Vicinity Resource Cartography for Delay-Tolerant Networks: a Holistic Perspective
2010 (English)Conference paper (Refereed)
In this paper we propose a distributed approachto construct vicinity resource maps at each node in a delay-tolerant network. The scheme uses recent encounters to estimatethe availability of the following resources: energy, buffer space,and bandwidth, in the vicinity of a given node. We then show howa store-carry-forward scheme may benefit from having accessto these resource estimates. While knowledge about resourcesavailable in the vicinity allows nodes to implement meaningfulcustodian election strategies, an evaluation of available band-width and contact time allows them to carry out adaptivequeue management strategies. Thus, such strategies can beapproached from a holistic perspective based on the availabilityof the three resources under consideration in node proximity. Wevalidate our model separately in time-varying and space-varyingenvironments. In addition to synthetic mobility models (randomwaypoint) we validate our resource estimation in a disasterarea mobility model (using Bonn motion traces). We show thatby using this information a routing protocol may dramaticallyimprove its delivery rate and reduce energy overhead whilekeeping delivery latency almost constant.
Place, publisher, year, edition, pages
IEEE , 2010.
, IFIP Wireless Days, ISSN 2156-9711
routing, resource management, delay-tolerant networks
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-72597DOI: 10.1109/WD.2010.5657725ISBN: 978-1-4244-9228-2OAI: oai:DiVA.org:liu-72597DiVA: diva2:460324
The 3rd IFIP Wireless Days, WD'10