Type-1 PUSCH Configuration for Moving UE MIMO Adaptation
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Solution Overview
Problem
Current MIMO-based PUSCH transmission schemes in 5G systems are inadequate for moving user equipment with nonzero velocity, as they rely on fixed TPMI and SRI configurations that do not adapt to changing spatial information in frequency-selective channels.
Innovation Solution
Configuring two or more TPMIs for codebook-based transmission and two or more SRI indications for non-codebook-based transmission to dynamically adjust precoding and beamforming for moving user equipment, using high-layer parameters to enhance adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed transmit precoding matrix indicator and sounding reference signal resource indicator are configured for Type-1 PUSCH transmission, then device complexity is reduced and ease of operation is improved, but adaptability deteriorates for moving user equipment with nonzero velocity
Solution Approach 1:
The patent applies dynamics by enabling the transmit precoding matrix indicator and sounding reference signal resource indicator to change over time through multiple configurations. Instead of using fixed indicators, the system allows dynamic switching between multiple TPMI and SRI configurations based on channel conditions and user equipment movement, thereby improving adaptability while managing complexity through structured configuration sets.
2Reliability
If multiple transmit precoding matrix indicators and sounding reference signal resource indicators are configured for Type-1 PUSCH transmission, then adaptability is improved for moving user equipment, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the transmission configuration into multiple discrete indicator sets (multiple TPMI and SRI configurations). Each configuration represents a segmented option that can be independently selected based on channel conditions. This segmentation allows the system to manage complexity by organizing parameters into discrete, selectable groups rather than continuous adjustments.
Solution Approach 2:
The patent applies parameter changes by modifying the transmit precoding matrix indicator and sounding reference signal resource indicator values based on detected channel conditions and user equipment movement. The system dynamically adjusts these parameters by selecting from pre-configured sets, thereby improving communication reliability for moving equipment while controlling complexity through parameter selection rather than arbitrary changes.
Data Source
AI summary
The present disclosure relates to methods and apparatuses for PUSCH transmissions. According to an embodiment of the present disclosure, a method can include: configuring a transmission configuration parameter set for a Type-1 physical uplink shared channel transmission for a user equipment, and transmitting the transmission configuration parameter set to the user equipment. Wherein: in the case that a transmission scheme of the user equipment is configured as codebook-based transmission, two or more transmit precoding matrix indicators are configured; and in the case that the transmission scheme of the user equipment is configured as non-codebook-based transmission, two or more indications for sounding reference signal resource indicator are configured; and transmitting the transmission configuration parameter set to the user equipment.