Communication Apparatus BLE Service Notification Wi-Fi Power Reduction
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Solution Overview
Problem
Communication apparatuses face high power consumption when providing Wi-Fi services due to the uncertainty of service usage requests, leading to continuous activation of Wi-Fi communication functions.
Innovation Solution
A communication apparatus that uses a low-power BLE communication unit to obtain service information from another device, allowing the Wi-Fi unit to remain inactive until the service is specifically required, thereby reducing power consumption by activating the Wi-Fi unit only when necessary for service execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Wi-Fi communication function is activated continuously to ensure service availability, then the service can be provided without interruption, but the power consumption increases significantly
Solution Approach 1:
The system performs preliminary service type notification using BLE communication before actual Wi-Fi service execution. This allows the Wi-Fi function to remain inactive until needed, while still preparing the service environment in advance through low-power BLE announcements of available services.
Solution Approach 2:
BLE communication acts as an intermediary between service availability notification and actual Wi-Fi service execution. The BLE unit transmits service type information and acts as a mediator that triggers Wi-Fi activation only when a matching service request is received, avoiding continuous Wi-Fi operation.
2Use of energy by moving object
If the Wi-Fi communication function is deactivated to reduce power consumption, then energy usage decreases, but the service cannot be provided when requested
Solution Approach 1:
The system dynamically switches between BLE and Wi-Fi communication modes based on service requirements. BLE is used for low-power service type notification, while Wi-Fi is activated dynamically only when a specific service match is found, creating a flexible hybrid communication system that adapts to actual service needs.
Solution Approach 2:
The system employs periodic service type notification through BLE communication at predetermined intervals, rather than continuous Wi-Fi operation. This periodic BLE announcement approach ensures service availability information is updated regularly while maintaining low power consumption between notification cycles.
3Use of energy by moving object
If BLE communication is used for service notification, then power consumption is reduced, but detailed service information cannot be obtained
Solution Approach 1:
The communication process is segmented into two distinct phases: first, BLE communication transmits service type information (coarse-grained notification), and second, Wi-Fi communication provides detailed service information (fine-grained data transfer). This segmentation allows each communication mode to operate at its optimal efficiency level for its specific function.
Solution Approach 2:
BLE communication performs preliminary service type notification before Wi-Fi activation. This preliminary action filters out non-matching service requests, ensuring that detailed Wi-Fi communication is only activated when necessary, thereby reducing overall information loss while maintaining energy efficiency.
Data Source
AI summary
A communication apparatus comprises a first obtaining unit configured to obtain from another communication apparatus information indicating a type of a service that can be executed by using a first communication unit, by using a second communication unit whose power consumption is less than the first communication unit; a second obtaining unit configured to, using the first communication unit, obtain from the another communication apparatus detail information necessary for performing a service indicated by the information obtained by the first obtaining unit; and a control unit configured to perform the service using the first communication unit based on the detail information obtained by the second obtaining unit.