Mathematicians at The Peoples’ Friendship University of Russia (RUDN) are collaborating with scientists from Egypt to improve 5G cellular handoffs between vehicles and transmitters next to the road (C-V2X). The new protocol increases the reliability of the connection several times, according to results published in the Journal of Sensor and Actuator Networks, which is critical to the eventual mass deployment of autonomous vehicles.
“Vehicular 5G networks are a promising idea that will enable direct communication between vehicles and surrounding devices. However, the creation of such networks is associated with many problems due to the mobility of vehicles. One of these problems is the transmission of data at the intersection of coverage areas,” said Ammar Muthanna, Ph.D., Director of the Scientific Center for Modeling 5G Wireless Networks at RUDN University.
Mathematicians used mobile edge computing technology to bring cloud computing closer to end users, where cars communicate with each other, with traffic lights and other road infrastructure. The new protocol significantly reduces the probability of an unsuccessful handoff from 20 percent to two percent. The reliability of the network, in general, also increases.
“The developed scheme is based on the search for a threshold signal strength, below which reception will be difficult. The scheme achieved a 64 percent improvement in packet delivery ratio over the existing conventional scheme. In the future, the scheme needs to be optimized for intersections. To do this, we will add additional indicators, including the predicted direction of movement of the car,” said Muthanna.
New V2X Chips Revealed
In July, Autotalks unveiled chips for V2X that offer life-saving situational awareness alerts and V2X applications that use sensor data shared by other vehicles and enable critical actions.
“The new chipsets, developed over the past several years, are designed to support all upcoming V2X requirements in both dedicated short-range communications (DSRC) and C-V2X communication technologies, including the latest 5G-V2X (C-V2X Rel. 16/17/18) and IEEE 802.11bd (next generation DSRC),” the company said. “The products have already been awarded for series production of a passenger car by a major automotive OEM. First samples are expected to be available in early 2023, and the first cars equipped with the new chipsets are set to be available in 2025.”
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