Enhanced Beam Refinement Protocol for Parallel Antenna Training
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing bandwidth and beamforming training across devices with different operating characteristics and communication standards, particularly in multi-user multiple-input multiple-output (MU-MIMO) environments, leading to limited bandwidth and difficulty in communication.
Innovation Solution
The implementation of an enhanced beam refinement protocol (EBRP) that includes a packet format supporting single input single output (SISO), MIMO, and MU-MIMO, utilizing orthogonal sequences and automatic gain control (AGC) for concurrent training of multiple antennas, allowing simultaneous transmission to multiple receiving stations and enabling efficient beamforming training across different devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional beamforming training protocols are used, then communication between devices is established, but bandwidth utilization is limited and response times are slower due to sequential training processes
Solution Approach 1:
The beamforming training protocol is segmented into multiple parallel training streams, where each stream independently trains a specific antenna combination. This segmentation allows simultaneous execution of multiple training operations that were previously performed sequentially, thereby increasing bandwidth utilization and reducing overall training time.
Solution Approach 2:
Multiple beamforming training operations are merged into a single unified protocol framework. The enhanced protocol combines training for multiple antennas and spatial streams into one coordinated process, enabling parallel execution while maintaining synchronization, thus improving productivity without sacrificing communication reliability.
2Adaptability or versatility
If beamforming training is performed for multiple antennas and streams, then communication capability is enhanced, but device complexity increases due to different operating characteristics and communication standards
Solution Approach 1:
The enhanced beamforming training protocol is designed as a universal framework that can handle single-antenna, multi-antenna, single-stream, and multi-stream configurations through a single unified process. This multi-functionality allows the system to adapt to different device capabilities and communication standards without requiring separate training protocols for each scenario, thereby reducing device complexity while maintaining versatility.
Solution Approach 2:
The protocol dynamically adjusts the training configuration based on the capabilities of the communicating devices. It can automatically scale between different numbers of antennas and streams, selecting the appropriate training intensity and complexity level, which reduces the burden on devices with limited capabilities while still enabling advanced features when available.
3Measurement precision
If sequential beamforming training is used for each antenna, then training accuracy is maintained, but training time increases and bandwidth is underutilized
Solution Approach 1:
The training process is segmented into independent parallel streams, where each stream maintains its own training sequence and measurement process. This segmentation allows simultaneous execution of multiple training operations without interference, preserving the accuracy of individual measurements while dramatically reducing the total training time through parallel execution.
Solution Approach 2:
The protocol enables continuous training operations by eliminating idle time between sequential training steps. Multiple training streams operate continuously and concurrently, ensuring that the communication channels are constantly being trained and optimized without interruption, thereby maintaining high training accuracy while maximizing bandwidth utilization.
Data Source
AI summary
Apparatus, computer readable media, and methods for enhanced beamforming training in a wireless local area network are disclosed. An apparatus of a access point or station is disclosed. The apparatus including processing circuitry where the processing circuitry is configured to encode an EBRP packet comprising a first portion comprising an indication of a first number of transmit antenna training settings (N-TX), and an indication of a second number of receive training subfields per N-TX settings (N-RX), and a second portion comprising a third number of training subfields. The third number may be less than or equal to N-TX times N-RX. The processing circuitry may be configured to cause the first portion of the EBRP packet to be transmitted and cause the second portion to be transmitted, where two or more of the third number of training subfields are to be transmitted simultaneously using different antennas and orthogonal sequences.