Multi-AP Low-Latency Traffic Signaling in TWT Coordination
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Solution Overview
Problem
Existing technologies have not adequately addressed the method for efficiently managing low-latency traffic signals in Multi-Access Point (AP) coordinated transmission has not been sufficiently studied. The method for efficiently managing low-latency traffic signals in Multi-Access Point (AP) coordinated transmission has not been determined.
Innovation Solution
A communication apparatus and method are developed to improve communication efficiency by generating and transmitting low-latency traffic information on Multi-Access Point (AP) coordinated transmission; and a radio transmitter that transmits the generated low-latency traffic information. The apparatus includes a controller that generates low-latency traffic information on Multi-Access Point (AP) coordinated transmission; and a radio transmitter that transmits the generated low-latency traffic information. The apparatus includes a controller that determines control on a low-latency traffic signal; and a radio transmitter that transmits the signal including the generated low-latency traffic information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Multi-AP coordinated transmission is implemented, then communication efficiency is improved, but control method for low-latency traffic signal is not determined
Solution Approach 1:
The patent segments the control information into specific fields within the TWT element structure. The TWT element is divided into multiple sub-fields including TWT CTRL, TWT Type, TWT Wake Interval, TWT Service Period, and other parameters, allowing systematic organization of low-latency traffic control information in Multi-AP coordinated transmission
Solution Approach 2:
The patent uses bitmap fields (DL TID Bitmap, UL TID Bitmap) that can selectively indicate which traffic identifiers require coordinated transmission. This partial action approach allows the system to apply complex Multi-AP coordination only to specific low-latency traffic flows that need it, rather than all traffic, thereby improving communication efficiency for critical traffic while maintaining simpler operation for other traffic types
2Productivity
If low-latency traffic information is transmitted, then communication efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent makes the existing TWT element structure serve multiple functions by incorporating it to carry both regular TWT scheduling information and low-latency traffic control information for Multi-AP coordinated transmission. The same TWT element structure is used to indicate service period allocation, trigger frame transmission timing, and coordinated transmission parameters, thereby avoiding the need for separate dedicated signaling messages and reducing overall signaling overhead
Solution Approach 2:
The patent adds new dimensions to the existing TWT element structure by introducing bitmap fields (DL TID Bitmap, UL TID Bitmap) and control fields that encode multiple pieces of information in compact form. Instead of using separate messages for each control parameter, the invention packs multiple control indicators into bitmaps where each bit represents a specific TID's coordination status, efficiently transmitting low-latency traffic information with minimal overhead
Data Source
AI summary
A communication device comprising a control unit that generates low latency traffic information relating to multi-AP coordinated transmission and a wireless transmission unit that transmits the generated low latency traffic information.