無線感測網路(Wireless sensor networks)中，多個感測器(sensor)分布在監視的區域內，偵測欲監視的事件，當事件發生時，離事件最近的感測器將感測到的資料傳遞給專門收集資訊的節點─接收點(sink)。在這篇論文探討的環境中，網路是由許多不會移動的感測器所組成，而接收點可能會移動。如何有效率地從多個資訊發送點傳送資料到行動式接收點是這篇論文所要探討的問題。
接收點的移動(Sink mobility)對無線感測網路帶來一項挑戰。之前有些方法被提出，他們都建議每個移動式接收點(mobile sink)的位置資訊需要持續的傳播到整個感測網路上。然而，經常地更新位置資訊會導致感測器能量的損耗以及增加無線傳輸的碰撞(collisions)。在這篇論文當中，我們提出了一個以位能為基礎的資料散播協定(Potential-based Data Dissemination Protocol)，我們選擇擁有最大剩餘電量且接近最短的路徑來傳送從資訊發送點(source)送往接收點的資料，透過這樣的方式，有效地延長網路存活時間(Network lifetime)。當感測器收到資料將儲存資料一段時間。當擁有有效資料的感測器接到要求封包，它將代替資料發送點，送資料給接收點，透過這樣的方式，資料可以經由較少的感測器就送達接收點，因此可以延長網路存活時間，並且減少傳送延遲(delay)。我們經由模擬的方式評估比較我們提出的方法和其他方法的效能。結果顯示，我們提出的方法是比較好的方法來散播感測資訊，而且當接收點移動的時候，仍可以提供高的資料可得性。

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