Abstract: 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 achieves route discovery and service discovery, but also decreases control packets efficiently and keeps lower delay of service discovery. SCAODV protocol also achieves security certificate based on the symmetric encryption technology between service requester and service replier in the process of service.

Key words: service discovery, mobile ad hoc network, cross-layers design, security certificate

摘要： 将路由发现和服务发现过程结合，提出了基于CAODV协议的具有安全认证扩展的SCAODV协议。通过NS2仿真实验证明，SCAODV协议在实现路由发现的同时完成了服务发现，并有效地降低了网络开销和端对端时延。SCAODV协议还实现了服务发现过程中服务请求者和服务提供者的一种基于对称密钥体系的安全认证机制。

关键词: 服务发现, 无线自组网, 跨层设计, 安全认证