MAC/PHY Cross-Layer Design for Improved Vehicular Safety Messaging Reliability and Simulation Environment Design
نویسندگان
چکیده
منابع مشابه
Performance Evaluation of IEEE 802.11p MAC Protocol for VANETs
With an increased emphasis on transportation safety requirements, Vehicular Ad-hoc Networks (VANETs) have emerged as the key underlying technology in the realization of Intelligent Transportation Systems (ITS). The IEEE-1609 set of standards for Wireless Access for Vehicular Environment (WAVE) specifies an architecture that includes new standards for vehicular communication, aimed at supporting...
متن کاملA position-based routing module for simulation of VANETs in ns-3
Geonetworking and the corresponding routing protocols play an important role in application of Vehicular Ad-hoc Networks (VANETs). This paper presents the architecture and implementation of CLWPR (Cross-Layer, Weighted, Position-based Routing), a position-based routing protocol optimized for VANETs in NS-3 simulation environment. It utilizes mobility information from nodes and cross-layer infor...
متن کاملPHY-MAC dialogue with Multi-Packet Reception
Cross-layer design has been considered recently as a new approach when designing MAC protocols in systems with diversity such as CDMA. This paper goes one step further in the cross layer design by proposing a PHY-MAC dialogue involving the exchange of parameters such as BER and active users. By means of this PHY-MAC dialogue, system performance can be improved. A two-stage receiver is used at P...
متن کاملJoint Phy-mac Design for Opportunistic Spectrum Access with Multi-channel Sensing
This paper addresses the design of opportunistic spectrum access (OSA) where secondary users are allowed to sense and access multiple channels in the spectrum without causing unacceptable interference to primary users. Integrated in OSA design are a spectrum sensor at the physical (PHY) layer and a sensing and an access strategy at the MAC layer. Within the framework of partially observable Mar...
متن کاملA MAC and PHY Cross-Layer Analytical Model for the Goodput and Delay of IEEE 802.11a Networks Operating Under Basic Access and RTS/CTS DCF Schemes
We have developed a theoretical cross-layer model that allows assessing the goodput and delay of IEEE 802.11 local area networks (WLANs) operating simultaneously under the distributed coordination function (DCF) basic access (BA) and request-to-send/clear-to-send (RTS/CTS) medium access control (MAC) protocols under saturated traffic over correlated fading channels. A comparison between numer...
متن کامل