ITS-G5/802.11p PHY/MAC

Overview

IEEE 802.11p is an approved amendment to the IEEE 802.11 standard to add wireless access in vehicular environments (WAVE), a vehicular communication system. It defines enhancements to 802.11 (the basis of products marketed as Wi-Fi) required to support Intelligent Transportation Systems (ITS) applications. This includes data exchange between high-speed vehicles and between the vehicles and the roadside infrastructure, so called V2X communication, in the licensed ITS band of 5.9GHz (5.85-5.925 GHz). 802.11p is the basis for dedicated short-range communications (DSRC). In Europe, 802.11p is used as a basis for the ITS-G5 standard, supporting the GeoNetworking protocol for vehicle to vehicle and vehicle to infrastructure communication.

Developed and implemented by Comsis, this IP addresses all Intelligent Transport Systems markets. This is accomplished by a combination of enhanced MAC and PHY VHDL implementations including OFDM, advanced signal processing techniques to cope with new ITS use cases. This IP will complete Comsis IPs portfolio (802.11a/b/g/n/i/e/ah).

Key Features

PHY Features

Licensed ITS bands
All Mandatory PHY layer including:

OFDM, Scrambling, Padding, FEC coding, Interleaving, iFFT/FFT
Single spatial stream (1x1 SISO), Modulation Coding Schemes (MCS)
Modulation: BPSK,…, 64QAM
Timing and frequency synchronizations
Channel estimation & compensation,
Data Rates (Mbps): up to 27Mbit/s

Full integration with AD RF Front end
Processing clock: 80MHz
Doppler effect correcting system

MAC Features

Ethernet connectivity
PHY Interface
IEEE802.11e standard (QoS)
IEEE802.11i standard (Security)

Benefits

SoC architecture
Robust receiver including advanced Doppler signal processing
Scalable solution
On demand customization available (specific business conditions may apply)

Applications

Decentralized Environmental Notification (DEN)
Traffic regulation (Infrastructure to vehicle communication)
Multimedia Content Dissemination (MCD)
Traffic light control for emergency vehicles (vehicle to infrastructure)
Early warning traffic communication

Deliverables

Fully synthesizable RTL VHDL-Verilog code
C code
Documents (user guide, reference manual)
Self-checking PHY Testbench configured by testcases /verification specification
Support

Technical Specifications

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