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Powerline communication (PLC) provides inexpensive, secure and high speednetwork connectivity, by leveraging the existing power distribution networksinside the buildings. While PLC technology has the potential to improveconnectivity and is considered a key enabler for sensing, control, andautomation applications in enterprises, it has been mainly deployed forimproving connectivity in homes. Deploying PLCs in enterprises is morechallenging since the power distribution network is more complex as compared tohomes. Moreover, existing PLC technologies such as HomePlug AV have not beendesigned for and evaluated in enterprise deployments. In this paper, we firstpresent a comprehensive measurement study of PLC performance in enterprisesettings, by analyzing PLC channel characteristics across space, time, andspectral dimensions, using commodity HomePlug AV PLC devices. Our resultsuncover the impact of distribution lines, circuit breakers, AC phases andelectrical interference on PLC performance. Based on our findings, we show thatcareful planning of PLC network topology, routing and spectrum sharing cansignificantly boost performance of enterprise PLC networks. Our experimentalresults show that multi-hop routing can increase throughput performance by 5xin scenarios where direct PLC links perform poorly. Moreover, our trace drivensimulations for multiple deployments, show that our proposed fine-grainedspectrum sharing design can boost the aggregated and per-link PLC throughput bymore than 20% and 100% respectively, in enterprise PLC networks.

Towards Designing PLC Networks for Ubiquitous Connectivity in Enterprises