The fisheye routing technique in highly mobile ad hoc networks


  • Persson Katarina
  • Johansson Erika
  • Sterner Ulf
  • Sköld Mattias

Publish date: 2003-01-01

Report number: FOI-R--1058--SE

Pages: 56

Written in: English


In tactical operations, it is important to have a robust and reliable communication system. Mobile ad hoc networks are distributed multi-hop wireless networks that allow the nodes to freely move through the terrain and still be able to exchange information. Topology changes in the network may occur often, and a routing protocol that finds and upholds routes for information through the network is of great importance. In this report we investigate how the Fisheye State Routing (FSR) protocol works in a highly mobile ad hoc network. We conclude that the Fisheye technique is efficient in the studied networks and that it is crucial to choose the protocol´s parameter settings based on the actual network capacity. Higher user capacity can be achieved by adapting the settings when the network environment changes. We also found that it is possible to combine the transmitting of Situation Awareness messages and the update messages used in the FSR protocol. However, to fulfill the Situation Awareness demands of accuracy, frequent update messages are required which leads to a high amount of routing traffic generated in the network.