Separate Receive Beams for PDCCH and PDSCH to Reduce Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, such as 5G NR, face challenges in optimizing the beams used for physical downlink control channels (PDCCH) and physical downlink shared channels (PDSCH), as they often share the same beam, which can lead to suboptimal performance and increased power consumption.
Innovation Solution
The proposed solution involves configuring user equipment (UE) to use different beams for receiving PDCCH and PDSCH transmissions. A first beam is selected for PDCCH reception based on specific criteria, and a second beam is selected for PDSCH reception based on different criteria, allowing for optimized beam configuration for each channel type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the same beam is used for both PDCCH and PDSCH transmissions, then device complexity is reduced and ease of operation is improved, but performance is suboptimal and power consumption increases
Solution Approach 1:
The patent segments the beam configuration into separate configurations for PDCCH and PDSCH channels. The UE independently selects receive beams for each channel type based on their respective criteria, rather than using a unified beam configuration. This segmentation allows optimization of power consumption for each channel while maintaining operational simplicity through independent beam selection procedures.
Solution Approach 2:
The patent applies local quality by allowing different beam selection criteria to be applied to different channel types. PDCCH uses one set of criteria for beam selection while PDSCH uses another set, enabling each channel to have locally optimized beam characteristics suited to its specific requirements, thereby reducing overall power consumption while maintaining performance.
2Ease of operation
If the same beam is used for both PDCCH and PDSCH transmissions, then ease of operation is improved, but performance metrics such as SNR and throughput are suboptimal
Solution Approach 1:
The patent segments the beam configuration into separate configurations for PDCCH and PDSCH channels. The UE independently selects receive beams for each channel type based on their respective criteria, rather than using a unified beam configuration. This segmentation allows optimization of power consumption for each channel while maintaining operational simplicity through independent beam selection procedures.
Solution Approach 2:
The patent applies local quality by allowing different beam selection criteria to be applied to different channel types. PDCCH uses one set of criteria for beam selection while PDSCH uses another set, enabling each channel to have locally optimized beam characteristics suited to its specific requirements, thereby reducing overall power consumption while maintaining performance.
3Loss of energy
If different beams are used for PDCCH and PDSCH transmissions, then power consumption is reduced and performance metrics are optimized, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously select appropriate receive beams for PDCCH and PDSCH channels based on predefined criteria. The network configures multiple candidate beams, and the UE independently determines the optimal beam for each channel type without requiring complex network control or coordination, thereby reducing device complexity while achieving power optimization.
Solution Approach 2:
The patent applies parameter changes by allowing the UE to switch between different beam configurations based on channel type and selection criteria. The system dynamically adjusts beam parameters (such as beam direction, width, and formation) independently for PDCCH and PDSCH, enabling power optimization through parameter variation without requiring complex overall system reconfiguration.
4Loss of energy
If different beams are used for PDCCH and PDSCH transmissions, then power consumption is reduced, but device complexity and beam management overhead increase
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously select appropriate receive beams for PDCCH and PDSCH channels based on predefined criteria. The network configures multiple candidate beams, and the UE independently determines the optimal beam for each channel type without requiring complex network control or coordination, thereby reducing device complexity while achieving power optimization.
Solution Approach 2:
The patent applies parameter changes by allowing the UE to switch between different beam configurations based on channel type and selection criteria. The system dynamically adjusts beam parameters (such as beam direction, width, and formation) independently for PDCCH and PDSCH, enabling power optimization through parameter variation without requiring complex overall system reconfiguration.
Data Source
AI summary
Method and apparatus for using different beams for PDCCH and PDSCH. The apparatus receives a PDCCH transmission using a first receive beam, the PDCCH transmission scheduling a PDSCH transmission. The apparatus receives the PDSCH transmission using a second receive beam. The apparatus may select the second receive beam for the PDSCH transmission separately from the first receive beam for the PDCCH transmission. The apparatus may switch from the first receive beam to the second receive beam after reception of the PDCCH transmission to receive the PDSCH transmission.