Multi-Link Device Relay Bridging Across WLANs and Weak Zones
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Solution Overview
Problem
Existing wireless networks lack a relay mode for maintaining the utility of Multi-Link Devices (MLDs) when one or both entities are Access Points (APs) on the same or different Wireless Local Area Networks (WLANs or Virtual Local Area Networks (VLANs), leading to unreliable connections in weak or dead zones.
Innovation Solution
Provisioning a Virtual Media Access Control (vMAC) address and configuring a bridging function for Multi-Link Device (MLD) relays between Transmitter STA (tSTA) and Destination STA (dSTA) using a Relay STA (rSTA) to extend coverage and improve connectivity, enabling simultaneous data transmission and reception across multiple links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless networks use traditional single-link AP connections, then device complexity is low, but reliability deteriorates in weak or dead zones
Solution Approach 1:
The patent segments the wireless communication path into multiple independent links (first link between tSTA and rSTA, second link between rSTA and dSTA). By dividing the single communication path into multiple segments, the system achieves better reliability through link aggregation and redundancy, allowing data to be transmitted through alternative paths if one link fails.
Solution Approach 2:
The patent introduces a relay station (rSTA) as an intermediary device between the transmitter (tSTA) and destination (dSTA). This intermediary extends coverage to weak or dead zones by receiving signals from tSTA and retransmitting them to dSTA, improving connection reliability in areas where direct communication would fail.
2Productivity
If Multi-Link Device (MLD) relay mode is implemented, then throughput is enhanced and latency reduced, but device complexity increases due to bridging configuration
Solution Approach 1:
The patent implements MLD capability where stations can operate across multiple links simultaneously, performing both client and relay functions. The bridging configuration enables the rSTA to handle multiple link types and communication modes universally, allowing it to function as both an endpoint and a relay node, thereby enhancing throughput through parallel data transmission paths.
Solution Approach 2:
The patent transitions from single-link communication to multi-dimensional link aggregation by establishing parallel communication paths (first link and second link). This dimensional expansion allows data to flow through multiple simultaneous channels, increasing throughput and reducing latency through concurrent transmission.
3Adaptability or versatility
If APs on different WLANs or VLANs need to communicate, then network versatility is improved, but reliability deteriorates without proper relay support
Solution Approach 1:
The patent uses the relay station (rSTA) as an intermediary that bridges different WLANs or VLANs. The rSTA receives frames from tSTA on one network and forwards them to dSTA on another network, enabling cross-network communication while maintaining connection stability through standardized relay operations.
Solution Approach 2:
The patent provisions a virtual MAC (vMAC) address for the MLD relay between tSTA and dSTA. This virtual address copying mechanism allows the relay to present a consistent network identity across different WLANs or VLANs, enabling seamless communication while maintaining reliability through standardized addressing.
Data Source
AI summary
Multi-Link Device (MLD) based relay support may be provided. Support a MLD relay can include provisioning a Virtual Media Access Control (vMAC) address for the MLD relay between a Transmitter STA (tSTA) and a Destination STA (dSTA). The MLD relay is configured, comprising determining a bridging configuration between a first link with the tSTA and a second link with the dSTA. A transmission from the tSTA is received via the first link, and the transmission is relayed to the dSTA via the second link.