Trigger Frame PPDU Aggregation for Cross-Version WLAN Throughput
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Solution Overview
Problem
Existing wireless LAN systems face challenges in efficiently transmitting and receiving physical layer protocol data units (PPDUs) across different versions, leading to increased latency and reduced throughput.
Innovation Solution
A method and device for transmitting and receiving merged PPDUs based on a trigger frame, utilizing a common info field that includes an aggregated PPDU (A-PPDU) subfield to configure multiple TB PPDUs, enabling efficient resource allocation and support for different PPDU versions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional separate PPDU transmission methods are used for different versions, then compatibility with existing systems is maintained, but latency increases and throughput decreases
Solution Approach 1:
The patent merges multiple TB PPDUs of different versions into a single aggregated PPDU structure. The trigger frame includes an aggregated PPDU related subfield that configures multiple TB PPDUs to be transmitted together, allowing simultaneous handling of different PPDU versions in one transmission opportunity, thereby reducing latency and improving throughput
Solution Approach 2:
The trigger frame's common info field is designed with universal configurability to support multiple PPDU versions through the aggregated PPDU related subfield. This subfield can indicate configurations for different TB PPDU types, enabling the system to universally handle various PPDU formats without requiring separate transmission mechanisms for each version
2Adaptability or versatility
If separate transmission mechanisms are used for different PPDU versions, then version-specific optimization is achieved, but device complexity increases
Solution Approach 1:
The trigger frame structure serves multiple functions by incorporating an aggregated PPDU related subfield in the common info field. This single structure can configure multiple TB PPDUs of different versions, eliminating the need for separate configuration mechanisms for each PPDU type and reducing overall system complexity
Solution Approach 2:
The configuration information is segmented into the aggregated PPDU related subfield within the trigger frame's common info field. This segmentation allows efficient indication of multiple TB PPDU configurations in a structured manner, reducing the complexity of managing separate configuration structures for different PPDU versions
Data Source
AI summary
A trigger frame-based PPDU transmission/reception method and device in a wireless LAN system are disclosed. The method performed by means of a station (STA) in a wireless LAN system, according to one embodiment of the present disclosure, may comprise the steps of: receiving, from an access point (AP), a trigger frame including a common info field; and transmitting, to the AP, a TB PPDU corresponding to one of one or more TB PPDUs triggered by means of the trigger frame. The common information field comprises an A-PPDU related subfield, and a configuration of the one or more TB PPDUs can be indicated on the basis of the A-PPDU related subfield and at least one other subfield included in the common information field.