Multi-TRP PDCCH Beam Identification for Link Recovery
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently recovering beam failure in scenarios involving multiple TRPs due to the reliance on single beam identification for Physical Downlink Control Channel (PDCCH) transmission, which limits transmission reliability and robustness.
Innovation Solution
The proposed solution involves apparatus and methods for new beam identification and recovery, including configuring multiple beam identification resources and transmitting/receiving information to identify and utilize multiple recovery beams for enhanced PDCCH transmission across multiple TRPs, enhancing reliability through diverse beam usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single beam identification is used for PDCCH transmission, then device complexity is reduced, but transmission reliability deteriorates in multi-TRP scenarios
Solution Approach 1:
The patent divides the beam identification process into multiple independent beam identification resources, where each resource corresponds to a specific TRP. This segmentation allows the system to identify multiple beams simultaneously for different TRPs, improving transmission reliability without requiring a single complex unified identification mechanism.
Solution Approach 2:
The patent creates a universal beam identification framework that works across multiple TRPs using the same identification resources. The beam identification resources are designed to be multi-functional, serving both individual TRP identification and coordinated multi-TRP transmission, thereby reducing overall system complexity while enhancing reliability.
2Reliability
If multiple beam identification resources are configured, then transmission robustness is improved, but device complexity increases
Solution Approach 1:
The configuration is segmented into multiple beam identification resources, each associated with specific TRPs. This segmentation allows the system to manage complexity by organizing configurations in a structured manner, where each resource can be independently configured and managed, reducing the overall burden while improving robustness.
Solution Approach 2:
The patent performs preliminary configuration of beam identification resources before actual transmission occurs. By pre-configuring multiple beam identification resources and their associations with TRPs, the system prepares the framework in advance, reducing real-time complexity and enabling faster, more robust link recovery when needed.
3Adaptability or versatility
If single TRP transmission is used, then device complexity is reduced, but adaptability to beam failure scenarios deteriorates
Solution Approach 1:
The patent designs a universal multi-TRP transmission framework where the same beam identification resources and procedures can be applied across multiple TRPs. This multi-functional approach enables the system to adapt to beam failure scenarios by switching between TRPs using the same identification mechanism, improving versatility without proportionally increasing complexity.
Solution Approach 2:
The patent introduces beam identification resources as intermediaries that mediate between multiple TRPs and the UE. These intermediary resources provide a standardized interface for TRP identification and selection, simplifying the coordination complexity while enhancing the system's ability to adapt to beam failure through multi-TRP operations.
Data Source
AI summary
Apparatus and methods of new beam identification for link recovery for enhanced Physical Downlink Control Channel (PDCCH) with multiple transmissions are disclosed. The apparatus includes: a receiver that receives configurations indicating a plurality of beam identification resources for identifying a plurality of candidate beams for link recovery; a processor that controls the receiver to monitor the beam identification resources and identifies one or more recovery beams from the candidate beams, upon detection of beam failure; a transmitter that transmits information indicating the recovery beams; wherein the processor further controls the receiver to monitor PDCCH transmitted with the recovery beams.