標題: WAVE車間無線通訊系統之移動管理研究
Mobility Management for Wireless Access in Vehicular Environments
作者: 林一平
LIN JASON YI-BING
國立交通大學資訊工程學系(所)
關鍵字: WAVE;移動管理;位置評估;WAVE;Mobility Management;Location Estimation
公開日期: 2011
摘要: 由於Wireless Access in Vehicular Environments (WAVE) 無線通訊協定的制定,無線通訊技術能實際的應用於交通環境之中,交通工具之間透過此一通訊協定相互進行無接縫式(seamless)的資料傳輸。在WAVE通訊協定中,資料可以透過WAVE Short Message Protocol (WSMP)進行傳輸,但是在規格書中,針對WSMP僅只提供廣播(broadcast)服務,對於點播(unicast)及群播(multicast)並沒有相對應的處理機制。欲處理WSMP之點播(unicast)及群播(multicast)資料傳遞服務,必需建立移動管理(mobility management)的機制,方能紀錄每一個使用者/交通工具之位置,以達成資料傳遞之目的。本計畫中,我們提出一套’以預測位置為基礎之移動管理機制’,此一機制將有效的利用全球定位系統(Global Positioning System; GPS)所提供之位置資訊,大量的降低維持移動管理機制所需之資料傳輸量。在車流量大且行駛速度快的快速道路/高速公路上,基於相同的呼叫成本(paging cost),我們所提出的’以預測位置為基礎之移動管理機制’可以大幅減少40%~90%的移動管理資料傳輸量。
The Wireless Access in Vehicular Environments (WAVE) provides seamless and interoperable services for vehicles. In WAVE, the WAVE Short Message Protocol (WSMP) provides broadcast services but does not define unicast/multicast services that require mobility management to track the locations of the vehicles. To resolve this issue, we will propose a prediction-based mobility management mechanism by utilizing positioning systems (e.g., GPS) for a WAVE system deployed in highway environment with a large volume of high-speed vehicles. Our study indicates that under the same paging cost, our approach can reduce 40%-90% of the network traffic as compared with the traditional cellular mobility management approach.
官方說明文件#: NSC100-2221-E009-070
URI: http://hdl.handle.net/11536/99697
https://www.grb.gov.tw/search/planDetail?id=2332013&docId=366263
Appears in Collections:Research Plans