PUCCH Resource Reuse for Slot-Level Uplink Throughput
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Solution Overview
Problem
Existing 5G NR technologies do not effectively utilize pre-configured physical uplink control channel (PUCCH) resources due to unused slots for control signal transmission, leading to inefficient resource allocation and reduced throughput.
Innovation Solution
Identify unused PUCCH resources at runtime by checking for channel status information reference signal (CSI-RS) payload transmission, and mark these resources as unused for physical uplink control channels, allowing them to be reused for physical uplink shared channel (PUSCH) data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUCCH resources are pre-configured for control signal transmission, then control signal delivery is ensured, but resource utilization efficiency deteriorates due to unused slots
Solution Approach 1:
The patent applies dynamics by transitioning from static pre-configured PUCCH resources to dynamic resource allocation. The system dynamically determines whether to use PUCCH or PUSCH resources based on real-time CSI-RS payload transmission needs, allowing flexible adaptation between control signal delivery and data transmission requirements
Solution Approach 2:
The patent implements universality by enabling PUCCH resources to serve multiple functions: they can be used for control signal transmission when needed, and reused for data transmission when CSI-RS payload is detected. This multi-functionality resolves the contradiction by allowing the same resources to adapt to different operational requirements
2Reliability
If PUCCH resources are dedicated for control channels, then control information transmission is prioritized, but data transfer throughput is reduced
Solution Approach 1:
The patent applies local quality by making differentiated resource allocation decisions at the slot level. Instead of uniformly dedicating all PUCCH resources to control signals, the system evaluates each slot's specific needs (CSI-RS payload presence) and locally determines the optimal resource usage, allowing control signals to be prioritized where needed while enabling data transmission where control overhead would be excessive
3Reliability
If unused PUCCH resources are left idle, then control channel functionality is maintained, but system throughput is reduced
Solution Approach 1:
The patent implements discarding and recovering by detecting when PUCCH resources would be unused (when CSI-RS payload transmission occurs) and recovering those resources for alternative use. The system identifies the unused resources and reallocates them to PUSCH data transmission, thereby recovering valuable bandwidth that would otherwise remain idle
Data Source
AI summary
A system can, in connection with broadband cellular communications with a user equipment, allocate uplink data to a radio network temporary identifier, which corresponds to the user equipment, for physical uplink shared channel resources, wherein the physical uplink shared channel resources correspond to a slot. The system can, based on determining that the slot is used to transmit a channel status information reference signal payload, mark a corresponding resource unused for a physical uplink control channel. The system can receive data from the user equipment using the corresponding resource.