Cooperative vehicular delay-tolerant network diagram

This diagram sample illustrates the cooperative vehicular delay-tolerant network operation.
"Delay-tolerant networking (DTN) is an approach to computer network architecture that seeks to address the technical issues in heterogeneous networks that may lack continuous network connectivity. Examples of such networks are those operating in mobile or extreme terrestrial environments, or planned networks in space.
Recently, the term disruption-tolerant networking has gained currency in the United States due to support from DARPA, which has funded many DTN projects. Disruption may occur because of the limits of wireless radio range, sparsity of mobile nodes, energy resources, attack, and noise." [Delay-tolerant networking. Wikipedia]
"Routing in delay-tolerant networking concerns itself with the ability to transport, or route, data from a source to a destination, which is a fundamental ability all communication networks must have. Delay- and disruption-tolerant networks (DTNs) are characterized by their lack of connectivity, resulting in a lack of instantaneous end-to-end paths. In these challenging environments, popular ad hoc routing protocols such as AODV and DSR fail to establish routes. This is due to these protocols trying to first establish a complete route and then, after the route has been established, forward the actual data. However, when instantaneous end-to-end paths are difficult or impossible to establish, routing protocols must take to a "store and forward" approach, where data is incrementally moved and stored throughout the network in hopes that it will eventually reach its destination. A common technique used to maximize the probability of a message being successfully transferred is to replicate many copies of the message in hopes that one will succeed in reaching its destination." [Routing in delay-tolerant networking. Wikipedia]
The example "Cooperative vehicular delay-tolerant network diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Vehicular Networking solution from the Computer and Networks area of ConceptDraw Solution Park.

This telecommunication diagram sample shows the Mobile 2-Way Radio Network. It was designed on the base of the Diagram – Mobile 2-Way Radio Network from the "Telecommunications Handbook for Transportation Professionals: The Basics of Telecommunications" on the website of the Office of Operations of the Federal Highway Administration, the U.S. Department of Transportation.
"Mobile 2-Way Radio
Generally used between vehicles for wide area communication in a Private Land Mobile Radio Service (PLMRS) on frequencies set aside by the Federal Communications Commission (FCC) for that purpose. The system is used by DOT maintenance groups to facilitate operations between work crews and a central (or regional) dispatch center. Under the definition of the National Architecture, this is a wide-area mobile communication system. These same systems can also be used to coordinate joint operations between Police Departments and the DOT. These systems can also provide for an exchange of digital data information."
[ops.fhwa.dot.gov/ publications/ telecomm_ handbook/ chapter3.htm]
The telecom diagram example "Mobile 2-way radio network" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Computers and Communications solution from the Illustration area of ConceptDraw Solution Park.

This infographic sample visualizes the Conventional and wireless ad hoc network. It was designed on the base of the Wikimedia Commons file: Běžná bezdrátová síť a ad hoc síť.png.
[commons.wikimedia.org/ wiki/ File:B%C4%9B%C5%BEn%C3%A1_ bezdr%C3%A1tov%C3%A1_ s%C3%AD%C5%A5_ a_ ad_ hoc_ s%C3%AD%C5%A5.png]
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license. [creativecommons.org/ licenses/ by-sa/ 4.0/ deed.en]
"A wireless ad hoc network (WANET) is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre existing infrastructure, such as routers in wired networks or access points in managed (infrastructure) wireless networks. Instead, each node participates in routing by forwarding data for other nodes, so the determination of which nodes forward data is made dynamically on the basis of network connectivity. In addition to the classic routing, ad hoc networks can use flooding for forwarding data.
Wireless mobile ad hoc networks are self-configuring, dynamic networks in which nodes are free to move. Wireless networks lack the complexities of infrastructure setup and administration, enabling devices to create and join networks "on the fly" – anywhere, anytime." [Wireless ad hoc network. Wikipedia]
The infographic example "Conventional and wireless ad hoc network" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Computers and Communications solution from the Illustration area of ConceptDraw Solution Park.