Wireless Extension Link Recovery Without Anchor-Link Reversion
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in recovering lost wireless communication links, particularly extension links established via different frequency bands, often requiring communication over anchor links, which can incur delays and inefficiencies.
Innovation Solution
Implementing recovery mechanisms such as periodic beacon-based, distributed short beacon-based, STA-initiated fast, and monitored-link flexible procedures to recover extension links directly in the frequency band of the extension link without relying on anchor links, utilizing training sequences and proactive link recovery techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If link recovery is performed via anchor links in different frequency bands, then link recovery can be achieved, but recovery time increases and efficiency decreases
Solution Approach 1:
The patent extracts the link recovery process from the anchor link frequency band and performs it directly in the extension link frequency band. This separation allows the recovery procedure to occur independently on the extension link without requiring communication through the anchor link, thereby reducing recovery time while maintaining reliability
Solution Approach 2:
The patent introduces training sequences as intermediary signals that enable direct link recovery in the extension band. These training sequences serve as mediators that allow the transmitting and receiving devices to perform beamforming training and recover the extension link directly, eliminating the need to use anchor links as intermediaries for recovery
2Reliability
If link recovery is performed via anchor links, then recovery can be achieved, but communication efficiency decreases
Solution Approach 1:
The patent extracts the link recovery function from the anchor link communication path and implements it directly in the extension link frequency band. This allows the recovery process to occur independently without involving anchor link communication, thereby improving communication efficiency while maintaining the ability to recover lost links
Solution Approach 2:
The patent enables the extension link to perform self-recovery by implementing recovery procedures directly on the extension link using training sequences and beamforming training. The extension link serves itself for recovery purposes without requiring external assistance from anchor links, thereby improving overall communication efficiency
3Reliability
If periodic beacon-based recovery procedures are used, then link recovery can be achieved, but recovery speed is limited by beacon intervals
Solution Approach 1:
The patent implements dynamic link recovery mechanisms that can operate independently of periodic beacon intervals. The system can initiate recovery procedures immediately when link loss is detected, using training sequences and beamforming training directly in the extension band, thereby making recovery speed adaptable rather than constrained by fixed periodic intervals
Data Source
AI summary
This disclosure provides wireless communication methods, components, devices and systems for link recovery in wireless communication networks. Some aspects more specifically relate to the recovery of lost wireless communication links for which initial link establishment has been aided by communications over anchor links of different frequency bands than those of the lost wireless communication links. According to some aspects, a recovery mechanism can be implemented that enables involved devices to recover such “extension” links using communications over their associated frequency bands, without needing to revert to communication over their corresponding anchor links. In some examples, such a recovery mechanism can be implemented to enable recovery of a millimeter wave (mmWave) extension link of a non-standalone mmWave basic service set (BSS) without needing to revert to communication over a sub-7 GHz anchor link.