NDLI: On the pitfalls of geographic face routing

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On the pitfalls of geographic face routing

Content Provider	ACM Digital Library
Author	Shenker, Scott Govindan, Ramesh Karp, Brad Kim, Young-Jin
Abstract	Geographic face routing algorithms have been widely studied in the literature [1, 8, 13]. All face routing algorithms rely on two primitives: planarization and face traversal. The former computes a planar subgraph of the underlying wireless connectivity graph, while the latter defines a consistent forwarding mechanism for routing around "voids." These primitives are known to be provably correct under the idealized unit-disk graph assumption, where nodes are assumed to be connected if and only if they are within a certain distance from each other.In this paper we classify the ways in which existing planarization techniques fail with realistic, non-ideal radios. We also demonstrate the consequences of these pathologies on reachability between node pairs in a real wireless testbed. We then examine the various face traversal rules described in the literature, and identify those [12, 16] that are robust to violations of the unit-disk graph assumption.
Starting Page	34
Ending Page	43
Page Count	10
File Format	PDF
ISBN	1595930922
DOI	10.1145/1080810.1080818
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2005-09-02
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Face changes Planarization Geographic routing Cross-link detection
Content Type	Text
Resource Type	Article

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