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摘要:近年來(lái)，802.11協(xié)議下的無(wú)線網(wǎng)絡(luò)成為了社會(huì)的最新熱議話題，它已經(jīng)慢慢的走進(jìn)人們的生產(chǎn)、生活之中。人們通過(guò)無(wú)線網(wǎng)絡(luò)可以隨時(shí)隨地的進(jìn)行網(wǎng)上瀏覽查閱資料，與好友聊天交流，也可以通過(guò)無(wú)線網(wǎng)絡(luò)進(jìn)行辦公等等。隨著無(wú)線網(wǎng)絡(luò)的一路走紅，WIFI這個(gè)新名詞，也在慢慢地被人們所熟知。人們通過(guò)移動(dòng)終端連接無(wú)線接入點(diǎn)AP來(lái)進(jìn)行數(shù)據(jù)、語(yǔ)音的傳輸。本文主要是移動(dòng)終端在移動(dòng)中，對(duì)節(jié)點(diǎn)切換過(guò)程進(jìn)行了研究，提出了一種節(jié)點(diǎn)間切換的算法。詳細(xì)分析了移動(dòng)節(jié)點(diǎn)在切換中經(jīng)過(guò)的切換檢測(cè)、掃描、認(rèn)證和重連接過(guò)程。對(duì)節(jié)點(diǎn)切換檢測(cè)、信道的掃描、移動(dòng)終端與節(jié)點(diǎn)之間的認(rèn)證和重新連接到新的AP上這四個(gè)過(guò)程，進(jìn)行了詳細(xì)的切換性能分析與研究。結(jié)合無(wú)線網(wǎng)絡(luò)實(shí)驗(yàn)平臺(tái)結(jié)構(gòu)，分析設(shè)計(jì)了本文切換算法所需的網(wǎng)絡(luò)平臺(tái)。 在Eclipse開(kāi)發(fā)環(huán)境下編寫(xiě)算法程序，對(duì)算法界面布局和運(yùn)行流程做了較為詳細(xì)的分析。在網(wǎng)絡(luò)平臺(tái)的基礎(chǔ)上，結(jié)合Android手機(jī)移動(dòng)終端和UNIFI Controller管理軟件采集的數(shù)據(jù)分析，算法基本能滿足設(shè)計(jì)要求，能夠?qū)崿F(xiàn)節(jié)點(diǎn)間的切換。 關(guān)鍵詞 802.11協(xié)議；WIFI；切換
Abstract:In recent years, wireless network 802.11 under the agreement becomes the new hot social topic, it has been slowly into people's production, life. People can through the wireless network whenever and wherever possible to browse the Internet access to information, chat with friends, can also be carried out through the wireless network, office etc.. With a wireless network popularity, the WIFI of the new term, are slowly being known. People through the transmission of mobile terminal connected to a wireless access point AP for data, voice. This paper is a mobile terminal in a mobile, the node switching process were studied, proposed a node switching algorithm. A detailed analysis of the change detection, scanning, and mobile node authentication in handover after reconnection process. Between the node switching detection, channel scanning, mobile terminal and the node authentication and reconnect to the new AP these four processes, are analyzed and studied in detail the switching performance. Combined with wireless network experiment platform structure, analysis and design of the switching algorithm required network platform. Algorithm program in Eclipse development environment, to do a detailed analysis of the algorithm interface layout and operation process. Based on the network platform, combined with the analysis of Android mobile phone mobile terminal and UNIFI Controller management software of data collection, the algorithm can meet the design requirements, can realize the switching nodes. Keywords 802.11 protocol WIFI switching |
