CORESET Mapping for Narrowband PDCCH Frequency Hopping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
User equipment with low bandwidth capability faces challenges in accessing networks due to the lack of specific configuration for control resource sets, leading to inadequate reception performance of Physical Downlink Control Channels (PDCCH).
Innovation Solution
A method and apparatus for determining control channels by receiving and sending CORESET information to enable terminals to adapt CORESET configurations, allowing for improved PDCCH reception performance through frequency hopping and repetition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If broadband CORESET configuration is used for low bandwidth capability UE, then network access is enabled, but PDCCH reception performance deteriorates due to inability to support frequency hopping and repetition
Solution Approach 1:
The patent divides the CORESET configuration into multiple bandwidth parts (BWPs), where each BWP contains a subset of CORESET resources. Low bandwidth capability UEs can be configured with specific narrowband BWPs that support frequency hopping and repetition, while maintaining overall system broadband capability. This segmentation allows different UEs to access appropriate bandwidth resources matching their capabilities.
Solution Approach 2:
The patent introduces dynamic BWP switching mechanisms that allow the network to adaptively assign appropriate bandwidth configurations to UEs based on their capabilities and channel conditions. The CORESET configuration can be dynamically adjusted between different BWPs to optimize PDCCH reception performance for low bandwidth UEs while maintaining broadband support when needed.
2Reliability
If narrowband transmission is implemented for low bandwidth UE, then PDCCH reception performance is improved through frequency hopping and repetition, but device complexity increases
Solution Approach 1:
The patent pre-configures multiple BWPs with different bandwidth characteristics and CORESET configurations during initial network setup. Low bandwidth capability UEs are pre-assigned to specific narrowband BWPs that are optimized for frequency hopping and repetition. This preliminary configuration reduces runtime complexity by avoiding dynamic recalculation of bandwidth parameters during operation.
3Area of stationary object
If broadband CORESET configuration is used, then network coverage is maximized, but power consumption increases for low bandwidth UE
Solution Approach 1:
The patent applies local quality optimization by configuring different bandwidth characteristics in different spatial and frequency regions. Low bandwidth capability UEs are assigned to specific narrowband BWPs with reduced bandwidth parameters, allowing them to operate with lower power consumption while maintaining adequate coverage through frequency hopping across multiple narrowband resources. Broadband BWPs remain available for high capability UEs that require maximum coverage.
Data Source
AI summary
Described are a control channel determination method and apparatus, and a storage medium and a processor. The method comprises: a terminal receiving at least one piece of first control resource set (CORESET) information; the terminal determining, according to the at least one piece of first CORESET information and a first resource, at least one piece of second CORESET information corresponding to the first resource; and the terminal receiving, according to the at least one piece of second CORESET information, a physical downlink control channel (PDCCH). The present invention solves the technical problem in the relevant art of it not being possible to improve the reception performance of a physical downlink control channel (PDCCH).