Sciweavers

Share
MOBICOM
2010
ACM

The spaces between us: setting and maintaining boundaries in wireless spectrum access

9 years 9 months ago
The spaces between us: setting and maintaining boundaries in wireless spectrum access
Guardbands are designed to insulate transmissions on adjacent frequencies from mutual interference. As more devices in a given area are packed into orthogonal wireless channels, choosing the right guardband size to minimize cross-channel interference becomes critical to network performance. Using both WiFi and GNU radio experiments, we show that the traditional "one-size-fits-all" approach to guardband assignment is ineffective, and can produce throughput degradation up to 80%. We find that ideal guardband values vary across different network configurations, and across different links in the same network. We argue that guardband values should be set based on network conditions and adapt to changes over time. We propose Ganache, an intelligent guardband configuration system that dynamically sets and adapts guardbands based on local topology and propagation conditions. Ganache includes three key mechanisms: an empirical model of guardband sizes based on power heterogeneity of ...
Lei Yang, Ben Y. Zhao, Haitao Zheng
Added 06 Dec 2010
Updated 06 Dec 2010
Type Conference
Year 2010
Where MOBICOM
Authors Lei Yang, Ben Y. Zhao, Haitao Zheng
Comments (0)
books