Wireless Data Transmission Padding for Processing Time Extension
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Solution Overview
Problem
Wireless communication devices often face challenges in processing high-bandwidth transmissions within the limited processing time available, particularly in wireless local area networks (WLANs), as they may not have sufficient processing capacity to handle the increased data rates of newer standards like IEEE 802.11ax within the established short inter-frame space (SIFS) timeframe.
Innovation Solution
The solution involves selectively adding padding to the end of data transmissions to provide additional processing time for receiving devices to process the data and transmit feedback, by determining the amount of padding based on the ratio of data bits to the total capacity and adding a frame extension based on the number of useful coded data bits, allowing for concurrent processing and feedback transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high bandwidth transmissions are used to increase data rate, then communication speed is improved, but processing time required increases beyond the available SIFS timeframe
Solution Approach 1:
The transmitting device performs receive processing in advance during the data transmission time period. Specifically, the AP processes received data from multiple STAs concurrently with the ongoing transmission, preparing processing results before the SIFS period begins. This preliminary action allows the AP to complete processing without extending the SIFS duration, thus maintaining high data rates while providing sufficient processing time.
Solution Approach 2:
The patent introduces a frame extension field that adds a time dimension to the transmission frame structure. By extending the frame beyond the traditional SIFS boundary, the system creates additional processing time without fundamentally changing the high bandwidth transmission mode. This dimensional extension allows receivers to process high-volume data at standard data rates while maintaining overall high throughput.
2Productivity
If processing time is extended to accommodate high bandwidth communications, then processing capability is improved, but transmission time increases
Solution Approach 1:
The patent merges the data transmission function with the receive processing function by allowing the AP to process received data concurrently with ongoing transmissions. Multiple processing operations are combined into the same time period, eliminating the need for separate processing intervals. This merging enables high processing capability without proportionally increasing total transmission time.
Solution Approach 2:
The system maintains continuous useful action by ensuring that receive processing occurs without interruption during the data transmission period. Rather than pausing transmission for processing, the AP continuously processes incoming data streams, maximizing resource utilization and minimizing idle time that would otherwise extend total transmission duration.
3Duration of action of moving object
If padding is added to extend processing time, then processing time is improved, but frame size increases
Solution Approach 1:
The patent changes the temporal parameter of the frame structure by introducing a frame extension field that adds time duration without adding data content. Unlike traditional padding that increases frame size, this extension modifies the time parameter directly, allowing receivers to allocate additional processing time proportionally to the extended duration rather than to increased data volume.
Data Source
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AI summary
A wireless device may selectively add padding to an end of a data transmission in order to provide adequate time for a receiving device to process the transmitted data and transmit feedback related to the transmitted data. A wireless device may identify a total amount of data capable of being transmitted in a transmission, and determine a number of data bits to be transmitted in the transmission. An amount of padding may be selected based on a proportion of the total amount of data capable of being transmitted and the number of data bits. In some examples, a preamble for a feedback transmission may be transmitted concurrently with processing of the received transmission.