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移動(dòng)通信系統(tǒng)中切換技術(shù)研究畢業(yè)設(shè)計(jì)論文-資料下載頁

2025-06-22 07:36本頁面
  

【正文】 通過本次畢業(yè)設(shè)計(jì)我發(fā)現(xiàn),只有充分的理解理論知識;才能夠?qū)旧系睦碚撝R與生產(chǎn)實(shí)際相整合,理論知識服務(wù)于社會(huì)生產(chǎn),以增強(qiáng)自己的實(shí)踐動(dòng)手能力。這個(gè)畢業(yè)設(shè)計(jì)為我積累了寶貴的經(jīng)驗(yàn)。通過本次畢業(yè)設(shè)計(jì),讓我明白了理論和實(shí)際的距離,也明白了把理論和實(shí)際進(jìn)行結(jié)合的重要性,也從中學(xué)得了很多書本上和課堂上無法得知的知識。我們在學(xué)習(xí)的過程中不要過度的依賴課本,應(yīng)該把理論和教學(xué)過程中的一些實(shí)際問題相聯(lián)系,還要把理論與實(shí)踐相結(jié)合,理論問題應(yīng)該就是我們生活中的實(shí)踐課題,解決問題即課程研究的過程,每個(gè)學(xué)生自己應(yīng)該堅(jiān)信自己就是一個(gè)專家,通過自己動(dòng)手來解決的問題比我們動(dòng)腦子解決問題更讓我們難以忘記。素質(zhì)教育就應(yīng)該采取理論與實(shí)踐結(jié)合的方式,理論的問題,也就是我們應(yīng)該解決的實(shí)踐性的課題。這種做法能夠幫助我們對理論知識的鞏固,又有助于培養(yǎng)我們的動(dòng)手能力。加強(qiáng)培養(yǎng)解決實(shí)際問題的能力,有助于我們以后踏入社會(huì)的工作。由于本次畢業(yè)論文涉及到了一些移動(dòng)通信和現(xiàn)場總線方面的知識,所以花費(fèi)的時(shí)間有點(diǎn)多,感謝指導(dǎo)老師為我解決了現(xiàn)場總線的一些問題,讓我少走了許多彎路,避免了時(shí)間的浪費(fèi)。但是由于本次畢業(yè)設(shè)計(jì)運(yùn)用了太多通信技術(shù)方面的知識,使我重新學(xué)習(xí)了一遍通信技術(shù),讓我明白了移動(dòng)通信技術(shù)的總要性,老師在移動(dòng)通信技術(shù)方面的造詣?lì)H深,讓我以后一定要好好學(xué)習(xí)移動(dòng)通信技術(shù)。在此,感謝所有在本次畢業(yè)設(shè)計(jì)過程中,為我提供幫助的那些人,沒有你們,我不能如此順利的完成畢業(yè)設(shè)計(jì),謝謝你們!附 錄通過對各種切換技術(shù)的介紹,我們可以看出:在測量過程中,軟切換和硬切換都是在不知道移動(dòng)臺準(zhǔn)確位置的情況下進(jìn)行切換的,因此需要對所有的鄰小區(qū)進(jìn)行測量,然后根據(jù)給定的切換算法和準(zhǔn)則進(jìn)行切換判斷和目標(biāo)小區(qū)的選擇。而接力切換是在知道移動(dòng)臺精確位置的情況下進(jìn)行切換測量,所以它沒有必要對所有相鄰小區(qū)進(jìn)行測量,只需對與移動(dòng)臺移動(dòng)方向一致的、靠近移動(dòng)臺一側(cè)少數(shù)幾個(gè)小區(qū)進(jìn)行測量,然后根據(jù)給定的切換算法和準(zhǔn)則進(jìn)行切換判斷和目標(biāo)小區(qū)的選擇,就可以實(shí)現(xiàn)高質(zhì)量的越區(qū)切換。接力切換具備較低掉話率和較小上行干擾的優(yōu)點(diǎn)之外,還具有軟切換資源利用率高、算法簡單、信令負(fù)荷輕的優(yōu)點(diǎn),更重要的是它大大提高了切換成功率和信道利用率。在實(shí)際工作中,可以通過權(quán)衡掉話、時(shí)延、信道忙閑等因素來確定采用哪種切換方式。未來移動(dòng)通信系統(tǒng)中切換技術(shù)與移動(dòng)性管理結(jié)合得越來越緊密,由于未來移動(dòng)通信系統(tǒng)的核心網(wǎng)為IP網(wǎng),這勢必會(huì)給移動(dòng)用戶的切換帶來新的問題和挑戰(zhàn)。現(xiàn)有的切換算法是針對峰窩移動(dòng)通信系統(tǒng)設(shè)計(jì),Internet協(xié)議開始并不是針對無線通信環(huán)境所設(shè)計(jì),要使得未來移動(dòng)通信系統(tǒng)中切換技術(shù)得以實(shí)現(xiàn),必須對現(xiàn)有的切換技術(shù)進(jìn)行修改。正在研究的切換技術(shù)基于信道借用和基于用戶位置的切換。3G通信技術(shù)已經(jīng)成熟,新的4G技術(shù)也在不斷的演變,要做到通信技術(shù)的完善和更快的發(fā)展,切換技術(shù)作為移動(dòng)通信中的關(guān)鍵技術(shù),起著重要的作用。因此,我們研究切換技術(shù)是為了更好的發(fā)展未來通信技術(shù),提高網(wǎng)絡(luò)的服務(wù)能力和運(yùn)行質(zhì)量,這些都是通信系統(tǒng)的基礎(chǔ),是當(dāng)前以及將來通信技術(shù)中的重點(diǎn)。AppendixThrough the introduction to various switching technology, we can see that: in the process of measurement, soft switching and hard switching is under the condition of don39。t know the accurate location of the mobile switching, so need to measure all the neighboring village, and then according to the rule of a given switching algorithm and switching judgment and the choice of target area. And relay switch is in the know the precise location of mobile station switching measurement, so it is not necessary to measure all the neighboring cells, only need to consistent with the direction of mobile station, close to the mobile station side a few area measurement, and then according to the rule of a given switching algorithm and switching judgment and the choice of target district, can achieve high quality handoff. Relay switch have dropped lower and the advantages of smaller uplink interference, also has a soft switching high resource utilization, simple algorithm, the advantages of light signaling load, more important is that it greatly improves the success rate and channel utilization. In actual work, can drop words, time delay, busy idle channel by weighing factors such as the way to determine what kind of switch used. Switching technology in the future mobile munication system and mobility management more and more closely, as the core of the future mobile munication system network IP network, this will inevitably brings to the mobile users to switch the new problems and challenges. Nest switching algorithm is targeted at peak of existing mobile munication system design, Interne t start agreement and is not designed for wireless munication environment, to make switching technology to achieve in future mobile munication system, existing switching techniques must be modified. Switching technology based on channel borrowing and switch based on user39。s location.3 g munication technology is mature, the new 4 g technology is also in constant evolution, to achieve the improvement of the munication technology and the development of faster, switching technology as the key technology of mobile munication, plays an important role. Therefore, we study switching technology is to better the future development of munication technology, improve the quality of network service capacity and running, all of these is the foundation of the munication system, is the key to the current and future munication technology.23
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