Research On The Reliable Routing Protocols For Wireless Sensor Networks

Wireless Sensor Networks(WSNs), as one of three high science & technique industry, will be widely applications and have good foreground in national defense and military affairs environment detection, medical treatment and nurse, intellectual habitation, etc. However, because of intricate environment which nodes work on, some of nodes may usually face with lapsing. Therefore, how to promote reliable data transmission on networks is greatly important significance in variation topo network structure. Thus, the route protocols is above all taken into account and researched.Research on basic notion system on routing reliability, based-on notion, unpuzzles meaning of reliability on routing, estimating standard and main mechanism, studies and analyses two types of approaches to achieve reliable routing mechanism. One is multipath of based on redundancy, which can assure to tranfer data from source node from destination node, when some nodes become invalid, and the other is based on probability evaluating.When values quality of link, find out best link relaying data. Each of methods is characteristic of itself. From two type mechanism of models, structure and every period on routing, reliability is analysed, especially, routing select rule is put forward by simulation. Finally, network nodes in hard working condition must be agreed to their routing protocols. Above all, it must save energy. And then, reliability and security about network is cared for itself. Research on the reliable routing based on saving energy just practical significance. From above two sides, a Split Multipath Routing (SMR) protocol is improved. It is studied and analyzed at some phases of routing, including seeking and selecting path, transmitting data and maintaining and updating routing so on. By comparisons, it is superiority to the other protocols after several protocols is simulated.With various technologies ceaseless developing and interrelated protocols further researching, more fitting applied WSNs routing protocols based-on cross layer will incessantly bring forward.