隨著無線感測網路上的研究不斷成長，相關的應用也不斷出現，也因此底層網路與上層應用的整合也就愈趨重要。如何利用中介軟體來協同上下層運作，以及運用其中間層的特性來輔助上下層的使用效率，將會是無線感測網路未來發展的一個重要課題。
在此論文中，我們提出了一個新的中介軟體架構，稱為流量控制協同運作中介軟體，藉由此中介軟體我們可以提供上層的使用者區域概念的資訊，而不需直接面對所有的節點，並且能讓不同類型的應用在同一系統下協同運作，同時還利用了來回時間這段延遲區間，來有效過濾短時間內重複的查詢，進而達到流量控制的目的。另外利用傳輸記錄及底層資訊來達到壅塞控制。實驗與模擬證明所採用的機制確實比沒有使用本機制的情況大幅減少查詢的次數。我們同時也以實作的方式實現了此中介軟體。

In recent years, wireless sensor networks have drawn a lot of attention in both academics and industry. More and more applications have been developed by taking the advantages of wireless sensor networks. How to seamlessly integrate the functionalities at different protocol layers to meet the requirements of the application has become an important issue. It seems natural to apply the concept of middleware on resolving the integration issue. Currently, applying middleware in improving the efficiency of wireless sensor networks has been a popular topic.
In this thesis, we propose a new architecture of middleware, called “Middleware for Traffic and Congestion Control”, to reduce the traffic load and reduce the congestion level in wireless sensor networks in order to conserve power consumption. The proposed architecture is aimed to hide the lower layer complexity from the higher layer without sacrificing the flexibility and programmability. Redundant queries are filtered out, based on the round trip time, in order to reduce the traffic load in the network system. Based on the status of current queries, congestion is mitigated by delaying future queries to avoid congestion in the network. The simulation results have shown that the traffic generated by queries has greatly reduced by adopting the proposed architecture. Finally, the proposed middleware architecture has been implemented on a real wireless sensor system.

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