[riot-notifications] [RIOT-OS/RIOT] GoMacH Protocol for IEEE 802.15.4 networks (#5618)
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Sat Sep 23 17:33:30 CEST 2017
Finished a third time experiment for evaluating GoMacH's stability:
This experiment is based on the `examples/gnrc_networking` which includes UDP and RPL.
There are one sink and 5 senders.
The sink initiates the RPL network and sets itself as the root. All the senders send packets to sink **using UDP**.
In the experiment, there are simultaneously two types of traffics:
1, **upward traffic** generated by son noders (senders) heading to the sink,
2, **downward traffic** generated by the sink heading to all senders.
For upward traffic, all senders use **UDP** to send packets to the link local address of the sink;
For downward traffic, the sink uses **UDP** to send packets to the configured ipv6 addresses of all the senders which are informed to the sink through RPL networking, i.e., downward traffic is based on RPL routing.
PS: In this experiment, the application layer didn't have a packet retransmission scheme to recover packet drops.
Other key MAC settings:
Cycle duration of GoMacH for all nodes: 200ms;
Maximum link layer packet retransmission: 6 times.
1) for upward traffic of senders: 1 packet/2 seconds per sender;
2) for downward traffic of sink: 1 packet/5 seconds (i.e., the sink sends a data to each specific sender every 25 seconds).
The experiment lasted about **48 hours** (two days).
For upward traffic: 431425 (received) / 431528 (generated) =99.976%
For downward traffic : 34594 (received) / 34604 (generated) = 99.971%
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