Access Point Trigger Framing for Emergency Data Pre-Emption
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Solution Overview
Problem
Existing radio communication systems, such as IEEE 802.11be (EHT), lack a sufficient control method for overriding and transmitting emergency data during ongoing signal transmission by another terminal, leading to increased delays.
Innovation Solution
A control method and system for generating and transmitting control information to allow pre-emption transmission, where emergency data is sent by overriding an existing signal transmission, using a Trigger frame to allocate resources for pre-emption, including specific fields in the User Info field to indicate pre-emption resources and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal transmits a signal occupying radio resources, then resource utilization is improved, but emergency data transmission is delayed
Solution Approach 1:
The access point generates control information in advance that reserves specific radio resources for potential emergency data transmission. This preliminary allocation allows emergency data to be transmitted immediately when needed, without waiting for resource availability, thus resolving the contradiction between maintaining resource utilization and enabling fast emergency transmission.
Solution Approach 2:
The patent allocates specific portions of radio resources with different characteristics - some resources are designated for normal data transmission while others are reserved for emergency pre-emption transmission. This local differentiation allows the system to maintain high resource utilization for normal traffic while ensuring dedicated resources are available for emergency data, eliminating the delay contradiction.
2Speed
If control information is generated for pre-emption transmission, then emergency data transmission speed is improved, but system complexity increases
Solution Approach 1:
The control information is segmented into specific fields within the Trigger frame structure, with dedicated bits for indicating pre-emption resource allocation. This segmentation organizes the complex control information into manageable, standardized components, reducing the complexity burden while maintaining the ability to enable fast emergency transmission when needed.
Solution Approach 2:
The Trigger frame structure is designed to serve multiple functions - it controls normal uplink transmission and also enables emergency pre-emption transmission through specific field configurations. This multi-functionality allows the same control mechanism to handle both regular and emergency scenarios, reducing overall system complexity while maintaining high emergency transmission speed.
3Productivity
If radio resources are allocated for pre-emption transmission, then transmission efficiency is improved, but resource collision increases
Solution Approach 1:
The access point acts as an intermediary that centrally manages and coordinates pre-emption resource allocation. By controlling which terminals can use pre-emption resources and under what conditions, the access point mediates between multiple terminals' emergency transmission needs, preventing resource collisions while maintaining high transmission efficiency for legitimate emergency data.
Solution Approach 2:
The system implements feedback mechanisms where terminals report their emergency data status and resource usage to the access point. This feedback allows the access point to dynamically adjust pre-emption resource allocation, ensuring that resources are granted only when actually needed and coordinating allocations to prevent collisions between multiple terminals attempting pre-emption transmission simultaneously.
Data Source
AI summary
This access point is provided with: a control circuit that generates control information pertaining to a resource used for transmission of a second signal which is generated during transmission of a first signal; and a transmission circuit that transmits the control information.