دانلود مقاله ISI انگلیسی شماره 70723
ترجمه فارسی عنوان مقاله

چندپخشی شناختی با کانال های پاره همپوشانی شده در شبکه های ad hoc وسایل نقلیه

عنوان انگلیسی
Cognitive multicast with partially overlapped channels in vehicular ad hoc networks
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
70723 2016 10 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Ad Hoc Networks, Volume 11, Issue 7, September 2013, Pages 2016–2025

ترجمه کلمات کلیدی
شبکه های ad hoc وسایل نقلیه؛ رادیو شناختی؛ تداخل کانال مجاور؛ برنامه نویسی شبکه
کلمات کلیدی انگلیسی
Vehicular ad hoc networks; Cognitive radio; Adjacent channel interference; Network coding
پیش نمایش مقاله
پیش نمایش مقاله  چندپخشی شناختی با کانال های پاره همپوشانی شده در شبکه های ad hoc وسایل نقلیه

چکیده انگلیسی

Vehicle to many vehicles (V2MV) multicast is an attractive application to provide vehicle safety and traffic control information, urban sensing and multimedia content sharing in vehicular ad hoc networks. Due to the limitation of DSRC channels, Wi-Fi channels can be alternative to realize the multicast in the vehicular networks. However, the deployment using the Wi-Fi in ISM bands is challenging due to the interference from increasing residential Wi-Fi users as well as inter-vehicle interference. In this study, we propose a cognitive multi-channel, multi-radio multicast protocol, CoCast, borrowing concept of recently developed cognitive radio techniques, which can help overcome such interference, with spectrum sensing and multi-channel assignment. Unfortunately, number of orthogonal channels is very limited in the ISM band to avoid interference in urban Wi-Fi cloud. Therefore, we apply two additional features to use partially overlapped channels: parallel frame transmission over OFDM subchannels to exploit spectral diversity, and network coding for the subchannel frames. Our evaluation results show that the reliability of multicast communication among vehicles in a dense urban environment can be significantly improved with these protocol extensions.