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Figure 4 | EURASIP Journal on Wireless Communications and Networking

Figure 4

From: DEMON: preemptive route recovery for AODV in multi-hop wireless networks based on performance degradation monitoring

Figure 4

Example of pETX ij computation performed by node j with a cycle of three Hellos. The notation of the Hello messages is Hello (sequence number and number of packets transmitted in the current cycle). Note that the fifth Hello is lost. However, by means of the sequence number, node j knows that the sixth Hello belongs to the same cycle as the one previously received (otherwise, a link break would have occurred), and thus node j can correctly compute the pETX metric.

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