WLAN Dedicated Channel Allocation for Low-Latency Traffic
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Solution Overview
Problem
In wireless local area networks (WLANs), the wireless medium becomes unavailable for certain types of traffic, such as low latency traffic, leading to a need for improved availability of the wireless medium.
Innovation Solution
Implementing a dedicated channel that carries information indicating various operation types, including low latency traffic indications, to manage and prioritize such traffic effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless medium is used for general traffic transmission, then the available bandwidth is充分利用, but low latency traffic cannot meet delay and jitter requirements
Solution Approach 1:
The wireless medium is segmented into a shared channel for general traffic and a dedicated channel for low latency traffic. The dedicated channel is a specific portion of the spectrum or time resource reserved exclusively for low latency traffic, separating it from the shared medium to ensure predictable delivery without being blocked by other traffic types.
Solution Approach 2:
A dedicated channel acts as an intermediary pathway specifically for low latency traffic. This dedicated pathway mediates between the traffic source and destination, ensuring that critical traffic receives guaranteed bandwidth and meets timing requirements without competing with other traffic in the shared medium.
2Reliability
If a dedicated channel is allocated for low latency traffic, then low latency traffic delivery is improved, but the wireless medium availability for other traffic decreases
Solution Approach 1:
Different portions of the wireless medium are assigned different qualities/functions. The dedicated channel has the quality of guaranteed, predictable access for low latency traffic, while the shared channel maintains high overall utilization for general traffic. This local differentiation allows each channel type to optimize for its specific purpose.
Solution Approach 2:
The system changes the allocation parameter of the wireless medium by reserving a specific portion (dedicated channel) with guaranteed access characteristics for low latency traffic, while the remaining portion (shared channel) operates with dynamic access for general traffic. This parameter change creates a hybrid architecture that balances reliability and productivity.
3Adaptability or versatility
If control and management signaling uses the shared wireless medium, then signaling flexibility is maintained, but the medium becomes unavailable for low latency traffic
Solution Approach 1:
The wireless medium is segmented such that control and management signaling remains on the shared channel while low latency traffic uses the dedicated channel. This segmentation allows control signaling to maintain flexibility by accessing the shared medium dynamically, while low latency traffic is protected from being blocked by signaling overhead.
Data Source
AI summary
Methods and apparatuses are disclosed for stations (STAs) in a Wireless Local Area Network (WLAN) to use a dedicated channel for various operations, including operations related to, for example, low latency traffic, wakeup radio (WUR), channel switching, power mode, and coexistence interference. The STA uses the dedicated channel in accordance with a configuration of the dedicated channel determined, for example, by receiving configuration information in a beacon frame from an access point (AP). The dedicated channel may include one or more resource units (RUs) and be included in physical protocol data units (PPDUs) received and/or transmitted by the STA. An STA may include an AP. Multiple embodiments of methods and apparatuses are disclosed.