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EFFICIENT BRIDGE NEGOTIATION AND MANAGEMENT FOR BLUETOOTH-BASED PERSONAL AREA NETWORKS

DUGGIRALA, RANGANATH

Abstract Details

2004, MS, University of Cincinnati, Engineering : Computer Science.
Bluetooth is a short-range wireless technology designed to connect various low power, resource constrained devices such as cameras, cell-phones, laptops, handhelds, etc. Devices form autonomous ad hoc networks of up to 8 active devices, referred to as piconets. Piconets may be inter-connected by one or more bridge devices to form a scatternet. Research in Bluetooth today is largely based on scatternet models and includes optimal algorithms for scatternet formation, scheduling and traffic engineering. The bridges are the most important part of the scatternet as they bear the responsibility of a switch – relaying traffic from one piconet to another. Generally, the implicit assumption made is that the bridge already exists or that the bridge can be formed in some manner. However, the issues surrounding the bridge are complex and involve the masters of more than one piconet. In this paper we propose a framework – The Bridge Establishment, Adaptation and Maintenance (BEAM) – for bridge formation, maintenance, negotiation and termination. We have enunciated the mechanisms by which a node may be made a bridge and how it may be used to add or replace subsequent bridges. The framework has been designed to be flexible so that, it may be used by any of the scatternet formation or performance improvement algorithms. Bridges have an added responsibility of sharing their active time between the piconets that they are connected to. This could lead to a disproportionate energy usage pattern at the bridge nodes, as compared to other nodes in the piconet. When a bridge node dies, it could create a partition in the scatternet, leading to packet loss and delays. In this Thesis, we try to enhance the lifetime of the scatternet by simply improving the lifetime of the bridge, and extend the lifetime of the bridge by making a fair distribution of the role of being a bridge among different devices in the piconet. To achieve these goals, we propose a policy for managing bridge devices based on both prevalent traffic conditions and the energy available at devices using a weighted credit scheme.
Dr. Dharma P. Agrawal (Advisor)
83 p.

Recommended Citations

Citations

  • DUGGIRALA, R. (2004). EFFICIENT BRIDGE NEGOTIATION AND MANAGEMENT FOR BLUETOOTH-BASED PERSONAL AREA NETWORKS [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1076334358

    APA Style (7th edition)

  • DUGGIRALA, RANGANATH. EFFICIENT BRIDGE NEGOTIATION AND MANAGEMENT FOR BLUETOOTH-BASED PERSONAL AREA NETWORKS. 2004. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1076334358.

    MLA Style (8th edition)

  • DUGGIRALA, RANGANATH. "EFFICIENT BRIDGE NEGOTIATION AND MANAGEMENT FOR BLUETOOTH-BASED PERSONAL AREA NETWORKS." Master's thesis, University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1076334358

    Chicago Manual of Style (17th edition)