Six Parameters Affecting BLE Power Consumption:

BLE devices, powered by button cells in specific applications, can operate for years or even longer. The reason lies in BLE's ultra-low power consumption, which is attributed to BLE's unique sleep mechanism. In simple terms, BLE activates the radio frequency for a certain period, transmits data quickly, and then shuts off the radio frequency to enter sleep mode. During the entire BLE operation, most of its radio frequency is off, resulting in extremely low energy consumption.

One, During the broadcast break

BLE devices send the same message on three channels during broadcasting. These messages are referred to as a broadcast event, and the time between two adjacent broadcast events is known as the broadcast gap. The broadcast gap determines the broadcasting frequency of the slave devices. Increasing the BLE broadcast gap reduces the number of broadcasts per unit time, thereby decreasing power consumption.

Two, bridging gaps

Upon establishing the connection between the BLE master device and slave device, the distance at which data communication ceases becomes the connection gap. The connection gap refers to the interaction frequency between the master and slave devices, akin to a broadcast gap. Similarly, increasing the connection gap between the master and slave devices can effectively reduce power consumption.

III. Equipment Delay

The device latency refers to the number of BLE connections a device can be in sleep mode before the connection is terminated. When the device latency is enabled, the device spends more time in sleep mode, allowing for reduced power consumption.

Four: Connection Timeout

Link Timeout, also known as Monitoring Timeout, refers to the link monitoring timeout time of the LE link, which must be a multiple of 10ms.

Section V: Scanning Window

Scanning parameters are unique to Bluetooth host devices. Each time a scan is performed, the device flips open the receiver to listen for broadcast devices, which is known as a scanning event. There are two scanning parameters: the scan window and the scan distance. The scan window refers to the duration of time for a single scan, or the scanning duration. The shorter the scanning duration, the less energy is consumed, resulting in greater energy efficiency and a longer lifespan.

Six: Scan Gap

The scan gap refers to the distance between the start times of two consecutive scan windows, which can also be understood as the scan frequency. Similarly, the lower the scan frequency, the less energy is consumed.