WUR Beacon Frame Padding for Consistent Channel Access
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Solution Overview
Problem
In wireless communications, the efficient transmission of wake-up receiver (WUR) frequency division multiple access (FDMA) frames across different 20 MHz channels faces challenges due to varying data rates and frame durations, leading to issues with legacy signal length indication and consistent beacon transmission, which can result in third-party interference and inconsistent channel access.
Innovation Solution
The WUR FDMA transmission system sets a uniform legacy signal indication length across all frequencies, uses padding to align frame durations, and allows STAs to indicate transition delays and channel availability, enabling the AP to schedule transmissions effectively and prevent third-party interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If WUR frames are transmitted at different data rates across different 20 MHz channels, then transmission flexibility and adaptability are improved, but frame duration varies causing inconsistency in legacy signal length indication and channel access
Solution Approach 1:
The patent applies preliminary action by setting a predetermined uniform legacy signal length indication across all 20 MHz channels before transmission begins. This pre-established uniform length ensures that all stations can consistently determine channel access timing and duration without being affected by variations in actual frame data rates or durations on different channels, thus resolving the contradiction between transmission flexibility and frame duration consistency.
2Stability of the object's composition
If padding is added to align frame durations across channels, then channel access consistency is improved, but transmission overhead increases
Solution Approach 1:
The patent uses copying by replicating the uniform legacy signal length indication across all channels. Instead of adding padding to individual frames to match varying durations, the system copies the same legacy signal parameters and length indications to all 20 MHz channels, allowing stations to consistently interpret channel access timing without requiring additional padding overhead on each channel.
3Reliability
If third-party interference is prevented through coordinated channel access, then transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies universality by creating a universal legacy signal length indication that serves all channels simultaneously. This universal approach allows all stations (including third parties) to interpret channel access parameters consistently across different 20 MHz channels, preventing interference without requiring complex channel-specific coordination protocols. The same legacy signal structure and length indications universally apply to all channels, simplifying the system while maintaining reliability.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to wake up receiver (WUR) frequency division multiple access (FDMA) transmission. A device may cause to send a wake up receiver (WUR) beacon frame on a WUR beacon operating channel to one or more station devices. The device may determine a first wake-up frame to be sent on a first WUR operating channel, wherein the first WUR operating channel is associated with one or more frequency division multiple access (FDMA) channels used for transmitting one or more wake-up frames to the one or more station devices. The device may determine to apply padding to the first wake-up frame based on a field included in a header of the first wake-up frame. The device may cause to send the first wake-up frame to a first station device of the one or more station devices.