臺灣博碩士論文加值系統

新一代的電腦網路應用,亦即多媒體通訊應用已逐漸地萌芽.在今日電腦網
路所選用的環境極大部份為乙太網路 (Ethernet). 乙太網路是一種區域
網路(LAN), 是一種採用數位訊號傳輸方式且具有 CSMA/CD規範的網路.由
於乙太網路最初規化為資料傳輸, 所以無法滿足現今不同多媒體通訊的服
務需求.在本論文中, 以不改變乙太網路架構 (CSMA/CD) 為基礎 ,僅將傳
統乙太網路架構加以修正,取代原有貯列系統 (First-Come-First
-Serve) 傳送方式,以傳送及時性訊息為優先的模式整合不同媒體在網路
上之傳輸. 此修正模式,藉著採用 Event-Driven 模擬程式來模擬. 結果
顯示 , 對多媒體通訊在乙太網路上之應用,本方法無論在延遲性
(Delay) 或資料所能傳輸的量 (Throughput) 上,都比傳統的方式有較佳
的效果.

New computer network applications, called multimedia plications,
are evolving recently.In nowadays,the commonironment on which
the multimedia applications are tried to runthe Ethernet.
Ethernet is a baseband local area network(LAN),h uses digital
signaling and carrier sense multiples/collision detection(CSMA/
CD) scheme. Because of thatet can't satisfy the different
multimedia communication requirements such that a new modified
CSMA/CD protocol isroposed for an integrated voice/data
applications in thissis. Instead of trasmitting the queued
packet byt-Come-First-Serve (FCFS) discipline in the
conventionalnet model, the packets in queue are sent by real-
time packet first in the proposed modified model. The modified
modelas been simulated by event-driven simulation program and
showsetter performance both in delay and throughput
considerationthe conventional Ethernet.