Link Mapping Negotiation for Multi-Link Devices
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Solution Overview
Problem
Current wireless communication systems, particularly in WLANs based on the IEEE 802.11 standard, face challenges in efficiently managing link mappings between access points and non-access point multi-link devices, leading to suboptimal traffic distribution and interference issues due to inflexible default mappings.
Innovation Solution
Implementing a mechanism for link mapping negotiation between AP MLDs and non-AP MLDs, where devices can dynamically adjust traffic identifier mappings across multiple links, allowing for more efficient traffic distribution and load balancing by requesting and accepting alternative mappings based on current load conditions and quality of service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If default link mapping is used, then device complexity is reduced, but traffic distribution efficiency deteriorates
Solution Approach 1:
The patent implements dynamic link mapping where the mapping between traffic identifiers and links is no longer fixed but can be negotiated and adjusted between AP MLD and non-AP MLD based on current network conditions. This allows the system to adapt traffic distribution to changing link qualities and loads, resolving the contradiction between simplicity and efficiency by making the mapping flexible rather than static.
Solution Approach 2:
The patent changes the parameter of link mapping from a fixed default configuration to a negotiable parameter that can be modified based on network conditions. By introducing link mapping negotiation, the system can optimize traffic distribution efficiency without permanently increasing device complexity, as the complexity is only present during the negotiation phase.
2Adaptability or versatility
If fixed default mapping is used, then system stability is improved, but adaptability to network conditions deteriorates
Solution Approach 1:
The patent introduces dynamic negotiation mechanisms that allow the link mapping to adapt to changing network conditions while maintaining stability through established protocols. The mapping can be updated when needed but follows structured negotiation procedures, balancing adaptability with stability.
Solution Approach 2:
The patent implements feedback mechanisms where link mapping decisions are based on network condition information exchanged between AP MLD and non-AP MLD. This feedback loop allows the system to adapt to changing conditions while maintaining stable operation through protocol-governed updates rather than arbitrary changes.
3Productivity
If dynamic link mapping negotiation is implemented, then traffic distribution is optimized, but device complexity increases
Solution Approach 1:
The patent segments the link mapping negotiation into distinct phases and messages (initial link mapping request, counter proposal, confirmation). This segmentation reduces the complexity burden on individual devices by breaking down the negotiation process into manageable steps rather than requiring all complexity to be handled simultaneously.
Solution Approach 2:
The patent uses standardized negotiation messages and protocols as intermediaries between AP MLD and non-AP MLD. These intermediary communication structures facilitate the complex negotiation process without requiring direct complex interactions between devices, thereby optimizing network performance while managing device complexity through protocol abstraction.
Data Source
AI summary
Methods, systems and apparatuses for negotiating mapping between traffic flows and different links by an access point (AP) multi-link device (MLD) and non-AP MLD are described. An AP MLD may transmit an initial request for a first limited mapping. A non-AP MLD may request to add at least one additional link for at least one traffic flow. The non-AP MLD and AP MLD may exchange various mapping negotiation messages.