Energy-aware Routing Based On Geocast In Wsn

In the third information revolution, networking plays an important role. Its industrial chain covers identity, perception, processing and transmission of information, whoes key technology consist of RFID, sensors, smart chips and wireless sensor networks. In this paper, the wireless sensor network routing algorithm is studied, energy-aware routing based on geocast in wsn is proposed.The paper introduces the four elements of energy-aware routing based on geocast:interests of energy; data; gradient of energy and path reinforcement. Interests of energy is a query that contains two part of information:one is what you need, and the other is the value energy; data describes a sensor event, which is a tuple of attributes and values; energy gradient a forwarding state, which indicated by the forwarding direction of data according to the energy of the neighbor node; reinforcement is the path of the last verification process used by the data broadcast.Distinct from conventional router algorithm, the information of interest contain with the energy of source node. Therefore, when the intermediate node receives interest, they store the information in the cache, which is ready for the route search. In the route searching phase, each intermediate node determines whether to forward data based probability of the area. When there are no dead zones distinct from the network, make network load balancing as much as possible. By this way, we can reduce energy consumption.On the open source embedded systems-contiki, we implementation algorithm of energy-aware routing based on geocast, and with the auxiliary of simulation platform to make an evaluation of the network life cycle assessment. The wireless network of experiment consistent of1200micaZ nodes, which be respectively configured by directed diffusion algorithm, the Two-Tier Data Dissemination (TTDD), LEACH routing algorithm and Geographic Adaptive Fidelity (GAF). Finally, the experiment show that stability and energy efficiency and in the network of energy-aware routing based on geocast is excellent.