NS2 Simulation Code for Vanet

Types of communication:

• Vehicle-to-vehicle.
• Vehicle-to-infrastructure.

Advantages of NS2 Simulation Code for Vanet:

• Information sharing.
• Other value added services like navigation, internet access .
• Cooperative driving.

Technologies involved in VANET:

• Computational technologies.
• Video vehicle detection.
• Inductive loop detection.
• Floating car data/floating cellular data.
• Wireless communication.
• Sensing technologies.

Sample code for VANET:
This code explains how to vanet routing protocol broadcast message sending code.
void
VanetRBCAgent::sendRBC_pkt() {

int pktsz;

Packet* pkt = allocpkt(); // Create a new packet

struct hdr_vanet_rbc *hdr = HDR_VANET_RBC(pkt);

hdr_ip* iph = HDR_IP(pkt);
iph->daddr() = IP_BROADCAST;
iph->dport() = iph->sport();

hdr->rbc_msgtype = VANETTYPE_REGBC; // (necessary for dispatching!)

hdr->rbc_senderID = vanetID_;
hdr->rbc_timestamp = Scheduler::instance().clock();

MobileNode *pnode = (MobileNode*)Node::get_node_by_address(vanetID_);
pnode->update_position(); // update the position, before using it
hdr->rbc_posx = pnode->X(); // include current own location
hdr->rbc_posy = pnode->Y();

pktsz = hdr->size(); // get packet-size of this type
hdr_cmn::access(pkt)->size() = pktsz; // set it in the simulator

Scheduler::instance().schedule(target_, pkt,
crypto_delay_ + JITTER*jitterfactor_);

if(running_ == true)
pkt_timer_.resched(interval_);
}