How BLE central determine the connection interval

Electrical Engineering Asked on January 2, 2022

After connection established between central and peripheral, they start communicate at specified intervals called connection interval. As far as i know, the interval determined by central not peripheral. But the interval specified with 2 parameters min. and max. values that are controllable between 7.5ms and 4s. If 7.5ms min. and 4s max. interval are set, how central specify the exact connection interval? 7.5ms or 4s or between min. and max. ? Secondly, is this parameter constant throughout the communication?

One Answer

Connection interval Min/Max is to be seen as a recommandation from slave. It may or may not function correctly outside its range. Depending on profiles the Peripheral implements, timing requirements may change greatly. Choice has been left on the Central side as it allows one central to schedule multiple connections to multiple Peripherals in a useful manner.

For a complete walkthrough of timings in LE connections, refer to chapter 3.C.9.3.11 and following of Core specification.

Connection interval is enforced by master from its own needs. It is fixed arbitrarily on connection indication (6.B. It may then be changed through Connection Update procedure (6.B.5.1.1). Slave may ask master to change connection parameters dynamically through Connection parameters request (6.B.

Answered by Nipo on January 2, 2022

Add your own answers!

Related Questions

LiPo LED/Fiber job not working correctly after plugged in

1  Asked on November 19, 2021 by bigdamnheroine


High Vce(sat) of 2SD1048

2  Asked on November 19, 2021 by justynnuff


Flyback Diode for 24V DC Solenoid

2  Asked on November 17, 2021 by robert-m


Qi Charging transmitter types

1  Asked on November 17, 2021 by mgwalker95


High Voltage Safety Questions

1  Asked on November 17, 2021 by rohde


sConfig.SamplingTime = ADC_SAMPLETIME_28CYCLES_5;

1  Asked on November 16, 2021 by ananthakrishnan


Ask a Question

Get help from others!

© 2023 All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP