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This paper presents an analysis of several neighbor sensing approaches for the OLSR routing protocol. While several performance studies of OLSR proceed this paper, few attention has been paid to the impact of neighbor sensing on the performance of ad hoc routing protocols. The goal of this paper is to better understand how neighbor sensing can contribute to packet loss in an OLSR network and thus degrade the overall performance. Three neighbor sensing schemes are compared: the OLSR HELLO messaging protocol, Fast-OLSR and a link-layer feedback scheme that uses information of the 802.11 MAC to determine lost links. To allow more detailed analysis of the events occurring in the network the authors initially limit their simulation setup to a simple scenario.
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