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GMR通信系統(tǒng)無線資源控制層協(xié)議軟件的設(shè)計與實(shí)現(xiàn)

發(fā)布時間:2019-05-17 09:25
【摘要】:如今新一代衛(wèi)星移動通信系統(tǒng)大多數(shù)都支持GMR-1 3G(GMR,Geostationary earth orbit Mobile Radio interface)標(biāo)準(zhǔn),該標(biāo)準(zhǔn)是由歐洲電信標(biāo)準(zhǔn)化研究所ETSI(European Telecommunications Standards Institute)發(fā)布的地球同步軌道衛(wèi)星移動通信空中接口技術(shù)規(guī)范,從基于GSM(Global System for Mobile communication)標(biāo)準(zhǔn)的通信系統(tǒng)GMR-1演化而來。GMR-13G通信系統(tǒng)為地面提供基于同步衛(wèi)星的3G移動通信業(yè)務(wù),而如何保證對通信過程中控制信令的有效處理并進(jìn)行可靠傳輸是整個系統(tǒng)研究實(shí)現(xiàn)中需要解決的重要問題。與GMR-1先前發(fā)布的版本相比,空中接口協(xié)議部分的第三層即RRC(Radio Resource Control)層的功能發(fā)生了較大的改變,控制管理功能主要集中在了RRC層中,狀態(tài)控制及協(xié)議中規(guī)定的連接狀態(tài)也發(fā)生了相應(yīng)的變動。本文關(guān)于GMR通信系統(tǒng)無線資源控制層協(xié)議軟件的設(shè)計與實(shí)現(xiàn)就是以解決上述問題為基礎(chǔ),依附于整個GMR-1 3G協(xié)議棧系統(tǒng)軟件,最終完成了RRC無線資源控制層的主體功能,即對通話過程和入網(wǎng)過程中控制信令進(jìn)行有效的處理。本文是以GMR-1 3G標(biāo)準(zhǔn)的基站側(cè)空中接口協(xié)議為基礎(chǔ),在對協(xié)議總體有所了解之后,對RRC層協(xié)議進(jìn)行了詳細(xì)的分析和研究,然后設(shè)計并編碼實(shí)現(xiàn)了協(xié)議中對RRC層關(guān)于控制消息的處理功能。在RRC系統(tǒng)設(shè)計過程中,將其劃分為模塊設(shè)計和過程設(shè)計。在實(shí)現(xiàn)過程中,是基于Vx Works實(shí)時操作系統(tǒng)的Workbench集成開發(fā)環(huán)境和C語言來實(shí)現(xiàn)代碼的編寫和編譯,并使用基于Vx Works實(shí)時操作系統(tǒng)的AM4140板卡來完成對RRC系統(tǒng)的功能和協(xié)議的一致性驗(yàn)證。本文所設(shè)計的RRC層系統(tǒng)架構(gòu)和基于Vx Works操作系統(tǒng)的C語言實(shí)現(xiàn),很好的完成了RRC層對來自各層的控制消息、請求及其它事件的處理,實(shí)現(xiàn)了RRC過程在一次資源分配下的流程控制。通過和終端、核心網(wǎng)的聯(lián)合測試,RRC層能完成終端入網(wǎng)和通話過程中協(xié)議規(guī)定的所有功能。
[Abstract]:Today, most of the new generation of satellite mobile communication systems support GMR-1 3G (GMR,Geostationary earth orbit Mobile Radio interface) standard). The standard is a technical specification for the air interface of geosynchronous orbiting satellite mobile communications issued by the European Institute for Telecommunications Standardization (ETSI (European Telecommunications Standards Institute). Evolved from GMR-1, a communication system based on GSM (Global System for Mobile communication) standard. GMR-13G communication system provides 3G mobile communication services based on synchronous satellites for the ground. How to ensure the effective processing and reliable transmission of control signaling in the communication process is an important problem to be solved in the research and implementation of the whole system. Compared with the previous version of GMR-1, the function of the third layer of the air interface protocol, that is, the RRC (Radio Resource Control) layer, has been greatly changed, and the control and management functions are mainly concentrated in the RRC layer. The state control and the connection state specified in the protocol have also changed accordingly. In this paper, the design and implementation of wireless resource control layer protocol software for GMR communication system is based on solving the above problems, attached to the whole GMR-1 3G protocol stack system software, and finally completed the main function of RRC wireless resource control layer. That is to say, the control signaling in the process of calling and entering the network is processed effectively. This paper is based on the base station air interface protocol of GMR-1 3G standard. After understanding the protocol as a whole, the RRC layer protocol is analyzed and studied in detail. Then the processing function of control message in RRC layer is designed and encoded. In the process of RRC system design, it is divided into module design and process design. In the process of implementation, the Workbench integrated development environment and C language based on Vx Works real-time operating system are used to write and compile the code. The AM4140 board based on Vx Works real-time operating system is used to verify the function and protocol of RRC system. The RRC layer system architecture and the C language implementation based on Vx Works operating system are designed in this paper, and the RRC layer processes the control messages, requests and other events from each layer very well. The process control of RRC process under the primary resource allocation is realized. Through the joint test with the terminal and the core network, the RRC layer can complete all the functions specified in the protocol during the terminal access to the network and the call process.
【學(xué)位授予單位】:哈爾濱工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN927.23

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 朱芹;屈剛;劉璐;;TD-LTE系統(tǒng)連接建立過程的研究與實(shí)現(xiàn)[J];信息技術(shù);2013年08期



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