Antenna Array Control via Pre-calculated Indices for MU-MIMO
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Solution Overview
Problem
Conventional methods for controlling antenna arrays in MU-MIMO wireless communication systems are inefficient, leading to prolonged setup times and inadequate interference mitigation and communication range due to the inability to quickly adapt to changing user groups.
Innovation Solution
A wireless communication device that generates multi-user and single-user antenna indices based on characteristic parameter tables, allowing for simultaneous data transmission to multiple devices in MU-MIMO mode and individual transmission in SU-MIMO mode, thereby reducing setup time and enhancing interference mitigation and communication range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the conventional method for controlling the antenna array is used to set the antenna index through training operation, then the antenna array can be configured for SU-MIMO transmission, but the access point spends a large amount of time to complete setting the antenna index, resulting in inability to transmit data to multiple UEs simultaneously in MU-MIMO mode
Solution Approach 1:
The patent pre-calculates and stores multiple antenna index configurations (first antenna index for SU-MIMO, second antenna index for MU-MIMO) in advance based on different transmission modes. When switching between SU-MIMO and MU-MIMO modes, the access point directly retrieves the corresponding pre-configured antenna index from storage without performing time-consuming training operations, thus resolving the contradiction between transmission efficiency and setup time
Solution Approach 2:
The patent implements dynamic switching between different antenna index configurations based on the current transmission mode. The system maintains multiple antenna index sets and dynamically selects the appropriate one (first antenna index for single-user, second antenna index for multi-user) according to whether SU-MIMO or MU-MIMO mode is active, enabling rapid adaptation without retraining
2Adaptability or versatility
If the antenna array is configured before transmitting data to UEs in MU-MIMO mode, then the system can support multi-user simultaneous transmission, but the access point cannot achieve good interference mitigation effect and communication range due to insufficient time for proper antenna configuration
Solution Approach 1:
The patent pre-configures the second antenna index specifically optimized for MU-MIMO transmission before actual data transmission begins. This pre-configuration ensures that when MU-MIMO mode is activated, the antenna array is already properly configured for multi-user simultaneous transmission, achieving both high adaptability and reliable interference mitigation without requiring time-consuming setup during active transmission
Data Source
AI summary
A method for controlling an antenna array is provided, which includes following steps. Associations with a plurality of mobile devices are established, and at least one characteristic parameter table corresponding to the mobile devices is generated. When a plurality of transmission request signals are received simultaneously and the mobile devices are divided into a user group, a multi-user antenna index of the antenna array is generated based on the at least one characteristic parameter table, and a plurality of data streams corresponding to the mobile devices are transmitted simultaneously through the antenna array. When the transmission request signals are received simultaneously and the mobile devices are not divided into the user group, a single-user antenna index of the antenna array is generated based on the at least one characteristic parameter table, and the data streams corresponding to the mobile devices are transmitted one-by-one through the antenna array.