Algorithm 1: disabled_coverage_measuring (DS[], G[])
	Input: set DS[]: disabled signal strength group, a grid group G[]
	Output: set G[]: checked grid group
1:	for each G do
2:	for each DS[]: ds do
3:	if ds.GPS in G.range then
4:	g.Eabled = false
5:	g.Rep_strength = ds.strength
6:	endif
7:	endfor
8:	endfor
9:	return G[]