隨著網絡不斷增長的需求使低地球軌道 (Low-Earth Orbit, LEO) 衛星地面網絡成為一個有吸引力的選擇。LEO衛星地面通信具有距離遠、移動速度快的特點，導致傳輸延遲和路徑損耗的不確定性，導致地面終端用戶（User Terminal, UT）難以確定合適的DRX（Discontinuous Reception）策略來減少能源消耗。本文中提出了一種用於 LEO 衛星地面傳輸的 DRX 模型，該模型應用了子狀態並引入了新的狀態，延遲狀態，以適應傳輸的變化。模擬結果顯示了本文提出的 DRX 模型對節能性能和延遲測量的影響，並為影響能源消耗和平均延遲的結果提出了對應的見解。;The rising demand for networks makes low-earth orbit (LEO) satellite-terrestrial networks an attractive option. LEO satellite-terrestrial communications have the characteristics of large distance and fast-moving speed result in delay and path loss uncertainty, which will lead terrestrial user terminals (UTs) hard to determine suitable DRX (discontinuous reception) strategy to enhance the performance. In this thesis, we propose a new DRX model for LEO satellite-terrestrial transmissions that applies substates and introduces a new state, Delay State, to accommodate changes in transmissions. We further analyze the power saving factor and average delay of the model. Simulation results show the impact of our DRX model on power saving performance and latency measurements, and provide corresponding insights into the results affecting energy consumption and average delay.
