Bluetooth Mesh SAR Configuration Server Model#

SAR Segment Interval Step in milliseconds

SAR Unicast Retransmissions Count

SAR Unicast Retransmissions Without Progress Count

SAR Unicast Retransmissions Interval Step in milliseconds

SAR Unicast Retransmissions Interval Increment

SAR Multicast Retransmissions Count

SAR Multicast Retransmissions Interval in milliseconds

SAR Segment Interval Step

The Segment Interval Step controls the interval between transmissions of segments of a segmented message in milliseconds. The value is the range of 10ms to 160ms in 10ms steps, intermediate values are rounded down to the nearest multiple of 10. Default value is 20ms.

SAR Unicast Retransmissions Count

The SAR Unicast Retransmission Count controls the maximum number of transmissions of segments of segmented messages to a unicast destination. Valid range is 0 - 15, where 0 represents a single transmission. The default value is 7, resulting in 8 transmissions total.

SAR Unicast Retransmissions Without Progress Count

The SAR Unicase Retransmissions Without Progress Count controls the maximum number of retransmissions of segments of segmented messages to a unicast destination without progress (without marking newly marking any segments acknowledged). Valid range is 0 - 15, where 0 represents a single transmission. The default value is 2, resulting in 3 transmissions. The value of this state should be set to a value greater by two or more than the value of the SAR Acknowledgement Retransmissions Count on a peer node. This helps prevent the SAR transmitter from abandoning the SAR prematurely.

SAR Unicast Retransmissions Interval Step

The SAR Unicast Retransmissions Interval Step state controls the minimum interval between retransmissions of segments of a segmented message for a destination that is a unicast address in 25ms steps. Valid range is 25 - 400ms, intermediate values are rounded down to the nearest multiple of 25. Default value is 200ms.

SAR Unicast Retransmissions Interval Increment

The SAR Unicast Retransmissions Interval Increment state controls the incremental component of the interval between retransmissions of segments of a segmented message for a destination that is a unicast address in 25ms steps. Valid range is 25 - 400ms, intermediate values are rounded down to the nearest multiple of 25. Default value is 50ms.

SAR Multicast Retransmissions Count

The SAR Multicast Retransmissions Count state controls the maximum number of transmissions of segments of segmented messages to a group address or a virtual address. Valid range is 0 - 15, where 0 represents a single transmission. The default value is 1, resulting in 2 transmissions.

SAR Multicast Retransmissions Interval

The SAR Multicast Retransmissions Interval Step state controls the interval between retransmissions of segments of a segmented message for a destination that is a group address or a virtual address in 25ms steps. Valid range is 25-400ms, intermediate values are rounded down to the nearest multiple of 25. Default values is 100ms.

SAR Segments Threshold

The SAR Segments Threshold state represents the size of a segmented message in number of segments above which the Segment Acknowledgment messages are enabled. Valid range is 0 - 31, the default value is 3.

SAR Acknowledgment Delay Increment

The SAR Acknowledgment Delay Increment state control the interval between the reception of a new segment of a segmented message for a destination that is a unicast address and the transmission of the Segment Acknowledgment for that message. Valid range is 0 - 7, default is 2.

SAR Discard Timeout

The SAR Discard Timeout state controls the time that the lower transport layer waits after receiving unique segments of a segmented message before discarding that segmented message in 5s steps. Valid range is 5000 - 80000ms, intermediate values are rounded down to the nearest multiple of 5s. The default value is 10000ms.

SAR Receiver Segment Interval Step

The SAR Receiver Segment Interval Step state indicates the interval between received segments of a segmented message in milliseconds. This is used to control rate of transmission of Segment Acknowledgment messages. Valid range is 10 - 160, intermediate values are rounded down to the nearest multiple of 10. The default value is 20ms.

SAR Acknowledgment Retransmissions Count

The SAR Acknowledgment Retransmissions Count state controls the maximum number of retransmissions of Segment Acknowledgment messages sent by the lower transport layer. Valid range is 0 - 3. The default value is 2, representing 2 retransmissions or 3 in total.

SAR Segments Threshold

The SAR Segments Threshold state represents the size of a segmented message in number of segments above which the Segment Acknowledgment messages are enabled. Valid range is 0 - 31, the default value is 3.

SAR Acknowledgment Delay Increment

The SAR Acknowledgment Delay Increment state control the interval between the reception of a new segment of a segmented message for a destination that is a unicast address and the transmission of the Segment Acknowledgment for that message. Valid range is 0 - 7, default is 2.

SAR Discard Timeout

The SAR Discard Timeout state controls the time that the lower transport layer waits after receiving unique segments of a segmented message before discarding that segmented message in 5s steps. Valid range is 5000 - 80000ms, intermediate values are rounded down to the nearest multiple of 5s. The default value is 10000ms (10s).

SAR Receiver Segment Interval Step

The SAR Receiver Segment Interval Step state indicates the interval between received segments of a segmented message in milliseconds. This is used to control rate of transmission of Segment Acknowledgment messages. Valid range is 10 - 160, intermediate values are rounded down to the nearest multiple of 10. The default value is 20ms.

SAR Acknowledgment Retransmissions Count

The SAR Acknowledgment Retransmissions Count state controls the maximum number of retransmissions of Segment Acknowledgment messages sent by the lower transport layer. Valid range is 0 - 3. The default value is 2, representing 2 retransmissions or 3 in total.