博文

目前显示的是 一月, 2021的博文

C-V2X Related Standard Continues to Evolve, Speeding up V2X Development in China

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By October 24, 2020, Cooperative Intelligent Transportation System Vehicular Communication Application Layer Phase II, the C-V2X group standard co-drafted by thirty one companies and organizations including Genvict, Huawei, China Mobile and Baidu, finished its solicitation of public opinion. The standard specifies 12 application scenarios and 9 interactive messages. Information service, efficiency, safety, traffic management and intelligent driving are the important scenarios defined in the standard. Day I services mainly focus on the V2V and V2X status sharing, while Day II services emphasize the interaction among vehicles, infrastructure and pedestrians, which reflects the trend towards building Intelligent Vehicle-Infrastructure Cooperative System (VICS). It is estimated that at least 1.4 million RSUs will be used in Day II services, with total investment exceeding 100 billion yuan. Genvict has long been aware of the significant impact of autonomous driving on intelligent traffi...

Genvict Joins C-V2X Cross-industry & Large-scale Pilot Plugfest, Accelerating the Pace of large-scale C-V2X Commercialization

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The 2020 C-V2X cross-industry & large-scale pilot plugfest was carried out on October 27-29. Compared with the last year's evevt which demonstrates the interoperability crossing chipsets, terminals, complete vehicles and safety platforms, the new plugfest of intelligent transport system set a higher standard for test participants, added requirements for high-precision map and positioning, and enhanced network security. Genvict participated the cross-industry pilot plugfest for the third consecutive year. In this year's plugfest, Genvict provides V2X terminal equipment compliant with both Qualcomm and Huawei solutions, and joins hands with nine automobile manufacturers including BAIC, Geely, JEEP, JAC, Changan Automobile, NextEV, Renault, Dongfeng Motor and Citroen to demonstrate the C-V2X interoperability test. Genvict also works with Didi to deploy the V2X roadside equipment in the demonstrated road sections, and the V2X highway traffic management system will continue ...

How 5G Enables V2X Communications?

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As one of the basic technologies of auto congestion charge , Vehicle-to-Everything (V2X) at present days are in its initial phase where only simple applications such as real-time navigation, access to infotainment system and emergency services can be deployed. The arrival of 5G era broadens our imagination towards autonomous driving, and the combination of 5G and V2X (referred to “5G C-V2X” or “C-V2X” hereafter) significantly extend the V2X application scenarios. One of the main goal of this intelligent traffic system is to improve road safety and traffic management. Latency in data transmission will lead to delay in action taken, which may then result in serious car crashes. Therefore, to ensure road safety, latency should be as short as possible. Compared with 4G, 5G network is much speedy in communication, and is capable of transmitting large-amount data from end-to-end within 1 millisecond. 5G C-V2X delivers large bandwidth, super-high reliability and ultra-low latency to enabl...

3GPP Releases: C-V2X Evolution at a Glance

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Cellular-V2X (C-V2X), encompassing LTE-V2X/LTE-eV2X that evolves from LTE mobile network and NR-V2X that smoothly evolves from 5G New Radio, is a 3GPP-based (3rd Generation Partnership Project) global vehicle wireless communication technology. Compared to DSRC-based V2X, C-V2X is a late starter. The concept of C-V2X first came out in 2013. It was not until 2015 that the intelligent transport system of C-V2X standardization was officially initiated. The functional freeze date of 3GPP Release 14 was in June 2017. Rel-14 work introduces LTE support for V2X services, especially support for V2V services based on LTE sidelink. The intelligent traffic system mostly targets to provide data transport service for basic road safety service. 3GPP Release 15, as the first full set of 5G standards, was completed in 2018. Rel-15 work enhances LTE-based V2X services and specifies 3GPP V2X Phase 2 to support advanced V2X services in a fully backward compatible manner with Rel-14 V2X. 3GPP Release...

Key Technologies Enabling Autonomous Driving

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Autonomous driving normally refers to self-driving vehicles or intelligent transport system that move without human intervention. Developing an autonomous vehicle involves three main elements: Perception, decision-making (some define it as planning) and action (some define it as control). The perception system, encompassing environment perception system and positioning estimation system, is basic as well as crucial to autonomous driving. Sensors are the key hardware of the perception system, serving as the eyes and ears of an autonomous vehicle (AV). There are mainly three types of sensors applied for autonomous driving, namely camera, radar, and LiDAR. Camera V.S. Radar V.S. LiDAR Topic Camera Radar LiDAR Resolution High Low Medium Weather resistance Medium High Low Object speed tracking Medium High Medium Object height tracking Medium Low High Object ranging Low High High Object distinguishing High Low High Cost Low Medium High C-V2X Communication: Enabling Non-Line-of-Sight Cove...

Future V2X Communication: DSRC-based V2X or C-V2X?

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Vehicle-to-Everything (V2X) is expected to play a significant role in automatic congestion charge. Currently, there are two radio technologies available for V2X communication: Dedicated Short Range Communications (DSRC) and Cellular V2X (C-V2X). DSRC technology is a Wi-Fi variant known as 802.11p, operating in the 5.9 GHz band. Historically, DSRC-based V2X was supported by the US FCC (Federal Communications Commission) dating back to 1999 and its standard drafting began from 2004. With decades of development, DSRC-based V2X is mature in terms of technology and commercialization readiness. C-V2X, encompassing LTE-V2X (LTE refers to Long-term-evolution, LTE-V2X is 4G-based V2X) and 5G-V2X, is a 3GPP-based global vehicle wireless automatic toll payment system evolving from 4G and 5G cellular network. Though its research began far later than DSRC, with standard drafting starting in 2015, C-V2X gains second-mover advantages in many perspectives. DSRC-based V2X vs. C-V2X C-V2X provides ...

What is V2X Communication?

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Vehicle to Everything (V2X), referring to Vehicle to Vehicle (V2V), Vehicle to Infrastructure (V2I), Vehicle to Pedestrian (V2P) and Vehicle to Network (V2N), is a wireless technology that allows vehicles to communicate with other vehicles and its surroundings. V2V communication is a kind of traffic control management that enables wireless data exchange among vehicles via on-board unit (OBU). Vehicles with V2V communication can broadcast real-time messages to surrounding vehicles and receive broadcast messages to provide decision-making aid for drivers. For example, vehicles with V2V communication can determine potential crash threats by analyzing data, such as location, speed, acceleration and other status elements, of other vehicles in proximity to warn drivers in time. V2I communication is the wireless exchange of data between vehicles and road infrastructure (such as traffic light, traffic camera and roadside unit). Road infrastructure can obtain data from vehicles in proximity...