Wireless technology is gaining attention from users and researchers. Wireless network is a network composed of large number of sensor nodes. These sensor nodes communicate with each other and hence routers are selected. Routing is selected on the basis of routing protocols which are application specific. Sensor nodes in the network are battery powered. Hence route must be selected to make the communication efficient. In this paper, the authors have done a survey on network based structure routing protocols i.e. flat based routing, hierarchical based and location based in wireless sensor network for selecting optimal routes in the network for communication.