本篇論文著重於巨量機設備通訊系統中，常見之封包過度碰撞問題。而本文中所提出單擊延遲方案之概念，主要為限制低電量設備所能競爭的次數，其目的為增加高電量設備成功獲得資料傳送之機率；除此之外，也助於延長低電量設備之生命週期。但是，限制競爭機會之機制可能會延宕資料流通的程序。因此，進一步提出可適性混合媒體存取控制協定來解決此燙手山芋，並使得資料吞吐量有所增長。不論是在排頭延遲、能源效率抑或是成功之設備數量……等各種不同之性能指標下，皆可藉由理論分析及模擬結果，來驗證我們所提出的方法較傳統之協定更為優越。

This paper targets on solving the high collision problem in the massive machine-to-machine communications. The main idea is to restrict the allowable number of contention to the low-energy devices (LEDs) by using the proposed make-or-break (MOB) backoff scheme such that the high-energy devices (HEDs) can have higher probability to attain time slots for data transmissions. In this fashion, the lifetime of the LEDs can also be prolonged. However, the restriction mechanism may detain the data forwarding process. To solve this dilemma, the adaptive frame structure is proposed to boost the data throughput. The analytical as well as simulation results demonstrate that with a huge amount of machine type devices (MTDs), the proposed scheme can outperform the conventional counterpart in the aspects of the head-of-line delay, energy efficiency and accommodation of the MTDs.

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