Uplink Precoding With Antenna Group Co-Phase Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing wireless signal transmission and reception procedures.
Innovation Solution
A method and apparatus for transmitting and receiving signals in a wireless communication system involving user equipment (UE) and a base station (BS) that utilize antenna groups, co-phase information, and precoding matrices to enhance signal transmission and reception efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If antenna groups are configured based on a plurality of antennas, then signal transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent divides the plurality of antennas into multiple antenna groups, where each antenna group is configured with specific antennas that maintain coherent phase relationships. This segmentation allows the system to manage complexity by organizing antennas into functional units while improving signal transmission efficiency through coordinated group operations.
Solution Approach 2:
The patent applies preliminary action by pre-configuring antenna groups with known phase relationships before signal transmission begins. The base station and UE are provided with information about the co-phase between antenna groups in advance, allowing for efficient signal processing without increasing operational complexity during actual transmission.
2Manufacturing precision
If co-phase information between antenna groups is transmitted, then precoding accuracy is improved, but information transmission overhead increases
Solution Approach 1:
The patent changes the parameter representation by providing co-phase information in a compressed format that captures the essential phase relationships between antenna groups. Instead of transmitting full channel state information, the system transmits only the necessary co-phase parameters, reducing information overhead while maintaining precoding accuracy.
Solution Approach 2:
The patent uses copying by having the UE report antenna group configuration information back to the base station, which then uses this copied information to determine appropriate co-phase values. This copying mechanism allows the base station to infer necessary phase information without requiring direct measurement or extensive information exchange.
3Reliability
If precoding matrices are determined based on co-phase information, then signal quality is improved, but computational complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-determining precoding matrices based on the reported antenna group configuration and co-phase information before actual signal transmission. This allows the UE and base station to have ready-to-use precoding matrices that optimize signal quality without requiring complex real-time computations during transmission.
Solution Approach 2:
The patent changes the computational approach by using the co-phase information to select from pre-computed precoding matrices rather than computing optimal matrices in real-time. This parameter-based selection approach maintains signal quality while significantly reducing computational complexity during active transmission.
Data Source
AI summary
A method by which a terminal transmits a signal according to at least one of the embodiments disclosed in the present specification comprises: reporting, to a network, information about antenna groups configured on the basis of a plurality of antennas in the terminal; receiving, from the network, information about a co-phase between the antenna groups; receiving downlink control information (DCI) for uplink scheduling; and transmitting an uplink signal on the basis of the DCI, wherein a codebook for precoding the uplink signal may be determined on the basis of information, received from the network, about the co-phase between the antenna groups.