Traffic and Energy Aware Optimization for Congestion Control in Next Generation Wireless Sensor Networks

Table 1

Notations and their description.

Notation	Description
	Average residual energy
	Initial energy
	Energy consumed in transmitting
	Energy consumed in receiving
	Delay
	Amplifying energy
d	Distance from source to base station
	Energy consumed on link
	Intermediate node count on link or hop count
	Lifetime of link
	Lifetime of complete network
	Data packet
	Data arrival rate
	Data service rate/departure rate
	Virtual buffer occupancy
	Maximum buffer size
	Congestion level
	Maximum threshold of buffer
TTL	Time to live
	Probability of selecting next hop
	Pheromone density
	Heuristic value
	Updated pheromone value
	Memory to store visited nodes
	Load to distance ratio
	Evaporation factor
	Load on node
	Distance from node to node
	Message generated per unit time
	Packet loss probability