Wireless Communications and Mobile Computing / 2017 / Article / Alg 3

Research Article

EE-eICIC: Energy-Efficient Optimization of Joint User Association and ABS for eICIC in Heterogeneous Cellular Networks

Algorithm 3

The input of rounding and association algorithm is the output of Algorithm 2.
(1) EE-ABS Rounding. To take and integer values.
,   (a)
where and is output of Algorithm 2.
(2) UE EE-Association for Downlink
,   (c)
where , , is output of Algorithm 2.
Computing , . If , UE associates with macrocell, or with picocell.
(3)  Energy Efficiency Computation
Firstly, calculate non-ABS and ABS utilization of downlink.
,   (e)
Secondly, for each user, calculate the time scale of subframe for downlink
Finally, the rate and power consumption of user can be computed.
For , .
For , .
So the EE of user: .

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