最近，新興的機器類型通信(MTC)在物聯網(IoT)中發揮著重要作用。為了支持對高速、高質量無線傳輸服務需求的增長，毫米波技術為大量設備提供了充足的頻譜資源和超高數據速率以及較低的延遲。在本文中，我們研究了設備間上行毫米波網路中頻譜共享暨正交空間調變輔助之延遲最小化方案(QDM)，目標是最小化毫米波網路中上行鏈路的端到端延遲。本文嘗試在第二層設備中添加正交空間調製並研究如何改善延遲。配對算法旨在通過將第二層的設備兩兩配對配來最佳化整體通道容量。此外，我們提供了一種低複雜度的頻譜分配算法，第二層的設備與其中繼點共享頻譜，以解決中繼點的瓶頸效應。透過仿真結果驗證，我們提出的方案的性能比傳統的波束成形方案實現了更低的端對端排隊延遲。

Recently , the emerging machine type communication (MTC) plays an important role in the internet of things (IoT). In order to support the increase in demand for high-speed, high-quality wireless delivery services, mmWave technology provides ample spectrum resources and ultra-high data rate as well as low latency for a great number of devices. In this paper, we investigated the QSM-aided Delay Minimization (QDM) scheme to minimize the uplink end-to-end delay of the package in uplink mmWave networks. This purpose attempts to add Quadrature Spatial Modulation in tier 2 and investigate how to improve the latency. The pairing algorithm is developed to optimize the overall capacity by pairing many pairwise in tier 2. Furthermore, we proffer a low-complexity spectrum allocation algorithm that the pairwise in tier 2 share the spectrum with their relay to solve the bottleneck in relays. Verified by the simulation results, the performance of the QDM scheme accomplish lower package end-to-end queueing delay than the conventional beamforming scheme.

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