Based on the combination of graph coloring model and the concept of spectrum quality grading, the proposed algorithm allocated the available spectrum to cognitive radio cells to meet demand maximally under QoS guarantee.

• 使用图论着色模型，结合频谱质量分级概念，根据小区内需求情况，该算法将网络中周期检测到的可用频谱分配给各个认知小区，最大化满足需求的同时，为业务提供服务质量保障。