Alert: An Adaptive Low-Latency Event-Driven MAC Protocol for Wireless Sensor Networks

Table 1

Summary of features and assumptions of the Alert Protocol.

Feature	Assumption or detail
Architecture	Single hop with a centralized base station. Base station is AC Powered
Transceiver	Only one transceiver in each node capable of switching frequency channels
Messages	Only one message by a node reporting an event
	Number of nodes reporting events likely a subset of entire deployment
Events	Very rare, but correlated among neighboring nodes
	Only one event report needs to reach the base station
Frequency table	Prespecified among nodes and switching pattern known to all nodes