User Association Strategy for Energy Efficiency and Interference Mitigation of Heterogeneous Networks

Algorithm 1

: Optimal user association.

	Initialize the weights of criteria: , and
	Initialize the coverage of the BS: .
	Initialize the list of users: #ListUsers
	Initialize the list of the available BSs: #ListBS
	fordo
	fordo
	ifthen
	Compute , , using equations (7) and (8)
	Compute
	end if
	end for
	end for
	fordo
	fordo
	Compute using equations (4)–(6)
	Calculate EE
	Calculate SINR
	end for
	end for