A cross-layers service discovery protocol for MANET

With the rapid development of Internet, MANET is becoming a popular network organization. Automatic service discovery plays an important role in the appliance of auto-finding and using the resource in the dynamic network environment, and it also can reduce the complexity of system configuration and maintenance. This paper proposes a new service discovery protocol called SCAODV which integrates route protocol and the process of service discovery. SCAODV protocol is based on CAODV protocol. The NS2 Simulation experiments prove that SCAODV protocol not only achieve route discovery and service discovery, but also decrease control packets efficiently and keep lower delay of service discovery. SCAODV protocol also achieve security certificate based on the symmetric encryption technology between service requester and service replier in the process of service.