Virtual Broadcast Domain Overlay for Wireless Network Service Continuity
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Solution Overview
Problem
Conventional wireless local area networks face challenges in reliable broadcast of layer-2 and layer-3 traffic due to underlying layer-2 network connectivity issues, particularly when client devices roam across different layer-2 broadcast domains, requiring manual configuration and topology modifications to maintain uninterrupted network services.
Innovation Solution
The solution involves overlaying virtual broadcast domains on underlying physical networks, allowing network administrators to configure virtual broadcast groups based on common properties such as location, role, or service, enabling selective propagation of messages within these groups without burdening the underlying network topology, and allowing devices to discover resources within their designated virtual domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual configuration is used to maintain layer-2 broadcast domain membership for mobile devices, then network service continuity is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The system enables mobile devices to automatically maintain layer-2 broadcast domain membership through self-service mechanisms. Devices autonomously register their presence and receive appropriate virtual broadcast domain assignments without requiring manual configuration by network administrators, thereby maintaining service continuity while eliminating configuration complexity
Solution Approach 2:
The patent implements dynamic virtual broadcast domain assignments that automatically adapt to mobile device movements. As devices roam between access points and physical locations, the system dynamically reassigns them to appropriate virtual broadcast domains based on their current context, maintaining network service continuity without manual intervention
2Adaptability or versatility
If network topology modifications are implemented to support service discovery across physical boundaries, then service discovery capability is improved, but device complexity and adaptability worsen
Solution Approach 1:
The patent introduces a virtual dimension overlaying the physical network topology. Virtual broadcast domains create an additional logical layer that enables service discovery across physical boundaries without modifying the underlying physical network structure, thereby improving service discovery capability while avoiding physical topology complexity
Solution Approach 2:
The system employs virtual broadcast domains as intermediaries between devices in different physical locations. These virtual domains act as logical mediators that enable service discovery and communication without requiring direct physical connectivity or complex topology modifications, simplifying the network architecture while enhancing adaptability
3Reliability
If devices are forced to remain in the same layer-2 broadcast domain, then network service reliability is improved, but adaptability to dynamic network changes deteriorates
Solution Approach 1:
The patent segments the network into multiple virtual broadcast domains that are overlaid on the physical infrastructure. This segmentation allows devices to be logically grouped by service requirements rather than physical location, maintaining reliable communication within virtual domains while adapting to dynamic network changes through flexible reassignment
Solution Approach 2:
The system implements dynamic virtual broadcast domain assignments that automatically adapt to mobile device movements and network changes. Devices are continuously reassigned to appropriate virtual domains based on their current context, maintaining service reliability while providing adaptability to dynamic network conditions
Data Source
AI summary
Operations include determining that a subset of devices, from a plurality of devices, are executing a same application, located in a same geographical location, or correspond to a same user. Responsive to the determining operation, a group with the subset of devices is created and communication between the devices is supported.