N
_{
death
}

The number of dead nodes

E

The initial energy of nodes

E
_{
re−le
}

The remaining energy of a leader

E
_{
re−no
}

The remaining energy of a nonleader

itMovingID

The set of the it ID of moving nodes

t

The moving time of a moving node

t
_{
max
}

The maximum time allowing to move

v

The moving rate of a moving node

NL
_{
i
}

The nonleader node i

SR
_{
i
}

The sensing radius of node i

T
_{
i
}

The set of nonleaders with the ascending order of it ID

T
_{
i
}

The size of T
_{
i
}

δ

The minimum energy cost when sends one message
