Algorithm 4 Relay device

Input:$R_{msg}$ (Request message containing node ID, message ID and GPS coordinates)    $Ac{k}_{msg}$ (Acknowledgment message)    $AV{B}_{net}$ (Available Networks) Output:$R_{msg}$ (Request message containing node ID, message ID and GPS coordinates)    $Ac{k}_{msg}$ (Acknowledgment message)

1:procedure 2: Step 1: defining and initializing variables 3:    Scan $AV{B}_{net}$ 4:    Apply DIA Algorithm (assigns ID) 5:    Apply MMN Algorithm ( returns Min & Max ID) 6: Step 2: detecting events 7: while 1 do 8:  if $R_{msg}=true$ then 9:    send $R_{msg}$ to $Mi{n}_{ID}$ 10:  end if 11:  if $Ac{k}_{msg}=true$ then 12:    send $Ac{k}_{msg}$ to $Ma{x}_{ID}$ 13:  end if 14: end while 15:end procedure