02-09-2017, 10:01 AM
Delay-tolerant networking (DTN) is an approach to computer network architecture that seeks to address technical problems in heterogeneous networks that may lack continuous network connectivity. Examples of such networks are those that operate in mobile environments or ground ends, or networks planned in space. Recently, the term disrupting network tolerance has gained currency in the United States due to support from DARPA, which has funded many DTN projects. Disruption can occur due to wireless radio range limits, mobile node shortages, power resources, attacks and noise.
In the 1970s, boosted by the decline in the size of computers, researchers began to develop technology for routing between non-fixed computer locations. While the field of ad hoc routing was inactive throughout the 1980s, the widespread use of wireless protocols reinvigorated the field in the 1990s as the ad hoc mobile network (MANET) and the ad hoc vehicle link became in areas of increasing interest.
At the same time (but separate from) MANET activities, DARPA had funded NASA, MITER and others to develop a proposal for the Interplanetary Internet (IPN). Internet Painter Vint Cerf and others developed the initial IPN architecture in relation to the need for network technologies that can cope with significant delays and corruption of deep space communications packets. In 2002, Kevin Fall began adapting some of the ideas in IPN design to terrestrial networks and coined the term networks of tolerance to delay and acronyms DTN. A paper published in 2003 SIGCOMM conference gives the motivation for DTNs. In the mid-2000s there was increased interest in NTDs, including an increasing number of academic conferences on delay and disruption of the tolerant work network, and the growing interest in combining the work of sensor networks and MANETs with the work in DTN. This field saw many optimizations in classical ad hoc and network tolerance algorithms and began to examine factors such as security, reliability, verifiability, and other areas of research that are well understood in traditional computer networks.
In the 1970s, boosted by the decline in the size of computers, researchers began to develop technology for routing between non-fixed computer locations. While the field of ad hoc routing was inactive throughout the 1980s, the widespread use of wireless protocols reinvigorated the field in the 1990s as the ad hoc mobile network (MANET) and the ad hoc vehicle link became in areas of increasing interest.
At the same time (but separate from) MANET activities, DARPA had funded NASA, MITER and others to develop a proposal for the Interplanetary Internet (IPN). Internet Painter Vint Cerf and others developed the initial IPN architecture in relation to the need for network technologies that can cope with significant delays and corruption of deep space communications packets. In 2002, Kevin Fall began adapting some of the ideas in IPN design to terrestrial networks and coined the term networks of tolerance to delay and acronyms DTN. A paper published in 2003 SIGCOMM conference gives the motivation for DTNs. In the mid-2000s there was increased interest in NTDs, including an increasing number of academic conferences on delay and disruption of the tolerant work network, and the growing interest in combining the work of sensor networks and MANETs with the work in DTN. This field saw many optimizations in classical ad hoc and network tolerance algorithms and began to examine factors such as security, reliability, verifiability, and other areas of research that are well understood in traditional computer networks.