| Network Working Group | D. Liu |
| Internet-Draft | Alibaba Group |
| Intended status: Experimental | March 9, 2015 |
| Expires: September 10, 2015 |
Scenario of Intelligent Transportation System
draft-liu-its-scenario-00
This document discuss the scenario of intelligent transportation system.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119].
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This document introduces several intelligent transportation system mobile applications. From those applications, we analyze the scenario and requirement of intelligent transportation system.
Waze (https://www.waze.com/) is a community-based traffic and navigation application. The drivers who use waze can share the traffic related event to other waze users. Traffic related event includes traffic jams, accidents, road hazards etc. It uses the idea of UGC (User Provided Content) to generate real-time traffic map. Waze users can also communicate with each other using the waze platform. For example, a group of friends that have the same destination can share their location to coordinate everyone's arrival times.
Waze architecture is shown in figure 1.
preamble to the figure.
+---------------------------+
| Waze Platform |
| +Navigation |
| +Road Info |
| +Traffic Info |
| +Group communication |
+---------------------------+
| | |
+-----------+ | +----------+
| | |
+----------+ +----------+ +----------+
| Waze App |<----> | Waze App |<------>| Waze App | ...
+----------+ share +----------+ share +----------+
Driver Driver Driver
Figure 1: Waze architecture
Summary of the Waze architecture
iRezQ is another mobile application in the ITS field. Its main use case is for driving safety. The iRezQ mobile application running on the driver's mobile phone can monitor the vehicle's speed to detect whether there is a collision. When collision is detected, iRezQ application can dial the emergency call automatically. The architecture of iRezQ architecture is shown in figure 2.
+--------------------+
| SOS Operator |
+--------------------+
^
|
+--------------------+
| iRezQ Platform |
+--------------------+
| | |
+------+ | +--------+
| | |
+---------+ +---------+ +----------+
|iRezQ App| --> |iRezQ App| |iRezQ App |
+---------+ Warn +---------+ +----------+
Crash
Figure 2: iRezQ architecture
Summary of iRezQ architecture:
Sentinel is security system used in Dakar rally. It is a security system that alerts the drivers and riders about imminent overtakes or accidents. It beeps and glows to warn the rider that he is going to be overtaken. It alerts the participant who's being overtaken when there are 200m between two vehicles. The architecture of sentinel is shown in figure 3.
+----------+
| Vehicle |
+----------+
| 200m +----------+
+---------->| Vehicle |
Warn +----------+
Figure 3: Sentinel architecture
Summary of sentinel architecture:
Coyote System is a provider of community-based driving assistants. Coyote provides real-time information on speed limits, road hazards and traffic conditions to the coyote users. The architecture of coyote is shown in figure 4.
+------------------+
| coyote platform |
+------------------+
+------------------|--------------------+
+----------+ +----------+ +-----------+
|coyote App| |coyote App| | coyote App|
+----------+ +----------+ +-----------+
Figure 4: Coyote architecture
Summary of coyote architecture:
This section discusses the communication requirement of ITS application. Section 1 introduces several ITS mobile applications. From the analysis, we can conclude that:
IP provides the most flexibility from the developer's perspective. There are plenty of developers that are familiar with developing application based on TCP/IP. If there is a direct IP connection between vehicles, it will help the developers to develop more innovative and useful applications.
This document makes no request of IANA.
TBD
TBD
| [RFC2119] | Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. |