Parent Terminal Consolidates BLE Advertisements to Reduce Crosstalk
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Solution Overview
Problem
Bluetooth Low Energy (BLE) periodic advertising is prone to crosstalk interference, which can lead to reduced reception probability of advertisement packets, especially in environments with multiple terminals broadcasting on the primary channel.
Innovation Solution
A communication system that manages secondary channels for child terminals, allowing them to broadcast on different channels or timings, and uses a parent terminal to transmit advertisement packets on primary channels, reducing crosstalk and ensuring proper reception by scanner terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple terminals broadcast advertisement packets on the primary channel simultaneously, then the advertising coverage is improved, but crosstalk interference increases and reception probability decreases
Solution Approach 1:
The patent segments the advertising function by introducing a parent terminal that manages multiple child terminals. The parent terminal consolidates advertisement packets from multiple child terminals and broadcasts them through a single primary channel, while child terminals use secondary channels for their own advertisements. This segmentation eliminates crosstalk between multiple simultaneous transmissions while maintaining comprehensive advertising coverage.
Solution Approach 2:
The parent terminal acts as an intermediary between child terminals and scanner terminals. It receives advertisement data from multiple child terminals, packages them into unified advertisement packets, and broadcasts them on the primary channel. This intermediary role allows multiple terminals to advertise without direct interference, as the parent terminal mediates the transmission process and manages channel allocation.
2Object-affected harmful factors
If child terminals broadcast advertisement packets on secondary channels, then crosstalk on primary channel is reduced, but reception reliability may be compromised
Solution Approach 1:
The patent merges the advertising transmissions of multiple child terminals through the parent terminal. Instead of child terminals broadcasting independently on secondary channels (which would risk lost connections), the parent terminal combines their advertisement data into unified packets that include connection information. This merging ensures that scanner terminals can reliably receive consolidated advertisement data while child terminals maintain stable connections through the parent terminal's management.
3Reliability
If parent terminal manages and transmits advertisements for child terminals, then reception probability is improved, but communication complexity increases
Solution Approach 1:
The parent terminal performs multiple functions: it acts as a scanner terminal for receiving advertisements from child terminals, serves as an advertiser terminal for broadcasting consolidated packets on the primary channel, and functions as a manager for allocating secondary channels to child terminals. This multi-functionality consolidates complex communication management into a single device, improving reception probability while the standardized protocols keep the overall system complexity manageable.
Data Source
AI summary
A communication device, including:a communicator that communicates with a terminal that broadcasts an advertisement and broadcasts to a scanner terminal that receives data from the terminal; anda controller that controls the communicator to transmit, to the terminal, data that is included in an advertisement that is scheduled to be broadcast by the terminal and transmission information regarding the advertisement and cause the communicator to broadcast the transmission information that is intended to cause the scanner terminal to receive the advertisement that is broadcast by the terminal.