Beamformer Weight Feedback Granularity Control
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Solution Overview
Problem
In existing beamforming technologies, the beamformer cannot control the weight feedback granularity, leading to inefficient management of users and increased costs in multi-user scenarios.
Innovation Solution
The method involves transmitting a weight feedback granularity requirement value from the beamformer to the beamformee, allowing the beamformee to measure and return a beamforming weight with the specified granularity in a very high throughput compressed beamforming (VCBF) frame, enabling the beamformer to control the weight feedback granularity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the weight feedback granularity is controlled by the beamformee through VCBF feedback, then the beamformee has autonomy in determining feedback parameters, but the beamformer cannot control the weight feedback granularity
Solution Approach 1:
The patent inverts the control direction by having the beamformer (controller) specify the weight feedback granularity requirement in the NDPA frame, rather than having the beamformee (controlled device) determine it autonomously. This inversion enables the beamformer to control the feedback granularity while maintaining beamformee autonomy through standardized protocol compliance.
Solution Approach 2:
The patent introduces a new parameter 'weight feedback granularity requirement value' that can be dynamically configured by the beamformer through capability interaction information or NDPA frames. This parameter change enables flexible control of feedback precision without fixing the granularity to a constant value, resolving the contradiction between control capability and adaptability.
2Productivity
If the beamformer controls the weight feedback granularity, then multi-user grouping management and pairing management can be conveniently performed with reduced cost, but the existing scheme does not provide beamformer control capability
Solution Approach 1:
The patent implements preliminary action by having the beamformer specify the weight feedback granularity requirement in advance through capability interaction information or NDPA frames before the actual sounding and feedback process. This preliminary specification enables efficient multi-user management by pre-determining the feedback granularity needed for grouping and pairing operations.
Solution Approach 2:
The patent enables dynamic parameter changes by allowing the beamformer to adjust the weight feedback granularity requirement value based on multi-user management needs. This parameter flexibility supports efficient grouping and pairing management while adapting to different operational scenarios.
3Device complexity
If the weight feedback granularity is determined by the beamformee, then the feedback process is simple, but the beamformer cannot control time by adjusting the weight feedback granularity when transmission opportunity duration is insufficient
Solution Approach 1:
The patent introduces dynamics by making the weight feedback granularity requirement value adjustable by the beamformer based on available transmission opportunity duration. When time is insufficient, the beamformer can reduce the granularity requirement, enabling flexible adaptation to time constraints without increasing feedback process complexity.
Solution Approach 2:
The patent enables parameter changes by allowing the beamformer to modify the weight feedback granularity requirement value dynamically. This parameter adjustment mechanism resolves the time loss issue by adapting the feedback precision to match the available transmission opportunity duration.
Data Source
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AI summary
Provided in the embodiments of the present invention are a method, a device and a system for setting a weight feedback granularity, relating to communication technologies, which solve the problem that a beamformer can not control a beamforming weight feedback granularity. The method comprises: receiving a null data packet announcement (NDPA) frame comprising a weight feedback granularity requirement value transmitted by the beamformer; receiving a null data packet (NDP) frame transmitted by the beamformer, and measuring the beamforming weight by using the weight feedback granularity requirement value as a granularity; and transmitting a very high throughput compressed beamforming (VCBF) frame to the beamformer, wherein the very high throughput compressed beamforming (VCBF) frame comprises the beamforming weight using the weight feedback granularity requirement value as the granularity. The embodiments of the present inventions are suitable for setting a weight feedback granularity.