1 Reply Latest reply on Jul 26, 2016 9:06 AM by Madhu Lakshmipathy

    Fast Advertising Interval Vs Slow Advertising Interval

    spetcavich_1587511

      What's the friggin difference? Fast advertising seems to contain the set that is slow advertising why bother making a distinction if its only just a subset of fast advertising? 

         

       

         

      Fast advertising interval – This advertisement interval results in faster LE Connection. The BLE Component uses this interval value when the connection time is between the specified minimum and maximum values of the interval.

         

      □ Minimum: The minimum interval for advertising the data and establishing the LE Connection. The parameter is configured to increment in multiples of 0.625 ms. Valid range is from 20 ms to 10240 ms.

         

      □ Maximum: The maximum interval for advertising the data and establishing the LE Connection. The parameter is configured to increment in multiples of 0.625 ms. Valid range is from 20 ms to 10240 ms.

         

      □ Timeout: The timeout value of advertising with fast advertising interval parameters.

         

       Slow advertising interval – Defines the advertising interval for slow advertising. This is an optional parameter which, if enabled, allows to implement advertising with a lower duty cycle to save battery life. The Slow advertising interval parameters are applied to the device after the internal fast advertising interval timeout occurs.. The minimum and maximum values defined using this parameter allow the BLE Stack to expect the advertising to happen within these intervals.

         

      □ Minimum: The minimum interval for advertising the data and establishing the LE Connection. The parameter is configured to increment in multiples of 0.625 ms. Valid range is from 1000 ms to 10240 ms.

         

      □ Maximum: The maximum interval for advertising the data and establishing the LE Connection. The parameter is configured to increment in multiples of 0.625 ms. Valid range is from 1000 ms to 10240 ms.

         

      □ Timeout: The timeout value of advertising with slow advertising interval parameters.

        • 1. Re: Fast Advertising Interval Vs Slow Advertising Interval
          Madhu Lakshmipathy

          Hi,

             

          When you start fast advertising and once it has timed out, the slow advertisement will automatically start. Basically we do fast advertisement initially for enabling faster connection. If the peer device doesn't connect anyway, it will still advertise but this time it will try to conserve power. Though Fast advertisement allows the intervals as slow advertisement, it is recommended to use it this way: Fast advertisement has small intervals and Slow advertisement has large intervals.

             

          Regards,

             

          - Madhu Sudhan