UE Partial-Coherent Antenna Power Split for Full Uplink Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in transmission power control for User Equipment (UE) with partial coherent antennas, leading to restricted transmission capabilities.
Innovation Solution
Implementing improved transmission power control methods and codebook designs that allow simultaneous transmission from non-coherent antenna sets, enabling full utilization of transmission power by UEs with partial coherent antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE transmits using partial coherent antennas with existing power control methods, then transmission power is limited to ensure reliability, but transmission capacity and efficiency are reduced
Solution Approach 1:
The antenna array is segmented into multiple coherent subsets, where each subset can be independently controlled for power allocation. This allows the system to manage phase coherence requirements at the subset level rather than requiring full-array coherence, thereby maintaining reliability while enabling higher overall transmission capacity through parallel utilization of multiple antenna subsets.
2Stability of the object's composition
If a UE transmits using partial coherent antennas with existing power control methods, then transmission power is restricted for stability, but power efficiency is reduced
Solution Approach 1:
The power control mechanism dynamically adjusts transmission power based on the coherence characteristics of antenna subsets. By identifying which antenna subsets maintain phase coherence and which do not, the system dynamically allocates power to coherent subsets for high-efficiency transmission while applying more conservative power control to non-coherent subsets, thereby optimizing overall power efficiency while maintaining stability.
3Productivity
If a UE utilizes all antenna ports for simultaneous transmission, then transmission capacity increases, but phase coherence requirements cannot be met
Solution Approach 1:
The antenna ports are segmented into multiple coherent subsets that can simultaneously transmit. Each subset is identified based on its phase coherence characteristics, allowing the system to maintain reliability within each subset while increasing overall transmission capacity through parallel transmission across multiple subsets. This segmentation resolves the contradiction by enabling simultaneous transmission without requiring global phase coherence across all antennas.
4Reliability
If a UE limits transmission to coherent antenna subsets only, then phase coherence is maintained, but transmission power utilization is reduced
Solution Approach 1:
The power control mechanism is designed to universally handle both coherent and non-coherent antenna subsets through a unified framework. Coherent subsets utilize power control optimized for phase-coherent transmission to maximize power utilization, while non-coherent subsets use power control appropriate for their characteristics. This multi-functional approach ensures that all antenna ports contribute to transmission, thereby improving overall power utilization while maintaining appropriate coherence levels for each subset.
Data Source
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AI summary
A method, a computer-readable medium, and an apparatus are provided that enable use of a full transmission power for a UE having a first set of coherent antenna ports that is non-coherent to a second set of coherent antenna ports. The apparatus determines a transmission power for a data transmission from the UE to a base station based at least in part on power control signaling from the base station, determines at least one antenna port having non-zero data for transmission, and determines a transmission power split for the at least one antenna port. Then, the apparatus transmits the data transmission from the at least one antenna port, wherein a combined transmission power from the at least one antenna port corresponds to the transmission power determined based at least in part on the power control signaled from the base station.