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題 名 | Adaptation to Network Link Bandwidth Fluctuation in WWW=全球資訊網傳輸頻寬變化的調適 |
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作 者 | 張瑞雄; 郭玟達; | 書刊名 | 中國工程學刊 |
卷 期 | 21:1 1998.01[民87.01] |
頁 次 | 頁59-72 |
分類號 | 448.6 |
關鍵詞 | 超媒體傳輸協定; 網際網路; 調適性協定; Hypertext transfer protocol; Internet; Adaptive protocols; |
語 文 | 英文(English) |
中文摘要 | 網際網路使用者的快速成長使得網際網路的連線速度變得愈來愈慢,若需要很大頻寬的應用,如全球資訊網,在上面傳輸時,其延遲和回應時間往往難以忍受,有時使用者的螢幕會停止很久,全球資訊網變成全球等待。為了增進系統的回應速度.本論文提出一個傳碌頻寬感應的超媒體傳輸協定,此協定能視可用頻寬的多寡來決定要傳輸的資料,儘量讓資料傳輸看起來有意義且有回應。此通訊協定可以用於任何可用頻寬缺乏且不斷變化的情況,如在頻寬有限和善變的無線網路上,此協定可增加系統的回應速度和使用者的滿意度。在超媒體文件中,我們設計了一個新的註標讓使用者來標定文件內容的每部份重要的程度,同時我們也設計了一個簡單的方法來自動分解每份文件。對幾份超媒體文件在不同的頻寬下所做的實驗顯示出本方法的確可以讓全球資訊網的傳輸更加平順。 |
英文摘要 | The rapid growth in the number of Internet users makes Internet accessing speed increasingly slower. When applications that require a large amount of bandwidth, for example, the world wide web, are running through these snail-like connections, delays and response time are often intolerable. Sometimes, the user's screen is stuck for a long time. World wide web becomes world wide wait. To increase respon-siveness, a bandwidth sensitive hypertext transfer protocol is proposedin this paper. This protocol possesses the capability to match the amount and nature of the data transmitted with the amount of bandwidth available in the connection. That is, it tries to keep the communicationgoing meaningfully and responsively as far as the connection band-width allows. This protocol can be applied to any situation where theavailable bandwidth is often inadequate and constantly changing. Forexample, in wireless networks where the connection bandwidth is lim-ited and often variable, this protocol can be used to decrease responsetime and increase users' satisfaction. New tags are provided in the hypertext markup language for theuser to structure the document such that the protocol can identify theimportant and meaningful part to be transmitted during bandwidth scar-city. A method is also devised to structure the document automati-cally if the user does not. Experiments on several HTML documentsunder different bandwidth availability indicate that the modified pro-tocol indeed will make WWW transmission proceed more smoothlyand less sporadically. |
本系統中英文摘要資訊取自各篇刊載內容。