由於WiMAX系統中，針對各種不同傳輸服務，其傳輸率、佔用頻寬、服務品質需求等各種不同的服務品質參數皆能有效的支援，而在現代各種資料通訊的應用非常廣泛，因此如何能夠在WiMAX系統上將各種不同媒體的服務提供最佳的品質服務傳輸，快速且有效的頻寬資源管理是非常重要的方向。

固本篇針對WiMAX網路在每個連線中依照不同的品質服務等級分配最低所需的要求頻寬，而這些最低所需的頻寬將於連線一開始建立時即給定，這些最低的頻寬足夠符合每個等級的最低傳輸情況，並將最低頻寬分配至所有連線要求完成後，剩餘的頻寬再依照不同品質服務等級而給予不同分配的比率，來達到符合於每個品質服務對頻寬的要求的目的。

In the system of WiMAX，different transmission rate , allocate bandwidth and other QoS parameters can be provided to different kind of service .It is important to provide optimum QoS transmission for different application and efficacious bandwidth resource control for the WiMAX system.
In WiMAX system, each connection is assigned with different number of slots in one frame. These numbers will be decided by the BS when the connections are set up. The assigned slots in one frame will satisfy the basic requirement of each connection. When all the connections have been assigned as required, there might be some slots of the frame left. In our paper, the left slots can be reassigned to all the connections with our protocol. In this rearrangement, each class of service flow will get fixed ratio of the left slots. The gained slots in this round will be distributed evenly to the connections of the same class.

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