WiFlock: Collaborative group discovery and maintenance in mobile sensor networks

Low energy neighbor discovery, group formation, and group maintenance is a fundamental service in mobile sensor networks. Traditional solutions consider these protocols separately. In this paper, we introduce WiFlock, an energy-efficient protocol that combines discovery and maintenance using a colla...

Full description

Saved in:
Bibliographic Details
Published in:2011 10th International Conference on Information Processing in Sensor Networks pp. 37 - 48
Main Authors: Purohit, A, Priyantha, B, Jie Liu
Format: Conference Proceeding
Language:English
Published: IEEE 01.04.2011
Subjects:
Flocking
Group Management
Maintenance engineering
Mobile
Mobile communication
Mobile computing
Neighbor Discovery
Peer to peer computing
Protocols
Schedules
Sensor Networks
Synchronization
Wireless
ISBN:9781612848549, 1612848540
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Low energy neighbor discovery, group formation, and group maintenance is a fundamental service in mobile sensor networks. Traditional solutions consider these protocols separately. In this paper, we introduce WiFlock, an energy-efficient protocol that combines discovery and maintenance using a collaborative beaconing mechanism. WiFlock combines a coordinated synchronized listening and evenly-spaced transmission (SLEST) schedule effectively with oneway discovery beacons to fulfill both purposes. We show that shorter listening duration implies smaller discovery latency and faster group information propagation. Using a novel carrier sensing technique, we achieve a fast wakeup and listen duration of 80μs on a low-power radio. With this listening duration, we evaluate WiFlock on a 50-node test bed with nodes running at 0.2% duty cycles. We show that WiFlock has shorter discovery latency and better scalability than previous approaches.
ISBN:9781612848549
1612848540