Bluetooth Advertising Packet Timing for Power and Activation Control
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Solution Overview
Problem
Existing short-range wireless communication systems, such as Bluetooth, consume power even in sleep mode and can activate unintentionally, leading to wasteful power consumption and unintended device activation.
Innovation Solution
Implementing a notification system with different advertising packets for short-range wireless communication, where a first notification allows immediate connection and a second notification restricts connection processing to a specific timing, preventing unnecessary activation and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Bluetooth communication is performed while the digital camera is in the sleep state, then the user can remotely operate the digital camera at arbitrary timing, but power is always consumed in the sleep state
Solution Approach 1:
The patent applies dynamics by making the advertising packet transmission interval adjustable based on the sleep mode. The communication apparatus dynamically changes its transmission behavior: in the first sleep mode, advertising packets are transmitted at regular intervals to enable remote operation, while in the second sleep mode, transmission is suppressed to reduce power consumption. This dynamic adaptation resolves the contradiction between maintaining remote operation capability and reducing power consumption.
2Speed
If connection is established automatically in accordance with a response to an advertising packet, then connection can be quickly re-established, but the apparatus is activated at a timing unintended by the user
Solution Approach 1:
The patent applies local quality by differentiating the function of advertising packets based on the sleep mode. In the first sleep mode, advertising packets have the quality of enabling automatic connection for quick re-establishment. In the second sleep mode, advertising packets have the quality of not triggering connection, thus preventing unintended activation. This localized functional differentiation resolves the contradiction between connection speed and activation timing reliability.
3Use of energy by moving object
If advertising packet transmission interval is controlled to reduce power consumption, then power consumption is reduced, but connection establishment may be delayed or fail
Solution Approach 1:
The patent uses dynamics to adjust the advertising packet transmission interval according to the sleep mode. In the first sleep mode, transmissions occur at regular intervals to ensure timely connection establishment. In the second sleep mode, transmissions are suppressed to minimize power consumption, accepting that connection establishment will occur only when the apparatus wakes up. This dynamic adjustment balances power consumption against connection establishment time based on operational requirements.
Data Source
AI summary
In a communication system comprising a first communication apparatus and a second communication apparatus, the first communication apparatus transmits a first notification for connection processing in short-range wireless communication during an operation in a first power mode, and transmits a second notification, different from the first notification, for the connection processing in the short-range wireless communication during an operation in a second power mode in which power is saved more than in the first power mode. The second communication apparatus starts, if the first notification is received, the connection processing at an arbitrary timing, and starts, if the second notification is received, the connection processing at a timing restricted as compared to the case in which the first notification is received.