Reliability Analysis and Loading Application in Circuits for Next Generation Transport Network

[[abstract]]隨著無線通信技術的快速演進與多媒體應用服務的廣泛應用，在可預見的未來，現有3G 通信系統2 Mbps 下鏈路資料傳送速率已無法滿足消費者高品質且快速的數據資料服務需求。因此藉由一高速下鏈路封包接取系統(HSDPA-High Speed Downlink Packet Access)的空中介面技術發展，將能夠有效提升下鏈路數據封包傳輸速率至10.7~14.4 Mbps。本論文中，我們開發行動寬頻之行動後置網路以滿足HSDPA 無線基地台的頻寬需求並利用可再配置光塞取多工器的訊務規劃做下一代光網路之可靠度分析研究。行動寬頻之行動後置網路指的是提供無線基地台到無線網路控制器中的傳輸介面，我們利用下一代同步數位階層與光交接機系統建立此傳輸介面給HSDPA 無線基地台使用，在這行動後置網路中，我們做了IP 乙太網路的封包測試與障礙排除，以確保行動後置網路設備穩定度與可用度，避免基地台大批倒台，最後我們展示了高速下鏈封包存取之無線基地台相關細胞話務量與品質指標的量測統計，結果符合我們預先之規劃與訊務目標。[[abstract]]As the fast revolution of wireless communication and broad application of multimedia service, the 2 Mbps downlink data rate of the present 3G communication system can’t satisfy the consumer with fast and high quality packet data service. The downlink packet data rate can be upgraded 10.7~14.4 Mbps by using the HSDPA (High Speed Downlink Packet Access) air interface. In this paper, we present the whole planning process in mobile backhaul and propose our network availability analysis for the ROADM (Reconfigurable Optical Add-Drop Multiplexer) design in NGN (Next Generation Network). The term mobile backhaul is commonly used for the fixed wire-line and/or wireless interconnections of mobile service base stations and their connections to the core telecommunications network. We have developed the NGSDH+OXC systems in the fixed wire-line for the HSDPA offload. The cells’traffic statistic and communication quality measurement results of the HSDPA area show that our planning is successful and satisfied with the standard of QoS