淺談無線通訊技術發展與同步安全議題

本文從歷史角度，回顧了第一代到第五代無線通訊技術發展；並以規範與標準為時序，探討傳輸實體層的實現、性能指標和各種新服務所需的同步要求。第五代無線通訊網路無疑在無線世界掀起一場革命，它實現高傳輸速率、高頻譜效率、多設備連接、低端到端時延和高可靠性的通訊品質。然而，掀起這場革命的同時，新的傳輸實體層架構以及同步需求取決於新的應用與服務；因此，規範與標準的制定益趨向於應用與服務導向。本文藉由通訊發展史，協定與標準制定的軌跡，探討第五代通訊的技術發展與同步時脈網路面臨的安全議題。

關鍵字

無線通訊；傳輸實體層；同步；第五代無線通訊的基地臺；行動通訊

並列摘要

This article addresses synchronization techniques for wireless communications. In a historical viewpoint, the synchronizations required for first generation (1G) to fifth generation (5G) mobile communications to achieve performance metrics and provide various new services are reviewed. New synchronization specifications/standardizations may depend on specific applications; therefore, growing application- or service-oriented. New challenges occurred within the synchronization techniques are also raised.

並列關鍵字

Wireless Communication ； Physical Layer ； Synchronization ； eNB ； mobile communication

參考文獻

Gardner F. M., 1984, “Phaselock Technique,” IEEE Transactions on Systems, Man, and Cybernetics, 14(1), 170-171. doi:10.1109/TSMC.1984.6313286

Lin J.-C., 2002a, “Differentially Coherent PN Code Acquisition with Full-Period Correlation in Chip-Synchronous DS/SS Receivers,” IEEE Transactions on Communications, 50(5), 698-702. doi:10.1109/TCOMM.2002.1006549

Lin J.-C., 2002b, “Noncoherent Sequential PN Code Acquisition Using Sliding Correlation for Chip-Asynchronous Direct-Sequence Spread-Spectrum Communications,” IEEE Transactions on Communications, 50(4), 664-676. doi:10.1109/26.996081

Lin J.-C., 2018, “Synchronization Requirements for 5G: An Overview of Standards and Specifications for Cellular Networks,” IEEE Vehicular Technology Magazine, 13(3), 91-99. doi:10.1109/MVT.2018.2813339

Lin J.-C., Sun Y.-T., and Poor H. V., 2016, “Initial Synchronization Exploiting Inherent Diversity for the LTE Sector Search Process,” IEEE Transactions on Wireless Communications, 15(2), 1114-1128. doi:10.1109/TWC.2015.2485262

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淺談無線通訊技術發展與同步安全議題

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