UWB Device Discovery via Narrowband Segmentation
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Solution Overview
Problem
Existing ultra-wideband (UWB) communication systems face challenges in collision avoidance and efficient use of UWB devices, particularly in performing advertising, device discovery, and connection setup efficiently.
Innovation Solution
The method involves using narrowband (NB) channels for advertising, device discovery, and connection setup, with specific configurations such as dividing NB channels into mirroring and discovery channels, and operating these channels independently of UWB channels to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If UWB channels are used for advertising, device discovery, and connection setup, then device discovery capability is improved, but channel collision and interference increase
Solution Approach 1:
The patent segments the communication channels by introducing separate NB discovery channels that are independent from UWB channels. This allows device discovery to occur on NB channels while UWB channels remain dedicated to ultra-wideband communication, thereby preventing channel collisions and interference between different communication functions.
2Reliability
If additional out-of-band communication modules are added for device discovery, then device discovery reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes NB channels multi-functional by using them for both advertising and device discovery purposes. This eliminates the need for separate out-of-band communication modules, as the NB channels can handle multiple communication functions that would otherwise require additional hardware, thereby reducing device complexity while maintaining reliability.
3Reliability
If NB channels are used for advertising and device discovery, then channel collision is reduced, but channel allocation complexity increases
Solution Approach 1:
The patent segments channel allocation by designating specific NB channels as discovery channels that are not associated with UWB channels. This clear separation simplifies the allocation logic compared to sharing channels, as each channel type has a dedicated purpose, reducing the complexity of channel management while effectively preventing collisions.
4Productivity
If UWB and NB channels are coupled, then communication efficiency is improved, but collision probability increases
Solution Approach 1:
The patent segments the channel association by creating a clear distinction between UWB channels and NB discovery channels. The NB discovery channels are explicitly defined as not being associated with any UWB channel, which prevents the channel coupling that would lead to collisions, while maintaining communication efficiency through dedicated channel usage for each function.
Data Source
AI summary
Methods and devices are provided for ultra-wideband (UWB) communication. A method includes transmitting, by a first UWB device, an advertisement message through a narrowband (NB) channel, receiving, by the first UWB device, a first message for connection setup through the NB channel, from a second UWB device, and transmitting, by the first UWB device, a second message responding to the first message through the NB channel, to the second UWB device, wherein the second message includes information indicating that scanning the NB channel is required, and wherein the UWB channel is one of a plurality of candidate UWB channels for the UWB communication.