Communication Terminal Connection Request Timing via Advertising Packet Analysis
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Solution Overview
Problem
Communication terminals face delays in responding to users due to the timing mismatch between advertising packet switching periods of image processing apparatuses and retransmission intervals, leading to potential connection request retransmissions during non-acceptance periods, resulting in further delays.
Innovation Solution
A communication terminal that identifies the type of advertising packets received from an image processing apparatus using BLE and transmits connection requests only when the packet indicates acceptance, thereby avoiding retransmissions during non-acceptance periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication terminal transmits connection requests at fixed retransmission intervals, then the terminal can maintain regular communication attempts, but the connection requests may be transmitted during non-acceptance periods of the image processing apparatus, resulting in unnecessary delays
Solution Approach 1:
The patent applies dynamics by making the retransmission interval adaptive rather than fixed. The terminal dynamically adjusts the timing of connection request retransmissions based on the detected advertising packet types and their acceptance periods. This allows the system to optimize connection attempts in real-time, transmitting requests during acceptance periods and avoiding non-acceptance periods, thereby resolving the contradiction between reliable connection establishment and minimized response delay
Solution Approach 2:
The patent implements feedback by using the advertising packet information received from the image processing apparatus to control subsequent connection request timing. The terminal monitors the types of advertising packets and their transmission periods, then uses this feedback to synchronize connection requests with acceptance periods. This closed-loop approach ensures connection requests are sent at optimal times, improving both reliability and response time
2Adaptability or versatility
If the image processing apparatus periodically switches between multiple advertising packet types to support multiple terminals and applications, then the apparatus can provide versatile communication support, but the communication terminal experiences delays when connection requests coincide with non-acceptance periods
Solution Approach 1:
The patent applies preliminary action by having the communication terminal detect and analyze advertising packet types in advance before transmitting connection requests. The terminal monitors the periodic advertising packets, identifies acceptance periods, and prepares to transmit connection requests at the appropriate times. This advance preparation allows the terminal to align its connection attempts with the image processing apparatus's acceptance periods, reducing delays while maintaining support for multiple terminals and applications
Data Source
AI summary
The present invention provides a communication terminal that performs wireless communication with an image processing apparatus which broadcasts different types of advertising packets. The communication terminal receives the different types of advertising packets periodically broadcasted from the image processing apparatus; identifies a type of the advertising packet currently received from the image processing apparatus by analyzing a PDU (Protocol Data Unit) in the currently received advertising packet; and transmits a connection request to the image processing apparatus that has transmitted the currently received advertising packet, after the type of the currently received advertising packet is identified to be a specific type.