UWB-NB Channel Initialization for Faster IoT Device Discovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for an efficient method to provide ultra-wide band (UWB) and narrow band (NB) communication services for device discovery and connection setup in IoT environments, particularly for applications like smart homes and smart cities, where accurate ranging and secure communication are essential.
Innovation Solution
A method and device that utilize UWB and NB channels for message exchange, including broadcasting, receiving, and transmitting messages through initialization channels, utilizing a transceiver and controller to facilitate efficient connection setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB communication is used for device discovery and connection setup, then ranging accuracy and security are improved, but communication efficiency and connection setup speed deteriorate
Solution Approach 1:
The patent segments the connection setup process into two distinct phases: initial device discovery and connection setup using NB channels, and subsequent secure communication using UWB channels. This segmentation allows the system to use NB channels for initial handshake (improving speed) and reserve UWB channels for actual secure communication (maintaining accuracy and security), thus resolving the contradiction between ranging accuracy and connection setup speed.
2Reliability
If UWB channels are used for all communication including initialization, then security is improved, but energy consumption increases
Solution Approach 1:
The patent applies local quality by assigning different communication channels to different functional requirements: NB channels are used for initialization and device discovery where ultra-high security is not critical, while UWB channels are reserved for actual data communication where security is paramount. This localized allocation of security resources reduces overall energy consumption while maintaining security where needed.
3Reliability
If multiple channels are used for message exchange, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces a channel selection mechanism that acts as an intermediary, automatically determining which channel (NB or UWB) should be used for each communication phase based on predefined criteria. This intermediary layer simplifies the overall system architecture by providing clear channel assignment rules, reducing the complexity that would otherwise arise from managing multiple channels simultaneously.
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
The present disclosure provides a method for operating an ultra wide band (UWB) channel and a narrowband (NB) channel together. According to various embodiments of the disclosure, a method of a first UWB device may comprise the operations of: broadcasting, through an initialization channel, a first message (Adv Poll) that provides information used for the discovery of the first UWB device; receiving, through the initialization channel, from a second UWB device, a second message (Adv RESP) that responds to the first message (Adv Poll); and transmitting, through the initialization channel, to the second UWB device, a third message (Adv DEFERRED or Adv CONF) corresponding to the second message (Adv RESP). The initialization channel can include at least one from among NB channels.