Simultaneous Beamforming Training via Sub-Time Resource Indication
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Solution Overview
Problem
In millimeter-wave communication systems, efficient beamforming training is challenging due to the severe signal attenuation and large path loss, especially in mesh distribution networks where multiple access points or stations need to perform beam alignment simultaneously.
Innovation Solution
The proposed method involves generating a first frame by a sending apparatus that includes time resource indication information, specifically sub-time resource indication information for each response apparatus, indicating the time for feedback and acknowledgment. This allows multiple response apparatuses to perform beamforming training simultaneously with the sending apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming training is performed sequentially with one access point at a time, then beam alignment can be achieved, but the training time increases and communication efficiency decreases
Solution Approach 1:
The patent combines multiple beamforming training processes into a single simultaneous operation. The access point sends first frames to multiple response apparatuses at the same time, and collects feedback frames and acknowledgment frames concurrently, merging what would traditionally be sequential training operations into one parallel process.
Solution Approach 2:
The access point performs preliminary actions by sending first frames to multiple response apparatuses before actually needing to establish communication. The time resource indication information is prepared and sent in advance, allowing all response apparatuses to be ready for simultaneous feedback transmission.
2Productivity
If time resource indication information is included in the first frame, then simultaneous beamforming training can be performed, but the frame structure becomes more complex
Solution Approach 1:
The time resource indication information is segmented into multiple sub-time resource indication fields, with each field corresponding to a specific response apparatus. This segmentation allows the complex time resource scheduling information to be organized in a structured, manageable way that can be efficiently processed by each apparatus.
Solution Approach 2:
The first frame structure is designed to be universal, capable of addressing multiple response apparatuses simultaneously. The frame can be sent to one or more response apparatuses depending on the scenario, making the structure flexible and adaptable to different network configurations without requiring separate frame types for each case.
3Reliability
If the access point sends first frames to multiple response apparatuses simultaneously, then training effectiveness improves, but the complexity of coordinating feedback and acknowledgment increases
Solution Approach 1:
The patent implements a feedback mechanism where response apparatuses send feedback frames and acknowledgment frames back to the access point at designated time resources. This feedback loop allows the access point to verify successful beamforming training and coordinate the communication process, reducing coordination complexity through structured information exchange.
Data Source
AI summary
This application provides an information indication method and an apparatus. In this application, a sending apparatus generates and sends a first frame, the first frame includes at least one piece of sub-time resource indication information, and each piece of sub-time resource indication information is in a one-to-one correspondence with one of at least one response apparatus. In addition, each piece of sub-time resource indication information includes a time resource at which the corresponding response apparatus sends feedback information for the first frame to the sending apparatus and a time resource at which the sending apparatus sends acknowledgment information for the feedback information to the corresponding response apparatus, so that the at least one response apparatus and the sending apparatus that sends the first frame can simultaneously perform beamforming training, thereby improving effectiveness of beamforming training performed on the sending apparatus and the at least one response apparatus.