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標題: | 一個新的網格繞徑協定用於車輛隨意網路 A New Grid-based Routing Protocol for Vehicular Ad-Hoc Networks |
作者: | Jian-Jia Huang 黃建嘉 |
指導教授: | 李秀惠 |
關鍵字: | 車輛隨意網路,服務品質,繞徑協定,稀疏網路, Vehicular Ad-Hoc Network(VANET),Quality of Service(QoS),Routing Protocol,Sparse network, |
出版年 : | 2009 |
學位: | 碩士 |
摘要: | Vehicular Ad Hoc Network (VANET) is a research field attracting growing attention. Some routing protocols for VANET focus on improvement of QoS, and some other routing protocols try to overcome the problems encountered in sparse networks. However, there are only few protocols which could consider both factors at the same time. This is because the QoS routing protocols are commonly used in dense networks, but not in sparse networks. Therefore, we propose a grid-based routing protocol which could provide a satisfying QoS in dense networks, and also could be applied in sparse networks.
In order to improve QoS, we choose the best route according to traffic flow in route selection process. In addition, we utilize carry-and-forward concept for disconnected VANET problems. Compared with GVGrid which is also grid-based, our protocol is connectionless, meaning that the probability of broken link is lower. Furthermore, our protocol can be used as source and destination are mobile nodes, and it provides a mechanism for sparse networks also. The experiment results show that our protocol offers greater packet delivery ratio than GVGrid and GPSR either in dense networks or in sparse networks, or as both of source and destination are mobile nodes. Despite the fact that our protocol has longer delay, this is a trade-off due to providing a more stable route. Nevertheless, because of the longer delay, our protocol may be suitable for delay-tolerant applications. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/26048 |
全文授權: | 未授權 |
顯示於系所單位: | 資訊工程學系 |
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