Building up an Ad Hoc Near Field Informatics Network for Traffic Applications
Date Issued
2013
Date
2013
Author(s)
張堂賢
Abstract
近年車載資通訊（Telematics）迅速發展，先進國家不斷引入先進電子、通信、資訊與 感測等資通訊技術（ICT）到智慧型交通系統（ITS），進一步整合人、車、路所取得的即 時資訊，對交通狀況作即時的策略及管理，目標包括促進交通安全、減少擁擠、提高機動 性、增進經濟生產力、減少環境衝擊、提昇能源使用效率及帶動相關產業發展。 車載資通訊應用無線通訊網路技術的進步，可讓駕駛能夠提前感知到更多過去所不能 立即得到的信息，例如前方路段有車禍發生或是災害發生等。這個架構建立在車輛能夠與 路側設施互相溝通(Vehicle to Roadside/Infrastructure communication, V2R=V2I)且車與車也 能相互傳送信息(Vehicle to Vehicle communication, V2V)。因而形成車用隨意網路(Vehicle Ad-hoc NETwork, VANET)的研究議題。 本次研究將基於前期開發 N-Fi 成果，透過無線通訊裝置及車載資通訊技術，(1)構建一 個多重節點訊息轉傳(multi-hop)的車用隨意網路系統，此同時車輛節點亦將成為行動隨意 網路(Mobile Ad hoc NETwork, MANET)的行動節點。由於VANET 其節點具有動態變化之 移動性，在這個特性限制下，關鍵的網路模型路由協定(routing protocol)變成為VANET 系 統發展的重點。(2)其次在目前的車載資通訊的發展當中，資料傳輸之安全性普遍未受到重 視。不論是V2V 或是V2I，都在無線的環境中進行訊息交換，其傳輸封包是完全曝露且不 受保護的，容易透過監測工具軟體去竊聽環境中傳輸封包進行攔截，甚至採取竄改、偽裝、 重送等攻擊，以干擾或破壞整個車載資通訊系統的運作。(3)另外在系統智慧化方面，將引 以N-Fi 系統為基礎，結合V2V 和V2I 的概念，發展出一套因應車輛在行動隨意網路之下 的行動定位與追蹤平台，以確保資訊能準確且安全的傳達給用路人。
In recent years, “Telematics＂ becomes a hot study topic in the world. It applies advanced electronic, communication, sensing technologies (ICT) for ITS implementation. “Telematics＂ integrates the information of people, vehicles and road devices to provide more real-time, reliable management strategy for improving traffic safety, reducing congestion, enhancing economic productivity, deducting environmental impact, raising energy efficiency…etc. Telematics can make drivers knowing more informatics which were not gotten in past traffic systems; for example, an accident or suffer just occurs at forwarding road section. This architecture is built up by means of vehicle to roadside/ infrastructure communication (called as V2R=V2I) and vehicle to vehicle communication (called as V2V). Due to the variation of vehicle’s relative position from time to time, vehicle ad-hoc network (VANET) becomes a hot issue in the ITS domain. This study aims at V2V and V2I development on the contribution of the last project, near field informatics (N-Fi). The most important issues to be solved are: (1) How to build up a multi-hop relationship for message transfer in an ad-hoc network, where works in both VANET and MANET. The light point is corresponding to building a routing protocol. (2) What method for cryptography makes a transferring message safe in the wireless V2V and V2I system. (3) In addition, how to position and track a vehicle in an ad-hoc network. All the issues will be deeply studied and really practiced through the N-Fi field trials.
Subjects
智慧運輸系統
車載資通訊
車間通訊
車路通訊
隨意網路
Intelligent Transportation Systems (ITS)
Telematics
Vehicle to Vehicle Communication (V2V)
Vehicle to Infrastructure Communication (V2I)
Ad-Hoc Networking
Description
國科會計畫編號:NSC101-2221-E002-155-MY2
Type
report