Multi-Link Beamforming Training for 60 GHz Networks
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Solution Overview
Problem
The implementation of multiple-user MIMO (MU-MIMO) transmission in 60 GHz wireless networks requires more accurate beamforming and increased beamforming training, leading to significant overhead in wireless channel resources and power usage.
Innovation Solution
The use of a multi-link beamforming training packet that allows for simultaneous training of multiple wireless links, reducing the need for frequent and precise beamforming training by incorporating a format designed for simultaneous training of multiple links, including a preamble, header, and training fields, which enables efficient communication across multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MU-MIMO transmission is implemented with traditional beamforming training, then data rate and efficiency are improved, but overhead in wireless channel resources and power usage increases significantly
Solution Approach 1:
The patent combines multiple beamforming training operations into a single unified training process. The PCP/AP performs beamforming training with multiple STAs simultaneously by transmitting training packets to multiple STAs in different spatial directions at the same time, merging what would traditionally be separate sequential training operations into one concurrent operation, thereby reducing total training overhead and power consumption
Solution Approach 2:
The patent implements dynamic beamforming training where the PCP/AP adaptively adjusts training parameters based on feedback from multiple STAs. The system dynamically selects which STAs to train together, adjusts training packet transmission power and timing, and optimizes the training process in real-time based on channel conditions and STA responses, reducing unnecessary training overhead
2Productivity
If MU-MIMO transmission is implemented with traditional beamforming training, then data rate and efficiency are improved, but overhead in wireless channel resources increases significantly
Solution Approach 1:
The patent merges multiple beamforming training sequences into a single concurrent training operation. By transmitting training packets to multiple STAs simultaneously in different spatial directions and processing feedback from all STAs in one unified process, the system reduces the total time and channel resources required compared to traditional sequential training where each STA would be trained separately
Solution Approach 2:
The patent performs preliminary beamforming training during which the PCP/AP transmits training packets to multiple STAs and receives feedback before actual MU-MIMO data transmission begins. This preliminary training establishes the spatial channels and beamforming weights in advance, allowing efficient concurrent data transmission without requiring additional training overhead during the data phase
Data Source
AI summary
Various embodiments may be generally directed to multi-link beamforming training techniques for 60 GHz wireless networks. In some embodiments, a 60 GHz-capable device in a 60 GHz wireless network may train wireless links with multiple other 60 GHz-capable devices simultaneously. In various embodiments, the multiple wireless links may be trained simultaneously using a multi-link beamforming training packet that comprises a format designed for simultaneous training of multiple wireless links. Other embodiments are described and claimed.