Multi-Link PPDU Element Signaling for Lower WLAN Overhead
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Solution Overview
Problem
Existing wireless communication standards, such as IEEE 802.11ax, face challenges in efficiently managing multi-link operations for high throughput and data rates, particularly in multi-link devices (MLDs) that need to transmit and receive information across different links, leading to increased overhead and power consumption.
Innovation Solution
A multi-link device (MLD) operates in multiple links by receiving a physical layer protocol data unit (PPDU) through a first link, which includes information fields for a second link, allowing it to determine the presence and obtain complete element information, thereby reducing frame exchange overhead and enhancing link efficiency and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-link devices transmit element information on a second link through a first link, then link use efficiency is improved and power consumption is reduced, but frame exchange overhead increases
Solution Approach 1:
The patent combines element information from multiple links into a single transmitted PPDU. The MLD aggregates complete element information for both the first link and second link, transmitting it through one link rather than exchanging separate frames for each link, thereby reducing overall frame exchange overhead while maintaining efficient link utilization
Solution Approach 2:
The patent enables a single PPDU to serve multiple functions by carrying element information for multiple links simultaneously. The transmitted PPDU not only conveys information for the receiving link but also provides complete element information for other links, making the communication protocol more versatile and efficient
2Use of energy by moving object
If complete element information for multiple links is transmitted through one link, then power consumption is reduced, but the complexity of information management increases
Solution Approach 1:
The patent segments element information by link identifier, organizing complete element information for each link (first link, second link, etc.) in a structured manner within the PPDU. This segmentation allows the receiving MLD to efficiently parse and manage information for different links without being overwhelmed by the overall complexity
Solution Approach 2:
The patent introduces an information field structure that acts as an intermediary between multiple links and the transmission medium. This structured field organization (with link identifiers and complete element information sections) simplifies the management complexity by providing a clear intermediary layer for information handling
Data Source
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AI summary
According to various embodiments, a multi-link device (MLD) operating in a plurality of links can receive a PPDU through a first link from among the plurality of links. The PPU can include a first information field related to a second link that is differentiated from the first link. The first information field related to a second link can include a second information field related to a link identifier of a second link and a third information field related to whether all pieces of element information related to a second link is included in the PPDU.