Mesh Network Spatial Separation for Radio Isolation
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Solution Overview
Problem
In electronic devices with multiple radios, such as cellular and Wi-Fi, achieving sufficient isolation between radios operating on close frequencies is challenging, leading to trade-offs in size, throughput, and latency, often requiring time slicing or larger device designs to avoid signal corruption.
Innovation Solution
A wireless mesh network architecture that leverages spatial frequency separation between radios by using multiple mesh network devices to create alternate communication paths, allowing simultaneous operation of radios with frequencies within 100 MHz separation, thereby overcoming isolation limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radios operate simultaneously on close frequencies in a single device, then device functionality is improved, but signal isolation between radios deteriorates causing interference
Solution Approach 1:
The patent segments the communication function across multiple spatially separated mesh network devices rather than concentrating all radios in a single device. Each mesh node handles specific frequency bands, allowing simultaneous operation without interference while maintaining comprehensive device functionality.
Solution Approach 2:
The patent introduces spatial dimension as a new factor for frequency separation. Instead of relying solely on frequency distance, the system uses physical distance between mesh nodes to create isolation, enabling simultaneous operation of radios on close frequencies by routing them through different spatial locations.
2Object-affected harmful factors
If time slicing is used to avoid signal interference, then signal isolation is improved, but throughput and latency deteriorate
Solution Approach 1:
The patent segments the communication load across multiple mesh nodes rather than using time slicing at a single node. This allows simultaneous data transmission across different spatial locations, eliminating the throughput penalty associated with time-division multiplexing while maintaining signal isolation through spatial separation.
3Object-affected harmful factors
If physical separation distance between antennas is increased, then signal isolation is improved, but device size increases
Solution Approach 1:
The patent segments the radio functions across multiple distributed mesh nodes rather than requiring large physical separation within a single device. This allows adequate signal isolation through spatial distribution while keeping individual device dimensions compact, as each node contains only a subset of radios.
Solution Approach 2:
The patent resolves the size-isolation contradiction by utilizing three-dimensional spatial arrangement of mesh nodes. The system creates isolation not through increased distance within a single device, but through strategic positioning of multiple devices in 3D space, maintaining compact individual device sizes while achieving sufficient separation for signal isolation.
Data Source
AI summary
Network hardware devices organized in a wireless mesh network (WMN) in which one network hardware devices includes three radios, two of which operate with a frequency separation less than 100 MHz. A first network hardware device communicates with a second network hardware device when not serving data to a client device. When serving data to a client device, the first network hardware device communicates wireless wide area network (WWAN) data to a WWAN network through a third network hardware device in the WMN that has its own WWAN connection to create spatial separation for simultaneous communication.