Roaming Data Restriction via Metadata Context Transfer
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Solution Overview
Problem
Existing technologies face challenges in efficiently transitioning data context between Access Point Multi-Link Devices (AP MLDs) during roaming, particularly in reducing transition delay and maintaining data integrity.
Innovation Solution
A roaming data restriction system that breaks the transition into two phases: Phase 1 involves transferring metadata context to establish a boundary of operation for both AP MLDs, and Phase 2 allows non-AP MLDs to retrieve data from both AP MLDs under the defined boundary, enabling independent operation without parameter sync.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If actual data is transferred between AP MLDs during roaming, then data context continuity is maintained, but transition delay increases and network bandwidth is consumed
Solution Approach 1:
The patent segments the data transfer process into two distinct phases: Phase 1 transfers only metadata context (control information, security parameters, QoS settings) to establish operational boundaries, while Phase 2 handles actual data retrieval. This segmentation allows critical context information to be transferred quickly without moving large volumes of data, thereby reducing transition delay while maintaining data context continuity.
Solution Approach 2:
The patent performs preliminary transfer of metadata context in Phase 1 before actual data transfer occurs in Phase 2. By pre-establishing the operational boundaries, security contexts, and data retrieval parameters in advance, the system prepares the target AP MLD to immediately begin data retrieval without waiting for complete data transfer, thus reducing overall transition delay.
2Reliability
If actual data is transferred between AP MLDs during roaming, then data context continuity is maintained, but network bandwidth is consumed
Solution Approach 1:
The patent extracts and transfers only the essential metadata context (control information, security parameters, QoS settings) from the complete data set during Phase 1. By separating metadata from actual data, the system transfers only the minimum necessary information to maintain data context continuity, avoiding the bandwidth consumption that would result from transferring entire data sets.
Solution Approach 2:
The patent divides the data transfer process into metadata transfer (Phase 1) and actual data retrieval (Phase 2), allowing the metadata to be transferred efficiently over the network while the actual data remains localized or is retrieved on-demand, thereby reducing overall network bandwidth consumption.
3Ease of operation
If non-AP MLDs communicate with both current and target AP MLDs during transition, then transition smoothness is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic communication management where the non-AP MLD temporarily maintains communication with both current and target AP MLDs during the transition period. This dynamic approach allows the device to smoothly switch between access points by keeping both connections active during Phase 1 and Phase 2, ensuring no interruption in service while the target AP MLD retrieves data from the current AP MLD.
Data Source
AI summary
This disclosure outlines systems, methods, and devices for roaming data restriction. A device receives a transition request frame from a non-access point multi-link device (non-AP MLD), detailing capabilities and operational parameters for establishing links as a target access point multi-link device (target AP MLD). It then sends a transition response frame to the non-AP MLD, including metadata for context transfer, such as authentication parameters, replay counters, reordering buffer states, and transmission sequence numbers. During the transition, the device communicates with the non-AP MLD as the target AP MLD, receiving forwarded data context from a current access point multi-link device (current AP MLD). It manages data transfer operations by forwarding uplink data from the current AP MLD to the non-AP MLD and transmitting downlink data directly to the non-AP MLD.