480 MHz PPDU Transmission for Low-Latency Wireless LAN
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Solution Overview
Problem
Existing wireless LAN technologies face challenges in supporting wideband transmission and improving throughput, reliability, and reducing latency, particularly in environments requiring increased bandwidth and low latency for real-time traffic.
Innovation Solution
The method involves generating and transmitting a Physical Protocol Data Unit (PPDU) with a 480 MHz bandwidth, composed of three 160 MHz bandwidths, utilizing non-orthogonal frequency division multiple access (non-OFDMA) for enhanced transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional bandwidth transmission is used, then device complexity is reduced, but throughput is limited
Solution Approach 1:
The 480 MHz bandwidth is segmented into three separate 160 MHz bandwidths, allowing the system to achieve wideband throughput while managing complexity through modular processing of each segment independently
2Productivity
If OFDMA transmission is used, then bandwidth utilization is improved, but latency increases for real-time traffic
Solution Approach 1:
The system dynamically selects between OFDMA and non-OFDMA transmission modes based on traffic requirements, using non-OFDMA for low-latency real-time traffic while maintaining the ability to use OFDMA for other traffic types
Data Source
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AI summary
A method and a device for transmitting/receiving a PPDU in a wireless LAN system are disclosed. A method, performed by a first STA, according to an embodiment of the present disclosure may comprise the steps of: generating a PPDU having a bandwidth of 480 MHz; and transmitting the PPDU to a second STA.