Towards robust distributed systems (abstract)
Proceedings of the nineteenth annual ACM symposium on Principles of distributed computing
Sympathy for the sensor network debugger
Proceedings of the 3rd international conference on Embedded networked sensor systems
FRACTEL: a fresh perspective on (rural) mesh networks
Proceedings of the 2007 workshop on Networked systems for developing regions
Beyond pilots: keeping rural wireless networks alive
NSDI'08 Proceedings of the 5th USENIX Symposium on Networked Systems Design and Implementation
Proceedings of the First ACM Symposium on Computing for Development
WiLdnet: design and implementation of high performancewifi based long distance networks
NSDI'07 Proceedings of the 4th USENIX conference on Networked systems design & implementation
NSDR '11 Proceedings of the 5th ACM workshop on Networked systems for developing regions
Local, sustainable, small-scale cellular networks
Proceedings of the Sixth International Conference on Information and Communication Technologies and Development: Full Papers - Volume 1
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In this work, we present our experiences of managing the deployment of a wireless mesh network to support real-time voice services in a village near Mumbai, India. We focus on three essential aspects of our deployment: (1) in-network mechanisms for ease of network planning, (2) network management and data collection in an operational network, and (3) fault-tolerance mechanisms for long-term network sustenance. Especially for rural deployment, where the amount of resources on the field are limited and frequent physical visits are costly, the consideration of these three aspects drastically simplified our deployment and measurement activities. Our in-network mechanisms constantly provided the desired network feedback to meet operational challenges while on the field. We carefully designed and implemented a low over-head and non-intrusive network management module over our TDMA based wireless mesh network. During our deployment, this module successfully diagnosed several network faults in a live network and collected required network statistics without affecting the primary application. We also implemented a set of fault-tolerance mechanisms in our prototype, and during our deployment, our network proved itself to be robust to various network failures. The villagers used our network for more than a month and availed more than hundred voice calls comprising of local calls within the village and remote calls to the phones in outside world.