AP TXOP Time-Sharing for Lower-Latency Multi-STA Communication
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Solution Overview
Problem
Existing wireless communication technologies do not effectively support the sharing of a Transmission Opportunity (TXOP) among multiple stations (STAs) in a time division manner, limiting efficient resource allocation and increasing communication delay.
Innovation Solution
An Access Point (AP) shares part or all of the acquired TXOP in a time division manner to multiple non-AP STAs, allowing them to transmit non-Trigger Based Physical Layer Protocol Data Units (non-TB PPDUs) simultaneously or to other STAs, using a Multiple Users Request-To-Transmit Transmission Opportunity Sharing Trigger Frame (MU-RTS TXS TF) to allocate time and frequency resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an AP acquires a TXOP and does not share it with other STAs, then the AP has exclusive control over the transmission resources, but the communication delay of other STAs increases and resource utilization efficiency decreases
Solution Approach 1:
The patent segments the TXOP time domain resources into multiple sub-intervals and allocates them to different STAs. The AP divides the acquired TXOP into multiple time slots, allowing multiple STAs to transmit non-TB PPDUs in different time intervals, thereby enabling shared access to the transmission opportunity and reducing communication delay for all STAs involved
Solution Approach 2:
The patent implements dynamic TXOP sharing where the AP can flexibly allocate time domain resources to different STAs based on their transmission needs. The AP receives transmission requests from multiple STAs and dynamically adjusts the time slot allocation, allowing the resource distribution to adapt to changing traffic conditions and minimize overall communication delay
2Loss of time
If an AP shares TXOP with multiple STAs in a time division manner, then communication delay of STAs is reduced, but the system complexity and resource allocation overhead increase
Solution Approach 1:
The patent employs feedback mechanisms where STAs transmit transmission requests to the AP, and the AP responds with TXS Trigger frames containing time domain resource allocation information. This feedback loop allows the AP to coordinate resource sharing efficiently, managing the complexity through structured communication protocols while enabling multiple STAs to access the medium with reduced delay
Solution Approach 2:
The patent enables STAs to autonomously determine their transmission timing based on the received TXS Trigger frames. Once the AP allocates time slots and provides the allocation information, each STA independently schedules its non-TB PPDU transmissions according to the specified time domain resources, reducing the need for continuous centralized control and simplifying the overall system management
Data Source
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AI summary
Embodiments of the present disclosure provide a wireless communication method, a station device, an access point (AP) device. The embodiments of the present disclosure provide a solution of reusing the remaining time domain resources after non-AP STAs early end using time domain resources shared by an AP, so that the utilization rate of resources can be improved, and the communication delay of delay-sensitive non-AP STAs can be further reduced by allocating the remaining time domain resources to the delay-sensitive non-AP STAs. The wireless communication method comprise: an AP transmits first information, the first information being used for sharing some or all of the time domain resources of a TXOP obtained by the AP to multiple STAs, wherein the first information is used for indicating at least one of: address information of the multiple STAs, time duration information of time domain resources corresponding to the multiple STAs, start time domain positions of the time domain resources respectively corresponding to the multiple STAs, and the time domain resources respectively corresponding to the multiple STAs.