Energy Efficient Pico Cell Range Expansion and Density Joint Optimization for Heterogeneous Networks with eICIC

. 2018 Mar 2;18(3):762. doi: 10.3390/s18030762

Algorithm 1: CRE Bias Optimization (CBO) Algorithm.

1. Initialization:
(1) Initialize the network scenario and the values

λ_{u}

λ_{m}

and

ρ_{p, m}

, where

ρ_{p, m} \in (0, 30]

.
(2) Set the initial value of

B_{p} = 0.1

.
(3) Denote

κ

as the variable step length of

B_{p}

. Denote

E E^{*}

as the optimal value of the network EE. Denote

B_{p}^{*}

as the optimized CRE bias. Let

B_{p}^{*} = B_{p}

E E^{*} = E E (B_{p}) |_{λ_{p}, ρ_{p, m}}

and

κ = 0.1

.
2. Calculate the optimal pico CRE bias
while

B_{p} \leq 25

B_{p} = B_{p} + κ

E E^{'} = E E (B_{p}) |_{λ_{p}, ρ_{p, m}}

according to Equation (14)
if

E E^{'} > E E^{*}

then

B_{p}^{*} = B_{p}

E E^{*} = E E^{'}

end if
end while