5.1.2 Beacon Request and Scan Duration

This section describes the power profile of the SAM R30 Mi-Wi sleeping end device during transmission of beacon request, and also captures the duration in which the device stays in scanning state for receiving beacon responses. The following figure illustrates the complete profile.
Figure 5-3. SAM R30 XPro
Figure 5-4. SAM R30 Module XPro
Table 5-2. Parameters
Parameters SAM R30 XPro SAM R30 Module XPro
Total duration (ms) 24800 24800
Average current (mA) 10.71 11.32
Peak current (mA) 28.86 26.31
Total charge (mA*ms) 265608 280736
The following figure illustrates the zoomed-in section showing the profile during transmission of beacon request.
Figure 5-5. Beacon Request and Response
  1. A – Beacon request TX
  2. B – RX to receive beacon response from nearby PAN coordinator
  3. C – Reception of beacon response from PAN coordinator
  4. D – MAC ACK TX for the received beacon response
  5. E – RX to receive beacon response from nearby PAN coordinator
The following table provides details about a snippet from the reference sniffer log captured during this scenario for reference. Packet 1 is the beacon request from the sleeping end device, and the PAN coordinator sends the beacon response for the beacon request (packet 1) received from the sleeping end device, which is followed by the MAC ACK from the DUT to PAN coordinator.
Table 5-3. Sniffer Packet Capture of Beacon Request and Scan Duration
Packet N Time (s) Frame MAC Source MAC Destination
1 0.000000 Beacon request 0x069162fffe21bbd0 0xffff
2 0.012966 Beacon response 0x0000 0x069162fffe21bbd0
3 0.015959 ACK — —