Wireless Device ACK Processing for MAC Header and Payload Verification
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately verifying medium access control (MAC) headers and payloads within the short interframe spacing (SIFS) time interval, leading to potential denial of service (DOS) attacks and inaccurate feedback.
Innovation Solution
A wireless device is configured to output an indication of its processing capability, which includes processing latency and the threshold quantity of MAC protocol data units (MPDUs) that can be verified within a SIFS time interval. This allows the device to perform MAC header and payload verification accordingly and transmit acknowledgment (ACK) frames in accordance with the processing capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If MAC header and payload verification is performed within SIFS time interval, then feedback accuracy is improved, but processing capability requirements increase
Solution Approach 1:
The receiving device performs MAC header verification and payload verification in advance within the SIFS time interval before transmitting the ACK frame. This preliminary action ensures that the feedback accuracy is improved by providing verified reception status, while the processing is completed beforehand to meet the timing constraints.
Solution Approach 2:
The patent introduces new parameters to characterize processing capability: processing latency for MAC header verification and payload verification, and threshold quantity of MPDUs supported within SIFS. By changing these parameters, the system can adapt the verification process to match the receiving device's actual processing capabilities while maintaining feedback accuracy.
2Productivity
If processing latency is reduced to meet SIFS deadline, then productivity is improved, but verification accuracy may deteriorate
Solution Approach 1:
The verification processes (MAC header verification and payload verification) are performed as preliminary actions within the SIFS time interval. By structuring the verification to complete before the ACK transmission deadline, the system achieves both high processing speed (meeting SIFS requirements) and high verification accuracy (complete verification before feedback).
Solution Approach 2:
The verification process is segmented into distinct stages: MAC header verification and payload verification. Each segment has its own processing latency requirement and can be completed within the SIFS interval. This segmentation allows the system to manage processing complexity while ensuring both speed and accuracy.
3Productivity
If threshold quantity of MPDUs is increased within SIFS, then productivity is improved, but processing latency increases
Solution Approach 1:
The patent introduces the parameter 'threshold quantity of MPDUs supported for verification within SIFS' to quantify processing capability. By adjusting this parameter based on the receiving device's actual performance, the system can optimize the number of MPDUs processed within SIFS, balancing throughput improvements against the increasing processing latency that results from handling more units.
Data Source
AI summary
This disclosure provides methods, components, devices, and systems for acknowledgment (ACK) processing associated with medium access control (MAC) header verification, payload verification, or both. Some aspects more specifically relate to a first wireless device advertising a processing capability associated with performing MAC protocol data unit (MPDU) verification, including MAC header verification, payload verification, or both. In some implementations, the processing capability may include a processing latency to perform the verification, a threshold quantity of MPDUs supported for the verification within a short interframe spacing (SIFS) time interval, or both. The first wireless device may transmit an indication of the processing capability to a second wireless device. In some implementations, the second wireless device may transmit MPDUs to the first wireless device in accordance with the processing capability. Additionally, or alternatively, the first wireless device may transmit an ACK frame for the MPDUs in accordance with the processing capability.