車用WiFi網路中的碰撞分析;Analysis of Collision Probability in Vehicular WiFi Networks

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/54423

Title:	車用WiFi網路中的碰撞分析;Analysis of Collision Probability in Vehicular WiFi Networks
Authors:	林正平;Lin,Cheng-ping
Contributors:	資訊工程研究所
Keywords:	車載網路;WiFi;ViFi;碰撞;轉傳;collision;relay;VANET;ViFi;WiFi
Date:	2012-07-21
Issue Date:	2012-09-11 18:50:26 (UTC+8)
Publisher:	國立中央大學
Abstract:	機率性轉傳的技術提昇了車用 WiFi 網路的效能，使得資料能夠在短暫且斷斷續續的通訊品質下順利地送達目的地。然而，過多的轉送卻增加了碰撞的發生，降低網路的傳輸效能。因此，分析車用 WiFi 網路中的碰撞機率，可以使轉送效率最大化，進而增進車用 WiFi 網路的連線品質。Opportunistic relay improves the performance of transmissions in vehicular WiFi networks, which make data transmitted more effectively in the fleeting and intermittent vehicular networks. However, too many relays may reduce the quality of connections due to the increasing collisions. In this thesis, we analyze the collisions in vehicular WiFi networks and compute the probability of collisions in the network by two different schemes. Besides, we derive the optimal relay probability for an existing relay algorithm to minimize the redundant retransmission with the consideration of collisions.
Appears in Collections:	[Graduate Institute of Computer Science and Information Engineering] Electronic Thesis & Dissertation

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