C-V2X Use Cases and Service Level Requirements Volume II
Following the first volume (Volume I) set of Use Case descriptions (previously named as ‘WAVE 1’) and the corresponding framework developed in WG1, this document presents the second volume of Use Case descriptions (previously named as ‘WAVE 2’). One of the goals with this second set is to describe advanced Use Cases that have challenging requirements for future communication systems, such as 5G – as reflected in the report title.
The Use Case descriptions are written from the vehicle perspective and strive to be solution agnostic and applicable to both driven and autonomous vehicles. The realisation of Use Cases does not preclude applications performing various tasks supporting the Use Cases, such as collecting information, analysing etc.
Read the full report
Reducing EU Transport Emissions: Can C-V2X Deployment play a Significant Role?
On 24 November 2020, the 5G Automotive Association, in partnership with Euractiv, hosted a debate to discuss how C-V2X can contribute to reducing transport emissions.
To what extent can connected driving, with increasing levels of automation, lead to environmental benefits? To answer this question, 5GAA asked Dutch non-profit organisation TNO to conduct a study into the environmental effects of V2X communication as it is currently used in transport and as it can be used in future implementations.
During the event, the organisation presented the results of the study. These highlighted the specific C-V2X functionalities that offer the biggest emission reductions and therefore a contribution to the EU’s climate goals.
Indeed, at the time of the broadcast, the European Commission was working the Sustainable and Smart Mobility strategy, proposing measures that match the ambition of the recently updated emissions reductions goals. Policymakers aimed to leverage digitalisation and automation to create a more sustainable future for the transport and mobility sector.
Watch the video below to have some highlights of the event.
C-V2X Use Cases and Service Level Requirements Volume I
The present report represents the latest version of the first set of Use Case descriptions (Volume 1 – previously named WAVE1) developed in the context of the 5GAA WG1 work item “Use Case and KPI requirements”. The report introduces and explains the WG1 approach to describe Use Cases and their Service Level Requirements (SLRs). It includes a framework for the Use Case descriptions and a framework for Use Case Service Level Requirements collection. The two frameworks are applied to the Use Cases provided in the 5GAA Board Internal Guidance Document.
Read the full report
New report released to support vehicle to infrastructure connectivity deployment
5GAA, a global cross-industry consortium working to develop end-to-end solutions for future mobility and transportation services, commissioned Ricardo to develop the report to help improve understanding of the costs, challenges and opportunities of different communication technology approaches to Vehicle to Infrastructure (V2I) use cases.
V2I is not a new technology consideration, with research and development activities related to connected vehicle applications ongoing for over two decades. However, there is now growing momentum for wider scale deployment of communication technologies in both vehicles and road infrastructure.
To date deployment activities have been fragmented and relatively slow, due to continued emphasis on research, no common vision of communication technologies and market uncertainty, making it challenging for most stakeholders to develop suitable business cases.
To help support a greater understanding of financial viability of the communication approaches implemented in the EU and US V2I market, Ricardo transport and mobility experts, supported by technical experts from Roke Manor Research, analysed a range options which include the use of a pure cellular network system and using a combination of the cellular network with direct communication interfaces via the radio spectrum.
Using outputs from extensive research and engagement with key ecosystem players, the study weighs up strengths, weaknesses and complementarity of the different communications technologies in terms of their technical performance and costs, aligning them with the different use cases. For example, the cost analysis highlights that a pure cellular deployment approach in Europe and US is 40-45% lower cost compared with deployments that include direct communication roadside units.
To recognise the opportunities and benefits identified, Ricardo’s experts have made a number of recommendations that include increased cooperation and communication of roadmaps between vehicle manufacturers, central government, road operators and cellular technology providers – in particular with the consideration of interoperability of technology solutions. Central government are also identified as playing a key role through effective implementation of financial instruments to leverage private sector investment and support wider deployment.
Denis Naberezhnykh, Ricardo’s transport technical director commented: “Increased communication and connectivity between vehicle and infrastructure have the potential to create significant benefit, not only to the user of the vehicle, but also through wide-ranging societal benefits that will positively impact the economy, community mobility and the environment. The current fragmentation of technical approaches and stakeholders has the potential to significantly slow V2I market adoption and so we’re proud to develop this report, on behalf of 5GAA, to create greater understanding of financial viability and how that aligns with technology choices, as well as to help identify where increased collaboration is needed”.
Ricardo plc is a global, world-class, multi-industry consultancy for engineering, technology, project innovation and strategy. Our people are committed to providing outstanding value through quality engineering solutions focused on high efficiency, low emission, class-leading product innovation and robust strategic implementation. With a century of delivering excellence and value through technology, our client list includes the world’s major transportation original equipment manufacturers, supply chain organizations, energy companies, financial institutions and governments. Guided by our corporate values of respect, integrity, creativity & innovation and passion, we enable our customers to achieve sustainable growth and commercial success. Ricardo is listed in the FTSE4Good Index, which identifies global companies that demonstrate strong environmental, social and governance (ESG) practices. For more information, visit www.ricardo.com.
Ricardo Energy & Environment is a leading sustainability consultancy, helping clients to respond to environmental challenges and opportunities around the world. Its team of over 450 staff draws on an impressive heritage supporting governments and businesses for over 40 years. The consultancy is an operating division of Ricardo plc. For more information, visit https://ee.ricardo.com/.
Media contacts:
Trevor Glue
Ricardo Energy & Environment
Tel: +44 (0) 1235 753429
E-mail: trevor.glue@ricardo.com
Anthony Smith
Ricardo Media Office
Tel: +44 (0)1273 382710
E-mail: media@ricardo.com
5GAA Releases New 2030 Roadmap for Advanced Driving Use Cases, Connectivity Technologies and Radio Spectrum Needs
BRUSSELS, 8 September 2020 – In the next two to three years, the 5G Automotive Association’s (5GAA) expects to see mass deployment of vehicle-to-everything (V2X) use cases geared towards improving traffic efficiency and road safety around the world. This vision is outlined in a new White Paper released by 5GAA which explores how leading automakers, mobile
network operators and their suppliers see the world of automotive connectivity evolving over the coming decade.
Vehicles talking to one another but also to roadside and telecom infrastructure and operators – so-called V2X communication – is just the tip of 5GAA’s vision for ‘advanced 5G-connected driving’. In its latest White Paper, 5GAA offers a comprehensive roadmap to guide all parties involved in this near-term market development, bringing both automotive and telecom sectors together to fulfil what 5GAA sees as a powerful digital ecosystem in this fast-moving field.
The Paper highlights selected end-to-end V2X applications factoring in the necessary technological evolution, industry readiness and spectrum needs. 5GAA has developed ‘advanced driving’ use cases such as Cooperative Manoeuvres and Sensor Sharing in conjunction with both the adoption of Cellular Vehicle-To-Everything (C-V2X) standards and the availability of the required technologies and devices. These provide a tangible account of how advanced driving is taking shape globally.
“Success in this endeavour requires to have all industry stakeholders on-board, including telecoms and automotive. Only then will new business opportunities and necessary investments be secured to fuel this ‘ecosystem’,” said 5GAA’s CTO and spokesperson Maxime Flament upon the White Paper’s launch.
With close to 200 million ‘connected vehicles’ already on the roads worldwide in 2020 and a growing number of vehicles with the ability to exchange traffic and road condition information over cellular networks, the foundations for 5G-connected driving are well established, the Paper points out. Further progress in coming years will pivot around 5G-V2X use cases for more efficient and safe driving. From 2025 onwards, 5GAA anticipates mass rollout of more advanced automated driving and safety use cases supported by vehicle connectivity. Additional automated driving functionalities are anticipated as from 2026.
Between now and 2024, ‘connected’ digital road infrastructure will pave the way for real-time or ‘dynamic’ traffic updates, hazard warnings, and high-definition mapping services. Towards 2026, advanced vehicle-to-vehicle (V2V) cooperation will further boost automated driving developments, including sharing sensor data and cooperative manoeuvring.
To fully support this evolution, 5GAA calls on national and regional administrations to make sufficient radio spectrum available for mobile communication networks in targeted low- and mid-bands, and it recommends harmonised use of the 5855-5925 MHz band for communication between road users and roadside infrastructure within the wider international digital traffic ecosystem.
Here, the White Paper acknowledges that some 5G-enabled applications may prove challenging to implement, while others will be easier and offer valuable lessons going forward: “Low-hanging fruit applications addressing OEM fleets, such as automated valet parking and tele-operated driving will open the door to more secure, safe and interoperable vehicle-to-network automotive applications across borders.”
Charting a clear way forward…
All in all, to deliver end-to-end V2X services and unlock the true value of vehicle connectivity, 5GAA considers that the realisation of its roadmap would require:
(1) sufficient spectrum for short-range direct communications at 5.9 GHz
(2) high levels of mobile network coverage along the roads
(3) sufficient service-agnostic mobile network spectrum for mobile network-based communications, in addition to the bands that are currently identified for International Mobile Telecommunications (IMT) use.
The essence and great promise of 5G is that it makes better use of the radio spectrum, boosts mobile network coverage, security and safety, while delivering environmental benefits for citizens and consumers. To chart a clear way forward, 5GAA calls on all players to work together while implementing the use cases highlighted in the Paper, as well as other measures outlined in 5GAA technical reports and papers.
About 5GAA
The 5G Automotive Association (5GAA) is a global, cross-industry organisation of companies and OEMs from the automotive, technology and telecommunications industries working together to develop end-to-end solutions for future mobility and transportation services. 5GAA is uniquely placed to support 5G-V2X advances because it unites all major automotive, chipset, technology, telecom-mobile infrastructure and mobile network operators. In less than three years, more than 135 global players, including pioneering OEMs, have signed up to 5GAA’s vision.
For more information, please contact our media team at marcom@5gaa.org
Download the Roadmap
5GAA officialises five new MoUs during Brussels conference
Is 5G in-car technology ready for automated driving? Are Europe’s roads up to speed for this digital revolution? Are governments, road authorities and industry on the same page? What is Europe’s strategy to secure leadership and capture markets in the field? These and other pressing questions and challenges for connected and automated mobility were addressed on 6 February, at the 5GAA-hosted event – 5G, Igniting the Connected and Automated Mobility Revolution – in Brussels’ Concert Noble. High-level representatives and experts from industry, governments and the EU explored the capabilities, deployment models and vast opportunities of the latest ‘cellular vehicle to everything’ (C-V2X) technology.
BRUSSELS, 6 February 2020 – The 5G Automotive Association (5GAA) organised a conference bringing together EU representatives and the connected automotive ecosystem to the heart of Europe, to officialise its public-private partnerships with several European authorities. Indeed, 5GAA announced extending its partnership network by signing Memoranda of Understanding with the Dutch Ministry of Infrastructure and Water Management, the Italian Ministry of Technological Innovation and Digitalisation, the Spanish Directorate-General of Traffic (DGT), the German Federal Highway Research Institute (BASt) and the Electronic Communication Office of Latvia (VASES). The ambition of the association is to strengthen the collaboration between industry and the public sector and to facilitate the dialogue to drive innovation in mobility and transport with these closer collaborations.
Some recognised speakers at the conference included BMW’s Joachim Göthel, Senior Manager in the German automaker’s ‘Project 5G Alliance’, and Dino Flore who is Vice-president of Technology at Qualcomm, the US chipmaker, as well as Robert MacDougall who heads mobile operator Vodafone Enterprise’s Public Policy Unit. They were joined by senior EU policymakers, including a message from Maria Koleva on behalf of the European Commissioner for Innovation, Research, Culture, Education and Youth Mariya Gabriel and speech by Pearse O’Donohue, Director for Future Networks, Directorate-General for Communications Networks, Content and Technology, as well as national experts from the Netherlands and Spain giving their unique perspective.
“To fulfil its potential in connected and automated mobility, Europe really needs a clear policy message reinforcing its ‘technology neutral’ approach in the future C-ITS regulations,” noted 5GAA’s CTO and spokesperson Maxime Flament.
Automated and connected driving, intelligent driver assistance and data-driven transportation network optimisation are examples of what tomorrow’s transportation will look like for people and governments.
Discussions and conclusions reached at the 5G, Igniting the Connected and Automated Mobility Revolution conference thus paint a rich picture of the work currently underway and the roadblocks and potential detours that may lie ahead. With the help of audience contributions, the event helped to chart the way for future autonomous transport that not only meets the needs of society and industry but can also make a positive contribution to meeting the global Sustainable Development Goals in terms of cleaner and safer transportation.
About 5GAA
The 5G Automotive Association (5GAA) is a global, cross-industry organisation of over 130 members comprised of leading global automakers, Tier-1 suppliers, mobile operators, semiconductor companies and test equipment vendors. It works together to develop end-to-end solutions for future mobility and transport services. 5GAA is committed to helping define and develop the next generation of connected mobility, automated vehicle and intelligent transport solutions based on C-V2X.
Learn more on the 5GAA website and follow us on Twitter and LinkedIn.
Media Contacts
Delia Voica
Tel.: +32 486 69 76 22
Email: delia.voica@5gaa.org
Marketing and Communications Team
Email: marcom@5gaa.org
5GAA Meets Brussels 2020: Face-to-Face Meeting and Conference
The 5G Automotive Association (5GAA) has the pleasure to announce its Conference on 6 February in Brussels.
This event is intended to advance the dialogue between high-level institutional and industry stakeholders on current challenges in the field of connected and automated mobility. Representatives from the European institutions, from local and national authorities, and 5GAA members will discuss ongoing challenges for connected and automated mobility and provide solutions by presenting the capabilities and deployment models of the Cellular Vehicle to Everything (“C-V2X”) technology.
Agenda:
09:00 – 09:30: Welcome and Introduction
09:30 – 10:30: First Session
– 5G: The Connected and Automated Automotive Revolution
– 5G in Cars: Is the Technology Ready?
– Digitalising European roads: leveraging synergies with mobile networks
10:30 – 11:00: Coffee Break
11:00 – 12:00: Second Session
– Current status of the 5G Strategic Deployment Agenda in Europe
– The Evolving Role of National Road Authorities in The Digital Era
12:00 – 12:50: ‘Ask the 5GAA experts’ Session
12:50 – 13:00: Closing Session
Confirmed speakers include:
– Mariya Gabriel, European Commissioner for Innovation, Research, Culture, Education and Youth (video message)
– Dino Flore, Vice President of Technology, Qualcomm
– Caspar de Jonge, Dutch Ministry of Infrastructure and Water Management
– Johannes Springer, CTO Connected Car T-Systems & Director General of the 5G Automotive Association
– Maxime Flament, CTO of the 5G Automotive Association
More speakers will be announced shortly.
Stay tuned for the detailed programme!
5GAA live demos show C-V2X as a market reality
Turin, 14 November 2019 – Smart mobility technology is a reality today, with ‘Cellular Vehicle-to-Everything’ (C-V2X) allowing connected vehicles to communicate with the cloud, directly with each other and their surroundings. Deployment plans are primarily sustained by the global trend in the automotive industry to adopt 4G LTE cellular technology, followed by the emerging 5G high-speed low latency communications. Beyond infotainment, C-V2X will capitalize on vehicular and smartphone connectivity to contribute to better safety, less congestion and reduced emissions.
During a live demo event in Turin, the 5G Automotive Association (5GAA) showcased ready to deploy use cases in the streets of the city and a sneak preview of what the future has in store on the renowned Lingotto rooftop test track.
Prominent members and partners of the 5GAA including Audi, Continental, Ericsson, Fiat Chrysler Automobiles, Harman Samsung, Marelli, Pirelli, Qualcomm, TIM and Vodafone demonstrated the current state of C-V2X and the road to future, Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I), and Vehicle-to-Network (V2N) applications based on 4G LTE and 5G.
“Connected mobility is a market reality.” says 5GAA Chief Technology Officer, Dr. Maxime Flament. “The use cases demonstrated in the streets of Turin are planned for deployment with a huge industry momentum based on the evolution path to 5G capabilities.”
Using both direct short-range communications and mobile networks, the open-road demonstrations showcased the extensive capabilities of today’s C-V2X technology, ready for deployment. To name a few:
- Protecting vulnerable road users, for instance, by alerting drivers about a pedestrian at a crossing using LTE-connected infrastructure.
- Smoothing traffic by allowing public authorities and road operators to provide real-time warnings to drivers in urban environments concerning roadworks or speed limits, via the network.
- Preventing incidents at dangerous intersections or in the event of unexpected braking, thanks to C-V2X direct-short range communications between vehicles.
The track demonstrations at Lingotto underlined the enhanced safety benefits that can be expected thanks to the versatility of 5G and the wide range of services it enables. To name a few:
- Vehicles will geo-tag dangerous areas for the following cars or provide ‘see-through’ functions to avoid dangerous overtaking.
- Pedestrians will be detected directly via their smartphones and surrounding vehicles will be warned.
- In case of accidents, emergency services will be able to visualize the situation live using on-board cameras of surrounding vehicles, improving response times and providing emergency responders situational awareness prior to arriving at the crash scene.
Furthermore, Intel showcased an “In Vehicle Entertainment” demo at the Museum, in collaboration with Marelli, TerraNet and Equinix, showing how Multi-Access Edge Computing (MEC) can support immersive high-definition (HD) entertainment for all occupants of a moving vehicle, including video streaming, gaming, virtual reality (VR), office work, online education, advertisement.
A short summary on each of the 5GAA C-V2X use cases, demonstrated today in Turin
Demo 1 “Vulnerable Road Users”: open road demos on safety
In this trial – which is part of Torino Smart Roads Initiative patronized by the Municipality of Turin – TIM, Links Foundation and Luxoft showed how the communication between the various actors moving along the roads can help in detecting potentially dangerous situations. The goal of the demos was to demonstrate how the 5G mobile network facilitates the protection of Vulnerable Road Users: pedestrians (“Presence of a pedestrian on a crosswalk”) and cyclists (“Presence of a connected bike on the road”). In the case of a pedestrian approaching a crosswalk, a Roadside Unit connected to the mobile network, equipped with a camera able to detect the event, sent a warning message to the nearby connected vehicles (I2V communication). In the case of a connected bike and a connected vehicle that are approaching each other, the two vehicles received a warning message about their presence when a risk of collision is detected.
Demo 2 “Urban Georeferenced Alerting” in open roads
TIM, FCA, Links Foundation, City of Turin with 5T, and Politecnico di Torino showed how the Local Traffic Authority in Turin intends to notify drivers in real time of possible dangers and special situations on the road (traffic jam, road works warning, dynamic speed limit, etc.). A standard geo-referenced warning message was dispatched to a TIM AMQP broker” at the edge of the 5G mobile network and only the involved vehicles received the geo-localized message from the AMQP Broker using the TIM 5G Network. The warning was read and displayed in an FCA vehicle through the on-board HMI and can for instance notify the driver of upcoming speed reduction. The aim of the trial was to demonstrate how the TIM 5G Network is suitable for realizing smart roads services for connected cars. The solution is compliant with the standards so it can be applied in other locations covered with mobile networks.
Demo 3 Intersection Movement Assist (IMA), Forward collision Warning (FCW)
FCA and Harman Samsung showcased two Vehicle to Vehicle (V2V) demos, by integrating C-V2X direct-short range communication into Maserati Levante and Quattroporte. The vehicles, through a direct radio link (network-less radio link), anonymously communicated basic information such as their position and related direction.
The Forward Collision Warning (FCW), detected possible frontal collision and warned the driver accordingly. The Intersection Movement Assist (IMA), assisted the driver at the cross junctions to avoid a possible lateral collision with an oncoming vehicle.
Demo 4 Emergency Electronic Brake Light (EEBL), Stationary Vehicle Warning (SVW)
FCA, Continental, and Qualcomm demonstrated fast and reliable information exchange between vehicles in emergency situations. The two demos are based on C-V2X direct-short range technology, enabling Vehicle-to-Vehicle (V2V) communication between two Jeep Renegade. There were two portions to this demo:
- “Stationary Vehicle Warning” (SVW): when the hazard lights are activated, the application broadcasted a message to all nearby vehicles so that approaching vehicles could be informed even if the hazard was not visible.
- “Emergency Electronic Brake Light warning” (EEBL): in the event of a sudden braking, the application broadcasted a message to following vehicles, such that approaching vehicles were notified of the potentially dangerous situation.
Demo 5 See-through
Vodafone, FCA, Vodafone Automotive, Marelli and Altran revealed the ‘See Through’ that uses C-V2X long-range cellular network communication to exchange streamed video in real time between vehicles, extending the driver’s visual range under obstructed visibility scenarios and to prevent accidents, especially those that may occur in an overtaking phase. The two involved Jeep Renegades vehicles were equipped with a connectivity solution (Marelli) and high frame-rate cameras (Marelli Motorsport) to detect the road lanes.
A real time tracking system and a space mapping algorithm of the vehicles, specifically developed by Vodafone Automotive, allowed Vodafone’s Multi-access Edge Computing (MEC) to dynamically manage and route the video flows on the basis of the vehicles’ relative positions and to ensure minimal end-to-end latency in the interest of drivers’ safety. Vodafone 5G ultra-low latency and high reliability were paramount to ensure the flow and synchrony of the real-time video exchange between vehicles, also under high traffic and cell saturation conditions.
Demo 6 World-first 5G-enhanced ADAS services
Audi, Ericsson, Italdesign, KTH, Pirelli, Qualcomm, TIM and Tobii showed how smart cars, commercial 5G smartphones and 5G networks jointly improve comfort, safety and efficiency. This unique collaboration combined the power of eye-tracking glasses, intelligent tires, in-vehicle augmented reality and 5G phones to work together over a live 5G network. With its high capacity and low latency, cellular 5G connectivity is ready to enable instantaneous cooperation between vehicles, the IoT ecosystem and more advanced driver assistance services. The live demonstrations at the Turin Lingotto test track were based on TIM’s commercial 5G network delivered in Turin in partnership with Ericsson. Audi cars, equipped with Pirelli Cyber Tyre, and embedded 5G modems provided by Qualcomm and available 5G smartphones were utilized to enhance pedestrian’s safety.
About 5GAA
The 5G Automotive Association (5GAA) is a global, cross-industry organisation of over 130 members comprised of leading global automakers, Tier-1 suppliers, mobile operators, semiconductor companies and test equipment vendors. It works together to develop end-to-end solutions for future mobility and transport services. 5GAA is committed to helping define and develop the next generation of connected mobility, automated vehicle and intelligent transport solutions based on C-V2X.
Learn more on the 5GAA website and follow us on Twitter and LinkedIn.
Media Contacts
5GAA Marketing & Communications
Email: marcom@5gaa.org
Official pictures: Conference – Demonstrations
5GAA to be main supporting partner of 5G Techritory – Riga, 27-29 November 2019
5G Techritory is the annual Baltic Sea Region 5G Ecosystem Forum organised by the Electronic Communications Office (ECO) of Latvia, aiming at gathering decision makers, major representatives from industry associations, and business leaders to discuss the deployment of the earliest available commercial applications of 5G technology. Its second edition is going to be held in the Latvian capital, Riga, on 27-29 November.
Taking place in a vibrant region for 5G implementation, the 5G Automotive Association is proud to be confirmed once again as one of the main partners of this conference. 5GAA Director General Johannes Springer is going to participate as a speaker in front of an audience of up to a thousand senior professionals invited upon an attentive selection to ensure the highest quality of debate.
The Baltic Sea Region includes nine countries comprising of a population of 150 million people. Among the Baltic countries, Latvia appears in the third place of the 5G Readiness ranking according to the European Commission’s Digital Economy and Society Index (DESI) 2019 report. This result shows that the potential for international leadership in the field is highly promising and this edition has all the characteristics to be a must-visit, given the renewed interest for digital and technology of the newly appointed European Commission.
Since the objective of the programme is to focus on what is readier for commercialisation, four verticals have been identified as the main topics:
- Smart City
- Smart Mobility
- Industry 4.0
- Smart Media and Entertainment
In addition, a 5G policy hackathon, a key stakeholders’ roundtable and an exhibition are scheduled as side events.
Registration is open and all the possible interested participants are encouraged to apply.
See the official press release and leaflet.
5GAA publishes test results in support to C-V2X FCC petition for waiver
Recently, the 5G Automotive Association (5GAA) filed a petition for waiver with the Federal Communications Commission of the United States requesting that C-V2X be allowed to operate in the upper 20 MHz (5905 MHz – 5925 MHz) of the US ITS band.
In support of this petition, 5GAA member companies have performed a series of tests in an attempt to address anticipated technical questions related to the favourable implementation of this petition. The report describes the test procedures and results that were undertaken to support the 5GAA C-V2X FCC petition for waiver in the 5.9 GHz band.
The report presents results of testing C-V2X in 20-MHz wide CH183 – the channel that has been recently proposed for C-V2X deployment in the ITS band and is referred to as basic C-V2X Channel and it allows for V2V and V2X messages such as basic safety message (BSM), signal phase and timing (SPaT), signal request message (SRM), signal status message (SSM), and others covered by the Road Safety Message under development in SAE standards. The upper part of the ITS band was chosen to minimize impact to DSRC channels, especially CH172.
The viability of C-V2X in 10 MHz has been demonstrated in a preceding report in which C-V2X has been shown to outperform DSRC in terms of reliability, resilience to out-of-band interference and range. This report extends these results by showing that a BSM message sent in 20‑MHz CH183 has the same reliability as previously shown in 10-MHz CH184.
Both lab and field data included in the report demonstrate consistent results:
- C-V2X communication in 20-MHz CH183 has the same reliability performance (Packet Reception Ratio vs. distance) as the identical BSM-like message transmission in 10-MHz CH184.
- Impact of C-V2X high load transmissions in CH183 on DSRC basic safety transmissions in CH172 is negligible up to a 1.4-km range in LOS conditions
- Impact of C-V2X high load transmissions in CH183 on V2I and I2V transmissions in CH178 is negligible up to a 1.4‑km range in LOS conditions
- Impact of C-V2X high load transmissions in CH183 on V2I and I2V transmissions in CH180 is negligible up to 1 km in LOS Conditions
Read the full report here.