<FONT face=Verdana>How to efficiently utilize the spectrum resource is one of the fundamental issues in wireless mesh networks. Recently some work began to explore the dynamic channel width adaptation. In this paper
we show the optimal channel width adaptation can be reduced into the “packing and compression” problem. And we propose distributed traffic-aware algorithms to jointly exploit channel width adaptation and the multi-interface technology for wireless mesh networks. Simulation shows our algorithms can significantly improve network performance.