480 MHz PPDU Multiplexing for Single-STA Throughput Gains
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Solution Overview
Problem
Existing wireless LAN technologies face challenges in efficiently transmitting and receiving multiple physical service data units (PSDUs) for a single receiving device, which affects throughput and latency.
Innovation Solution
A method and apparatus for transmitting and receiving a physical protocol data unit (PPDU) comprising multiple PSDUs, enabling single user and multi-layer transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple PSDUs are transmitted for a single receiving device, then throughput is improved, but device complexity increases
Solution Approach 1:
The patent segments the data transmission by dividing it into multiple PSDUs (Physical Service Data Units) that are multiplexed within a single PPDU (Physical Protocol Data Unit). This allows multiple data streams to be transmitted simultaneously to a single receiving device, thereby improving throughput while maintaining manageable complexity through structured segmentation
Solution Approach 2:
The patent merges multiple PSDUs into a single PPDU for transmission. By combining multiple data units into one transmission frame with a unified preamble and structure, the system achieves higher throughput without proportionally increasing device complexity, as the receiving device processes one consolidated unit rather than multiple separate transmissions
2Loss of time
If multiple PSDUs are transmitted for a single receiving device, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent prepares multiple PSDUs in advance and multiplexes them into a single PPDU before transmission. This preliminary organization of multiple data units allows for efficient simultaneous delivery, reducing the total time required compared to sequential transmission, while the preprocessing step manages the complexity of handling multiple data streams
Solution Approach 2:
The patent enables continuous transmission of multiple PSDUs within a single PPDU, eliminating gaps between separate transmissions. This continuous multiplexed transmission reduces overall latency by keeping the communication channel continuously utilized, while the structured PPDU format maintains processing efficiency
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.