無線網(wǎng)絡(luò)優(yōu)化論文



40頁 2.3萬字





中文摘要

移動通信發(fā)展到今天可謂是日新月異,變幻莫測｡人們對無線通信的需求與日俱增,因而無線網(wǎng)絡(luò)優(yōu)化的重要性就不言而喻｡本文主要是介紹了無線網(wǎng)絡(luò)優(yōu)化過程中所遇到的問題和優(yōu)化方法.為了方便大家的理解,本文還介紹了無線傳播的一些理論知識.鑒于目前GSM系統(tǒng)在社會上的廣泛流行和運用,本文的無線網(wǎng)絡(luò)優(yōu)化大多是對GSM系統(tǒng)而言｡ 考慮到移動通信運營商對利潤的追求,在網(wǎng)優(yōu)的過程中始終要考慮到成本問題,即盡量合理配置資源｡網(wǎng)絡(luò)優(yōu)化要從宏觀布站入手,要分析市場需求,人文環(huán)境,地理位置,自然環(huán)境等等,做到合理的布局,充分利用資源,盡量避免造成資源浪費｡GSM系統(tǒng)的優(yōu)化指通過各種技術(shù)手段和措施,解決系統(tǒng)運行過程中存在的各種問題,使系統(tǒng)始終處于較好的運行狀態(tài)｡針對網(wǎng)絡(luò)中存在的問題,調(diào)整不同類型的參數(shù)設(shè)置,包括:無線小區(qū)設(shè)計參數(shù),硬件參數(shù)設(shè)計和調(diào)整,軟件參數(shù)設(shè)計和調(diào)整等｡無線網(wǎng)絡(luò)優(yōu)化主要是通過調(diào)整個中相關(guān)的無線網(wǎng)絡(luò)工程設(shè)計參數(shù)和無線資源參數(shù),滿足系統(tǒng)現(xiàn)階段對各種無線網(wǎng)絡(luò)指標(biāo)的要求｡優(yōu)化調(diào)整過程往往是一個周期性的過程,因為系統(tǒng)對無線網(wǎng)絡(luò)的要求總在不斷變化｡GSM通信系統(tǒng)的特性,如移動性､隨機性､不可知性等,決定其本身是一個復(fù)雜的大系統(tǒng),從大系統(tǒng)的角度來看,對無線網(wǎng)絡(luò)優(yōu)化最終只能提供一組滿意解,而不是最優(yōu)解｡所以,對GSM網(wǎng)絡(luò)優(yōu)化的意義在于GSM網(wǎng)絡(luò)處于較好的運行狀態(tài),而對于優(yōu)化結(jié)果的評價是通過一系列網(wǎng)絡(luò)服務(wù)指標(biāo)來反映的:如覆蓋率,掉話率,切換成功率,話務(wù)均衡等等｡



關(guān)鍵詞：網(wǎng)絡(luò)優(yōu)化，通信質(zhì)量指標(biāo)，基站，問題，方法與流程







THE WIRELESS NETWORK OPTIMIZING





Abstract

The wireless communication changes with each passing day .For people ,the requirement for wireless communication is growing day by day ,so the wireless network optimizing becomes more and more important. In the text ,I will introduce the method of optimizing .First ,I will talk of some theory about how electromagnetic wave transmits . It is the increasing demand for wireless communications, and thus optimize the wireless network on the importance of self-evident. This is the process of introducing wireless network optimization problems and optimization methods. To facilitate our understanding, this article also introduced a number of wireless communication theoretical knowledge. At present ,GSM system is more popular ,so I will talk more about GSM not CDMA. As we all know, all people pursue the profits ,so how to reduce the cost of communication is very important .We must collocate the resource with reason .In optimizing ,we must know about the market ,the people ,the location ,the circumstance and environment ,and so on .We must make full use of resource not be waste of it .The optimizing of GSM means how to resolve the problem in the running by all sorts of method .For example ,the parameter for wireless cell ,the parameter for hardware ,the parameter for software and so on. The course of optimizing and adjusting is periodicity ,for the system of wireless network changes all the time . Optimize the adjustment process is often a cyclical process, because of the wireless network system requirements are constantly changing. GSM communications system characteristics, such as mobility, random nature, the unknown nature, determine their own is a complex systems .GSM system is large and complex ,for is motive and randomicity ,so what we pursue is the better not the best. How to judge the GSM system is good or bad? There are some guide line for us .The are call setup_success _rate, drop_callhandover_success_rate



Key words: The Wireless Network, Optimize, Bit,Method, Flow







目錄



第一章緒論 1

1.1引言 1

1.2研究背景 1

1.3研究內(nèi)容 1

1.3.1網(wǎng)絡(luò)普查 1

1.3.2數(shù)據(jù)采集 2

1.3.3數(shù)據(jù)分析 2

1.3.4制定和實施優(yōu)化方案 2

第二章移動無線環(huán)境的傳播特性 4

2.1基本天線單元 4

2.1.1天線的主要特性 4

2.1.2常用天線 5

2.1.3天線間的互偶 6

2.1.4設(shè)計和選擇天線時需要考慮的參數(shù) 7

2.2移動信道中電波的傳輸 7

2.2.1傳輸路徑損耗 8

2.2.2植被引起的損耗 9

2.2.3大氣層引起的損耗 10

2.2.4繞射和菲涅爾區(qū) 10

2.2.5多徑 10

2.2.6時延擴散 11

2.2.7瑞利衰落 11

2.2.8多普勒頻移 12

2.2.9室內(nèi)環(huán)境中的傳輸 12

2.2.10密集市區(qū)環(huán)境中的傳播 13

2.3干擾和噪聲 13

2.3.1噪聲 13

2.3.2干擾 14

第三章數(shù)據(jù)采集和分析 15

3.1 數(shù)據(jù)采集 15

3.1.1基站站點參數(shù)表 15

3.1.2 OMC-R統(tǒng)計數(shù)據(jù) 15

3.1.3路測記錄數(shù)據(jù) 15

3.1.4定點CQT測試和用戶投訴信息數(shù)據(jù) 16

3.2優(yōu)化過程與網(wǎng)絡(luò)存在問題的定位分析 16

第四章無線網(wǎng)絡(luò)優(yōu)化方案 19

4.1蜂窩系統(tǒng) 19

4.1.1六邊形小區(qū) 19

4.1.2蜂窩小區(qū)類型 19

4.2對移動通信市場的分析 21

4.3優(yōu)化調(diào)整 22

4.3.1站址選擇與優(yōu)化 23

4.3.2頻率規(guī)劃 25

4.3.3基站硬件的優(yōu)化 27

4.3.4　軟件參數(shù)的優(yōu)化 28

第五章優(yōu)化效果評估 31

5.1覆蓋問題的解決 31

5.1.1欠覆蓋與過覆蓋 31

5.1.2室內(nèi)與室外 31

5.2話務(wù)均衡問題 32
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