【摘要】：隨著電信運(yùn)營商的重組和4G牌照的發(fā)放,傳統(tǒng)移動通信已向大數(shù)據(jù)業(yè)務(wù)進(jìn)行轉(zhuǎn)變。電信運(yùn)營商紛紛轉(zhuǎn)變戰(zhàn)略方向,將自身定位由移動通信專家角色向移動信息專家進(jìn)行轉(zhuǎn)變。未來通信發(fā)展趨勢為大數(shù)據(jù)、大流量、高帶寬的數(shù)據(jù)業(yè)務(wù)占主導(dǎo)地位。由于傳統(tǒng)移動通信的制約、資費(fèi)套餐制約,各大運(yùn)營商紛紛加大WLAN網(wǎng)絡(luò)的布建和運(yùn)營。利用WLAN的移動性、高速率、IP化組網(wǎng)結(jié)構(gòu)等特點來彌補(bǔ)數(shù)據(jù)業(yè)務(wù)的不足。WLAN可做為運(yùn)營商拓展寬帶接入市場的切入點,最終實現(xiàn)全業(yè)務(wù)運(yùn)營。隨WLAN網(wǎng)絡(luò)的大量建設(shè)及商用,網(wǎng)絡(luò)用戶數(shù)量大規(guī)模增長。但由于WLAN自身特點所局限,在實際使用中WLAN在特定情況下的缺點逐漸暴露出來:1、用戶側(cè)信號強(qiáng)度不穩(wěn)定2、用戶使用中信號頻繁連接或頻繁中斷十分嚴(yán)重3、數(shù)據(jù)流量下載緩慢,時延較大4、用戶感知較差此類現(xiàn)象主要由于干擾及WLAN參數(shù)設(shè)置不合理造成。通過對WLAN協(xié)議和無線通信研究,結(jié)合目前運(yùn)營的WLAN網(wǎng)絡(luò)中存在的各種問題,確定同頻干擾和鄰頻干擾的發(fā)生機(jī)制和對網(wǎng)絡(luò)的影響。通過對各種干擾環(huán)境的系統(tǒng)重現(xiàn)、網(wǎng)絡(luò)環(huán)境摸擬、測試平臺搭建,實現(xiàn)了對同頻干擾和鄰頻干擾情況的量化分析。結(jié)合測試結(jié)果和各項網(wǎng)絡(luò)規(guī)范,總結(jié)出可以適用于一線無線網(wǎng)絡(luò)優(yōu)化和指標(biāo)調(diào)整的數(shù)據(jù)依據(jù)基礎(chǔ),為各無線場景制定量化的優(yōu)化標(biāo)準(zhǔn)。在理論及數(shù)據(jù)的支撐下,完成特定高校場景的網(wǎng)絡(luò)優(yōu)化工作,為其他場景網(wǎng)絡(luò)優(yōu)化提供參考支撐。
[Abstract]:With the reorganization of telecom operators and the issuance of 4G licenses, traditional mobile communications have been transformed to big data services. Telecom operators have changed their strategic direction from the role of mobile communication experts to mobile information experts. The future communication development trend is big data, large traffic, high bandwidth data service dominates. Due to the restriction of traditional mobile communication and the restriction of tariff package, the major operators increase the construction and operation of WLAN network one after another. Taking advantage of the mobility of WLAN and the high speed IP network structure to make up for the shortage of data service. WLANs can be used as the breakthrough point for operators to expand the broadband access market and finally realize the whole service operation. With the large number of WLAN network construction and commercial, the number of network users is growing. However, due to the limitation of WLAN's own characteristics, the disadvantages of WLAN in practical use are gradually exposed: 1, the signal intensity on the user side is unstable by 2, the frequent connection or frequent interruption of the signal in the user's use is very serious, and the download of data flow is slow. This phenomenon is mainly caused by interference and unreasonable setting of WLAN parameters. Through the research of WLAN protocol and wireless communication, combined with the problems existing in the current WLAN network, the mechanism of co-frequency interference and adjacent frequency interference and its influence on the network are determined. Through the reconstruction of various jamming environments, the simulation of network environment and the construction of test platform, the quantitative analysis of co-frequency interference and adjacent frequency interference is realized. Combined with the test results and the network specifications, the paper summarizes the data basis for the optimization and index adjustment of the wireless network, and sets up the quantitative optimization standards for each wireless scene. Under the support of theory and data, the network optimization work of the specific university scene is completed, which provides reference support for the network optimization of other scenarios.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN925.93

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