Selective Peer Synchronization in Wi-Fi Networks
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Solution Overview
Problem
Current wireless communication systems, particularly Wi-Fi networks based on the IEEE 802.11 standard, face challenges in efficiently setting up and coordinating direct communication between wireless stations without an intermediate access point, leading to suboptimal operation in peer-to-peer communication scenarios.
Innovation Solution
The implementation of a peer-to-peer wireless communication protocol, such as Neighbor Awareness Networking (NAN), which enables wireless stations to initiate, schedule, and discover multicast groups, perform selective synchronization, and merge clusters based on common services supported, allowing for efficient direct communication and synchronization between neighboring stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If peer wireless stations communicate directly without an intermediate access point, then communication efficiency and setup speed are improved, but coordination complexity and synchronization difficulty increase
Solution Approach 1:
The patent introduces a NAN cluster structure where a NAN anchor master acts as an intermediary to coordinate timing and synchronization among peer wireless stations. This mediator enables efficient direct communication while managing the coordination complexity through centralized timing control, resolving the contradiction between communication efficiency and coordination complexity.
Solution Approach 2:
The patent implements dynamic cluster merging and splitting mechanisms that allow the network topology to adapt automatically. Clusters can merge when stations move between ranges, and split when necessary, enabling the system to dynamically adjust to changing conditions while maintaining synchronization, thus improving productivity without permanently increasing complexity.
2Adaptability or versatility
If multiple clusters are merged to improve service coverage, then service availability is improved, but synchronization stability and latency performance deteriorate
Solution Approach 1:
The patent applies local quality by allowing different NAN clusters to maintain independent timing and synchronization characteristics suited to their local conditions. Each cluster can operate with its own anchor master and timing reference, ensuring synchronization stability locally while providing service availability globally through selective merging based on common services.
Solution Approach 2:
The patent segments the wireless network into multiple independent NAN clusters that can operate autonomously. This segmentation allows service availability to be improved through cluster merging when needed, while maintaining synchronization stability within each segment. The segmentation principle enables the system to balance service coverage and synchronization reliability by keeping clusters small and manageable.
3Reliability
If selective synchronization based on common services is implemented, then service quality is improved, but setup time and processing overhead increase
Solution Approach 1:
The patent implements preliminary action by pre-establishing NAN clusters and their service capabilities before actual communication needs arise. Service information is advertised and cached in advance, allowing stations to quickly determine compatibility and merge clusters without extensive real-time negotiation, thus improving service quality while minimizing setup time.
Data Source
AI summary
In some embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to a mechanism for a device to perform selective synchronization (or cluster merging) with one or more neighboring peer devices.