5G NR based sidelink expands C-V2X
The presentation was part of a WebEx given by Qualcomm in March 2020.
- Rel 14/15 C-V2X momentum
- How does NR C-V2X bring advanced use cases?
- NR C-V2X demos and over-the-air simulations
C-V2X
Rel 14/15 C-V2X established basic safety
Rel 16 NR C-V2X saw continued evolution for advanced use cases
Release 14/15 C-V2X standardscompleted
Broad industry support with 5GAA
Global trials started in 2017; first commercial deployment expected in 2020
Qualcomm®9150 C-V2X chipset announced in September, 2017
Integration of C-V2X into the Qualcomm®Snapdragon™Automotive 4G and 5G Platforms announced in February, 2019
5GAA Automotive Association
- •8 of the top 9 global automakers
- Top automotive Tier 1 supplier
- •9 of the top 10 global telecommunications companies
- Top 3 global smartphone manufacturers
- Top global semiconductor companies
- Top 5 global wireless infrastructure companies
- Top global test and measurement companies and certification entities
- Global representation from Europe, China, US, Japan, Korea, and elsewhere
Standardizing messages for new use cases (e.g., sensor data sharing among vehicles)
Allowing vehicles from different automakers to benefit from new use cases
Defining application layer-specific minimum requirements for new messages
NR C-V2X builds on LTE C-V2X with advanced use cases
NR C-V2X supports adaptive 2-, 3-, 4-symbol DMRS for high-speed performance
NR C-V2X introduces complementary capabilities for advanced use cases
Variable reference signal design density
Strategic placement of reference symbols
NR C-V2X enhancements
Spectral efficiency:up to 2x for broadcast
Scalable OFDM and flexible DMRS provide higher spectral efficiency, which reduces bandwidth usage and allow for more capacity
Lower latency: Tx latency as low as 1.5 ms
Due to shorter slots and resources allocation enhancements
Higher capacity: 2x for per packet scheduling
Achieved through link-level gain, HARQ feedback, and resource allocation enhancements
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5G NR based sidelink expands C-V2X
