21 | Automotive-telecoms consortium claims successful completion of intelligent transportation project (簡訳:自動車通信コンソーシアムがインテリジェント交通プロジェクトの成功を主張) | ----------- | |
ComputerWeekly.com | 2020-07-10 21:20 | ????0? | |
ConVeX investigated the reliability, range and performance of C-V2X direct communication using 5.9GHz between vehicles and with infrastructure at varying speeds. Tests were also conducted in urban conditions with completely “blind” intersections and showed at least 140m range with safety messages delivered at 100% reliability for the V2V communication, which, said the consortium, underlines the high effectiveness of C-V2X direct communication over multiple use cases, for example intersection movement assist, left-turn assist and forward collision warning.The test was conducted with relative vehicle speeds of up to 430km/h between two vehicles traveling in opposite directions. The tests were conducted at two locations on the German A9 and A6 motorways. In parallel to real-world tests, extensive simulations were conducted by the Technical University of Kaiserslautern to corroborate the very good field performance of C-V2X. V2N testing used an Ericsson network supporting 5G concepts such as network slicing and geo-casting for use cases such as hazardous icy road alert. Thanks to the characteristics of 5G cellular networks, traffic information is consistently delivered with low latency and high reliability over arbitrarily long ranges that are determined by the application needs, rather than by communication capabilities.Among the detailed project results revealed from the trial, the consortium said it discovered that testing delivered 100% reliable reception of safety messages in line-of-sight conditions of up to 1.2km, with the distance limited by the length of the test roads. ConVeX also said the trial demonstrated the reliability, range and performance of the communication technology with the world’s first cross-border demonstration for C-V2X direct communication between vehicles and with infrastructure across the three trans-European borders, which included France, Luxembourg and Germany.Jens Kötz, head of electrics, electronics networking and energy systems at Audi, said the project has enabled a true test of the technology under challenging real-world conditions. “We have already connected the Audi fleet with traffic lights in cities and now we look ahead as C-V2X will dramatically boost road safety and efficiency in our cities,” he added. -- ???????? | |||
????????????????????????????? ??????????????????????? |
????????????