LokVaani

Vijay Gabale, Bhaskaran Raman, Kameswari Chebrolu, Purushottam Kulkarni
2010 Proceedings of the ACM SIGCOMM 2010 conference on SIGCOMM - SIGCOMM '10  
In this work, we consider the goal of enabling effective voice communication in a TDMA, multi-hop mesh network, using low cost and low power platforms. We consider two primary usage scenarios: (1) enabling a local voice communication within a village-like setting, in developing regions (2) supporting an on-site local communication among a team of users e.g. during emergency response systems. While there is plentiful literature on the use of TDMA for multi-hop wireless mesh networks, a practical
more » ... tworks, a practical multi-hop TDMA system remains elusive. Our contributions in this regard are three-fold. (1) We demonstrate the working of an 802.15.4-based low-cost, low-power, local communication system (referred as Lo 3 ) using custom made handsets and off-the-shelf platforms. (2) We show the practicability of LiT: a full-fledged TDMA-based multi-hop, multi-channel MAC protocol for real-time applications; especially on resource constrained platforms, (3) We present implementationbased evaluations results of LiT and show that our protocol achieves practical synchronization, and robust operation in the face of wireless packet errors. As the part of the demo, we showcase LokVaani: an interactive voice application for local communication with the help of Lo 3 prototype.
doi:10.1145/1851182.1851263 dblp:conf/sigcomm/GabaleRCK10 fatcat:chtoqvaaove7ld7tfqhveh5nyu