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Virtual-Coordinate-Based Delivery-Guaranteed Routing Protocol in Wireless Sensor Networks with Unidirectional Links

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5 Author(s)
Chia-Hung Lin ; Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu ; Bing-Hong Liu ; Hong-Yen Yang ; Chi-Yen Kao
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A wireless sensor network has unidirectional links because sensors can have different transmission ranges, sensors have unstable transmission ranges, and a hidden terminal problem exists. In this paper, we introduce a virtual coordinate assignment protocol (ABVCap_Uni) to assign virtual coordinates to nodes that have no geographic information in wireless sensor networks with unidirectional links, and we propose a routing protocol based on the ABVCap_Uni virtual coordinates. Our routing protocol guarantees packet delivery without computation and storage of global topology features in a discrete domain. Using simulation, we evaluate the performance of the proposed routing protocol (ABVCap_Uni routing), the greedy landmark- descent routing protocol (GLDR+VLM routing), and the greedy routing protocol based on physical coordinates (Euclidean routing). The simulations demonstrate that our routing protocol ensures moderate routing path length cost overhead.

Published in:

INFOCOM 2008. The 27th Conference on Computer Communications. IEEE

Date of Conference:

13-18 April 2008