Extra slot allocation for fair data collection in the slot-based grid network

Authors:
Junghoon Lee;Gyung-Leen Park
Affiliations:
Dept. of Computer Science and Statistics, Jeju National University, Jeju Do, Republic of Korea;Dept. of Computer Science and Statistics, Jeju National University, Jeju Do, Republic of Korea
Venue:
WASA'10 Proceedings of the 5th international conference on Wireless algorithms, systems, and applications
Year:
2010

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Abstract

This paper designs a fair message collection scheme on the grid-style wireless network, aiming at accelerating the fast and stable deployment of smart grid systems. Based on the slot-based medium access protocol, the proposed scheme allocates extra slots on each control round for the nodes along the fringe of the grid, as they unavoidably have poor delivery ratio due to long hops from the coordinator. Along the fringe path, the farther away from the coordinator, the higher priority a node has for message loss compensation. The simulation results, obtained from a discrete event scheduler, show that we can achieve up to 15.6% improvement of delivery ratio for the farmost node and 12.3% reduction of standard deviation, with 14.3% extension of control loop length.