy only specific segments (resource blocks) rather than the entire frequency band. This allows other frequency resources to be utilized for data transmission or other purposes, improving overall frequency band utilization efficiency while maintaining adequate control channel monitoring performance within the configured CORESET area.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure discloses a method and a device in a wireless communication system. According to an embodiment of the present disclosure, there is provided a method performed by a terminal in a wireless communication system, comprising: receiving, a frequency domain configuration of a control resource set (CORESET), determining a frequency domain area where a control resource set (CORESET) is located, wherein the frequency domain area where the CORESET is located comprises at least a part of the frequency domain area of CORESET determined based on the received frequency domain configuration of the CORESET; and monitoring a physical downlink control channel (PDCCH) based on the determined frequency domain area where the CORESET is located.