The invention relates to the filed of radio communication, and discloses a multiband scheduling system in radio communication network and method thereof. In the invention, two layers of scheduling mechanisms are used, one layer is band scheduling, the other layer is scheduling between bands, which not only makes full use of multiband with non-continuous band, but also is compatible conventional scheduling function and structure of a single frequency band system, to reduce upgrade cost of the system. The same data packet should integrally schedule the same band.