Table 3.

The most significant roles of GT in WSN design.

	Role	References
(1)	Routing protocol design	[13,77,107]
(2)	Target tracking	[108–110]
(3)	Power control	[52,69,89,94,111–121]
(4)	Energy saving	[122,123]
(5)	Data collection	[77,124]
(6)	Topology control	[3,37,125,126]
(7)	Spectrum allocation	[90,96]
(8)	Bandwidth allocation	[42]
(9)	Packet forwarding	[29,41,104–106,127,128]
(10)	Task scheduling	[55,129]
(11)	Quality of Service (QoS) control	[24]