Study the multipath transmission problems of the different services in Wireless Multimedia Sensor Networks
(WMSN). To further effectively utilize networks resources, the multipath mechanism and service-aware is used to
improve performance of OLSR(Optimized Link State Routing). A SM-OLSR(Service-aware Multipath OLSR)
algorithm is proposed. An efficiency model is introduced, then multipath is built according to the routing ID and
energy efficiency. Compared with other routing algorithms, simulation results show that the algorithm can provide
service support for different data.