Dynamic Single-TRP Multi-TRP PUCCH Scheme Switching
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, lack the ability to dynamically switch between single-TRP and multi-TRP modes for PUCCH transmission, which is essential for ensuring reliability and robustness, especially for critical services like URLLC, and face challenges in determining parameter values based on the applicable PUCCH scheme.
Innovation Solution
A method and apparatus that enable user equipment (UE) to determine whether to apply a multi-TRP or single-TRP PUCCH scheme based on configuration information, spatial relation information, power control parameters, and number of PUCCH repetitions, with the option to receive dedicated indications via downlink control information, allowing for dynamic switching and appropriate parameter interpretation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-TRP PUCCH scheme is applied, then reliability and robustness are improved, but device complexity and parameter determination difficulty increase
Solution Approach 1:
The patent implements dynamic switching between single-TRP and multi-TRP PUCCH schemes based on real-time conditions. The UE determines whether to apply multi-TRP or single-TRP scheme by evaluating configuration information, spatial relation information, power control parameters, and PUCCH repetition numbers, allowing the system to adapt to changing channel conditions and service requirements while maintaining operational simplicity through standardized determination criteria
Solution Approach 2:
The patent uses parameter-based determination to select between single-TRP and multi-TRP schemes. By checking parameters such as the number of spatial relation information (one or two), power control parameter subsets (one or two), and PUCCH repetition counts, the system dynamically adjusts the transmission scheme without requiring complex algorithms, thus improving reliability while keeping device complexity manageable
2Adaptability or versatility
If multi-TRP PUCCH scheme is applied, then beam diversity is improved, but parameter determination accuracy requirements increase
Solution Approach 1:
The patent performs preliminary determination of the PUCCH scheme before actual transmission. The UE evaluates configuration information, spatial relation information, power control parameters, and repetition numbers in advance to decide whether to apply multi-TRP or single-TRP scheme. This preliminary action ensures that the correct scheme is selected based on pre-configured parameters, maintaining both beam diversity benefits and accurate parameter determination
3Adaptability or versatility
If dynamic switching between single-TRP and multi-TRP modes is enabled, then system adaptability is improved, but control signaling overhead increases
Solution Approach 1:
The patent uses Downlink Control Information (DCI) to carry multiple functions: it provides dedicated indications for PUCCH scheme selection while also conveying uplink control information. This multi-functional approach allows dynamic mode switching between single-TRP and multi-TRP without requiring separate dedicated signaling channels, thus improving system adaptability while minimizing control signaling overhead
Data Source
AI summary
Systems, methods, apparatuses, and/or computer program products for dynamically switching between or determining whether to apply single-TRP mode and/or multiple-TRP mode are provided. One method may include receiving, at a user equipment, configuration information indicating that multi-transmission reception point (TRP) physical uplink control channel (PUCCH) scheme could be applicable, and determining, at the user equipment, whether to apply the multi-TRP PUCCH scheme or a single-TRP PUCCH scheme for an uplink control information (UCI) transmission on a determined PUCCH resource.