Uplink Beam Selection for Robust Wireless Transmission
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Solution Overview
Problem
Wireless communication systems face challenges in ensuring the accuracy and reliability of physical uplink shared channel transmissions, particularly in maintaining robustness and reducing power consumption in user equipment devices, which affects battery life and communication efficiency.
Innovation Solution
Configuring wireless devices to perform repeated uplink communications using multiple beams, employing time division, frequency division, or spatial division multiplexing, and adjusting parameters such as multiplexing schemes, repetition numbers, and power control to enhance robustness and reliability of uplink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repeated uplink transmissions are performed using multiple beams, then reliability of uplink communication is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic beam selection and adaptive repetition strategies where the system adjusts transmission parameters based on channel conditions. The base station configures multiple beams with different characteristics and selectively activates them based on real-time channel quality, allowing the system to achieve high reliability only when necessary rather than always using maximum redundancy
Solution Approach 2:
The system changes transmission parameters such as beam direction, transmission power, and repetition count based on channel conditions. By dynamically adjusting these parameters, the system achieves reliable communication while minimizing power consumption - using higher power and more repetitions only when channel conditions deteriorate
2Reliability
If multiple multiplexing schemes are used for repeated transmissions, then robustness of communication is improved, but device complexity increases
Solution Approach 1:
The patent segments the uplink transmission into multiple independent repetitions, each using a different beam and potentially different multiplexing resources. This segmentation allows the system to achieve diversity gain without requiring complex joint processing - each repetition can be handled independently by the receiver, simplifying the overall system complexity while maintaining robustness
Solution Approach 2:
The system designs the multiplexing scheme to be universally applicable across different transmission scenarios. The same framework supports time-division, frequency-division, and spatial-division multiplexing, allowing the system to adapt to different channel conditions and service requirements without requiring separate specialized mechanisms for each case
3Measurement precision
If transmission power is increased for repeated uplink communications, then accuracy of signal reception is improved, but battery life decreases
Solution Approach 1:
The system employs periodic transmission repetitions instead of continuous high-power transmission. By spacing repetitions in time and using lower power for each individual transmission, the system achieves the same cumulative energy delivery while allowing the battery to discharge more slowly between transmissions, effectively extending battery life while maintaining reception accuracy
Data Source
AI summary
This disclosure relates to techniques for providing control signaling for robust uplink data transmissions in a wireless communication system. A wireless device may be configured to perform an uplink transmission, including performing multiple repetitions of the uplink transmission. The wireless may select a beam for each repetition, and it may be the case that different repetitions are transmitted using different beams.