WAVE

Wireless access in vehicular environment (WAVE) is a next generation Dedicated short Range Communication (DSRC) technology which has speed of 6-27Mbps even in a fast moving situation. Therefore WAVE become a good candidate for implementing ITS. The basic function of the WAVE is to provide communication channel between vehicle to vehicle and vehicle to roadside device.There are two types of WAVE devices as roadside unit (RSU) and onboard unit (OBU). Where RSU is stationary andpermanently mounted along the roadside and OBU operates while mobile and is mounted ona vehicle. 


Generally RSU provides services to OBU and OBU runs a peer application relies on the services given by RSU. AS in IEEE standards the complete system is divided in to several applications and devices to maintain the flexibility of the system. Resource Manager (RM) is the service that runs on the RSU and Resource Command Processor (RCP) is the peer application on OBU. A remote application known as Resource Manager Application (RMA) communicates with RCP through RM. Using roadside unit’s services remote application can access the mobile unit’s resources like memory and UI.

P1609.1 Resource Manager


• describes key components of WAVE system architecture and defines data flows and resources
• defines command message formats and data storage formats
• specifies the types of devices that may by supported by OBU


P1609.2 Security Services for Applications and Management Messages


• defines secure message formats and processing
• circumstances for using secure message exchanges


P1609.3 Networking Services


• defines network and transport layer services, including addressing and routing, in support of secure WAVE data exchange
• defines WAVE Short Messages (WSM), providing an efficient WAVE-specific alternative to IP that can be directly supported by applications
• defines MIB for WAVE protocol stack


P1609.4 Multi-Channel Operations
• enhancements to 802.11 MAC to support WAVE