Dynamic UE Antenna Grouping for Uplink Interference Reduction
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR and LTE technologies, face challenges in optimizing user equipment (UE) antenna configurations for efficient uplink transmission, leading to potential interference and reduced throughput due to the lack of dynamic antenna grouping coordination between UE and base stations.
Innovation Solution
The implementation of UE antenna grouping techniques, where UE dynamically groups or regroups antennas based on indications from the base station, allowing for coordinated configuration of UE antenna panels to enhance uplink transmission efficiency and reliability, while ensuring that the base station is aware of these changes to make appropriate control decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE antennas are statically configured without dynamic grouping, then device complexity is reduced, but uplink transmission reliability and throughput are degraded due to interference and inability to adapt to changing channel conditions
Solution Approach 1:
The patent implements dynamic antenna grouping where the UE can reconfigure its antenna panels based on channel conditions and BS requirements. The UE groups antennas into different panels dynamically, and the BS receives indications of these groupings to coordinate transmissions, thereby improving uplink reliability through adaptability while managing complexity through standardized signaling procedures.
2Productivity
If UE dynamically groups antennas without BS coordination, then uplink transmission efficiency is improved, but interference increases due to lack of synchronization between UE and BS
Solution Approach 1:
The patent establishes a feedback mechanism where the UE sends antenna group indication messages to the BS, informing it of the current antenna panel configurations. The BS uses this feedback to coordinate its transmissions and scheduling decisions, ensuring that dynamic antenna grouping improves throughput while maintaining synchronization to minimize interference.
3Measurement precision
If BS does not know UE antenna groupings, then device complexity is reduced, but measurement precision and control decisions are degraded
Solution Approach 1:
The patent implements preliminary action by having the UE transmit antenna group indication messages to the BS before actual data transmissions occur. This allows the BS to advance-know the UE's antenna panel configurations and make informed control decisions, improving measurement precision and scheduling accuracy while managing complexity through standardized signaling protocols.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for user equipment (UE) antenna grouping for uplink transmission, such as dynamic antenna grouping for uplink transmission using multiple transmission configurations. A method that may be performed by a UE includes grouping one or more UE antennas into one or more groups and sending an indication of the one or more groups to a base station (BS). Another method that may be performed by a UE includes receiving an indication from a BS to group one or more UE antennas and grouping the one or more UE antennas based on the indication.