Link Negotiation for Priority Traffic in MLD Systems
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Solution Overview
Problem
Current wireless communication systems, particularly those based on the IEEE 802.11 standard, face challenges in efficiently managing link mappings between access points (APs) and non-AP multi-link devices (MLDs) to optimize traffic flow and prioritize high-priority traffic.
Innovation Solution
The proposed solution involves a method for link mapping negotiation between AP MLDs and non-AP MLDs, where an initial traffic identifier (TID) to link (T2L) mapping is requested, and based on priority determination, the mapping can be adjusted to allocate more links for high-priority TIDs, enhancing flexibility and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a default TID to link mapping is used, then the system maintains simplicity and stability, but the ability to prioritize high-priority traffic is reduced
Solution Approach 1:
The patent implements dynamic link mapping negotiation where the TID to link mapping is not fixed but can be adjusted based on traffic priority requirements. The system transitions from a static default mapping to a dynamic mapping that adapts to changing traffic conditions, allowing high-priority TIDs to be allocated more links when needed while maintaining simplicity when prioritization is not required.
Solution Approach 2:
The patent changes the mapping parameter (number of links per TID) based on traffic priority. By introducing a priority indication mechanism and adjusting the link allocation parameter dynamically, the system can optimize traffic flow without fundamentally changing the overall mapping structure, thus balancing reliability improvement with complexity management.
2Productivity
If more links are allocated to high-priority TIDs, then network efficiency and load balancing improve, but the complexity of managing link mappings increases
Solution Approach 1:
The patent incorporates feedback mechanisms where the system monitors traffic characteristics and priority requirements, then adjusts link mappings accordingly. The priority indication from the transmitting device provides feedback that triggers mapping adjustments, and the receiving device's response confirms the new mapping, creating a closed-loop system that improves network efficiency while managing complexity through automated feedback-driven adjustments.
3Adaptability or versatility
If dynamic link mapping negotiation is implemented, then flexibility in traffic prioritization is improved, but the communication overhead between devices increases
Solution Approach 1:
The patent applies partial action by implementing dynamic link mapping negotiation only when traffic prioritization is required, rather than continuously. The system uses default mappings for ordinary traffic and activates negotiation mechanisms selectively based on priority indications, thus achieving adaptability for prioritized traffic while minimizing unnecessary communication overhead for standard traffic flows.
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 change to the first limited mapping. The non-AP MLD may register one or more high priority traffic flows and may change to a second mapping accommodating the high priority traffic flows on at least one additional link. The non-AP MLD and AP MLD may additionally exchange second and final mapping negotiation messages.