Antenna Port Selection for MIMO Line-of-Sight Throughput
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Solution Overview
Problem
Existing MIMO communication systems cannot support multi-stream data transmission between a base station and mobile user equipment in direct path scenarios, limiting system throughput due to low channel rank and high correlation between subchannels.
Innovation Solution
A data transmission method and device that dynamically selects an appropriate antenna port based on location information, including line of sight transmission distance and relative angle, to enable multi-stream data transmission by using a mapping relationship or channel state information, allowing for adaptive antenna port selection to support mobile user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transmission distance is increased to reduce subchannel correlation, then multi-stream transmission can be achieved, but the system cannot support mobile user equipment with changing locations
Solution Approach 1:
The patent applies dynamics by making the antenna port selection adaptive to changing transmission distances and relative angles. Instead of using fixed antenna ports, the system dynamically determines which antenna ports to use based on real-time location information of the mobile user equipment, allowing multi-stream transmission to be maintained as the user moves
Solution Approach 2:
The patent changes the parameter of antenna port selection based on location information parameters (transmission distance and relative angle). By mapping different location parameters to different antenna port configurations, the system adapts to mobile user equipment while maintaining the ability to achieve multi-stream transmission
2Adaptability or versatility
If antenna ports are fixed for multi-stream transmission, then the transmission setup is simple, but the system cannot adapt to mobile user equipment at different locations
Solution Approach 1:
The system performs self-service by automatically determining the appropriate antenna ports based on location information without requiring manual configuration. The mapping relationship between location parameters and antenna ports is pre-established, allowing the system to autonomously adapt to different user locations
Solution Approach 2:
The patent applies preliminary action by pre-establishing mapping relationships between location information and antenna port selections. This preconfiguration allows the system to quickly adapt to mobile user equipment without complex real-time calculations, maintaining ease of operation while improving location adaptability
Data Source
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AI summary
The present invention provides a data transmission method and device. The method includes: performing, by the first communications equipment, multi-stream data transmission with the second communications equipment according to a first antenna port, where the first antenna port is an antenna port, of the first communications equipment, satisfying a condition for multi-stream data transmission between the first communications equipment and the second communications equipment. The method provided in embodiments of the present invention improves applicability of a multi-stream data transmission system for line of sight propagation.