English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49378/84106 (59%)
造訪人次 : 7369788      線上人數 : 59
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/95828


    題名: 一個跨越GRPS與無線區域網路的無隙縫網路選擇系統之研究與實作 Design and Implementation of a Seamless Network Selection System across GPRS and WLANs
    作者: 石貴平;張志勇;周建閔;張恩譯
    貢獻者: 淡江大學資訊工程學系
    關鍵詞: 無線區域網路;無隙縫通訊;移動通訊;WLAN;Seamless communiction;Mobile communication;GPRS
    日期: 2005-10
    上傳時間: 2014-02-13
    摘要: 無線通訊的時代已經來臨,使用者除了可免於網路線所造成的限制之外,也享有 更高的機動性。現今存在著各式各樣的無線技術,有IEEE 802.11 WLAN,GPRS 和Bluetooth等技術,但是任單一技術皆存著某些限制,例如在都會中,因IEEE 802.11 WLAN存取點的建置不足,因此並不是所有的地方皆可使用WLAN 所提供的 服務;GPRS服務隨著近年來行動電話的蓬勃發展而涵蓋範圍廣闊,但GPRS服務的 速率較慢與費用較高,也造成使用上的限制。因此整合異質性網路的需求因此因 應而生。近年來整合WLAN和GPRS被廣泛的討論,然而大多數研究對於Handoffs的 討論是以網際網路通訊協定(IP Protocol)為主。於先前研究的假設中,Mobile node可同時對WLAN和GPRS建立連線,因此先前的研究探討於此二種介面中作切換 ,Mobile Node透過Home Agent的協助,達到Handoffs不遺失任何封包為目的。 但Mobile Node同時建立WLAN和GPRS連線,所造成的電源消耗(Power consumption)和連線成本(cost)皆未列入討論。因此在本篇文章裡,我們提出一 個不同的異質型無線網路轉接模型。其中探討了為解決電源的消耗,所以只建立 一個連線且如何依每個介面的特性選擇最佳的連線,和在只有一個連線下所產生 的其它延伸問題及可能的解決方案。最後,我們在微軟公司Windows XP上,實作 並驗證其功能。
    The era of wireless communications is coming. Users can not only get rid of the wire, but also can communicate on mobility. There are several wireless technologies, such as IEEE 802.11 WLAN, GPRS, and Bluetooth. However, any one technology among them has some drawbacks. For example, IEEE 802.11 has been deployed in our city. However, the number of hotspots is still not enough. GPRS is a well-deployed wireless communication technology. Nevertheless, GRPS has the lower transmission rate than IEEE 802.11. Besides, a payment is needed when using GRPS. For the above reasons, integrating the advantages of the heterogeneous services is an urgent demand. Since the handoff problem between WLAN and GPRS on network layer has been already widely discussed in the literatures. Most discussions focus on the IP protocol. This kind of discussions tried to let mobile nodes connect to WLAN and GRPR at the same time. Their purposes in handling the handoff problem between GRPS and WLAN are to avoid the loss of packets. However, it consumes much power and users need to pay for the GPRS connection if WLAN and GRPS are connected at the same time. Therefore, in this paper, a Heterogeneous Wireless Network Control (HWNC) is proposed for networks selection between GPRS and WLANs. The status of the HWNC will be observed and collected during the connection. We will then determine when the WLAN or GPRS is actively connected according to the final status of HWNC mentioned above. Experiments by controlling WLAN device and GPRS device on Microsoft Window XP directly are performed as well.
    關聯: 台灣網際網路研討會論文摘要集:無線行動,無限學習:M化台灣,6頁
    顯示於類別:[資訊工程學系暨研究所] 會議論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    一個跨越GRPS與無線區域網路的無隙縫網路選擇系統之研究與實作_中文摘要.docx摘要20KbMicrosoft Word91檢視/開啟
    一個跨越GRPS與無線區域網路的無隙縫網路選擇系統之研究與實作_英文摘要.docx摘要20KbMicrosoft Word73檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋