Integrating directional links with omni-directional tactical MANET stack: an experimental analysis

  • Authors:

  • Titus Pottinger;Homayoun Yousefi'zadeh;Alex White

  • Affiliations:

  • The Boeing company;University of California, Irvine;Agile Communications

  • Venue:
  • MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
  • Year:
  • 2006

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Abstract

Utilizing directional links can augment the performance of omni-directional tactical MANETs. In this paper, we report the results of a modeling and simulation study focused on capturing the performance enhancement of tactical MANETs measured in terms of throughput and delay. We compare the performance enhancements of two alternatives for the integration of directional capability with omni-directional tactical MANET stack. While the first alternative utilizes a standard layered MANET stack, the second alternative takes advantage of a modified stack that can cope with the undesired effects of mobility by inserting an extra layer referred to as mobile layer between the data link layer and the network layer. Consequently, the standard and modified stacks integrate the directional capability at the network and mobile layer, respectively. Our findings show that integration at the mobile layer provides significant throughput and delay improvements and as such is the preferred way of adding the directional capability to omnidirectional MANET stack. Based on our results and in conjunction with the mobility mitigation characteristics, we conclude that the modified stack represents a better alternative than the standard stack for use with military programs such as JTRS GMR and FCS.