本文關(guān)鍵詞：蜂窩與D2D異構(gòu)網(wǎng)絡(luò)的同步技術(shù)方案研究與實(shí)現(xiàn)　出處：《北京郵電大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： D2D 同步 狀態(tài)模式 多線程 異構(gòu)網(wǎng)絡(luò)

【摘要】：設(shè)備直通(Device to Device, D2D)技術(shù)是一種在移動(dòng)終端間建立直接通信鏈路來(lái)傳輸數(shù)據(jù)的新興技術(shù)。混合蜂窩與端到端異構(gòu)網(wǎng)絡(luò)不但有助于提高頻譜效率,而且為未來(lái)建立更廣泛互聯(lián)互通通信網(wǎng)絡(luò)提供了基礎(chǔ)。同步是一個(gè)通信網(wǎng)絡(luò)能夠?qū)崿F(xiàn)通信的基礎(chǔ),本論文圍繞基于LTE網(wǎng)絡(luò)的D2D技術(shù)展開(kāi),目的在于對(duì)混合蜂窩與端到端異構(gòu)網(wǎng)絡(luò)中的同步方案進(jìn)行研究,設(shè)計(jì)并實(shí)現(xiàn)一種可行的可用于工程實(shí)踐的同步方案。 首先,本文對(duì)混合蜂窩與端到端異構(gòu)網(wǎng)絡(luò)進(jìn)行了詳細(xì)分析。分析了該異構(gòu)網(wǎng)絡(luò)中的同步源種類以及各同步源特性,進(jìn)而介紹了各同步源對(duì)應(yīng)的Cell同步、Sync同步、和Cel1UE同步技術(shù)。之后對(duì)異構(gòu)網(wǎng)絡(luò)中可能存在的各種通信同步場(chǎng)景進(jìn)行了詳細(xì)分析,分析了雙終端在不同覆蓋情況下的各種通信場(chǎng)景及其之間的場(chǎng)景切換情況,以此為基礎(chǔ)探討了三終端場(chǎng)景和更復(fù)雜的多終端場(chǎng)景。 隨后,本文對(duì)該異構(gòu)網(wǎng)絡(luò)同步方案進(jìn)行了設(shè)計(jì)。通過(guò)對(duì)通信場(chǎng)景的分析,可知該異構(gòu)網(wǎng)絡(luò)通信場(chǎng)景復(fù)雜多變,因此本文選擇了設(shè)計(jì)模式中的狀態(tài)模式作為同步方案為該異構(gòu)網(wǎng)絡(luò)設(shè)計(jì)出了一種可行的同步狀態(tài)機(jī)。本文提出的同步狀態(tài)機(jī)方案將系統(tǒng)的同步狀態(tài)機(jī)設(shè)計(jì)分為上行子狀態(tài)機(jī)和下行子狀態(tài)機(jī)兩部分,并對(duì)各子狀態(tài)機(jī)進(jìn)行了靜態(tài)設(shè)計(jì)和動(dòng)態(tài)轉(zhuǎn)移設(shè)計(jì)。 最后,本文所設(shè)計(jì)的同步方案進(jìn)行了工程實(shí)現(xiàn)�；诙嗑�程技術(shù),依托于《LTE系統(tǒng)下設(shè)備直通技術(shù)》課題所搭建的通信系統(tǒng)平臺(tái),本文實(shí)現(xiàn)了所設(shè)計(jì)的同步方案,并通過(guò)實(shí)際業(yè)務(wù)驗(yàn)證了所設(shè)計(jì)的同步方案能夠滿足該異構(gòu)網(wǎng)絡(luò)中復(fù)雜的同步功能需求。
[Abstract]:The device has direct access to device to Device. D2D) technology is a new technology to establish direct communication links between mobile terminals to transmit data. Hybrid cellular and end-to-end heterogeneous networks can not only improve the spectral efficiency. Synchronization is the basis on which a communication network can realize communication. This paper focuses on D2D technology based on LTE network. The aim of this paper is to study the synchronization scheme between hybrid cellular and end-to-end heterogeneous networks and to design and implement a feasible synchronization scheme for engineering practice. First of all, this paper analyzes the hybrid cellular and end-to-end heterogeneous networks in detail, analyzes the types of synchronization sources and the characteristics of each synchronization source in the heterogeneous network, and then introduces the Cell synchronization corresponding to each synchronization source. Sync synchronization, and Cel1UE synchronization technology. After the heterogeneous network may exist in a variety of communication synchronization scenarios are analyzed in detail. Based on the analysis of different communication scenarios and scene switching between two terminals under different coverage conditions, three terminal scenarios and more complex multi-terminal scenarios are discussed. Then, this paper designs the heterogeneous network synchronization scheme. Through the analysis of the communication scene, we know that the heterogeneous network communication scene is complex and changeable. Therefore, this paper chooses the state mode in the design pattern as the synchronization scheme and designs a feasible synchronous state machine for the heterogeneous network. The proposed synchronous state machine scheme divides the design of the synchronization state machine of the system into two parts. Row substate machine and downlink sub-state machine two parts. The static design and dynamic transfer design of each sub-state machine are carried out. Finally, the synchronization scheme designed in this paper is implemented in engineering. Based on multi-thread technology, the communication system platform based on "equipment through Technology under LTE system" is built. In this paper, the designed synchronization scheme is implemented, and it is verified that the proposed synchronization scheme can meet the needs of the complex synchronization function in the heterogeneous network.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN929.5

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本文編號(hào)：1398660