Blind Detection Allocation for Carrier Aggregation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently allocating blind detections and Control-Channel Elements (CCEs) across component carriers for UEs to monitor multiple PDCCHs from multiple TRPs, leading to increased processing power requirements and potential overload.
Innovation Solution
A method where a UE determines the allocation of blind detections and CCEs across component carriers using scaling factors to optimize the number of monitored PDCCHs per slot, allowing for efficient distribution of available resources to support both single-TRP and multi-TRP operations, thereby maximizing the number of monitored PDCCH candidates and CCEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE monitors multiple PDCCHs from multiple TRPs across all component carriers, then the reliability and coverage of communication is improved, but the processing power requirements and complexity increase significantly
Solution Approach 1:
The patent segments the monitoring of PDCCHs by dividing component carriers into two groups: N1 component carriers with scaling factor X=1 (monitoring one PDCCH per carrier) and N2 component carriers with scaling factor X>1 (monitoring multiple PDCCHs per carrier). This segmentation allows the UE to distribute processing load across different carriers based on their importance and channel conditions, improving reliability for critical carriers while controlling overall processing complexity.
Solution Approach 2:
The patent applies local quality by assigning different scaling factors to different component carriers based on their specific characteristics. N2 carriers (with higher scaling factors) are typically those with better channel conditions or higher priority, where the UE can afford to monitor multiple PDCCHs. N1 carriers use lower scaling factors to conserve processing resources. This localized differentiation optimizes the balance between reliability and processing complexity.
2Productivity
If the UE increases the number of blind detections and CCEs monitored, then the number of monitored PDCCH candidates increases, but the processing power demands and energy consumption increase
Solution Approach 1:
The patent changes the parameter of blind detection scaling factor from a uniform value to a differentiated set of values (X=1 for N1 carriers, X>1 for N2 carriers). This parameter change allows the UE to dynamically adjust the number of blind detections and CCEs monitored on each component carrier, increasing overall PDCCH monitoring capability while controlling processing energy consumption through selective application of higher scaling factors only on carriers where it provides the most benefit.
3Adaptability or versatility
If the system allocates more blind detections and CCEs to each component carrier, then the versatility of multi-TRP operation is improved, but the total resource allocation becomes unsustainable
Solution Approach 1:
The patent implements universality by creating a scalable framework that can adapt to different multi-TRP operation scenarios. The scaling factor mechanism allows the same basic structure to support both single-TRP operation (X=1 for all carriers) and multi-TRP operation (X>1 for selected carriers), making the system versatile without requiring separate resource allocation schemes for different operational modes.
Data Source
AI summary
A UE determines N1 component carriers on each of which the UE is configured to detect a respective one PDCCH in a slot. The UE determines N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot. The UE determines a total Q blind detections of PDCCH that the UE is capable of performing. The UE determines a first predetermined scaling factor X. The UE allocates M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q. M2 equals to X*M1. The UE performs blind detections in accordance with the allocations.