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| 題 名 | 開放式平臺如何實現控制介面即時性需求之研究=Research on Open Platform for Real-time Requirement of Control Interface |
|---|---|
| 作 者 | 陳富城; 王立昌; | 書刊名 | 電腦與通訊 |
| 卷 期 | 158 2014.08[民103.08] |
| 頁 次 | 頁18-25 |
| 專 輯 | 無線寬頻行動通訊技術專題 |
| 分類號 | 448.6 |
| 關鍵詞 | 媒介存取控制層; 開放式平臺; 長程演進技術; MAC layer; Open platform; Long term evolution; LTE; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 電信服務供應商為了降低布建成本,提出雲端無線接取網路的架構,此架構將 MAC層與PHY層功能模組分離,將MAC層功能集中到雲端,再以開放式平台執行,因此MAC層與PHY層模組間控制介面便產生對即時性的需求。本文以低於 LTE系統五分之一的subframe時間(0.2毫秒)為目標,提出MAC層與PHY層之新介面,並在 x86電腦之開放式平台上模擬此介面,實現 Gbps等級之寬頻無線接取。實測控制介面之延遲時間顯示可達數百微秒的即時性,若將來 MAC層提前兩個 subframe時間運作,則能實現與實體基頻整合之即時性。 |
| 英文摘要 | In order to reduce the cost of building, operating and upgrading the Radio Access Network (RAN), mobile operators proposed a new architecture, Cloud-RAN (C-RAN), which are performed by open platforms. The proposed separates the functional modules of MAC layer and PHY layer by centralizing MAC functions into the cloud. Thus, the real-time requirement for control interface between MAC and PHY is induced. In this paper, a subframe of length is 0.2 ms, which is one-fifth of LTE systems is considered. A novel design of the interfaces between MAC and PHY is proposed and emulated on x86 computers to accomplish a Giga-bps level broadband wireless access system. In the designated architecture, the measured results of delay time show that the immediacy is up to hundreds of microseconds. Therefore, if the MAC layer operates in advance of two subframe time, the real-time requirement for integration with baseband can be achieved. |
本系統中英文摘要資訊取自各篇刊載內容。