Abstract
Vehicular communications have been subject to a great development in recent years, with multiple applications, such as electronic payments, improving the convenience and comfort of drivers. Its communication network is supported by dedicated short range communications (DSRC), a system composed of onboard units (OBU) and roadside units (RSU). A recently conceived different set-up for the tolling infrastructures consists of placing them in highway access roads, allowing a number of benefits over common gateway infrastructures, divided into several lanes and using complex systems. This paper presents an antenna array whose characteristics are according to the DSRC standards. Additionally, the array holds an innovative radiation pattern adjusted to the new approach requirements, with an almost uniform wide beamwidth along the road width, negligible side lobes, and operating in a significant bandwidth.
Highlights
The evolution of wireless communications has been reflected in several areas, including transport networks, wherein the development of vehicular communications has become evident in recent years, offering several functionalities to the drivers and other travelers, allowing the improvement of important safety issues, reducing traffic jams, or even accidents
Vehicular communications a topic with great attentionand anddevelopment, development, and Vehicular communications is aistopic with great attention andititisisexpected expected that that in the future vehicles will interact with each other, and with their surrounding environment in the future vehicles will interact with each other, and with their surrounding environment through through road infrastructures, serving as sensors on the road, collecting and sharing data
Dedicated short range communications (DSRC) is a technology technology used to implement this vehicular network with multiple applications (such as electronic used to implement this vehicular network with multiple applications payments) that has increasing use due to its convenience to all stakeholders
Summary
The evolution of wireless communications has been reflected in several areas, including transport networks, wherein the development of vehicular communications has become evident in recent years, offering several functionalities to the drivers and other travelers, allowing the improvement of important safety issues, reducing traffic jams, or even accidents. The electronic toll collection applied to highways is usually made based on input and output road logs, or using several gateways along the highway. These structures cover various lanes and allow quick access and the fluency of traffic. They involve at least one system covering each lane, and require great care to overcome potential interferences between the various RSU’s, or with the vehicles passing in adjacent lanes
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