完整後設資料紀錄
DC 欄位語言
dc.contributor.author邱仲麟en_US
dc.contributor.authorChung-Lin Chiuen_US
dc.contributor.author王國禎en_US
dc.contributor.authorDr. Kuochen Wangen_US
dc.date.accessioned2014-12-12T02:30:26Z-
dc.date.available2014-12-12T02:30:26Z-
dc.date.issued2002en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#NT910394041en_US
dc.identifier.urihttp://hdl.handle.net/11536/70211-
dc.description.abstract於本論文中,我們評估在無線網路環境下一個新的媒體存取控制協定的效能表現。這個控制協定稱為是統計表徵媒體存取控制協定 (ST-MAC)。我們也為這個協定加了一個省電機制。從頻道的使用率來看,ST-MAC 使用了一個不均勻的隨機數產生器,使得在無線網路頻道的時槽競爭上呈現出一個普松分佈的狀態。ST-MAC 在較高的資料流量情況下,其表現是很穩定的。藉由一個簡單的省電機制的加入,ST-MAC能源使用效率增進了約60%至70%之間。CSMA/CA在無線區域網路上是一個很好的媒體存取控制協定,但是從ST-MAC的效能評估結果來看,在較低的競爭程度上(例如, ),ST-MAC 較 CSMA/CA提升了將近150%的頻道效能。這是由於統計表徵的特色使得系統下的每一個使用者知道該在什麼時間傳送它們的封包而避免因競爭頻道使用權而造成的碰撞現象。由於碰撞的次數與封包重新傳送的時間延遲都可以被減到最少,ST-MAC在長距離的通訊系統與車間通訊上是一個很適用的媒體存取控制協定。zh_TW
dc.description.abstractIn this thesis, we evaluate the performance of a novel MAC protocol for wireless networks. This protocol is called Statistic Token Medium Access Control (ST-MAC). We have enhanced the protocol with a power saving strategy. From a point view of channel utilization, ST-MAC uses a non-uniform distributed random number generator which performs a Poisson distribution on competing time slots of a wireless channel. ST-MAC is stable at an extreme end of high traffic load. By incorporating a simple power saving strategy, 60% to 70% of power efficiency improvement has been achieved. CSMA/CA is an emerging MAC protocol in wireless local area networks. Performance evaluation has shown that ST-MAC has 150% higher throughput than CSMA/CA under low contention degree ( ). This is due to the characteristic of statistic token that each station knows when to transmit a packet without encountering collision. ST-MAC is suited for long range communications and inter-vehicle communications, where the number of collisions and retransmission delay can both be minimized.en_US
dc.language.isozh_TWen_US
dc.subject媒體存取控制協定zh_TW
dc.subject普松分佈zh_TW
dc.subject省電策略zh_TW
dc.subject頻道利用率zh_TW
dc.subject頻道效能zh_TW
dc.subject統計表徵zh_TW
dc.subjectMAC protocolen_US
dc.subjectPoisson distributionen_US
dc.subjectpower saving strategyen_US
dc.subjectchannel utilizationen_US
dc.subjectthroughputen_US
dc.subjectstatistic tokenen_US
dc.title無線網路下新媒體存取控制協定zh_TW
dc.titlePerformance Evaluation of a Novel MAC Protocol in Wireless Networksen_US
dc.typeThesisen_US
dc.contributor.department資訊科學與工程研究所zh_TW
顯示於類別:畢業論文