BRP Tracking Time Limit for Beamforming Response Timing

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Solution Overview

Problem

Current beam tracking mechanisms in wireless communication systems, such as those specified in IEEE 802.11ad, face challenges in ensuring timely and predictable responses during the Beam Refinement Protocol (BRP), particularly when BRP responses are sent in separate link accesses, leading to potential performance losses due to unpredictable timing.

Innovation Solution

Implementing a BRP tracking time limit mechanism, where wireless stations negotiate and set a BRP tracking time limit value to ensure that BRP responses are sent within a predetermined time frame, thereby maintaining the integrity of beam tracking feedback and preventing performance losses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If BRP responses are sent in separate link accesses, then the beam tracking feedback can be transmitted, but the timing becomes unpredictable leading to performance losses

Engineering Contradiction:

Improvebeam tracking feedback integrityVSAvoidresponse timing predictability

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by establishing a BRP tracking time limit before the actual beam tracking process. This time limit is negotiated between stations and stored as a reference value, ensuring that subsequent BRP responses can be evaluated against a predetermined timing criterion, thus avoiding unpredictable delays

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the BRP tracking time limit based on negotiated values between stations. The time limit is not fixed but can be modified through capability element exchange, allowing the system to adapt timing parameters to specific operational conditions while maintaining predictability

Inventive Principle:

Principle #15Dynamics

2Loss of time

If a BRP tracking time limit is implemented, then response timing is controlled, but additional negotiation and comparison operations are required

Engineering Contradiction:

Improveresponse timing controlVSAvoidprotocol negotiation complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The BRP tracking time limit mechanism is integrated into the existing capability element exchange process. The same negotiation framework used for other beamforming parameters is also used for time limit negotiation, making the system multi-functional without adding separate complex procedures

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system implements feedback by comparing the actual time elapsed since the BRP request against the stored time limit value. This feedback mechanism ensures that responses exceeding the time limit can be identified and handled appropriately, maintaining timing control through continuous monitoring

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11929816B2Apparatus, system and method of beamforming

Publication Date: 2024.03.12 INTEL CORP

AI summary

Some demonstrative embodiments include apparatuses, devices, systems and methods of beamforming. For example, a responder station may process a received Beam Refinement Protocol (BRP) request including a beam tracking request from an initiator station; and select whether or not to transmit a BRP response including beam tracking feedback, in response to the BRP request, based on a comparison between a time period and a BRP tracking time limit, the time period being based on a timing of the BRP request and a timing of the BRP response.