LoS MIMO Sidelink Layers for Higher Transfer Rates
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Solution Overview
Problem
Existing wireless communication systems struggle to provide enhanced mobile broadband and ultra-reliable low latency communications in environments with line-of-sight conditions, particularly in next-generation wireless communication systems.
Innovation Solution
Implementing a sidelink communication method based on line-of-sight multiple input multiple output (LoS MIMO) that supports LoS-based multiple layer transmission and reception using a plurality of transmission and reception antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional MIMO is used in line-of-sight environments, then communication reliability is maintained, but transfer rate is limited due to inability to form multiple layers
Solution Approach 1:
The patent segments the transmission signal into multiple independent layers (first layer and second layer), each carrying separate data streams. This segmentation enables parallel transmission through multiple antennas, increasing the transfer rate while maintaining reliability through diverse transmission paths.
Solution Approach 2:
The patent introduces spatial dimensionality by transmitting multiple layers simultaneously through different antenna combinations. The first layer uses one set of antenna ports while the second layer uses another set, creating multi-dimensional transmission space that overcomes the single-layer limitation in LoS environments.
2Productivity
If multiple layers are formed in LoS environment, then transfer rate is improved, but system complexity increases
Solution Approach 1:
The patent changes the transmission parameter by configuring different antenna port combinations for different layers. The base station configures first antenna ports for the first layer and second antenna ports for the second layer, allowing multiple layers to be formed without requiring completely new system architecture.
Solution Approach 2:
The patent makes the antenna system multi-functional by enabling the same antenna array to support both single-layer and multi-layer transmissions. The system can adaptively switch between different transmission modes based on channel conditions, maintaining universality while achieving enhanced performance when needed.
3Reliability
If configuration information for LoS MIMO is received and applied, then communication reliability and transfer rate are improved, but signaling overhead increases
Solution Approach 1:
The base station performs preliminary configuration by pre-configuring the UE with multiple antenna port groups and their corresponding layer mappings. This preliminary action allows the UE to be ready for multi-layer transmission without requiring extensive real-time signaling, reducing overhead while maintaining reliability.
Data Source
AI summary
A LoS MIMO system can be applied to all frequency bands used in general mobile communication. Particularly, the LoS MIMO system is very important in high frequency bands (for example, 10 GHz-100 GHz, or three-digit GHz OR Tera-Hz (THz)). Therefore, the present specification proposes a method and a device for performing sidelink communication on the basis of LoS MIMO applicable to a next generation wireless communication system.