Contention Based Period Beamforming Synchronization
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Solution Overview
Problem
In wireless communication networks, beamforming between unsynchronized stations often misses the highest quality sector during the antenna sector sweep, leading to suboptimal communication reliability due to the lack of synchronization between the beamforming initiator and responder.
Innovation Solution
A method and system for contention-based period beamforming that synchronizes communications between the beamforming initiator and responder by sending control information to define a precise start time for the beamforming training process, allowing for sector sweep synchronization and continued beamforming without back-off periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If beamforming is performed without synchronization between initiator and responder, then the beamforming process can be initiated independently by each station, but the highest quality sector may be missed during antenna sector sweep
Solution Approach 1:
The patent applies preliminary action by implementing a synchronization phase before the actual beamforming sector sweep. The initiator sends a beamforming request frame and both stations synchronize their clocks and sector sweep timing in advance. This ensures that when the sector sweep begins, both stations are perfectly aligned in time, preventing any sector from being missed due to timing mismatches, thus resolving the contradiction between independent operation and reliable communication.
2Adaptability or versatility
If sector sweep is performed without precise timing synchronization, then stations can operate autonomously, but transmission quality may be suboptimal due to missed sectors
Solution Approach 1:
The patent implements feedback mechanisms where stations exchange beamforming request and response frames that contain timing information and sector sweep parameters. The responder provides feedback about its ready state and the initiator adjusts its timing based on this feedback. This closed-loop feedback system ensures precise synchronization while maintaining autonomous operation, allowing accurate measurement of transmission quality across all sectors.
3Productivity
If beamforming training starts without synchronized timing, then the process can begin immediately, but the start time may not be precisely defined leading to sector omission
Solution Approach 1:
The patent uses preliminary action by establishing a synchronization phase where the initiator sends a beamforming request frame containing the planned start time and sector sweep parameters. The responder acknowledges and confirms the timing arrangement before the actual beamforming training begins. This preliminary timing agreement ensures that when beamforming starts, both stations are precisely synchronized, eliminating sector omissions while maintaining efficient operation.
Data Source
AI summary
Contention based period beamforming includes the establishment of synchronized communications between a beamforming initiator and a beamforming responder to precisely define a start time for beamforming training. Synchronization between the beamforming initiator and beamforming responder begins with the sending of control information to the responder so that the start of the beamforming process will be synchronized. With beamforming training synchronized, beamforming is initiated using the sector sweep process.