Trigger Frame Uplink Resource Allocation Latency
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Solution Overview
Problem
Current wireless communication networks, particularly those adhering to IEEE 802.11 standards, face challenges in efficiently managing uplink multi-user transmissions and resource allocation, leading to suboptimal performance in terms of data transmission efficiency and latency.
Innovation Solution
The implementation of a mechanism that utilizes trigger frames to dynamically allocate uplink resources, allowing stations to transmit data based on allocated frequency and spatial resources, with the option to reuse resources for re-transmissions to enhance data reliability and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If trigger frames are used to dynamically allocate uplink resources, then resource utilization efficiency is improved, but system complexity increases
Solution Approach 1:
The patent modifies the trigger frame structure by adding a new information element that contains resource allocation parameters. This allows dynamic adjustment of uplink resource allocation without changing the fundamental trigger frame mechanism, thereby improving resource utilization while maintaining system compatibility and managing complexity through parameter-based configuration rather than structural overhauls.
2Reliability
If resources are allocated for re-transmissions, then data reliability is improved, but resource overhead increases
Solution Approach 1:
The patent pre-allocates resources for potential re-transmissions within the initial trigger frame by including resource allocation information for both initial and re-transmission opportunities. This preliminary action ensures that when re-transmissions are needed, resources are already reserved and ready, improving data reliability without requiring additional resource allocation signaling later, thus managing resource overhead efficiently.
3Loss of time
If dynamic resource allocation is implemented, then latency is reduced, but processing complexity increases
Solution Approach 1:
The patent implements dynamic resource allocation by making the resource allocation field in the trigger frame configurable and adaptable to current network conditions. This allows the system to optimize resource distribution in real-time, reducing latency for time-sensitive transmissions while managing processing complexity through structured dynamic adjustment rather than ad-hoc decision-making.
Data Source
AI summary
An access point (AP) transmits a trigger frame soliciting one or more trigger-based (TB) physical protocol data unit (PPDU) from a station (STA), the trigger frame comprising: a first indication associated with a first uplink resource allocation for the STA; a second indication associated with a second uplink resource for the STA; and a third indication indicating whether an aggregated acknowledgement mode is enabled. Based on the aggregated acknowledgement mode being enabled and on condition of receiving, from the STA, in response to the trigger frame, a first TB PPDU via the first uplink resource allocation and a second TB PPDU via the second uplink resource allocation, the AP transmits a BlockAck (BA) frame to the STA.