BSS Association via LL Capability Declaration for Latency Prioritization
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Solution Overview
Problem
Current wireless communication networks face challenges in managing low latency reliable services (LLRS) effectively, particularly in prioritizing LLRS traffic over non-LLRS traffic to meet stringent latency, reliability, and jitter requirements, especially in latency-sensitive applications like online gaming and real-time video streaming.
Innovation Solution
The proposed solution involves a communication method where non-access-point stations declare their low latency capabilities to join a basic service set (BSS) and apply specific low latency measures, such as passive or active LL measures, to reduce the use of the wireless medium for non-LLRS traffic, allowing the access-point to authorize or refuse association based on these capabilities, thereby prioritizing LLRS traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-AP stations transmit not-LL traffic using standard MAC protocols, then the wireless medium is utilized for general communication, but LLRS traffic experiences increased latency and reduced reliability due to medium contention
Solution Approach 1:
The patent implements preliminary action by requiring non-AP stations to declare their LL capability status before joining the BSS. The AP collects this information during the association phase and stores it in a data structure. This preliminary classification enables the AP to proactively manage medium access rights, preventing latency issues before they occur by ensuring that stations capable of applying LL measures are identified and authorized appropriately for LLRS traffic transmission.
2Adaptability or versatility
If the AP authorizes all stations to join the BSS without capability verification, then network accessibility is maximized, but QoS management for LLRS traffic becomes ineffective
Solution Approach 1:
The patent applies local quality by differentiating station treatment based on their LL capability status. The AP creates distinct categories: stations capable of applying LL measures and stations incapable of applying LL measures. This local differentiation enables targeted QoS management where the AP can selectively control medium access rights for LLRS traffic based on individual station capabilities, rather than applying uniform policies to all stations. The data structure stores per-station capability information enabling this granular quality management.
Solution Approach 2:
The patent implements preliminary action by requiring non-AP stations to declare their LL capability status before joining the BSS. The AP collects this information during the association phase and stores it in a data structure. This preliminary classification enables the AP to proactively manage medium access rights, preventing latency issues before they occur by ensuring that stations capable of applying LL measures are identified and authorized appropriately for LLRS traffic transmission.
3Reliability
If the AP implements strict LL capability requirements for BSS association, then LLRS traffic priority is ensured, but network versatility decreases as incapable stations are refused access
Solution Approach 1:
The patent applies dynamics by implementing flexible, context-dependent association policies. Rather than enforcing rigid LL capability requirements, the AP dynamically adjusts association acceptance based on the specific LL capability declaration and current network conditions. The data structure enables the AP to track which stations have declared LL capability and make real-time decisions about medium access authorization. This dynamic approach allows the network to adapt to varying traffic conditions and station capabilities, ensuring LLRS priority when needed while maintaining broad network accessibility.
Data Source
AI summary
A network adopts Low Latency Reliable Service measures to ensure LLRS traffic has priority over not-LLRS traffic. Active measures are applied by stations exchanging LLRS traffic in the network. Passive measures are applied by stations not participating in the LLRS traffic exchange, to reduce use of the medium for exchange of not-LLRS traffic. The LLRS traffic is thus prioritized. The AP declares the LLRS requirements for the non-AP stations to join the BSS, such as the LL measures. A non-AP station wishing to join the BSS declares its LL capabilities to implement LL measures, during an association procedure. The AP decides whether to authorize or refuse the association based on the declared capabilities, thereby building a BSS with non-AP stations that are capable of applying passive LL measures when LLRS traffic is to be exchanged between stations. Achievement of low latency, PDR and jitter requirements is consequently eased.