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Cluster-based routing protocols.
| Protocol | Characteristics | |||||
|---|---|---|---|---|---|---|
|
| ||||||
| Goal | Metrics | Avg. Delay | PDR | Security | Energy Cons. | |
| HIT (2004) | To maximize the network life and reduce the direct transmissions to the sink | Geographic information & residual energy of the nodes | Low | N/A | Yes | Low |
| AnyBody (2007) | To reduce the direct transmission of the nodes to the sink node | Nodes density | N/A | Very High | No | N/A |
