Packet Extension for Wireless Processing Time
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Solution Overview
Problem
Current wireless communication protocols, such as IEEE 802.11ax, face challenges in providing sufficient processing time for wireless devices to handle packets while adhering to legacy Short Interframe Space (SIFS) constraints, often requiring additional hardware or faster processing capabilities.
Innovation Solution
The solution involves adding padding or a packet extension to the last symbol of a packet, allowing devices to process the packet without exceeding the SIFS time constraint, thereby reducing the need for additional hardware and optimizing system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the OFDM symbol size is increased four times in 802.11ax, then the processing complexity per symbol increases four times, but the SIFS time remains the same, creating insufficient processing time
Solution Approach 1:
The patent applies preliminary action by performing FFT and other processing operations on the increased OFDM symbol size before the SIFS deadline, allowing the receiver to complete four times the processing workload within the unchanged SIFS time constraint through advance preparation and optimized processing sequences
2Speed
If additional hardware or faster hardware is added to meet SIFS time requirements, then processing capability improves, but device complexity and cost increase
Solution Approach 1:
The patent applies parameter changes by optimizing software processing parameters, algorithms, and operational sequences to achieve four times the processing throughput within the same SIFS time without requiring additional hardware, thereby maintaining device simplicity while improving processing capability
Solution Approach 2:
The patent substitutes mechanical hardware solutions with software-based processing optimizations, replacing the need for additional or faster hardware with optimized FFT algorithms and processing sequences that achieve the required throughput through intelligent software management
Data Source
AI summary
Methods, systems, and apparatuses are described for providing device(s) with additional processing time to process a packet received wirelessly while still meeting the legacy SIFS time constraint. The additional processing time may be achieved by adding, by a device transmitting the packet, padding and/or a packet extension to the last symbol of the packet. The additional processing time provided to the device(s) advantageously reduces the amount of extra hardware that would normally be added to meet the SIFS time constraint. The amount of padding and/or packet extension to be added to the last symbol is balanced to minimize the complexity of the device(s) against the reduction in system efficiency incurred by the device(s).