PUCCH Resource Selection Using TD-OCC and Cyclic Shift Segmentation
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Solution Overview
Problem
Current 5G NR technologies face limitations in efficiently scheduling physical uplink control channel (PUCCH) resources, leading to inadequate resource utilization and reduced flexibility in supporting multiple users, particularly due to constraints in time division orthogonal cover codes (TD-OCC), cyclic shift step sizes, and interlace configurations.
Innovation Solution
The method involves determining PUCCH resource sets based on received indices and indicators, allowing for flexible selection of TD-OCC, cyclic shift step sizes, and interlace configurations to optimize resource allocation, enabling more efficient scheduling and increased resource availability for multiple users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional PUCCH resource scheduling methods are used, then the scheduling process is simple, but the resource utilization is insufficient and flexibility is limited
Solution Approach 1:
The patent segments the PUCCH resource configuration into multiple resource sets, each containing different combinations of TD-OCC, cyclic shift step sizes, and interlace configurations. This segmentation allows the system to offer multiple scheduling options without requiring complex resource determination processes, thereby improving scheduling flexibility while maintaining manageable complexity through structured organization of resources.
Solution Approach 2:
The patent utilizes parameter changes by varying TD-OCC indices, cyclic shift step sizes, and interlace configurations across different PUCCH resource sets. These parameter variations enable flexible resource allocation for multiple users without requiring additional downlink control information resources, as the flexibility is achieved through systematic parameter combinations rather than complex signaling.
2Productivity
If more users are scheduled during uplink periods, then resource utilization improves, but the scheduling complexity increases
Solution Approach 1:
The patent creates a universal resource selection mechanism where a single PUCCH resource indicator can point to different resource sets with varying configurations. This multi-functional approach allows the system to schedule multiple users efficiently by selecting appropriate resource sets based on user requirements, thereby increasing the number of scheduled users without proportionally increasing scheduling complexity, as the complexity is managed through the standardized resource set structure.
3Adaptability or versatility
If additional downlink control information resources are used to schedule more users, then scheduling flexibility improves, but the downlink control channel overhead increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple PUCCH resource sets with different TD-OCC, cyclic shift, and interlace combinations before actual scheduling occurs. This preliminary configuration allows the system to offer flexible resource allocation options without requiring additional downlink control information resources during the scheduling process, as the flexibility is embedded in the pre-established resource sets that can be selected through efficient indication mechanisms.
Data Source
AI summary
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for physical uplink control channel (PUCCH) resource configuration. In one aspect, a base station may schedule a user equipment (UE) for PUCCH transmission based on a time division orthogonal cover code (TD-OCC) or a set of TD-OCCs, a cyclic shift step size or a set of cyclic shift step sizes, a first symbol or a set of first symbols, or a cyclic shift set. The base station may distinguish communications from that UE based on the TD-OCC or set of TD-OCCs, the cyclic shift step size or set of cyclic shift step sizes, the first symbol or set of first symbols, or the cyclic shift set.