Using handheld devices such as cellular phones and smart phones for personal entertainment has become commonplace in today’s lifestyle. Virtually all of these devices are equipped with Bluetooth technology that can be used to distribute entertainment contents such as music and movie clips. Mobile users can download content from the opportunistically available infrastructure (e.g., Digital Billboards) as well as direct Peer- oPeer (P2P) collaboration which significantly increases content availability/coverage. P2P content distribution protocol design is heavily influenced by the characteristics of Bluetooth, which is the main departure from Internet-based content distribution. However, little has been done to understand the performance of overall Bluetooth operations, ranging from peer discovery to data downloading, in dynamic environments with mobility, interference, and different Bluetooth versions/chipsets. In this paper, we first perform extensive experiments to measure the performance of Bluetooth in dynamic environments. We find that Bluetooth-based content distribution faces several challenges such as time/energy consuming resource discovery and limited bandwidth even with the enhanced features of the latest Bluetooth version. We then propose trategies that can effectively improve the performance of resource discovery and downloading phases.Our simulation and experimental results document the improvements obtained with our proposed techniques.
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