Bluetooth Module Power Management via Network ID Comparison
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Solution Overview
Problem
Bluetooth-enabled mobile terminals experience high current consumption due to continuous attempts to connect to Bluetooth access points, even in areas where communication is not necessary, leading to unnecessary power dissipation.
Innovation Solution
The method involves storing System ID (SID) and Network ID (NID) during initial bonding with a Bluetooth access point and comparing them with current IDs to determine if a connection is necessary, transitioning the short-distance wireless communication module to a low-power or power-off mode if they differ, and reconnecting only when IDs match, thereby minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Bluetooth module continuously attempts to connect to Bluetooth access points, then connection reliability is improved, but current consumption increases
Solution Approach 1:
The mobile terminal stores SID and NID information during initial bonding with a Bluetooth access point before actually needing to connect. This preliminary storage of connection parameters allows the terminal to later quickly determine whether reconnection is necessary by comparing stored IDs with current network IDs, avoiding unnecessary connection attempts and reducing power consumption while maintaining reliable reconnection when needed.
2Adaptability or versatility
If the Bluetooth module remains active to maintain connection, then communication availability is improved, but power consumption increases
Solution Approach 1:
The Bluetooth module dynamically adjusts its operational state based on real-time comparison of network IDs. When the current network ID matches the stored bonded ID, the module activates to maintain communication. When they differ, the module transitions to low-power or power-off mode. This dynamic state adjustment ensures communication availability is maintained only when necessary, significantly reducing overall power consumption.
3Ease of operation
If the mobile terminal automatically connects to any Bluetooth access point, then ease of operation is improved, but unnecessary power dissipation occurs
Solution Approach 1:
The system implements feedback by continuously comparing current network SID and NID with the stored bonded SID and NID. Based on this feedback comparison, the system automatically determines whether to attempt connection or enter power-saving mode. This feedback mechanism maintains ease of automatic connection for legitimate reconnections while preventing unnecessary power dissipation in areas where the bonded access point is not available.
Data Source
AI summary
A method of connecting a mobile terminal and an AP. The mobile terminal has a short-distance wireless communication module and a mobile communication module, and the AP provides a wired/wireless communication interface. The SID and NID of a network with the AP are stored as SID_Bond and NID_Bond at an initial bonding with the AP. It is determined whether a channel established with the AP has been terminated. If the channel is terminated, the SID_Bond and NID_Bond are compared with an SID and NID for the present position. If they are different, the short-distance wireless communication module is transitioned to a low-power mode.