UWB Narrowband Discovery Beacons for Low-Interference Device Coordination
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Solution Overview
Problem
Existing wireless communication technologies for immersive experiences in artificial reality systems, such as VR, AR, or MR, face challenges in coordinating multiple devices using the same wireless link technology, leading to interference and inefficiencies in data transmission.
Innovation Solution
Implementing ultra-wideband (UWB) devices that transition between narrowband channels to broadcast discovery beacons and manage service requests, establishing roles, and negotiating services to optimize communication and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Wi-Fi or Bluetooth wireless links are used for data transmission between devices, then communication coverage and data rate are improved, but interference between multiple devices using the same wireless link technology increases
Solution Approach 1:
The patent segments the wireless communication spectrum by introducing a second wireless link technology (UWB) that operates independently from traditional Wi-Fi/Bluetooth links. This creates separate communication channels where devices can discover and communicate with each other without interfering with devices using the original wireless link technology, thus resolving the interference problem while maintaining high data transmission rates through the narrowband channels.
Solution Approach 2:
The patent introduces an intermediary mechanism - a discovery beacon system using UWB technology - that mediates between devices using different wireless link technologies. This intermediary allows devices to establish connections and coordinate communications without direct interference, as the discovery and initial communication happen through the UWB link while data transmission can occur through the original Wi-Fi/Bluetooth links.
2Reliability
If detailed coordination between multiple devices using the same wireless link technology is implemented, then communication reliability is improved, but system complexity and coordination overhead increase
Solution Approach 1:
The patent extracts the discovery and initial coordination functions from the complex multi-device coordination problem by using a dedicated discovery beacon mechanism. Devices broadcast discovery beacons independently, and other devices can discover them without requiring complex coordination protocols. This separates the discovery phase from the data transmission phase, reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The patent implements preliminary action by having devices broadcast discovery beacons in advance before actual data transmission begins. This allows devices to discover available neighbors and establish communication parameters beforehand, simplifying the subsequent coordination process. The discovery phase prepares the system state so that actual data transmission requires minimal coordination overhead.
Data Source
AI summary
Systems, methods, and computer readable medium for performing narrowband device discovery include a first ultra-wideband (UWB) device that transitions from a first narrowband channel to a second narrowband channel of a plurality of defined narrowband channels, to broadcast a discovery beacon for receipt by one or more UWB devices. The first UWB device can receive, from a second UWB device, in the second narrowband channel, a request for at least one service to be performed between the first UWB device and the second UWB device. The first UWB device can send to the second UWB device in response to the request, a response frame.