Uplink Partial Coherent Codebooks for 8-Port MIMO Capacity
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Solution Overview
Problem
The existing wireless communication systems face challenges in supporting high data traffic, increased transmission rates, and low latency while efficiently utilizing resources, particularly in uplink transmission and reception, especially with the introduction of advanced technologies like Massive MIMO and Non-Orthogonal Multiple Access.
Innovation Solution
A method and apparatus for uplink transmission and reception using partial coherent codebook subsets, including specific precoding matrices for uplink transmission and reception, are introduced to optimize communication in wireless systems, supporting uplink eight Tx antenna ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional uplink transmission methods are used, then system simplicity is maintained, but data traffic capacity and transmission rates cannot support explosive growth demands
Solution Approach 1:
The codebook is segmented into multiple codebook subsets, each optimized for specific transmission scenarios. The UE can select appropriate subsets based on channel conditions and capability, enabling scalable support for high data traffic without requiring complete system redesign.
Solution Approach 2:
The system dynamically adapts between different codebook subset configurations based on UE capability and channel conditions. The UE can switch between first type and second type partial coherent codebook subsets, allowing flexible optimization of data traffic capacity while maintaining manageable complexity.
2Productivity
If advanced technologies like Massive MIMO and NOMA are introduced, then transmission rate and data capacity increase, but resource utilization efficiency and system complexity management become challenging
Solution Approach 1:
The patent changes key parameters of the codebook structure by defining different types of partial coherent codebook subsets with varying coherence levels and precoding matrix configurations. This allows the system to optimize transmission rates for Massive MIMO and NOMA while managing resource complexity through parameterized codebook selection rather than structural overhaul.
3Reliability
If codebook subsets with higher coherence are used, then transmission precision and reliability improve, but the flexibility and adaptability to different channel conditions decrease
Solution Approach 1:
The patent applies partial coherence rather than full coherence in the codebook subsets. The first type partial coherent codebook provides sufficient reliability for many scenarios while the second type offers reduced coherence for higher adaptability. This partial action approach achieves the optimal balance between reliability and adaptability without requiring extreme measures.
Solution Approach 2:
The system dynamically selects between different partial coherent codebook subset types based on channel conditions and UE capability. The UE can adaptively switch between first type and second type subsets, maintaining transmission reliability when conditions permit while achieving higher adaptability when channel conditions vary significantly.
Data Source
AI summary
A method and apparatus for performing uplink transmission and reception in a wireless communication system are disclosed. According to an embodiment of the present disclosure, a method for performing uplink transmission in a wireless communication system may include: transmitting capability information related to a codebook subset for uplink transmission supported by the UE to a base station; receiving configuration information related to a codebook subset based on the capability information from the base station; and performing the uplink transmission based on the configuration information, and the capability information includes a first type of partial coherent codebook subset or a second type of partial coherent codebook subset, and the first type of partial coherent codebook subset includes at least one first precoding matrix having four zeros and four non-zero values per column, and the second type of partial coherent codebook subset includes at least one second precoding matrix having six zeros and two non-zero values for each column.