In order to reduce the complexity, increase spectrum utilization and decrease spectrum handoff as fairly as possible, a scheme of dynamic spectrum allocation and cooperation policy is proposed for wireless mobile sensor networks (WMSN). Maximizing the profit of network is realized by effective spectrum sensing and spectrum allocation in spare spectrum. The cluster head avoids collision by selecting right spectrum bound. The appropriate dynamic spectrum allocation model is given by combining the characteristics of WMSN, and then it is converted into an unconstrained optimization problem. A spec...