5.1.6 Reconnection to Same Parent

This section captures the power profile measured from the Mi-Wi sleeping end device while establishing a connection to the same parent without performing a scan for beacon responses. This scenario occurs in a network where the Network freezer feature is enabled. When the sleeping end device goes through a power cycle or is Reset, it directly sends a connection request to the last connected parent. If a network freezer is not enabled, the sleeping end device can transmit a beacon request and follow the regular procedure to connect to the nearby Mi-Wi Mesh network. This profile is identical to the node sending the connection request right after the beacon response scan duration.
Figure 5-14. SAM R30 XPro
Figure 5-15. SAM R30 Module XPro
  1. A – Connection request TX
  2. B – RX to receive response from PAN Coordinator
  3. C – Reception of connection response from PAN coordinator
  4. D – MAC ACK TX for the received connection response
  5. E – Transmission of periodic data request followed by periodic application data
Table 5-11. Parameters
Parameters SAM R30 XPro SAM R30 Module XPro
Total duration (ms) 48.6 49.2
Average current (mA) 13.17 12.88
Peak current (mA) 27.09 24.62
Total charge (mA*ms) 640.06 633.7
Table 5-12. Sniffer Packet Capture of Reconnection to Same Parent
Packet N Time (s) Frame MAC Source MAC Destination
1 296.559206 Indirect data request (until the end device disconnects from the network) 0x0001 0x0000
2 296.576157 Beacon request 0x069162fffe21bbd0 0xffff
3 321.377530 Beacon request 0x069162fffe21bbd0 0xffff
4 321.389498 Beacon response 0x0000 0x069162fffe21bbd0
5 321.390496 ACK — —
6 346.137969 Connection request 0x069162fffe21bbd0 0x0000
7 346.140921 ACK — —
8 346.151893 Connection response 0x0000 0x069162fffe21bbd0
9 346.154883 ACK — —