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Table 1 Notations used in 5G and beyond wireless network planning

From: Planning capacity for 5G and beyond wireless networks by discrete fireworks algorithm with ensemble of local search methods

Symbol Definition
B Set of base stations (BSs) sites.
R Set of relay stations (RSs) sites.
T Set of User Equipment (UE) or users.
(b,r) Denotes link between BS b and RS r.
(b,t) Denotes link between BS b and UE t.
(r,t) Denotes link between RS r and UE t.
\(c_{b}^{B}\) Denotes BS cost at BS site b.
\(c_{r}^{R}\) Denotes RS cost at RS site r.
\(l_{b,r}^{BR}\) Denotes path loss associated with link (b,r).
\(l_{b,t}^{BT}\) Denotes path loss associated with link (b,t).
\(l_{r,t}^{RT}\) Denotes path loss associated with link (r,t).
\(m_{b,r}^{BR}\) Represents upper bound (e.g., channel capacity) on the possible information
  flow rate associated with the link (b,r).
\(m_{b,t}^{BT}\) Represents upper bound (e.g., channel capacity) on the possible information
  flow rate associated with the link (b,t).
\(m_{r,t}^{RT}\) Represents upper bound (e.g., channel capacity) on the possible information
  flow rate associated with the link (r,t).
\(u_{t}^{T}\) Denotes traffic demand of UE t.
C1 and Denotes the maximum capacity (in bits per second) for each
C2 Deployed BS and RS, respectively.
W1 and Weight parameters for two terms of objective function.
W2  
\(y_{b}^{B}\) Denotes binary decision variables that determine
  whether a BS b is deployed at BS site.
\(y_{r}^{R}\) Denotes binary decision variables that determine
  whether a RS r is deployed at RS site.
\(x_{b,r}^{BR}\) Binary decision variables that denotes whether a connection
  is established on corresponding links (b,r).
\(x_{b,t}^{BT}\) Binary decision variables that denotes whether a connection
  is established on corresponding links (b,t).
\(x_{r,t}^{RT}\) Binary decision variables that denotes whether a connection
  is established on corresponding links (r,t).