5G CORESET Configuration for Flexible PDCCH Group-Cast Scheduling
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Solution Overview
Problem
The 5G communication system, implemented in higher frequency bands to achieve higher data rates, faces challenges in reducing propagation loss and increasing transmission distance, necessitating advanced techniques like beamforming and MIMO, but existing resource set configurations are inadequate for efficient service provisioning.
Innovation Solution
The system provides a method for user equipment and base stations to configure control resource sets (CORESET) for enhanced communication, including determining RACH and RMSI CORESET configurations based on system information availability, to support various services and messages, and using higher layer parameters for subcarrier spacing and monitoring occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If higher frequency bands (mmWave) are used to achieve higher data rates, then data rate is improved, but propagation loss increases and transmission distance decreases
Solution Approach 1:
The patent segments the control resource configuration into multiple types (Type0-PDCCH, Type5-PDCCH) with different monitoring occasions and resource allocations. This segmentation allows the system to optimize resource usage for different service requirements, improving overall system efficiency and enabling better support for high data rate services while managing the limitations of mmWave propagation
Solution Approach 2:
The patent introduces dynamic configuration parameters including subcarrier spacing options (15 kHz, 30 kHz, 60 kHz) and flexible monitoring occasion configurations. These dynamic parameters allow the system to adapt resource allocation to varying service requirements and channel conditions, optimizing performance across different propagation scenarios and data rate requirements
2Length of stationary object
If advanced techniques like beamforming and MIMO are implemented to decrease propagation loss, then transmission distance is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal control resource configuration framework that handles multiple service types (unicast, multicast, broadcast) and multiple PDCCH types through a unified configuration mechanism. This multi-functional approach simplifies system complexity by providing a single standardized interface for resource allocation across diverse services and beamforming scenarios
Solution Approach 2:
The patent utilizes parameter changes in subcarrier spacing (15, 30, 60 kHz) and monitoring occasion configurations to adapt the control resource allocation to different service requirements and channel conditions. These parameter adjustments enable the system to optimize transmission distance and coverage without requiring complex additional hardware or processing
3Device complexity
If existing resource set configurations are used, then device complexity is maintained, but service provisioning efficiency is insufficient
Solution Approach 1:
The patent configures control resource parameters (subcarrier spacing, monitoring occasions, resource allocations) in advance through system information and RRC signaling. This preliminary configuration enables UEs to efficiently access and utilize appropriate resources without real-time negotiation, significantly improving service provisioning efficiency while maintaining manageable configuration complexity through standardized procedures
Data Source
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AI summary
A method of a user equipment (UE) in a wireless communication system is provided. The method comprises receiving, from a base station, first configuration information including first resource allocation information configured by higher layer signaling, determining whether second resource allocation information is received, identifying the second resource allocation information based on the determination, the second resource allocation information being identified as the first resource allocation information in case that the second resource allocation information is not received, and monitoring PDCCH for receiving DCI which schedules Group-cast message based on the identified second resource allocation information.