Ad hoc network is a sort of self-organizing network that relies on no fixed infrastructure. Each node can act as a host to send and receive its own data, or as a possible router to forward data to other nodes. In the Ad hoc networks, routing algorithms are one of the main factors that constrain network transmission performance. Routing control overhead is an important indicator for evaluating routing protocols. Routing control messages can occupy network resources, and a large number of routing control messages can even lead to network congestion. This article proposes a lightweight network protocol that reduces routing control overhead from multiple aspects. Firstly, we propose a hybrid signaling model. Secondly, we simplify the routing process. Finally, we simplify the control messages.