發(fā)布時(shí)間：2018-04-11 10:12

  本文選題：LTE-A + 綜測(cè)儀�。� 參考：《華中科技大學(xué)》2014年碩士論文

【摘要】：LTE-A綜測(cè)儀能實(shí)現(xiàn)對(duì)LTE-A終端性能特性和設(shè)計(jì)方案的全面檢測(cè)，有效提高LTE-A終端研發(fā)效率和生產(chǎn)質(zhì)量，促進(jìn)LTE-A終端技術(shù)的成熟，推動(dòng)LTE-Advanced產(chǎn)業(yè)的發(fā)展。本文源于國(guó)家科技重大專項(xiàng)“TD-LTE-Advanced終端綜合測(cè)試儀表開(kāi)發(fā)”，論文的主要工作包括： （1）在LTE-A綜測(cè)儀MAC層協(xié)議軟件的設(shè)計(jì)中。首先結(jié)合MAC層功能需求進(jìn)行難點(diǎn)分析，針對(duì)各難點(diǎn)給出建立HARQ通道時(shí)序關(guān)系表、設(shè)計(jì)HARQ通道狀態(tài)轉(zhuǎn)換圖、獨(dú)立載波調(diào)度、零拷貝、減少使用中斷和信號(hào)量等設(shè)計(jì)思路，然后對(duì)MAC層協(xié)議軟件架構(gòu)和層間接口進(jìn)行設(shè)計(jì)，MAC層與RLC層、RRC層通過(guò)環(huán)形緩沖隊(duì)列交互控制信息和數(shù)據(jù)包，MAC層與PHY通過(guò)以太網(wǎng)接口進(jìn)行信息交互，MAC層協(xié)議軟件包括MUX、HARQ、MAC控制、調(diào)度、隨機(jī)接入和MAC Common6個(gè)子模塊，分別用于實(shí)現(xiàn)復(fù)用/解復(fù)用、HARQ、MAC層控制元素管理、資源調(diào)度、隨機(jī)接入和高層控制消息處理，最后對(duì)每個(gè)子模塊的進(jìn)行具體設(shè)計(jì)。 （2）在LTE-A綜測(cè)儀MAC層協(xié)議軟件的測(cè)試工作。首先分析了MAC層協(xié)議軟件的測(cè)試需求，包括HARQ時(shí)序測(cè)試、HARQ功能測(cè)試、復(fù)用/解復(fù)用測(cè)試、BSR測(cè)試、下行資源分配測(cè)試、隨機(jī)接入測(cè)試、MAC層集成測(cè)試和MAC與RLC聯(lián)測(cè)。然后設(shè)計(jì)一種基于VC開(kāi)發(fā)環(huán)境的測(cè)試平臺(tái)，包括eNB側(cè)和UE側(cè)測(cè)試軟件，兩者的實(shí)現(xiàn)均采用多線程模型并通過(guò)socket進(jìn)行通信，，前者通過(guò)時(shí)序包周期性喚醒后者以實(shí)現(xiàn)協(xié)議處理的同步。最后依次對(duì)各項(xiàng)測(cè)試進(jìn)行了詳細(xì)設(shè)計(jì)并對(duì)具體結(jié)果進(jìn)行了分析，測(cè)試結(jié)果表明MAC協(xié)議軟件各項(xiàng)基本功能運(yùn)行正常，且具有良好的穩(wěn)定性。
[Abstract]:LTE-A comprehensive measurement instrument can realize the overall detection of LTE-A terminal performance characteristics and design scheme, improve the efficiency and production quality of LTE-A terminal research and development, promote the maturity of LTE-A terminal technology and promote the development of LTE-Advanced industry.This paper originates from the national science and technology major project "TD-LTE-Advanced terminal comprehensive test instrument development". The main work of this paper includes:1) in the design of MAC layer protocol software of LTE-A comprehensive measuring instrument.Based on the analysis of the function requirements of MAC layer, this paper presents the design ideas of establishing the HARQ channel timing relation table, designing the HARQ channel state transition diagram, independent carrier scheduling, zero copy, reducing the use of interrupt and semaphore, etc.Then the design of MAC layer protocol software architecture and interlayer interface between MAC layer and RLC layer through ring buffer queue interactive control information and data packet MAC layer and PHY through Ethernet interface information exchange MAC layer protocol software including MAC control, scheduling,Random access and MAC Common6 submodules are used to implement the control element management, resource scheduling, random access and high level control message processing in the MAC layer of multiplexing / demultiplexing, respectively. Finally, the specific design of each sub-module is carried out.2) testing the MAC layer protocol software of LTE-A comprehensive tester.Firstly, the testing requirements of MAC layer protocol software are analyzed, including HARQ timing test, multiplexing / demultiplexing test, downlink resource allocation test, random access test and MAC / RLC integration test.Then a test platform based on VC development environment is designed, including eNB side and UE side test software. Both of them are implemented by multi-thread model and communicate through socket.The former rouses the latter periodically to realize the synchronization of protocol processing.Finally, each test is designed in detail and the concrete results are analyzed. The test results show that the basic functions of the MAC protocol software are running normally and have good stability.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN929.5

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