التفاصيل البيبلوغرافية
| العنوان: |
Scalable Map Information Dissemination for Connected and Automated Vehicle Systems |
| المساهمون: |
Gani, S M Osman (Author), Pourmohammadi Fallah, Yaser (Committee Chair), Vosoughi, Azadeh (Committee CoChair), Yuksel, Murat (Committee Member), Chatterjee, Mainak (Committee Member), Hasan, Samiul (Committee Member), University of Central Florida (Degree Grantor) |
| بيانات النشر: |
University of Central Florida |
| المجموعة: |
UCF Digital Collections (University of Central Florida) |
| مصطلحات موضوعية: |
Automated vehicles--channel congestion control--dedicated short range communications (DSRC)--situational awareness--vehicular ad hoc networks (VANETs)--capture effect--information dissemination rate--CSMA/CA wireless networks--V2X communication |
| الوصف: |
Situational awareness in connected and automated vehicle (CAV) systems becomes particularly challenging in the presence of non-line of sight objects and/or objects beyond the sensing range of local onboard sensors. Despite the fact that fully autonomous driving requires the use of multiple redundant sensor systems, primarily including camera, radar, and LiDAR, the non-line of sight object detection problem still persists due to the inherent limitations of those sensing techniques. To tackle this challenge, the inter-vehicle communication system is envisioned that allows vehicles to exchange self-status updates aiming to extend their effective field of view and thus compensate for the limitations of the vehicle tracking subsystem that relies substantially on onboard sensing devices. Tracking capability in such systems can be further improved through the cooperative sharing of locally created map data instead of transmitting only self-update messages containing core basic safety message (BSM) data. In the cooperative sharing of safety messages, it is imperative to have a scalable communication protocol to ensure optimal use of the communication channel. This dissertation contributes to the analysis of the scalability issue in vehicle-to-everything (V2X) communication and then addresses the range issue of situational awareness in CAV systems by proposing a content-adaptive V2X communication architecture. To that end, we first analyze the BSM scheduling protocol standardized in the SAE J2945/1 and present large-scale scalability results obtained from a high-fidelity simulation platform to demonstrate the protocol's efficacy to address the scalability issues in V2X communication. By employing a distributed opportunistic approach, the SAE J2945/1 congestion control algorithm keeps the overall offered channel load within an optimal operating range, while meeting the minimum tracking requirements set forth by upper-layer applications. This scheduling protocol allows event-triggered and vehicle-dynamics driven message ... |
| نوع الوثيقة: |
text |
| اللغة: |
English |
| Relation: |
CFE0007634; ucf:52470; http://purl.flvc.org/ucf/fd/CFE0007634 |
| الاتاحة: |
http://purl.flvc.org/ucf/fd/CFE0007634 |
| Rights: |
campus 2020-08-15 |
| رقم الانضمام: |
edsbas.17A3F4EF |
| قاعدة البيانات: |
BASE |