Multi-hop scatternet formation and routing for large scale Bluetooth networks

Abstract

This paper addresses the scatternet formation for large scale multi-hop Bluetooth networks. We first describe a novel communication efficient method to build a connected dominating set (CDS) as the backbone of multi-hop Bluetooth network, then propose new algorithms to form the dBBlue scatternets [1] in each cluster. Notice that our methods is not a simple combination of existing CDS methods and dBBlue algorithm. We propose a new algorithm for finding the connectors in CDS that are more suitable for multihop Bluetooth networks and several new algorithms to enable formation of dBBlue scatternets inside each cluster. The final scatternet, M-dBBlue, guarantees the connectivity. Our experiment shows the majority of nodes have degree smaller or equal to 7 which means our scatternet seldom parks any node. Our scatternet also enjoys efficient updating, since both the backbone and the dBBlue structure of each cluster can be maintained efficiently in a dynamic environment. We then propose a complete set of hierarchical routing methods for M-dBBlue which enables the self-routing inside each cluster. Moreover, our scatternet formation and routing algorithm do not require any position information at all.

Asynchronous Local Construction of Bounded-Degree Network Topologies Using Only Neighborhood Information

“…It is not clear, however, how to obtain a degree-bounded topology using the idea of a CDS with neighborhood information only. For example, [16], [33], [34] require extra position information at each node to obtain a CDS-based topologies with bounded node degrees.…”

“…Another approach to position-unaware topology control is to utilize the connected dominating set (CDS) [30]- [35] of the network. It has been shown in [33] that by using only neighborhood information, one can construct connected sparse topologies via a minimum or close-to-minimum CDS. It is not clear, however, how to obtain a degree-bounded topology using the idea of a CDS with neighborhood information only.…”

Building a dark piconet upon Bluetooth interfaces of computers

“…Once the authentication succeeds, one device may request to connect to the other via a virtual network adapter. Although a single hop Bluetooth network can cover only a limited area, investigators have developed various protocols to form multi-hop scattemets of these devices [7], [8].…”