Adaptive Beam Training Sequence for Wireless Network Setup
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Solution Overview
Problem
Traditional wireless network systems face inefficiencies in setting up and managing directional communications, particularly in crowded environments, due to the need for extensive beam refinement processes that consume time and resources, even when channel conditions are better than worst-case scenarios.
Innovation Solution
Implementing a tailored beamforming method that adapts the training sequence length based on acquired channel parameters and antenna calibration, allowing for sequential beam transmissions and refined control vectors to quickly determine optimal beam settings, thereby reducing setup time and overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional omni-directional transmission systems are used, then system complexity is low and ease of operation is high, but signal strength is insufficient and data rates are limited at distances over a few meters
Solution Approach 1:
The patent implements dynamic beamforming where the transmitter and receiver continuously adjust their beam directions based on real-time channel conditions and device movement. The system transitions from static omni-directional transmission to dynamic directional transmission, allowing signal strength to be maintained at distances over a few meters while managing complexity through adaptive algorithms that respond to changing environmental conditions
2Productivity
If directional transmission systems with beam refinement are implemented, then data rates increase to several Gigabits per second and signal strength improves, but setup time increases and the system becomes slower and more expensive
Solution Approach 1:
The patent performs preliminary beam calibration and channel characterization during the initial association phase between device and controller. By pre-establishing beam directions and storing channel state information before actual data transmission begins, the system avoids time-consuming beam refinement during active communication, thereby achieving high data rates without significant setup time penalties
Solution Approach 2:
The patent implements feedback mechanisms where the receiver sends channel quality indicators and beam direction feedback to the transmitter. This continuous feedback loop allows the system to maintain optimal beam alignment and adapt to channel changes without requiring extensive re-calibration, thus preserving high data rates while minimizing setup overhead
3Reliability
If extensive beam refinement processes are used in crowded network environments, then communication reliability improves, but overhead increases and setup time increases for each device joining or moving in the network
Solution Approach 1:
The patent applies local quality optimization by performing beam refinement and channel characterization only for specific spatial sectors or directions where devices are located. Instead of exhaustive omnidirectional beam scanning, the system focuses computational resources on localized areas, maintaining communication reliability in crowded environments while reducing overall system overhead through spatially-selective processing
Data Source
AI summary
A beamforming method is disclosed that includes performing sequential beam transmissions in multiple directions and receiving replies to the transmissions (i.e. a sector search). The received transmissions can include information or channel parameters such as direction of arrival, signal to noise ratio, signal strength, etc., for each sector. Utilizing the parameters transmitted or fed back by the receiver, the transmitter can store control vectors that dictate a beam that can be utilized to commence a beam refinement procedure. In addition, the parameters can be utilized to select and implement a custom sequence to refine the communication channel between the device and the controller. The custom sequence can significantly reduce the time required to create a channel with acceptable qualities such that efficient high speed network communications can be conducted. Other embodiments are also disclosed.