Precoded SRS Grouping for MIMO Beam Direction and Complexity
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Solution Overview
Problem
In wireless communication systems, particularly in MIMO environments, existing technologies face challenges in efficiently managing multiple antennas and transceivers, leading to increased complexity and resource burden, as well as limitations in beam direction and simultaneous transmission capabilities.
Innovation Solution
The method involves generating and transmitting precoded SRS (sounding reference signals) based on the number of antenna elements coupled with transceivers, allowing for grouped SRS transmission to a base station, which enables the identification of port groups capable of simultaneous transmission, optimizing resource use and beam formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antenna elements are coupled with multiple transceivers for MIMO transmission, then signal transmission capability and beam direction diversity are improved, but device complexity and resource burden on user equipment increase
Solution Approach 1:
The patent segments the multiple antenna elements into N groups, where each group is coupled with one transceiver. This segmentation allows the system to manage complexity by organizing antenna elements into manageable groups while maintaining multiple simultaneous transmission capabilities across different beam directions.
Solution Approach 2:
The patent introduces a new dimension of organization by grouping antenna elements spatially and functionally. Instead of treating each antenna element independently, the system creates N groups that can be simultaneously activated, adding a dimensional layer to the MIMO transmission architecture that improves adaptability without linearly increasing complexity.
2Measurement precision
If all antenna elements are used for simultaneous SRS transmission, then measurement precision and channel estimation accuracy are improved, but resource consumption and transmission burden increase
Solution Approach 1:
The patent enables partial action by allowing the base station to request SRS transmission from only N groups out of the total antenna element groups. This partial transmission approach maintains channel estimation accuracy for the selected beam directions while reducing the overall resource consumption and transmission burden compared to requiring all antenna elements to transmit simultaneously.
Solution Approach 2:
The system performs preliminary grouping of antenna elements into N groups before transmission. This preliminary organization allows the base station to select specific groups for SRS transmission based on current channel conditions and resource availability, optimizing the balance between measurement precision and resource consumption in advance.
3Productivity
If the number of transceivers is increased to support more antenna elements, then simultaneous transmission capability is improved, but power consumption and cost increase
Solution Approach 1:
The patent makes each transceiver universal by designing it to be capable of coupling with multiple antenna element groups. Each transceiver can serve multiple groups sequentially or simultaneously, providing multi-functionality that maintains high simultaneous transmission capability while reducing the total number of transceivers required, thereby lowering power consumption and cost.
Data Source
AI summary
The present invention relates to a method for transmitting, by a terminal, a signal in a wireless communication system supporting Multiple Input Multiple Output (MIMO) and an apparatus therefor. Specifically, the method comprises the steps for: generating precoded sounding reference signals (SRS) on the basis of N antenna elements combined with M transceivers (where M and N are natural numbers, M<N); and transmitting, to a base station, information on grouped SRSs among the precoded SRSs, wherein the grouped SRSs are associated with SRS ports that the terminal can simultaneously transmitted through the M transceivers.