WLAN Trigger Frame Scheduling for Low-Latency QoS
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Solution Overview
Problem
Existing wireless communication technologies face challenges in meeting quality-of-service requirements without requiring modifications to the IEEE 802.11 standard, which can be expensive and time-consuming.
Innovation Solution
Implementing techniques for low-latency communication by using trigger frames and feedback mechanisms that allow for resource allocation and link adaptation without modifying existing IEEE 802.11 standards, including the use of integrated circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-link transmission, higher modulation coding scheme, larger number of spatial streams, spatial reuse, or increased bandwidth are used to improve wireless communication performance, then quality of service requirements are met, but modifications to the IEEE 802.11 standard are required which are expensive and time-consuming
Solution Approach 1:
The system allows electronic devices to autonomously negotiate and configure trigger frame parameters, resource allocations, and communication schedules without requiring external standard modifications. The devices self-organize their communication patterns using existing IEEE 802.11 infrastructure, eliminating the need for expensive hardware updates while achieving improved QoS through intelligent resource management
Solution Approach 2:
The patent changes operational parameters such as trigger frame timing, resource unit allocations, and communication schedules dynamically negotiated between devices. By adjusting these software-controllable parameters rather than hardware specifications, the system achieves performance improvements without requiring standard modifications or new integrated circuits
2Loss of time
If trigger frames with requested resource allocation and suggested time intervals are implemented, then latency is reduced and communication performance is improved, but existing IEEE 802.11 infrastructure must be utilized without modifications
Solution Approach 1:
The system dynamically negotiates trigger frame parameters, resource allocations, and timing intervals between electronic devices based on real-time communication needs. This dynamic adaptation allows low-latency communication patterns to emerge from existing infrastructure without requiring predetermined configurations or hardware modifications
Solution Approach 2:
The patent implements feedback mechanisms where electronic devices exchange information about their communication requirements, resource needs, and timing preferences through trigger frames. This feedback loop enables the system to optimize latency performance by continuously adapting resource allocations and trigger timing based on actual communication conditions while using existing IEEE 802.11 infrastructure
Data Source
AI summary
An electronic device may receive a frame associated with a second electronic device. This frame may include a MAC header with information specifying a request for a trigger or a trigger frame, and the information may include a suggested time interval during which the trigger or the trigger frame is to be provided and a requested resource allocation. For example, the MAC header may include an A-control field, and the A-control field may include the information or may include multiple A-MPDUs and one or more of the A-MPDUs (such as a last A-MPDU or all of the A-MPDUs) may include the information. Moreover, the time interval may begin at a previous transmission associated with the second electronic device, and the requested resource allocation may include a capacity. In response to the request, the electronic device may provide the trigger or the trigger frame addressed to the second electronic device.