隨著無線接取技術不斷的進步，行動上網所能提供的頻寬也逐漸增加，電信業者為了追求利益最大化，便開始多角化經營，例如中華電信、NTT或AT&T等等…，皆有提供全球行動通訊系統(GSM)、高速下行分組連接(HSPDA)、WiFi(Wireless Fidelity)或全球互通微波存取(WiMAX)多種以上的無線接取技術服務，藉由多種而且方便的無線接取技術，讓使用者能在任何地方、任何地點都可以行動上網。當一個業者提供多種接取技術後，便會面臨到不同接取技術所帶來龐大的網路流量，要如何在一條且有限頻寬資源的骨幹網路中，有效、公平的管理這些龐大的網路流量，將會是一個很大的挑戰。於是我們將藉由一個簡單且有效的方法分配使用者的服務請求、縮短使用者的服務請求的完成時間，並同時提升骨幹網路的使用率，以達到有效管理骨幹網路的頻寬。

As wireless technologies revolutionized, a carrier operator may need to construct different types of wireless networks (such as HPDPA, Wi-Fi and WiMAX) for their customers to become a multi-wireless-carrier operator. Meanwhile, with such a convenience of the wireless access, multimedia services become ubiquitous so as to stimulate the bandwidth consumption. Therefore, lots of varied traffic from heterogeneous access networks may be poured into Internet through a common backbone in the operator. How to efficiently arrange and manage the network backbone bandwidth in order to offer better service for users and make more revenue for the operator is a challenging issue for a multi-carrier network operator. In this study, we propose heuristic solutions for the efficient backbone bandwidth management in a multi-wireless-carrier operator by well allocating heterogeneous wireless access requests and fully utilizing the unused backbone network bandwidth.

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